ATF4/CEMIP/PKCα promotes anoikis resistance by enhancing protective autophagy in prostate cancer cells.

ATF4/CEMIP/PKCα promotes anoikis resistance by enhancing protective autophagy in prostate cancer cells.
复制标题

ATF4/CEMIP/PKCα 通过增强前列腺癌细胞的保护性自噬来促进失巢凋亡抵抗

DOI:
10.1038/s41419-021-04494-x
复制
发表时间:
2022-01-10
影响因子:
9
通讯作者:
Xing Y
Xing Y
中科院分区:
生物学1区
文献类型:
--
作者:
Yu Y;Liu B;Li X;Lu D;Yang L;Chen L;Li Y;Cheng L;Lv F;Zhang P;Song Y;Xing Y

文献摘要

参考文献

相似文献

从细胞外基质(ECM)脱离后癌细胞的存活对于转移级联是必不可少的。脱落后的程序性细胞死亡被称为失巢凋亡,作为转移屏障。然而,最具侵略性的癌细胞逃避失巢凋亡和其他细胞死亡模式,以启动转移级联反应。本研究揭示了细胞迁移诱导蛋白(CEMIP)在ECM脱落过程中自噬调节和抗失巢凋亡中的作用。在ECM分离过程中,CEMIP扩增通过依赖于B细胞淋巴瘤-2(Bcl-2)/Beclin 1复合物解离的机制导致保护性自噬诱导。进一步的研究表明,转录因子4(ATF 4)触发CEMIP转录和增强蛋白激酶C α(PKCα)膜转位,调节Bcl-2的丝氨酸70磷酸化,而随后的Bcl-2/Beclin 1复合物的解离导致自噬。因此,CEMIP去分化减弱了体内转移形成。总之,抑制CEMIP介导的保护性自噬可能为转移性前列腺癌(PCa)提供一种治疗策略。本研究揭示了CEMIP在抗失巢凋亡中的新作用,并为寻求转移性前列腺癌的治疗策略提供了新的见解。
The survival of cancer cells after detaching from the extracellular matrix (ECM) is essential for the metastatic cascade. The programmed cell death after detachment is known as anoikis, acting as a metastasis barrier. However, the most aggressive cancer cells escape anoikis and other cell death patterns to initiate the metastatic cascade. This study revealed the role of cell migration-inducing protein (CEMIP) in autophagy modulation and anoikis resistance during ECM detachment. CEMIP amplification during ECM detachment resulted in protective autophagy induction via a mechanism dependent on the dissociation of the B-cell lymphoma-2 (Bcl-2)/Beclin1 complex. Additional investigation revealed that acting transcription factor 4 (ATF4) triggered CEMIP transcription and enhanced protein kinase C alpha (PKCα) membrane translocation, which regulated the serine70 phosphorylation of Bcl-2, while the subsequent dissociation of the Bcl-2/Beclin1 complex led to autophagy. Therefore, CEMIP antagonization attenuated metastasis formation in vivo. In conclusion, inhibiting CEMIP-mediated protective autophagy may provide a therapeutic strategy for metastatic prostate cancer (PCa). This study delineates a novel role of CEMIP in anoikis resistance and provides new insight into seeking therapeutic strategies for metastatic PCa.
强力霉素诱导的尿蛋白酶受体(UPAR)上调了UPAR活动,包括对人前列腺癌细胞系中对厌氧菌的抗性。
DOI: 10.1186/1476-4598-6-34
发表时间: 2007-05-17
期刊: MOLECULAR CANCER
影响因子: 37.3
作者:
Hasanuzzaman, Mohammad;Kutner, Robert;Agha-Mohammadi, Siamak;Reiser, Jakob;Sehgal, Inder
通讯作者: Sehgal, Inder
DOI: 10.1093/jnci/djk182
发表时间: 2007-05-16
期刊: JOURNAL OF THE NATIONAL CANCER INSTITUTE
影响因子: --
作者:
Mawji, Imtiaz A.;Simpson, Craig D.;Schimmer, Aaron D.
通讯作者: Schimmer, Aaron D.
DOI: 10.1245/s10434-009-0469-6
发表时间: 2009-07-01
影响因子: 3.7
作者:
Matsuzaki, Shinji;Tanaka, Fumiaki;Mori, Masaki
通讯作者: Mori, Masaki
DOI: 10.1016/j.jhep.2010.11.005
发表时间: 2011-04
影响因子: 25.7
作者:
Malhi, Harmeet;Kaufman, Randal J.
通讯作者: Kaufman, Randal J.
DOI: 10.1074/jbc.ra118.002829
发表时间: 2019-05-17
影响因子: 4.8
作者:
Luhr, Morten;Torgersen, Maria Lyngaas;Engedal, Nikolai
通讯作者: Engedal, Nikolai