Birkisdóttir, María Björk and Van’t Sant, Lisanne J. and Brandt, Renata M. C. and Barnhoorn, Sander and Hoeijmakers, Jan H. J. and Vermeij, Wilbert P. and Jaarsma, Dick (2023) Purkinje-cell-specific DNA repair-deficient mice reveal that dietary restriction protects neurons by cell-intrinsic preservation of genomic health. Frontiers in Aging Neuroscience, 14. ISSN 1663-4365
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Abstract
Dietary restriction (DR) is a universal anti-aging intervention, which reduces age-related nervous system pathologies and neurological decline. The degree to which the neuroprotective effect of DR operates by attenuating cell intrinsic degradative processes rather than influencing non-cell autonomous factors such as glial and vascular health or systemic inflammatory status is incompletely understood. Following up on our finding that DR has a remarkably large beneficial effect on nervous system pathology in whole-body DNA repair-deficient progeroid mice, we show here that DR also exerts strong neuroprotection in mouse models in which a single neuronal cell type, i.e., cerebellar Purkinje cells, experience genotoxic stress and consequent premature aging-like dysfunction. Purkinje cell specific hypomorphic and knock-out ERCC1 mice on DR retained 40 and 25% more neurons, respectively, with equal protection against P53 activation, and alike results from whole-body ERCC1-deficient mice. Our findings show that DR strongly reduces Purkinje cell death in our Purkinje cell-specific accelerated aging mouse model, indicating that DR protects Purkinje cells from intrinsic DNA-damage-driven neurodegeneration.
Item Type: | Article |
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Subjects: | OA Library Press > Medical Science |
Depositing User: | Unnamed user with email support@oalibrarypress.com |
Date Deposited: | 15 Apr 2023 08:10 |
Last Modified: | 23 May 2024 06:39 |
URI: | http://archive.submissionwrite.com/id/eprint/650 |