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Molecular biology of the insulin-like growth factors

Relevance to nervous system function

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Conclusions

In the past ten years, molecular biology approaches have provided the structures of multiple components of the IGF system, IGF peptides, receptors, binding proteins, and the mRNAs and genes encoding them. Progress has been made toward understanding which components of the IGF system are expressed in the nervous system, their cellular localization, and their regulation. The molecular studies also provide the potential for availability of pure components of the IGF system for testing of biological effects and interactions. Emerging information from these approaches together with the applications of gene transfer approaches in cells in culture and transgenic animals suggest that the next few years will provide exponential increase in our information and understanding of the precise roles of the IGF system in nervous system function.

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References

  • Abe H., Molitch M., Van Wyk J., and Underwood L. (1983) Human growth hormone and somatomedin C suppress the spontaneous release of growth hormone in unanesthetized rats.Endocrinology 113, 1319–1324.

    PubMed  CAS  Google Scholar 

  • Adamo M., Raizada M. K., and LeRoith D. (1989a) Insulin and insulin-like growth factor receptors in the nervous system.Mol. Neurobiol. 3, 71–97.

    PubMed  CAS  Google Scholar 

  • Adamo M., Lowe W., LeRoith D., and Roberts C. (1989b) Insulin-like growth factor I messenger ribonucleic acids with alternative 5′-untranslated regions are differentially expressed during development of the rat.Endocrinology 124, 2737–2744.

    PubMed  CAS  Google Scholar 

  • Adamo M., Werner H., Farnsworth W., Roberts C. T. J., Raizada M., and LeRoith D. (1988) Dexamethasone reduces steady state insulin-like growth factor I messenger ribonucleic acid levels in rat neuronal and glial cells in primary culture.Endocrinology 123, 2565–2570.

    PubMed  CAS  Google Scholar 

  • Aizenman Y. and de Vellis J. (1987) Brain neurons develop in a serum and glial free environment: effects of transferrin, insulin, insulin-like growth factor-I and thyroid hormone on neuronal survival, growth and differentiation.Brain Res. 406 32–42.

    Article  PubMed  CAS  Google Scholar 

  • Andersson I. K., Edwall D., Norstedt G., Rozell B., Skottner A., and Hansson H. A. (1988) Differing expression of insulin-like growth factor I in the developing and in the adult rat cerebellum.Acta Physiol. Scand. 132, 167–73.

    PubMed  CAS  Google Scholar 

  • Araujo D. M., Lapchak P. A., Collier B., Chabot J. G., and Quirion R. (1989) Insulin-like growth factor-I (somatomedian-C) receptors in the rat brain: distribution and interaction with the hippocampal cholinergic system.Brain Res. 484, 130–138.

    Article  PubMed  CAS  Google Scholar 

  • Backstrom M., Hall K., and Sara V. (1984) Somatomedin levels in cerebrospinal fluid from adults with pituitary disorders.Acta Endocrinologica 107, 171–178.

    PubMed  CAS  Google Scholar 

  • Ballard J., Baxter R., Binoux M., Clemmons D., Drop S., Hall K., Hintz R., Rechler M., Rutanen E., and Schwander J. (1989) On the nomenclature of the IGF binding proteins.Acta Endocrinologica 121, 751–752.

    PubMed  CAS  Google Scholar 

  • Ballotti R., Nielson F. C., Pringle N., Kowalski A., Richardson W. D., Van Obberghen E., and Gammeltoft S. (1987) Insulin-like growth factor I in cultured rat astrocytes: expression of the gene, and receptor tyrosine kinase.EMBO J. 6, 3633–3639.

    PubMed  CAS  Google Scholar 

  • Baxter R. and Martin J. (1986) Radioimmunoassay of growl hormone-dependent insulin like growth factor binding protein in human plasma.J. Clin. Invest. 78, 1504–1512.

    Article  PubMed  CAS  Google Scholar 

  • Baxter R. C. and Martin J. L. (1989) Binding proteins for the insulin-like growth factors: structure, regulation and function.Progress in Growth Factor Research 1, 49–68.

    Article  PubMed  CAS  Google Scholar 

  • Beck F., Samani N. J., Byrne S., Mogan K., Gebhard R., and Brammer W. (1988) Histochemical localization of IGF-I and IGF-II mRNA in the rat between birth and adulthood.Development 104, 29–39.

    PubMed  CAS  Google Scholar 

  • Behringer R. R., Mathews L., Palmiter Richard D., and Brinster R. L. (1988) Dwarf mice produced by genetic ablation of growth hormone-expressing cells.Genes & Development 2, 453–461.

    Article  CAS  Google Scholar 

  • Behringer R., Lewin T., Quaife C., Palmiter R., Brinster R., and D’Ercole A. (1990) Expression of insulin-like growth factor I stimulates normal somatic growth in growth hormone-deficient transgenic mice.Endocrinology 127, 1033–1040.

    PubMed  CAS  Google Scholar 

  • Bell G., Merryweather J., Sanchez-Pascador R., Stempien M., Priestly L. S., and Rall L. (1984) Sequence of a cDNA clone encoding human preproinsulin-like growth factor II.Nature 310, 775–777.

    Article  PubMed  CAS  Google Scholar 

  • Bell G., Stempien M., Fong N., and Rall L. (1986) Seqences of liver cDNAs encoding two different mouse insulin-like growth factor I precursors.Nucleic Acids Research 14, 7873–7882.

    Article  PubMed  CAS  Google Scholar 

  • Berelowitz M., Szabo M., Frohman L., Firestone S., Chu L., and Hintz R. (1981) Somatomedin-C mediates growth hormone negative feedback by effects on both the hypothalmus and the pituitary.Science 212, 1279–1281.

    Article  PubMed  CAS  Google Scholar 

  • Binoux M., Hardouin S., Lassarre C., and Hossenlopp P. (1982) Evidence for production by the liver of two IGF binding proteins with similar molecular weights but different affinities for IGF-I and IGF-II. Their relations with serum and cerebrospinal fluid IGF binding proteins.J. Clin. Endoc. and Metab. 55, 600–602.

    CAS  Google Scholar 

  • Binoux M., Hossenlopp P., Lassarre C., and Hardouin N. (1981) Production of insulin-like growth factors and their carrier by rat pituitary gland and brain explants in culture.FEBS Lett. 124, 178–184.

    Article  PubMed  CAS  Google Scholar 

  • Blat C., Delbe J., Villaudy J., Chatelain G., Golde A., and Harel L. (1989) Inhibitory diffusible factor 45 bifunctional activity.J. Biol. Chem. 264, 12449–12454.

    PubMed  CAS  Google Scholar 

  • Bohannon N. J., Corp E. S., Wilcox B. J., Figlewicz D. P., Dorsa D. M., and Baskin D. G. (1988) Localization of binding sites for insulin-like growth factor-I (IGF-I) in the rat brain by quantitative autoradiography.Brain Res. 444, 205–213.

    Article  PubMed  CAS  Google Scholar 

  • Bohannon N. J., Figlewicz D. P., Corp E. S., Wilcox B. J., Porte D., and Baskin D. G. (1986) Identification of binding sites for an insulin-like growth factor (IGF-I) in the median eminence of the rat brain by quantitative autoradiography.Endocrinology 119, 943–945.

