TGF-beta receptor levels regulate the specificity of signaling pathway activation and biological effects of TGF-beta.
TGF-beta receptor levels regulate the specificity of signaling pathway activation and biological effects of TGF-beta.
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TGF-β受体水平调节信号通路激活的特异性和TGF-β的生物学效应。
DOI:
10.1016/j.bbamcr.2009.02.001
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发表时间:
2009-07
影响因子:
5.1
通讯作者:
Grady, William M.
中科院分区:
文献类型:
--
作者:
Rojas, Andres;Padidam, Malla;Cress, Dean;Grady, William M.
TGF-β is a pluripotent cytokine that mediates its effects through a receptor composed of TGF-β receptor type II (TGFBR2) and type I (TGFBR1). The TGF-β receptor can regulate Smad and nonSmad signaling pathways, which then ultimately dictate TGF-β's biological effects. We postulated that control of the level of TGFBR2 is a mechanism for regulating the specificity of TGF-β signaling pathway activation and TGF-β's biological effects. We used a precisely regulatable TGFBR2 expression system to assess the effects of TGFBR2 expression levels on signaling and TGF-β mediated apoptosis. We found Smad signaling and MAPK-ERK signaling activation levels correlate directly with TGFBR2 expression levels. Furthermore, p21 levels and TGF-β induced apoptosis appear to depend on relatively high TGFBR2 expression and on the activation of the MAPK-ERK and SMAD pathways. Thus, control of TGFBR2 expression and the differential activation of TGF-β signaling pathways appears to be a mechanism for regulating the specificity of the biological effects of TGF-β.
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通讯作者:
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