Biological function of Foot-and-mouth disease virus non-structural proteins and non-coding elements
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Published on: December 21, 2019
Yuan Gao1, Shi-Qi Sun1, Hui-Chen Guo2
1State Key Laboratory of Veterinary Etiological Biology and OIE/National Foot and Mouth Disease Reference Laboratory, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, Gansu, 730046, China.
Abstract:
Foot-and-mouth disease virus (FMDV) represses host translation machinery, blocks protein secretion, and cleaves cellular proteins associated with signal transduction and the innate immune response to infection. Non-structural proteins (NSPs) and non-coding elements (NCEs) of FMDV play a critical role in these biological processes. The FMDV virion consists of capsid and nucleic acid. The virus genome is a positive single stranded RNA and encodes a single long open reading frame (ORF) flanked by a long structured 5'-untranslated region (5'-UTR) and a short 3'-UTR. The ORF is translated into a polypeptide chain and processed into four structural proteins (VP1, VP2, VP3, and VP4), 10 NSPs (L(pro), 2A, 2B, 2C, 3A, 3B1-3, 3C(pro), and 3D(pol)), and some cleavage intermediates. In the past decade, an increasing number of studies have begun to focus on the molecular pathogenesis of FMDV NSPs and NCEs. This review collected recent research progress on the biological functions of these NSPs and NCEs on the replication and host cellular regulation of FMDV to understand the molecular mechanism of host-FMDV interactions and provide perspectives for antiviral strategy and development of novel vaccines.
Insights
Foot-and-mouth disease virus (FMDV) non-structural proteins (NSPs) and non-coding elements (NCEs) disrupt host cell functions, including translation and immunity. Understanding these interactions is key for developing new antiviral strategies and vaccines against FMDV.
Area of Science:
- Virology
- Molecular Biology
- Immunology
Background:
- Foot-and-mouth disease virus (FMDV) significantly impacts host cellular processes.
- Key viral components include non-structural proteins (NSPs) and non-coding elements (NCEs).
Purpose of the Study:
- To review recent advancements in understanding the biological functions of FMDV NSPs and NCEs.
- To elucidate the molecular mechanisms underlying host-FMDV interactions.
- To provide insights for developing novel antiviral strategies and vaccines.
Main Methods:
- Literature review of recent research on FMDV molecular pathogenesis.
- Analysis of studies focusing on FMDV non-structural proteins and non-coding elements.
- Synthesis of findings on viral replication and host cellular regulation.
Main Results:
- FMDV NSPs and NCEs are critical for repressing host translation, blocking protein secretion, and degrading host proteins involved in signal transduction and innate immunity.
- The FMDV genome, a positive single-stranded RNA, encodes structural proteins and 10 NSPs through a single open reading frame (ORF).
- Recent research highlights the significant role of NSPs and NCEs in modulating host cellular functions during FMDV infection.
Conclusions:
- FMDV NSPs and NCEs play crucial roles in viral pathogenesis by manipulating host cell machinery.
- A deeper understanding of these molecular interactions is essential for effective FMDV control.
- This knowledge can guide the development of targeted antiviral therapies and improved vaccine designs.
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