A body-brain circuit that regulates body inflammatory responses

Area of Science:

• Neuroimmunology
• Physiology

Background:

• The body-brain axis is a key regulator of physiological processes, including metabolism and nutritional state.
• Emerging evidence highlights its role in sensing and controlling organ function.

Purpose of the Study:

• To investigate the role of the body-brain axis in regulating immune responses to peripheral insults.
• To identify the neural circuits and mechanisms underlying brain-mediated immune modulation.

Main Methods:

• Single-cell RNA sequencing to identify neuroimmune axis components.
• Functional imaging to observe neural activity during immune responses.
• Genetic manipulation to silence or activate specific neural circuits.

Main Results:

• Peripheral immune insults activate the body-brain axis, signaling the brain via vagal neurons.
• The brain actively modulates peripheral inflammatory and anti-inflammatory responses.
• Genetic silencing of this circuit leads to uncontrolled inflammation; activation enables neural control.

Conclusions:

• The body-brain axis is critical for orchestrating immune responses.
• Targeting this neuroimmune circuit offers therapeutic potential for inflammatory and autoimmune diseases.
• Brain-evoked immune response modulation can suppress inflammation and promote anti-inflammatory states.