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A Robust Discovery Platform for the Identification of Novel Mediators of Melanoma Metastasis
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Long noncoding RNA CPS1-IT1 suppresses melanoma cell metastasis through inhibiting Cyr61 via competitively binding to

Xiaobo Zhou1, Yamin Rao2, Qilin Sun3

  • 1Department of Plastic and Reconstructive Surgery, Shanghai Ninth People's Hospital, Affiliated to Shanghai Jiaotong University School of Medicine, Center for Specialty Strategy Research of Shanghai JiaoTong University China Hospital Development Institute, Shanghai, China.

Journal of Cellular Physiology
|May 22, 2019
PubMed

Insights

Long noncoding RNA CPS1-IT1 acts as a tumor suppressor in melanoma. Its reduced expression correlates with metastasis and poor prognosis, suggesting it

Area of Science:

  • Oncology
  • Molecular Biology
  • Genetics

Background:

  • Long noncoding RNAs (lncRNAs) are increasingly recognized for their roles in cancer.
  • CPS1-IT1 has emerged as a potential tumor suppressor in various cancers.
  • The specific function of CPS1-IT1 in human melanoma remains largely unexplored.

Purpose of the Study:

  • To investigate the role of CPS1-IT1 in human melanoma.
  • To determine the association of CPS1-IT1 expression with clinical features and prognosis.
  • To elucidate the molecular mechanisms underlying CPS1-IT1's function in melanoma metastasis.

Main Methods:

  • Quantitative real-time PCR to assess CPS1-IT1 expression levels.
  • Analysis of the correlation between CPS1-IT1 expression and clinicopathological parameters.
  • Cellular assays including migration, invasion, and angiogenesis assays.
  • Western blotting to evaluate protein expression levels.
  • Chromatin immunoprecipitation assays to investigate protein-DNA interactions.

Main Results:

  • CPS1-IT1 expression is significantly downregulated in human melanoma tissues and cell lines.
  • Low CPS1-IT1 expression is associated with advanced tumor stage and metastasis.
  • CPS1-IT1 overexpression inhibits melanoma cell migration, invasion, epithelial-mesenchymal transition, and angiogenesis.
  • CPS1-IT1 suppresses melanoma metastasis by inhibiting the oncogene CYR61 expression via interaction with BRG1.
  • CPS1-IT1 acts as a potential prognostic biomarker for melanoma.

Conclusions:

  • CPS1-IT1 functions as a tumor suppressor in human melanoma.
  • CPS1-IT1 negatively regulates melanoma cell metastasis by targeting the CYR61/BRG1 axis.
  • CPS1-IT1 holds promise as a novel therapeutic target and prognostic biomarker for melanoma patients.
Keywords:
BRG1CPS1-IT1Cyr61melanomametastasis

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