BHV-1 induced oxidative stress contributes to mitochondrial dysfunction in MDBK cells

Area of Science:

• * Virology
• * Cellular Biology
• * Pathogenesis

Background:

• * Bovine herpesvirus 1 (BHV-1) is an important veterinary pathogen.
• * Understanding BHV-1 pathogenesis involves studying its interaction with host cell metabolism.
• * Reactive oxygen species (ROS) play a role in cellular stress and viral infections.

Purpose of the Study:

• * To investigate the role of ROS, ATP levels, and mitochondrial membrane potential (MMP) during BHV-1 infection in MDBK cells.
• * To elucidate the relationship between ROS production and BHV-1 replication.
• * To determine the contribution of mitochondrial dysfunction to BHV-1 pathogenesis.

Main Methods:

• * Measurement of cellular reactive oxygen species (ROS) levels.
• * Quantification of ATP (cellular energy) levels.
• * Assessment of mitochondrial membrane potential (MMP).
• * Infection of MDBK cells with BHV-1.

Main Results:

• * BHV-1 infection significantly increased ROS production, dependent on viral entry and replication.
• * Excessive ROS was found to be necessary for efficient BHV-1 replication.
• * Both ATP levels and MMP were significantly decreased following BHV-1 infection.
• * Reduced ROS levels ameliorated the loss of MMP, suggesting a link between ROS and mitochondrial damage.
• * BHV-1 infection led to disruption of energy metabolism through ATP depletion.

Conclusions:

• * ROS-dependent mitochondrial damage is a key factor in BHV-1 pathogenesis.
• * Disruption of cellular energy metabolism, specifically ATP depletion, is a consequence of BHV-1 infection.
• * Targeting ROS production or mitochondrial function may represent therapeutic strategies against BHV-1.