AZGP1 is androgen responsive and involved in AR-induced prostate cancer cell proliferation and metastasis.

Abstract:

:Alpha-2-glycoprotein 1, zinc-binding (AZGP1), known as zinc-alpha-2-glycoprotein (ZAG), is a multifunctional secretory glycoprotein and relevant to cancer metastasis. Little is known regarding the underlying mechanisms of AZGP1 in prostate cancer (PCa). In the present study, we report that AZGP1 is an androgen-responsive gene, which is involved in AR-induced PCa cell proliferation and metastasis. In clinical specimens, the expression of AZGP1 in PCa tissues is markedly higher than that in adjacent normal tissues. In cultures, expression of AZGP1 is upregulated by the androgen-AR axis at both messenger RNA and protein levels. Furthermore, Chip-Seq assay identifies canonical androgen-responsive elements (AREs) at AZGP1 enhancer; and dual-luciferase reporter assays reveal that the AREs is highly responsive to androgen whereas mutations of the AREs abolish the reporter activity. In addition, AZGP1 promotes G1/S phase transition and cell cycle progress by increasing cyclin D1 levels in PCa cells. Functional studies demonstrate that knocking down endogenous AZGP1 expression in LNCaP and CWR22Rv1 cells largely weaken androgen/AR axis-induced cell migration and invasion. In vivo xenotransplantation tumor experiments also show that AZGP1 involves in androgen/AR axis-mediated PCa cell proliferation. Taken together, our study implicates for the first time that AZGP1 is an AR target gene and is involved in androgen/AR axis-mediated cell proliferation and metastasis in primary PCa.

journal_name

J Cell Physiol

authors

Cao R,Ke M,Wu Q,Tian Q,Liu L,Dai Z,Lu S,Liu P

doi

10.1002/jcp.28366

subject

Has Abstract

pub_date

2019-08-01 00:00:00

pages

17444-17458

issue

10

eissn

0021-9541

issn

1097-4652

journal_volume

234

pub_type

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