NAD(+) Replenishment Improves Lifespan and Healthspan in Ataxia Telangiectasia Models via Mitophagy and DNA Repair
Research output: Contribution to journal › Journal article › Research › peer-review
Standard
NAD(+) Replenishment Improves Lifespan and Healthspan in Ataxia Telangiectasia Models via Mitophagy and DNA Repair. / Fang, Evandro Fei; Kassahun, Henok; Croteau, Deborah L; Scheibye-Knudsen, Morten; Marosi, Krisztina; Lu, Huiming; Shamanna, Raghavendra A; Kalyanasundaram, Sumana; Bollineni, Ravi Chand; Wilson, Mark A; Iser, Wendy B; Wollman, Bradley N; Morevati, Marya; Li, Jun; Kerr, Jesse S; Lu, Qiping; Waltz, Tyler B; Tian, Jane; Sinclair, David A; Mattson, Mark P; Nilsen, Hilde; Bohr, Vilhelm A.
In: Cell Metabolism, Vol. 24, No. 4, 11.10.2016, p. 566-581.Research output: Contribution to journal › Journal article › Research › peer-review
Harvard
APA
Vancouver
Author
Bibtex
}
RIS
TY - JOUR
T1 - NAD(+) Replenishment Improves Lifespan and Healthspan in Ataxia Telangiectasia Models via Mitophagy and DNA Repair
AU - Fang, Evandro Fei
AU - Kassahun, Henok
AU - Croteau, Deborah L
AU - Scheibye-Knudsen, Morten
AU - Marosi, Krisztina
AU - Lu, Huiming
AU - Shamanna, Raghavendra A
AU - Kalyanasundaram, Sumana
AU - Bollineni, Ravi Chand
AU - Wilson, Mark A
AU - Iser, Wendy B
AU - Wollman, Bradley N
AU - Morevati, Marya
AU - Li, Jun
AU - Kerr, Jesse S
AU - Lu, Qiping
AU - Waltz, Tyler B
AU - Tian, Jane
AU - Sinclair, David A
AU - Mattson, Mark P
AU - Nilsen, Hilde
AU - Bohr, Vilhelm A
N1 - Published by Elsevier Inc.
PY - 2016/10/11
Y1 - 2016/10/11
N2 - Ataxia telangiectasia (A-T) is a rare autosomal recessive disease characterized by progressive neurodegeneration and cerebellar ataxia. A-T is causally linked to defects in ATM, a master regulator of the response to and repair of DNA double-strand breaks. The molecular basis of cerebellar atrophy and neurodegeneration in A-T patients is unclear. Here we report and examine the significance of increased PARylation, low NAD(+), and mitochondrial dysfunction in ATM-deficient neurons, mice, and worms. Treatments that replenish intracellular NAD(+) reduce the severity of A-T neuropathology, normalize neuromuscular function, delay memory loss, and extend lifespan in both animal models. Mechanistically, treatments that increase intracellular NAD(+) also stimulate neuronal DNA repair and improve mitochondrial quality via mitophagy. This work links two major theories on aging, DNA damage accumulation, and mitochondrial dysfunction through nuclear DNA damage-induced nuclear-mitochondrial signaling, and demonstrates that they are important pathophysiological determinants in premature aging of A-T, pointing to therapeutic interventions.
AB - Ataxia telangiectasia (A-T) is a rare autosomal recessive disease characterized by progressive neurodegeneration and cerebellar ataxia. A-T is causally linked to defects in ATM, a master regulator of the response to and repair of DNA double-strand breaks. The molecular basis of cerebellar atrophy and neurodegeneration in A-T patients is unclear. Here we report and examine the significance of increased PARylation, low NAD(+), and mitochondrial dysfunction in ATM-deficient neurons, mice, and worms. Treatments that replenish intracellular NAD(+) reduce the severity of A-T neuropathology, normalize neuromuscular function, delay memory loss, and extend lifespan in both animal models. Mechanistically, treatments that increase intracellular NAD(+) also stimulate neuronal DNA repair and improve mitochondrial quality via mitophagy. This work links two major theories on aging, DNA damage accumulation, and mitochondrial dysfunction through nuclear DNA damage-induced nuclear-mitochondrial signaling, and demonstrates that they are important pathophysiological determinants in premature aging of A-T, pointing to therapeutic interventions.
U2 - 10.1016/j.cmet.2016.09.004
DO - 10.1016/j.cmet.2016.09.004
M3 - Journal article
C2 - 27732836
VL - 24
SP - 566
EP - 581
JO - Cell Metabolism
JF - Cell Metabolism
SN - 1550-4131
IS - 4
ER -
ID: 169440364