慢性活性泼斯坦-巴尔病毒感染患者 NK 和 T 细胞系建立的高效简便方法
Summary
采用高效、少量外周血、低剂量 IL-2 的方法, 建立了 CAEBV 患者的 NK 和 T 细胞克隆的简便算法。
Abstract
从淋巴瘤或淋巴综合征患者中, 我们已经描述了一些方法来建立 NK/T 细胞系。这些方法使用饲养细胞, 纯化 NK 或 T 细胞多达10毫升的血液, 或高剂量的 IL-2。本研究提出了一种通过添加重组人 IL-2 (rhIL-2), 通过培养外周血单个核细胞 (PBMC) 来建立 NK 和 T 细胞系的新方法, 并使用2毫升的全血。细胞可以在两周内迅速增殖并维持3月以上。用该方法建立了 7 NK 或 T 细胞系, 成功率高。该方法简便、可靠, 适用于多例 CAEBV 或 NK/T 细胞淋巴瘤细胞株的建立。
Introduction
eb 病毒是无处不在的, 不仅感染了 B 细胞, 而且传染了 T 和自然杀手 (nk) 细胞, 这导致了一些 eb 病相关的 NK/T 淋巴疾病 (LPD) 和淋巴瘤/白血病, 如 eb 联合噬血细胞lymphohistiocytosis, hydroa vacciniforme 淋巴瘤, 淋巴结外 nk/T 细胞淋巴瘤, 鼻型和侵袭性 NK 细胞白血病 1, 2, 3.其中包括严重的慢性主动 eb 病毒 (SCAEBV) 疾病, 主要发生在东亚, 现在被认为是由 eb 病毒感染的 T 或 NK 细胞的克隆扩张引起的 LPD4,5,6,7, 但没有明显的免疫缺陷存在于传染性传染性 (IM) 类似的症状, 包括发烧, 肿大, 淋巴结肿大, 肝功能障碍持续或反复, 以及高 eb 病毒-DNA 负荷在外围血液8,9。CAEBV 患者预后不佳10,11, 其发病机制和 eb 病毒的作用尚不清楚。因此, 从 eb 病毒相关的 nk/t 淋巴疾病和淋巴瘤的细胞系是非常有用的细胞模型, 以澄清 eb 病毒诱发 NK 或 t 细胞增殖机制及其与高发病率的白血病或淋巴.
到目前为止, 已经用不同的技术建立了几个单元格线12,13,14,15,16。人类 nk 细胞系由 nk 细胞淋巴瘤/白血病建立, 通过与小鼠基质细胞系进行共培养, 并在 rhIL-2 的浓度为每毫升15。KAI3 是由患有严重蚊子过敏或 SCAEBV 的患者与自体永生细胞系 (拼箱)、乙肝病毒转化的 B 细胞、作为饲养细胞以及在 100 u/毫升16中添加 rhIL-2 的病人建立的另一种 NK 细胞系。SNK6 和 SNT8 通过添加大剂量的 rhIL-2 (700 u/毫升)12, 从鼻 NK/T 细胞淋巴瘤患者的肿瘤组织中获得。与类似的技术, SNK-1 细胞是从 CAEBV 患者, 培养从 PBMC 通过去除 T 细胞和添加 700 u/毫升 rhIL-213,17。SNT13 和 SNT15 是通过删除 CD4+ 和 CD8+ 单元格18建立的。到目前为止, 其他 t 细胞和 nk 细胞系从 eb 病毒-NK/T LPD 患者都开发了此方法19。
上述现有方法的弊端包括: 饲养细胞的使用、高剂量 IL-2 的要求、多达10毫升全血的利用率, 或对 NK/T 细胞的净化, 这在临床上是非常有挑战性的, 因为在开始培养之前, 必须验证 eb 病毒潜伏感染的细胞类型。由于 CAEBV 主要发生在亚洲儿童身上, 所以在所有地区都不容易获得10毫升血液。在本研究中, 我们开发了一种新的简单的方法, 成功率高, 建立 NK 和/或 T 细胞系, 通过培养 PBMC 从 CAEBV 患者使用低剂量的 rhIL2 和2毫升的全血容量, 没有喂食细胞。结果表明, 该方法效率高, 节省时间。
Protocol
Representative Results
Discussion
在该协议中, 建立了 CAEBV 患者全血 NK/T 细胞系的新方法。与现有方法相比, 该方法的主要优点是其简单性和对少量血液的要求, 同时具有较高的成功率和良好的细胞生存条件。此外, 可以通过培养 PBMC 来建立 NK/T 细胞系, 而不确定 eb 病毒潜伏预先感染的细胞类型, 因为这种测定在培养前会消耗更多的血液和时间。另外, 细胞系可以通过细胞系建立后的流式细胞术进行分析, 从而纯化细胞的不同表型。?…
Divulgazioni
The authors have nothing to disclose.
Acknowledgements
这项工作得到了中国科学院重点项目 (KFZD-SW-205)、中国科学院战略生物资源技术支持系统 (CZBZX-1 和 ZSSB-004) 的支持, 并获得中国国家科学基金会资助 (81401640) 和上海自然科学基金 (14ZR1434800)。
Materials
| Hu HLA-DR FITC | BD | 560944 | antibody for FACS |
| Hu CD4 FITC | BD | 555346 | antibody for FACS |
| Hu/NHP CD8 PE | BD | 557086 | antibody for FACS |
| Hu CD3 PE | BD | 555340 | antibody for FACS |
| Hu CD16 FITC 3G8 | BD | 555406 | antibody for FACS |
| Hu/NHP CD56 PE MY31 | BD | 556647 | antibody for FACS |
| hu/CD19 PE-Cy7 | BD | 560728 | antibody for FACS |
| human IL-2 | Roche | 11147528001 | |
| human serum | MRC | CCC118-125 | |
| CO2 incubator | SANYO | ||
| Centrifuge | Techcomp | CT6T | Centrifugation |
| microscope | OLYMPUS CKX53 | CKX53 | |
| Automated Cell Counter | Countstar | IC 1000 | For cell counting |
| 24 well cell culture cluster | Corning Incorporated | 3524 | Polystyrene plates |
| 25cm2 cell culture flask | Nest | 707001 | Polystyrene |
| FBS | Gibco | 10270 | Component of cell medium |
| RPMI Medium 1640 | life | 22400089 | For cell medium |
| L-Glutamine | Amresco | 374 | Component of cell medium |
| 100 x streptomycin penicillin solution BioRoYeeBRY-2309 | BioRoYee | BRY-2309 | Component of cell medium |
| Ficoll paque plus | GE Healthcare | 17-1440-03 | For in vitro isolation of lymphocyte |
| DMSO | Sigma | D2650 | For freezing cells |
| flow cytometer | BD | BD FACSAria II | |
| soft ware | BD | BD FACSDiva soft ware | FACS analysis |
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