MGF (Mechano Growth Factor) Research Peptide — Scientific Overview
MGF (Mechano Growth Factor) is a splice variant of the IGF-1 gene that is upregulated in skeletal muscle, cardiac muscle, and bone in response to mechanical stretch, exercise, damage, or electrical stimulation. Unlike the liver-derived endocrine form of IGF-1 (class A/Ea splice variant), MGF is produced locally in muscle tissue from the class B/Eb splice variant of the IGF-1 mRNA. The MGF isoform contains a unique 49-nucleotide insert in the reading frame that generates a frameshift, producing a distinctive C-terminal peptide sequence not present in other IGF-1 splice variants.
Research into MGF has revealed that its unique C-terminal peptide (often called ‘MGF E-peptide’) activates a receptor distinct from the classical IGF-1 receptor — a finding that has generated significant research interest because it means MGF can have biological effects that are independent of, and in addition to, its shared IGF-1R-binding domain. The MGF E-peptide has been shown to specifically activate muscle satellite cells — the stem cell population responsible for muscle repair and hypertrophy following damage.
Research Background
Published MGF research spans skeletal muscle biology (satellite cell activation, muscle repair after damage), cardiac biology (cardioprotection in ischemia models), bone biology (mechanoresponsive bone formation), and aging research (age-related decline in MGF expression). MGF is notable as a mechanosensing peptide — its production is specifically triggered by mechanical force, making it a uniquely relevant compound for studying how muscles and other tissues respond to physical loading.
Key Research Areas
- Muscle Satellite Cell Research: Satellite cell activation, proliferation, and muscle repair pathway studies
- Mechanoresponse Research: Mechanically induced gene expression and muscle adaptation biology
- Muscle Hypertrophy Research: Anabolic signaling in response to mechanical loading and damage
- Cardiac Research: MGF expression in cardiac muscle and cardioprotection studies
- Bone Biology Research: Mechanosensitive bone formation and osteoblast biology
- Aging Research: Age-related decline in mechano-responsive IGF-1 splicing
Technical Specifications
| Parameter | Value |
|---|---|
| Classification | IGF-1 splice variant (class Eb) with unique E-peptide |
| MGF E-peptide MW | ~2.9 kDa (C-terminal peptide used in research) |
| Purity | ≥98% (HPLC-verified, E-peptide form) |
| Form | Lyophilized powder, sealed under argon |
| Storage | −20°C (long-term) |
| Documentation | Batch-specific COA (HPLC + Mass Spec) |
Storage & Handling (Research Laboratories)
Lyophilized MGF (Mechano Growth Factor) should be stored at −20°C for long-term preservation, protected from light and moisture. For short-term active research use, 4°C storage is acceptable for up to approximately 4 weeks. Minimize repeated freeze-thaw cycles. Follow standard laboratory peptide reconstitution and handling protocols for all experimental use.