    PubMed  CAS  Google Scholar 

  • Bothwell M. (1982) Insulin and somatomedin MSA promotenerve growth factor-independent neurite formation by cultured chick dorsal root ganglionic sensory neurons.J. of Neurosci. Res. 8, 225–231.

    Article  CAS  Google Scholar 

  • Braulke T., Causin C., Waheed A., Junghans U., Hasilik A., Maly P., Humbel R., and von Figura K. (1988) Mannose 6-phosphate/insulin-like growth factor II receptor: distinct binding sites for mannose 6-phosphate and insulin-like growth factor II.Biochem. Biophys. Res. Comm. 150, 1287–1293.

    Article  PubMed  CAS  Google Scholar 

  • Brinkman A., Groffen C., Kortleve D., Geurts van Kessel A., and Drop S. (1988) Isolation and characterization of a cDNA encoding the low molecular weight insulin-like growth factor binding protein (IB-I).EMBO J. 7, 2417–2423.

    PubMed  CAS  Google Scholar 

  • Brown A., Chairotti L., Orlowski C., Mehlman T., Burgess W., Ackerman E., Bruni C., and Rechler M. (1989) Nucleotide sequence and expression of a cDNA clone encoding a fetal rat binding protein for insulin-like growth factors.J. Biol. Chem. 264, 5148–5154.

    PubMed  CAS  Google Scholar 

  • Bucci C., Mallucci P., Robers C., Frunzio R., and Bruini C. (1989) Nucleotide sequence of a genomic fragment of the rat IGF-I gene spanning an alternate 5 non coding exon.Nucleic Acids Research 17, 3596.

    Article  PubMed  CAS  Google Scholar 

  • Burgess S., Jacobs S., Cuatrecasas P., and Sahyoun N. (1987) Characterization of a neuronal substype of insulin-like growth factor I.J. Biol. Chem. 262, 1618–1622.

    PubMed  CAS  Google Scholar 

  • Cao Q., Kunguay S., Plisetskaya E., Steiner D., and Chan S. (1989) Nucleotide sequence and growth hormone-regulated expression of salmon insulin-like growth factor I mRNA.Mol. Endocrinol. 3, 2005–2010.

    PubMed  CAS  Google Scholar 

  • Carlsson-Skwirut C., Jornvail H., Holmgren A., Andersson C., Bergman T., Lundquist G., Sjogren B., and Sara V. R. (1986) Isolation and characterization of variant IGF-I as well as IGF-2 from adult human brain.FEBS Lett. 201, 46–50.

    Article  PubMed  CAS  Google Scholar 

  • Carlsson-Skwirut C., Lake M., Hartmans M., Hall K., and Sara V. R. (1989) A comparison of the biological activity of the recombinant intact ani truncated insulin-like growth factor I (IGF-I).Biochimica et Biophysica Acta 1011, 192–197.

    PubMed  CAS  Google Scholar 

  • Carson M., Behringer R., Mathews L., Palmiter R., Brinster R., and McMorris F. (1988) Myelin content increased in transgenic mice producing elevated levels of insulin-like growth factor-I (IGF-I).Society for Neuroscience Abstracts 14, 119.

    Google Scholar 

  • Carson M., Behringer R., Mathews L., Palmiter R., Brinster R., and McMorris F. (1989) Hypomyelination caused by growth hormone deficiency is reversed by insulin-like growth factor I in transgenic mice.Trans. Am. Soc. Neurochem. 20, 286.

    Google Scholar 

  • Casella S., Smith E., Van Wyk J., Joseph D., Hynes M., Hoyt E., and Lund P. (1987) Isolation of rat testis cDNA encoding an insulin-like growth factor I precursor.DNA 6, 325–330.

    PubMed  CAS  Google Scholar 

  • Ceda G., Davis R., Rosenfeld R., and Hoffman A. (1987) The growth hormone (GH)-releasing hormone (GHRH)-GH somatomedin axis: Evidence for rapid inhibition of GHRH-elicited GH release by insulin-like growth factors I and II.Endocrinology 120, 1658–1662.

    PubMed  CAS  Google Scholar 

  • Chiariotti L., Brown A., Frunzio R., Clemmons D., Rechler M., and Bruni C. (1988) Structure of the rat insulin-like growth factor II transcriptional unit: heterogeneous transcripts are generated from two promoters by use of multiple polyadenylations sites and differential ribonucleic acid splicing.Mol. Endocrinol. 2, 1115–1126.

    PubMed  CAS  Google Scholar 

  • Clemmons D. R., and Shaw D. S. (1986) Purification and biologic properties of fibroblast somatomedin.J. Biol. Chem. 261, 10293–10298.

    PubMed  CAS  Google Scholar 

  • Clemmons D. (1989) Structural and functional analysis of insulin-like growth factors.British Medical Bulletin 45, 465–480.

    PubMed  CAS  Google Scholar 

  • Cohen K., and Nissley S. (1976) The serum half-life of somatomedin activity: evidence for growth hormone dependence.Acta Endocrinologica 83, 243–258.

    PubMed  CAS  Google Scholar 

  • Collins F., and Dawson A. (1983) An effect of nerve growth factor on parasympathetic neurite out-growth.Proc. Natl. Acad. Sci. USA 80, 2091–2094.

    Article  PubMed  CAS  Google Scholar 

  • Czech M. P. (1989) Signal transmission by the insulinlike growth factors.Cell 59, 235–238.

    Article  PubMed  CAS  Google Scholar 

  • Daughaday W. H., Hall K., Raben M. S., Salmon W. D. J., Van den Brande J. L., and Van Wyk J. J. (1972) Somatomedin: a proposed designation for the “sulfation factor”.Nature 235, 107.

    Article  PubMed  CAS  Google Scholar 

  • Daughaday W. H., Hall K., Raben M. S., Salmon W. D. J., Van den Brande J. L., and Van Wyk J. J. (1989) On the nomenclature of the soma tomedins, and insulinlike growth factors.J. Clin. Endoc. Metab. 5, 15.

    Google Scholar 

  • Daughaday W. H., and Rotwein P. (1989) Insulin-like growth factors I and II. Peptide, messenger ribonucelic acid and gene structures, serum, and tissue concentrations.Endocrine Reviews 10, 68–91.

    PubMed  CAS  Google Scholar 

  • DeChiara T. M., Argiris Efstratiadis, and Robertson E. J. (1990) A growth-deficiency phenotype in heterozygous mice carrying an insulin-like growth factor II gene disrupted by targeting.Nature 345, 78–80.

    Article  PubMed  CAS  Google Scholar 

  • DeMellow J., and Baxter R. (1988) Growth hormone-dependent insulin-like growth factor (IGF) binding protein both inhibits and potentiates IGF-I stimulated DNA synthesis in human skin fibroblast.Biochem. Biophys. Res. Comm. 156, 199–204.

    Article  CAS  Google Scholar 

  • de Pagter-Holthuizen P., Jansen M., van der Kammen R. A., van Schaik F. M. A., and van der Sussenbach J. S. (1988) Differential expression of the human insulin-like growth factor II gene. Characterization of the IGF-II mRNAs and an mRNA encoding a putative IGF-II associated protein.Biochim. Biophys. Acta 950, 282–295.

