Description
Core Mechanism of Action
Naturally occurring IGF-1 is heavily regulated by Insulin-like Growth Factor Binding Proteins (IGFBPs), which sequester the peptide and limit its availability. IGF-1 LR3 bypasses this restriction through two key modifications:
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- Arginine Substitution: An arginine replaces glutamic acid at the third position of the amino acid sequence.
- N-Terminal Extension: A 13-amino-acid extension is added to the N-terminus.
Because of these structural changes, IGF-1 LR3 cannot bind to the body’s natural IGFBPs. This alteration provides two major biochemical advantages:
- Extended Half-Life: While native IGF-1 has a half-life of only 12 to 15 minutes, IGF-1 LR3’s half-life is extended to roughly 20 to 30 hours.
- Increased Potency: By remaining “free” in circulation, the peptide retains an extremely high affinity for the IGF-1 Receptor (IGF-1R). It is considered approximately three times more potent than native IGF-1.
Biological Effects
Once IGF-1 LR3 binds to IGF-1 receptors on target tissues—primarily in skeletal muscle, bone, and connective tissues—it initiates several downstream biological cascades:
- Hypertrophy and Hyperplasia: The peptide activates the Akt/mTOR pathway, which promotes both cellular enlargement (hypertrophy) and the multiplication or creation of entirely new muscle fibers (hyperplasia).
- Protein Synthesis: It upregulates the translation of messenger RNA (mRNA) into proteins, allowing for more efficient tissue repair and cellular growth.
- Nutrient Partitioning: It increases cellular glucose uptake and amino acid transport, while concurrently influencing lipid metabolism and promoting the utilization of fatty acids for energy.
Key Features
- Premium research-grade peptide
- High-purity laboratory-tested formulation
- Reliable and consistent quality
- Sterile sealed vial packaging
- Suitable for scientific and peptide research applications
Research Applications
IGF-1 LR3 is commonly researched in peptide and biochemical laboratory studies. This compound is supplied exclusively for scientific analysis, laboratory investigation, and research development purposes.
Important Disclaimer
FOR RESEARCH USE ONLY. NOT FOR HUMAN OR ANIMAL CONSUMPTION.
This product is not intended to diagnose, treat, cure, or prevent any disease. Handling should only be performed by qualified professionals and licensed researchers in appropriate laboratory settings.
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