Ski3/TTC37 deficiency associated with trichohepatoenteric syndrome causes mitochondrial dysfunction in Drosophila
Open Access
- 15 April 2020
- journal article
- research article
- Published by Wiley in FEBS Letters
- Vol. 594 (13), 2168-2181
- https://doi.org/10.1002/1873-3468.13792
Abstract
Tetratricopeptide repeat protein 37 (TTC37) is a causative gene of trichohepatoenteric syndrome (THES). However, little is known about the pathogenesis of this disease. Here, we characterize the phenotype of a Drosophila model in which ski3, a homolog of TTC37, is disrupted. The mutant flies are pupal lethal, and the pupal lethality is partially rescued by transgenic expression of wild type ski3 or human TTC37. The mutant larvae show growth retardation, heart arrhythmia, triacylglycerol accumulation, and aberrant metabolism of glycolysis and the TCA cycle. Moreover, mitochondrial membrane potential and respiratory chain complex activities are significantly reduced in the mutants. Our results demonstrate that ski3 deficiency causes mitochondrial dysfunction, which may underlie the pathogenesis of THES.Funding Information
- Japan Agency for Medical Research and Development (18ek0109177, 19ek0109273)
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