CLP1 links tRNA metabolism to progressive motor-neuron loss
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CLP1 links tRNA metabolism to progressive motor-neuron loss. / Hanada, Toshikatsu; Weitzer, Stefan; Mair, Barbara; Bernreuther, Christian; Wainger, Brian J; Ichida, Justin; Hanada, Reiko; Orthofer, Michael; Cronin, Shane J; Komnenovic, Vukoslav; Minis, Adi; Sato, Fuminori; Mimata, Hiromitsu; Yoshimura, Akihiko; Tamir, Ido; Rainer, Johannes; Kofler, Reinhard; Yaron, Avraham; Eggan, Kevin C; Woolf, Clifford J; Glatzel, Markus; Herbst, Ruth; Martinez, Javier; Penninger, Josef M.
In: NATURE, Vol. 495, No. 7442, 28.03.2013, p. 474-80.Research output: SCORING: Contribution to journal › SCORING: Journal article › Research › peer-review
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TY - JOUR
T1 - CLP1 links tRNA metabolism to progressive motor-neuron loss
AU - Hanada, Toshikatsu
AU - Weitzer, Stefan
AU - Mair, Barbara
AU - Bernreuther, Christian
AU - Wainger, Brian J
AU - Ichida, Justin
AU - Hanada, Reiko
AU - Orthofer, Michael
AU - Cronin, Shane J
AU - Komnenovic, Vukoslav
AU - Minis, Adi
AU - Sato, Fuminori
AU - Mimata, Hiromitsu
AU - Yoshimura, Akihiko
AU - Tamir, Ido
AU - Rainer, Johannes
AU - Kofler, Reinhard
AU - Yaron, Avraham
AU - Eggan, Kevin C
AU - Woolf, Clifford J
AU - Glatzel, Markus
AU - Herbst, Ruth
AU - Martinez, Javier
AU - Penninger, Josef M
PY - 2013/3/28
Y1 - 2013/3/28
N2 - CLP1 was the first mammalian RNA kinase to be identified. However, determining its in vivo function has been elusive. Here we generated kinase-dead Clp1 (Clp1(K/K)) mice that show a progressive loss of spinal motor neurons associated with axonal degeneration in the peripheral nerves and denervation of neuromuscular junctions, resulting in impaired motor function, muscle weakness, paralysis and fatal respiratory failure. Transgenic rescue experiments show that CLP1 functions in motor neurons. Mechanistically, loss of CLP1 activity results in accumulation of a novel set of small RNA fragments, derived from aberrant processing of tyrosine pre-transfer RNA. These tRNA fragments sensitize cells to oxidative-stress-induced p53 (also known as TRP53) activation and p53-dependent cell death. Genetic inactivation of p53 rescues Clp1(K/K) mice from the motor neuron loss, muscle denervation and respiratory failure. Our experiments uncover a mechanistic link between tRNA processing, formation of a new RNA species and progressive loss of lower motor neurons regulated by p53.
AB - CLP1 was the first mammalian RNA kinase to be identified. However, determining its in vivo function has been elusive. Here we generated kinase-dead Clp1 (Clp1(K/K)) mice that show a progressive loss of spinal motor neurons associated with axonal degeneration in the peripheral nerves and denervation of neuromuscular junctions, resulting in impaired motor function, muscle weakness, paralysis and fatal respiratory failure. Transgenic rescue experiments show that CLP1 functions in motor neurons. Mechanistically, loss of CLP1 activity results in accumulation of a novel set of small RNA fragments, derived from aberrant processing of tyrosine pre-transfer RNA. These tRNA fragments sensitize cells to oxidative-stress-induced p53 (also known as TRP53) activation and p53-dependent cell death. Genetic inactivation of p53 rescues Clp1(K/K) mice from the motor neuron loss, muscle denervation and respiratory failure. Our experiments uncover a mechanistic link between tRNA processing, formation of a new RNA species and progressive loss of lower motor neurons regulated by p53.
KW - Amyotrophic Lateral Sclerosis
KW - Animals
KW - Animals, Newborn
KW - Axons
KW - Cell Death
KW - Diaphragm
KW - Embryo Loss
KW - Embryo, Mammalian
KW - Exons
KW - Female
KW - Fibroblasts
KW - Male
KW - Mice
KW - Mice, Inbred C57BL
KW - Mice, Knockout
KW - Mice, Transgenic
KW - Motor Neurons
KW - Muscular Atrophy, Spinal
KW - Neuromuscular Diseases
KW - Oxidative Stress
KW - RNA Processing, Post-Transcriptional
KW - RNA, Transfer, Tyr
KW - Respiration
KW - Spinal Nerves
KW - Transcription Factors
KW - Tumor Suppressor Protein p53
KW - Tyrosine
U2 - 10.1038/nature11923
DO - 10.1038/nature11923
M3 - SCORING: Journal article
C2 - 23474986
VL - 495
SP - 474
EP - 480
JO - NATURE
JF - NATURE
SN - 0028-0836
IS - 7442
ER -