The suppressor of cytokine signaling-1 (SOCS1) is a novel therapeutic target for enterovirus-induced cardiac injury

Area of Science:

• Cardiology
• Virology
• Immunology

Background:

• Enteroviral infections commonly cause myocarditis and dilated cardiomyopathy.
• Innate signaling in cardiac myocytes during viral infection is poorly understood.
• Janus kinase (JAK) signaling is vital for antiviral defense.

Purpose of the Study:

• Investigate the role of JAK signaling in cardiac myocyte antiviral defense.
• Determine the role of suppressor of cytokine signaling (SOCS) in enteroviral myocarditis.

Main Methods:

• Used cardiac myocyte-specific transgenic mice expressing SOCS1.
• Utilized adeno-associated virus (AAV)-mediated gene transfer to inhibit SOCS1.
• Infected mice with coxsackievirus to study enteroviral infection.

Main Results:

• Cardiac myocyte-specific SOCS1 expression inhibited JAK/STAT signaling, increasing viral replication and mortality.
• Inhibition of SOCS1 in cardiac myocytes enhanced resistance to enteroviral infection.
• JAK signaling is essential for antiviral defense in cardiac myocytes.

Conclusions:

• JAK signaling plays a critical role in cardiac myocyte antiviral defense.
• Inhibiting SOCS in cardiac myocytes can enhance antiviral responses and prevent viral-induced heart damage.
• Targeting SOCS may offer a therapeutic strategy against enteroviral myocarditis.