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Deprecated: Implicit conversion from float 211.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534 J+Immunotoxicol 2014 ; 11 (4): 319-27 Nephropedia Template TP
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Modulation of Bone Morphogenic Protein Signaling in T-Cells for Cancer Immunotherapy #MMPMID24350726
Kuczma M; Kurczewska A; Kraj P
J Immunotoxicol 2014[Oct]; 11 (4): 319-27 PMID24350726show ga
Immunotherapy is becoming an increasingly attractive therapeutic alternative for conventional cancer therapy. In recent years Foxp3+ regulatory T-cells (TR) were identified as the major obstacle to effective cancer immunotherapy. The abundance of these cells in peripheral blood is increased in patients with multiple types of cancer and their prevalence among tumor-infiltrating lymphocytes correlated with poor clinical prognosis. In contrast, removal or inactivation of TR cells led to enhanced antitumor immune response and better efficacy of cancer vaccines. We report that Bone Morphogenic Protein Receptor 1? (BMPR1?, Alk-3), is expressed by activated effector CD4+ and TR cells and modulates functions of both cell types. Bone Morphogenic Proteins (BMPs) belong to the transforming growth factor (TGF)-? family of cytokines that also include TGF? and activins. BMPs play crucial roles in- embryonic development, tissue differentiation and homeostasis and development of cancer. It was demonstrated that BMPs and activins synergize with TGF? to regulate thymic T-cell development, maintain TR cells and control peripheral tolerance. Inactivation of BMPR1? in T-cells results in impaired thymic and peripheral generation of TR cells. BMPR1? -deficient activated T-cells produced higher level of interferon (IFN)-? than BMPR1?-sufficient T-cells. Moreover, transplanted B16 melanoma tumors grew smaller in mice lacking expression of BMPR1? in T-cells and tumors had few infiltrating TR cells and a higher proportion of CD8+ T-cells than wild-type mice.