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Targeting Necrosis: Elastase-like Protease Inhibitors Curtail Necrotic Cell Death Both In Vitro and in Three In Vivo
Boris Khalfin1, Alexandra Lichtenstein1, Amnon Albeck2
1Department of Clinical Biochemistry and Pharmacology, Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer Sheva 8410501, Israel.
Abstract:
Necrosis is the main mode of cell death, which leads to multiple clinical conditions affecting hundreds of millions of people worldwide. Its molecular mechanisms are poorly understood, hampering therapeutics development. Here, we identify key proteolytic activities essential for necrosis using various biochemical approaches, enzymatic assays, medicinal chemistry, and siRNA library screening. These findings provide strategies to treat and prevent necrosis, including known medicines used for other indications, siRNAs, and establish a platform for the design of new inhibitory molecules. Indeed, inhibitors of these pathways demonstrated protective activity in vitro and in vivo in animal models of traumatic brain injury, acute myocardial infarction, and drug-induced liver toxicity. Consequently, this study may pave the way for the development of novel therapies for the treatment, inhibition, or prevention of a large number of hitherto untreatable diseases.
Insights
Researchers identified key proteolytic activities driving necrosis, a major cell death pathway. This discovery offers new therapeutic strategies and drug targets for numerous diseases.
Area of Science:
- Biochemistry and Molecular Biology
- Cell Death Research
- Drug Discovery
Background:
- Necrosis is a primary cell death mechanism implicated in numerous widespread diseases.
- The molecular underpinnings of necrosis remain largely unelucidated, limiting therapeutic interventions.
- Understanding necrosis is critical for developing treatments for millions affected globally.
Purpose of the Study:
- To identify critical proteolytic activities essential for the process of necrosis.
- To establish a foundation for developing novel therapeutic strategies against necrosis.
- To explore existing and novel inhibitors for potential necrosis treatment.
Main Methods:
- Utilized biochemical approaches and enzymatic assays.
- Employed medicinal chemistry and siRNA library screening.
- Validated findings through in vitro and in vivo studies.
Main Results:
- Identified key proteolytic activities indispensable for necrosis.
- Demonstrated that inhibitors of these pathways offer protective effects.
- Showcased efficacy in animal models of traumatic brain injury, myocardial infarction, and liver toxicity.
Conclusions:
- This research provides crucial insights into necrosis mechanisms.
- Identified therapeutic strategies including existing drugs and siRNAs.
- Offers a platform for designing new inhibitory molecules for treating necrosis-related diseases.
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