IGF-1 LR3: Long-Acting Growth Factor Research

Research documentation on the extended half-life IGF-1 analog for muscle development

Source: https://indexalabs.com/blog/igf1-lr3-muscle-development-research Abstract: IGF-1 LR3 is a modified form of insulin-like growth factor with an extended half-life, making it valuable for research into muscle development, tissue repair, and anabolic pathways.

1. Overview

IGF-1 LR3 (Long R3 Insulin-like Growth Factor-1) is an 83-amino acid analog of human IGF-1. The modification includes a 13-amino acid extension at the N-terminus and an arginine substitution at position 3, resulting in significantly reduced binding to IGF-binding proteins and an extended half-life.

2. Mechanisms of Action

2.1 Enhanced Bioavailability Reduced binding to IGFBPs means more free IGF-1 is available for receptor activation, increasing potency compared to native IGF-1.

2.2 Anabolic Signaling IGF-1 activates the PI3K/Akt and MAPK pathways, promoting protein synthesis and cell proliferation.

2.3 Muscle Satellite Cells IGF-1 stimulates satellite cell activation and differentiation, supporting muscle repair and hypertrophy.

2.4 Anti-Catabolic Effects IGF-1 signaling inhibits protein degradation pathways, helping preserve lean tissue.

3. Research Applications

3.1 Muscle Hypertrophy Studies Investigating the role of IGF-1 in muscle fiber growth and regeneration.

3.2 Tissue Engineering IGF-1 LR3 is used in cell culture and tissue engineering applications.

3.3 Recovery Research Studies on accelerated recovery from muscle damage and exercise-induced injury.

4. Research Protocols

4.1 Available Sizes IGF-1 LR3 is available in 1mg vials for precise dosing in research applications.

4.2 Stability Considerations The modified structure provides enhanced stability compared to native IGF-1.

4.3 Storage Requirements Store lyophilized at -20°C. Reconstituted peptide should be aliquoted and stored frozen.