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Linc-pint inhibits early stage pancreatic ductal adenocarcinoma growth through TGF-β pathway activation

Huimin Lu1, Dujiang Yang1, Ling Zhang1

  • 1Department of Pancreatic Surgery, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, P.R. China.

Oncology Letters
|April 5, 2019
PubMed

Insights

Long intergenic non-protein coding RNA (Linc-pint) shows potential as a biomarker for early pancreatic ductal adenocarcinoma (PDAC). Lower Linc-pint levels in patients suggest a role in PDAC development via TGF-β pathway activation.

Area of Science:

  • Oncology
  • Molecular Biology
  • Biochemistry

Background:

  • Long intergenic non-protein coding RNA (Linc-pint) exhibits antitumor properties in various cancers.
  • The specific role of Linc-pint in pancreatic ductal adenocarcinoma (PDAC) requires further investigation.

Purpose of the Study:

  • To investigate the role and clinical significance of Linc-pint in pancreatic ductal adenocarcinoma (PDAC).
  • To explore the relationship between Linc-pint, TGF-β1, and PDAC cell proliferation.

Main Methods:

  • Analysis of Linc-pint and TGF-β1 plasma levels using RT-qPCR, Western blotting, and ELISA.
  • Assessment of PDAC cell proliferation in vitro.
  • Investigation of gene expression changes in response to Linc-pint and TGF-β1 manipulation.

Main Results:

  • Significantly lower Linc-pint plasma levels were observed in early-stage PDAC patients compared to healthy controls.
  • Linc-pint plasma levels positively correlated with TGF-β1 levels in PDAC patients.
  • Linc-pint overexpression upregulated TGF-β1 and inhibited PDAC cell proliferation, an effect partially reversed by TGF-β inhibition.

Conclusions:

  • Linc-pint may serve as a potential diagnostic biomarker for early-stage PDAC.
  • Linc-pint likely inhibits early PDAC growth by activating the TGF-β signaling pathway.
Keywords:
Linc-pintcell proliferationpancreatic ductal adenocarcinomatransforming growth factor β1

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