DNA Methylation and Transcriptome Profiling Reveal the Role of the Antioxidant Pathway and Lipid Metabolism in Skin Color Formation

Overview

Journal Antioxidants (Basel)

Date 2025 Jan 25

PMID 39857428

Authors

Yang Liu

Linna Wang

Zhentong Li

Linlin Li

Tangtang Ding

Shuai Chen

Pengfei Duan

Xinyi Wang

Yishu Qiu

Xiaoyu Ding

Yongsheng Tian

Affiliations

Soon will be listed here.

Abstract

Leopard coral grouper (), possessing a distinct red body color, is an important species in commercial markets; however, the high ratio of black individuals under intensive cultivation has limited the commercial value of the species. To dissect the regulatory mechanisms underlying the red skin trait in , gene expression and DNA methylation modifications were compared between red and black skin tissues after astaxanthin treatment. Astaxanthin effectively increased the redness value a* and body weight. Multi-omics analyses revealed the crucial roles of pathways related to antioxidants and lipid metabolism, particularly "Tyrosine metabolism", "Melanogenesis", "Fatty acid metabolism", "Fatty acid elongation", and "Biosynthesis of unsaturated acids", in red skin coloration. A molecular network for the regulation of red skin coloration in was constructed, and , , , , , , , , , , , and were identified as key genes. Notably, , , and were negatively regulated by differential DNA methylation. Our results provide new insight into the molecular and epigenetic mechanisms of body color variation, representing a significant step towards breeding for the red skin trait in .

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