Translation control of Enterovirus A71 gene expression

Area of Science:

• Virology
• Molecular Biology
• Biochemistry

Background:

• Enterovirus 71 (EV-A71) infection relies on host cell translation machinery.
• Viral RNA translation typically differs from host cell translation, often employing unique mechanisms.
• EV-A71's RNA genome lacks a 5' cap, necessitating alternative translation initiation strategies.

Purpose of the Study:

• To review the strategies employed by EV-A71 to hijack host cell translation.
• To elucidate the role of the internal ribosomal entry site (IRES) in EV-A71 cap-independent translation.
• To understand how EV-A71 manipulates host antiviral responses to promote viral replication.

Main Methods:

• This review synthesizes existing research on EV-A71 translation mechanisms.
• Analysis of viral RNA structure and its interaction with host ribosomal machinery.
• Examination of host-pathogen interactions during EV-A71 infection.

Main Results:

• EV-A71 utilizes a cap-independent translation mechanism mediated by its 5' untranslated region (UTR) IRES.
• Viral RNA actively controls protein synthesis stages during infection.
• EV-A71 co-opts host protein factors to suppress antiviral responses and enhance viral translation.

Conclusions:

• EV-A71 employs sophisticated RNA-centric strategies to exploit host translation.
• Understanding these mechanisms is crucial for developing antiviral therapies against EV-A71.
• EV-A71's manipulation of host translation highlights a key viral adaptation for replication.