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Inflammasomes and human autoimmunity: A comprehensive review
Chin-An Yang1, Bor-Luen Chiang2
1Department of Laboratory Medicine, China Medical University Hospital, Taiwan; Department of General Pediatrics, China Medical University Children's Hospital, Taichung, Taiwan.
Journal of Autoimmunity
|May 26, 2015
Summary
Inflammasomes, key to innate immunity, are increasingly linked to autoimmune diseases through genetic variations. These variations influence disease susceptibility and severity, highlighting inflammasomes
Area of Science:
- Immunology
- Genetics
- Autoimmune Diseases
Background:
- Inflammasomes are multi-protein complexes involving NLRs/ALRs, ASC, and caspase-1, crucial for initiating inflammation by processing IL-1β and IL-18.
- While inflammasome mutations cause autoinflammatory diseases, genetic polymorphisms in inflammasome components are gaining attention for their role in autoimmune conditions.
- These polymorphisms affect innate immunity and the progression of autoimmune diseases, including rheumatoid arthritis (RA), vitiligo, and systemic lupus erythematosus (SLE).
Purpose of the Study:
- To explore the role of genetic polymorphisms in inflammasome components in the context of autoimmune diseases.
- To understand how inflammasome variations influence susceptibility and severity in conditions like RA, juvenile idiopathic arthritis, and SLE.
- To highlight the interplay between innate immunity, inflammasomes, and the development of chronic autoimmune pathologies.
Main Methods:
- Review of existing literature on inflammasomes, genetic polymorphisms, and autoimmune diseases.
- Analysis of the impact of specific inflammasome components (e.g., NLRP1) and single nucleotide polymorphisms (SNPs) on disease susceptibility.
- Examination of the role of IL-1β and IL-18 in perpetuating inflammatory responses and endothelial damage in autoimmunity.
Main Results:
- Genetic variations in inflammasome components, such as NLRP1 haplotypes and other SNPs, are associated with susceptibility and severity in various autoimmune diseases.
- Active caspase-1 and its products, IL-1β and IL-18, contribute to Th17 responses and endothelial damage, exacerbating autoimmune conditions.
- Innate immune system activation, driven by inflammasomes, plays a significant role in the pathogenesis of experimental autoimmune encephalomyelitis (EAE) and lupus nephritis.
Conclusions:
- Genetic polymorphisms in inflammasomes are critical factors influencing the development and progression of autoimmune diseases.
- Inflammasomes and their downstream cytokines (IL-1β, IL-18) are key mediators in autoimmune pathologies, linking innate and adaptive immunity.
- Targeting inflammasome pathways presents a potential therapeutic strategy for managing autoimmune diseases.
