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Decreased Cyr61 under hypoxia induces extravillous trophoblasts apoptosis and preeclampsia

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Summary

During placental development, oxygen environment is not only critical for trophoblasts migration and invasion, but also fundamental for appropriate placental perfusion. Cysteine-rich 61 (Cyr61, CCN1) was expressed in the extravillous trophoblasts (EVTs) and decreased in preeclampsia. Its regulatory properties in human first-trimester extravillous trophoblast cell line (TEV-1 cells) upon a low oxygen tension were investigated. The present study examined functional changes involved in adaptation to hypoxia of the TEV-1 cells, using cobalt chloride (CoCl2) as hypoxic mimic. It was found that hypoxia inhibited growth of TEV-1 cells and induced the increase of cell apoptosis (P<0.05). The Cyr61 expression in human EVTs was transcriptionally induced by CoCl2. Inappropriate EVTs apoptosis has been implicated in the failure of trophoblasts to fully invade and modify the uterine environment and Cyr61 down-regulation, potentially leading to preeclampsia.

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Authors and Affiliations

  1. Department of Obstetrics and Gynecology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China

    Xi Chen  (陈 茜), Yanyan Liu  (刘燕燕), Xiaoyan Xu  (徐晓燕) & Hanping Chen  (陈汉平)

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  1. Xi Chen  (陈 茜)
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  2. Yanyan Liu  (刘燕燕)
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  3. Xiaoyan Xu  (徐晓燕)
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  4. Hanping Chen  (陈汉平)
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Correspondence to Hanping Chen  (陈汉平).

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Chen, X., Liu, Y., Xu, X. et al. Decreased Cyr61 under hypoxia induces extravillous trophoblasts apoptosis and preeclampsia. J. Huazhong Univ. Sci. Technol. [Med. Sci.] 31, 235–240 (2011). https://doi.org/10.1007/s11596-011-0259-9

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  • DOI: https://doi.org/10.1007/s11596-011-0259-9

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