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HOTAIR/miR-1277-5p/FBN2 signaling axis is involved in recurrent spontaneous abortion by regulating the growth, migration, and invasion of HTR-8/SVneo cells.
Biology of Reproduction 2024 Februrary 25
OBJECTIVE: This study aimed to explore the specific pathways by which HOX transcript antisense intergenic RNA (HOTAIR) contributes to the pathogenesis of unexplained recurrent spontaneous abortion (URSA).
METHODS: Real-time quantitative PCR (RT-qPCR) was employed to assess the differential expression levels of HOTAIR in chorionic villi tissues from URSA patients and women with voluntarily terminated pregnancies. HTR-8/SVneo served as a cellular model. Knockdown and overexpression of HOTAIR in the cells were achieved through siRNA transfection and pcDNA3.1 transfection, respectively. Cell viability, migration, and invasion were evaluated using cell counting kit-8 (CCK-8), scratch, and Transwell assays, respectively. The interaction among the HOTAIR/miR-1277-5p/fibrillin 2 (FBN2) axis was predicted through bioinformatics analysis and confirmed through in vitro experiments. Furthermore, the regulatory effects of the HOTAIR/miR-1277-5p/FBN2 signaling axis on cellular behaviors were validated in HTR-8/SVneo cells.
RESULTS: We found that HOTAIR was downregulated in chorionic villi tissues from URSA patients. Overexpression of HOTAIR significantly enhanced the viability, migration, and invasion of HTR-8/SVneo cells, while knockdown of HOTAIR had the opposite effects. We further confirmed the regulatory effect of the HOTAIR/miR-1277-5p/FBN2 signaling axis in URSA. Specifically, HOTAIR and FBN2 were found to reduce the risk of URSA by enhancing cell viability, migration, and invasion, whereas miR-1277-5p exerted the opposite effects.
CONCLUSION: HOTAIR promotes URSA development by targeting inhibition of miR-1277-5p/FBN2 axis.
METHODS: Real-time quantitative PCR (RT-qPCR) was employed to assess the differential expression levels of HOTAIR in chorionic villi tissues from URSA patients and women with voluntarily terminated pregnancies. HTR-8/SVneo served as a cellular model. Knockdown and overexpression of HOTAIR in the cells were achieved through siRNA transfection and pcDNA3.1 transfection, respectively. Cell viability, migration, and invasion were evaluated using cell counting kit-8 (CCK-8), scratch, and Transwell assays, respectively. The interaction among the HOTAIR/miR-1277-5p/fibrillin 2 (FBN2) axis was predicted through bioinformatics analysis and confirmed through in vitro experiments. Furthermore, the regulatory effects of the HOTAIR/miR-1277-5p/FBN2 signaling axis on cellular behaviors were validated in HTR-8/SVneo cells.
RESULTS: We found that HOTAIR was downregulated in chorionic villi tissues from URSA patients. Overexpression of HOTAIR significantly enhanced the viability, migration, and invasion of HTR-8/SVneo cells, while knockdown of HOTAIR had the opposite effects. We further confirmed the regulatory effect of the HOTAIR/miR-1277-5p/FBN2 signaling axis in URSA. Specifically, HOTAIR and FBN2 were found to reduce the risk of URSA by enhancing cell viability, migration, and invasion, whereas miR-1277-5p exerted the opposite effects.
CONCLUSION: HOTAIR promotes URSA development by targeting inhibition of miR-1277-5p/FBN2 axis.
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