PGC-1α is a male-specific disease modifier of human and experimental amyotrophic lateral sclerosis.

Abstract:

:Amyotrophic lateral sclerosis (ALS) is a devastating, adult-onset neurodegenerative disorder of the upper and lower motor systems. It leads to paresis, muscle wasting and inevitably to death, typically within 3-5 years. However, disease onset and survival vary considerably ranging in extreme cases from a few months to several decades. The genetic and environmental factors underlying this variability are of great interest as potential therapeutic targets. In ALS, men are affected more often and have an earlier age of onset than women. This gender difference is recapitulated in transgenic rodent models, but no underlying mechanism has been elucidated. Here we report that SNPs in the brain-specific promoter region of the transcriptional co-activator PGC-1α, a master regulator of metabolism, modulate age of onset and survival in two large and independent ALS populations and this occurs in a strictly male-specific manner. In complementary animal studies, we show that deficiency of full-length (FL) Pgc-1α leads to a significantly earlier age of onset and a borderline shortened survival in male, but not in female ALS-transgenic mice. In the animal model, FL Pgc-1α-loss is associated with reduced mRNA levels of the trophic factor Vegf-A in males, but not in females. In summary, we indentify PGC-1α as a novel and clinically relevant disease modifier of human and experimental ALS and report a sex-dependent effect of PGC-1α in this neurodegenerative disorder.

journal_name

Hum Mol Genet

journal_title

Human molecular genetics

authors

Eschbach J,Schwalenstöcker B,Soyal SM,Bayer H,Wiesner D,Akimoto C,Nilsson AC,Birve A,Meyer T,Dupuis L,Danzer KM,Andersen PM,Witting A,Ludolph AC,Patsch W,Weydt P

doi

10.1093/hmg/ddt202

subject

Has Abstract

pub_date

2013-09-01 00:00:00

pages

3477-84

issue

17

eissn

0964-6906

issn

1460-2083

pii

ddt202

journal_volume

22

pub_type

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