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Updated: Dec 22, 2025

Characterization of MLKL-mediated Plasma Membrane Rupture in Necroptosis
Published on: August 7, 2018
Molecular mechanisms of necroptosis and relevance for neurodegenerative diseases
Pedro A Dionísio1, Joana D Amaral1, Cecília M P Rodrigues1
1Research Institute for Medicines (iMed.ULisboa), Faculty of Pharmacy, Universidade de Lisboa, Lisbon, Portugal.
Abstract:
Necroptosis is a regulated cell death pathway morphologically similar to necrosis that depends on the kinase activity of receptor interacting protein 3 (RIP3) and the subsequent activation of the pseudokinase mixed lineage kinase domain-like protein (MLKL), being also generally dependent on RIP1 kinase activity. Necroptosis can be recruited during pathological conditions, usually following the activation of death receptors under specific cellular contexts. In this regard, necroptosis has been implicated in the pathogenesis of multiple disorders, including acute and chronic neurodegenerative diseases, such as Parkinson's and Alzheimer's diseases, and multiple sclerosis. Here, we summarize the molecular mechanisms regulating the induction of necroptosis and downstream effectors of this form of cell death, besides exploring non-necroptotic roles for necroptosis-related proteins that may impact on alternative cell death pathways and inflammatory mechanisms in disease. Finally, we outline the recent evidence implicating necroptosis in neurodegenerative conditions and the emerging therapeutic perspectives targeting necroptosis in these diseases.
Insights
Necroptosis, a regulated cell death pathway involving RIP3 and MLKL, is implicated in neurodegenerative diseases like Alzheimer's and Parkinson's. Targeting necroptosis offers potential therapeutic strategies for these conditions.
Area of Science:
- Cell Biology
- Neuroscience
- Immunology
Background:
- Necroptosis is a regulated form of necrosis dependent on RIP3 and MLKL.
- This cell death pathway is activated by death receptors under specific pathological conditions.
- Necroptosis is increasingly recognized for its role in neurodegenerative diseases.
Purpose of the Study:
- To summarize the molecular mechanisms of necroptosis induction and its effectors.
- To explore non-necroptotic functions of related proteins in cell death and inflammation.
- To review the involvement of necroptosis in neurodegeneration and potential therapeutic targets.
Main Methods:
- Literature review and synthesis of existing research on necroptosis.
- Analysis of molecular pathways regulating necroptosis.
- Examination of evidence linking necroptosis to neurodegenerative diseases.
Main Results:
- Detailed description of the RIP1-RIP3-MLKL signaling axis in necroptosis.
- Identification of necroptosis's role in the pathogenesis of Alzheimer's, Parkinson's, and multiple sclerosis.
- Exploration of alternative functions of necroptosis-related proteins in cellular processes.
Conclusions:
- Necroptosis is a key pathway in neuroinflammation and neurodegeneration.
- Targeting necroptosis presents promising therapeutic avenues for neurological disorders.
- Further research into necroptosis mechanisms and non-canonical roles is warranted.
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