







CJC-1295 with DAC
CJC-1295 with DAC from Super Human Peptides UK is a highly advanced, synthetic Growth Hormone-Releasing Hormone (GHRH) analogue. While standard GHRH analogues are destroyed by enzymes within minutes, this specific sequence features a revolutionary structural modification known as a Drug Affinity Complex (DAC). In laboratory research, CJC-1295 with DAC serves as a premier model for investigating sustained, long-term elevations in Growth Hormone (GH) and Insulin-like Growth Factor 1 (IGF-1).
Researchers utilize this peptide because the DAC component (a maleimidopropionic acid linker) actively binds to circulating serum albumin immediately upon entering the bloodstream. This bioconjugation physically shields the peptide from enzymatic degradation, extending its half-life from mere minutes to up to 8 days. Rather than creating short, intense pulses of growth hormone, this extended half-life creates a continuous, elevated "bleed" of GH.
Produced under GMP-compliant conditions and verified for 99% purity or higher, CJC-1295 with DAC is an elite tool for advanced preclinical research into severe GH deficiencies, lipodystrophy, and chronic systemic recovery.
- —Albumin Bioconjugation: Features a DAC linker that binds to natural blood proteins, shielding the peptide from rapid destruction.
- —Massive Half-Life Extension: Extends the active biological half-life to approximately 6-8 days following a single administration.
- —Continuous GH Bleed: Generates a sustained, non-pulsatile elevation of Growth Hormone and IGF-1, contrasting the natural pulsatile rhythm of the pituitary gland.
- —GHRH Analogue: Contains a highly modified 29-amino-acid sequence (tetrasubstituted) to prevent early cleavage by the DPP-4 enzyme.
- —High Purity: 99% purity or higher (verified by HPLC and MS analysis).
- —Quality Standard: GMP / ISO certified manufacturing.
- —Pharmacokinetics of Bioconjugation: Studying how the reactive maleimide group covalently bonds to the free thiol of Cys34 on human serum albumin to achieve extreme stability.
- —Sustained IGF-1 Modeling: Measuring the downstream, dose-dependent, and continuous elevation of Insulin-like Growth Factor 1 in the liver over a prolonged 7-to-14-day observation window. Pulsatile vs.
- —Continuous GH Secretion: Investigating the physiological differences and potential receptor desensitization when exposing tissues to a constant GH bleed versus natural, episodic pulses.
- —Lipodystrophy and Visceral Fat: Preclinical models exploring the continuous mobilization and oxidation of visceral adipose tissue driven by permanently elevated basal metabolic rates.
- —Systemic Atrophy Recovery: Evaluating the preservation of lean muscle mass and the acceleration of protein synthesis in chronic wasting models.
CJC-1295 with DAC was developed by the Canadian biotechnology company ConjuChem to solve the fundamental problem of peptide instability. Natural GHRH is destroyed by enzymes almost instantly, making it useless for long-term modeling. By engineering the Drug Affinity Complex technology, ConjuChem created a peptide that effectively hitchhikes on the body's own blood cells.
In landmark clinical and laboratory modeling, the results of this bioconjugation were unprecedented. In foundational studies, a single dose of CJC-1295 with DAC was shown to increase mean plasma GH concentrations by 2- to 10-fold for over 6 days, and it increased circulating IGF-1 levels by 1.5- to 3-fold for up to 14 days.
Because it uniquely alters the rhythm of the pituitary gland—forcing a sustained release rather than a temporary spike—it remains a highly specialized and heavily studied compound in modern endocrinology and anti-aging research.
- 1.Teichman, S.L. et al., "Prolonged stimulation of growth hormone (GH) and insulin-like growth factor I secretion by CJC-1295, a long-acting analog of GH-releasing hormone, in healthy adults," The Journal of Clinical Endocrinology & Metabolism, 2006.
- 2.Ionescu, M. et al., "Sustained efficacy and safety of a long-acting growth hormone-releasing hormone preparation (CJC-1295) in patients with HIV-lipodystrophy," Clinical Infectious Diseases, 2006.
- 3.Jette, L. et al., "Human growth hormone-releasing hormone (hGHRH) 1-29-albumin bioconjugates activate the GRF receptor on the anterior pituitary in rats," Endocrinology, 2005.
- 4.Sackmann-Sala, L. et al., "Activation of the GH/IGF-1 axis by CJC-1295, a long-acting GHRH analog," Pituitary, 2009.


