Sexual dimorphism in zebrafish liver proteins and implications for hepatic regeneration and diseases.

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Several of these functions can be affected by sexual dimorphisms with important consequences. In this study we used high-throughput proteomics to identify and quantify proteins involved in sexual dimorphism of the zebrafish liver, as a model for preclinical human research. Additionally, we conducted an extensive literature review to explore potential effects of sex-biased protein abundances on liver regeneration capacity and hepatic diseases. The results showed wide-spread sex-specific differences in proteins involved in carbohydrate, protein, and lipid metabolism. Female livers exhibited higher levels of proteins involved in protein synthesis, while male liver protein abundances were higher in energy-producing biochemical pathways, such as the TCA, β-oxidation, and glycolysis. Furthermore, significant sex differences were observed in proteins related to drug metabolism, which should be considered in toxicological and pharmacological research. Some potential links between sex-biased quantities of some key hepatic proteins and the susceptibility of males to liver diseases, as well as the higher hepatic regenerative capacity in females, were suggested. These findings offer a foundation for future targeted research to facilitate the development of sex-specific therapeutic approaches for liver disorders and regenerative medicine. 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