PEG-MGF

Pegylated form of MGF; activates muscle stem cells (satellite cells) to repair and regenerate muscle tissue after damage

PEG-MGF (pegylated mechano growth factor) is a synthetic derivative of mechano growth factor (MGF, IGF-1Ec), in which the bioactive C-terminal E-peptide domain of the IGF-1 gene splice variant is chemically conjugated with polyethylene glycol (PEG) to improve aqueous stability and extend its proposed in vivo half-life relative to the rapidly degraded unmodified peptide. PEGylation is intended to preserve the proposed satellite cell-activating and tissue repair-promoting actions of the native MGF E-peptide over a longer post-administration window, with the pharmacological rationale extrapolated from preclinical and in vitro research on the parent MGF compound. No indexed peer-reviewed literature has been identified for PEG-MGF as a distinct chemical entity under its common name or under pegylated IGF-1 splice variant terminology in the biomedical literature, and the compound does not appear in PubMed with characterized pharmacokinetic or pharmacodynamic properties. PEG-MGF has no regulatory approval in any jurisdiction and no published human pharmacokinetic, safety, or efficacy data; it is sold as a research chemical by vendors without an evidence base establishing its biological activity as a defined and characterized therapeutic agent.