Cited by 319Amyotrophic Lateral Sclerosis ResearchAutophagy in Disease and TherapyHereditary Neurological Disorders

TBK1: a new player in ALS linking autophagy and neuroinflammation

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Oakes, James A., Davies, Maria C., Collins, Mark O.·2017·Molecular Brain

Abstract

Amyotrophic lateral sclerosis (ALS) is an adult-onset neurodegenerative disorder affecting motor neurons, resulting in progressive muscle weakness and death by respiratory failure. Protein and RNA aggregates are a hallmark of ALS pathology and are thought to contribute to ALS by impairing axonal transport. Mutations in several genes known to contribute to ALS result in deposition of their protein products as aggregates; these include TARDBP, C9ORF72, and SOD1. In motor neurons, this can disrupt transport of mitochondria to areas of metabolic need, resulting in damage to cells and can elicit a neuroinflammatory response leading to further neuronal damage. Recently, eight independent human genetics studies have uncovered a link between TANK-binding kinase 1 (TBK1) mutations and ALS. TBK1 belongs to the IKK-kinase family of kinases that are involved in innate immunity signaling pathways; specifically, TBK1 is an inducer of type-1 interferons. TBK1 also has a major role in autophagy and mitophagy, chiefly the phosphorylation of autophagy adaptors. Several other ALS genes are also involved in autophagy, including p62 and OPTN. TBK1 is required for efficient cargo recruitment in autophagy; mutations in TBK1 may result in impaired autophagy and contribute to the accumulation of protein aggregates and ALS pathology. In this review, we focus on the role of TBK1 in autophagy and the contributions of this process to the pathophysiology of ALS.

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  • TBK1 is a cytoplasmically-localized homodimeric multidomain protein with an ubiquitin-like domain, an N-terminal serine/threonine kinase domain, and two coiled-coil domains.

    “TBK1/NAK/T2K (TANK binding kinase 1) is a cytoplasmically-localized homodimeric multidomain protein with an ubiquitin-like domain, a N-terminal serine/threonine kinase domain, and two coiled-coil domains [192].”
  • Tbk1 deletion disrupts the migration of T-cells that may exert anti-inflammatory effects in ALS models.

    “In keeping with this, Tbk1 deletion disrupts the migration of T-cells [216] that may exert anti-inflammatory effects in ALS models [192,217].”
  • ALS-associated mutations in TBK1, OPTN, SQSTM1, and VCP all affect autophagy as well as microglial function and innate immunity.

    “ALS-associated mutations in TBK1, OPTN, SQSTM1, and VCP all affect autophagy as well as microglial function and innate immunity [192,205,206,441–443].”

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Authors
Oakes, J. A., Davies, M. C., & Collins, M. O.
Affiliations
University of Sheffield (GB)
Corresponding author
Collins, Mark O.
Venue
Molecular Brain
Published
2017-02-02
Volume
10
Issue
1
Pages
5-5
ISSN
1756-6606 (ISSN-L)
OpenAlex
W2585432400
Cited by
319
References
79
Citations by year
2026: 19 · 2025: 27 · 2024: 45 · 2023: 30 · 2022: 46 · 2021: 39 · 2020: 49 · 2019: 23 · 2018: 26 · 2017: 14 · 2016: 1
FWCI
4.08
Type
journal article
Language
en
Open access
Licence
cc-by
Locations
  • Molecular Brain (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • White Rose Research Online (University of Leeds, The University of Sheffield, University of York) (acceptedVersion)
Funders
Royal Society (R/144823-11-1)
Topics
  • Health Sciences › Medicine › Neurology › Amyotrophic Lateral Sclerosis Research
  • Health Sciences › Medicine › Epidemiology › Autophagy in Disease and Therapy
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Hereditary Neurological Disorders
Keywords
amyotrophic lateral sclerosis, TBK1, autophagy, neuroinflammation, protein aggregates, motor neurons, mitophagy, axonal transport, type I interferon signaling, p62, optineurin, ALS genetics, neurodegeneration
MeSH terms
Amyotrophic Lateral Sclerosis, Animals, Autophagy, Humans, Inflammation, Models, Biological, Nervous System, Protein Serine-Threonine Kinases

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