Acta Veterinaria et Zootechnica Sinica ›› 2025, Vol. 56 ›› Issue (6): 2546-2554.doi: 10.11843/j.issn.0366-6964.2025.06.003

• Review • Previous Articles     Next Articles

Research Progress in Antimicrobial Mechanism and Structural Modification of Bile Acids

PAN Hua1,2,3, SUN Lei4, ZHANG Jun1,2,3,*(), LIU Lili1,2,3, MA Wengang1,2,3, CAO Aizhi1,2,3, LV Mingbin1,2,3   

  1. 1. Longchang Animal Health Products Co., Ltd, Dezhou 253000, China
    2. Bile Acids Animal Health Dezhou Engineering Research Center, Dezhou 253000, China
    3. Dezhou Bile Acids R&D and Application Key Laboratory, Dezhou 253000, China
    4. Longkou Animal Disease Control Center, Yantai 264000, China
  • Received:2024-07-31 Online:2025-06-23 Published:2025-06-25
  • Contact: ZHANG Jun E-mail:zhangjun841013@aliyun.com

Abstract:

Bile acids, as a natural substance that inhibits the growth of microorganisms in animals, is gaining increasing attention. Currently, there is still a lack of systematic analysis of the diversity of antibacterial mechanisms of bile acids. In this review, the latest progress in the study of the antibacterial mechanism of bile acids, including the direct antibacterial mechanism (surfactant mechanism, destroying cell membrane homeostasis mechanism and oxidative damage mechanism), and the indirect antibacterial mechanism (activating the expression of host antibacterial substances and affecting the expression of bacterial functional genes). On this basis, the structural modification strategies (dimerization/polymerization, introduction of positively charged groups and synthetic biology of secondary bile acids) to improve the antibacterial activity of bile acids were summarized, with a view to providing theoretical reference and basis for the application of bile acids in bacteriostasis.

Key words: bile acids, antimicrobial mechanism, structural modification

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