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Interferon-α2b gene-modified human bone marrow mesenchymal stem cells inhibit hepatocellular carcinoma by reducing

Yanjun Su1, Ruochuan Cheng1, Jianming Zhang1

  • 1Department of general surgery, The First Affiliated Hospital of Kunming Medical University, Kunming, Yunnan 650032, China.

Life Sciences
|November 1, 2015
PubMed
Abstract

Insights

Genetically engineered mesenchymal stem cells secreting interferon-alpha2b effectively inhibited hepatocellular carcinoma growth. This novel approach targets Notch signaling, offering a promising new therapy for liver cancer.

Area of Science:

  • Oncology
  • Stem Cell Biology
  • Gene Therapy

Background:

  • Hepatocellular carcinoma (HCC) is a prevalent global cancer.
  • Interferon-alpha (IFN-α) shows therapeutic potential for HCC but has limitations like short half-life and side effects.
  • Novel delivery systems are needed to improve IFN-α efficacy and safety.

Purpose of the Study:

  • To evaluate the anti-tumor effect of a novel gene delivery system using interferon-alpha2b (IFN-α2b) gene-modified human bone marrow mesenchymal stem cells (BMSCs) in HCC.
  • To investigate the mechanism of action, specifically the regulation of Notch signaling.

Main Methods:

  • IFN-α2b expression in modified BMSCs (BMSC/IFN-α2b) was confirmed.
  • In vitro studies used HCC cell lines (HepG2, Huh7) treated with conditioned media (CM) from BMSC/IFN-α2b.
  • Cell cycle analysis was performed using flow cytometry.
  • In vivo studies utilized a xenografted NOD/SCID mouse model inoculated with HepG2 cells.

Main Results:

  • BMSC/IFN-α2b demonstrated stable IFN-α2b expression.
  • BMSC/IFN-α2b-CM significantly inhibited HCC cell proliferation and increased the G2/M phase population.
  • Tumor growth was significantly inhibited in the BMSC/IFN-α2b treated mouse model.
  • Notch signaling molecules were downregulated by BMSC/IFN-α2b-CM both in vitro and in vivo.

Conclusions:

  • IFN-α2b-modified BMSCs effectively inhibit HCC growth.
  • The anti-tumor effect is mediated by the negative regulation of Notch signaling.
  • This approach presents a potential therapeutic strategy for hepatomas.
Keywords:
Bone marrow mesenchymal stem cellsHepatomaIFN-α2bNotch signaling pathway

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