PEG-MGF
Also known as: PEG-MGF, PEG MGF, Pegylated MGF
PEG-MGF is a pegylated form of Mechano Growth Factor engineered for greater stability and a longer systemic half-life than native MGF. It is studied for muscle stem cell activation and recovery.
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Mechanism of Action
PEG-MGF attaches a polyethylene glycol (PEG) moiety to the MGF peptide, dramatically slowing enzymatic degradation and renal clearance so the molecule persists in circulation far longer than unmodified MGF. Like native MGF it carries the IGF-1Ec C-terminal E-domain, which recruits and proliferates satellite cells and delays their differentiation to expand the repair-capable stem cell pool. The pegylation shifts MGF from a strictly local, transient signal toward a more systemic, sustained exposure in research models. This extended availability is the rationale for less frequent dosing compared with native MGF.
- Half-life
- Extended versus native MGF, on the order of hours to a day
- Administration Routes
- subcutaneous
- Research Status
- Research Chemical
Reported Benefits
- Substantially longer half-life than unmodified MGF
- Sustained systemic activation of satellite cells in study models
- Investigated for enhanced post-exercise recovery
- May support muscle repair and hypertrophy in research settings
- Allows less frequent dosing than native MGF
- Explored alongside GH-axis peptides for recovery research
Potential Side Effects
- Injection-site irritation or redness
- Possible fluid retention
- Theoretical hypoglycemia via IGF-1-like signaling
- Unknown long-term safety in humans
- Potential immunogenicity from the modified peptide
Common Dosing
For research use only and not personal medical advice: protocols in the literature commonly reference 200-400 mcg one to a few times weekly owing to the longer half-life. Not approved for human use.
The dosing information above is aggregated from research literature and anecdotal community reports for educational purposes only. It is not a recommendation, prescription, or medical advice. Peptides are sold as research chemicals only and are not intended for human use.
Contraindications
- Active or prior malignancy due to growth-promoting effects
- Pregnancy or breastfeeding
- Uncontrolled diabetes or hypoglycemia risk
MGF (Mechano Growth Factor)
MGF is a splice variant of IGF-1 produced locally in muscle in response to mechanical loading or damage. It is studied for its role in activating muscle stem cells and supporting tissue repair.
IGF-1 LR3
IGF-1 LR3 (Long R3 IGF-1) is an engineered, long-acting analog of insulin-like growth factor 1 studied for sustained anabolic and tissue-growth signaling. Its modifications give it a far longer half-life than native IGF-1.
IGF-1 DES
IGF-1 DES is a truncated variant of insulin-like growth factor 1 missing the first three N-terminal amino acids, studied for potent, localized anabolic and tissue-growth effects. It is noted for higher activity at the site of injection.
MOTS-c
MOTS-c is a mitochondrial-derived peptide encoded within the 12S rRNA region that acts as a regulator of metabolism. It is studied for improving insulin sensitivity, metabolic flexibility, and exercise capacity.
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