Mechanism of Action
Conventional IGF-1 primarily acts on the proliferation and differentiation of mature muscle cells; MGF tends to activate muscle satellite cells. Satellite cells are the stem cell reserve for muscle repair. After muscle is stretched or injured, the body expresses MGF to activate resting satellite cells, promoting cell proliferation and participating in the repair and reconstruction of damaged muscle tissue.
MGF does not depend on systemic circulation and is mainly expressed in local tissues. Animal experiments have observed that local administration can accelerate muscle damage repair and reduce muscle atrophy-related indicators. Compared to the IGF-1 Ea subtype, MGF exerts its effect faster, but its molecular stability is poor in vivo, making it easily degraded by enzymes and resulting in a very short half-life.
All biological conclusions are based on in vitro cell and animal models; there is no mature human clinical data, and therefore, the effects cannot be directly extrapolated to humans.
Product Characteristics
Most research-grade MGF on the market is a white, loose, lyophilized powder, packaged in vials, with mainstream specifications of 2mg and 5mg. The lyophilized powder has a loose texture and can be reconstituted using sterile water for injection or dilute acetate buffer.
Reconstitution and Research Use (Cell and Animal Experiments Only)
Maintain a clean environment throughout the reconstitution process. Do not shake the vial vigorously. Vigorous shaking can cause peptide chain breakage, directly reducing activity.
Add the solvent slowly along the inner wall of the vial, avoiding direct contact with the lyophilized powder. Gently rotate the vial, allowing the powder to dissolve naturally through liquid wetting; do not shake vigorously.
Concentration Calculation Example: 2mg of powder added to 1ml of solvent yields a 2mg/mL solution; adding 0.5ml of solvent yields a 4mg/mL concentration. Dosage depends entirely on the cell system and animal model; there is no safe human dose.
Common administration methods in animal experiments: local injection at the injury site, subcutaneous injection; direct addition to the culture medium in cell experiments. Never use in humans in any form.
Use the prepared working solution in experiments as soon as possible to minimize storage time, as MGF itself is less stable than most similar peptides.
Research Application Scenarios
Skeletal muscle injury repair research: the primary application area. Animal models of muscle contusion and strain are used to study satellite cell activation and muscle regeneration mechanisms, comparing the functional differences between MGF and IGF-1.
Related research on muscle atrophy: Animal models are created to simulate disuse atrophy and age-related muscle loss, observing the regulation of satellite cell activity by MGF and investigating pathways to combat muscle atrophy.
In vitro experiments at the cellular level: Skeletal muscle satellite cells and myogenic cells are cultured as positive stimuli to observe cell proliferation, migration, and differentiation.
Comparative pharmacological experiments: MGF is frequently compared with IGF-1 and LR3 to study differences in tissue targeting and in vivo metabolic stability.
Advertisements claiming to repair sports injuries and increase muscle mass through unofficial channels are exaggerated. MGF has an extremely short half-life in vivo, making direct use in humans unlikely to achieve ideal results and potentially interfering with the body's growth factor balance, posing unknown safety risks.
Storage Conditions: Unreconstituted lyophilized powder (original vial)
- Long-term storage: Store at -20℃, sealed and protected from light. Shelf life is 24 months. Minimize temperature fluctuations; repeated hot and cold cycles will accelerate peptide degradation.
- Short-term transport and temporary storage: Refrigerate at 2-8℃, minimize exposure to room temperature, protect from light and heat sources.
MGF is less stable than GHRP-2 and GHRP-6; prolonged storage at room temperature is not recommended for the dry powder.
Reconstituted MGF solution
- Short-term use (1-3 days): Refrigerate at 2-8℃, sealed and protected from light. Refrigeration storage for more than 3 days is not recommended, as the peptide degrades rapidly in solution.
- Long-term storage: Immediately aliquot into single-experiment portions after reconstitution and freeze at -20℃. Strictly prohibit repeated freeze-thaw cycles, as each freeze-thaw cycle significantly reduces activity.
- The reconstituted solution must never be left at room temperature; this will not only rapidly deactivate the peptide but also easily promote bacterial growth.
Practical storage precautions: Avoid holding the vial for extended periods, as hand warmth will raise the internal temperature; minimize opening the cap to prevent moisture absorption.
Yellowing, deliquescence, or clumping of the dry powder indicates that the material has deteriorated and cannot be used in experiments.
FAQ
Q: What is the minimum order quantity (MOQ)?
A: The MOQ is 10 bottles/set.
Q: How long does it take to ship?
A: In-stock orders will be shipped within 24 hours.
Q: What purity level can you provide?
A: Standard purity 99%.
Q: Which courier service do you use?
A: FedEx, DHL, UPS, and postal services are available.
Q: How long does shipping take?
A: Approximately 10-15 days.
Q: Can you provide a COA (Certificate of Account) quality inspection report and HPLC (High-Performance Liquid Chromatography) test report?
A: Yes, all goods undergo professional testing before shipment.
Q: Do you support OEM branding?
A: OEM branding service is supported, subject to minimum order quantity requirements.
Q: What are the after-sales service procedures? A: After the customer signs for the goods, if the quality problem is confirmed to be caused by our production, they can enjoy free replacement or refund. We adhere to the service principle of pragmatism and responsibility, actively respond to and properly handle all kinds of issues, without shirking responsibility or avoiding problems, and do our best to protect the rights and interests of our customers.
Q: What payment methods are available?
A: We support bank transfer, Bitcoin, Transferwise, and Xoom.
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