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Long non-coding RNA LINC00511 facilitates colon cancer development through regulating microRNA-625-5p to target WEE1

Xiaowu Qian1, Chun Jiang2, Zhengtai Zhu3

  • 1Department of Geriatrics, Taizhou People's Hospital (Taizhou People's Hospital affiliated to Nanjing Medical University), 225300, Taizhou, Jiangsu, China. Qianxiaowu89898@163.com.

Cell Death Discovery
|April 28, 2022
PubMed

Insights

Down-regulating long non-coding RNA LINC00511 inhibits colon cancer progression by targeting microRNA miR-625-5p and WEE1. This finding offers a potential therapeutic strategy for colon cancer.

Area of Science:

  • Oncology
  • Molecular Biology
  • Genetics

Background:

  • Long non-coding RNA LINC00511 is implicated in various cancers.
  • The specific role and mechanism of LINC00511 in colon cancer (CC) remain underexplored.
  • Understanding novel molecular pathways is crucial for developing targeted therapies.

Purpose of the Study:

  • To investigate the mechanism of LINC00511 in colon cancer development.
  • To elucidate the role of the LINC00511-mediated microRNA (miR)-625-5p/WEE1 axis in colon cancer.
  • To provide a basis for colon cancer-oriented therapy.

Main Methods:

  • Quantification of LINC00511, miR-625-5p, and WEE1 levels in colon cancer tissues and cells.
  • Determination of LINC00511 subcellular localization.
  • In vitro transfection experiments to modulate LINC00511 and miR-625-5p expression.
  • In vivo tumorigenicity assays using xenografted tumors.

Main Results:

  • LINC00511 and WEE1 were upregulated, while miR-625-5p was downregulated in colon cancer tissues and cells.
  • LINC00511 was primarily localized in the cytoplasm.
  • Reduced LINC00511 or restored miR-625-5p expression inhibited colon cancer cell growth.
  • LINC00511 acts as a molecular sponge for miR-625-5p, thereby targeting WEE1.
  • Modulation of the LINC00511/miR-625-5p/WEE1 axis significantly affected colon cancer cell biological functions.

Conclusions:

  • Downregulation of LINC00511 inhibits colon cancer tumorigenesis.
  • The mechanism involves the restoration of miR-625-5p and subsequent silencing of WEE1.
  • This pathway presents a potential therapeutic target for colon cancer treatment.

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