Human PBMCs were stained with 5 uL Anti-human CD3 antibody [clone OKT3] conjugated to APC (solid line) or 0.25 ug APC Mouse IgG1 isotype control (dashed line). Flow Cytometry Data from 10,000 events.

Human Anti-CD161 Antibody [HP-3G10]

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Species: Human
Tested Applications: Flow Cytometry
Available Conjugates: FITC ;Unconjugated ;APC ;PerCP-Cy5.5 ;PE ;V450
Isotype: Mouse IgG1 kappa
Mass Spec Validated?: Not MS Validated

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Datasheets and Documentation
Product Datasheet
SKU: QAB60-F-25Tests
CD161 General Information
Alternate Names
Curated Database and Bioinformatic Data
Gene SymbolKLRB1
Entrez Gene ID3820
Ensemble Gene IDENSG00000111796
RefSeq Protein Accession(s)NP_002249
RefSeq mRNA Accession(s)NM_002258
RefSeq Genomic Accession(s)NC_018923, NC_000012
UniProt ID(s)Q12918
UniGene ID(s)Q12918
HGNC ID(s)6373
Cosmic ID(s)KLRB1
KEGG Gene ID(s)hsa:3820
PharmGKB ID(s)PA30162
General Description of CD161.
The HP-3G10 antibody is specific for human CD161, also known as NKR-P1A, a type II transmembrane lectin-like receptor and member of the killer cell lectin-like receptor (KLR) family. CD161 exists as a homodimer which is prominently expressed on natural killer (NK) and NKT cells, where it is proposed to regulate the function of both cell types. CD161 is also found on T cell subsets, including T regulatory cells (Tregs), memory/effector CD4+ T cells, and CD8+ T cells. Th17 cells have been demonstrated to co-express CD161, as surface IL-17A+ cells are contained within the CD161+ fraction of CD4 T cells, so that CD161 (in combination with CCR6) is often used as a marker for enrichment of Th17 cells.The HP-3G10 antibody may be used for flow cytometric analysis of CD161 on NK and NKT cells, as well as on various T cell subsets. The antibody is also reported to be cross-reactive with Baboon, Chimpanzee and Rhesus CD161.

Human Anti-CD161 Antibody Product Attributes

Species: Human
Cross Reactivity: chimpanzee, baboon, rhesus macaque
Tested Applications: Flow Cytometry.
Application Notes: 5 ul per test where one test represents staining of a cell sample in a final volume of approximately 100 uL. The number of cells within a sample must be experimentally determined, but ranges between 1x105 to 1x108 cells.
Clonality: Monoclonal Antibody
Anti-CD161 Antibody Clone: HP-3G10
Clone HP-3G10 Host and Isotype: Mouse IgG1 kappa
Buffer and Stabilizer: 10 mM NaH2PO4, 150 mM NaCl, 0.09% NaN3, 0.1% gelatin, pH7.2
Antibody Concentration: 5 uL /test
Storage Conditions: 2-8C protected from light. Stable for 12 Months. Do Not Freeze.

CD161 Previously Observed Antibody Staining Patterns

Observed Antibody Staining Data By Tissue Type:

Variations in CD161 antibody staining intensity in immunohistochemistry on tissue sections are present across different anatomical locations. An intense signal was observed in cells in the red pulp in spleen, cells in the tubules in kidney, fibroblasts in skin, glandular cells in the epididymis and prostate, hematopoietic cells in the bone marrow and myocytes in heart muscle. More moderate antibody staining intensity was present in cells in the red pulp in spleen, cells in the tubules in kidney, fibroblasts in skin, glandular cells in the epididymis and prostate, hematopoietic cells in the bone marrow and myocytes in heart muscle. Low, but measureable presence of CD161 could be seen in cells in the granular layer in cerebellum, cells in the molecular layer in cerebellum, cells in the white pulp in spleen, endothelial cells in the colon, fibroblasts in mesenchymal tissue, germinal center cells in the tonsil, glandular cells in the cervix, uterine, endometrium, salivary gland and thyroid gland, glial cells in the hippocampus, lymphoid tissue in appendix, neuronal cells in the hippocampus, neuropil in cerebral cortex, peripheral nerve in mesenchymal tissue, peripheral nerve/ganglion in colon, pneumocytes in lung and respiratory epithelial cells in the nasopharynx. We were unable to detect CD161 in other tissues. Disease states, inflammation, and other physiological changes can have a substantial impact on antibody staining patterns. These measurements were all taken in tissues deemed normal or from patients without known disease.

Observed Antibody Staining Data By Tissue Disease Status:

Tissues from cancer patients, for instance, have their own distinct pattern of CD161 expression as measured by anti-CD161 antibody immunohistochemical staining. The average level of expression by tumor is summarized in the table below. The variability row represents patient to patient variability in IHC staining.

Sample Type breast cancer carcinoid cervical cancer colorectal cancer endometrial cancer glioma head and neck cancer liver cancer lung cancer lymphoma melanoma ovarian cancer pancreatic cancer prostate cancer renal cancer skin cancer stomach cancer testicular cancer thyroid cancer urothelial cancer
Signal Intensity ++ ++ + ++ + + ++ + + - + + ++ ++ + + + ++ ++ +
KLRB1 Variability ++ ++ ++ ++ ++ ++ ++ ++ ++ + ++ ++ ++ + ++ ++ ++ + ++ ++

Selected References

Yamada H, Nakashima Y, Okazaki K, Mawatari T, Fukushi J-I, Oyamada A, Fujimura K, Iwamoto Y, and Yoshikai Y. 2011. J. Rheumatol. 38: 1569-1575. (Flow cytometry)Fogal B, Yi T, Wang C, Rao DA, Lebastchi A, Kulkarni S, Tellides G, and Pober JS. 2011. J. Immunol. 187: 6268-6280. (in vitro depletion)Pozo, D, Vales-Gomez, Mavaddat N, Williamson SC, Chisholm SE, and Reyburn H. 2006. J. Immunol. 176: 2397-2406. (Western blot)Exley M, Porcelli S, Furman M, Garcia J, and Balk S. 1998. J. Exp. Med. 188: 867-876. (in vitro blocking, Western blot)

Limitations and Warranty

enQuire Bio's Human Anti-CD161 Monoclonal is available for Research Use Only. This antibody is guaranteed to work for a period of two years when properly stored.

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