UMMS Affiliation

Program in Innate Immunity, Division of Infectious Diseases and Immunology, Department of Medicine; Graduate School of Biomedical Sciences

Publication Date

2021-05-11

Document Type

Article

Disciplines

Cell Biology | Cells | Enzymes and Coenzymes | Immune System Diseases | Molecular and Cellular Neuroscience | Nervous System Diseases

Abstract

Receptor interacting protein kinase 1 (RIPK1) mediates cell death and inflammatory signaling and is increased in multiple sclerosis (MS) brain samples. Here, we investigate the role of glial RIPK1 kinase activity in mediating MS pathogenesis. We demonstrate RIPK1 levels correlate with MS disease progression. We find microglia are susceptible to RIPK1-mediated cell death and identify an inflammatory gene signature that may contribute to the neuroinflammatory milieu in MS patients. We uncover a distinct role for RIPK1 in astrocytes in regulating inflammatory signaling in the absence of cell death and confirm RIPK1-kinase-dependent regulation in human glia. Using a murine MS model, we show RIPK1 inhibition attenuates disease progression and suppresses deleterious signaling in astrocytes and microglia. Our results suggest RIPK1 kinase activation in microglia and astrocytes induces a detrimental neuroinflammatory program that contributes to the neurodegenerative environment in progressive MS.

Keywords

RIPK1, astrocyte, cell death, inflammation, microglia, multiple sclerosis, necroptosis

Rights and Permissions

Copyright 2021 The Author(s). This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).

DOI of Published Version

10.1016/j.celrep.2021.109112

Source

Zelic M, Pontarelli F, Woodworth L, Zhu C, Mahan A, Ren Y, LaMorte M, Gruber R, Keane A, Loring P, Guo L, Xia TH, Zhang B, Orning P, Lien E, Degterev A, Hammond T, Ofengeim D. RIPK1 activation mediates neuroinflammation and disease progression in multiple sclerosis. Cell Rep. 2021 May 11;35(6):109112. doi: 10.1016/j.celrep.2021.109112. PMID: 33979622. Link to article on publisher's site

Journal/Book/Conference Title

Cell reports

Comments

Full author list omitted for brevity. For the full list of authors, see article.

Related Resources

Link to Article in PubMed

PubMed ID

33979622

Creative Commons License

Creative Commons Attribution 4.0 License
This work is licensed under a Creative Commons Attribution 4.0 License.

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