Natural Killer Cell Activator
NK Peptide is a targeted immunomodulatory compound that activates natural killer cells, the immune system's first-line defence against viral infections and abnormal cells, and prevents them from becoming exhausted in chronic inflammatory environments. NK cell activity declines significantly with age, making its restoration a key intervention for both longevity and ongoing immune defence.
Product
Research shows
Practical product identifiers and format details for professional review.
Content
15 mg
Format
Injectable
Composition
5 mg/ml per ml
NK Peptide activates key intracellular signalling pathways in NK cells, including JAK-STAT and MAPK cascades, promoting NK cell proliferation, enhanced expression of cytotoxic granule proteins (perforin, granzyme B), and upregulation of activating surface receptors (NKG2D, NKp46). This increases the probability that NK cells will recognise and eliminate target cells displaying stress ligands or viral antigens. Simultaneously, NK Peptide modulates regulatory signalling to prevent NK cell exhaustion in chronic inflammatory environments, maintaining sustained cytotoxic capacity over time.
Based on published research and preclinical data. All benefits are documented under research-grade conditions.
NK cells are the immune system's rapid-response first-line defence against viral infection and nascent malignancy. Unlike T-cells, which require prior sensitisation, NK cells can kill abnormal targets without being trained: making their activity level critical for continuous immune surveillance.
NK Peptide increases expression of perforin and granzyme B: the molecular weapons NK cells use to puncture and destroy infected or malignant cells. Higher granule expression directly translates to more effective target cell elimination.
By upregulating NKG2D and NKp46 activating receptors, NK Peptide increases the probability that NK cells will engage and eliminate cells displaying stress ligands: a key surveillance mechanism for both viral infections and early cancer.
Chronic inflammation causes NK cell exhaustion: a state of reduced cytotoxic function seen in chronic viral infection, cancer, and aging. NK Peptide's regulatory modulation helps prevent this exhaustion, maintaining sustained NK activity in challenging immune environments.
NK cell number and function decline significantly with age: a process called NK cell senescence. This decline correlates with increased susceptibility to viral infection and cancer. NK Peptide-mediated restoration of NK activity is therefore particularly relevant for longevity-oriented immune protocols.
NK Peptide addresses the innate immune arm (NK cells) while Thymosin Alpha-1, Thymalin, and Thymogen primarily support the adaptive T-cell arm. Used together, they provide comprehensive immune support across both branches of the immune system.
Explore selected publications on NK Peptide, with links to the original sources.
5 publications from the research library.
Evidence type
Publication and key finding
Source
Evidence type
Review
Peptide-specific NK-receptor evidence review
Publication and key finding
The review identifies natural-killer-cell receptors that recognize specific HLA-presented peptide sequences and explains how this selectivity can support pathogen surveillance.
Oxford open immunology
Evidence type
Published research
NK-activating peptide discovery evidence
Publication and key finding
A high-throughput HLA-E screen identified 500 candidate peptides, including ligands that selectively activated NKG2C-positive natural killer cells.
Nature communications
Evidence type
Published research
Human peptide-specific adaptive NK evidence
Publication and key finding
Distinct cytomegalovirus UL40 peptides controlled expansion and differentiation of adaptive NKG2C-positive natural killer-cell populations.
Nature immunology
Evidence type
Review
Peptide-dependent NK-recognition review
Publication and key finding
This review shows that inhibitory and activating NK receptors can distinguish peptide motifs within MHC-I complexes, altering the balance of NK-cell activation and inhibition.
Frontiers in immunology
Evidence type
Review
Peptide-tuned NK-signalling review
Publication and key finding
The review describes how HLA-bound peptides tune KIR and CD94:NKG2 receptor signalling, allowing natural killer cells to sense changes in cellular peptide repertoires.
Immunological reviews
Labbieux pens are designed for 30 to 31 administrations of 10 clicks. With daily use, this corresponds to approximately one month. We recommend starting with 5 clicks and building up to 10 clicks per administration. More sensitive people may use fewer clicks.
Before using our pens, consult the manual.
NK Peptide has been formulated for research use with an expected tolerability profile consistent with targeted immunomodulatory peptides. As an NK cell activator, mild systemic immune activation (transient fatigue, low-grade fever) may occur during initial doses. Injection site reactions are possible. In individuals with autoimmune conditions, heightened NK activity could theoretically contribute to inflammatory activity and caution is advised. No significant hepatotoxicity, nephrotoxicity, or cardiovascular effects have been identified in available research. Cycling is recommended to maintain optimal receptor sensitivity.
This public COA documents one selected production batch and is updated annually. It is not the COA for our latest available batch. Every batch has its own documentation, and partners can request the latest batch COA from our team.
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