IGF-1 LR3 Receptor Grade

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IGF-1 LR3 is a modified form of insulin-like growth factor-1 designed to alter its interaction with IGF-binding proteins and extend its biological activity. It is widely studied in laboratory and analytical research involving IGF signaling.

IGF-1 LR3 is also referred to as Long R3 IGF-1 or Long R3 IGF-I.

Product Information

Long R3 IGF-1 contains modifications to the native IGF-1 structure that change its binding characteristics. The “receptor grade” designation describes a product specification rather than an established clinical standard.

How It Works

IGF-1 LR3 interacts with the IGF-1 receptor and related growth-factor pathways. Structural modifications can reduce binding to certain IGF-binding proteins, potentially increasing the availability of active peptide.

POTENTIAL BENEFITS

1. IGF-1 Receptor Research

IGF-1 LR3 provides a research model for examining activation of IGF-1 receptor signaling and downstream cellular pathways.

2. Growth-Factor Research

The IGF system influences cellular growth, differentiation, and metabolism, making Long R3 IGF-1 relevant to a broad range of biological research.

3. Muscle Signaling Research

IGF-1 signaling is involved in muscle protein synthesis and satellite-cell activity, supporting research into skeletal-muscle adaptation and growth.

4. Analytical & Pharmacokinetic Research

Synthetic IGF-1 analogues such as Long R3 IGF-I can be differentiated analytically from endogenous IGF-1, making them relevant to pharmacokinetic and anti-doping research.

Dosage

There is no established therapeutic human dosage for IGF-1 LR3. Published work involving synthetic IGF-1 analogues does not establish a standardized dosing protocol for the receptor-grade research product.

Side Effects

Potential concerns associated with excessive IGF signaling include hypoglycemia, edema, tissue-growth effects, and disruption of normal endocrine signaling. Long-term safety of non-approved IGF-1 analogues has not been established.

References

1. PubMed — LongR3-IGF-I, R3-IGF-I and Des1-3 IGF-I analysis
2. PubMed — IGF-1 analogue and binding-protein research

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