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Review
. 2023 Dec;90(6):e13789.
doi: 10.1111/aji.13789.

Endometrial TGFβ signaling fosters early pregnancy development by remodeling the fetomaternal interface

Sydney E Parks  1   2   3 , Ting Geng  1   2 , Diana Monsivais  1   2   3
Affiliations
Review

Endometrial TGFβ signaling fosters early pregnancy development by remodeling the fetomaternal interface

Sydney E Parks et al. Am J Reprod Immunol. 2023 Dec.

Abstract

The endometrium is a unique and highly regenerative tissue with crucial roles during the reproductive lifespan of a woman. As the first site of contact between mother and embryo, the endometrium, and its critical processes of decidualization and immune cell recruitment, play a leading role in the establishment of pregnancy, embryonic development, and reproductive capacity. These integral processes are achieved by the concerted actions of steroid hormones and a myriad of growth factor signaling pathways. This review focuses on the roles of the transforming growth factor β (TGFβ) pathway in the endometrium during the earliest stages of pregnancy through the lens of immune cell regulation and function. We discuss how key ligands in the TGFβ family signal through downstream SMAD transcription factors and ultimately remodel the endometrium into a state suitable for embryo implantation and development. We also focus on the key roles of the TGFβ signaling pathway in recruiting uterine natural killer cells and their collective remodeling of the decidua and spiral arteries. By providing key details about immune cell populations and TGFβ signaling within the endometrium, it is our goal to shed light on the intricate remodeling that is required to achieve a successful pregnancy.

Keywords: decidualization; endometrium; pregnancy; pregnancy loss; transforming growth factor β; uterine natural killer cells.

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Conflict of interest statement

Conflict of Interest Statement

The authors have no conflicts of interest to declare.

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