Modified GRF (1-29) 2mg (CJC-1295 without DAC)
Overview
Modified GRF (1-29), also known as CJC-1295 without DAC, is a synthetic peptide derived from the growth hormone-releasing hormone (GHRH) sequence. Designed to stimulate the endogenous release of growth hormone (GH) from the pituitary gland, this peptide has become a focus of scientific research in areas such as muscle growth, fat metabolism, cellular repair, and age-related physiological decline.
Unlike its DAC-conjugated counterpart, Modified GRF (1-29) does not contain the Drug Affinity Complex (DAC), resulting in a shorter biological half-life but a more natural pulsatile GH release pattern that mimics the body’s physiological secretion rhythm.
Research Background
Growth hormone (GH) plays a critical role in metabolism, cell regeneration, and body composition. Researchers have long sought methods to regulate its secretion safely and effectively. Modified GRF (1-29) is a tetrasubstituted GHRH analogue engineered to be more stable than the native peptide, yet without DAC to preserve short, natural signalling pulses.
This configuration is of particular interest in studies exploring endocrine modulation, tissue recovery, and age-related GH decline, as it avoids receptor desensitisation often associated with continuous GH exposure.
Mechanism of Action
Modified GRF (1-29) binds to GHRH receptors in the anterior pituitary, initiating a cascade that promotes the release of endogenous growth hormone. Research suggests that this process results in pulsatile GH secretion, closely mirroring the body’s natural cycles.
By enhancing GH output rather than replacing it exogenously, Modified GRF (1-29) allows for regulated, receptor-sensitive release. This mechanism differentiates it from other compounds that sustain unnaturally prolonged GH levels.
Research Focus Areas of Interest
-
Muscle Growth and Recovery
Growth hormone plays a known role in protein synthesis and tissue repair. Modified GRF (1-29) has been studied for its influence on GH-mediated anabolic processes, potentially supporting muscle regeneration and post-exertion recovery. -
Fat Metabolism
GH also exerts lipolytic effects, stimulating the breakdown of stored fat for energy. Research into Modified GRF (1-29) explores its potential to influence body composition through enhanced fat utilisation. -
Cellular Repair and Regeneration
Scientific interest includes the peptide’s indirect role in cellular renewal and tissue maintenance, aligning with GH’s established physiological pathways. -
Age-Related Endocrine Function
As natural GH levels decline with age, Modified GRF (1-29) is being studied for its capacity to modulate age-associated changes in growth hormone secretion, offering a model for understanding age-related endocrine decline.
Technical Details
- Synonyms: Mod-GRF (1-29), Modified GRF (1-29), CJC-1295 without DAC
- Sequence: YADAIFTNSYRKVLGQLSARKLLQDIMSR
- IUPAC Condensed: H-Tyr-Ala-Asp-Ala-Ile-Phe-Thr-Asn-Ser-Tyr-Arg-Lys-Val-Leu-Gly-Gln-Leu-Ser-Ala-Arg-Lys-Leu-Leu-Gln-Asp-Ile-Met-Ser-Arg-NH₂
- Molecular Weight: 3367.95 g/mol
- CAS Number: 863288-34-0
- PubChem CID: 91976842
- Further References: PubChem
Stability and Storage
Store lyophilised protein at –20 °C. Aliquot after reconstitution to avoid repeated freezing/thawing cycles.
Once reconstituted, the solution may be stored at 4 °C for a limited period. The lyophilised peptide remains stable until the expiry date when stored correctly at –20 °C.
Source and Reconstitution
Source: Biosynthesis
Reconstitution: Reconstitute with Bacteriostatic Water
Usage
This product is prepared for laboratory research only.
Modified GRF (1-29) for sale at Pure Peptides UK is intended exclusively for scientific and educational use.
Only purchase Modified GRF (1-29) if you are a licensed researcher.
