The aberrant upregulation of exon 10-inclusive SREK1 through SRSF10 acts as an oncogenic driver in human hepatocellular carcinoma
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ABSTRACT:
PROVIDER: PRJNA754481 | ENA |
REPOSITORIES: ENA
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Project description:The deregulation of alternative splicing (AS) has recently been implicated as a relevant source of molecular heterogeneity in cancer. However, the targets and intrinsic mechanisms on regulatory network of splicing in hepatocarcinogenesis are largely unknown. Here, we report a functional impact of the splice variant of Splicing Regulatory Glutamic Acid and Lysine Rich Protein 1 (SREK1) and its upstream regulator, Serine/arginine-rich splicing factor 10 (SRSF10) on sustaining the oncogenic signal.
2022-05-20 | PXD030800 | Pride
Project description:The deregulation of alternative splicing (AS) has recently been implicated as a relevant source of molecular heterogeneity in cancer. However, the targets and intrinsic mechanisms on regulatory network of splicing in hepatocarcinogenesis are largely unknown. Here, we report a functional impact of the splice variant of Splicing Regulatory Glutamic Acid and Lysine Rich Protein 1 (SREK1) and its upstream regulator, Serine/arginine-rich splicing factor 10 (SRSF10) on sustaining the oncogenic signal.
2021-12-30 | GSE182102 | GEO
Project description:Deregulation of alternative splicing is implicated as a relevant source of molecular heterogeneity in cancer. However, the targets and intrinsic mechanisms of splicing in hepatocarcinogenesis are largely unknown. Here, we report a functional impact of a Splicing Regulatory Glutamine/Lysine-Rich Protein 1 (SREK1) variant and its regulator, Serine/arginine-rich splicing factor 10 (SRSF10). HCC patients with poor prognosis express higher levels of exon 10-inclusive SREK1 (SREK1L). SREK1L can sustain BLOC1S5-TXNDC5 (B-T) expression, a targeted gene of nonsense-mediated mRNA decay through inhibiting exon-exon junction complex binding with B-T to exert its oncogenic role. B-T plays its competing endogenous RNA role by inhibiting miR-30c-5p and miR-30e-5p, and further promoting the expression of downstream oncogenic targets SRSF10 and TXNDC5. Interestingly, SRSF10 can act as a splicing regulator for SREK1L to promote hepatocarcinogenesis via the formation of a SRSF10-associated complex. In summary, we demonstrate a SRSF10/SREK1L/B-T signalling loop to accelerate the hepatocarcinogenesis.
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Project description:During adipocyte differentiation, significant alternative splicing changes occur in association with the adipogenic process. However, little is known about roles played by splicing factors in this process. We observed that mice deficient for the splicing factor SRSF10 exhibit severely impaired development of subcutaneous white adipose tissue as a result of defects in adipogenic differentiation. To identify splicing events responsible for this, RNA-seq analysis was performed using embryonic fibroblast cells. Several SRSF10-affected splicing events that are implicated in adipogenesis have been identified. Skipping of lipin1 exon 7 is controlled by SRSF10-regulated cis-element located in the constitutive exon 8. The activity of this element depends on the binding of SRSF10 and correlates with the relative abundance of lipin1a mRNA. A series of experiments demonstrated that SRSF10 controls the production of lipin1a and thus promotes adipocyte differentiation. Indeed, lipin1a expression could rescue SRSF10-mediated adipogenic defects. Taken together, our results identify SRSF10 as an essential regulator for adipocyte differentiation and also provide new insights into splicing control by SRSF10 in lipin1 pre-mRNA splicing. RNA-seq for wide type (WT) and SRSF10-deficient (KO) mouse MEF cells
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Project description:During adipocyte differentiation, significant alternative splicing changes occur in association with the adipogenic process. However, little is known about roles played by splicing factors in this process. We observed that mice deficient for the splicing factor SRSF10 exhibit severely impaired development of subcutaneous white adipose tissue as a result of defects in adipogenic differentiation. To identify splicing events responsible for this, RNA-seq analysis was performed using embryonic fibroblast cells. Several SRSF10-affected splicing events that are implicated in adipogenesis have been identified. Skipping of lipin1 exon 7 is controlled by SRSF10-regulated cis-element located in the constitutive exon 8. The activity of this element depends on the binding of SRSF10 and correlates with the relative abundance of lipin1a mRNA. A series of experiments demonstrated that SRSF10 controls the production of lipin1a and thus promotes adipocyte differentiation. Indeed, lipin1a expression could rescue SRSF10-mediated adipogenic defects. Taken together, our results identify SRSF10 as an essential regulator for adipocyte differentiation and also provide new insights into splicing control by SRSF10 in lipin1 pre-mRNA splicing.
