Skeletal muscle cells opto-stimulation by intramembrane molecular transducers

Area of Science:

• Biomedical Engineering
• Cell Biology
• Optogenetics

Background:

• Optical stimulation of muscle cells offers potential for hybrid robotics and medicine.
• C2C12 skeletal muscle cells provide a viable, animal-free model for studying cellular responses.
• Molecular phototransducers enable precise control over cellular functions.

Purpose of the Study:

• To investigate the efficacy of molecular phototransducers for stimulating C2C12 skeletal muscle cell contraction.
• To analyze the response distribution and consistency between optical stimuli and muscle contraction in multinuclear cells.
• To compare the advantages of optical stimulation versus traditional electrical stimulation in muscle cells.

Main Methods:

• Utilizing a novel molecular phototransducer to optically stimulate C2C12 skeletal muscle cells.
• Employing imaging software with object recognition to detect and quantify muscle contractions.
• Analyzing the relationship between light intensity, stimulation frequency, and cellular response patterns.

Main Results:

• Demonstrated a deterministic relationship between light stimuli and muscle cell contraction.
• Quantified variations in cellular response, correlating them with light intensity and stimulation frequency.
• Observed reduced cell stress with optical stimulation compared to electrical stimulation.

Conclusions:

• Molecular phototransducers effectively stimulate C2C12 skeletal muscle cells, enabling controlled contractions.
• Optical stimulation presents a less stressful alternative to electrical stimulation for muscle cell applications.
• This approach holds promise for advancements in regenerative medicine and biohybrid robotics.