RT Journal Article
T1 Coenzyme Q10 modulates sulfide metabolism and links the mitochondrial respiratory chain to pathways associated to one carbon metabolism.
A1 Gonzalez-GarcIa, Pilar
A1 Hidalgo-Gutierrez, Agustin
A1 Mascaraque, Cristina
A1 Barriocanal-Casado, Eliana
A1 Bakkali, Mohammed
A1 Ziosi, Marcello
A1 Abdihankyzy, Ussipbek Botagoz
A1 Sanchez-Hernandez, Sabina
A1 Escames, Germaine
A1 Prokisch, Holger
A1 Martin, Francisco
A1 Quinzii, Catarina M
A1 Lopez, Luis C
AB Abnormalities of one carbon, glutathione and sulfide metabolisms have recently emerged as novel pathomechanisms in diseases with mitochondrial dysfunction. However, the mechanisms underlying these abnormalities are not clear. Also, we recently showed that sulfide oxidation is impaired in Coenzyme Q10 (CoQ10) deficiency. This finding leads us to hypothesize that the therapeutic effects of CoQ10, frequently administered to patients with primary or secondary mitochondrial dysfunction, might be due to its function as cofactor for sulfide:quinone oxidoreductase (SQOR), the first enzyme in the sulfide oxidation pathway. Here, using biased and unbiased approaches, we show that supraphysiological levels of CoQ10 induces an increase in the expression of SQOR in skin fibroblasts from control subjects and patients with mutations in Complex I subunits genes or CoQ biosynthetic genes. This increase of SQOR induces the downregulation of the cystathionine β-synthase and cystathionine γ-lyase, two enzymes of the transsulfuration pathway, the subsequent downregulation of serine biosynthesis and the adaptation of other sulfide linked pathways, such as folate cycle, nucleotides metabolism and glutathione system. These metabolic changes are independent of the presence of sulfur aminoacids, are confirmed in mouse models, and are recapitulated by overexpression of SQOR, further proving that the metabolic effects of CoQ10 supplementation are mediated by the overexpression of SQOR. Our results contribute to a better understanding of how sulfide metabolism is integrated in one carbon metabolism and may explain some of the benefits of CoQ10 supplementation observed in mitochondrial diseases.
PB Oxford University Press
YR 2020
FD 2020-09-25
LK http://hdl.handle.net/10668/16314
UL http://hdl.handle.net/10668/16314
LA en
NO González-García P, Hidalgo-Gutiérrez A, Mascaraque C, Barriocanal-Casado E, Bakkali M, Ziosi M, et al. Coenzyme Q10 modulates sulfide metabolism and links the mitochondrial respiratory chain to pathways associated to one carbon metabolism. Hum Mol Genet. 2020 Nov 25;29(19):3296-3311.
DS RISalud
RD Apr 15, 2025