Renal tubular peroxisomes are dispensable for normal kidney function.

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State: Public
Version: author
License: CC BY 4.0
Serval ID
serval:BIB_E7A0BACF576D
Type
Article: article from journal or magazin.
Collection
Publications
Institution
Title
Renal tubular peroxisomes are dispensable for normal kidney function.
Journal
JCI insight
Author(s)
Ansermet C., Centeno G., Pradervand S., Harmacek D., Garcia A., Daraspe J., Kocherlakota S., Baes M., Bignon Y., Firsov D.
ISSN
2379-3708 (Electronic)
ISSN-L
2379-3708
Publication state
Published
Issued date
22/02/2022
Peer-reviewed
Oui
Volume
7
Number
4
Pages
e155836
Language
english
Notes
Publication types: Journal Article ; Research Support, Non-U.S. Gov't
Publication Status: epublish
Abstract
Peroxisomes are specialized cellular organelles involved in a variety of metabolic processes. In humans, mutations leading to complete loss of peroxisomes cause multiorgan failure (Zellweger's spectrum disorders, ZSD), including renal impairment. However, the (patho)physiological role of peroxisomes in the kidney remains unknown. We addressed the role of peroxisomes in renal function in mice with conditional ablation of peroxisomal biogenesis in the renal tubule (cKO mice). Functional analyses did not reveal any overt kidney phenotype in cKO mice. However, infant male cKO mice had lower body and kidney weights, and adult male cKO mice exhibited substantial reductions in kidney weight and kidney weight/body weight ratio. Stereological analysis showed an increase in mitochondria density in proximal tubule cells of cKO mice. Integrated transcriptome and metabolome analyses revealed profound reprogramming of a number of metabolic pathways, including metabolism of glutathione and biosynthesis/biotransformation of several major classes of lipids. Although this analysis suggested compensated oxidative stress, challenge with high-fat feeding did not induce significant renal impairments in cKO mice. We demonstrate that renal tubular peroxisomes are dispensable for normal renal function. Our data also suggest that renal impairments in patients with ZSD are of extrarenal origin.
Keywords
Genetic diseases, Nephrology
Pubmed
Web of science
Open Access
Yes
Create date
28/02/2022 9:41
Last modification date
16/08/2022 5:41
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