Molecular Characteristics
Complete Specifications
Structural Composition
pGlu-His-Trp-Ser-Tyr-Gly-Leu-Arg-Pro-Gly-NH₂
Physical Properties
Gonadorelin Acetate is a synthetic decapeptide corresponding to the native gonadotropin-releasing hormone (GnRH) sequence with C-terminal amidation and N-terminal pyroglutamic acid. The acetate salt form improves handling and solubility characteristics for laboratory use. As a short-chain peptide, it is susceptible to enzymatic degradation in biological environments; therefore, lyophilized storage under cold, dry conditions is recommended to preserve structural integrity. Protection from moisture, light, and repeated freeze–thaw cycles helps maintain analytical consistency during research applications.
Research Applications
Insulin-Like Growth Factor Signaling Research
IGF-1 LR3 (Long Arg3 Insulin-Like Growth Factor-1) is utilized as a research compound in studies examining insulin-like growth factor receptor (IGF-1R) activation and extended anabolic signaling pathways. Laboratory investigations focus on its role in:
- IGF-1 Receptor Binding Models: Investigation of receptor affinity, activation kinetics, and downstream intracellular cascades
- PI3K-AKT Pathway Studies: Evaluation of anabolic and survival signaling mechanisms following receptor engagement
- MAPK/ERK Signaling Research: Analysis of proliferative and differentiation-associated pathways
- Reduced IGF Binding Protein Interaction Models: Examination of altered binding dynamics contributing to extended activity
- Signal Duration and Potency Analysis: Investigation of prolonged receptor activation characteristics
Experimental protocols commonly employ receptor-binding assays, cultured myocytes and fibroblasts, and intracellular signaling analyses to characterize IGF-1 LR3–mediated responses.
Muscle and Cellular Growth Research
IGF-1 LR3 has been extensively studied in research models examining cellular growth, differentiation, and anabolic signaling. Key areas of investigation include:
- Myoblast Proliferation Models: Evaluation of precursor cell expansion and maturation processes
- Protein Synthesis Pathway Studies: Investigation of mTOR-associated intracellular signaling mechanisms
- Cellular Hypertrophy Research: Analysis of structural protein expression and cell size regulation
- Satellite Cell Activation Studies: Research into regenerative cell population signaling
- Tissue Remodeling Models: Examination of extracellular matrix and structural adaptation processes
These studies utilize muscle cell cultures, protein expression assays, and histological analysis to evaluate growth-related cellular outcomes.
Metabolic and Glucose Signaling Research
IGF-1 LR3 has also been explored in research models examining metabolic regulation and insulin-related signaling pathways, including:
- Glucose Uptake Models: Evaluation of cellular glucose transport dynamics under IGF receptor stimulation
- Insulin Receptor Cross-Talk Studies: Investigation of signaling overlap between IGF-1R and insulin pathways
- Lipid Metabolism Research: Analysis of substrate utilization and storage signaling mechanisms
- Mitochondrial Activity Models: Examination of energy production and oxidative phosphorylation dynamics
Laboratory protocols assess metabolic biomarkers, glucose transport activity, and intracellular signaling responses using biochemical and cellular assays.
Cellular Signaling and Regulatory Pathway Research
Additional research applications explore IGF-1 LR3’s influence on intracellular regulatory systems involved in growth and survival signaling, including:
- Apoptosis and Survival Pathway Studies: Investigation of cell survival signaling balance under receptor activation
- Gene Expression Profiling: Analysis of transcriptional responses associated with anabolic modulation
- Receptor Sensitivity Research: Examination of signaling attenuation and feedback regulation mechanisms
- Homeostatic Growth Regulation: Analysis of integrated cellular systems maintaining growth balance
Research in this domain focuses on understanding how IGF-1 LR3 influences IGF-1 receptor signaling, anabolic cellular pathways, and metabolic regulatory mechanisms under controlled experimental conditions.
Laboratory Handling and Storage Protocols
Lyophilized Powder Storage
- Store at –20°C to –80°C in the original, sealed vial
- Protect from light exposure and moisture
- A desiccated storage environment is recommended
- Stability data suggests extended stability when stored at −20 °C or below.
Reconstituted Solution Storage
- Short-term storage: Up to 7 days at 4°C
- Long-term storage: Store at –20°C in aliquots
- Use single-use aliquots to preserve peptide integrity
- Minimize freeze–thaw cycles; single-use aliquots are strongly recommended
Stability Characteristics
IGF-1 LR3 is a modified synthetic peptide research compound designed for enhanced stability relative to native IGF-1. When handled under standard peptide laboratory protocols, including proper cold storage and careful reconstitution, it maintains structural integrity and solubility. Minimizing mechanical agitation and freeze–thaw exposure supports consistent performance in in vitro and analytical research applications.
Frequently Asked Questions
What is IGF-1 LR3?
IGF-1 LR3 is a modified analog of insulin-like growth factor-1 that includes an arginine substitution at position 3 and an extended N-terminal sequence. These changes are engineered to enhance activity duration and receptor interaction in research models.
What is IGF-1 LR3 commonly researched for?
In laboratory and preclinical models, IGF-1 LR3 is studied for:
-
IGF-1 receptor activation
-
Cellular growth and proliferation signaling
-
Protein synthesis pathway investigation
-
Endocrine and metabolic signaling research
All applications are exploratory and conducted in controlled research environments.
How does IGF-1 LR3 differ from standard IGF-1?
IGF-1 LR3 differs from native IGF-1 by:
-
An Arginine substitution at position 3
-
An extended amino acid sequence at the N-terminus
These modifications are designed to reduce affinity for IGF-binding proteins and extend activity duration in experimental settings.
Is IGF-1 LR3 the same as growth hormone (GH)?
No. IGF-1 LR3 directly interacts with the IGF-1 receptor, while growth hormone acts primarily through the growth hormone receptor (GHR) and stimulates endogenous IGF-1 production. Although they are related within endocrine signaling pathways, their mechanisms differ.
How is IGF-1 LR3 supplied?
IGF-1 LR3 is typically supplied as a lyophilized (freeze-dried) powder in sealed research vials to maintain stability during storage and shipment.
How should unreconstituted IGF-1 LR3 be stored?
Lyophilized IGF-1 LR3 should be stored:
-
Long-term: −20 °C to −80 °C
-
Short-term: 2–8 °C
Keep vials sealed and protected from light and moisture until use.
How should reconstituted IGF-1 LR3 be handled and stored?
Once reconstituted:
-
Store at 2–8 °C for short-term laboratory use
-
For extended storage, aliquot and freeze at −20 °C or below
-
Minimize freeze–thaw cycles using single-use aliquots
-
Gently swirl to mix; avoid vigorous agitation
Does IGF-1 LR3 require a Certificate of Analysis (COA)?
Yes. A Certificate of Analysis (COA) should be available for each batch, verifying peptide identity, purity, and analytical testing results to ensure research quality and traceability.
Is IGF-1 LR3 FDA-approved?
No. IGF-1 LR3 is not FDA-approved as a drug, supplement, or therapeutic product. It is sold exclusively as a research compound and must not be marketed or used for diagnostic, therapeutic, or consumption purposes.
This product is not for human consumption. It is sold strictly for research and educational purposes and is not intended to diagnose, treat, cure, or prevent any disease.
Any clinical data or research information referenced on this page is derived from peer-reviewed scientific literature and official publications. This information is provided for educational reference only and does not constitute medical advice or product claims.
By purchasing this product, you acknowledge that you are a qualified researcher and agree to use it in full compliance with all applicable laws and regulations.
