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Two-color analysis of Ly-49D expression on splenic NK cells. C57Bl/6 splenocytes were simultaneously stained with PE-conjugated mAb PK136 (anti-mouse NK-1.1, Cat. No. 557391/553165, both panels) and purified 4E5 mAb (right panel), followed by FITC-conjugated goat anti-rat Ig (Cat. No. 554016, both panels). Flow cytometry was performed on a FACScan™ (BDIS, San Jose, CA).
BD Pharmingen™ Purified Rat Anti-Mouse Ly-49D
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The 4E5 monoclonal antibody specifically recognizes Ly-49D, which is expressed on subsets of natural killer (NK) cells in C57BL/6, C3H/He (at a very low frequency), and SJL, but not DBA/2, AKR, CBA/J, or BALB/c mice. Unlike Ly-49D antigen has not been betected on NK-1.1+ (or DX5+) T cells. In 129/J mice, the 4E5 antibody cross-reacts with Ly-49O, Ly-49R, and Ly-49V. 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, which bind to MHC class I alloantigens. 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. Ly-49D weakly binds to MHC class I antigens of the k halpotype, and Ly-49D+ IL-2-activated NK cells lyse target cells expressing H-2[a], H-2[b], H-2[d], H-2[k], H-2[p], H-2[q], and H-2[s] and the CHO (Chinese hamster ovary) cell line. Ly-49D+ cells mediate allogenic resistance to H-2d bone marrow transplantation. In vitro studies suggest that the Ly-49D receptor mediates activation of NK-cell cytolytic activity via tyrosine phosphorylation of their ITIMs (Immunoreceptor Tyrosine-based Inhibitory Motifs). Molecular differences between the Ly-49D stimulatory receptor and the inhibitory members of the Ly-49 family include the absence of an ITIM in Ly-49D, the lack of phosphorylation of Ly-49D in activated NK cells, and the association of a novel tyrosine-phosphorylated protein (pp16) with Ly-49D in activated NK cells. Ly-49O and Ly-49V are closely related to Ly-49A[B6] and, like Ly-49A, have ITIM domains. Ly-49O- and Ly-49V-transfected 293T (human kidney epithelial) cells bind tetramers of H-2D[b], D[b], D[k], and L[d]. In addition, the Ly-49V-transfected cells also bind K[b], K[d], and K[k]. Ly-49R is closely related to Ly-49D[B6] and is putative activating receptor due to its lack of an ITIM domain. Ly-49R-transfected 293T cells bind soluble tetramers of H-2D[b], D[d], D[k], and L[d].
研发参考 (13)
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George TC, Mason LH, Ortaldo JR, Kumar V, Bennett M. Positive recognition of MHC class I molecules by the Ly49D receptor of murine NK cells. J Immunol. 1999; 162(4):2035-2043. (Clone-specific: Blocking). 查看参考
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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). 查看参考
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Idris AH, Smith HR, Mason LH, Ortaldo JR, Scalzo AA, Yokoyama WM. The natural killer gene complex genetic locus Chok encodes Ly-49D, a target recognition receptor that activates natural killing. Proc Natl Acad Sci U S A. 1999; 96(11):6330-6335. (Clone-specific: Blocking). 查看参考
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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). 查看参考
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Mason LH, Anderson SK, Yokoyama WM, Smith HR, Winkler-Pickett R, Ortaldo JR. The Ly-49D receptor activates murine natural killer cells. J Exp Med. 1996; 184(6):2119-2128. (Biology). 查看参考
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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). 查看参考
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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. (Clone-specific: Immunoprecipitation). 查看参考
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Ortaldo JR, Mason AT, Winkler-Pickett R, Raziuddin A, Murphy WJ, Mason LH. Ly-49 receptor expression and functional analysis in multiple mouse strains. J Leukoc Biol. 1999; 66(3):512-520. (Clone-specific). 查看参考
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Ortaldo JR, Winkler-Pickett R, Mason AT, Mason LH. The Ly-49 family: regulation of cytotoxicity and cytokine production in murine CD3+ cells. J Immunol. 1998; 160(1):1158-1165. (Clone-specific). 查看参考
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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). 查看参考
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Raziuddin A, Longo DL, Mason L, Ortaldo JR, Bennett M, Murphy WJ. Differential effects of the rejection of bone marrow allografts by the depletion of activating versus inhibiting Ly-49 natural killer cell subsets. J Immunol. 1998; 160(1):87-94. (Biology). 查看参考
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Takei F, Brennan J, Mager DL. The Ly-49 family: genes, proteins and recognition of class I MHC. Immunol Rev. 1997; 155:67-77. (Biology). 查看参考
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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. (Biology). 查看参考
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