Neuromorphic electro-stimulation based on atomically thin semiconductor for damage-free inflammation inhibition

Area of Science:

• Biomedical Engineering
• Neuroscience
• Materials Science

Background:

• Inflammation is a key factor in many diseases, driven by inflammatory cytokines.
• Electro-stimulation shows potential for inflammation treatment but faces challenges like imprecise delivery and nerve damage.
• Current methods often require high amplitudes, leading to complications.

Purpose of the Study:

• To develop a neuromorphic electro-stimulation system for precise and damage-free inflammation inhibition.
• To investigate the mechanism of anti-inflammatory effects mediated by the novel device.
• To compare the efficacy of the new device with commercial stimulators.

Main Methods:

• Developed a neuromorphic electro-stimulation device using atomically thin semiconductor floating-gate memory interdigital circuits.
• Applied flexible electrodes to wrap the sympathetic chain for direct stimulation.
• Programmed floating-gate memory to generate bionic spikes, minimizing nerve damage.
• Utilized transgenic mice to elucidate the anti-inflammatory signaling pathways.

Main Results:

• Achieved a 73.5% reduction in the inflammatory cytokine IL-6.
• Demonstrated superior efficacy compared to commercial stimulators at significantly lower currents.
• Confirmed damage-free stimulation of sympathetic neurons.
• Identified β2 adrenergic signaling in myeloid cells (monocytes/macrophages, granulocytes) as crucial for the anti-inflammatory effect.

Conclusions:

• The proposed neuromorphic electro-stimulation offers a precise, effective, and damage-free approach to managing inflammation.
• The device's bionic spike capability and low current usage represent a significant advancement over existing electro-stimulation methods.
• Understanding the role of β2 adrenergic signaling provides new insights into targeted anti-inflammatory therapies.