Senescent Microglia: The Key to the Ageing Brain?

Ageing represents the single biggest risk factor for development of neurodegenerative disease. Despite being such long-lived cells, microglia have been relatively understudied for their role in the ageing process. Reliably identifying aged microglia has proven challenging, not least due to the diver...

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Main Authors: Eleanor K. Greenwood, David R. Brown
Format: Article
Language:English
Published: MDPI AG 2021-04-01
Series:International Journal of Molecular Sciences
Subjects:
Online Access:https://www.mdpi.com/1422-0067/22/9/4402
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author Eleanor K. Greenwood
David R. Brown
author_facet Eleanor K. Greenwood
David R. Brown
author_sort Eleanor K. Greenwood
collection DOAJ
description Ageing represents the single biggest risk factor for development of neurodegenerative disease. Despite being such long-lived cells, microglia have been relatively understudied for their role in the ageing process. Reliably identifying aged microglia has proven challenging, not least due to the diversity of cell populations, and the limitations of available models, further complicated by differences between human and rodent cells. Consequently, the literature contains multiple descriptions and categorisations of microglia with neurotoxic phenotypes, including senescence, without any unifying markers. The role of microglia in brain homeostasis, particularly iron storage and metabolism, may provide a key to reliable identification.
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spelling doaj.art-11f5c542d0f842e987155b5439e7b0582023-11-21T16:45:17ZengMDPI AGInternational Journal of Molecular Sciences1661-65961422-00672021-04-01229440210.3390/ijms22094402Senescent Microglia: The Key to the Ageing Brain?Eleanor K. Greenwood0David R. Brown1Department of Biology and Biochemistry, University of Bath, Bath BA2 7AY, UKDepartment of Biology and Biochemistry, University of Bath, Bath BA2 7AY, UKAgeing represents the single biggest risk factor for development of neurodegenerative disease. Despite being such long-lived cells, microglia have been relatively understudied for their role in the ageing process. Reliably identifying aged microglia has proven challenging, not least due to the diversity of cell populations, and the limitations of available models, further complicated by differences between human and rodent cells. Consequently, the literature contains multiple descriptions and categorisations of microglia with neurotoxic phenotypes, including senescence, without any unifying markers. The role of microglia in brain homeostasis, particularly iron storage and metabolism, may provide a key to reliable identification.https://www.mdpi.com/1422-0067/22/9/4402microgliasenescenceironageingneurodegenerationSenescence Associated Secretory Phenotype
spellingShingle Eleanor K. Greenwood
David R. Brown
Senescent Microglia: The Key to the Ageing Brain?
International Journal of Molecular Sciences
microglia
senescence
iron
ageing
neurodegeneration
Senescence Associated Secretory Phenotype
title Senescent Microglia: The Key to the Ageing Brain?
title_full Senescent Microglia: The Key to the Ageing Brain?
title_fullStr Senescent Microglia: The Key to the Ageing Brain?
title_full_unstemmed Senescent Microglia: The Key to the Ageing Brain?
title_short Senescent Microglia: The Key to the Ageing Brain?
title_sort senescent microglia the key to the ageing brain
topic microglia
senescence
iron
ageing
neurodegeneration
Senescence Associated Secretory Phenotype
url https://www.mdpi.com/1422-0067/22/9/4402
work_keys_str_mv AT eleanorkgreenwood senescentmicrogliathekeytotheageingbrain
AT davidrbrown senescentmicrogliathekeytotheageingbrain