EMP2 acts as a suppressor of melanoma and is negatively regulated by mTOR-mediated autophagy

EMP2 acts as a suppressor of melanoma and is negatively regulated by mTOR-mediated autophagy
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EMP2 作为黑色素瘤的抑制因子,并受到 mTOR 介导的自噬的负向调节

DOI:
10.7150/jca.30342
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发表时间:
2019-06
期刊:
影响因子:
3.9
通讯作者:
Jiang Xian
Jiang Xian
中科院分区:
医学3区
文献类型:
--
作者:
Wang Manyi;Li Sijia;Zhang Peng;Wang Yujia;Wang Chunting;Bai Ding;Jiang Xian

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皮肤黑色素瘤是最常见的恶性皮肤肿瘤之一,晚期黑色素瘤预后较差。在本研究中,我们证明了上皮膜蛋白-2(EMP2)通过诱导A375人黑色素瘤细胞系的凋亡来抑制肿瘤的作用。从机制上讲,EMP2在黑色素瘤中的低表达部分是由于mTOR途径介导的自噬蛋白的降解。这些结果表明,自噬以及EMP2水平可能是黑色素瘤的一种有趣的靶向治疗策略。虽然EMP2在黑色素瘤进展和转移中的调控机制还需要进一步的研究,但我们的结果阐明了自噬在黑色素瘤中的功能和机制,并为黑色素瘤的新型靶向治疗提供了新的线索。
Cutaneous melanoma is one of the most common malignant skin tumors and advanced melanoma is usually associated with a poor prognosis. In the current study, we demonstrated the tumor suppressing role of epithelial membrane protein-2 (EMP2) by inducing apoptosis in a A375 human melanoma cell line. Mechanistically, the low expression of EMP2 in melanoma is partially due to autophagic protein degradation mediated by the mTOR pathway. These results suggest there is regulation of autophagy as well as EMP2 levels might be an interesting novel targeted therapeutic strategy for melanoma. Although the further investigation is needed to deeply understand the regulatory mechanisms of EMP2 in melanoma progression and metastasis, our results clarify the functions and mechanisms of autophagy in melanoma, and shed new light on novel targeted therapeutics for melanoma.
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