Acta Veterinaria et Zootechnica Sinica ›› 2025, Vol. 56 ›› Issue (5): 2182-2193.doi: 10.11843/j.issn.0366-6964.2025.05.018

• Animal Genetics and Breeding • Previous Articles     Next Articles

The Regulation Mechanism of Lipid Metabolism in Foie Gras Formation Based on Proteomics Analysis

HOU Zhongyi1(), WANG Baowei1,2,*(), ZHANG Ming'ai1,2, KONG Min1,2, ZHANG Jing3, WANG Binghan4, YUE Bin2, LU Xiu1, FAN Wenlei1,2,*()   

  1. 1. College of Animal Science and Technology, Qingdao Agricultural University, Qingdao 266109, China
    2. Institute of High Quality Waterfowl, Qingdao Agricultural University, Qingdao 266109, China
    3. College of Food Science and Engineering, Qingdao Agricultural University, Qingdao 266109, China
    4. Qingdao Huihe Biotechnology Co., Ltd., Qingdao 266109, China
  • Received:2024-09-24 Online:2025-05-23 Published:2025-05-27
  • Contact: WANG Baowei, FAN Wenlei E-mail:1429133886@qq.com;wangbw1959@qq.com;fanwenlei@qau.edu.cn

Abstract:

The study aimed to explore the molecular mechanism of foie gras formation, liver samples of Landes geese at 3 different feeding stages were analyzed by 4D-DIA quantitative proteomics. The 70-day-old Landes geese of the same batch with similar body condition were randomly selected and slaughtered at the early stage (7 d), middle stage (16 d) and final stage (25 d), 3 in each stage, respectively. The liver lobe and liver apex tissue samples were collected for 4D-DIA quantitative proteomic analysis. There were 3 groups with 3 biological replicates each. Result: 1) A total of 5 208 proteins were identified by comparison of the Landes geese liver at three different feeding stages. 2) Principal component analysis revealed significant differences in liver protein profiles across the 3 over-feeding stages, with 449 differential proteins identified in the comparison of early stage vs. middle stage, and 303 differential proteins identified in the comparison of middle stage vs. final stage. 3) Through pathway analysis of the differential metabolites, the enriched pathways were observed to be mainly involved in steroid hormone biosynthesis, ADIPOQ signaling pathway, amino sugar and nucleotide sugar metabolism, cysteine and methionine metabolism, arachidonic acid metabolism, and amino acid biosynthesis. The key differential genes ADIPOQ and PASK were identified based on RT-qPCR. The proteomic profile of liver of geese was significantly changed after over-feeding. The proteins related to steroid hormone biosynthesis and adipocytokine signaling pathway may be involved in the molecular regulation of foie gras formation.

Key words: foie gras, 4D-DIA quantitative proteomics, lipid metabolism, differential protein, molecular regulation mechanism

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