Publications associées à Caloric restriction, SIRT1 and longevity

Identifying genetic and dietary modulators of metabolic disorders using systems genetics

Long-term consumption of lipid-rich foods can contribute to common metabolic diseases and systemic low-grade inflammation. However, dietary responses and the development of non-communicable diseases are shaped by genetic factors and gene-by-environment int ...

EPFL2023

AMP-activated Protein Kinase (AMPK): New molecular insights and novel downstream targets

Katyayanee Neopane

AMP-activated Protein Kinase (AMPK) is a central regulator of energy homeostasis and a promising drug target for metabolic disorders. It exists as complexes of three subunits, a catalytic alpha, and two regulatory beta and gamma subunits. The regulation of ...

EPFL2022

Reduced ech-6 expression attenuates fat-induced lifespan shortening in C. elegans

Richardus Houtkooper, Wen Gao, Yuan Liu

Deregulated energy homeostasis represents a hallmark of aging and results from complex gene-by-environment interactions. Here, we discovered that reducing the expression of the gene ech-6 encoding enoyl-CoA hydratase remitted fat diet-induced deleterious e ...

Nature Portfolio2022

NAD(+) homeostasis in health and disease

Elena Katsyuba, Johan Auwerx, Mario Romani, Dina Hofer

The conceptual evolution of nicotinamide adenine dinucleotide (NAD(+)) from being seen as a simple metabolic cofactor to a pivotal cosubstrate for proteins regulating metabolism and longevity, including the sirtuin family of protein deacylases, has led to ...

2020

Modulating NAD(+) metabolism, from bench to bedside

Elena Katsyuba, Johan Auwerx

Discovered in the beginning of the 20(th) century, nicotinamide adenine dinucleotide (NAD(+)) has evolved from a simple oxidoreductase cofactor to being an essential cosubstrate for a wide range of regulatory proteins that include the sirtuin family of NAD ...

Wiley2017

Sexual dimorphism in hepatic lipids is associated with the evolution of metabolic status in mice

Rolf Gruetter, Marc Moniatte, Hongxia Lei, Jonathan Paz Montoya, Ana Francisca Leal Silva Soares

Ectopic lipid accumulation in the liver is implicated in metabolic disease in an age- and sex-dependent manner. The role of hepatic lipids has been well established within the scope of metabolic insults in mice, but has been insufficiently characterized un ...

Wiley-Blackwell2017

Dietary restriction and Sirtuin 1 in metabolic health: connections and divergences

Carlos Canto Alvarez

Aging is the major risk factor for a constellation of multifactorial diseases, including insulin resistance, diabetes and cardiovascular complications. Dietary restriction has been shown to delay or prevent the manifestation of age-related health decline, ...

Cambridge Univ Press2016

NRK1 controls nicotinamide mononucleotide and nicotinamide riboside metabolism in mammalian cells

Johan Auwerx, Carlos Canto Alvarez, Joanna Ratajczak

NAD(+) is a vital redox cofactor and a substrate required for activity of various enzyme families, including sirtuins and poly(ADP-ribose) polymerases. Supplementation with NAD(+) precursors, such as nicotinamide mononucleotide (NMN) or nicotinamide ribosi ...

Nature Publishing Group2016

Metabolic Disturbances in Diseases with Neurological Involvement

Degeneration of specific neuronal populations and progressive nervous system dysfunction characterize neurodegenerative diseases, including Alzheimer's disease and Parkinson's disease. These findings are also reported in inherited diseases such as phenylke ...

Int Soc Aging & Disease2014

Mitonuclear protein imbalance as a conserved longevity mechanism

Graham Knott, Elena Katsyuba, Johan Auwerx, Richardus Houtkooper, Norman Lionel Moullan, Dongryeol Ryu, Laurent Mouchiroud

Longevity is regulated by a network of closely linked metabolic systems. We used a combination of mouse population genetics and RNA interference in Caenorhabditis elegans to identify mitochondrial ribosomal protein S5 (Mrps5) and other mitochondrial riboso ...

Nature Publishing Group2013

In vivo metabolic studies in skeletal and cardiac muscle using ¹³C magnetic resonance spectroscopy

Josefina Adriana Maria Bastiaansen

Cardiac and skeletal muscle function relies on a continuous energy production via fatty acid metabolism and mitochondrial oxidation of pyruvate, with a fine balance between substrate delivery and utilization. Changes in metabolism are increasingly being im ...

EPFL2013

The journey of resveratrol from yeast to human

Johan Auwerx

The natural polyphenolic compound resveratrol was first discovered in the 1940s. In the recent years, this compound received renewed interest as several findings implicated resveratrol as a potent SIRT1 activator capable of mimicking the effects of calorie ...

2012

Calorie Restriction-like Effects of 30 Days of Resveratrol Supplementation on Energy Metabolism and Metabolic Profile in Obese Humans

Johan Auwerx, Richardus Houtkooper, Dongryeol Ryu

Resveratrol is a natural compound that affects energy metabolism and mitochondrial function and serves as a calorie restriction mimetic, at least in animal models of obesity. Here, we treated 11 healthy, obese men with placebo and 150 mg/day resveratrol (r ...

Cell Press2011

PGC-1alpha, SIRT1 and AMPK, an energy sensing network that controls energy expenditure

Johan Auwerx, Carlos Canto Alvarez

PURPOSE OF REVIEW: Peroxisome proliferator-activated receptor gamma coactivator-1-alpha (PGC-1alpha) has been extensively described as a master regulator of mitochondrial biogenesis. However, PGC-1alpha activity is not constant and can be finely tuned in r ...

2009

The Pro12Ala PPARgamma2 variant determines metabolism at the gene-environment interface

Johan Auwerx

The metabolic impact of the common peroxisome proliferator-activated receptor gamma isoform 2 (PPARgamma2) variant Pro12Ala in human populations has been widely debated. We demonstrate, using a Pro12Ala knockin model, that on chow diet, Ala/Ala mice are le ...

Cell Press2009