Cited by 139Neuroinflammation and Neurodegeneration MechanismsGenetics, Aging, and Longevity in Model OrganismsDNA Repair Mechanisms

ATM kinase inhibition in glial cells activates the innate immune response and causes neurodegeneration in Drosophila

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Petersen, Andrew J., Rimkus, Stacey A., Wassarman, David A.·2012·Proceedings of the National Academy of Sciences

Abstract

To investigate the mechanistic basis for central nervous system (CNS) neurodegeneration in the disease ataxia–telangiectasia (A-T), we analyzed flies mutant for the causative gene A-T mutated ( ATM ). ATM encodes a protein kinase that functions to monitor the genomic integrity of cells and control cell cycle, DNA repair, and apoptosis programs. Mutation of the C-terminal amino acid in Drosophila ATM inhibited the kinase activity and caused neuron and glial cell death in the adult brain and a reduction in mobility and longevity. These data indicate that reduced ATM kinase activity is sufficient to cause neurodegeneration in A-T. ATM kinase mutant flies also had elevated expression of innate immune response genes in glial cells. ATM knockdown in glial cells, but not neurons, was sufficient to cause neuron and glial cell death, a reduction in mobility and longevity, and elevated expression of innate immune response genes in glial cells, indicating that a non–cell-autonomous mechanism contributes to neurodegeneration in A-T. Taken together, these data suggest that early-onset CNS neurodegeneration in A-T is similar to late-onset CNS neurodegeneration in diseases such as Alzheimer's in which uncontrolled inflammatory response mediated by glial cells drives neurodegeneration.

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Authors
Petersen, A. J., Rimkus, S. A., & Wassarman, D. A.
Affiliations
University of Wisconsin–Madison (US)
Corresponding author
Wassarman, David A.
Venue
Proceedings of the National Academy of Sciences
Published
2012-02-21
Volume
109
Issue
11
Pages
E656-64
ISSN
  • 0027-8424 (ISSN-L)
  • 1091-6490
OpenAlex
W1979050144
Cited by
139
References
68
Citations by year
2026: 8 · 2025: 5 · 2024: 8 · 2023: 10 · 2022: 14 · 2021: 17 · 2020: 13 · 2019: 9 · 2018: 12 · 2017: 6 · 2016: 4 · 2015: 12 · 2014: 11 · 2013: 8 · 2012: 2
FWCI
5.32
Type
journal article
Language
en
Open access
Locations
  • Proceedings of the National Academy of Sciences (publishedVersion)
  • Europe PMC (PubMed Central) (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • National Institutes of Health
  • National Institute of General Medical Sciences (T32 GM08688, T32GM008688)
  • National Institute of Neurological Disorders and Stroke (R01NS059001)
Topics
  • Life Sciences › Neuroscience › Neurology › Neuroinflammation and Neurodegeneration Mechanisms
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Aging › Genetics, Aging, and Longevity in Model Organisms
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › DNA Repair Mechanisms
Keywords
ataxia telangiectasia, ATM kinase, glial cells, neurodegeneration, innate immune response, glial cell death, non-cell autonomous neurodegeneration, Drosophila, kinase activity, neuroinflammation, aging, mobility (physical function)
MeSH terms
Animals, Brain, DNA-Binding Proteins, Drosophila melanogaster, Immunity, Innate, Longevity, Nerve Degeneration, Neuroglia, Neurons, Temperature, Up-Regulation, Cell Death, Protein Serine-Threonine Kinases, Cell Cycle Proteins, Tumor Suppressor Proteins, Drosophila Proteins, Gene Knockdown Techniques, Ataxia Telangiectasia Mutated Proteins

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