-
Your selected country is
Portugal
- Change country/language
Old Browser
This page has been recently translated and is available in French now.
Looks like you're visiting us from {countryName}.
Would you like to stay on the current country site or be switched to your country?
Multiparameter flow cytometric analysis using BD OptiBuild™ BV421 Mouse Anti-Mouse Ly-49A antibody (Cat. No. 742364) on live C57BL/6 mouse splenocytes. Flow cytometry was performed using a BD LSRFortessa™ Flow Cytometer System.
BD OptiBuild™ BV421 Mouse Anti-Mouse Ly-49A
Regulatory Status Legend
Any use of products other than the permitted use without the express written authorization of Becton, Dickinson and Company is strictly prohibited.
Preparation And Storage
Recommended Assay Procedures
For optimal and reproducible results, BD Horizon Brilliant Stain Buffer should be used anytime two or more BD Horizon Brilliant dyes (including BD OptiBuild Brilliant reagents) are used in the same experiment. Fluorescent dye interactions may cause staining artifacts which may affect data interpretation. The BD Horizon Brilliant Stain Buffer was designed to minimize these interactions. More information can be found in the Technical Data Sheet of the BD Horizon Brilliant Stain Buffer (Cat. No. 563794).
Product Notices
- This antibody was developed for use in flow cytometry.
- The production process underwent stringent testing and validation to assure that it generates a high-quality conjugate with consistent performance and specific binding activity. However, verification testing has not been performed on all conjugate lots.
- Researchers should determine the optimal concentration of this reagent for their individual applications.
- An isotype control should be used at the same concentration as the antibody of interest.
- Caution: Sodium azide yields highly toxic hydrazoic acid under acidic conditions. Dilute azide compounds in running water before discarding to avoid accumulation of potentially explosive deposits in plumbing.
- For fluorochrome spectra and suitable instrument settings, please refer to our Multicolor Flow Cytometry web page at www.bdbiosciences.com/colors.
- Please refer to www.bdbiosciences.com/us/s/resources for technical protocols.
- BD Horizon Brilliant Stain Buffer is covered by one or more of the following US patents: 8,110,673; 8,158,444; 8,575,303; 8,354,239.
- BD Horizon Brilliant Violet 421 is covered by one or more of the following US patents: 8,158,444; 8,362,193; 8,575,303; 8,354,239.
- Pacific Blue™ is a trademark of Molecular Probes, Inc., Eugene, OR.
Companion Products
The A1 monoclonal antibody specifically binds to the Ly-49A[B6] alloantigen, an inhibitory receptor that is expressed on subsets of natural killer (NK) cells and NK-1.1-positive T lymphocytes (NKT cells) in C57BL/6, C57BL/10, and B10 congenic mice, on a population of memory CD8+ T lymphocytes and NK1.1+ γδ T cells in C57BL/6 mice, and on a distinct subset of B-1 cells (CD5+B220[lo]) of C57BL/6 mice. The A1 antibody has also been reported to crossreact with Ly-49ANOD, Ly-49PNOD, Ly-49P129/J, and Ly-49V129/J alloantigens. The proportion of NKT cells expressing Ly-49A is higher (2-5 fold) in thymus than in liver (immature and mature NKT cells, respectively), and there is evidence that the down regulation of Ly-49 receptor expression is necessary for normal NKT cell development to occur. Most NK cells express a single allele of Ly-49A, although occasionally they may express more than one allele. The Ly-49 family of NK-cell receptors, members of the C-type lectin superfamily, are disulfide-linked type-II transmembrane protein homodimers with extracellular carbohydrate-recognition domains (CRD) that bind to MHC class I alloantigens. The A1 antibody is specific for the Ly-49A[B6] CRD. The Ly-49 family members are expressed independently, such that an individual NK or T cell may display more than one class of Ly-49 receptor homodimers. The Ly-49A[B6] allonantigen binds to H-2D[d], H-2D[k], and H-2D[p], and the A1 antibody blocks this binding. Binding of Ly-49A[B6] to lyphoblasts expressing MHC class I antigens of the f, q, r, s, and v haplotypes has also been demonstrated. The levels of the Ly-49 inhibitory receptors are down-regulated by their ligands in vivo, and various levels of expression of a Ly-49 inhibitory receptor may affect the specificity of NK cells. In vitro studies suggest that the Ly-49A receptor mediates negative regulation of NK-cell cytolytic activity via tyrosine phosphorylation of its ITIM (Immunoreceptor Tyrosine-based Inhibitory Motif).
