Cell-specific mechanisms of TMEM16A Ca(2+)-activated chloride channel in cancer.

Cell-specific mechanisms of TMEM16A Ca(2+)-activated chloride channel in cancer.
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TMEM16A Ca2 激活氯离子通道在癌症中的细胞特异性机制

DOI:
10.1186/s12943-017-0720-x
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发表时间:
2017-09-11
期刊:
影响因子:
37.3
通讯作者:
Xiao Q
Xiao Q
中科院分区:
医学1区
文献类型:
--
作者:
Wang H;Zou L;Ma K;Yu J;Wu H;Wei M;Xiao Q

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TMEM16A(称为 anoctamin 1)Ca2+ 激活的氯离子通道在许多肿瘤中过度表达。 TMEM16A 过度表达可能是由许多具有 11q13 扩增的肿瘤中的基因扩增引起的。 TMEM16A 的表达在许多癌细胞中也通过转录调控、表观遗传调控和 microRNA 受到控制。此外,TMEM16A 在不同的癌症中激活不同的信号通路,例如癌症。乳腺癌中的 EGFR 和 CAMKII 信号传导、肝癌中的 p38 和 ERK1/2 信号传导、头颈鳞状细胞癌和膀胱癌中的 Ras-Raf-MEK-ERK1/2 信号传导以及神经胶质瘤中的 NFκB 信号传导。此外,据报道,TMEM16A 过表达可促进、抑制不同癌细胞中的细胞增殖和迁移,或对细胞增殖和迁移没有影响。由于 TMEM16A 通过激活不同的信号通路在不同的癌细胞中发挥不同的作用,因此我们尝试提出 TMEM16A 以细胞依赖性机制调节癌细胞增殖和迁移的想法。 TMEM16A 的细胞特异性作用可能取决于特定癌症类型特有的 TMEM16A 过表达机制预先确定的细胞环境。 TMEM16A 可能通过其相关蛋白网络、不同激酶的磷酸化以及不同信号通路的参与发挥其细胞特异性作用。此外,我们还讨论了 TMEM16A 通道活性在癌症中的作用,及其作为不同癌症的预后和预测标记物的临床用途。这篇综述强调了 TMEM16A 在癌症中的细胞类型特异性机制,并展望了 TMEM16A 抑制剂作为 TMEM16A 过度表达癌症的潜在治疗方法的前景。
TMEM16A (known as anoctamin 1) Ca2+-activated chloride channel is overexpressed in many tumors. TMEM16A overexpression can be caused by gene amplification in many tumors harboring 11q13 amplification. TMEM16A expression is also controlled in many cancer cells via transcriptional regulation, epigenetic regulation and microRNAs. In addition, TMEM16A activates different signaling pathways in different cancers, e.g. the EGFR and CAMKII signaling in breast cancer, the p38 and ERK1/2 signaling in hepatoma, the Ras-Raf-MEK-ERK1/2 signaling in head and neck squamous cell carcinoma and bladder cancer, and the NFκB signaling in glioma. Furthermore, TMEM16A overexpression has been reported to promote, inhibit, or produce no effects on cell proliferation and migration in different cancer cells. Since TMEM16A exerts different roles in different cancer cells via activation of distinct signaling pathways, we try to develop the idea that TMEM16A regulates cancer cell proliferation and migration in a cell-dependent mechanism. The cell-specific role of TMEM16A may depend on the cellular environment that is predetermined by TMEM16A overexpression mechanisms specific for a particular cancer type. TMEM16A may exert its cell-specific role via its associated protein networks, phosphorylation by different kinases, and involvement of different signaling pathways. In addition, we discuss the role of TMEM16A channel activity in cancer, and its clinical use as a prognostic and predictive marker in different cancers. This review highlights the cell-type specific mechanisms of TMEM16A in cancer, and envisions the promising use of TMEM16A inhibitors as a potential treatment for TMEM16A-overexpressing cancers.
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