    PubMed  Google Scholar 

  • de Pagter-Holthuizen P., Jansen M., van Schaik F., van der Kammen R., Oosterwijk C., Van de Brande J., and Sussenbach J. (1987) The human insulin-like growth factor II gene contains two developmental-specific promotors.FEBS Lett. 214, 259–264.

    Article  PubMed  Google Scholar 

  • D’Ercole A., Stiles A., and Underwood L. (1984) Tissue concentrations of somatomedin C: Further evidence for multiple sites of synthesis, and paracrine or outocrine mechanisms of action.Proc. Natl. Acad. Sci. USA 81, 935–939.

    Article  PubMed  CAS  Google Scholar 

  • Devenport L., and Devenport J. (1985) Adrenocortical hormones and brain growth: reversibility and differential sensitivity during development.Expt. Neurol. 90, 44–52.

    Article  CAS  Google Scholar 

  • DiCicco-Bloom E., and Black I. B. (1988) Insulin, growth factors regulate the mitotic cycle in cultured rat sympathetic neuroblasts.Proc. Natl. Acad. Sci. USA 85, 4066–4070.

    Article  PubMed  CAS  Google Scholar 

  • Drop S., Kortieve D., Guyda H., and Posner B. (1984) Immunoassay of a somatomedin-binding protein from human amniotic fluid: levels In fetal, neonatal, and adult sera.J. Clin. Endoc. Metab. 59, 908–915.

    Article  CAS  Google Scholar 

  • Duffy K., Pardridge W., and Rosenfeld R. (1988) Human blood brain barrier insulin-like growth factor receptor.Metabolism 37, 136–140.

    Article  PubMed  CAS  Google Scholar 

  • Dulak N., and Temin H. M. (1973) A partially purified polypeptide fraction from rat liver cell conditioned medium with multiplication-stimulation activity for embryo fibroblasts.J. Cell. Physiol. 81, 153–160.

    Article  PubMed  CAS  Google Scholar 

  • Dull T. J., Gray A., Hayflick J. S., and Ullrich A. (1984) Insulin-like growth factor II precursor gene organization in relation to insulin gene family.Nature 310, 777–781.

    Article  PubMed  CAS  Google Scholar 

  • Elgin R., Busby W., and Clemmons D. (1987) An insulin-like growth factor (IGF) binding protein enhances the biologic response to IGF-I.Proc. Natl. Acad. Sci. USA 84, 3254–3258.

    Article  PubMed  CAS  Google Scholar 

  • Elmer C., and Schalch D. (1987) Nutritionally-induced changes in hepatic insulin-like growth factorI (IGF-I) gene expression in rats.Endocrinology 120, 832–834.

    Google Scholar 

  • Enberg G., and Hall K. (1984) Immunoreactive IGF-II in serum of healthy subjects and patients with growth hormone disturbances and uremia.Acta Endocrinol. 107, 164–170.

    PubMed  CAS  Google Scholar 

  • Enberg G., Tham A., Sara V. R. (1985) The influence purified somatomedins and insulin on foetal rat brain DNA synthesis in vitro.Acta Physiol. Scand. 125, 305–308.

    PubMed  CAS  Google Scholar 

  • Fagin J., Fernandez-Mejia C., and Melmed S. (1989), Pituitary insulin-like growth factor-I gene expression: regulation by triiodothyronine and growth hormone.Endocrinology 125, 2385–2391.

    PubMed  CAS  Google Scholar 

  • Fernyhough P., Mill J., Roberts J., and Ishii D. (1989) Stabilization of tubulin mRNA by insulin and insulin-like growth factor I during neurite formation.Mol. Brain Res. 6, 109–120.

    Article  PubMed  CAS  Google Scholar 

  • Francis G., McNeil K., Wallace J., Ballard F., and Owens P. (1989) Sheep insulin-like growth factors I and II: sequences, activities and assays.Endocrinology 124, 1243–1173.

    Google Scholar 

  • Frank H. J., Pardridge W. M., Morris W. L., Rosenfeld R. G., and Choi T. B. (1986) Binding and internalization of insulin and insulin-like growth factors by isolated brain microvessels.Diabetes 35, 654–661.

    Article  PubMed  CAS  Google Scholar 

  • Froesch E., Burgi H., Ramseier E., Bally P., and Labhart A. (1963) Antibody-suppressible and non-supressible insulin-like activities in human serum and their physiologic significance.J. Clin. Invest. 42, 1816–1834.

    Article  PubMed  CAS  Google Scholar 

  • Frunzio R., Chiariotti L., Brown A. L., Graham D. E., Rechler M. M., and Bruni C. B. (1986) Structure and expression of the rat insulin-like growth factor II (rIGF-II) gene.J. Biol. Chem. 261, 17138–17149.

    PubMed  CAS  Google Scholar 

  • Fryklund L., Skottner A., Sievertsson H., and Hall K. (1976) Somatomedins A and B: isolation, chemistry and in vivo effects, inGrowth Hormone and Related Peptides, Excerpta Medica, Amsterdam, pp. 156–168.

    Google Scholar 

  • Gammeltoft S., Haselbacher G., Humbel R., Fehlmann M., and Obberghen E. (1985) Two types of receptors for insulin-like growth factorsin mammalian brain.EMBO J. 4, 3407–3412.

    PubMed  CAS  Google Scholar 

  • Goldstein S., ASertich G. J., Levan K. R., and Phillips L. S. (1988) Nutrition and somatomedin. XIX. Molecular regulation of insulin-like growth factor-I in streptozotocin-diabetic rats.Mol. Endocrinol. 2, 1093–1099.

    PubMed  CAS  Google Scholar 

  • Goodyer C. G., De Stephano L., Lai W. H., Guyda H. J., and Posner B. I. (1984) Characterization of insulin-like growth factor receptors in rat anterior pituitary, hypothalamus, and brain.Endocrinology 114, 1187–1195.

    PubMed  CAS  Google Scholar 

  • Graham D., Rechler M., Brown A., Frunzio R., Romanus J. Bruni C., Whitfield H., Nissley S., Seelig S., and Berry S. (1986) Coordinate developmental regulation of high and low molecular weight mRNAs for rat insulin-like growth factor II.Proc. Natl. Acad. Sci. USA 83, 5419.

    Article  Google Scholar 

  • Gray A., Tam T. J., Haflick J., Pintar J., Cavenee W. K., Koufos A., and Ullrich A. (1987) Tissue-specific and developmentally regulated transcription of the insulin-like growth factor 2 gene.DNA 6, 283–295.

    PubMed  CAS  Google Scholar 

  • Hall K. (1972) Human somatomedin: determination, occurrence, biological activity and purification.Acta Endocrinol. 163 (suppl.), 1–45.

    Google Scholar 

  • Hammer R. E., Brinster R. L., Rosenfeld M. G., Evans R. E., and Mayo K. E. (1985) Expression of human growth hormone-releasing factor in transgenic mice results in increased somatic growth.Nature 315, 413–416.

    Article  PubMed  CAS  Google Scholar 

  • Han V. K., Lauder J. M., and D’Ercole A. J. (1987) Characterization of somatomedin/insulin-like growth factor receptors and correlation with biologic action in cultured neonatal rat astroglial cells.J. Neuroscience 7, 501–511.

    CAS  Google Scholar 

  • Han V. K., Lauder J. M., and D’Ercole A. J. (1988a) Rat astroglial somatomedin/insulin-like growth factor binding proteins: characterization and evidence of biologic function.J. Neuroscience 8, 3135–3143.

