Research on PEG-MGF Peptide?
Enhanced muscle recovery and repair: Studies indicate that PEG-MGF improves muscle repair and recovery by prolonging the half-life of the peptide, which permits sustained activity (1). A splice variant of IGF-1, MGF is expressed in response to mechanical stress and stimulates satellite cells, which facilitates myoblast differentiation, proliferation, and effective muscle fiber repair (2).
According to studies, MGF promotes tendon healing and increases muscle fiber size by about 25% in animal models (3). MGF also promotes satellite cell activation and delays muscle cell senescence, which may have therapeutic benefits for tendon repair, age-related sarcopenia, and muscle regeneration without the carcinogenic risks of IGF-1.
Increased Muscle Growth and Hypertrophy: Research indicates that PEG-MGF may enhance muscle growth and hypertrophy by promoting repair and regeneration processes. As a splice variant of IGF-1, MGF is upregulated in response to mechanical stress, stimulating satellite cell activation and myoblast proliferation. This supports muscle remodeling and potentially leads to muscle fiber hyperplasia (new fiber formation) in addition to hypertrophy (4).
While claims of improved lean body mass, strength, and endurance are largely anecdotal, studies suggest PEG-MGF’s role in enhancing myogenesis, reducing apoptosis, and supporting muscle development, making it a promising candidate for muscle growth and recovery (5).
Bone Healing: Research suggests that PEG-MGF shows potential in tissue repair beyond muscle, including bone, cartilage, tendon, and ligament regeneration. Studies in rabbits show that it accelerated bone healing by enhancing osteoblast proliferation via the MAPK-Erk1/2 pathway (6).
For cartilage repair, MGF combined with TGF-β3 in silk fibroin scaffolds improved mesenchymal stem cell recruitment and chondrogenic differentiation, promoting cartilage-like tissue regeneration (7).
Additionally, MGF protects growth plate chondrocytes from mechanical damage and enhances their migration through the RhoA/YAP signaling axis. These findings highlight PEG-MGF’s broader regenerative potential in addressing degenerative conditions and tissue injuries across various systems (8).
Cardiovascular Health: PEG-MGF shows potential benefits for cardiovascular health, particularly in post-myocardial infarction recovery. Studies reveal that the MGF E-domain peptide, delivered via bioengineered polymeric microstructures, improves cardiac function and reduces mortality after coronary artery ligation in mice.
This treatment mitigated declines in systolic and diastolic function, delayed heart decompensation, and inhibited pathological hypertrophy. By preventing adverse cardiac remodeling and improving hemodynamics, PEG-MGF demonstrates promise as a therapeutic approach for enhancing heart repair and function following cardiovascular injury, offering a novel strategy for managing heart disease (9).
Neuroprotective Effects: Research has indicated that PEG-MGF exhibits neuroprotective effects, particularly in ischemic stroke models. The C-terminal peptide of MGF, an IGF-1 splice variant, has been shown to provide significant protection to vulnerable neurons in gerbil models of transient brain ischemia.
Studies showed that endogenous MGF expression increases in ischemia-resistant hippocampal neurons, suggesting its natural neuroprotective role. In vitro, the synthetic MGF peptide matches IGF-1’s neuroprotective potency but with longer-lasting effects, acting independently of the IGF-1 receptor. These findings highlight its potential as a therapeutic agent for preventing neuronal damage and supporting brain health (10).
Buy PEG-MGF Pre-Mixed Peptide from Peptide Works. The pre-mixed pen kit is available in 2mg cartridges, supplied with a cartridge pen, needle tips, and carry case.
References
(1) K-T Sun, K-K Cheung, S W N Au, et al (2018) Overexpression of Mechano-Growth Factor Modulates Inflammatory Cytokine Expression and Macrophage Resolution in Skeletal Muscle Injury – Frontiers in Physiology, 2018 Jul 26, Volume 9, Page 999.
(2) P Kumar Kandalla, G Goldspink, G Butler-Browne, and V Mouly (2011) Mechano Growth Factor E peptide (MGF-E), derived from an isoform of IGF-1, activates human muscle progenitor cells and induces an increase in their fusion potential at different ages – Mechanisms of Ageing and Development, Volume 132, Issue 4, April 2011, Pages 154-162.
(3) B Zhang, Q Luo, D Kuang, et al (2016) Mechano-growth factor E peptide promotes healing of rat injured tendon – Biotechnology Letters, 2016 Oct, Volume 38 (Issue 10), Pages 1817-25.
(4) R W Matheny Jr, B C Nindl, and M L Adamo (2010) Minireview: Mechano-growth factor: a putative product of IGF-I gene expression involved in tissue repair and regeneration – Endocrinology, 2010 Mar, Volume 151 (Issue 3), Pages 865-75.
(5) M Chikazawa, M Shimizu, Y Yamauchi, and R Sato (2020) Bridging molecules are secreted from the skeletal muscle and potentially regulate muscle differentiation – Biochemical & Biophysical Research Communications, 2020 Jan 29, Volume 522 (Issue 1), Pages 113-120.
(6) M Deng, B Zhang, K Wang, et al (2011) Mechano growth factor E peptide promotes osteoblasts proliferation and bone-defect healing in rabbits – International Orthopaedics, 2011 Jul, Volume 35 (Issue 7), Pages 1099-106.
(7) L Ziwei, L Jiang, Y Xu, and H Li (2015) Mechano growth factor (MGF) and transforming growth factor (TGF)-β3 functionalized silk scaffolds enhance articular hyaline cartilage regeneration in rabbit model – Biomaterials, Volume 52, June 2015, Pages 463-475.
(8) X Jing, Y Ye, Y Bao, et al (2018) Mechano-growth factor protects against mechanical overload induced damage and promotes migration of growth plate chondrocytes through RhoA/YAP pathway – Experimental Cell Research, 2018 May 15, Volume 366 (Issue 2), Pages 81-91.
(9) J R Peña, J Pinney, P Ayala, et al (2015) Localized Delivery of Mechano-Growth Factor E-domain Peptide via Polymeric Microstructures Improves Cardiac Function following Myocardial Infarction – Biomaterials, 2015 Jan 16; 0: 26–34.
(10) J Dluzniewska, A Sarnowska, M Beresewicz, et al (2005) A strong neuroprotective effect of the autonomous C-terminal peptide of IGF-1 Ec (MGF) in brain ischemia – FASEB Journal, 2005 Nov, Volume 19 (Issue 13), Pages 1896-8.