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IGF-1 Splice Variant

PEG-MGF

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Overview

A splice variant of IGF-1 implicated in muscle repair signaling; studied in cells and animals, not in adequate human trials.

How it works

PEG-MGF is a pegylated (longer-lasting) form of a natural splice variant of IGF-1 called mechano growth factor, which muscle produces in response to mechanical stress.

It's associated with activating muscle 'satellite' (stem) cells and prompting them to multiply during repair — a step in how muscle recovers and grows — signaling partly through pathways separate from the classic IGF-1 receptor. The pegylation is added to make it last longer in the body.

This is preclinical biology; human therapeutic data are essentially absent, and it is not an approved product.

Mechanism · Detailed Analysis
Molecular targetA pegylated form of the IGF-1Ec splice variant (mechano growth factor) E-domain peptide.
Proposed downstream effectsAssociated with satellite-cell activation and proliferation during muscle repair, signalling partly independently of the classical IGF-1 receptor.
Evidence & caveatsPreclinical; human therapeutic data are essentially absent.
Published EvidenceLoading cited studies from PubMed…
Human Data ···

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Animal ···

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In Vitro ···

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Educational aggregation of public literature. Not medical advice and not a recommendation to use any compound. Many compounds here are not approved for human use. Consult a licensed clinician.