Acta Veterinaria et Zootechnica Sinica ›› 2024, Vol. 55 ›› Issue (3): 971-983.doi: 10.11843/j.issn.0366-6964.2024.03.011

• REVIEW • Previous Articles     Next Articles

Structure, Secretory Characteristics, and Pathogenic Mechanism of Bacterial Outer Membrane Vesicles

GAO Yuanji1,2,3, LIU Chang1,2,3, CHEN Miao1, CHEN Songbiao1,2,3, ZHANG Junfeng4, LI Jing1,2,3, JIA Yanyan1,2,3, LIAO Chengshui1,2,3, GUO Rongxian1,2,3, DING Ke1,2,3, YU Zuhua1,2,3*, SHANG Ke1,2,3*   

  1. 1. College of Animal Science and Technology/Laboratory of Functional Microbiology and Animal Health, Henan University of Science and Technology, Luoyang 471003, China;
    2. Luoyang Key Laboratory of Live Carrier Biomaterial and Animal Disease Prevention and Control, Luoyang 471003, China;
    3. The Key Laboratory of Animal Disease and Public Health, Henan University of Science and Technology, Luoyang 471003, China;
    4. College of Medical Technology and Engineering, Henan University of Science and Technology, Luoyang 471003, China
  • Received:2023-06-27 Online:2024-03-23 Published:2024-03-27

Abstract: Bacterial outer membrane vesicles (OMVs) are vesicle-like structures released by Gram-negative bacteria during their growth. OMVs can be considered as "long-range weapons" of bacteria. OMVs play an important role in bacterial pathogenesis, which functions are to attack host tissues and help bacterial pathogens establish their biological niche, damage host cell functions, and regulate host defense. The substances secreted by bacteria into vesicles can drive special functions in the environment through combination, such as quorum sensing communication, biofilm formation, nutrition acquisition, antibiotic resistance, stress response, competition or defense against other microorganisms, environment, microbial community status, nucleic acid transfer, horizontal gene transfer, delivery of toxins and virulence factors. These characteristics play an indispensable role in the growth cycle of bacteria. This article mainly reviews the latest research progress in the structure, secretory characteristics, and regulatory pathogenicity mechanism of bacterial OMVs, providing theoretical guidance for the in-depth study of bacterial pathogenicity mechanism and the development of new antibacterial strategies.

Key words: bacteria, outer membrane vesicles, structure, secretion characteristics, pathogenesis

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