    CAS  Google Scholar 

  • Han V. K. M., Lund P. K., Lee D. C., and D’Ercole A. J. (1988b) Expression of somatomedin/insulin-like growth factor messenger ribonucleic acids in the human fetus: Identification, characterization, and tissue distribution.J. Clin. Endoc. Metab. 66, 422–429.

    CAS  Google Scholar 

  • Hansson H. A., Dahlin L. B., Danielsen N., Fryklund L., Nachemson A. K., Polleryd P., Rozell B., Skottner A., Stemme S., and Lundborg G. (1986) Evidence indicating trophic importance of IGF-I in regenerating peripheral nerves.Acta Physiol. Scand. 126, 609–614.

    PubMed  CAS  Google Scholar 

  • Hansson H. A., Holmgren A., Norstedt G., and Rozell B. (1989 Mar) Changes in the distribution of insulin-like growth factor I, thioredoxin, thioredoxin reductase and ribonucleotide reductase during the development of the retina.Exp. Eye Res. 48, 411–420.

    Article  PubMed  CAS  Google Scholar 

  • Hansson H. A., Lauritzen C., Lossing C., and Petruson K. (1988) Somatomedin C as tentative pathogenic factor in neurofibromatosis.Scand. J. Plast. Reconstr. Surg. Hand Surg. 22, 7–13.

    Article  PubMed  CAS  Google Scholar 

  • Hansson H. A., Rozell B., and Skottner A. (1987) Rapid axoplasmic transport of insulin-like growth factor I in the sciatic nerve of adult rats.Cell Tissue Res. 247, 241–247.

    Article  PubMed  CAS  Google Scholar 

  • Haselbacher G., and Humbel R. (1982) Evidence for two species of insulin-like growth factor II (IGF-II and big IGF-II) in human spinal fluid.Endocrinology 110, 1822–1824.

    PubMed  CAS  Google Scholar 

  • Haselbacher G., Schwab M., Pasi A., and Humbel R. (1985) Insulin-like growth factor II (IGFII) in human brain: Regional distribution of IGF-II an of higher molecular mass forms.Proc. Natl. Acad. Sci. USA 82, 2153–2158.

    Article  PubMed  CAS  Google Scholar 

  • Heidenreich K. A., Freidenberg G. R., Figlewicz D. P., and Gilmore P. R. (1986) Evidence for a subtype of insulin-like growth factor I receptor in brain.Regul. Pept. 15, 301–310.

    Article  PubMed  CAS  Google Scholar 

  • Hepler J. E., Van Wyk J. J., and Lund P. K. (1990) Different half-lives of insulin-like growth factor I mRNAs that differ in length of 3′ untranslated sequence.Endocrinology 127, 1550–1552.

    Article  PubMed  CAS  Google Scholar 

  • Holthuizen P., van der Lee F., Ikejiri K., Yamamoto M., and Sussenbach J. (in press) Identification and initial characterization of a fourth leader exon and promoter of the human IGF-II gene.Biochimica Biophysica Acta.

  • Honegger A., and Humbel R. (1986) Insulin-like growth factors I and II in fetal and adult bovine serum.J. Biol. Chem. 261, 569–575.

    PubMed  CAS  Google Scholar 

  • Hossenlopp P., Seurin D., Segovia-Quinson B., and Binoux M. (1986) Identification of an insulin-like growth factor-binding protein in human cerebrospinal fluid with a selective affinity for IGF-II.FEBS Lett. 208, 439–444.

    Article  PubMed  CAS  Google Scholar 

  • Hoyt E., Van Wyk J., and Lund P. (1988) Tissue and development specific regulation of a complex family of insulin-like growth factor I messenger ribonucleic acids.Mol. Endocrinol. 2, 1077–1086.

    PubMed  CAS  Google Scholar 

  • Hoyt E. C., Hepler J. E., Van Wyk J. J., and Lund P. K. Structural characterization of exon 5 of the rat IGF-I gene encoding an unusually long 3′ untranslated region. Manuscript in preparation.

  • Humbel R. E. (1990) Insulin-like growth factors I and II.Eur. Biochem. 190, 445–462.

    Article  CAS  Google Scholar 

  • Hynes M. A., Brooks P. J., Van Wyk J. J., and Lund P. K. (1988) Insulin-like growth factor II messenger ribonucleic acids are synthesized in the choroid plexus of the rat brain.Mol. Endocrinol. 2, 47–54.

    PubMed  CAS  Google Scholar 

  • Hynes M. A., Van W. J., Brooks P. J., D’Ercole A. J., Jansen M., and Lund P. K. (1987) Growth hormone dependence of somatomedin-C/insulin-like growth factor-I and insulin-like growth factor-II messenger ribonucleic acids.Mol. Endocrinol. 1, 233–242.

    PubMed  CAS  Google Scholar 

  • Ichimiya Y., Emson P. C., Northrop A. J., and Gilmour R. S. (1988) Insulin-like growth factor II in the rat choroid plexus.Brain Res. 464, 167–170.

    PubMed  CAS  Google Scholar 

  • Ishii D. N. (1989) Relationship of insulin-like growth factor II gene expression in muscle to synaptogenesis.Proc. Natl. Acad. Sci. USA 86, 2898–2902.

    Article  PubMed  CAS  Google Scholar 

  • Ishii D. N., Recio-Pinto E., Spinelli W., Mill J., and Sonnenfeld K. H. (1985) Neurite formation modulation by nerve growth factor, insulin, and tumor promoter receptors.Intern. J. Neuroscience 26, 109–127.

    Article  CAS  Google Scholar 

  • Jansen M., Van Schaik F., Ricker A., Bullock B., Woods D., Gabby K., Nussbaum A., Sussenbach J., and Van Den Brande J. (1983) Sequence of cDNA encoding human insulin-like growth factor I precursor.Nature 306, 609–611.

    Article  PubMed  CAS  Google Scholar 

  • Jansen M., Van Schaik F., Van Tol H., Van de Brande J., and Sussenbach J. (1985) Nucleotide sequence of cDNAs encoding precursors of human insulin-like growth factor II (IGF-II) and an IGF-II variant.FEBS Lett. 179, 243–246.

    Article  PubMed  CAS  Google Scholar 

  • Kajimoto Y., and Rotwein P. (1989) Structure and expression of a chicken insulin-like growth factor I precursor.Mol. Endocrinol. 3, 1907–1913.

    PubMed  CAS  Google Scholar 

  • Kajimoto Y., and Rotwein P. (1990) Evolution of Insulin-like Growth Factor I (IGF-I) Precursor fromXenopus laevis.Mol. Endocrinol. 4, 217–226.

    PubMed  CAS  Google Scholar 

  • Kanje M., Skottner A., Sjoberg J., and Lundborg G. (1989) Insulin-like growth factor I (IGF-I) stimulates regeneration of the rat sciatic nerve.Brain Res. 486, 396–398.

    Article  PubMed  CAS  Google Scholar 

  • Kato H., Miura Y., Okoshi A., Umezawa T., Takahashi S., and Noguchi T. (1989) Dietary and hormonal factors affecting the mRNA level of IGF-I in rat liver in vivo and in primary cultures of rat hepatocytes, inMolecular and Cellular Biology of Insulin-Like Growth Factors and Their Receptors, (LeRoith D. and Raizada M. K., eds.) Plenum Press, New York, pp. 125–128.

