FGF21 facilitates autophagy in prostate cancer cells by inhibiting the PI3K-Akt-mTOR signaling pathway.

FGF21 facilitates autophagy in prostate cancer cells by inhibiting the PI3K-Akt-mTOR signaling pathway.
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DOI:
10.1038/s41419-021-03588-w
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发表时间:
2021-03-22
影响因子:
9
通讯作者:
Li L
Li L
中科院分区:
生物学1区
文献类型:
--
作者:
Dai H;Hu W;Zhang L;Jiang F;Mao X;Yang G;Li L

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成纤维细胞生长因子21 (FGF21)在调节糖脂代谢中发挥重要作用,但其在癌症中的作用研究较少。我们的目的是研究FGF21在前列腺癌(PCa)发展中的作用。本研究发现,FGF21在PCa组织和细胞系中的表达明显下调。FGF21抑制LNCaP细胞(PCa细胞系)的增殖和克隆形成,促进细胞凋亡。FGF21还能抑制PCa细胞的迁移和侵袭性。基因本体和京都基因与基因组百科分析显示,FGF21与自噬和磷脂酰肌醇3-激酶- akt激酶-哺乳动物雷帕霉素靶蛋白(PI3K-Akt-mTOR)通路有关。机制上,FGF21通过抑制PI3K-Akt-mTOR-70S6K通路促进LNCaP细胞自噬。此外,FGF21还能抑制裸鼠体内PCa的肿瘤发生。总之,我们的研究结果表明,FGF21抑制PCa细胞增殖,并通过促进自噬促进PCa细胞凋亡。因此,FGF21可能是PCa治疗中一个潜在的新靶点。
Fibroblast growth factor 21 (FGF21) plays an important role in regulating glucose and lipid metabolism, but its role in cancer is less well-studied. We aimed to investigate the action of FGF21 in the development of prostate cancer (PCa). Herein, we found that FGF21 expression was markedly downregulated in PCa tissues and cell lines. FGF21 inhibited the proliferation and clone formation of LNCaP cells (a PCa cell line) and promoted apoptosis. FGF21 also inhibited PCa cell migration and invasiveness. The Gene Ontology and Kyoto Encyclopedia of Genes and Genomes analyses revealed that FGF21 was related to autophagy and the phosphatidylinositol 3-kinase–Akt kinase–mammalian target of rapamycin (PI3K–Akt–mTOR) pathway. Mechanistically, FGF21 promoted autophagy in LNCaP cells by inhibiting the PI3K–Akt–mTOR–70S6K pathway. In addition, FGF21 inhibited PCa tumorigenesis in vivo in nude mice. Altogether, our findings show that FGF21 inhibits PCa cell proliferation and promoted apoptosis in PCa cells through facilitated autophagy. Therefore, FGF21 might be a potential novel target in PCa therapy.
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