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Exploring Caspase Mutations and Post-Translational Modification by Molecular Modeling Approaches
05:56

Exploring Caspase Mutations and Post-Translational Modification by Molecular Modeling Approaches

Published on: October 13, 2022

Mutational analysis of proapoptotic caspase-9 gene in common human carcinomas

Young Hwa Soung1, Jong Woo Lee, Su Young Kim

  • 1Department of Pathology, College of Medicine, Catholic University of Korea, Seoul, Korea.

APMIS : Acta Pathologica, Microbiologica, Et Immunologica Scandinavica
|May 13, 2006
PubMed

Insights

Genetic alterations in caspase-9 (a key apoptosis regulator) are rarely found in gastric, colorectal, and lung cancers. This suggests caspase-9 mutations do not significantly contribute to the development of these common cancers.

Area of Science:

  • Oncology
  • Molecular Biology
  • Genetics

Background:

  • Deregulation of apoptosis is a hallmark of cancer development.
  • Caspase-9 is a critical initiator of the intrinsic apoptosis pathway.

Purpose of the Study:

  • To investigate the role of genetic alterations in the human caspase-9 gene in the pathogenesis of gastric, colorectal, and lung adenocarcinomas.
  • To determine if somatic mutations in caspase-9 contribute to the development of these specific cancer types.

Main Methods:

  • Analysis of the entire coding region and splice sites of the human caspase-9 gene.
  • Detection of somatic mutations in a cohort of 353 cancer samples (180 gastric, 104 colorectal, 69 lung adenocarcinomas).

Main Results:

  • Three somatic mutations in the caspase-9 gene were identified across the studied cancer types.
  • All detected mutations were silent, meaning they do not alter the amino acid sequence of the protein.
  • Mutations were found in 2/104 colorectal carcinomas and 1/180 gastric carcinomas.

Conclusions:

  • The caspase-9 gene is infrequently mutated in gastric, colorectal, and lung adenocarcinomas.
  • Caspase-9 gene mutations are unlikely to be a major driving factor in the pathogenesis of these cancers.

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