Zusammenfassung
Ein mathematisches Modell der Granulozytenbildung ist durch Ausnutzung von drei negativen Rückkopplungsschleifen (d.h. zwei Chalon-Schleifen und eine Leukozytose-induzierte Faktor-Schleife) entwickelt worden, sowie ein kurzzeitiges Signal zur Zellteilung, induziert durch den Zelltod. Experimentelle Regenerationskurven, ausgelöst durch Behandlung von Mäusen mit Cyclophosphamid- oder Vinblastin-Injektion, wurden mit relativer Genauigkeit simuliert. Die Simulationen ergaben (i), daß unreife Granulozyten eine beträchtliche Kapazität zur Selbsterneuerung besitzen. (ii) Wenn ein Inhibitor der Zellvermehrung (Chalon) eine wichtige Regulierungsfunktion hat, ist anzunehmen, daß er nicht nur von reifen, sondern auch von unreifen Granulozyten produziert wird; (iii) Chalone können die Reifungs- sowie die Generationszeiten beeinflussen.
Es ist möglich, diese experimentellen Thesen und andere Schlußfolgerungen aus den Modellergebnissen zu überprüfen.
Summary
A mathematical model of granulocyte formation and its regulation has been made, using three negative feedback loops (i.e., two “chalone loops” and one “leucocytosis-inducing factor loop”, as well as a short-lasting signal to cell division, induced by cell death. Experimental regeneration curves obtained after treating mice with two injections of cyclophosphamide or with one injection of vinblastine were reasonably well simulated. The simulations suggested that (i) immature granulocytes have a considerable capacity for additional mitoses (selfrenewal); (ii) if an inhibitor of cell multiplication (chalone) is an important regulatory factor, it may be produced not only by mature, but also by immature granulocytes; and (iii) chalone may affect maturation times as well as generation times. It is possible to test experimentally these and other deductions mode from the model.
References
Benestad HB (1972) Cell kinetics in diffusion chambers: Survival, resumption of proliferation, and maturation rate of murine haemopoietic cells. Cell Tissue Kinet 5: 421–431
Benestad HB (1977) Hydroxyurea (HU) in experimental hematology. II. Similarities and dissimilarities between HU and3H-thymidine killing. Exp Hematol 5: 415–422
Benestad HB, Rytömaa T (1977) Regulation of maturation rate of mouse granulocytes. Cell Tissue Kinet 10: 461–468
Benestad HB, Testa NG, Lajtha LG (1978) Inhibition of haemopoietic stem cell proliferation by a diffusible product of bone marrow cells. Scand J Haematol 20: 18–24
Beran M, Tribukait B (1973) Quantitative aspects of post-irradiation granulocytic recovery. The effect of the erythropoietic suppression subsequent to hypoxia and hypertransfusio. Scand J Haematol 11: 298–306
Bierman HR, Hood JE (1972) Study of a granulopoietin from endotoxin-stimulated mouse plasma. Br J Haematol 22: 145–153
Boggs DR, Chervenick PA, Marsh JC, Cartwright GE, Wintrobe MM (1968) Neutrophil-releasing activity in plasma of dogs injected with endotoxin. J Lab Clin Med 72: 177–191
Breivik H (1972) Response of multipotent (CFU) and granulocyte (Diffusion chamber assay) progenitor cells and differentiating cells of murine haematopoietic tissues to a perturbation of the steady state. J Cell Physiol 79: 171–180
Broxmeyer HE, Moore MAS, Ralph P (1977) Cell-free granulocyte colony inhibiting activity derived from human polymorphonuclear neutrophils. Exp Hematol 5: 87–102
Bøyum A, Carsten AL, Laerum OD (1974) Haematopoiesis measured by spleen colony and diffusion chamber techniques in mice treated with one or two injections of cyclophosphamide. Br J Haematol 26, 605–614
Bøyum A, Breivik H (1973) Kinetics of murine haematopoietic cell proliferation in diffusion chambers. Cell Tissue Kinet 6: 101–110
Chervenick PA, Boggs DR (1969) Decreased neutrophils and megakaryocytes in anemic mice of genotype W/Wv. J Cell Physiol 73: 25–30
Chervenick PA, Boggs DR, Marsh JC, Cartwright GE, Wintrobe MM (1968) Quantitative studies of blood and bone marrow neutrophils in normal mice. Am J Physiol 215: 353–360
Coggle JE, Gordon MY (1975) Quantitative measurements on the haemopoietic systems of three strains of mice. Exp Hematol 3: 181–186
Delmonte L (1974) Hemopoietic cell line-specific effects of renal granulopoietic factor (GPF) on transplantable mouse marrow stem cells: comparison with erythrocyte stimulating factor (ESF) and endotoxin. Cell Tissue Kinet 7: 3–18
Fliedner TM, Fache I, Adolphi C (1966) Über die Umsatzkinetik der Leukocyten bei keimfreien Mäusen. Schweiz Med Wochenschr 96: 1236–1238
Frindel E, Tubiana M, Vassort F (1967) Generation cycle of mouse bone marrow. Nature (Lond) 214: 1017–1018
Gordon AS, Handler ES, Sigel CD, Dornfest BS, LoBue J (1964) Plasma factors influencing leucocyte release in rats. Ann NY Acad Sci 113: 766–789
Goud TJLM, Van Furth R (1975) Proliferative characteristics of monoblasts grown in vitro. J Exp Med 142: 1200–1217
Josvasen N, Bøyum A (1973) Haematopoiesis in busulphan-treated mice. A comparison between two different stem cell assays. Scand J Haematol 11: 78–86
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Smeby, W., Benestad, H.B. Simulation of murine granulopoiesis. Blut 41, 47–60 (1980). https://doi.org/10.1007/BF01039876
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DOI: https://doi.org/10.1007/BF01039876