Imperial College London
Professor Dominic Withers

ProfessorDominicWithers

Faculty of Medicine, Institute of Clinical Sciences

Clinical Chair in Diabetes & Endocrinology
 
 
 
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Contact

 

d.withers

 
 
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Location

 

Hammersmith HospitalHammersmith Campus

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Summary

 

Publications

Citation

BibTex format

@article{Liao:2017:10.1038/celldisc.2017.39,
author = {Liao, C-Y and Anderson, SS and Chicoine, NH and Mayfield, JR and Garret, BJ and Kwok, CS and Academia, EC and Hsu, Y-M and Miller, DM and Bair, AM and Wilson, JA and Tannady, G and Stewart, EM and Adamson, SS and Wang, J and Withers, DJ and Kennedy, BK},
doi = {10.1038/celldisc.2017.39},
journal = {Cell Discovery},
title = {Evidence that S6K1, but not 4E-BP1, mediates skeletal muscle pathology associated with loss of A-type lamins},
url = {http://dx.doi.org/10.1038/celldisc.2017.39},
volume = {3},
year = {2017}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - The mechanistic target of rapamycin (mTOR) signaling pathway plays a central role in aging and a number of different disease states. Rapamycin, which suppresses activity of the mTOR complex 1 (mTORC1), shows preclinical (and sometimes clinical) efficacy in a number of disease models. Among these are Lmna−/− mice, which serve as a mouse model for dystrophy-associated laminopathies. To confirm that elevated mTORC1 signaling is responsible for the pathology manifested in Lmna−/− mice and to decipher downstream genetic mechanisms underlying the benefits of rapamycin, we tested in Lmna−/− mice whether survival could be extended and disease pathology suppressed either by reduced levels of S6K1 or enhanced levels of 4E-BP1, two canonical mTORC1 substrates. Global heterozygosity for S6K1 ubiquitously extended lifespan of Lmna−/− mice (Lmna−/− S6K1+/− mice). This life extension is due to improving muscle, but not heart or adipose, function, consistent with the observation that genetic ablation of S6K1 specifically in muscle tissue also extended survival of Lmna−/− mice. In contrast, whole-body overexpression of 4E-BP1 shortened the survival of Lmna−/− mice, likely by accelerating lipolysis. Thus, rapamycin-mediated lifespan extension in Lmna−/− mice is in part due to the improvement of skeletal muscle function and can be phenocopied by reduced S6K1 activity, but not 4E-BP1 activation.
AU  - Liao,C-Y
AU  - Anderson,SS
AU  - Chicoine,NH
AU  - Mayfield,JR
AU  - Garret,BJ
AU  - Kwok,CS
AU  - Academia,EC
AU  - Hsu,Y-M
AU  - Miller,DM
AU  - Bair,AM
AU  - Wilson,JA
AU  - Tannady,G
AU  - Stewart,EM
AU  - Adamson,SS
AU  - Wang,J
AU  - Withers,DJ
AU  - Kennedy,BK
DO  - 10.1038/celldisc.2017.39
PY  - 2017///
SN  - 2056-5968
TI  - Evidence that S6K1, but not 4E-BP1, mediates skeletal muscle pathology associated with loss of A-type lamins
T2  - Cell Discovery
UR  - http://dx.doi.org/10.1038/celldisc.2017.39
UR  - http://hdl.handle.net/10044/1/54238
VL  - 3
ER  -
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