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- W3108266156 abstract "Luman has been reported to be involved in the formation of COP II-mediated transport vesicles that affect protein transportation and secretion. Western blotting, immunohistochemistry, immunofluorescence, and RT-qPCR indicated that Luman is widely expressed in the male mouse reproductive system. In sperm, Luman was mainly located in the sperm tail, and the expression level increased with sperm maturity. In the testis, Luman was located in Leydig cells. In MLTC-1, a high-concentration hCG treatment significantly increased GRP78, ATF6, p-IRE1, and p-EIF2S1 expression but had no effect on Luman expression. To investigate the role of Luman in hCG-induced ER stress (ERS), experiments were conducted to examine the consequences of short hairpin RNA (shRNA)-mediated Luman knockdown in MLTC-1 cells. Luman knockdown decreased the percentage of S phase cells and up-regulated Cyclin A1, Cyclin B1, and Cyclin D2 expression. ELISA and WB results showed that with Luman knockdown, Cyp11a1, p-IRE1, and p-EIF2S1 expression and testosterone secretion were significantly increased, while GRP78 and CHOP expression were decreased. Flow cytometry results showed that Luman knockdown reduced MLTC-1 cell apoptosis. RT-qPCR and WB results showed that Luman knockdown significantly up-regulated BCL-2 expression and decreased Caspase-3 and BAX expression. These data suggest that Luman is widely expressed in the male mouse reproductive system. In MLTC-1 cells, Luman knockdown up-regulated p-IRE1, p-EIF2S1, and BCL-2 expression and decreased GRP78, CHOP, BAX, and Caspase-3 expression. We propose that Luman knockdown reduces cell apoptosis through the ERS pathway, thereby promoting cell survival and testosterone secretion. These findings provide new insights into the role of Luman in hCG-induced ERS." @default.
- W3108266156 created "2020-12-07" @default.
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- W3108266156 date "2021-02-01" @default.
- W3108266156 modified "2023-10-12" @default.
- W3108266156 title "Luman/CREB3 knock-down inhibit hCG induced MLTC-1 apoptosis" @default.
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- W3108266156 doi "https://doi.org/10.1016/j.theriogenology.2020.11.010" @default.
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