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Updated: Aug 18, 2026

Measuring Composition of CD95 Death-Inducing Signaling Complex and Processing of Procaspase-8 in this Complex
Published on: August 2, 2021
The caspase-8 modulator c-FLIP
1Center for Biological Resources and Informatics, Tokyo Institute of Technology, Midori-ku, Yokohama, Japan. tkataoka@bio.tech.ac.jp
Abstract:
Death receptors belong to the tumor necrosis factor receptor superfamily and can induce apoptosis through activation of procaspase-8. The cellular FLICE-inhibitory protein (c-FLIP) is able to modulate activation of procaspase-8 and thereby prevents induction of apoptosis mediated by death receptors. As an important modulator of caspase-8, c-FLIP regulates life and death in various types of normal cells and tissues, such as lymphoid cells, and renders resistance to death receptor-mediated apoptosis in many types of cancer cells. In addition to an apoptosis modulator, c-FLIP has been shown to exert other physiological functions related to cell proliferation and tumorigenesis. Dysregulation of c-FLIP expression has been shown to be associated with various diseases, such as cancer and autoimmune diseases, and c-FLIP might be a critical target for therapeutic intervention. This review focuses on recent findings about the physiological function and intracellular regulation of c-FLIP.
Insights
Cellular FLICE-inhibitory protein (c-FLIP) regulates apoptosis and cell survival. This review highlights c-FLIP
Area of Science:
- Molecular Biology
- Cell Biology
- Immunology
Background:
- Death receptors initiate apoptosis via procaspase-8 activation.
- Cellular FLICE-inhibitory protein (c-FLIP) inhibits this process.
- c-FLIP is crucial for normal cell function and cancer cell survival.
Purpose of the Study:
- To review recent findings on c-FLIP's physiological functions.
- To explore the intracellular regulation of c-FLIP.
- To discuss c-FLIP's role in disease and therapeutic potential.
Main Methods:
- Literature review of recent studies on c-FLIP.
- Analysis of c-FLIP's role in apoptosis pathways.
- Examination of c-FLIP's involvement in cell proliferation and tumorigenesis.
Main Results:
- c-FLIP modulates caspase-8 activation, impacting cell death.
- c-FLIP plays roles beyond apoptosis, including cell proliferation.
- Dysregulated c-FLIP is linked to cancer and autoimmune diseases.
Conclusions:
- c-FLIP is a key regulator of cell fate.
- Understanding c-FLIP's functions is vital for disease treatment.
- c-FLIP represents a potential therapeutic target.
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