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Age-related declines in α-Klotho drive progenitor cell mitochondrial dysfunction and impaired muscle regeneration.

Publication ,  Journal Article
Sahu, A; Mamiya, H; Shinde, SN; Cheikhi, A; Winter, LL; Vo, NV; Stolz, D; Roginskaya, V; Tang, WY; St Croix, C; Sanders, LH; Franti, M ...
Published in: Nat Commun
November 19, 2018

While young muscle is capable of restoring the original architecture of damaged myofibers, aged muscle displays a markedly reduced regeneration. We show that expression of the "anti-aging" protein, α-Klotho, is up-regulated within young injured muscle as a result of transient Klotho promoter demethylation. However, epigenetic control of the Klotho promoter is lost with aging. Genetic inhibition of α-Klotho in vivo disrupted muscle progenitor cell (MPC) lineage progression and impaired myofiber regeneration, revealing a critical role for α-Klotho in the regenerative cascade. Genetic silencing of Klotho in young MPCs drove mitochondrial DNA (mtDNA) damage and decreased cellular bioenergetics. Conversely, supplementation with α-Klotho restored mtDNA integrity and bioenergetics of aged MPCs to youthful levels in vitro and enhanced functional regeneration of aged muscle in vivo in a temporally-dependent manner. These studies identify a role for α-Klotho in the regulation of MPC mitochondrial function and implicate α-Klotho declines as a driver of impaired muscle regeneration with age.

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Published In

Nat Commun

DOI

EISSN

2041-1723

Publication Date

November 19, 2018

Volume

9

Issue

1

Start / End Page

4859

Location

England

Related Subject Headings

  • Stem Cells
  • Signal Transduction
  • Regeneration
  • Receptors, Cell Surface
  • RNA, Small Interfering
  • Promoter Regions, Genetic
  • Myoblasts
  • Muscle, Skeletal
  • Mitochondria
  • Mice, Knockout
 

Citation

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Chicago
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Sahu, A., Mamiya, H., Shinde, S. N., Cheikhi, A., Winter, L. L., Vo, N. V., … Ambrosio, F. (2018). Age-related declines in α-Klotho drive progenitor cell mitochondrial dysfunction and impaired muscle regeneration. Nat Commun, 9(1), 4859. https://doi.org/10.1038/s41467-018-07253-3
Sahu, A., H. Mamiya, S. N. Shinde, A. Cheikhi, L. L. Winter, N. V. Vo, D. Stolz, et al. “Age-related declines in α-Klotho drive progenitor cell mitochondrial dysfunction and impaired muscle regeneration.Nat Commun 9, no. 1 (November 19, 2018): 4859. https://doi.org/10.1038/s41467-018-07253-3.
Sahu A, Mamiya H, Shinde SN, Cheikhi A, Winter LL, Vo NV, et al. Age-related declines in α-Klotho drive progenitor cell mitochondrial dysfunction and impaired muscle regeneration. Nat Commun. 2018 Nov 19;9(1):4859.
Sahu, A., et al. “Age-related declines in α-Klotho drive progenitor cell mitochondrial dysfunction and impaired muscle regeneration.Nat Commun, vol. 9, no. 1, Nov. 2018, p. 4859. Pubmed, doi:10.1038/s41467-018-07253-3.
Sahu A, Mamiya H, Shinde SN, Cheikhi A, Winter LL, Vo NV, Stolz D, Roginskaya V, Tang WY, St Croix C, Sanders LH, Franti M, Van Houten B, Rando TA, Barchowsky A, Ambrosio F. Age-related declines in α-Klotho drive progenitor cell mitochondrial dysfunction and impaired muscle regeneration. Nat Commun. 2018 Nov 19;9(1):4859.

Published In

Nat Commun

DOI

EISSN

2041-1723

Publication Date

November 19, 2018

Volume

9

Issue

1

Start / End Page

4859

Location

England

Related Subject Headings

  • Stem Cells
  • Signal Transduction
  • Regeneration
  • Receptors, Cell Surface
  • RNA, Small Interfering
  • Promoter Regions, Genetic
  • Myoblasts
  • Muscle, Skeletal
  • Mitochondria
  • Mice, Knockout