Research progress on pyroptosis and its effect on the central nervous system

Area of Science:

• Cell Biology
• Immunology
• Neuroscience

Background:

• Pyroptosis is a pro-inflammatory programmed cell death pathway.
• It involves the activation of caspase-1 and the executor protein GSDMD.
• This process leads to cell lysis and the release of inflammatory cytokines.

Purpose of the Study:

• To summarize the canonical pyroptosis signaling pathway.
• To highlight the key regulatory proteins involved in pyroptosis.
• To discuss the dual role of pyroptosis in host defense and neuroinflammation.

Main Methods:

• Literature review of pyroptosis signaling pathways.
• Analysis of the roles of key proteins: inflammasome, caspase-1, GSDMD, IL-1β, and IL-18.
• Examination of pyroptosis's impact on the central nervous system.

Main Results:

• The NLRP3 inflammasome activates caspase-1, cleaving GSDMD.
• GSDMD forms pores, releasing IL-1β and IL-18, causing cell lysis.
• While beneficial for host defense, excessive pyroptosis damages the CNS.

Conclusions:

• Pyroptosis is a critical inflammatory cell death pathway regulated by specific proteins.
• Aberrant pyroptosis in the CNS leads to neuroinflammation, BBB damage, and cognitive deficits.
• Understanding pyroptosis is crucial for addressing neuroinflammatory diseases.