Gasdermins as evolutionarily conserved executors of inflammation and cell death

Area of Science:

• Immunology
• Cell Biology
• Molecular Biology

Background:

• Gasdermins are pore-forming proteins central to pyroptosis, a critical innate immune cell death pathway.
• Pyroptosis eliminates infected or malignant cells, playing a vital role in host defense and cancer surveillance.
• Mammalian gasdermins possess a conserved structure: a cytotoxic N-terminal domain, linker, and C-terminal repressor domain.

Purpose of the Study:

• To review recent advancements in understanding gasdermin biology and function in mammals.
• To elucidate the activation mechanisms and regulatory networks governing gasdermin activity.
• To highlight the diverse roles of gasdermins in autoimmunity, host defense, and cancer.

Main Methods:

• Literature review of recent research on gasdermin function.
• Analysis of molecular mechanisms underlying gasdermin activation and pore formation.
• Comparative examination of gasdermin roles across different biological contexts (mammalian, fungal, bacterial).

Main Results:

• Proteolytic cleavage of the linker releases the N-terminal cytotoxic domain, enabling pore formation.
• Gasdermin pore formation leads to plasma membrane permeabilization, loss of electrochemical gradient, and cell lysis.
• Gasdermins are implicated in critical physiological and pathological processes, including host defense and cancer.

Conclusions:

• Gasdermin-mediated pyroptosis is a conserved cell death mechanism with significant implications for health and disease.
• Further research into gasdermin activation and regulation can yield therapeutic strategies for immune disorders and cancer.
• Understanding gasdermin function provides insights into fundamental cellular processes and host-pathogen interactions.