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Author Spotlight: Establishing a Murine Non-Small Cell Lung Cancer Model for Developing Nanoformulations of Anticancer Drugs
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Long noncoding RNA LINC-PINT inhibits non-small cell lung cancer progression through sponging miR-218-5p/PDCD4

Libin Zhang1, Jing Hu2, Jiagui Li1

  • 1a Department of Thoracic Surgery , First People's Hospital of Yunnan Province , Kunming , China.

Artificial Cells, Nanomedicine, and Biotechnology
|April 24, 2019
PubMed

Insights

Long noncoding RNA p53-induced transcript (LINC-PINT) suppresses non-small cell lung cancer (NSCLC) progression. LINC-PINT inhibits NSCLC cell proliferation, migration, and invasion by regulating the miR-208a-3p/PDCD4 axis.

Area of Science:

  • Molecular Biology
  • Oncology
  • Genetics

Background:

  • Long noncoding RNAs (lncRNAs) are implicated in cancer development.
  • The specific role of long intergenic non-protein-coding RNA p53-induced transcript (LINC-PINT) in non-small cell lung cancer (NSCLC) is not well understood.

Purpose of the Study:

  • To investigate the biological function and underlying mechanism of LINC-PINT in NSCLC.
  • To determine if LINC-PINT acts as a tumor suppressor or oncogene in NSCLC.

Main Methods:

  • Quantitative real-time polymerase chain reaction (qRT-PCR) for LINC-PINT expression analysis.
  • In vitro assays (CCK-8, flow cytometry, migration, invasion) to assess NSCLC cell behavior.
  • Luciferase reporter and RNA immunoprecipitation assays to identify LINC-PINT targets.
  • In vivo tumor xenograft models to evaluate LINC-PINT's effect on tumorigenesis.

Main Results:

  • LINC-PINT expression was significantly upregulated in NSCLC tissues and cell lines.
  • Overexpression of LINC-PINT inhibited NSCLC cell proliferation, cell cycle progression, migration, and invasion in vitro.
  • LINC-PINT was found to sponge miR-208a-3p, leading to the inhibition of programmed cell death 4 (PDCD4) expression.

Conclusions:

  • LINC-PINT functions as a tumor suppressor in NSCLC.
  • LINC-PINT inhibits NSCLC progression by modulating the miR-208a-3p/PDCD4 pathway.
  • LINC-PINT represents a potential therapeutic target for NSCLC treatment.
Keywords:
LINC-PINTNon-small cell lung cancerPDCD4miR-208a-3p

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