Identification of potential geosmin-binding proteins in grass carp gill based on affinity responsive target stability and tandem mass tag proteomics.

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Tác giả: Bing Fu, Huan Han, Kang Li, Yi-Chao Li, Jing-Wei Liu, Li-Ping Liu, Er-Meng Yu, Jun-Ming Zhang

Ngôn ngữ: eng

Ký hiệu phân loại:

Thông tin xuất bản: Netherlands : Ecotoxicology and environmental safety , 2025

Mô tả vật lý:

Bộ sưu tập: NCBI

ID: 731297

The escalating issue of water pollution, especially the accumulation of organic off-flavor pollutants, poses significant challenges. Geosmin, a typical off-flavor compound in aquatic environments, not only compromises the quality of aquatic products but also deters consumers. Its impact extends to aquatic organisms, with current research focusing on dose-response and ecotoxicity, while neglecting the molecular-level study of geosmin-binding proteins. This study employs an integrated approach combing affinity-responsive target stability in vitro, tandem mass tag proteomics in vivo, and molecular docking to identify geosmin-binding proteins in the gill tissue of grass carp (Ctenopharyngodon idella). ARTS analysis identified 56 proteins, predominantly membrane-associated proteins, such as catenin beta-1, annexin, and integrin beta. Proteomic analysis revealed 256 differentially expressed proteins in geosmin-exposure group, with 18 common proteins screened by in vivo and in vitro methods. Among these, annexin, cathepsin D, and interleukin-1 receptors were highlighted as potential geosmin targets, with annexin demonstrating the highest binding affinity in silico. This study provides a robust protocol integrating in vivo, in vitro, and in silico approaches to elucidate geosmin's target proteins in grass carp gill tissue, advancing our understanding of pollutant-biological interactions and enhancing environmental risk assessment accuracy.
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