51Cr-release assay. Additionally, lymphocytes were cultured in RPMI 1640 medium with or without IL-2 for 48 h, and then their CD158a/b expression and NK activity was analyzed. CD158a/b expression was significantly correlated with NK activity. Especially, the percentage of CD16+CD158a+ and CD8+CD158a/b+ cells in lymphocytes showed a highly significant correlation with NK activity. However, analysis of CD8+ and CD16+ cells revealed that there was only a significant correlation between the percentage of CD8+CD158a+ cells among only CD8+ cells and NK activity. The upregulation of CD16+CD158a+/b+ cells in response to IL-2 tended to be related to the increase of NK activity, but the relationship was not significant. In conclusion, the level of KIR expression was correlated with NK activity, and IL-2 treatment resulted in an increase of NK activity as well as KIR expression, suggesting that upregulation of KIRs enhances the ability to sort target cells, such as virus-infected cells from uninfected cells, according to major histocompatibility complex class I expression."> 自然杀伤细胞的溶解活性与人外周血淋巴细胞杀伤细胞免疫球蛋白样受体的表达有关 - raybet雷竞app,雷竞技官网下载,雷电竞下载苹果
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体积 12 |文章的ID 342851 | https://doi.org/10.1080/0962935031000097727

Kogure Toshiaki, Naoki Mantani, Shinya Sakai, Yutaka Shimada, Jun'ichi Tamura, Katsutoshi Terasawa 自然杀伤细胞的溶解活性与人外周血淋巴细胞杀伤细胞免疫球蛋白样受体的表达有关",炎症介质 卷。12 文章的ID342851 5 页面 2003 https://doi.org/10.1080/0962935031000097727

自然杀伤细胞的溶解活性与人外周血淋巴细胞杀伤细胞免疫球蛋白样受体的表达有关

摘要

虽然有研究表明,外周血淋巴细胞上的杀伤细胞免疫球蛋白样受体(killer cell immunoglobulin-like receptor, KIRs)是由激活自然杀伤细胞(natural killer, NK)活性的白细胞介素-2 (interleukin-2, IL-2)上调的,但尚未证实KIRs的表达是否与NK活性有关。因此,我们研究了淋巴细胞KIR表达与NK活性之间的关系。流式细胞术分析37例患者淋巴细胞CD158a/b表达情况。同时,用a 51 Cr 释放试验。另外,将淋巴细胞在含或不含IL-2的RPMI 1640培养基中培养48 h,分析其CD158a/b表达及NK活性。CD158a/b表达与NK活性显著相关。特别是淋巴细胞中CD16+CD158a+和CD8+CD158a/b+细胞百分比与NK活性呈高度显著相关。然而,对CD8+和CD16+细胞的分析显示,只有CD8+细胞中CD8+CD158a+细胞百分比与NK活性之间存在显著相关。IL-2诱导的CD16+CD158a+/b+细胞表达上调与NK细胞活性升高相关,但相关性不显著。综上所述,KIR表达水平与NK活性相关,IL-2处理导致NK活性和KIR表达增加,表明上调KIR可增强对靶细胞的分类能力,如病毒感染的细胞和未感染的细胞,根据主要组织相容性复合体I类表达。

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