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Mitochondrial dysfunctions in barth syndrome
Author(s) -
Ghosh Sagnika,
Iadarola Donna M.,
Ball Writoban Basu,
Gohil Vishal M.
Publication year - 2019
Publication title -
iubmb life
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.132
H-Index - 113
eISSN - 1521-6551
pISSN - 1521-6543
DOI - 10.1002/iub.2018
Subject(s) - cardiolipin , mitochondrion , mitochondrial dna , biology , inner mitochondrial membrane , biogenesis , mitochondrial respiratory chain , mitophagy , microbiology and biotechnology , genetics , biochemistry , chemistry , gene , phospholipid , autophagy , membrane , apoptosis
Barth syndrome (BTHS) is a rare multisystemic genetic disorder caused by mutations in the TAZ gene. TAZ encodes a mitochondrial enzyme that remodels the acyl chain composition of newly synthesized cardiolipin, a phospholipid unique to mitochondrial membranes. The clinical abnormalities observed in BTHS patients are caused by perturbations in various mitochondrial functions that rely on remodeled cardiolipin. However, the contribution of different cardiolipin‐dependent mitochondrial functions to the pathology of BTHS is not fully understood. In this review, we will discuss recent findings from different genetic models of BTHS, including the yeast model of cardiolipin deficiency that has uncovered the specific in vivo roles of cardiolipin in mitochondrial respiratory chain biogenesis, bioenergetics, intermediary metabolism, mitochondrial dynamics, and quality control. We will also describe findings from higher eukaryotic models of BTHS that highlight a link between cardiolipin‐dependent mitochondrial function and its impact on tissue and organ function. © 2019 IUBMB Life, 9999(9999):1–11, 2019