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Caspase-14 is an anti-apoptotic protein targeting apoptosis-inducing factor in lung adenocarcinomas

Hsin-Yuan Fang1, Chih-Yi Chen, Min-Fa Hung

  • 1Graduate Institute of Clinical Medicine, National Taiwan University School of Medicine, Taipei, Taiwan, ROC.

Oncology Reports
|May 14, 2011
PubMed

Insights

Caspase-14 (casp-14) is highly expressed in lung adenocarcinomas (LADC) and promotes tumor growth and cisplatin resistance by targeting apoptosis-inducing factor. Silencing casp-14 reduces resistance, suggesting it as a therapeutic target.

Area of Science:

  • Molecular Biology
  • Oncology
  • Biochemistry

Background:

  • Apoptosis-inducing factor (AIF) plays a crucial role in programmed cell death.
  • Identifying novel protein interactions with AIF can reveal new insights into cellular processes.
  • Lung adenocarcinomas (LADC) are a significant cause of cancer mortality.

Purpose of the Study:

  • To investigate the expression and function of caspase-14 (casp-14) in lung adenocarcinomas (LADC).
  • To determine the role of casp-14 in tumor cell growth, metastatic potential, and chemoresistance in LADC.

Main Methods:

  • Yeast hybrid assay to identify proteins interacting with apoptosis-inducing factor (AIF).
  • Monoclonal antibody production and validation for casp-14 detection.
  • Immunohistochemical analysis of casp-14 expression in LADC tissues.
  • In vitro experiments involving casp-14 silencing and cisplatin treatment.

Main Results:

  • Caspase-14 (casp-14) was identified as an interacting protein of apoptosis-inducing factor (AIF).
  • High expression of casp-14 in LADC tissues, correlating with advanced tumor stage, poor differentiation, and lymphovascular invasion.
  • Casp-14 overexpression is associated with increased tumor cell growth and metastatic potential.
  • Silencing casp-14 expression in vitro significantly reduced cisplatin resistance in LADC cells.

Conclusions:

  • Caspase-14 (casp-14) acts as an anti-apoptotic protein in lung adenocarcinomas (LADC).
  • Casp-14 targets apoptosis-inducing factor (AIF) and contributes to cisplatin resistance in LADC.
  • Casp-14 is a potential therapeutic target for improving treatment outcomes in LADC.

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