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Necroptosis in Organ Transplantation: Mechanisms and Potential Therapeutic Targets
Yajin Zhao1, Kimberly Main1,2, Tanroop Aujla1,3
1Latner Thoracic Surgery Research Laboratories, Toronto General Hospital Research Institute, University Health Network, Toronto, ON M5G 1L7, Canada.
Abstract:
Organ transplantation remains the only treatment option for patients with end-stage organ dysfunction. However, there are numerous limitations that challenge its clinical application, including the shortage of organ donations, the quality of donated organs, injury during organ preservation and reperfusion, primary and chronic graft dysfunction, acute and chronic rejection, infection, and carcinogenesis in post-transplantation patients. Acute and chronic inflammation and cell death are two major underlying mechanisms for graft injury. Necroptosis is a type of programmed cell death involved in many diseases and has been studied in the setting of all major solid organ transplants, including the kidney, heart, liver, and lung. It is determined by the underlying donor organ conditions (e.g., age, alcohol consumption, fatty liver, hemorrhage shock, donation after circulatory death, etc.), preservation conditions and reperfusion, and allograft rejection. The specific molecular mechanisms of necroptosis have been uncovered in the organ transplantation setting, and potential targeting drugs have been identified. We hope this review article will promote more clinical research to determine the role of necroptosis and other types of programmed cell death in solid organ transplantation to alleviate the clinical burden of ischemia-reperfusion injury and graft rejection.
Insights
Necroptosis, a programmed cell death, contributes to organ transplant complications. Targeting necroptosis may reduce ischemia-reperfusion injury and graft rejection in transplant patients.
Area of Science:
- Transplantation immunology
- Cellular biology
- Graft injury mechanisms
Background:
- Organ transplantation is crucial for end-stage organ dysfunction but faces challenges like organ shortage and graft dysfunction.
- Acute and chronic inflammation, along with cell death, are key drivers of graft injury post-transplantation.
- Necroptosis, a form of programmed cell death, is implicated in various diseases and solid organ transplant settings.
Purpose of the Study:
- To review the role of necroptosis in solid organ transplantation.
- To explore the molecular mechanisms of necroptosis in the context of organ transplantation.
- To identify potential therapeutic targets for necroptosis to improve transplant outcomes.
Main Methods:
- Literature review of studies on necroptosis in kidney, heart, liver, and lung transplantation.
- Analysis of factors influencing necroptosis, including donor organ quality and preservation.
- Examination of molecular pathways and potential drug targets related to necroptosis.
Main Results:
- Necroptosis is influenced by donor organ conditions (e.g., age, fatty liver, shock) and preservation/reperfusion.
- Molecular mechanisms of necroptosis in transplantation are increasingly understood.
- Potential drugs targeting necroptosis pathways have been identified.
Conclusions:
- Necroptosis plays a significant role in solid organ transplant injury and dysfunction.
- Targeting necroptosis presents a promising therapeutic strategy for mitigating ischemia-reperfusion injury and rejection.
- Further clinical research is needed to validate the role of necroptosis and guide therapeutic interventions in transplantation.
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