Related Experiment Video
Updated: Jun 3, 2026
10:48
Generation of Human Motor Units with Functional Neuromuscular Junctions in Microfluidic Devices
Published on: September 7, 2021
The modulation of myogenic cells differentiation using a semiconductor-muscle junction
Marco Quarta1, Michele Scorzeto, Marta Canato
1Muscle Biophysics Lab, Dept. of Anatomy and Physiology, University of Padova, via Marzolo, 3, 35131, Padova, Italy. mquarta@stanford.edu
Biomaterials
|March 16, 2011
Summary
Researchers developed a hybrid silicon-muscle cell junction for advanced neuro-prostheses. This device uses Electric Capacitive Stimulation (ECS) to control muscle cell behavior, paving the way for regenerative medicine.
Area of Science:
- Biomedical Engineering
- Cellular Neuroscience
- Regenerative Medicine
Background:
- Development of advanced neuro-prostheses and bionic systems requires novel interfaces.
- Artificial neuromuscular junctions are crucial for restoring motor function.
- Non-invasive stimulation methods are needed for precise cellular control.
Purpose of the Study:
- To design and prototype a hybrid silicon-muscle cell junction.
- To investigate the use of Electric Capacitive Stimulation (ECS) for controlling muscle cells.
- To explore the potential of this technology in regenerative medicine.
Main Methods:
- Coupling of single muscle cells with semiconductor substrates.
- Focal Electric Capacitive Stimulation (ECS) without electrochemical reactions.
- Chronic stimulation of myotubes and myoblasts to induce calcium transients and assess cellular responses.
Main Results:
- ECS successfully induced cytosolic calcium transients in both myotubes and myoblasts.
- Chronic ECS promoted muscle cell maturation, plasticity (NFAT-C3 translocation), and simulated synaptogenesis (AchR clustering).
- The hybrid junction provided non-invasive, single-cell level control over myogenic differentiation.
Conclusions:
- The hybrid silicon-muscle cell junction is a viable prototype for artificial neuromuscular interfaces.
- ECS offers a promising non-invasive method for modulating muscle cell behavior and differentiation.
- This technology presents a platform for regenerative medicine strategies requiring precise cellular control.
Related Concept Videos
01:13Formation of Muscle Fibers from Myoblasts
De novo myogenesis, or the formation of muscle fibers, begins during the early embryonic stages. The skeletal muscle is formed from somites– blocks of embryonic cell layers. The somites are further divided into dermatomes, myotomes, sclerotomes, and syndetomes. Among these, the myotomes give rise to muscle fibers.
Muscle progenitor cells (MPCs) are formed from the myotomes. MPCs express genes that encode the transcription factors Pax3 and Pax7. Along with Pax 3/7, other transcription factors...
Muscle progenitor cells (MPCs) are formed from the myotomes. MPCs express genes that encode the transcription factors Pax3 and Pax7. Along with Pax 3/7, other transcription factors...
01:25Smooth Muscle Contraction
Smooth muscle contraction is a complex process vital for various bodily functions, from maintaining blood vessel tension to facilitating the movement of food through the digestive tract. Unlike striated muscles, smooth muscle contraction begins more slowly and lasts longer.
The onset of contraction is triggered by an increase in calcium ions within the sarcoplasm, similar to the process in striated muscle. However, smooth muscles have a relatively smaller reservoir of the sarcoplasmic...
The onset of contraction is triggered by an increase in calcium ions within the sarcoplasm, similar to the process in striated muscle. However, smooth muscles have a relatively smaller reservoir of the sarcoplasmic...
01:21Satellite Stem Cells and Muscular Dystrophy
Satellite stem cells or myosatellite cells are quiescent stem cells that Alexander Mauro first identified in 1961. These cells are located between the sarcolemma, the plasma membrane of muscle fibers, and the basal lamina, the connective tissue sheath covering it. These mononucleated cells are activated in response to muscle injury, can transform into myoblasts, and may form or repair muscle fibers. Myosatellite cells can provide additional myonuclei for muscle regeneration or return to a...
01:19The Neuromuscular Junction
The nervous system consists of complex motor neuron circuits, including upper motor neurons originating from the cerebral cortex and lower motor neurons starting in the spinal cord, coordinating both voluntary and involuntary movements. Among these, somatic motor neurons activate skeletal muscles and are classified into alpha, beta, and gamma types. Alpha neurons are vital for voluntary movement coordination, while gamma neurons adjust muscle spindle sensitivity, and the function of beta...
01:24Generation of Action Potential in Skeletal Muscles
Every cell in the body maintains a membrane potential due to an uneven distribution of positive and negative charges across its plasma membrane. The membrane potential is measured in millivolts and quantifies the difference in charge across the membrane.
Like neurons, muscle cells are also regarded as excitable due to their capacity to change in response to stimuli, primarily due to voltage-gated ion channels embedded in their plasma membranes, which get activated by alterations in the cell's...
Like neurons, muscle cells are also regarded as excitable due to their capacity to change in response to stimuli, primarily due to voltage-gated ion channels embedded in their plasma membranes, which get activated by alterations in the cell's...
01:29Neuromuscular Junction And Blockade
The site of chemical communication between a motor neuron and a muscle fiber is called the neuromuscular junction (NMJ). The end of the motor neuron at the NMJ divides into a cluster of synaptic end bulbs. The cytoplasm of these bulbs consists of synaptic vesicles enclosing acetylcholine molecules, the principal neurotransmitter released at the NMJ. The region opposite the synaptic bulb that ends in the muscle fiber is called the motor end plate, which has acetylcholine receptors. Within the...