Transforming growth factor-beta signaling in epithelial-mesenchymal transition and progression of cancer.

Transforming growth factor-beta signaling in epithelial-mesenchymal transition and progression of cancer.
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DOI:
10.2183/pjab.85.314
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发表时间:
2009
期刊:
Proceedings of the Japan Academy. Series B, Physical and biological sciences
影响因子:
--
通讯作者:
Miyazono K
Miyazono K
中科院分区:
其他
文献类型:
--
作者:
Miyazono K

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转化生长因子-β(Transforming growth factor-β,TGF-β)是一种多功能细胞因子,通过激活Smad和非Smad信号通路诱导生长停滞、组织纤维化和上皮-间质转化(epithelial-mesenchymal transition,EMT)。EMT是分化开关,极化的上皮细胞通过EMT分化为收缩和运动的间充质细胞。细胞运动和侵入能力在EMT时被激活。TGF-β-Smad信号转导系统可诱导多种转录因子的表达,包括δ EF 1/ZEB 1、SIP 1/ZEB 2和Snail/SNAI 1,这些转录因子在TGF-β诱导的EMT中发挥重要作用。此外,TGF-β激活的非Smad信号通路以及与其他信号通路的交互作用在EMT的诱导中发挥重要作用。其中Ras信号与TGF-β-Smad信号协同作用,在EMT的诱导中发挥重要作用。TGF-β抑制剂通过多种机制预防晚期癌症的侵袭和转移,包括抑制EMT。发现抑制TGF-β诱导的EMT而不抑制TGF-β诱导的生长停滞的分子可能是治疗肿瘤侵袭和转移的理想策略。
Transforming growth factor-β (TGF-β) is a multifunctional cytokine that induces growth arrest, tissue fibrosis, and epithelial-mesenchymal transition (EMT) through activation of Smad and non-Smad signaling pathways. EMT is the differentiation switch by which polarized epithelial cells differentiate into contractile and motile mesenchymal cells. Cell motility and invasive capacity are activated upon EMT. Multiple transcription factors, including δEF1/ZEB1, SIP1/ZEB2, and Snail/SNAI1, are induced by TGF-β–Smad signaling and play critical roles in TGF-β-induced EMT. In addition, both non-Smad signaling activated by TGF-β and cross-talk with other signaling pathways play important roles in induction of EMT. Of these, Ras signaling synergizes with TGF-β-Smad signaling, and plays an important role in the induction of EMT. TGF-β inhibitors prevent invasion and metastasis of advanced cancer through multiple mechanisms, including inhibition of EMT. The discovery of molecules that inhibit TGF-β-induced EMT but not TGF-β-induced growth arrest may be an ideal strategy for treatment of invasion and metastasis of cancer.
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