Abstract
Toll-like receptors (TLRs) are probably the most important class of pattern-recognition receptors. Members of the TLR family play key roles in the both innate and adaptive immune responses. Recognition of pathogen-associated molecular patterns (PAMPs) by TLRs, either alone or in heterodimerization with other TLR or non-TLR receptors, induces the production of signals that are responsible for the activation of genes important for an effective host defense, especially those of proinflammatory cytokines. Thus, TLRs are involved in the development of many pathological conditions including infectious diseases, tissue damage, and cancer especially. In this review, the contribution of TLRs to tumorgenesis is evaluated. We hope to provide new insight into the progression of cancer and more importantly into the potential for TLRs as targets of therapeutics.
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References
Gay NJ, Keith FJ. Drosophila toll and IL-1 receptor. Nature, 1991, 351: 355–356.
Gay NJ, Gangloff M. Structure and function of Toll receptors and their ligands. Annu Rev Biochem, 2007, 76: 141–165.
Janeway CA Jr. Approaching the asymptote? Evolution and revolution in immunology. Cold Spring Harb Symp Quant Biol, 1989, 54: 1–13.
Akira S, Takeda K. Toll-like receptor signalling. Nat Rev Immunol, 2004, 4: 499–511.
Takeda K, Akira S. TLR signaling pathways. Semin Immunol, 2004, 16: 3–9.
Huang B, Zhao J, Shen S, et al. Listeria monocytogenes promotes tumor growth via tumor cell toll-like receptor 2 signaling. Cancer Res, 2007, 67: 4346–4352.
Hassan F, Islam S, Tumurkhuu G, et al. Intracellular expression of toll-like receptor 4 in neuroblastoma cells and their unresponsiveness to lipopolysaccharide. BMC Cancer, 2006, 6: 281–289.
Jego G, Bataille R, Geffroy-Luseau A, et al. Pathogen associated molecular patterns are growth and survival factors for human myeloma cells through toll-like receptors. Leukemia, 2006, 20: 1130–1137.
Killeen SD, Wang JH, Andrews EJ, et al. Exploitation of the Toll-like receptor system in cancer: a doubled-edged sword? Br J Cancer, 2006, 95: 247–252.
Chang YJ, Wu MS, Lin JT, et al. Induction of cyclooxygenase-2 overexpression in human gastric epithelial cells by Helicobacter pylori involves TLR2/TLR9 and c-Src-dependent nuclear factor-kappaB activation. Mol Pharmacol, 2004, 66: 1465–1477.
Wang JH, Manning BJ, Wu QD, et al. Endotoxin/lipopolysaccharide activates NF-kappa B and enhances tumor cell adhesion and invasion through a beta 1 integrin-dependent mechanism. J Immunol, 2003, 170: 795–804.
Kelly MG, Alvero AB, Chen R, et al. TLR-4 signaling promotes tumor growth and paclitaxel chemoresistance in ovarian cancer. Cancer Res, 2006, 66: 3859–3868.
Luo JL, Maeda S, Hsu LC, et al. Inhibition of NF-κB in cancer cells converts inflammation-induced tumor growth mediated by TNFα to TRAIL-mediated tumor regression. Cancer Cell, 2004, 6: 297–305.
Tillman DK Jr, Caroll MT. Topical imiquimod therapy for basal and squamous cell carcinomas: a clinical experience. Cutis, 2007, 79: 241–248.
Okamura Y, Watari M, Jerud ES, et al. The extra domain A of fibronectin activates Toll-like receptor 4. J Biol Chem, 2001, 276: 10229–10233.
Ilvesaro JM, Merrell MA, Swain TM, et al. Toll-like receptor-9 agonists stimulate prostate cancer invasion in vitro. Prostate, 2007, 67: 774–781.
Spaner DE, Masellis A. Toll-like receptor agonists in the treatment of chronic lymphocytic leukemia. Leukemia, 2007, 21: 53–60.
Mellor A, Baban B, Chandler P, et al. CpG oligonucleotides induce splenic CD19+ DCs to acquire IDO-dependent T cell regulatory functions via IFN signaling. J Immunol, 2005, 175: 5601–5605.
Wang HY, Wang RF. Regulatory T cells and cancer. CurropinImmunol, 2007, 19: 217–223.
Sutmuller RP, den Brok MH, Kramer M, et al. Toll-like receptor 2 controls expansion and function of regulatory T cells. J Clin Invest, 2006, 116: 485–494.
Deane JA, Bolland S. Nucleic acid-sensing TLRs as modifiers of autoimmunity. J Immunol, 2006, 177: 6573–6578.
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He, L., Zhang, L., Li, Z. et al. The roles of toll-like receptors in carcinogenesis and cancer immunotherapy. Chin. -Ger. J. Clin. Oncol. 9, 118–120 (2010). https://doi.org/10.1007/s10330-010-0008-8
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DOI: https://doi.org/10.1007/s10330-010-0008-8