4.5 Article

Regulatory action of PGRMC1 on cyclic AMP-mediated COX2 expression in human endometrial cells

期刊

JOURNAL OF PHARMACOLOGICAL SCIENCES
卷 153, 期 4, 页码 188-196

出版社

JAPANESE PHARMACOLOGICAL SOC
DOI: 10.1016/j.jphs.2023.09.006

关键词

Endometrium; Decidualization; Cyclooxygenase 2 (COX2); Forkhead box protein O1 (FOXO1); Progesterone receptor membrane; component 1 (PGRMC1)

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The downregulation of PGRMC1 is associated with cellular senescence and the differentiation of endometrial cells. The study reveals the role of PGRMC1 in COX2 expression, further promoting cellular differentiation and maturation.
Human endometrial stromal cells (ESCs) undergo differentiation, known as decidualization, and endometrial epithelial cells mature around the embryo implantation stage. In the uterus, cyclooxygenase 2 (COX2), the rate-limiting enzyme that produces prostaglandin E2, is expressed in endometrial stromal and epithelial cells, and promotes decidualization of the former cells. Our recent study demonstrated that progesterone receptor membrane component 1 (PGRMC1) is downregulated during decidualization and may be involved in cellular senescence associated with decidualization via the transcription factor forkhead box protein O1 (FOXO1). Therefore, we investigated the role of PGRMC1 in COX2 expression during differentiation and maturation of endometrial stromal and epithelial cells. Inhibition or knockdown of PGRMC1 significantly enhanced differentiation stimuli-induced COX2 expression in both cell types. However, this COX2 expression was suppressed by FOXO1 knockdown or nuclear factor-kappa B (NF-kB) inhibition. Silencing of COX2 expression inhibited PGRMC1 knockdown-induced expression of decidual markers in ESCs. Thus, PGRMC1 may be linked to FOXO1- and NF-kB-mediated COX2 expression in endometrial cells. Taken together, our data suggest that downregulation of PGRMC1 expression facilitates differentiation of endometrial cells, i.e., decidualization and glandular maturation, via upregulation of COX2 expression. (c) 2023 The Authors. Production and hosting by Elsevier B.V. on behalf of Japanese Pharmacological Society. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/ licenses/by-nc-nd/4.0/).

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