Hypomethylation of IL6ST promotes development of endometriosis by activating JAK2/STAT3 signaling pathway.

Endometriosis is a chronic inflammatory disorder characterized by presence of endometrial tissue outside the uterine cavity. Immunohistochemical analysis (IHC) revealed markedly elevated expression of IL6ST in endometrial tissue of patients with ovarian endometriosis. Level of methylation of IL6ST i...

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Main Authors: Yue Hu, Hailong Chen, Lijuan Jin, Xiumei Chi, Jian Zhao, Qinying Cao
Format: Article
Language:English
Published: Public Library of Science (PLoS) 2025-01-01
Series:PLoS ONE
Online Access:https://doi.org/10.1371/journal.pone.0317569
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author Yue Hu
Hailong Chen
Lijuan Jin
Xiumei Chi
Jian Zhao
Qinying Cao
author_facet Yue Hu
Hailong Chen
Lijuan Jin
Xiumei Chi
Jian Zhao
Qinying Cao
author_sort Yue Hu
collection DOAJ
description Endometriosis is a chronic inflammatory disorder characterized by presence of endometrial tissue outside the uterine cavity. Immunohistochemical analysis (IHC) revealed markedly elevated expression of IL6ST in endometrial tissue of patients with ovarian endometriosis. Level of methylation of IL6ST is diminished in patients with endometriosis, whereas level of mRNA expression is markedly elevated by RT-PCR. Cell Counting Kit-8, Transwell, Terminal deoxynucleotidyl transferase dUTP nick end labeling assays substantiated endometrial stromal cells stably transfected with 3*FLAG-IL6ST plasmid exhibited enhanced viability, augmented invasive capacity, and notable reduction in apoptosis rates. Furthermore, IL6ST facilitated progression of endometriosis by activating mitogen-activated protein kinase 9/Signal Transducer and Activator of Transcription 3 signaling pathway. Western blot analysis revealed significantly elevated protein levels of p-JAK2/JAK2, p-STAT3/STAT3, HIF-1α, and VEGF in IL6ST overexpression group. Conversely, JAK2/STAT3 inhibitor WP1066 had markedly reduced p-JAK2 and p-STAT3 protein levels in IL6ST overexpression group. Inhibiting JAK2/STAT3 signaling pathway had mitigating effect on proliferative and invasive enhancement of endometrial stromal cells, as well as inhibition of apoptosis induced by IL6ST. These findings offer novel potential targets and strategies for the treatment of endometriosis.
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spelling doaj-art-0a0da890efff4a7d8bb507c99206ca392025-08-20T01:47:28ZengPublic Library of Science (PLoS)PLoS ONE1932-62032025-01-01201e031756910.1371/journal.pone.0317569Hypomethylation of IL6ST promotes development of endometriosis by activating JAK2/STAT3 signaling pathway.Yue HuHailong ChenLijuan JinXiumei ChiJian ZhaoQinying CaoEndometriosis is a chronic inflammatory disorder characterized by presence of endometrial tissue outside the uterine cavity. Immunohistochemical analysis (IHC) revealed markedly elevated expression of IL6ST in endometrial tissue of patients with ovarian endometriosis. Level of methylation of IL6ST is diminished in patients with endometriosis, whereas level of mRNA expression is markedly elevated by RT-PCR. Cell Counting Kit-8, Transwell, Terminal deoxynucleotidyl transferase dUTP nick end labeling assays substantiated endometrial stromal cells stably transfected with 3*FLAG-IL6ST plasmid exhibited enhanced viability, augmented invasive capacity, and notable reduction in apoptosis rates. Furthermore, IL6ST facilitated progression of endometriosis by activating mitogen-activated protein kinase 9/Signal Transducer and Activator of Transcription 3 signaling pathway. Western blot analysis revealed significantly elevated protein levels of p-JAK2/JAK2, p-STAT3/STAT3, HIF-1α, and VEGF in IL6ST overexpression group. Conversely, JAK2/STAT3 inhibitor WP1066 had markedly reduced p-JAK2 and p-STAT3 protein levels in IL6ST overexpression group. Inhibiting JAK2/STAT3 signaling pathway had mitigating effect on proliferative and invasive enhancement of endometrial stromal cells, as well as inhibition of apoptosis induced by IL6ST. These findings offer novel potential targets and strategies for the treatment of endometriosis.https://doi.org/10.1371/journal.pone.0317569
spellingShingle Yue Hu
Hailong Chen
Lijuan Jin
Xiumei Chi
Jian Zhao
Qinying Cao
Hypomethylation of IL6ST promotes development of endometriosis by activating JAK2/STAT3 signaling pathway.
PLoS ONE
title Hypomethylation of IL6ST promotes development of endometriosis by activating JAK2/STAT3 signaling pathway.
title_full Hypomethylation of IL6ST promotes development of endometriosis by activating JAK2/STAT3 signaling pathway.
title_fullStr Hypomethylation of IL6ST promotes development of endometriosis by activating JAK2/STAT3 signaling pathway.
title_full_unstemmed Hypomethylation of IL6ST promotes development of endometriosis by activating JAK2/STAT3 signaling pathway.
title_short Hypomethylation of IL6ST promotes development of endometriosis by activating JAK2/STAT3 signaling pathway.
title_sort hypomethylation of il6st promotes development of endometriosis by activating jak2 stat3 signaling pathway
url https://doi.org/10.1371/journal.pone.0317569
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