Immuno-metabolic changes in herpes virus infection

Area of Science:

• Immunology
• Virology
• Metabolomics

Background:

• Cellular metabolic pathways significantly influence host immune responses and overall health.
• Human Herpes simplex virus types 1 and 2 (HSV-1, HSV-2) cause a spectrum of diseases, from mild herpes to severe neurological complications.
• Immune responses to HSV involve intricate interactions between innate and adaptive immunity, including Interferon-1 (IFN-1) induction and the roles of Natural Killer (NK) cells and plasmacytoid Dendritic Cells (pDC).

Purpose of the Study:

• To review the critical role of the metabolome in modulating innate and adaptive immune responses during HSV infection.
• To highlight the interplay between metabolic alterations and immune system function in the context of HSV pathogenesis and control.
• To discuss how viral proteins, such as ICP0, interfere with host immune signaling pathways.

Main Methods:

• Literature review synthesizing current evidence on metabolomics and HSV immunity.
• Analysis of studies detailing metabolic pathway alterations in HSV-infected hosts.
• Examination of research on immune cell function and cytokine profiles in relation to metabolic changes during HSV infection.

Main Results:

• Metabolic changes demonstrably affect the up- or down-regulation of key cytokines and chemokines (e.g., IFN-γ, IL-2, IL-4, IL-10, MIP1β) during HSV infection and recurrence.
• The viral protein ICP0 is identified as a key factor that attenuates Toll-like receptor (TLR) signaling, thereby inhibiting innate immune responses to HSV.
• Metabolomic alterations are linked to the efficacy of both innate and adaptive immune effectors in controlling HSV infection and establishing latency.

Conclusions:

• The metabolome plays a crucial role in shaping the immune landscape during HSV infections.
• Understanding metabolic reprogramming in HSV infection is vital for developing novel therapeutic strategies.
• Targeting metabolic pathways could offer new avenues for enhancing anti-HSV immunity and managing disease recurrence.