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Targeting Pyroptotic Cell Death Pathways in Retinal Disease
Mary Zhao1, Siqi Li1, Joanne A Matsubara1
1Department of Ophthalmology and Visual Sciences, Eye Care Centre, Faculty of Medicine, University of British Columbia, Vancouver, BC, Canada.
Abstract:
Pyroptosis is a gasdermin-mediated, pro-inflammatory form of cell death distinct from apoptosis. In recent years, increasing attention has shifted toward pyroptosis as more studies demonstrate its involvement in diverse inflammatory disease states, including retinal diseases. This review discusses how currently known pyroptotic cell death pathways have been implicated in models of age-related macular degeneration, diabetic retinopathy, and glaucoma. We also identify potential future therapeutic strategies for these retinopathies that target drivers of pyroptotic cell death. Presently, the drivers of pyroptosis that have been studied the most in retinal cells are the nucleotide-binding and oligomerization domain-like receptor family pyrin domain-containing 3 (NLRP3) inflammasome, caspase-1, and gasdermin D (GSDMD). Targeting these proteins may help us develop new drug therapies, or supplement existing therapies, in the treatment of retinal diseases. As novel mechanisms of pyroptosis come to light, including those involving other inflammatory caspases and members of the gasdermin protein family, more targets for pyroptosis-mediated therapies in retinal disease can be explored.
Insights
Pyroptosis, a programmed inflammatory cell death, is increasingly linked to retinal diseases. Targeting key pyroptosis pathways like NLRP3 inflammasome offers potential new therapies for conditions such as macular degeneration, diabetic retinopathy, and glaucoma.
Area of Science:
- Ophthalmology
- Cell Biology
- Immunology
Background:
- Pyroptosis is a pro-inflammatory cell death pathway mediated by gasdermins.
- Increasing evidence links pyroptosis to various inflammatory conditions, including retinal diseases.
- Understanding pyroptosis mechanisms is crucial for developing novel therapeutic strategies.
Purpose of the Study:
- To review the role of pyroptosis in models of age-related macular degeneration, diabetic retinopathy, and glaucoma.
- To identify potential therapeutic targets within pyroptotic cell death pathways for retinopathies.
- To explore emerging mechanisms of pyroptosis and their implications for future treatments.
Main Methods:
- Literature review of studies investigating pyroptosis in retinal disease models.
- Analysis of the involvement of key pyroptosis mediators, including NLRP3 inflammasome, caspase-1, and GSDMD.
- Identification of potential therapeutic strategies targeting pyroptosis drivers.
Main Results:
- Pyroptotic cell death pathways are implicated in age-related macular degeneration, diabetic retinopathy, and glaucoma models.
- The NLRP3 inflammasome, caspase-1, and GSDMD are currently the most studied drivers of pyroptosis in retinal cells.
- Targeting these proteins presents a promising avenue for developing new or supplementary therapies for retinal diseases.
Conclusions:
- Pyroptosis plays a significant role in the pathogenesis of major retinal diseases.
- Targeting the NLRP3 inflammasome, caspase-1, and GSDMD offers viable therapeutic strategies for retinopathies.
- Further exploration of novel pyroptosis mechanisms will uncover additional therapeutic targets for retinal diseases.
