CJC-1295 is a synthetic peptide that acts on the growth hormone (GH) axis. Researchers study it to better understand GH release, receptor dynamics, and the related biology. It is strictly for research use only. Dynamite Research Peptides supplies CJC-1295 for laboratory work.
Research Background
CJC-1295 grew out of efforts to get past the limits of native growth hormone-releasing hormone (GHRH), which has a very short half-life in vivo and can't sustain GH stimulation for long. It's a modified GHRH analog with a lysine-based carrier peptide that extends how long it stays active — a large increase in half-life over native GHRH, allowing more prolonged, consistent GH release. Work on GHRH analogs began in the late 1980s and early 1990s, and CJC-1295 was a notable step forward. Its structure also lets it interact with somatostatin receptors, which plays a part in its extended action.
Mechanism of Action
CJC-1295 works mainly through the growth hormone-releasing hormone receptor (GHRHR) on somatotroph cells in the pituitary. Activating that receptor sets off intracellular signaling that releases stored GH. The lysine-based carrier peptide bonded to the GHRH sequence is what extends its half-life: it binds albumin in the bloodstream, shielding CJC-1295 from enzymatic breakdown and keeping it in circulation longer. CJC-1295 also interacts with somatostatin receptors (SSTRs). That interaction doesn't directly trigger GH release, but it adds to the peptide's prolonged activity by shifting the feedback mechanisms that regulate GH secretion.
Published Research Overview
Several published studies have examined the characteristics and effects of CJC-1295:
"Human growth hormone-releasing factor (hGRF)1-29-albumin bioconjugates activate the GRF receptor on the anterior pituitary in rats: identification of CJC-1295 as a long-lasting GRF analog" (Jetté et al., Endocrinology*, 2005;146(7):3052-3058): The original characterization of the compound, identifying CJC-1295 as a long-lasting GRF analog acting at the pituitary GRF receptor in rats. [https://pubmed.ncbi.nlm.nih.gov/15817669/]
"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" (Teichman et al., Journal of Clinical Endocrinology & Metabolism*, 2006;91(3):799-805): A study in healthy adults reporting prolonged stimulation of GH and IGF-I secretion. [https://pubmed.ncbi.nlm.nih.gov/16352683/]
"Once-daily administration of CJC-1295, a long-acting growth hormone-releasing hormone (GHRH) analog, normalizes growth in the GHRH knockout mouse" (Alba et al., American Journal of Physiology - Endocrinology and Metabolism*, 2006;291(6):E1290-4): An animal-model study of once-daily administration in GHRH knockout mice. [https://pubmed.ncbi.nlm.nih.gov/16822960/]
Storage & Handling
Dynamite Research Peptides supplies CJC-1295 in lyophilized (freeze-dried) form. Store it at -20°C or below to keep it stable. Reconstitute right before use with a sterile solvent appropriate to your protocol, and avoid repeated freeze-thaw cycles, which degrade the peptide. Handle it in a properly equipped lab following standard safety protocols.
Conclusion
CJC-1295 gives researchers a way to study growth hormone regulation, and its extended half-life suits a range of experimental designs. Consistent purity matters for reproducible results, which is why every batch ships with third-party testing and a Certificate of Analysis (COA).
Frequently Asked Questions
Q: What is the purity level of Dynamite Research Peptides' CJC-1295?
A: Our CJC-1295 typically exceeds 99% purity, as detailed in the accompanying Certificate of Analysis (COA).
Q: Does Dynamite Research Peptides provide Certificates of Analysis (COAs) for its CJC-1295?
A: Yes. Every batch of CJC-1295 comes with a COA detailing purity, mass spectrometry results, and other analytical data.
Q: What are the potential research applications for CJC-1295?
A: It is used to study growth hormone release mechanisms, receptor interactions, and the effects of prolonged GH stimulation.
All products are for research use only — not for human or animal consumption.