Peptable

Comparison

CJC-1295 vs Selank

Function

While CJC-1295 is used in research to chronically elevate endogenous growth hormone and IGF-1 levels, enabling studies of body composition, metabolic, and anti-aging effects of prolonged GH exposure10, Selank is a peptide developed in Russia as an anxiolytic and nootropic; in animal models it reduces anxiety-like behavior and modulates immune parameters under stress39.

Mechanism

While CJC-1295 works as a tetrasubstituted 29-amino-acid analog of GHRH(1–29) that acts as a potent agonist at the GHRH receptor and, in its DAC form, covalently binds serum albumin to extend half-life from minutes to days, resulting in sustained pulsatile GH and IGF-1 increase1082, Selank is a synthetic heptapeptide, Thr-Lys-Pro-Arg-Pro-Gly-Pro, that combines a tuftsin fragment with a Pro-Gly-Pro motif and is reported to modulate GABAergic neurotransmission and cytokine balance while being resistant to proteolytic degradation39.

Receptor

CJC-1295

Growth hormone–releasing hormone receptor (GHRHR) on anterior pituitary somatotrophs1094103

Selank

Not clearly established in the current dataset.

Organism or Origin

CJC-1295

Synthetic peptide based on human hypothalamic GHRH10120

Selank

Synthetic analog of the IgG-derived tetrapeptide tuftsin39

Gene

CJC-1295

GHRH

Selank

Not assigned in the current dataset.

Summary

CJC-1295 and Selank are noticeably different, with limited direct overlap in their usual biological context. Their typical research and application settings separate fairly clearly: CJC-1295 is more often discussed in the realm of Metabolic and endocrine and Aging and longevity, whereas Selank is more often associated with the realm of Neurology and brain health and Immunology and inflammation. They also influence different molecular systems, with CJC-1295 tracking more closely to Growth hormone axis while Selank centers more on GPCR receptor. Both are synthetic in origin with CJC-1295 in Preclinical development and Selank approved for Research use only. CJC-1295 takes the form of a peptide conjugate, whereas Selank is closer to a linear peptide, CJC-1295 incorporates d-amino acid substitution features that are not part of Selank; while their sequence patterns also diverge, with CJC-1295 showing alpha-helical domain features and Selank showing proline-rich features.

Sources

10CJC-1295: Long-Acting GHRH Analog - Alpha Carbon Labs, https://alphacarbonlabs.com/blog/cjc-1295-long-acting-ghrh-analog
82CJC-1295 no DAC 5mg (Mod GRF 1-29), https://www.peptidesciences.com/mod-grf-1-29-5mg-cjc-1295-no-dac
94Growth-hormone-releasing hormone receptor - Wikipedia, https://en.wikipedia.org/wiki/Growth-hormone-releasing_hormone_receptor
103Growth-hormone-releasing hormone receptor - Wikipedia, https://en.wikipedia.org/wiki/Growth_hormone_releasing_hormone_receptor
120Growth hormone–releasing hormone - Wikipedia, https://en.wikipedia.org/wiki/Growth_hormone%E2%80%93releasing_hormone
39Application of thr-lys-pro-arg-pro-gly-pro peptide (selank) for ..., https://patents.google.com/patent/RU2629832C1/en