Melatonin behavior in restoring chemical damaged C2C12 myoblasts

Area of Science:

• Cell Biology
• Biochemistry
• Muscle Physiology

Background:

• Oxidative stress is a key factor in initiating apoptotic cell death in skeletal muscle.
• Dysregulated apoptosis is implicated in myopathies, sarcopenia, denervation, and disuse.
• Melatonin is known for its antioxidant properties and role in cellular protection.

Purpose of the Study:

• To investigate the protective effects of melatonin against oxidative stress and apoptosis in skeletal muscle cells.
• To determine the mechanisms underlying melatonin's action in myoblasts exposed to apoptotic triggers.

Main Methods:

• Undifferentiated C2C12 skeletal muscle cells were used.
• Cells were pretreated with melatonin and then exposed to chemical inducers of apoptosis (hydrogen peroxide, etoposide, staurosporine).
• Morphofunctional and molecular analyses were performed to assess cell viability and apoptosis.

Main Results:

• Melatonin pretreatment prevented oxidative stress and apoptosis induced by chemical agents in C2C12 myoblasts.
• The protective effects of melatonin were observed to involve, at least in part, the mitochondrial pathway.
• Melatonin demonstrated antioxidant and antiapoptotic activity in skeletal muscle cells.

Conclusions:

• Melatonin acts as an antioxidant and antiapoptotic agent in skeletal muscle cells.
• Melatonin's mechanism involves the mitochondrial pathway.
• Melatonin presents a potential therapeutic strategy for myopathies characterized by apoptosis misregulation.