peptide wiki

PEG-MGF

aka PEGylated Mechano Growth Factor

Growth Hormone Secretagogues

Mechanism

PEG-MGF is the pegylated form of Mechano Growth Factor (MGF), the distinct 24-amino-acid C-terminal E-peptide encoded by the IGF-1Ec splice variant (IGF-1Eb in rodents) that is transiently upregulated in muscle after mechanical loading or damage. MGF is related to but pharmacologically distinct from mature IGF-1 and IGF-1 LR3. Pegylation extends its half-life from minutes to several hours, and the compound is marketed as a research chemical for muscle repair protocols. It is not FDA-approved for any indication.

Identification

SequenceYQPPSTNKNTKSQRRKGSTFEERK
Typical dose200–400 mcg subcutaneous, 2–3x per week
Half-life~48–72 hours (vs. ~5–7 minutes for unmodified MGF)

Vendors selling PEG-MGF

VendorSizePriceListed purityTrust
Moglabs 2 mg $40.00 96
BioLongevity Labs 5 mg $94.97 96
Ion Peptide 2 mg $39.00 95
Peptide Tech 2 mg $33.99 94
Peptidology 5 mg $87.00 89
Qihang Peptide 87
Simple Peptide 2 mg $39.00 85
Peptidegurus 5 mg 84
Crystal Peptides 2 mg $49.00 66
Sports Technology Labs 2 mg $46.99 58
Peptiatlas 51
HongDa Peptide $91.00 43
MJT peptides 2 mg $97.00 39
Biotech Peptides 5 mg $79.00
Core Peptides 5 mg $63.00
Flawless Compounds
Genetic Peptide 2 mg $50.00
Genetic Peptide 5 mg $50.00
Paramount Peptides 5 mg $119.00

Research

The emerging landscape of performance-enhancing peptides modulating GH-IGF1 axis: bridging the gap between clinical evidence and patient self-administration
Dominikowski A, Rękoś Z, Olejarz M, Szczepanek-Parulska E, Domin R, RuchaŁa M. · Frontiers in endocrinology (2026) · review

Performance-enhancing drugs (PEDs) marketed as "research compounds" include unregulated peptides intended to modulate the growth hormone-insulin-like growth factor-1 (GH-IGF-1) axis.

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A Clinical Trial of Trontinemab in Participants With Early Symptomatic Alzheimer's Disease
· ClinicalTrials.gov (2025) · rct

The purpose of this study is to assess the efficacy and safety of trontinemab in participants with early symptomatic Alzheimer's disease (AD) (mild cognitive impairment \[MCI\] to mild dementia due to AD).

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A Research Study Investigating Semaglutide in People With Early Alzheimer's Disease (EVOKE)
· ClinicalTrials.gov (2021) · rct

This study is done to find out whether the medicine, semaglutide, has a positive effect on early Alzheimer's disease. Participants will either get semaglutide or placebo (a "dummy" medicine which does not contain any study medicine) - which treatment participants get is decided by an equal chance.

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The Generation of Dehydroalanine Residues in Protonated Polypeptides: Ion/Ion Reactions for Introducing Selective Cleavages
Peng Z, Bu J, McLuckey SA. · Journal of the American Society for Mass Spectrometry (2017) ·

We examine a gas-phase approach for converting a subset of amino acid residues in polypeptide cations to dehydroalanine (Dha). Subsequent activation of the modified polypeptide ions gives rise to specific cleavage N-terminal to the Dha residue.

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A Study of PEG-somatropin Injection to Treat Children of Turner Syndrome
· ClinicalTrials.gov (2016) · rct

This study aims to explore the optimal dose of pegylated recombinant human growth hormone (PEG-rhGH) injection to treat children of Turner syndrome (TS), preliminarily evaluate its safety and efficacy and provide scientific and reliable evidence for the medication dosage in Phase 3 clinical trial.

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Clinical Study of Pegylated Somatropin (PEG Somatropin) to Treat SGA Children With Short Stature
· ClinicalTrials.gov (2015) · rct

The study was evaluated as the optimal dose for the treatment of SGA short stature children by Pegylated Somatropin, initially evaluated its efficiency and safety for the treatment of SGA short stature children and provided scientific, reliable basis for phase III clinical trials for dose selection.

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Intranasal, siRNA Delivery to the Brain by TAT/MGF Tagged PEGylated Chitosan Nanoparticles
Malhotra M, Tomaro-Duchesneau C, Saha S, Prakash S. · Journal of pharmaceutics (2013) ·

Neurodegeneration is characterized by progressive loss of structure and function of neurons. Several therapeutic methods and drugs are available to alleviate the symptoms of these diseases.

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The Evaluation of Bococizumab (PF-04950615;RN316) in Reducing the Occurrence of Major Cardiovascular Events in High Risk Subjects
· ClinicalTrials.gov (2013) · rct

This study evaluates the PCSK9 inhibitor, Bococizumab (PF-04950615;RN316), compared to placebo, in reducing the occurrence of major cardiovascular events, including cardiovascular death, myocardial infarction, stroke, and unstable angina requiring urgent revascularization, in high risk subjects who are receiving backgr…

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A Study in Non-Small Cell Lung Cancer
· ClinicalTrials.gov (2011) · rct

The primary purpose of this study is to evaluate the hypothesis that cixutumumab given in combination with cisplatin and pemetrexed is superior to cisplatin and pemetrexed as first-line therapy for patients with advanced nonsquamous non-small cell lung carcinoma (NSCLC).

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Effect of Otamixaban Versus Unfractionated Heparin + Eptifibatide in Patients With Unstable Angina/Non ST Elevation Myocardial Infarction Undergoing Early Invasive Strategy
· ClinicalTrials.gov (2010) · rct

Primary Objective: * To demonstrate the superior efficacy (composite of all-cause death + Myocardial Infarction (MI)) of Otamixaban to Unfractionated Heparin (UFH) + Eptifibatide Secondary Objectives: * To demonstrate the superior efficacy (composite of all-cause death + MI + any stroke) of Otamixaban as compared to UF…

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A Phase III Study of Apixaban in Patients With Atrial Fibrillation
· ClinicalTrials.gov (2007) · rct

The purpose of this clinical research study is to determine whether apixaban is more effective than acetylsalicylic acid in the prevention of strokes associated with patients with atrial fibrillation. The safety of this treatment will also be studied.

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