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001-es BibID:	BIBFORM122377
035-os BibID:	(Scopus)85195096034 (WoS)001257692700001
Első szerző:	Majtan, Tomas
Cím:	Deciphering pathophysiological mechanisms underlying cystathionine beta-synthase-deficient homocystinuria using targeted metabolomics, liver proteomics, sphingolipidomics and analysis of mitochondrial function / Tomas Majtan, Thomas Olsen, Jitka Sokolova, Jakub Krijt, Michaela Křížková, Tomoaki Ida, Tamás Ditrói, Hana Hansikova, Ondrej Vit, Jiri Petrak, Ladislav Kuchař, Warren D. Kruger, Péter Nagy, Takaaki Akaike, Viktor Kožich
Dátum:	2024
ISSN:	2213-2317
Megjegyzések:	Background: Cystathionine beta-synthase (CBS)-deficient homocystinuria (HCU) is an inherited disorder of sulfur amino acid metabolism with varying severity and organ complications, and a limited knowledge about underlying pathophysiological processes. Here we aimed at getting an in-depth insight into disease mechanisms using a transgenic mouse model of HCU (I278T). Methods: We assessed metabolic, proteomic and sphingolipidomic changes, and mitochondrial function in tissues and body fluids of I278T mice and WT controls. Furthermore, we evaluated the efficacy of methionine-restricted diet (MRD) in I278T mice. Results: In WT mice, we observed a distinct tissue/body fluid compartmentalization of metabolites with up to six-orders of magnitude differences in concentrations among various organs. The I278T mice exhibited the anticipated metabolic imbalance with signs of an increased production of hydrogen sulfide and disturbed persulfidation of free aminothiols. HCU resulted in a significant dysregulation of liver proteome affecting biological oxidations, conjugation of compounds, and metabolism of amino acids, vitamins, cofactors and lipids. Liver sphingolipidomics indicated upregulation of the pro-proliferative sphingosine-1-phosphate signaling pathway. Liver mitochondrial function of HCU mice did not seem to be impaired compared to controls. MRD in I278T mice improved metabolic balance in all tissues and substantially reduced dysregulation of liver proteome. Conclusion: The study highlights distinct tissue compartmentalization of sulfur-related metabolites in normal mice, extensive metabolome, proteome and sphingolipidome disruptions in I278T mice, and the efficacy of MRD to alleviate some of the HCU-related biochemical abnormalities.
Tárgyszavak:	Természettudományok Kémiai tudományok idegen nyelvű folyóiratközlemény külföldi lapban folyóiratcikk Cystathionine beta-synthase Homocystinuria Metabolomics Methionine restriction Proteomics
Megjelenés:	Redox Biology. - 73 (2024), p. 1-15. -
További szerzők:	Olsen, Thomas Sokolová, Jitka Krijt, Jakub Křížková, Michaela Ida, Tomoaki Ditrói Tamás (1989-) (vegyész) Hansikova, Hana Vit, Ondrej Petrak, Jiri Kuchař, Ladislav Kruger, Warren D. Nagy Péter (1976-) (vegyész) Akaike, Takaaki Kožich, Viktor
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