The antibody was conjugated to BD Horizon™ BV421 which is part of the BD Horizon Brilliant™ Violet family of dyes. With an Ex Max of 407-nm and Em Max at 421-nm, BD Horizon BV421 can be excited by the violet laser and detected in the standard Pacific Blue™ filter set (eg, 450/50-nm filter). BD Horizon BV421 conjugates are very bright, often exhibiting a 10 fold improvement in brightness compared to Pacific Blue conjugates.
Development References (31)
-
Bendelac A. Mouse NK1+ T cells. Curr Opin Immunol. 1995; 7(3):367-374. (Clone-specific). View Reference
-
Brennan J, Mahon G, Mager DL, Jefferies WA, Takei F. Recognition of class I major histocompatibility complex molecules by Ly-49: specificities and domain interactions. J Exp Med. 1996; 183(4):1553-1559. (Biology). View Reference
-
Chang CS, Kane KP. Evidence for sulfate modification of H-2Dd on N-linked carbohydrate(s): possible involvement in Ly-49A interaction. J Immunol. 1998; 160(9):4367-4374. (Biology). View Reference
-
Coles MC, McMahon CW, Takizawa H, Raulet DH. Memory CD8 T lymphocytes express inhibitory MHC-specific Ly49 receptors. Eur J Immunol. 2000; 30(1):236-244. (Biology). View Reference
-
Daniels BF, Karlhofer FM, Seaman WE, Yokoyama WM. A natural killer cell receptor specific for a major histocompatibility complex class I molecule. J Exp Med. 1994; 180(2):687-692. (Biology). View Reference
-
Guy-Grand D, Cuenod-Jabri B, Malassis-Seris M, Selz F, Vassalli P. Complexity of the mouse gut T cell immune system: identification of two distinct natural killer T cell intraepithelial lineages. Eur J Immunol. 1996; 26(9):2248-2256. (Clone-specific). View Reference
-
Hanke T, Takizawa H, McMahon CW, et al. Direct assessment of MHC class I binding by seven Ly49 inhibitory NK cell receptors. Immunity. 1999; 11(1):67-77. (Biology). View Reference
-
Hara T, Nishimura H, Hasegawa Y, Yoshikai Y. Thymus-dependent modulation of Ly49 inhibitory receptor expression on NK1.1+gamma/delta T cells. Immunology. 2001; 102(1):24-30. (Biology). View Reference
-
Held W, Kunz B. An allele-specific, stochastic gene expression process controls the expression of multiple Ly49 family genes and generates a diverse, MHC-specific NK cell receptor repertoire. Eur J Immunol. 1998; 28(8):2407-2416. (Biology). View Reference
-
Hoglund P, Sundback J, Olsson-Alheim MY, et al. Host MHC class I gene control of NK-cell specificity in the mouse. Immunol Rev. 1997; 155:11-28. (Biology). View Reference
-
Kane KP. Ly-49 mediates EL4 lymphoma adhesion to isolated class I major histocompatibility complex molecules. J Exp Med. 1994; 179(3):1011-1015. (Biology). View Reference
-
Karlhofer FM, Ribaudo RK, Yokoyama WM. MHC class I alloantigen specificity of Ly-49+ IL-2-activated natural killer cells. Nature. 1992; 358(6381):66-70. (Clone-specific). View Reference
-
Kase A, Johansson MH, Olsson-Alheim MY, Karre K, Hoglund P. External and internal calibration of the MHC class I-specific receptor Ly49A on murine natural killer cells. J Immunol. 1998; 161(11):6133-6138. (Biology). View Reference
-
Kim S, Yokoyama WM. NK cell granule exocytosis and cytokine production inhibited by Ly-49A engagement. Cell Immunol. 1998; 183(2):106-112. (Biology). View Reference
-
Liu J, Yu YY, Lindahl KF, Kumar V, Bennett M. Allorecognition by murine natural killer cells: studies with bone marrow transplants and lysis of T lymphoblasts. Chem Immunol. 1996; 64:164-180. (Biology). View Reference
-
Makrigiannis AP, Pau AT, Saleh A, Winkler-Pickett R, Ortaldo JR, Anderson SK. Class I MHC-binding characteristics of the 129/J Ly49 repertoire. J Immunol. 2001; 166(8):5034-5043. (Biology). View Reference
-
