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MEIS1 knockdown may promote differentiation of esophageal squamous carcinoma cell line KYSE-30

Reihaneh Alsadat Mahmoudian1, Bahareh Bahadori2, Abolfazl Rad3

  • 1Immunology Research Center, Mashhad University of Medical Sciences, Mashhad, Iran.

Molecular Genetics & Genomic Medicine
|May 16, 2019
PubMed
Abstract

Insights

Myeloid ecotropic viral integration site 1 (MEIS1) gene silencing in esophageal squamous cell carcinoma (ESC) KYSE-30 cells promoted cell differentiation. MEIS1 knockdown decreased epithelial-mesenchymal transition (EMT) markers, suggesting a role in ESC differentiation.

Area of Science:

  • Oncology
  • Molecular Biology
  • Cell Biology

Background:

  • MEIS1 (Myeloid ecotropic viral integration site 1) is a HOX transcription factor with a dual role in cancer.
  • Its precise molecular mechanisms in differentiation, stem cell function, and tumorigenesis remain unclear.
  • This study investigates MEIS1's role in regulating cell differentiation in esophageal squamous cell carcinoma (ESC).

Purpose of the Study:

  • To elucidate the functional correlation between MEIS1 and genes involved in cell differentiation.
  • To understand MEIS1's role as a regulator of differentiation in the human ESC cell line KYSE-30.

Main Methods:

  • Knockdown of MEIS1 gene expression in KYSE-30 cells using shRNA delivered via retroviral transduction.
  • Quantification of mRNA expression levels of MEIS1, TWIST1, EGF, CDX2, and KRT4 using real-time PCR.

Main Results:

  • MEIS1 underexpression was achieved (approx. 5.5-fold decrease).
  • MEIS1 knockdown significantly decreased mRNA expression of EGF (-8-fold) and TWIST1 (-12-fold).
  • MEIS1 silencing significantly increased mRNA expression of differentiation markers KRT4 (34-fold) and CDX2 (1.14-fold).

Conclusions:

  • MEIS1 gene silencing in KYSE-30 cells enhances differentiation.
  • Silencing MEIS1 increases epithelial marker expression and decreases the epithelial-mesenchymal transition (EMT) marker TWIST1.
  • These findings suggest MEIS1 plays a role in regulating differentiation and EMT in ESCs.
Keywords:
MEIS1TWIST1ESCCKYSE-30differentiation

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