IGF-1 LR3 1mg

IGF-1 LR3 is a potent analog of Insulin-like Growth Factor-1, designed with a longer half-life and increased biological activity compared to native IGF-1. This modification allows it to circulate in the body for an extended period, offering sustained potential effects in various research models.

Researchers investigate IGF-1 LR3 for its role in cellular proliferation, differentiation, and metabolism. Its enhanced stability and efficacy make it a subject of interest for studying tissue repair, muscle growth, and metabolic regulation in preclinical settings.

Mechanism of Action

IGF-1 LR3 primarily exerts its effects by binding to the IGF-1 receptor (IGF-1R) with high affinity. This binding initiates a cascade of intracellular signaling pathways, most notably the PI3K/Akt and MAPK pathways, which are critical for cell growth, survival, and protein synthesis. The LR3 modification reduces its binding affinity to IGF-binding proteins (IGFBPs), allowing more free IGF-1 LR3 to interact with its receptors and produce prolonged biological responses.

Structure and Class

IGF-1 LR3 is a synthetic 83-amino acid peptide, an analog of human IGF-1. It contains the complete human IGF-1 sequence with a thirteen amino acid extension at the N-terminus (Arg3) and a substitution of Arginine for Glutamic acid at the third position. This structural alteration enhances its resistance to degradation by proteases and significantly extends its half-life.

Primary Research Areas

The primary research areas for IGF-1 LR3 include studies on muscle hypertrophy and regeneration, bone density, neurological function, and metabolic regulation. Researchers are exploring its potential in models of muscle wasting, age-related decline, and various injury recovery scenarios due to its anabolic and regenerative properties.

Notable Peer-Reviewed Findings

Early research on IGF-1 LR3 has shown its capacity to promote muscle growth and improve recovery in animal models. Some investigational studies suggest it may play a role in supporting bone health and influencing glucose metabolism. Researchers continue to evaluate its effects on cellular proliferation and tissue repair mechanisms in diverse biological systems.