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Long Noncoding MAGI2-AS3 Suppresses Several Cellular Processes of Lung Squamous Cell Carcinoma Cells by Regulating

Jia He1,2, Xiaoyun Zhou1,2, Li Li1,2

  • 1Department of Thoracic Surgery, Peking Union Medical College Hospital, Beijing 100730, People's Republic of China.

Cancer Management and Research
|February 6, 2020
PubMed
Abstract

Insights

Long noncoding RNA MAGI2-AS3 inhibits lung squamous cell carcinoma (LUSC) progression by targeting the miR-374a/b-5p/CADM2 pathway. This finding suggests MAGI2-AS3 as a potential therapeutic marker for LUSC.

Area of Science:

  • Oncology
  • Molecular Biology
  • Gene Regulation

Background:

  • Lung squamous cell carcinoma (LUSC) is a major cause of cancer mortality.
  • Long noncoding RNAs (lncRNAs) are increasingly recognized for their roles in cancer development.

Purpose of the Study:

  • To investigate the function of MAGI2-AS3 in LUSC.
  • To elucidate the molecular mechanism of MAGI2-AS3 in LUSC progression.

Main Methods:

  • Gene expression analysis (RT-qPCR) for MAGI2-AS3, miR-374a/b-5p, and CADM2.
  • Cellular assays including proliferation (colony formation, EdU), migration, invasion (Transwell), and apoptosis (flow cytometry, Western blot).
  • Molecular assays (nuclear-cytoplasmic fractionation, FISH, luciferase reporter, RIP) to determine MAGI2-AS3 localization and interactions.

Main Results:

  • MAGI2-AS3 expression was upregulated and inhibited LUSC cell proliferation, migration, and invasion.
  • MAGI2-AS3 overexpression promoted apoptosis in LUSC cells.
  • MAGI2-AS3 acts as a sponge for miR-374a/b-5p, which targets CADM2, revealing the MAGI2-AS3/miR-374a/b-5p/CADM2 regulatory axis.

Conclusions:

  • lncRNA MAGI2-AS3 suppresses LUSC progression through the miR-374a/b-5p/CADM2 pathway.
  • MAGI2-AS3 holds potential as a therapeutic target or biomarker for LUSC.
Keywords:
CADM2LUSCMAGI2-AS3lung squamous cell carcinomamiR-374a/b-5p

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