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Published on: March 27, 2020
LINC00673-V4 Promotes Colorectal Cancer Cell Proliferation by Interacting With FUS and Restoring the Expression of
Wei Lu1,2,3, Jiamin Zhong4, Yunxiang Zhou5
1Department of Colorectal Surgery and Oncology, Key Laboratory of Cancer Prevention and Intervention, Ministry of Education, The Second Affiliated Hospital, Zhejiang University School of Medicine, 310009 Hangzhou, Zhejiang, China.
The long non-coding RNA LINC00673-V4 promotes colorectal cancer (CRC) growth by interacting with FUS, inhibiting the Hippo-YAP pathway. This finding identifies LINC00673-V4 as a potential therapeutic target for CRC.
Area of Science:
- Molecular Biology
- Oncology
- Genetics
Background:
- Colorectal cancer (CRC) necessitates understanding molecular drivers for novel therapies.
- Long non-coding RNAs (lncRNAs) exhibit isoform-specific roles in cancer.
- The specific role of LINC00673-V4 in CRC remains largely unexplored.
Purpose of the Study:
- Investigate the role of LINC00673-V4 in driving CRC proliferation.
- Elucidate the mechanism by which LINC00673-V4 modulates the Hippo-Yes-associated protein (Hippo-YAP) signaling pathway.
Main Methods:
- Survival analysis of LINC00673 in CRC patients (GSE39582 dataset).
- Quantitative PCR to detect lncRNA variants expression.
- Cell proliferation assays (CCK-8, EdU) upon LINC00673-V4 modulation.
- Western blotting and immunofluorescence for Hippo-YAP target genes.
- RNA immunoprecipitation (RIP) and co-immunoprecipitation (co-IP) to confirm interactions.
Main Results:
- High LINC00673 expression correlates with poor CRC prognosis.
- LINC00673-V4 significantly promotes CRC cell proliferation.
- LINC00673-V4 inhibits YAP phosphorylation, promotes nuclear translocation, and upregulates Hippo-YAP target genes.
- LINC00673-V4 interacts with FUS, which modulates the LATS1/YAP complex.
Conclusions:
- LINC00673-V4 is an isoform-specific oncogenic lncRNA in CRC.
- LINC00673-V4 sequesters FUS from the LATS1/YAP complex, enhancing target gene expression.
- LINC00673-V4 represents a potential prognostic biomarker and therapeutic target for CRC.
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