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Updated: May 20, 2026

Isolation and Culture of Primary Oral Keratinocytes from the Adult Mouse Palate
06:28

Isolation and Culture of Primary Oral Keratinocytes from the Adult Mouse Palate

Published on: September 24, 2021

MAGEA4 induces growth in normal oral keratinocytes by inhibiting growth arrest and apoptosis

Sheetal Bhan1, Alice Chuang, Sandeep S Negi

  • 1Department of Otolaryngology-Head and Neck Surgery, Johns Hopkins Medical Institutions, Baltimore, MD 21231, USA.

Oncology Reports
|July 31, 2012
PubMed

Insights

Cancer testis antigens (CTAs), like MAGEA4, promote cancer growth by preventing cell cycle arrest and inhibiting apoptosis. This study reveals MAGEA4

Area of Science:

  • Oncology
  • Molecular Biology
  • Cancer Immunotherapy

Background:

  • Cancer testis antigens (CTAs) are aberrantly expressed in various cancers.
  • MAGEA proteins, a subset of CTAs, are investigated for their roles in cancer.
  • The precise functions of CTAs, including MAGEA4, remain largely undefined.

Purpose of the Study:

  • To investigate the role of MAGEA4 in promoting cancer cell growth.
  • To elucidate the molecular mechanisms by which MAGEA4 influences cell cycle and apoptosis.

Main Methods:

  • Overexpression of MAGEA4 in normal oral keratinocytes (NOK-SI).
  • Analysis of cell cycle progression.
  • Assessment of apoptosis induction (G418-induced).
  • Quantification of p53 downstream gene expression (BAX, CDKN1A).

Main Results:

  • MAGEA4 overexpression promotes the growth of NOK-SI cells.
  • MAGEA4 inhibits G1 phase cell cycle arrest.
  • MAGEA4 suppresses G418-induced apoptosis in NOK-SI cells.
  • Apoptosis inhibition correlates with repression of BAX and CDKN1A.

Conclusions:

  • MAGEA4 promotes cancer cell proliferation by interfering with cell cycle regulation.
  • MAGEA4 exhibits anti-apoptotic functions, potentially through the p53 pathway.
  • Understanding MAGEA4's role provides insights for cancer immunotherapy strategies targeting CTAs.

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