NKp30, also referred to as natural cytotoxicity receptor 3 (NCR3), is a type I transmembrane receptor belonging to the immunoglobulin (Ig) superfamily that is expressed on resting and active natural killer (NK) cells with a role in triggering a cytotoxic response against tumor cells (1). The human NKp30 protein has six isoforms. The canonical isoform (NKp30a) is 177 amino acids (aa) in length with a theoretical molecular weight of 21.6 kDa (1,2). The NKp30 protein consists of a signal peptide, an Ig domain, a stalk region, a transmembrane domain, and an intracellular region (1-3). NKp30/NCR3 signaling relies on interaction with the immunoreceptor tyrosine-based activation motif (ITAM)-containing adaptor molecules CD3zeta and FcRgamma (1,4,5). Other NRC family members include NKp44 and NKp46 (1,3-6). NK cell activation and tumor surveillance occurs through receptor-ligand binding. Tumor-derived ligands for NKp30 include HLA-B-associated transcript 3 (BAT3)/Bcl2-associated anthogene 6 (BAG6) and B7-H6 (4-6). NKp30 has also been suggested to play a role in NK-dendritic cell (DC) crosstalk by promoting DC maturation and cytotoxicity of immature DCs, mediated in part by BAT3 (1,4,5).

Given its role in NK cell-mediated killing and activation, NKp30 is a potential target for cancer immunotherapies (6). For instance, Bi-specific T cell engagers (BiTE) is one immunotherapy approach targeting the NKp30/B7-H6 interaction where B7-H6-specific BiTE elicits an attack on tumor cells through interferon gamma (IFNgamma) production and T cell cytotoxicity (1). Another potential approach is NKp30-derived chimeric antigen receptors (CARs) where CAR-T cells that express chimeric NKp30 receptors can efficiently attack B7-H6 tumor cells (1,6).

References

1. Barrow, A. D., Martin, C. J., & Colonna, M. (2019). The natural cytotoxicity receptors in health and disease. Frontiers in Immunology, 10, 909. https://doi.org/10.3389/fimmu.2019.00909

2. Uniprot (O14931)

3. Luczo, J. M., Ronzulli, S. L., & Tompkins, S. M. (2021). Influenza A virus hemagglutinin and other pathogen glycoprotein interactions with NK cell natural cytotoxicity receptors NKp46, NKp44, and NKp30. Viruses, 13(2), 156. https://doi.org/10.3390/v13020156

4. Pazina, T., Shemesh, A., Brusilovsky, M., Porgador, A., & Campbell, K. S. (2017). Regulation of the Functions of natural cytotoxicity receptors by interactions with diverse ligands and alterations in splice variant expression. Frontiers in Immunology, 8, 369.

5. Kaifu, T., Escaliere, B., Gastinel, L. N., Vivier, E., & Baratin, M. (2011). B7-H6/NKp30 interaction: a mechanism of alerting NK cells against tumors. Cellular and Molecular Life Sciences : CMLS, 68(21), 3531-3539. https://doi.org/10.1007/s00018-011-0802-7

6. Pinheiro, P. F., Justino, G. C., & Marques, M. M. (2020). NKp30 - A prospective target for new cancer immunotherapy strategies. British Journal of Pharmacology, 177(20), 4563-4580. https://doi.org/10.1111/bph.15222

Alternate Names

CD337, NCR3

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NCR3

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Product Specific Notices for NKp30/NCR3 Antibody (MM0490-9D31) [Alexa Fluor® 594]

Alexa Fluor (R) products are provided under an intellectual property license from Life Technologies Corporation. The purchase of this product conveys to the buyer the non-transferable right to use the purchased product and components of the product only in research conducted by the buyer (whether the buyer is an academic or for-profit entity). The sale of this product is expressly conditioned on the buyer not using the product or its components, or any materials made using the product or its components, in any activity to generate revenue, which may include, but is not limited to use of the product or its components: (i) in manufacturing; (ii) to provide a service, information, or data in return for payment; (iii) for therapeutic, diagnostic or prophylactic purposes; or (iv) for resale, regardless of whether they are resold for use in research. For information on purchasing a license to this product for purposes other than as described above, contact Life Technologies Corporation, 5791 Van Allen Way, Carlsbad, CA 92008 USA or outlicensing@lifetech.com. This conjugate is made on demand. Actual recovery may vary from the stated volume of this product. The volume will be greater than or equal to the unit size stated on the datasheet.

This product is for research use only and is not approved for use in humans or in clinical diagnosis. Primary Antibodies are guaranteed for 1 year from date of receipt.

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NKp30/NCR3 Antibody (MM0490-9D31) [Alexa Fluor® 594]

Novus Biologicals, part of Bio-Techne | Catalog # NBP2-11819AF594

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