Foot-and-Mouth Disease Virus Inhibits RIP2 Protein Expression to Promote Viral Replication.

Abstract:

:Receptors interaction protein 2 (RIP2) is a specific adaptor molecule in the downstream of NOD2. The role of RIP2 during foot-and-mouth disease virus (FMDV) infection remains unknown. Here, our results showed that RIP2 inhibited FMDV replication and played an important role in the activation of IFN-β and NF-ĸB signal pathways during FMDV infection. FMDV infection triggered RIP2 transcription, while it reduced the expression of RIP2 protein. Detailed analysis showed that FMDV 2B, 2C, 3Cpro, and Lpro proteins were responsible for inducing the reduction of RIP2 protein. 3Cpro and Lpro are viral proteinases that can induce the cleavage or reduction of many host proteins and block host protein synthesis. The carboxyl terminal 105-114 and 135-144 regions of 2B were essential for reduction of RIP2. Our results also showed that the N terminal 1-61 region of 2C were essential for the reduction of RIP2. The 2C-induced reduction of RIP2 was dependent on inducing the reduction of poly(A)-binding protein 1 (PABPC1). The interaction between RIP2 and 2C was observed in the context of viral infection, and the residues 1-61 were required for the interaction. These data clarify novel mechanisms of reduction of RIP2 mediated by FMDV.

journal_name

Virol Sin

journal_title

Virologica Sinica

authors

Liu H,Xue Q,Zhu Z,Yang F,Cao W,Liu X,Zheng H

doi

10.1007/s12250-020-00322-2

subject

Has Abstract

pub_date

2021-01-05 00:00:00

eissn

1674-0769

issn

1995-820X

pii

10.1007/s12250-020-00322-2

pub_type

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