Immune System
Peptides that modulate immune function and inflammation
18 peptide profiles in this category. Browse the full directory to explore all 167 research peptides.
Vilon
A dipeptide (Lys-Glu) immune bioregulator and longevity peptide from the Khavinson series - one of the simplest yet most studied peptide bioregulators for immune function and lifespan.
Endoluten
Endoluten is a Khavinson peptide bioregulator derived from the neuroendocrine (pineal-hypothalamic) complex. Proposed to restore circadian rhythmicity, support melatonin biosynthesis, and modulate neuroendocrine aging. Used alongside Epithalon.
PNC-27
A 32-amino acid cancer research peptide containing a p53 HDM2-binding domain that selectively targets and destroys cancer cells by binding HDM2 on their membranes and inducing necrosis.
Thymosin Alpha-1
A 28-amino acid thymic peptide that is the most studied immune-regulatory peptide — used clinically across 35+ countries for chronic infections, cancer adjunct therapy, and immune deficiencies.
VIP
Vasoactive Intestinal Peptide — a 28-amino acid neuropeptide with powerful anti-inflammatory, pulmonary vasodilatory, and circadian regulatory effects.
ACTH 1-24 (Cosyntropin)
ACTH 1-24 (cosyntropin, tetracosactide) is the synthetic 24-aa N-terminal ACTH fragment retaining full biological activity. It stimulates MC2R receptors on the adrenal cortex to drive cortisol synthesis. Primarily used diagnostically in the cosyntropin stimulation test.
Taxorest
Taxorest is a Khavinson short peptide bioregulator for the tracheal and bronchial epithelium. Proposed to support respiratory tract cell regeneration and gene expression in lung tissue aging. Used alongside Chonluten in pulmonary anti-aging protocols.
Chonluten
A Russian tripeptide bioregulator (Gly-Glu-Pro) targeting bronchopulmonary tissue - supporting lung function, mucosal health, and respiratory recovery.
FOXO4-DRI
A D-amino acid retro-inverso peptide designed to selectively eliminate senescent cells by disrupting the FOXO4-p53 interaction that keeps them alive.
SHLP-2 (Small Humanin-Like Peptide 2)
SHLP-2 is a 12-aa mitochondrial-derived peptide (MDP) encoded in the 12S rRNA mitochondrial gene. More potent than humanin, it reduces oxidative stress, inhibits beta-amyloid-induced apoptosis, and promotes cell survival. Plasma levels decline with age.
Epitalon (Epithalon)
A tetrapeptide known as the 'fountain of youth peptide' for its telomere-lengthening and anti-aging properties.
NMN (Nicotinamide Mononucleotide)
NMN is a direct NAD+ precursor nucleotide that raises cellular NAD+ more efficiently than NR in some tissues. Human trials at 250-600 mg daily show improved muscle insulin sensitivity and reduced biological aging markers.
Urocortin
Urocortin is a 40-aa CRF-family peptide that activates both CRF-R1 and CRF-R2 receptors. It modulates stress responses, anxiety, appetite suppression, cardiac function (positive inotropy via CRF-R2), and immune regulation.
Thymalin
A natural thymus peptide complex that restores thymic function and immune competence - particularly studied for immune reconstitution in ageing and immunodeficiency.
Thymagen
A dipeptide thymic bioregulator (Glu-Trp / Oglufanide) that modulates immune cell cyclic nucleotide signalling, enhancing natural defence mechanisms and T-cell regulation.
NR (Nicotinamide Riboside)
NR is a vitamin B3 form and NAD+ precursor that reliably elevates whole blood NAD+ by 40-90% in human trials at 250-1000 mg daily. It activates sirtuins and is well studied for metabolic and mitochondrial health.
ARA-290 (Cibinetide)
An engineered non-haematopoietic erythropoietin peptide analogue that activates tissue-protective receptors without stimulating red blood cell production.
Bronchogen
A tetrapeptide lung bioregulator (Ala-Glu-Asp-Leu) from the Khavinson series that regulates pulmonary gene expression, reduces lung inflammation, and supports bronchopulmonary tissue integrity.
Research Tools
Use these tools to plan and compare Immune System protocols.