首页> 美国卫生研究院文献>Stem Cells and Development >Ex Vivo Generated Natural Killer Cells Acquire Typical Natural Killer Receptors and Display a Cytotoxic Gene Expression Profile Similar to Peripheral Blood Natural Killer Cells
【2h】

Ex Vivo Generated Natural Killer Cells Acquire Typical Natural Killer Receptors and Display a Cytotoxic Gene Expression Profile Similar to Peripheral Blood Natural Killer Cells

机译:体内生成的自然杀伤细胞获得典型的自然杀伤受体并显示类似于外周血自然杀伤细胞的细胞毒性基因表达谱

代理获取
本网站仅为用户提供外文OA文献查询和代理获取服务,本网站没有原文。下单后我们将采用程序或人工为您竭诚获取高质量的原文,但由于OA文献来源多样且变更频繁,仍可能出现获取不到、文献不完整或与标题不符等情况,如果获取不到我们将提供退款服务。请知悉。

摘要

Ex vivo differentiation systems of natural killer (NK) cells from CD34+ hematopoietic stem cells are of potential importance for adjuvant immunotherapy of cancer. Here, we analyzed ex vivo differentiation of NK cells from cord blood-derived CD34+ stem cells by gene expression profiling, real-time RT-PCR, flow cytometry, and functional analysis. Additionally, we compared the identified characteristics to peripheral blood (PB) CD56bright and CD56dim NK cells. The data show sequential expression of CD56 and the CD94 and NKG2 receptor chains during ex vivo NK cell development, resulting finally in the expression of a range of genes with partial characteristics of CD56bright and CD56dim NK cells from PB. Expression of characteristic NK cell receptors and cytotoxic genes was mainly found within the predominant ex vivo generated population of NKG2A+ NK cells, indicating the importance of NKG2A expression during NK cell differentiation and maturation. Furthermore, despite distinct phenotypic characteristics, the detailed analysis of cytolytic genes expressed within the ex vivo differentiated NK cells revealed a pattern close to CD56dim NK cells. In line with this finding, ex vivo generated NK cells displayed potent cytotoxicity. This supports that the ex vivo differentiation system faithfully reproduces major steps of the differentiation of NK cells from their progenitors, constitutes an excellent model to study NK cell differentiation, and is valuable to generate large-scale NK cells appropriate for immunotherapy.
机译:CD34 + 造血干细胞对自然杀伤(NK)细胞的体外分化系统对于癌症的辅助免疫治疗具有潜在的重要性。在这里,我们通过基因表达谱分析,实时RT-PCR,流式细胞术和功能分析,分析了NK细胞从脐血来源的CD34 + 干细胞的离体分化。另外,我们将鉴定出的特征与外周血(PB)CD56 bright 和CD56 dim NK细胞进行了比较。数据显示离体NK细胞发育过程中CD56以及CD94和NKG2受体链的顺序表达,最终导致一系列具有CD56 bright 和CD56 dim部分特征的基因表达 PB的NK细胞。主要在离体产生的主要NKG2A + NK细胞群体中发现特征性NK细胞受体和细胞毒性基因的表达,这表明NKG2A表达在NK细胞分化和成熟中的重要性。此外,尽管具有明显的表型特征,但对离体分化的NK细胞内表达的溶细胞基因的详细分析显示,其模式接近CD56 dim NK细胞。与该发现一致,离体产生的NK细胞显示出强的细胞毒性。这支持离体分化系统忠实地再现了NK细胞从其祖细胞分化的主要步骤,构成了研究NK细胞分化的优秀模型,并且对于生成适合于免疫疗法的大规模NK细胞非常有价值。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
代理获取

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号