CXCL8 enhances proliferation and growth and reduces apoptosis in endometrial stromal cells in an autocrine manner via a CXCR1-triggered PTEN/AKT signal pathway

Human Reproduction
Ming-Qing LiDa-Jin Li

Abstract

Chemokine CXCL8 (also known as IL-8) has been identified as a potential regulator of endometrial stromal cells (ESCs), but it is unclear how CXCL8 regulates the survival of ESCs in the pathogenesis of endometriosis. We assessed the secretion of CXCL8 by enzyme-linked immunosorbent assays and the expression of its receptors, CXCR1 and CXCR2, by in-cell Western assay and immunohistochemistry. The effects of CXCL8 on the activation or expression of various cell mediators were also investigated by in-cell Western assay. The effects of CXCL8 on the proliferation, growth and apoptosis of ESCs in vitro were assessed by BrdU assays, cell counts and annexin V labeling, respectively. Secretion of CXCL8 and expression of CXCR1 in the eutopic ESCs from women with endometriosis were significantly higher than that in control ESCs, but the expression of CXCR2 showed no significant difference between these two cell types. CXCL8 stimulated proliferation and growth and reduced apoptosis of ESCs in an autocrine manner, and these effects were abolished by anti-human CXCL8 and CXCR1 neutralizing antibodies and by a PI3K/Akt inhibitor. Moreover, CXCL8 up-regulated the expression of the anti-apoptotic proteins, survivin and Bcl-2, inhibited the expre...Continue Reading

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Citations

May 8, 2013·Molecular Human Reproduction·Jun ShaoDa-Jin Li
Sep 17, 2013·International Journal of Molecular Sciences·Eleftherios P SamartzisPatrick Imesch
Nov 30, 2013·Human Reproduction·G M BorrelliS Mechsner
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Apr 19, 2017·Stem Cells and Development·Juan-Juan LiZhong-Chao Han
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Mar 4, 2019·Cellular and Molecular Life Sciences : CMLS·Wen-Jie ZhouMing-Qing Li
Dec 15, 2019·Experimental Cell Research·Hwan Ho LeeAllen F Ryan

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