MGF
Mechano Growth Factor (IGF-1Ec)
Mechano Growth Factor (MGF), also known as IGF-1Ec, is a splice variant of IGF-1 produced in skeletal muscle in response to mechanical loading and injury. It plays a key role in activating satellite cells and initiating muscle repair.
The Science
What is MGF?
MGF is the IGF-1Ec splice variant of the IGF-1 gene, generated locally in muscle tissue in response to stretch, damage, or resistance training.
Its primary biological role is activating muscle satellite cells, which proliferate and fuse with existing fibers to support repair and hypertrophy.
Unlike systemic IGF-1, MGF acts as a short-range, autocrine/paracrine factor with a brief biological half-life designed for local action at the site of injury or load.
Laboratory Observations
Key Observed Effects of MGF
Muscle Repair
Activates satellite cells central to muscle regeneration.
Recovery Support
Supports recovery from training and injury.
Hypertrophy
Contributes to muscle growth following mechanical loading.
Local Targeting
Designed for local rather than systemic action.
Mechanism of Action
Mechanism of Action
MGF activates satellite cells locally to drive muscle repair after damage.
Satellite Cell Activation
Triggers proliferation of muscle stem cells essential for repair.
Local Action
Acts as a short-range autocrine/paracrine factor in muscle.
Hypertrophy Support
Contributes to fiber growth following mechanical loading.
Research-Only Notice
MGF is categorized by the FDA as for research-purposes-only. It is not intended for human consumption, diagnosis, treatment, cure, or prevention of any disease. The information above summarizes effects observed in laboratory studies to date and is provided strictly for scientific and educational reference.