Acta Veterinaria et Zootechnica Sinica ›› 2025, Vol. 56 ›› Issue (4): 1561-1574.doi: 10.11843/j.issn.0366-6964.2025.04.009

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Progress on the Interactions of Brucella with Host Innate Immunity Signaling Pathways

LIU Aijun(), HUANG Xiaobing, ZHANG Chuanliang, ZHANG Hongli*()   

  1. Zhejiang Animal Disease Prevention and Control Center, Hangzhou 311119, China
  • Received:2024-05-14 Online:2025-04-23 Published:2025-04-28
  • Contact: ZHANG Hongli E-mail:1468965900@qq.com;hongli577@163.com

Abstract:

Brucellosis is a global zoonosis caused by Brucella infection. In recent years, the situation of brucellosis prevention and control is grim in China, posing a great threat to the cattle and sheep farming industry and public health security. Innate immunity serves as the first line of defense against pathogenic mocrobial infections and is crucial for maintaining homeostasis of the organism. Brucella can modulate innate immunity signaling pathways through a variety of strategies to establish persistent infections and also cause inflammatory diseases such as arthritis, hepatitis, encephalitis, and abortion. A comprehensive and in-depth understanding of the molecular mechanisms of Brucella interactions with innate immunity signaling pathways may provide new ideas for the development of safe and effective vaccines or drugs. Therefore, this paper reviews the roles and mechanisms of innate immunity signaling pathways such as Toll-like receptors(TLRs), cyclic guanosine adenylate synthetase(cGAS), stimulator of interferon genes(STING), NOD-like receptors(NLRs), AIM2-like receptors(ALRs), C-type lectin receptors(CLRs) and RIG-I-like receptors(RLRs) in the defense against Brucella infections, and summarizes the strategies of Brucella evade or hijacking these signaling pathways.

Key words: Brucella, immune envasion, TLRs, cGAS, STING, NLRs, ALRs, CLRs, RLRs

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