    Google Scholar 

  • Kiess W., Blichenstaff G. D., Sklar M. M., Thomas C. L., Nissley S. P., and Sahagian G. G. (1988) Biochemical evidence that the type II insulin-like growth factor receptor is identical to the cation-independent mannose 6-phosphate receptor.J. Biol. Chem. 263, 9339–9344.

    PubMed  CAS  Google Scholar 

  • King R., Smith R., Meller D., Dahlenburg G., and Lineham J. (1988) Effect of growth hormone on growth and myelination in the neonatal hypothyroid rat.J. Endocr. 119, 117–125.

    PubMed  CAS  Google Scholar 

  • Klapper D. G., Svoboda M. E., and VanWyk J. (1983) Sequence analysis of somatomedin-C: confirmation of identity with insulin-like growth factor I.Endocrinology 112, 2215–2217.

    PubMed  CAS  Google Scholar 

  • Lauterio T., Aravich P. F., and Rotwein P. (1990) Divergent effects of insulin on insulin-like growth factor-II gene expression in the rat hypothalmus.Endocrinology 126, 392–398.

    PubMed  CAS  Google Scholar 

  • Lauterio T. J., Marson L., Daughaday W. H., and Baile C. A. (1987) Evidence for the role of insulin-like growth factor II (IGF-II) in the control of food intake.Physiol. Behav. 40, 755–758.

    Article  PubMed  CAS  Google Scholar 

  • Lenoir D. and Honegger P. (1983) Insulin-like growth factor I (IGF I) stimulates DNA synthesis in fetal rat brain cell cultures.Brain Res. 283, 205–213.

    PubMed  CAS  Google Scholar 

  • Lesniak M. A., Hill J. M., Kiess W., Rojeski M., Pert C. B., and Roth J. (1988) Receptors for insulin-like growth factors I and II: Autoradiographic localization in rat brain and comparison to receptors for insulin.Endocrinology 123, 2089–2099.

    PubMed  CAS  Google Scholar 

  • Levinovik A. and Norstedt G. (1989) Developmental and steroid hormonal regulation of insulin-like growth factor II expression.Mol. Endocrinol. 3, 797–804.

    Google Scholar 

  • Lobel P., Dahms N. M., Breitmeyer J., Chirgwin J. M., and Kornfeld S. (1987) Cloning of the bovine 215-kDa cation-independent mannose 6-phosphate receptor.Proc. Natl. Acad. Sci. USA 84, 2233–2237.

    Article  PubMed  CAS  Google Scholar 

  • Loeb J. (1976) Corticosteroids and growth.N. Engl. J. Med. 295, 547–552.

    PubMed  CAS  Google Scholar 

  • Lowe W., Adamo M., Werner H., Roberts C., and LeRoith D. (1989) Regulation by fasting of rat insulin-like growth factor I and its receptor.J. Clin. Invest. 84, 619–626.

    Article  PubMed  CAS  Google Scholar 

  • Lowe W., Lasky S., LeRoith D., and Roberts C. (1988) Distribution and regulation of rat insulin-like growth factor I messenger ribonucleic acids encoding alternative carboxyterminal E-peptides: Evidence for differential processing and regulation in liver.Mol. Endocrinol. 2, 528–535.

    PubMed  CAS  Google Scholar 

  • Lowe W., Roberts C., Lasky S., and LeRoith D. (1987) Differential expression of alternative 5′ untranslated regions in mRNAs encoding rat insulin-like growth factor I.Proc. Natl. Acad. Sci. USA 84, 8946–8950.

    Article  PubMed  CAS  Google Scholar 

  • Lund P., Hoyt E., and Van Wyk J. (1989) The size heterogeneity of rat insulin-like growth factor-I mRNAs is due primarily to differences in the length of 3′-untranslated sequence.Mol. Endocrinol. 3, 2054–2061.

    PubMed  CAS  Google Scholar 

  • Lund P. K., Moats-Staats B. M., Hynes M. A., Simmons J. G., Jansen M., D’Ercole A. J., and Van W. J. J. (1986) Somatomedin-C/insulin-like growth factor-I and insulin-like growth factor-II mRNAs in rat fetal and adult tissues.J. Biol. Chem. 261, 14539–14544.

    PubMed  CAS  Google Scholar 

  • Maes M., Underwood L. E., and Ketelslegers J. M. (1986) Low serum somatomedin-C in insulin-dependent diabetes: evidence for a postreceptor mechanism.Endocrinology 118, 377–382.

    PubMed  CAS  Google Scholar 

  • Margot J., Binkert C., Mary J., Landwehr J., Heinrich G., and Schwander J. (1989) A low molecular weight insulin-like growth factor binding protein from rat: cDNA cloning and tissue distribution of its messenger RNA.Mol. Endocrinol. 3, 1053–1060.

    PubMed  CAS  Google Scholar 

  • Marquardt H., Todaro G., Henderson L., and Oroszlan S. (1981) Purification and primary structure of a polypeptide with multiplication-stimulation activity from rat liver cell cultures.J. Biol. Chem. 256, 6859–6865.

    PubMed  CAS  Google Scholar 

  • Martin D., Renold A., and Dagenais Y. (1958) An assay for insulin-like activity using rat adipose tissue.Lancet 275, 76–77.

    Article  Google Scholar 

  • Mathews L. S., Hammer R. E., Behringer R. R., D’Ercole A. J., Bell G. I., Brinster R. L., and Palmiter R. D. (1988) Growth enhancement of transgenic mice expressing human insulin-like growth factor I.Endocrinology 123, 2827–2833.

    PubMed  CAS  Google Scholar 

  • Mathews L. S., Norstedt G., and Palmiter R. D. (1986) Regulation of insulin-like growth factor I gene expression by growth hormone.Proc. Natl. Acad. Sci. USA 83, 9343–9347.

    Article  PubMed  CAS  Google Scholar 

  • Matsuguchi T., Takahashi K., Ueno T., Endo H., and Yamamoto M. (1989) A novel transcription unit within the exon sequence of the rat insulin-like growth factor II gene.Biochemistry International 18, 71–79.

    PubMed  CAS  Google Scholar 

  • McElduff A., Poronnik P., and Baxter R. C. (1987) The Insulin-like growth factor-II (IGF II) receptor from rat brain is of lower apparent molecular weight than the IGF II receptor from rat liver.Endocrinology 121, 1306–1311.

    PubMed  CAS  Google Scholar 

  • McElduff A., Poronnik P., Baxter R. C., and Williams P. (1988) A comparison of the insulin and insulin-like growth factor I receptors from rat brain and liver.Endocrinology 122, 1933–1939.

    PubMed  CAS  Google Scholar 

  • McMorris F. A., and Dubois-Dalcq M. (1988) Insulin-like growth factor I promotes cell proliferation and oligodendroglial commitment in rat glial progenitor cells developing in vitro.J. Neurosci. Res. 21, 199–209.

    Article  PubMed  CAS  Google Scholar 

  • McMorris F. A., Smith T. M., DeSalvo S., and Furlanetto R. W. (1986) Insulin-like growth factor I/somatomedin C: a potent inducer of oligodendrocyte development.Proc. Natl. Acad. Sci. USA 83, 822–826.

