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IGF2BP2-regulated alternative splicing of NFIC causes excessive granulosa cell proliferation in PCOS [IRIP-seq]

ABSTRACT: The expression of IGF2BP2 in GCs from PCOS patients was detected using RT-qPCR and western blot. We captured IGF2BP2-interacting transcripts, global transcriptome together with alternative splicing by RNA immunoprecipitation sequencing (RIP-seq) and RNA sequencing (RNA-seq). KGN cells transfected with IGF2BP2 overexpressing plasmids and nuclear factor 1 C-type (NFIC) siRNAs, were applied to CCK-8, EdU and TUNEL assays. IGF2BP2 was highly expressed in GCs from PCOS patients. As a RBP, it preferentially bound to the 3’and 5’UTRs of mRNAs with GGAC motif and a newly found GAAG motif. The overexpression of IGF2BP2 changed the transcriptome profile of KGN cells. IGF2BP2 functioned to regulate alternative splicing events (ASEs) and promote cell proliferation through inhibiting exon skipping events of NFIC. In conclusion, we demonstrated that IGF2BP2 promotes granulosa cell proliferation via regulating alternative splicing of NFIC in PCOS. The findings help to better understand the roles of IGF2BP2 in the pathogenesis of PCOS.

ORGANISM(S): Homo sapiens

PROVIDER: GSE191023 | GEO | 2022/05/11

REPOSITORIES: GEO

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IGF2BP2-regulated alternative splicing of NFIC causes excessive granulosa cell proliferation in PCOS [RNA-seq]

Project description:The expression of IGF2BP2 in GCs from PCOS patients was detected using RT-qPCR and western blot. We captured IGF2BP2-interacting transcripts, global transcriptome together with alternative splicing by RNA immunoprecipitation sequencing (RIP-seq) and RNA sequencing (RNA-seq). KGN cells transfected with IGF2BP2 overexpressing plasmids and nuclear factor 1 C-type (NFIC) siRNAs, were applied to CCK-8, EdU and TUNEL assays. IGF2BP2 was highly expressed in GCs from PCOS patients. As a RBP, it preferentially bound to the 3’and 5’UTRs of mRNAs with GGAC motif and a newly found GAAG motif. The overexpression of IGF2BP2 changed the transcriptome profile of KGN cells. IGF2BP2 functioned to regulate alternative splicing events (ASEs) and promote cell proliferation through inhibiting exon skipping events of NFIC. In conclusion, we demonstrated that IGF2BP2 promotes granulosa cell proliferation via regulating alternative splicing of NFIC in PCOS. The findings help to better understand the roles of IGF2BP2 in the pathogenesis of PCOS.

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