Cysteine redoxome landscape in the liver of male mice fed a high-fat high-sucrose diet.

ABSTRACT: Reversible cysteine posttranslational modifications serve as a "switch" for protein structure-function dynamics. Herein, we applied a comprehensive strategy to map the cysteine redoxome by pinpointing over 5000 oxidized and reduced cysteine residues in the liver of male mice fed either a normal chow diet or a high-fat/high-sucrose diet (HFHSD). The global and subcellular distribution of oxidized and reduced cysteine residues remained stable across both diet groups, indicating that HFHSD does not induce widespread shifts in cysteine redox equilibrium. Proteomic analyses revealed that HFHSD upregulates proteins involved in genomic stability, lipid detoxification, and energy regulation, while downregulating those linked to detoxification and metabolic flexibility. Notably, 169 cysteine residu

SUBMITTER: Galicia-Medina CM 

PROVIDER: S-EPMC12547247 | biostudies-literature | 2025 Sep

REPOSITORIES: biostudies-literature