    Article  PubMed  CAS  Google Scholar 

  • Mill J. F., Chao M. V., and Ishii D. N. (1985) Insulin, insulin-like growth factor II, and nerve growth factor effects on tubulin mRNA levels and neurite formation.Proc. Natl. Acad. Sci. USA 82, 7126–7130.

    Article  PubMed  CAS  Google Scholar 

  • Moats-Staats B., Brady J., Underwood L., and D’Ercole A. (1989) Dietary protein restriction in artificially reared neonatal rats causes a reduction of insulin-like growth factor-I gene expression.Endocrinology 125, 2368–2374.

    PubMed  CAS  Google Scholar 

  • Morgan D., Edman J., Standring D., Fried V., Smith M., Roth R., and Rutter W. (1987) Insulin-like growth factor II receptor as a multifunctional binding protein.Nature 329, 301–307.

    Article  PubMed  CAS  Google Scholar 

  • Moses A., Nissley S., Short P., and Rechler M. (1980) Immunological cross-reactivity of multiplication-stimulating activity polypeptides.Eur. J. Biochem. 103, 401–408.

    Article  PubMed  CAS  Google Scholar 

  • Murphy L. (1988) Impaired estrogen-induced uterine insulin-like growth factor-I gene expression in the streptozotocin diabetic rat.Diabetologia 31, 842–847.

    Article  PubMed  CAS  Google Scholar 

  • Murphy L., and Friesen H. (1988) Different effects of estrogen and growth hormone on uterine and hepatic insulin-like growth factor I gene expression in the ovariectomized hypophysectomized rat.Endocrinology 122, 325–332.

    PubMed  CAS  Google Scholar 

  • Murphy L., and Luo J. (1989) Dexamethasone inhibits growth hormone induction of insulin-like growth factor-I (IGF-I) messenger ribonucleic acid (mRNA) in hypophysectomized rats and reduces IGF-I mRNA abundance in the intact rat.Endocrinology 125, 165–171.

    PubMed  Google Scholar 

  • Murphy L. J., Bell G. I., Duckworth M. L., and Friesen H. G. (1987a) Identification, characterization, and regulation of a rat complementary deoxyribonucleic acid which encodes insulin-like growth factor-I.Endocrinology 121, 684–69.

    PubMed  CAS  Google Scholar 

  • Murphy L. J., Murphy L. C., and Friesen H. G. (1987b) Estrogen induces Insulin-like growth factor-I expression in the rat uterus.Mol. Endocrinol. 1, 445–450.

    PubMed  CAS  Google Scholar 

  • Nissley S., Adams S., Acquaaviva A., Yang Y., Bruni C., Angust G., White R., Foley T. J., Moses A., Cohen A., and Rechler M. (1983) Multiplication stimulating activity for cells in culture, inInsulin-Like Growth Factors/Somatomedin: Basic Chemistry, Biology, Clinical Importance, Walter de Gruyter, Berlin, New York, pp. 31–48.

    Google Scholar 

  • Noguchi T., Kurata L. M., and Sugisaki T. (1987) Presence of a somatomedin-C-immunoreactive substance in the central nervous system: immunohistochemical mapping studies.Neuroendocrinology 46, 277–282.

    Article  PubMed  CAS  Google Scholar 

  • Norstedt G., Levinovitz A., Moller C., Eriksson L., and Andersson G. (1988) Expression of insulin-like growth factor I (IGF-I) and IGF-II mRNA during hepatic development, proliferation and carcinogenesis in the rat.Carcinogenesis 9, 209–213.

    Article  PubMed  CAS  Google Scholar 

  • Ocrant I., Pham H., Oh Y., and Rosenfeld R. (1989) Characterization of insulin-like growth factor binding proteins of cultured rat astroglial and neuronal cells.Biochem. Biophys. Res. Comm. 159, 1316–1322.

    Article  PubMed  CAS  Google Scholar 

  • Ocrant I., Valentino K. L., Eng L. F., Hintz R. L., Wilson D. M., and Rosenfeld R. G. (1988) Structural and immunohistochemical characterization of insulin-like growth factor I and 11 receptors in the murine central nervous system.Endocrinology 123, 1023–1034.

    PubMed  CAS  Google Scholar 

  • Orlowski C. C., Chernausek S. D., and Akeson R. (1989) Actions of insulin-like growth factor-I on the B104 neuronal cell line: effects on cell replication, receptor characteristics, and influence of secreted binding protein on ligand binding.J. Cell. Physiol. 139, 469–476.

    Article  PubMed  CAS  Google Scholar 

  • Palmiter R. D., Brinster R. L., Hammer R. E., Trumbauer Myrna E., Rosenfeld M. G., Birnberg N. C., and Evans R. M. (1982) Dramatic growth of mice that develop with metallothionein-growth hormone fusion genes.Nature 300, 611–615.

    Article  PubMed  CAS  Google Scholar 

  • Phillips L. S. (1986) Nutrition, somatomedins, and the brain.Metabolism 35, 78–87.

    Article  PubMed  CAS  Google Scholar 

  • Pierson R., and Temin H. (1972) The partial purification from calf serum of a fraction with multiplication-stimulating activity for chicken fibroblasts in cell culture and with non-suppressible insulin-like activity.J. Cell. Physiol. 79, 319–330.

    Article  PubMed  CAS  Google Scholar 

  • Powell D., Lee P., Chang D., Liu F., and Hintz R. (1987) Antiserum developed for the E peptide region of insulin-like growth factor IA prohormone recognizes a serum protein by both immunoblot and radioimmunoassay.J. Clin. Endoc. Metab. 65, 868–875.

    CAS  Google Scholar 

  • Prats H., Kaghad M., Prats A., Klagsbrun M., Lelias J., Liauzun P., Chalon P., Tauber J., Amalric F., Smith J., and Caput D. (1989) High molecular mass forms of basic fibroblast growth factor are initiated by alternative CUG codon-.Proc. Natl. Acad. Sci. USA 86, 1836–1840.

    Article  PubMed  CAS  Google Scholar 

  • Recio-Pinto E. and Ishii D. N. (1984) Effects of insulin, insulin-like growth factor-II and nerve growth factor on neurite outgrowth in cultured human neuroblastoma cells.Brain Res. 302, 323–334.

    Article  PubMed  CAS  Google Scholar 

  • Recio-Pinto E. and Ishii D. N. (1988) Insulin and insulin-like growth factor receptors regulating neurite formation in cultured human neuroblastoma cells.J. Neurosci. Res. 19, 312–320.

    Article  PubMed  CAS  Google Scholar 

  • Recio-Pinto E., Lang F. F., and Ishii D. N. (1984) Insulin and insulin-like growth factor II permit nerve growth factor binding and the neurite formation response in cultured human neuroblastoma cells.Proc. Natl. Acad. Sci. USA 81, 2562–2566.

    Article  PubMed  CAS  Google Scholar 

  • Recio-Pinto E., Rechler M. M., and Ishii D. N. (1986) Effects of insulin, insulin-like growth factor-II, and nerve growth factor on neurite formation and survival in cultured sympathetic and sensory neurons.J. Neuroscience 6, 1211–9.

    CAS  Google Scholar 

  • Renold A. E., Martin D. B., Dagenais Y., Steinke J., Nickerson R., and Sheps M. (1960) Measurement of small quantities of insulin-like activity using rat adipose tissue I. A proposed procedure.J. Clin. Invest. 39, 1487–1498.

