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Long-term treatment with senolytic drugs Dasatinib and Quercetin ameliorates age-dependent intervertebral disc degeneration in mice
Nat Commun. 2021 Sep 3;12(1):5213. doi: 10.1038/s41467-021-25453-2.
Emanuel J Novais 1 2 3 4, Victoria A Tran 1, Shira N Johnston 1 2, Kayla R Darris 5 6, Alex J Roupas 5 6, Garrett A Sessions 5 6, Irving M Shapiro 1 2, Brian O Diekman 5 6, Makarand V Risbud 7 8
Abstract:
Intervertebral disc degeneration is highly prevalent within the elderly population and is a leading cause of chronic back pain and disability. Due to the link between disc degeneration and senescence, we explored the ability of the Dasatinib and Quercetin drug combination (D + Q) to prevent an age-dependent progression of disc degeneration in mice. We treated C57BL/6 mice beginning at 6, 14, and 18 months of age, and analyzed them at 23 months of age. Interestingly, 6- and 14-month D + Q cohorts show lower incidences of degeneration, and the treatment results in a significant decrease in senescence markers p16INK4a, p19ARF, and SASP molecules IL-6 and MMP13. Treatment also preserves cell viability, phenotype, and matrix content. Although transcriptomic analysis shows disc compartment-specific effects of the treatment, cell death and cytokine response pathways are commonly modulated across tissue types. Results suggest that senolytics may provide an attractive strategy to mitigating age-dependent disc degeneration.
PMID: 34480023
Free Full-Text: https://www.nature.com/articles/s41467-021-25453-2
Tags: dasatinib, intervertebral discs, mice, quercetin, senolytics