Cited by 358Amyotrophic Lateral Sclerosis ResearchNeuroinflammation and Neurodegeneration MechanismsMultiple Sclerosis Research Studies

The DOI matches its Crossref record; 63 of the 63 references it cites were found in a registry or an index.

Targeting mi R‐155 restores abnormal microglia and attenuates disease in SOD 1 mice

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Abstract

Objective: To investigate miR‐155 in the SOD1 mouse model and human sporadic and familial amyotrophic lateral sclerosis (ALS). Methods: NanoString microRNA, microglia and immune gene profiles, protein mass spectrometry, and RNA‐seq analyses were measured in spinal cord microglia, splenic monocytes, and spinal cord tissue from SOD1 mice and in spinal cord tissue of familial and sporadic ALS. miR‐155 was targeted by genetic ablation or by peripheral or centrally administered anti–miR‐155 inhibitor in SOD1 mice. Results: In SOD1 mice, we found loss of the molecular signature that characterizes homeostatic microglia and increased expression of miR‐155. There was loss of the microglial molecules P2ry12, Tmem119, Olfml3, transcription factors Egr1, Atf3, Jun, Fos, and Mafb, and the upstream regulators Csf1r, Tgfb1, and Tgfbr1, which are essential for microglial survival. Microglia biological functions were suppressed including phagocytosis. Genetic ablation of miR‐155 increased survival in SOD1 mice by 51 days in females and 27 days in males and restored the abnormal microglia and monocyte molecular signatures. Disease severity in SOD1 males was associated with early upregulation of inflammatory genes, including Apoe in microglia. Treatment of adult microglia with apolipoprotein E suppressed the M0‐homeostatic unique microglia signature and induced an M1‐like phenotype. miR‐155 expression was increased in the spinal cord of both familial and sporadic ALS. Dysregulated proteins that we identified in human ALS spinal cord were restored in SOD1 G93A/miR‐155−/− mice. Intraventricular anti–miR‐155 treatment derepressed microglial miR‐155 targeted genes, and peripheral anti–miR‐155 treatment prolonged survival. Interpretation: We found overexpression of miR‐155 in the SOD1 mouse and in both sporadic and familial human ALS. Targeting miR‐155 in SOD1 mice restores dysfunctional microglia and ameliorates disease. These findings identify miR‐155 as a therapeutic target for the treatment of ALS. ANN NEUROL 2015;77:75–99

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Metadata

Authors
Butovsky, O., Jedrychowski, M. P., Cialic, R., Krasemann, S., Murugaiyan, G., Fanek, Z., Greco, D. J., Wu, P. M., Doykan, C. E., Kiner, O., Lawson, R. J., Frosch, M. P., Pochet, N., Fatimy, R. E., Krichevsky, A. M., Gygi, S. P., Lassmann, H., Berry, J., Cudkowicz, M. E., & Weiner, H. L.
Affiliations
  • Brigham and Women's Hospital (US)
  • Harvard University (US)
  • University Medical Center Hamburg-Eppendorf (DE)
  • Broad Institute (US)
  • Medical University of Vienna (AT)
Corresponding author
Butovsky, Oleg
Venue
Annals of Neurology
Publisher
Wiley
Published
2014-11-27
Volume
77
Issue
1
Pages
75-99
ISSN
  • 0364-5134 (ISSN-L)
  • 1531-8249
OpenAlex
W1545421865
Cited by
358
References
63
Citations by year
2026: 10 · 2025: 22 · 2024: 33 · 2023: 31 · 2022: 46 · 2021: 32 · 2020: 33 · 2019: 29 · 2018: 41 · 2017: 35 · 2016: 26 · 2015: 20
FWCI
17.60
Type
journal article
Language
en
Open access
Locations
  • Annals of Neurology (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • National Institutes of Health (NS088137)
  • U.S. Department of Defense (AL120029)
  • Amyotrophic Lateral Sclerosis Association (IV78RI, ALSA2087)
  • National Multiple Sclerosis Society
  • The Nancy Davis Foundation for Multiple Sclerosis
  • Edward N. & Della L. Thome Memorial Foundation
Topics
  • Health Sciences › Medicine › Clinical Neurology › Amyotrophic Lateral Sclerosis Research
  • Life Sciences › Neuroscience › Neurology › Neuroinflammation and Neurodegeneration Mechanisms
  • Health Sciences › Medicine › Clinical Neurology › Multiple Sclerosis Research Studies
Keywords
miR-155, amyotrophic lateral sclerosis, microglia, microglial homeostasis, apolipoprotein E, microglial phagocytosis, microglial survival, therapeutic target, familial ALS, sporadic ALS
MeSH terms
Aged, Amyotrophic Lateral Sclerosis, Animals, Apolipoproteins E, Cells, Cultured, Disease Models, Animal, Female, Gene Expression Regulation, Hippocampus, Humans, Male, Mice, Transgenic, Middle Aged, Monocytes, Neurons, Phagocytosis, Spinal Cord, Superoxide Dismutase, Transforming Growth Factor beta, Microglia, Oligoribonucleotides, Antisense, MicroRNAs, Mice

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