Mason LH, Gosselin P, Anderson SK, Fogler WE, Ortaldo JR, McVicar DW. Differential tyrosine phosphorylation of inhibitory versus activating Ly-49 receptor proteins and their recruitment of SHP-1 phosphatase. J Immunol. 1997; 159(9):4187-4196. (Biology). View Reference
-
Mason LH, Willette-Brown J, Anderson SK, et al. Characterization of an associated 16-kDa tyrosine phosphoprotein required for Ly-49D signal transduction. J Immunol. 1998; 160(9):4148-4152. (Biology). View Reference
-
Matsumoto N, Ribaudo RK, Abastado JP, Margulies DH, Yokoyama WM. The lectin-like NK cell receptor Ly-49A recognizes a carbohydrate-independent epitope on its MHC class I ligand. Immunity. 1998; 8(2):245-254. (Biology). View Reference
-
Nagasawa R, Gross J, Kanagawa O, et al. Identification of a novel T cell surface disulfide-bonded dimer distinct from the alpha/beta antigen receptor. J Immunol. 1987; 138(3):815-824. (Immunogen). View Reference
-
Ochi H, Watanabe T. Negative regulation of B cell receptor-mediated signaling in B-1 cells through CD5 and Ly49 co-receptors via Lyn kinase activity. Int Immunol. 2000; 12(10):1417-1423. (Biology). View Reference
-
Olsson-Alheim MY, Salcedo M, Ljunggren HG, Karre K, Sentman CL. NK cell receptor calibration: effects of MHC class I induction on killing by Ly49Ahigh and Ly49Alow NK cells. J Immunol. 1997; 159(7):3189-3194. (Biology). View Reference
-
Olsson-Alheim MY, Sundback J, Karre K, Sentman CL. The MHC class I molecule H-2Dp inhibits murine NK cells via the inhibitory receptor Ly49A. J Immunol. 1999; 162(12):7010-7014. (Biology). View Reference
-
Raulet DH, Held W, Correa I, Dorfman JR, Wu MF, Corral L. Specificity, tolerance and developmental regulation of natural killer cells defined by expression of class I-specific Ly49 receptors. Immunol Rev. 1997; 155:41-52. (Biology). View Reference
-
Robson MacDonald H, Lees RK, Held W. Developmentally regulated extinction of Ly-49 receptor expression permits maturation and selection of NK1.1+ T cells. J Exp Med. 1998; 187(12):2109-2114. (Biology). View Reference
-
Silver ET, Gong DE, Chang CS, Amrani A, Santamaria P, Kane KP. Ly-49P activates NK-mediated lysis by recognizing H-2Dd. J Immunol. 2000; 165(4):1771-1781. (Biology). View Reference
-
Skold M, Cardell S. Differential regulation of Ly49 expression on CD4+ and CD4-CD8- (double negative) NK1.1+ T cells. Eur J Immunol. 2000; 30(9):2488-2496. (Clone-specific). View Reference
-
Sundback J, Nakamura MC, Waldenstrom M, et al. The alpha2 domain of H-2Dd restricts the allelic specificity of the murine NK cell inhibitory receptor Ly-49A. J Immunol. 1998; 160(12):5971-5978. (Biology). View Reference
-
Yokoyama WM, Kehn PJ, Cohen DI, Shevach EM. Chromosomal location of the Ly-49 (A1, YE1/48) multigene family. Genetic association with the NK 1.1 antigen. J Immunol. 1990; 145(7):2353-2358. (Clone-specific). View Reference
-
Yokoyama WM, Seaman WE. The Ly-49 and NKR-P1 gene families encoding lectin-like receptors on natural killer cells: the NK gene complex. Annu Rev Immunol. 1993; 11:613-635. (Clone-specific). View Reference
-
Yu YY, George T, Dorfman JR, Roland J, Kumar V, Bennett M. The role of Ly49A and 5E6(Ly49C) molecules in hybrid resistance mediated by murine natural killer cells against normal T cell blasts. Immunity. 1996; 4(1):67-76. (Biology). View Reference
Please refer to Support Documents for Quality Certificates
Global - Refer to manufacturer's instructions for use and related User Manuals and Technical data sheets before using this products as described
Comparisons, where applicable, are made against older BD Technology, manual methods or are general performance claims. Comparisons are not made against non-BD technologies, unless otherwise noted.
For Research Use Only. Not for use in diagnostic or therapeutic procedures.