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Author Spotlight: THP-1 Macrophage Response to LPS/ATP — Unveiling the Pyroptosis, Apoptosis, and Necroptosis Spectrum
Published on: May 3, 2024
The role of pyroptosis in viral infection
Zhen Zhao1, Yan Zhang2,3, Bing Luo4
1Department of Pathogenic Biology, School of Basic Medicine, Qingdao University, Qingdao, 266071, China.
Abstract:
Pyroptosis, also known as inflammatory necrosis, is a form of programmed cell death, which is an important natural immune response. Pyroptosis plays a major role in combating pathogenic infections. The mechanism of pyroptosis is distinct from other forms of cell death and is characterized by its dependence on inflammatory caspases (mainly caspases 1, 4, 5, and 11). Activation of NOD-like receptor thermal protein domain associated protein 3 (NLRP3) inflammatory vesicles is involved in caspase-1 activation and cleavage, which in turn triggers cleavage and multimerization of multiple gasdermin family members, including gasdermin-D (GSDMD). This further leads to cell perforation and cellular distension, causing cell membrane rupture, resulting in a massive efflux of cell contents, which triggers inflammatory reactions. In recent years, detailed study of viral diseases, has demonstrated that pyroptosis is closely associated with the development of viral diseases. This article focuses on the mechanism of pyroptosis and the connection between pyroptosis and viral infection.
Insights
Pyroptosis, an inflammatory programmed cell death, is crucial for fighting infections. This cell death pathway is linked to viral diseases, highlighting its role in immunity and pathogenesis.
Area of Science:
- Immunology
- Cell Biology
- Pathology
Background:
- Pyroptosis is a programmed inflammatory cell death mechanism vital for immune responses against pathogens.
- It is characterized by dependence on inflammatory caspases and distinct from other cell death forms.
Purpose of the Study:
- To elucidate the molecular mechanisms of pyroptosis.
- To explore the association between pyroptosis and the pathogenesis of viral diseases.
Main Methods:
- Review of existing literature on pyroptosis.
- Analysis of molecular pathways involving inflammatory caspases and gasdermins.
- Examination of studies linking pyroptosis to viral infections.
Main Results:
- Pyroptosis activation involves NLRP3 inflammasomes, caspase-1, and gasdermin-D (GSDMD).
- This process leads to cell membrane rupture, inflammatory mediator release, and cell death.
- Emerging evidence indicates a significant role for pyroptosis in viral disease development.
Conclusions:
- Pyroptosis is a key inflammatory cell death pathway with implications for infectious disease control.
- Understanding pyroptosis mechanisms is essential for developing novel therapeutic strategies against viral infections.
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