    Article  PubMed  CAS  Google Scholar 

  • Rinderknecht E. and Humbel R. (1978a) The amino acid sequence of human insulin-like growth factor I and its structural homolgy, with proinsulin.J. Biol. Chem. 253, 2769–2776.

    PubMed  CAS  Google Scholar 

  • Rinderknecht E. and Humbel R. (1978b) Prima structure of human insulin-like growth factor II.FEBS Lett. 89, 283–286.

    Article  PubMed  CAS  Google Scholar 

  • Roberts C., Brown A., Graham D., Seelig S., Berry S., Gabbay K., and Rechler M. (1986) Growth hormone regulates the abundance of insulin-like growth factor I RNA in adult rat liverJ. Biol. Chem. 261, 10025–10028.

    PubMed  CAS  Google Scholar 

  • Roberts C., Lasky S., Lowe W., Seaman W., and LeRoith D. (1987a) Molecular cloning of rat insulin-like growth factor I complementary deoxyribonucleic acids: Differential messenger ribonucleic acid processing and regulation by growth hormone in extrahepatic tissues.Mol. Endocrinol. 1, 243–248.

    PubMed  CAS  Google Scholar 

  • Roberts C., Lasky S., Lowe W., and LeRoith D. (1987b) Rat IGF-IcDNAs contain multiple 5′-untranslated regions.Biochem. Biophys. Res. Comm. 14, 1154–1159.

    Article  Google Scholar 

  • Romanus J., Tseng L., Yang Y., and Rechler M. (1989) The 34 kilodalton insulin-like growth factor binding proteins in human cerebrospinal fluid and the A673 rhabdomyosarcoma cell line are human homologues of the rat BRL-3A binding protein.163, 875–881.

    CAS  Google Scholar 

  • Rosenfeld R., Pham H., Conover C., Hintz R., and Baxter R. (1989) Structural and immunological comparison of insulin-like growth factor binding proteins of cerebrospinal and amniotic fluids.J. Clin. Endoc. Metab. 68, 638–646.

    CAS  Google Scholar 

  • Rosenfeld R. G., Pham H., Keller B. T., Borchardt, R. T., and Pardridge W. M. (1987) Demonstration and structural comparison of receptors for insulin-like growth factor-I and-II (IGF-I and-II) in brain and blood-brain barrier.Biochem. Biophys. Res. Comm. 149, 159–166.

    Article  PubMed  CAS  Google Scholar 

  • Rotwein P. (1986) Two insulin-like growth factor I messenger RNAs are expressed in human liver.Proc. Natl. Acad. Sci. USA 83, 77–81.

    Article  PubMed  CAS  Google Scholar 

  • Rotwein P., Burgess S. K., Milbrandt J. D., and Krause J. E. (1988) Differential expression of insulin-like growth factor genes in rat central nervous system.Proc. Natl. Acad. Sci. USA 85, 265–269.

    Article  PubMed  CAS  Google Scholar 

  • Rotwein P., Folz R. J., and Gordon J. I. (1987) Biosynthesis of human insulin-like growth factor I (IGF-I).Biol. Chem. 262, 11807–11812.

    CAS  Google Scholar 

  • Rotwein P., Pollock K., Didier D., and Krivi G. (1986) Organization and Sequence of the Human Insulin-like Growth Factor I Gene.J. Biol. Chem. 261, 4828–4832.

    PubMed  CAS  Google Scholar 

  • Salmon W. D., and Daughaday W. (1957) A hormonally controlled serum factor which stimulates sulfate incorporation by cartilage in vitro.J. Lab. Clin. Med. 49, 825–836.

    PubMed  CAS  Google Scholar 

  • Saneto R. P., Low K. G., Melner M. H., and deVellis J. (1988) Insulin/insulin-like growth factor I and other epigenetic modulators of myelin basic protein expression in isolated oligodendrocyte progenitor cells.J. Neurosci. Res. 21, 210–219.

    Article  PubMed  CAS  Google Scholar 

  • Sara V. R. and Carlsson-Skwirut C. (1988) The role of the insulin-like growth factors in the regulation of brain development.Prog. Brain Res. 73, 87–99.

    Article  PubMed  CAS  Google Scholar 

  • Sara V. R., Carlsson-Skwirut C., Andersson C., Hall E., Sjogren B., Holmgren A., and Jornvall H. (1986) characterization of somatomedins from human fetal brain: identification of a variant form of insulin-like growth factor I.Proc. Natl. Acad. Sci. USA 83, 4904–4907.

    Article  PubMed  CAS  Google Scholar 

  • Sara V., and Hall K. (1990) Insulin-like growth factors and their binding proteins.Physiological Reviews 70, 591–614.

    PubMed  CAS  Google Scholar 

  • Schoenle E. J., Haselbacher G. K., Briner J. B., Janzer R. C., Gammeltoft S., Humbel R. E., and Prader A. (1986) Elevated concentration of IGF-II in brain tissue from an infant with macrenephaly.J. Pediatrics 108, 737–740.

    Article  CAS  Google Scholar 

  • Shapiro B., Waligora K., and Pimstone B. L. (1978) Generation of somatomedin activity in response to growth hormone and insulin from isolated perfused livers of normal and protein malnourished rats.J. Endocrinology 79, 369–373.

    CAS  Google Scholar 

  • Shemer J., Raizada M. K., Masters B. A., Ota, A., and LeRoith D. (1987) Insulin-like growth factor I receptors in neuronal and glial cells. Characterization and biological effects in primary culture.J. Biol. Chem. 262, 7693–769.

    PubMed  CAS  Google Scholar 

  • Shimatsu A. and Rotwein P. (1987) Mosaic Evolution of the Insulin-like Growth Factors.J. Biol. Chem. 262, 7894–7900.

    PubMed  CAS  Google Scholar 

  • Sjoberg J. and Kanje M. (1989) Insulin-like growth factor (IGF-1) as a stimulator of regeneration in the freeze-injured rat sciatic nerve.Brain Res. 485, 102–108.

    Article  PubMed  CAS  Google Scholar 

  • Smith M., Clemens J., Kerchner G. A., and Mendelsohn L. G. (1988) The insulin-like growth factor-II (IGF-II) receptor of rat brain: regional distribution visualized by autoradiography.Brain Res. 445, 241–246.

    Article  PubMed  CAS  Google Scholar 

  • Snyder E. Y. and Kim S. U. (1980) Insulin is it a nerve survival factor?Brain Res. 565–571.

  • Soares M., Ishii D., and Efstratiadis A. (1985) Developmental and tissue-specific expression of a family of transcripts related to rat insulin-like growth factor II mRNA.Nucleic Acids Research 13, 1119–1134.

    Article  PubMed  CAS  Google Scholar 

  • Soares M. B., Turken A., Ishii D. N., Mills L., Episkopou V., Cotter S., Zeitlin S., and Efstratiadis A. (1986) Rat insulin-like growth factor II gene. A single gene with two promoters expressing a multitranscript family.J. Mol. Biol. 192, 737–752.

    Article  PubMed  CAS  Google Scholar 

  • Spencer E., Ross M., and Smith B. (1983) The identity of human insulin-like growth factors I and II with somatomedins C and A and homology with rat IGFI and II, inInsulin-Like Growth Factors/Somatomedins: Basic Chemistry, Biology, Clinical Importance, Walter de Gruyter, Berlin, New York, pp. 81–96.

