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NKR-P1 receptor (NKR-P1 (mouse), KLRB1 (human))
- Target
- NKR-P1 (mouse), KLRB1 (human)
- Molecular classification
- Receptor, C-type lectin-like receptor family, Cell surface protein
01
Overview
The NKR-P1 receptor is a C-type lectin-like cell surface receptor expressed on natural killer (NK) cells and some T cell subsets. It is involved in the recognition of carbohydrate ligands on target cells, triggers NK cell cytotoxicity, and induces the secretion of interferon-gamma (IFN-γ), which is vital for immune regulation and host defense against infection and cancer. Cross-linking of NKR-P1 on NK cells directly stimulates IFN-γ production through downstream signaling involving STAT4, NF-κB, and related pathways. Dysregulation or excessive activation of this pathway may contribute to immune-mediated pathologies.
- Other names
- NKRP1KLRB1 (human)NK1.1 (mouse epitope)
02
Mechanism of action
Agonism (stimulating NKR-P1 to induce cytotoxicity and IFN-γ production) Pathway modulation (e.g., enhancing STAT4 or NF-κB signaling in the context of NK cell activation)
03
Biological functions
Immune responseSignal transductionCytokine production (specifically IFN-γ)Cell-mediated cytotoxicityRegulation of T helper cell differentiation
04
Disease associations
Cancer (anti-metastatic processes)Infection (antiviral defense)Inflammation (modulation of immune response)
05
Safety considerations
Potential for excessive immune activation or cytokine release syndrome if pathways are overstimulatedAutoimmunity or off-target tissue damage due to nonspecific NK cell activation
06
Interacting drugs
No specific drugs directly targeting NKR-P1/KLRB1 are currently approved or widely documented in the literature; immunotherapies targeting NK cell activation are under investigation
07
Biomarkers
NK cell IFN-γ production (used as a functional marker in oncology and infectious disease immunophenotyping)KLRB1 expression (used to identify NK cell subsets)
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