Molecular cloning and functional characterization of feline MAVS.
The mitochondrial anti-viral signaling protein (MAVS) plays an important role in the type I IFN response. In this study, two feline MAVS transcripts were cloned. Both transcripts have the same open reading frame encoding 523 amino acids. The putative protein shares 76.6 % similarity with canine and exhibits similarity to human, mouse, rat, bovine and porcine, ranging from 46.1 to 65.8 %. Deletion mutant analysis indicated that the transmembrane (TM) domain is necessary for localization in the mitochondrial membrane, and both the caspase activation and recruitment domain and TM domain are indispensible for activating the IFN-β response. Additionally, Sendai virus-induced IFN-β promoter activation was significantly inhibited by siRNA targeting MAVS. Finally, miniMAVS, a second protein encoded by MAVS mRNA, was identified, which interfered with the IFN-β response via the inhibition of NF-κB activation. The identification of MAVS will promote the understanding and control of feline infectious diseases.
State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin, People's Republic of China.
Hongxia
H
Wu
State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin, People's Republic of China.
Xiaozhan
X
Zhang
State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin, People's Republic of China.
Chunguo
C
Liu
State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin, People's Republic of China.
Dafei
D
Liu
State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin, People's Republic of China.
Jiasen
J
Liu
State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin, People's Republic of China.
Guoqing
G
Wang
State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin, People's Republic of China. tj6049345@126.com.
Jin
J
Tian
State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin, People's Republic of China. qld@hvri.ac.cn.
Liandong
L
Qu
D048868:Adaptor Proteins, Signal Transducing / Q000235:genetics / Q000378:metabolism*; D000595:Amino Acid Sequence; D000818:Animals; D002371:Cat Diseases / Q000276:immunology*; D002415:Cats / Q000276:immunology*; D002417:Cattle; D003001:Cloning, Molecular; D004285:Dogs; D006801:Humans; D016899:Interferon-beta / Q000378:metabolism; D051379:Mice; D008969:Molecular Sequence Data; D017434:Protein Structure, Tertiary / Q000235:genetics; D034741:RNA, Small Interfering / Q000235:genetics; D051381:Rats; D010253:Respirovirus Infections / Q000276:immunology* / Q000662:veterinary; D029082:Sendai virus / Q000276:immunology*; D017386:Sequence Homology, Amino Acid
D048868:Adaptor Proteins, Signal Transducing; D016899:Interferon-beta; D034741:RNA, Small Interfering; C512612:MAVS protein, mouse; C505371:MAVS protein, human
Feline MAVS; IFN-β response; Inhibition; miniMAVS