PMID- 33556719 OWN - NLM STAT- MEDLINE DCOM- 20211207 LR - 20211214 IS - 1532-3102 (Electronic) IS - 0143-4004 (Linking) VI - 105 DP - 2021 Feb TI - Involvement of signal transducers and activators of transcription in trophoblast differentiation. PG - 94-103 LID - S0143-4004(21)00029-1 [pii] LID - 10.1016/j.placenta.2021.01.021 [doi] AB - INTRODUCTION: To explore the involvement of signal transducers and activators of transcription (STATs) in trophoblast differentiation. METHODS AND RESULTS: First, the localization of STATs in human placentas was detected via immunohistochemistry (IHC) and immunofluorescence (IF). Cytotrophoblasts (CTBs) expressed both STAT1 and 3, but syncytiotrophoblasts (STBs) did not. Staining for these two proteins showed a distinct upregulation from the proximal part to the distal end of cell columns. STAT5B was mainly expressed in the STBs, low in the CTBs, and absent in the extravillous trophoblasts (EVTs). Next, the 44 placenta samples were tested via western blot (WB) and quantitative real time polymerase chain reaction (qRT-PCR). We found a decrease in STAT1 and 3 and an increase in STAT5B as gestation increased from five to 10 weeks. Then, an in vitro co-culture model of placenta with or without decidua stromal cells (DSCs), as detected via flow cytometry, revealed an increase in the human leukocyte antigen (HLA)-G positive rate in trophoblasts from placentas co-cultured with DSCs, accompanied by an increase in p-STAT1 and 3 and a decrease in p-STAT5 and STAT5B. Finally, mRNA of matrix metalloproteinases (MMPs) and integrins after STAT silencing in HTR-8/SVneo was detected via qRT-PCR. STAT1 silencing decreased MMP9 expression, STAT3 silencing decreased MMP9, integrin alpha6, and beta4 expression, and STAT5B silencing increased MMP2 and integrin beta1 expression. DISCUSSION: Different trophoblasts showed distinct STAT expression profiles which were related to their MMP and integrin expression. DSCs promoted trophoblast differentiation into EVTs, possibly by regulating the STAT expression of the trophoblasts. CI - Copyright (c) 2021 Elsevier Ltd. All rights reserved. FAU - Chen, Chao AU - Chen C AD - Department of Obstetrics and Gynecology, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China; Shanghai Key Laboratory of Gynecologic Oncology, Shanghai, China. FAU - Kang, Xiaomin AU - Kang X AD - Department of Reproductive Medical Center, The First People's Hospital of Yunnan Province, Kunming, Yunnan, China. FAU - Li, Congcong AU - Li C AD - Department of Obstetrics and Gynecology, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China; Shanghai Key Laboratory of Gynecologic Oncology, Shanghai, China. FAU - Guo, Feng AU - Guo F AD - Department of Obstetrics and Gynecology, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China; Shanghai Key Laboratory of Gynecologic Oncology, Shanghai, China. FAU - Wang, Qiaohong AU - Wang Q AD - Department of Obstetrics and Gynecology, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China; Shanghai Key Laboratory of Gynecologic Oncology, Shanghai, China. FAU - Zhao, Aimin AU - Zhao A AD - Department of Obstetrics and Gynecology, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China; Shanghai Key Laboratory of Gynecologic Oncology, Shanghai, China. Electronic address: zamzkh0526@126.com. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20210130 PL - Netherlands TA - Placenta JT - Placenta JID - 8006349 RN - 0 (STAT Transcription Factors) RN - EC 3.4.24.- (Matrix Metalloproteinases) SB - IM MH - Adult MH - Cell Differentiation/*physiology MH - Cell Line MH - Female MH - Humans MH - Matrix Metalloproteinases/genetics/metabolism MH - Placenta/cytology/*metabolism MH - Pregnancy MH - STAT Transcription Factors/genetics/*metabolism MH - Stromal Cells/cytology/metabolism MH - Trophoblasts/cytology/*metabolism MH - Young Adult OTO - NOTNLM OT - Decidual stromal cell OT - Differentiation OT - Integrins OT - Matrix metalloproteinases OT - STAT transcription Factors OT - Trophoblast EDAT- 2021/02/09 06:00 MHDA- 2021/12/15 06:00 CRDT- 2021/02/08 20:15 PHST- 2020/07/15 00:00 [received] PHST- 2020/12/27 00:00 [revised] PHST- 2021/01/27 00:00 [accepted] PHST- 2021/02/09 06:00 [pubmed] PHST- 2021/12/15 06:00 [medline] PHST- 2021/02/08 20:15 [entrez] AID - S0143-4004(21)00029-1 [pii] AID - 10.1016/j.placenta.2021.01.021 [doi] PST - ppublish SO - Placenta. 2021 Feb;105:94-103. doi: 10.1016/j.placenta.2021.01.021. Epub 2021 Jan 30.