Decidualization of the human endometrium

Hidetaka Okada, Tomoko Tsuzuki, Hiromi Murata
In: Reproductive Medicine and Biology · 2018 · vol. 17(3) , pp. 220–227 · doi:10.1002/rmb2.12088 · PMID:30013421 · W2793805814
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This review describes the molecular mechanisms of human endometrial stromal cell decidualization, driven by progesterone and regulated proteins, which is critical for pregnancy establishment and associated with reproductive health.

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Abstract

BACKGROUND: Decidualization of the human endometrium, which involves a dramatic morphological and functional differentiation of human endometrial stromal cells (ESCs), is essential for the establishment of a successful pregnancy. Decidualization results from a complex interplay of transcription factors, morphogens, cytokines, cell cycle regulators, and signaling pathways. METHODS: Based on a literature review, the regulation of, and the molecular mechanisms involved in, the decidualization of the endometrium are described. MAIN FINDINGS: Progesterone, together with proteins that are regulated by progesterone and/or cyclic adenosine monophosphate, including homeobox A10, forkhead box O1, signal transducers and activators of transcription, and heart and neural crest derivatives expressed transcript 2, forms a critical network for ESC decidualization and is a prerequisite to successful implantation. Decidualized ESCs contribute to the microenvironment at the feto-maternal interface and its direct or indirect influence on extracellular matrix remodeling, regulation of the local immune response, anti-oxidative stress, and angiogenesis (vascular maturation). Impairment of this process is associated with a variety of pregnancy disorders, including infertility, recurrent miscarriages, and uteroplacental disorders. CONCLUSION: A deeper understanding of the process of decidualization is expected to provide new insights into the fields of reproductive biology and reproductive medicine.

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