    Google Scholar 

  • Stempien M. M., Fong N. M., Rall L. B., and Bell G. I. (1986), Sequence of a placental cDNA encoding the mouse insulin-like growth factor II precursor.DNA 5, 357–361.

    PubMed  CAS  Google Scholar 

  • Stylianopoulou F., Herbert J., Soares M. B., and Efstratiadis A. (1988) Expression of the insulin-like growth factor II gene in the choroid plexus and the leptomeninges of the adult rat central nervous system.Proc. Natl. Acad. Sci. USA 85, 141–145.

    Article  PubMed  CAS  Google Scholar 

  • Sussenbach J. S. (1989) The gene structure of the insulin like growth factor family.Progress in Growth Factor Research 1, 33–48.

    Article  PubMed  CAS  Google Scholar 

  • Tannenbaum G. S., Guyda H. J., and Posner B. I. (1983) Insulin-like growth factors: a role in growth hormone negative feedback and body weight regulation via brain.Science 220, 77–79.

    Article  PubMed  CAS  Google Scholar 

  • Tavakkol A., Simmen F., and Simmen R. (1988) Porcine insulin-like growth factor-I (pIGF complementary deoxyribonucleic acid cloning and uterine expression of messenger ribonucleic acid encoding evolutionarily conserved IGF-I peptides.Mol. Endocrinol. 2, 674–681.

    PubMed  CAS  Google Scholar 

  • Tham A., Sara V. R., Borg S., and Wetterberg L. (1986) Circulating levels of insulin-like growth factors 1 and 2 and somatomedin B in alcoholic patients.Psychiatry Res. 18, 301–308.

    Article  PubMed  CAS  Google Scholar 

  • Tong P. Y., Tollefsen S. E., and Kornfeld S. (1988) The cation-independent mannose 6-phosphate receptor binds insulin-like growth factor II.J. Biol. Chem. 263, 2585–2588.

    PubMed  CAS  Google Scholar 

  • Toran-Allerand C. D., Ellis L., and Pfenninger K. H. (1988) Estrogen and insulin synergism in neurite growth enhancement in vitro: mediation of steroid effects by interactions with growth factors?Developmental Brain Research 41, 87–100.

    Article  Google Scholar 

  • Torres-Aleman I., Naftolin F., and Robbins R. J. (1989) Growth promoting effects of IGF-I on fetal hypothalamic cell lines under serum-free culture conditions.Int. J. Dev. Neurosci. 7, 195–202.

    Article  PubMed  CAS  Google Scholar 

  • Tseng L., Brown A., Yang Y., Romanus J., Orowski C., Taylor T., and Rechler M. (1989) The fetal rat binding protein for insulin-like growth factors is expressed in the choroid plexus and cerebrospinal fluid of adult rats.Mol. Endocrinol. 10, 1559–1568.

    Google Scholar 

  • Ueno T., Takahashi K., Matsuguchi T., Endo H., and Yamamoto M. (1987) A new leader exon identified in the rat insulin-like growth factor II gene.Biochem. Biophys. Res. Commun. 148, 344–349.

    Article  PubMed  CAS  Google Scholar 

  • Ueno T., Takahashi K., Matsuguchi T., Endo H., and Yamamoto M. (1988) Transcriptional deviation of the rat insulin-like growth factor II gene initiated at three alternative leader-exons between neonatal tissues and ascites hepatomas.Biochimica et Biophysicca Acta 950, 411–419.

    CAS  Google Scholar 

  • Ueno T., Takahashi K., Matsuguchi T., Ikejiri K., Endo H., and Yamamoto (1989) Multiple polyadenylation sites in a large 3′-most exon of the rat insulin-like growth factor II gene.Biochimica et Biophysica Acta 1009, 27–34.

    PubMed  CAS  Google Scholar 

  • Underwood L. E., Clemmons D. R., Maes M., D’Ercole A. J., and Ketelslegers J. (1986) Regulation of somatomedin-C/insulin-like growth factor II by nutrients.Hormone Res. 24, 166–176.

    PubMed  CAS  Google Scholar 

  • Uthne K. (1973) Human somatomedins: pruification and studies on their biological actions.Acta Endocrinol. 73 (suppl. 175), 1–35.

    Google Scholar 

  • van der Pal R., Koper J. W., van Golde L. M., and Lopes-Cadozo M. (1988) Effects of insulin and insulin-like growth factor (IGF-I) on oligodendrocyte-enriched glial cultures.J. Neurosci. Res. 19, 483–490.

    Article  PubMed  Google Scholar 

  • Van Wyk J., Underwood L., Hintz R., Clemmons D., Voina S., and Weaver R. (1974) The somatomedins: a family of insulin-like hormones under growth hormone control.Rec. Progr. Horm. Res. 30, 259–318.

    PubMed  Google Scholar 

  • Werther G. A., Abate M., Hogg, A., Cheesman H., Oldfield B., Hards D., Hudson P., Power B., Freed K., and Herington A. C. (1990) Localization of insulin-like growth factor-I mRNA in rat brain by in situ hybridization-relationship to IGF-I receptors.Mol. Endocrinol. 4, 773–778.

    PubMed  CAS  Google Scholar 

  • Whitfield H. J., Bruni C. B., Frunzio R., Terrell J. E., Nissley S. P., and Rechler M. M. (1984) Isolation of a cDNA clone encoding rat insulin-like growth factor-II precursor.Nature 312, 277–280.

    Article  PubMed  CAS  Google Scholar 

  • Wiggins R. C. (1982) Myelin development and nutritional insufficiency.Brain Res. 4, 151–175.

    Article  CAS  Google Scholar 

  • Woods S., Lotter E., McKay L., and Porte D. (1979) Chronic intracerebroventricular infusion of insulin reduces food intake and body weight of baboons.Nature 282, 503–505.

    Article  PubMed  CAS  Google Scholar 

  • Xue Z., Le Douarin N., and Smith J. (1988) Insulin and insulin-like growth factor-I can trigger the differentiation of catecholaminergic precursors in cultures of dorsal root ganglia.Cell Differ. Dev. 25, 1–10.

    PubMed  CAS  Google Scholar 

  • Yamashita S. and Melmed S. (1986) Insulin-like growth factor I action on rat anterior pituitary cells: suppression of growth hormone secretion and messenger ribonucleic acid levels.Endocrinology 118, 176–182.

    Article  PubMed  CAS  Google Scholar 

  • Yang, J. W., Raizada M. K., and Fellows R. E. (1981) Effects of insulin on cultured rat brain cells: stimulation of ornithine decarboxylase activity.J. Neurochem. 36, 1050–1057.

    Article  PubMed  CAS  Google Scholar 

  • Zapf J., Walter H., and Froesch E. (1981) Radioimmunological determination of insulin-like growth factors I and II in normal subjects and in patients with growth disorders and extrapancreatic tumor hypoglycemia.J. Clin. Invest. 68, 1321–1330.

    Article  PubMed  CAS  Google Scholar 

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Hepler, J.E., Lund, P.K. Molecular biology of the insulin-like growth factors. Mol Neurobiol 4, 93–127 (1990). https://doi.org/10.1007/BF02935586

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