Publications by Joanna Ratajczak

Endogenous nicotinamide riboside metabolism protects against diet-induced liver damage

Carlos Canto Alvarez, Sofia Moco, Joanna Ratajczak, Miriam Valera Alberni

Supplementation with the NAD(+) precursor nicotinamide riboside (NR) ameliorates and prevents a broad array of metabolic and aging disorders in mice. However, little is known about the physiological role of endogenous NR metabolism. We have previously show ...

Nature Research2019

The NAD-Booster Nicotinamide Riboside Potently Stimulates Hematopoiesis through Increased Mitochondrial Clearance

Matthias Lütolf, Yannick Lionel Yersin, Vincent Trachsel, Bart Deplancke, Nicola Vannini, Johan Auwerx, Pedro Romero, Carlos Canto Alvarez, Martin Ehrbar, Mukul Girotra, Aurélien Laurent Jean-Charles Oggier, Dongryeol Ryu, Eija Riitta Pirinen, Olaia Maria Naveiras Torres-Quiroga, Pernille Yde Rainer, Gennady Nikitin, Vasco Ledebur de Antas de Campos, Joanna Ratajczak, Loïc Tauzin, Josefine Catharina Pedersen Tratwal, Federico Sizzano, George Coukos, Sonja Giger, Shanti Rojas-Sutterlin, Yang Li, Simone Ragusa

It has been recently shown that increased oxidative phosphorylation, as reflected by increased mitochondrial activity, together with impairment of the mitochondrial stress response, can severely compromise hematopoietic stem cell (HSC) regeneration. Here w ...

CELL PRESS2019

The NAD plus Salvage Pathway Potently Stimulates Hematopoiesis through Increased Mitochondrial Clearance and Asymmetric Division

Matthias Lütolf, Yannick Lionel Yersin, Bart Deplancke, Nicola Vannini, Carlos Canto Alvarez, Martin Ehrbar, Mukul Girotra, Aurélien Laurent Jean-Charles Oggier, Dongryeol Ryu, Eija Riitta Pirinen, Olaia Maria Naveiras Torres-Quiroga, Pernille Yde Rainer, Gennady Nikitin, Vasco Ledebur de Antas de Campos, Joanna Ratajczak, Loïc Tauzin, Josefine Catharina Pedersen Tratwal, Federico Sizzano, George Coukos, Sonja Giger, Shanti Rojas-Sutterlin, Yang Li, Simone Ragusa

AMER SOC HEMATOLOGY2018

Mfn2 is critical for brown adipose tissue thermogenic function

Carlos Canto Alvarez, Joanna Ratajczak, Miriam Valera Alberni

Mitochondrial fusion and fission events, collectively known as mitochondrial dynamics, act as quality control mechanisms to ensure mitochondrial function and fine-tune cellular bioenergetics. Defective mitofusin 2 (Mfn2) expression and enhanced mitochondri ...

Wiley2017

Circadian and Feeding Rhythms Orchestrate the Diurnal Liver Acetylome

Felix Naef, Loïc Dayon, Carlos Canto Alvarez, Martin Kussmann, Jingkui Wang, Sebastiano Collino, Florian Atger, Daniel Alain Dominique Marie Mauvoisin, Frédéric Bruno Martin Gachon, Joanna Ratajczak

Lysine acetylation is involved in various biological processes and is considered a key reversible post-translational modification in the regulation of gene expression, enzyme activity, and subcellular localization. This post-translational modification is t ...

Elsevier2017

Nicotinamide riboside kinases display redundancy in mediating nicotinamide mononucleotide and nicotinamide riboside metabolism in skeletal muscle cells

Carlos Canto Alvarez, Joanna Ratajczak

Objective: Augmenting nicotinamide adenine dinucleotide (NAD(+)) availability may protect skeletal muscle from age-related metabolic decline. Dietary supplementation of NAD(+) precursors nicotinamide mononucleotide (NMN) and nicotinamide riboside (NR) appe ...

Elsevier Science Bv2017

The role of nicotinamide riboside kinases in mammalian NAD⁺ metabolism

Joanna Ratajczak

NAD+ has emerged as a central metabolic node and an important co-substrate for the activity of various enzymes, including the protein deacetylase SIRT1. Different strategies to increase NAD+ bioavailability have been shown to boost SIRT1 activity, which re ...

EPFL2017

Mfn1 Deficiency in the Liver Protects Against Diet-Induced Insulin Resistance and Enhances the Hypoglycemic Effect of Metformin

Patrick Descombes, Carlos Canto Alvarez, Richardus Houtkooper, Sylviane Métairon, Joanna Ratajczak, Catherine Maclachlan, Wen Gao

Mitochondrial function can be influenced by mitochondrial shape and connectivity with other cellular organelles through fusion and fission processes. Disturbances in mitochondrial architecture and mitochondrial fusion related genes are observed in situatio ...

American Diabetes Association2016

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

SIRT1 enhances glucose tolerance by potentiating brown adipose tissue function

Carlos Canto Alvarez, Pablo Jose Fernandez Marcos, Joanna Ratajczak

Objective: SIRT1 has been proposed to be a key signaling node linking changes in energy metabolism to transcriptional adaptations. Although SIRT1 overexpression is protective against diverse metabolic complications, especially in response to high-fat diets ...

Elsevier Science Bv2015