›› 2015, Vol. 42 ›› Issue (4): 1028-1031.doi: 10.16431/j.cnki.1671-7236.2015.04.039

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Mechanism of Foot-and-mouth Disease Virus Leader Protease to Inhibit Host Innate Immune Response

LI Xia-ying1, XU Wen-tao2,3, WANG Qi-huai1   

  1. 1. Development Center of Science and Technology, Ministry of Agriculture, Beijing 100122, China;
    2. College of Food Science and Nutrition Engineering, China Agricultural University, Beijing 100083, China;
    3. Supervision, Inspection & Testing Center of Genetically Modified Food Safety, Ministry of Agriculture, Beijing 100083, China
  • Received:2014-10-31 Online:2015-04-20 Published:2015-05-05

Abstract: Foot-and-mouth disease (FMD) is an acute, febrile, highly contagious animal disease caused by foot-and-mouth disease virus (FMDV). FMDV has a variety of mechanisms resisting host innate immune response, leader protease (Lpro) has played a key role in the process. Lpro can cut off the host cell cap-dependent translation, inhibiting the synthesis of interferon. Lpro through destroying the integrity of NF-κB or reducing the expression of IRF3/7, inhibits the production of interferons mRNA. Besides, Lpro can take part in the deubiquitination of reninoic-acid-inducible gene Ⅰ (RIG-Ⅰ), TANK binding kinase 1 (TBK1), TNF receptor-associate factor 3 (TRAF3) and TRAF6, thus affecting the activation of type Ⅰ interferon signaling pathway.

Key words: FMDV; leader protease; typeⅠinterferon; innate immune response

CLC Number: