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Colorectal liver metastases-specific lncRNA CRLM1 inhibits apoptosis and promotes metastasis through transcriptional regulation cooperated with hnRNPK [CRLM1_OE]

ABSTRACT: Colorectal liver metastases-specific lncRNA CRLM1 inhibits apoptosis and promotes metastasis through transcriptional regulation cooperated with hnRNPK [CRLM1_OE]

PROVIDER: PRJNA706356 | ENA |

REPOSITORIES: ENA

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Colorectal liver metastases-specific lncRNA CRLM1 inhibits apoptosis and promotes metastasis through transcriptional regulation cooperated with hnRNPK [CRLM1_CHIRP]

Project description:The survival rate of colorectal liver metastases remains low. Long noncoding lncRNAs is emerging as a novel class of master regulators of cell invasion and metastasis. In this study, analysis of the lncRNA expression dynamics in the colorectal liver metastases, primary colorectal tumor and normal tissues led to the identification of the metastasis-specific expression of a set of lncRNAs including CRLM1. CRLM1 inhibited apoptosis and promoted metastasis and invasion of colorectal cancer cells, and also promoted tumor growth in nude mice. CRLM1 weakly associated with chromatin regions of genes involved in cell adhesion and DNA damage, correlated with CRLM1-regulated gene expression bidirectionally. CRLM1 physically interacts with and promotes the nuclear localization of the metastasis protein hnRNPK. CRLM1 effectively promotes hnRNPK promoter occupancy, and co-regulate gene expression. These findings suggest a potential biomarker and druggable target for treatment of colorectal liver metastases.

2022-08-03 | GSE168144 | GEO

Colorectal liver metastases-specific lncRNA CRLM1 inhibits apoptosis and promotes metastasis through transcriptional regulation cooperated with hnRNPK [HNRNPK_OE]

2022-08-03 | GSE168147 | GEO

Colorectal liver metastases-specific lncRNA CRLM1 inhibits apoptosis and promotes metastasis through transcriptional regulation cooperated with hnRNPK [HNRNPK_CHIP]

2022-08-03 | GSE168146 | GEO

Colorectal liver metastases-specific lncRNA CRLM1 inhibits apoptosis and promotes metastasis through transcriptional regulation cooperated with hnRNPK [CRLM1_OE]

2022-08-03 | GSE168145 | GEO

Colorectal liver metastases-specific lncRNA CRLM1 inhibits apoptosis and promotes metastasis through transcriptional regulation cooperated with hnRNPK

Project description:Colorectal liver metastases-specific lncRNA CRLM1 inhibits apoptosis and promotes metastasis through transcriptional regulation cooperated with hnRNPK

| PRJNA706350 | ENA

Colorectal liver metastases-specific lncRNA CRLM1 inhibits apoptosis and promotes metastasis through transcriptional regulation cooperated with hnRNPK [HNRNPK_CHIP]

Project description:Colorectal liver metastases-specific lncRNA CRLM1 inhibits apoptosis and promotes metastasis through transcriptional regulation cooperated with hnRNPK [HNRNPK_CHIP]

| PRJNA706358 | ENA

Colorectal liver metastases-specific lncRNA CRLM1 inhibits apoptosis and promotes metastasis through transcriptional regulation cooperated with hnRNPK [CRLM1_CHIRP]

Project description:Colorectal liver metastases-specific lncRNA CRLM1 inhibits apoptosis and promotes metastasis through transcriptional regulation cooperated with hnRNPK [CRLM1_CHIRP]

| PRJNA706355 | ENA

Colorectal liver metastases-specific lncRNA CRLM1 inhibits apoptosis and promotes metastasis through transcriptional regulation cooperated with hnRNPK [HNRNPK_OE]

Project description:Colorectal liver metastases-specific lncRNA CRLM1 inhibits apoptosis and promotes metastasis through transcriptional regulation cooperated with hnRNPK [HNRNPK_OE]

| PRJNA706360 | ENA

Colorectal liver metastases-specific lncRNA CRLM1 inhibits apoptosis and promotes metastasis through transcriptional regulation cooperated with hnRNPK

Project description:This SuperSeries is composed of the SubSeries listed below.

2022-08-03 | GSE167224 | GEO

hnRNPK knock down in Ewing cell line

Project description:Ewing sarcoma is a highly aggressive tumor characterized by a translocation between members of the FET family of RNA binding proteins and one of several ETS transcription factors, with the most common translocation being EWS-FLI1. EWS-FLI1 leads to changes in gene expression through mechanisms that are not completely understood. We performed RNA sequencing analysis on primary pediatric human mesenchymal progenitor cells (pMPCs) expressing EWS-FLI1 in order to identify novel target genes. This analysis identified lnc277 as a previously uncharacterized long non-coding RNA upregulated by EWS-FLI1 in pMPCs. Inhibiting the expression of lnc277 diminished the ability of Ewing sarcoma cell lines to proliferate and form colonies in soft agar whereas inhibiting lnc277 had no effect on other cell types tested. By analyzing gene expression after shRNA knockdown, we found that both EWS-FLI1 and lnc277 repressed many more genes that they induced and that a significant fraction of EWS-FLI1 repressed targets were also repressed by lnc277. Analysis of primary human Ewing sarcoma RNA sequencing data further supports a role for lnc277 in mediating gene repression. We identified hnRNPK as an RNA binding protein that interacts directly with lnc277. We found a significant overlap in the genes repressed by hnRNPK and those repressed by both EWS-FLI1 and lnc277, suggesting that hnRNPK participates in lnc277 mediated gene repression. Thus, lnc277 is a previously uncharacterized long non-coding RNA downstream of EWS-FLI1 that facilitates the development of Ewing sarcoma via the repression of target genes. Our studies identify a novel mechanism of oncogenesis downstream of a chromosomal translocation and underscore the importance of lncRNA-mediated gene repression as a mechanism of EWS-FLI1 transcriptional regulation. A673 Ewing cells expressing an shRNA targeting hnRNPK or control were subjected to paired end RNA sequencing and compared to shGFP control.

2014-11-01 | E-GEOD-60890 | biostudies-arrayexpress

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