2014-05-12 | GSE54226 | GEO
Project description:Splicing factor SRSF10 is known to function as a sequence-specific splicing activator. Here, we used RNA-seq coupled with bioinformatics analysis to identify the extensive splicing network regulated by SRSF10 in chicken cells. We found that SRSF10 promoted both exon inclusion and exclusion. Functionally, many of SRSF10-verified alternative exons are linked to pathways of stress and apoptosis. Importantly, reconstituted SRSF10 in knockout cells recovered wild-type splicing patterns and considerably rescued the stress-related defects. Together, our results provide mechanistic insight into SRSF10-regulated alternative splicing events in vivo and demonstrate that SRSF10 plays a crucial role in cell survival under stress conditions. RNA-seq for wide type (WT) and SRSF10-deficient (KO) chicken DT40 cells
2014-01-22 | E-GEOD-53354 | biostudies-arrayexpress
Project description:Splicing factor SRSF10 is known to function as a sequence-specific splicing activator. Here, we used RNA-seq coupled with bioinformatics analysis to identify the extensive splicing network regulated by SRSF10 in chicken cells. We found that SRSF10 promoted both exon inclusion and exclusion. Functionally, many of SRSF10-verified alternative exons are linked to pathways of stress and apoptosis. Importantly, reconstituted SRSF10 in knockout cells recovered wild-type splicing patterns and considerably rescued the stress-related defects. Together, our results provide mechanistic insight into SRSF10-regulated alternative splicing events in vivo and demonstrate that SRSF10 plays a crucial role in cell survival under stress conditions.
2014-01-22 | GSE53354 | GEO
Project description:We generated the SRSF10 -/- mice, and collected their embryonic heart at 13.5 and controls. Then, we extracted RNAs of embryonic heart and performed next generation sequencing. By comparing sequcing data from WT and SRSF10 -/- samples, we profiled the alternative splicing events and gene expression regulated by SRSF10 during mouse heart development process. E13.5 embryonic heart mRNA profiles of wild type (WT) and SRSF10-/- mice were generated by deep sequencing, using Illumina HiSeq2000.
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Project description:Aberrant RNA splicing events produce transcripts to facilitate ESCC progression, yet how this splicing process is abnomally regulated remains elusive. Here, we unveil a alternative splicing axis of BOLA3 transcripts and its regulator HNRNPC in ESCC.The long isoform of BOLA3 (-L) with exon3 is highly expressed in ESCC and associated with poor prognosis. Functional assays demonstrate the pro-tumorigenic function of BOLA3-L in ESCC cells. HNRNPC binds to BOLA3-L pre-mRNA and promotes exon3 inclusion forming BOLA3-L. HNRNPC knockdown suppresses the tumorigenesis of ESCC cells, phenocopying BOLA3-L knockdown, which is significantly rescued by BOLA3-L overexpression. High expression of HNRNPC is correlated with the exon-3 inclusion of BOLA3 in ESCC and associated with poor prognosis. BOLA3-L maintains mitochondrial structural and functional stability, exerting pro-oncogenic effects through the WNT/β-catenin pathway. E2F7 acts as a key transcription factor to regulate the transcriptional upregulation of HNRNPC and promotes the inclusion of BOLA3 exon3.Taken together, our findings provide insights into how alternative splicing contributes to ESCC progression, by investgating a HNRNPC-BOLA3 splicing axis.
2024-01-01 | GSE235537 | GEO
Project description:Aberrant RNA splicing events produce transcripts to facilitate ESCC progression, yet how this splicing process is abnomally regulated remains elusive. Here, we unveil a alternative splicing axis of BOLA3 transcripts and its regulator HNRNPC in ESCC.The long isoform of BOLA3 (-L) with exon3 is highly expressed in ESCC and associated with poor prognosis. Functional assays demonstrate the pro-tumorigenic function of BOLA3-L in ESCC cells. HNRNPC binds to BOLA3-L pre-mRNA and promotes exon3 inclusion forming BOLA3-L. HNRNPC knockdown suppresses the tumorigenesis of ESCC cells, phenocopying BOLA3-L knockdown, which is significantly rescued by BOLA3-L overexpression. High expression of HNRNPC is correlated with the exon-3 inclusion of BOLA3 in ESCC and associated with poor prognosis. BOLA3-L maintains mitochondrial structural and functional stability, exerting pro-oncogenic effects through the WNT/β-catenin pathway. E2F7 acts as a key transcription factor to regulate the transcriptional upregulation of HNRNPC and promotes the inclusion of BOLA3 exon3.Taken together, our findings provide insights into how alternative splicing contributes to ESCC progression, by investgating a HNRNPC-BOLA3 splicing axis.
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