Infiltrating bone marrow mesenchymal stem cells (BM-MSCs) increase prostate cancer cell invasion via altering the CCL5/HIF2α/androgen receptor signals

Oncotarget
Jie LuoChawnshang Chang

Abstract

Several infiltrating cells in the tumor microenvironment could influence the cancer progression via secreting various cytokines. Here, we found the CCL5 secreted from BM-MSCs suppressed androgen receptor (AR) signals via enhancing the expression of hypoxia inducible factor 2α (HIF2α) in prostate cancer (PCa) cells. Mechanism dissection revealed that the increased HIF2α might alter the AR-HSP90 interaction to suppress the AR transactivation, and inhibition of HIF2α reversed the BM-MSCs-increased PCa stem cell population and PCa cells invasion. Importantly, CCL5 could suppress the prolyl hydroxylases (PHDs) expression, which might then lead to suppress VHL-mediated HIF2α ubiquitination. Together, these results demonstrated that the CCL5 signals from infiltrating BM-MSC cells to HIF2α signals within PCa cells might play a key role to increase PCa stem cell population and PCa metastasis via altering the AR signals. Targeting this newly identified CCL5/HIF2α/AR axis signal axis may allow us to develop a novel way to suppress PCa metastasis.

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Citations

Feb 18, 2016·Stem Cells International·Alastair H Davies, Amina Zoubeidi
Feb 13, 2019·Journal of Cellular Biochemistry·Malgorzata MajTomasz Drewa
Jul 8, 2020·Cancers·Donatella AldinucciNaike Casagrande
Nov 6, 2018·Journal of Cellular and Molecular Medicine·Ziyan ChenGang Chen
Mar 16, 2019·Journal of Clinical Medicine·Kouji Izumi, Atsushi Mizokami
Mar 6, 2021·OncoTargets and Therapy·Renlun HuangSongtao Xiang
Apr 15, 2017·Seminars in Cancer Biology·Kiera RycajDean G Tang
Sep 9, 2017·Disease Models & Mechanisms·Laura Gómez-CuadradoValerie G Brunton
Dec 3, 2021·Clinical & Translational Oncology : Official Publication of the Federation of Spanish Oncology Societies and of the National Cancer Institute of Mexico·F LuoJ Li

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Methods Mentioned

BETA
dissection
ubiquitination
nuclear translocation
ubiquitinaion
co-immunoprecipitation
ubquitination
CoIP
pull-down
Co-IP
PCR

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