Hormone signaling · Compound guide
MGF Research Guide
Explore the mechanisms, study findings and evidence limits behind this research topic.
Product artwork identifies the SRP listing. It does not demonstrate safety or clinical benefit. The evidence guide and its sources follow below.
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Preclinical evidence with conflicting findings
Evidence reviewed September 13, 2026.
Research overview and identity
Mechano growth factor, or MGF, is terminology used for an IGF-I splice-variant context and for synthetic peptides derived from its E-domain. A short synthetic fragment is not the same material as the complete growth-factor precursor.
Mechanism under investigation
Research asks whether the E-domain peptide has actions separate from mature IGF-I. This distinction is important: experimental effects attributed to an IGF-I gene product do not automatically demonstrate independent activity of a supplied fragment.
What the studies report
Some preclinical studies reported activity in bone-related models, including rabbit work with a C-terminal peptide. However, a 2014 study using human and mouse myoblasts and primary satellite cells did not reproduce proposed effects of an MGF peptide while positive-control IGF-I remained active. [1] [2]
Limits of the evidence
The literature should be presented as mixed rather than as an established regeneration mechanism. Sequence, controls, cell type and assay conditions can help explain disagreements. These experiments do not demonstrate muscle repair or performance benefits in humans.
Matching research material to a paper
Check the material identity, formulation and analytical methods against the study methods. A product name or milligram amount alone does not demonstrate experimental equivalence. Published research does not establish the identity, purity or potency of a retail batch; batch-specific analytical documentation must be assessed separately.
For laboratory research only. Not for human or veterinary use. This guide is educational and contains no dosing, reconstitution or administration instructions.
Sources and further reading
- Preclinical MGF C-terminal peptide research in bone-related models
- Fornaro et al. (2014): testing proposed MGF peptide activity in muscle-cell systems