MGF (Mechano Growth Factor)
Mechano Growth Factor | IGF-1 Splice Variant
Community Research
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Non-pegylated IGF-1 splice variant produced locally in muscle tissue following mechanical stress. Has a very short half-life compared to PEG-MGF, requiring more frequent administration or localized injection.
Activates muscle satellite stem cells via receptor binding, stimulating MAPK/ERK signaling. Enhances protein synthesis and promotes muscle fiber repair. The E-peptide domain exhibits distinct activity from mature IGF-1.
Molecular Data
YQPPSTNKNTKSQRRKGSTFEEHK Complex or non-standard sequence format
Research Indications
Primary mechanism activating dormant muscle satellite cells which fuse to damaged fibers.
Short half-life means effects are concentrated at injection site.
Naturally upregulated after mechanical stress; supplementation enhances repair processes.
Animal studies suggest improved tendon injury outcomes when applied locally.
Research indicates potential for bone healing via osteoblast regulation.
Dosing Protocols
Intramuscular injection directly into target muscle immediately post-workout for localized effects due to short half-life.
| Goal | Dose | Frequency | Route |
|---|---|---|---|
| Standard Protocol | 100-300mcg | Daily, post-workout | IM into target muscle |
| Progressive Titration | 100mcg → 300mcg | Daily, increasing weekly | IM bilateral |
| Localized Recovery | 200-300mcg | Immediately post-workout | IM into worked muscle groups |
Reconstitution Instructions
- MGF lyophilized powder (typically 5mg vial)
- Bacteriostatic water (3.0mL recommended)
- Insulin syringes (29-31 gauge)
- Alcohol swabs
- 1 Allow vial to reach room temperature
- 2 Clean rubber stopper with alcohol swab
- 3 Add 3.0mL bacteriostatic water for ~1.67mg/mL concentration
- 4 Inject slowly along vial wall, not directly onto powder
- 5 Gently swirl to dissolve; never shake
- 6 Store refrigerated at 2-8°C
- 7 Use within 30 days of reconstitution
Interactions
What to Expect
Side Effects & Safety
Common Side Effects
- Injection site soreness
- Mild fatigue
Stop Signs - Discontinue if:
- Any unusual growths, lumps, or rapid tissue changes
- Severe injection site reactions
- Persistent headaches or vision changes
- Signs of hypoglycemia
Contraindications
- Any history of cancer or neoplastic disease
- Pregnancy or breastfeeding
- Uncontrolled diabetes
Quality Checklist
Good Signs
- White or off-white fluffy cake appearance
- Crystal clear solution after reconstitution
- Certificate of Analysis with HPLC purity >98%
Warning Signs
- Minor clumping that dissolves with gentle swirling
Bad Signs
- Collapsed or discolored powder
- Persistent cloudiness or visible particles
References
- MGF-E Peptide Human Muscle Cell Study(2011)
MGF significantly increased satellite cell proliferation at 3ng/ml with age-dependent effects.
- Mechano-Growth Factor Minireview(2010)
Overview of MGF as IGF-I gene product involved in tissue repair, upregulated following exercise and injury.
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Disclaimer
This information is for educational and research purposes only. Consult a healthcare professional before use.