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Depletion of Specific Cell Populations by Complement Depletion
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Multiple genetic mutations caused by NKX6.3 depletion contribute to gastric tumorigenesis

Jung Hwan Yoon1, Olga Kim1, Jung Woo Eun1,2

  • 1Department of Pathology, College of Medicine, The Catholic University of Korea, 222 Banpo-daero, Seocho-gu, Seoul, 06591, South Korea.

Scientific Reports
|December 6, 2018
PubMed

Insights

NKX6.3 depletion in gastric cells activates AICDA/APOBEC enzymes, causing mutations and promoting gastric cancer development. This study reveals NKX6.3

Area of Science:

  • Genetics
  • Molecular Biology
  • Cancer Research

Background:

  • NKX family proteins regulate cell fate during development.
  • The role of NKX6.3 in gastric carcinogenesis is not well understood.

Purpose of the Study:

  • To investigate the role of NKX6.3 depletion in gastric mutagenesis and cancer.
  • To analyze the effects on genetic alterations and gene expression.

Main Methods:

  • Studied human gastric epithelial cells with NKX6.3 depletion.
  • Utilized xenograft mouse models.
  • Analyzed gene expression and mutation accumulation.
  • Examined tumor-associated genes like p53 and E-cadherin.

Main Results:

  • NKX6.3 depletion caused significant genetic mutations, including point mutations.
  • NKX6.3 acts as a transcription factor, downregulating AICDA/APOBEC, NFκB, and CBFβ.
  • Depletion led to tumor formation and mutations in tumor-suppressor genes in mice.
  • NKX6.3 and target gene expression correlated with gastric cancer progression.

Conclusions:

  • NKX6.3 depletion activates AICDA/APOBEC, increasing genetic mutations.
  • This process drives the development of gastric cancer.

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