Lym 7.2: monoclonal antibody defining an alloantigen similar or identical to Ly 7.2.

Lym 7.2: monoclonal antibody defining an alloantigen similar or identical to Ly 7.2.
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Lym 7.2:定义与Ly 7.2相似或相同的同种异体抗原的单克隆抗体。

DOI:
10.1089/hyb.1.1982.1.227
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发表时间:
1982
期刊:
影响因子:
--
通讯作者:
Warner,NL
Warner,NL
中科院分区:
--
文献类型:
--
作者:
Lanier,LL;Warner,NL

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用B10.D2免疫小鼠免疫(BALB/c×NZB)F1小鼠B淋巴瘤细胞系(WEHI-5),然后免疫脾细胞与药物敏感的骨髓瘤(P3×63-Ag8)融合,产生了一系列杂交瘤细胞系。其中一个克隆,BD5-334.5,分泌一种抗体,该抗体与一个命名为LYM7.2的决定簇发生反应,该决定簇显示出与传统定义的Ly7.2抗原相同的组织和菌株分布。此外,抗Ly 7.2同种异体抗血清可显著阻断抗Lym 7.2单抗与BALB/c脾细胞的反应。LYM 7.2存在于大多数脾细胞、外周血白细胞和淋巴结细胞上。然而,B细胞表达这种抗原的细胞表面密度比外周T淋巴细胞高得多。这种抗原在红细胞、肾脏、肝脏或脑中均未检测到。此外,LYM 7.2存在于大约15%的正常胸腺细胞和15%的骨髓细胞上,并在对可的松具有抵抗力的胸腺细胞上表达。流式细胞术定量分析表明,在Lym 7.2阳性和Lym 7.2阴性的F1小鼠的脾细胞上,该抗原的细胞表面密度约为Lym 7.2阳性和Lym 7.2阴性小鼠的一半,但与Lym 7.2阳性近交系小鼠的细胞面积密度相同。回交分析的数据表明,编码这种抗原的是一个单基因座。PHA、ConA和脂多糖诱导的丝裂原母细胞均表达LYM 7.2标记。
Immunization of B10.D2 Ignmice against a (BALB/c × NZB)F1murine B lymphoma cell line (WEHI-5) and subsequent fusion of immune spleen cells with a drug sensitive myeloma (P3×63-Ag8) has resulted in the generation of a series of hybridoma cell lines. One of these clones, BD5-334.5, secretes an antibody which reacts with a determinant, designated Lym 7.2, which demonstrates an identical tissue and strain distribution as the conventionally defined Ly 7.2 antigen. Furthermore, anti-Ly 7.2 alloantiserum significantly blocks reaction of the anti-Lym 7.2 monoclonal antibody with BALB/c splenocytes. Lym 7.2 is present on a majority of splenocytes, peripheral blood leukocytes, and lymph node cells. However, B cells express considerably higher cell surface density of this antigen than peripheral T lymphocytes. This antigen was not detected on erythrocytes, kidney, liver, or brain. Moreover, Lym 7.2 is present on approximately 15% of normal thymocytes, and 15% of bone marrow cells, and is expressed on cortisone resistant thymocytes. Quantitative flow cytometry analysis demonstrated that the antigen is present at approximately half the cell surface density on spleen cells from F1mice between Lym 7.2 positive and Lym 7.2 negative mice, but on the same percentage of cells as Lym 7.2 positive inbred strains. Data from backcross analysis suggest that a single locus is encoding this antigen. Mitogen blasts, induced with PHA, ConA, and LPS, all express the Lym 7.2 marker.
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DOI: --
发表时间: 1981
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影响因子: --
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