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Updated: Jun 22, 2026

Exploring Caspase Mutations and Post-Translational Modification by Molecular Modeling Approaches
Published on: October 13, 2022
Apoptosis and cancer: mutations within caspase genes
S Ghavami1, M Hashemi, S R Ande
1Department of Physiology, University of Manitoba, Winnipeg, Manitoba, Canada.
Abstract:
The inactivation of programmed cell death has profound effects not only on the development but also on the overall integrity of multicellular organisms. Beside developmental abnormalities, it may lead to tumorigenesis, autoimmunity, and other serious health problems. Deregulated apoptosis may also be the leading cause of cancer therapy chemoresistance. Caspase family of cysteinyl-proteases plays the key role in the initiation and execution of programmed cell death. This review gives an overview of the role of caspases, their natural modulators like IAPs, FLIPs, and Smac/Diablo in apoptosis and upon inactivation, and also in cancer development. Besides describing the basic mechanisms governing programmed cell death, a large part of this review is dedicated to previous studies that were focused on screening tumours for mutations within caspase genes as well as their regulators. The last part of this review discusses several emerging treatments that involve modulation of caspases and their regulators. Thus, we also highlight caspase cascade modulating experimental anticancer drugs like cFLIP-antagonist CDDO-Me; cIAP1 antagonists OSU-03012 and ME-BS; and XIAP small molecule antagonists 1396-11, 1396-12, 1396-28, triptolide, AEG35156, survivin/Hsp90 antagonist shephedrin, and some of the direct activators of procaspase-3.
Insights
Dysregulation of programmed cell death, particularly apoptosis, contributes to cancer and chemoresistance. Modulating caspases and their regulators offers promising new anticancer therapies.
Area of Science:
- Cell Biology
- Molecular Biology
- Oncology
Background:
- Programmed cell death (apoptosis) is crucial for multicellular organism development and integrity.
- Inactivation of apoptosis can lead to developmental abnormalities, autoimmunity, and cancer.
- Apoptosis deregulation is a key factor in cancer therapy chemoresistance.
Purpose of the Study:
- To review the role of caspases and their natural modulators in apoptosis and cancer.
- To examine studies on caspase gene mutations in tumors.
- To discuss emerging cancer treatments targeting caspases and their regulators.
Main Methods:
- Literature review of programmed cell death mechanisms.
- Analysis of studies screening tumors for mutations in caspase genes and regulators.
- Discussion of experimental anticancer drugs modulating caspase pathways.
Main Results:
- Caspase family proteases are central to apoptosis initiation and execution.
- Natural modulators include IAPs, FLIPs, and Smac/Diablo.
- Emerging treatments involve antagonists for cFLIP, cIAP1, XIAP, and survivin, alongside procaspase-3 activators.
Conclusions:
- Caspase modulation is a viable strategy for cancer therapy.
- Targeting apoptosis pathways presents novel therapeutic opportunities.
- Experimental drugs show potential in overcoming cancer chemoresistance.
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The Intrinsic Apoptotic Pathway
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The Extrinsic Apoptotic Pathway
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