Cookies on this website

We use cookies to ensure that we give you the best experience on our website. If you click 'Accept all cookies' we'll assume that you are happy to receive all cookies and you won't see this message again. If you click 'Reject all non-essential cookies' only necessary cookies providing core functionality such as security, network management, and accessibility will be enabled. Click 'Find out more' for information on how to change your cookie settings.

Perturbations in mitochondrial function and homeostasis are pervasive in lysosomal storage diseases, but the underlying mechanisms remain unknown. Here, we report a transcriptional program that represses mitochondrial biogenesis and function in lysosomal storage diseases Niemann-Pick type C (NPC) and acid sphingomyelinase deficiency (ASM), in patient cells and mouse tissues. This mechanism is mediated by the transcription factors KLF2 and ETV1, which are both induced in NPC and ASM patient cells. Mitochondrial biogenesis and function defects in these cells are rescued by the silencing of KLF2 or ETV1. Increased ETV1 expression is regulated by KLF2, while the increase of KLF2 protein levels in NPC and ASM stems from impaired signaling downstream sphingosine-1-phosphate receptor 1 (S1PR1), which normally represses KLF2. In patient cells, S1PR1 is barely detectable at the plasma membrane and thus unable to repress KLF2. This manuscript provides a mechanistic pathway for the prevalent mitochondrial defects in lysosomal storage diseases.Editorial noteThis article has been through an editorial process in which the authors decide how to respond to the issues raised during peer review. The Reviewing Editor's assessment is that all the issues have been addressed (see decision letter).

Original publication

DOI

10.7554/elife.39598

Type

Journal article

Journal

eLife

Publication Date

18/02/2019

Volume

8

Addresses

Institute of Cellular Biochemistry, University Medical Center Goettingen, Goettingen, Germany.

Keywords

Liver, Brain, Mitochondria, Fibroblasts, Animals, Mice, Knockout, Humans, Lysosomal Storage Diseases, Sphingomyelin Phosphodiesterase, Lipids, Intracellular Signaling Peptides and Proteins, Transcription Factors, Cell Respiration, MAP Kinase Signaling System, Transcription, Genetic, Down-Regulation, Up-Regulation, Electron Transport, Genes, Mitochondrial, Niemann-Pick Disease, Type C, Organelle Biogenesis, Niemann-Pick C1 Protein