Lymphoproliferative disease in human peripheral blood mononuclear cell- injected SCID mice. I. T lymphocyte requirement for B cell tumor generation

Lymphoproliferative disease in human peripheral blood mononuclear cell- injected SCID mice. I. T lymphocyte requirement for B cell tumor generation
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注射人外周血单核细胞的 SCID 小鼠中的淋巴细胞增殖性疾病。

DOI:
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发表时间:
1992
影响因子:
15.3
通讯作者:
Marina Panozzo
Marina Panozzo
中科院分区:
医学1区
文献类型:
--
作者:
M. L. Veronese;A. Veronesi;E. D'andrea;A. D. Mistro;Stefano Indraccolo;M. Mazza;Marta Mion;Rita Zamarchi;Chiara Menin;Marina Panozzo

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在用来自EB病毒阳性(EBV+)供体的人淋巴细胞注射的SCID小鼠中研究了肿瘤发展的机制。约80%的外周血单核细胞(PBMC)注射的动物发展成与人B细胞来源的寡克隆EBV+肿瘤相关的淋巴组织增生性疾病。当接种单核细胞耗尽的PBMC时,肿瘤发展率没有变化。当注射纯化的B细胞时,没有肿瘤发生。在大多数情况下,当用防止T细胞活化的试剂如环孢菌素A处理PBMC注射的动物时,也防止了B细胞淋巴增生性疾病。CD4+和CD8+ T细胞亚群都能够提供EBV+ B细胞扩增和进展为肿瘤所必需的推定因子。这些数据表明,转移到一个免疫缺陷的环境中,如SCID小鼠,单独的潜在致瘤性的人类细胞,可能不足以细胞进展到肿瘤,并提出了慢性激活事件可能在免疫功能低下的主机中的一些EBV+淋巴瘤的发病机制中发挥重要作用的可能性。
Mechanisms of tumor development were studied in SCID mice injected with human lymphoid cells from Epstein-Barr virus-positive (EBV+) donors. About 80% of peripheral blood mononuclear cell (PBMC)-injected animals developed a lymphoproliferative disease associated with oligoclonal EBV+ tumors of human B cell origin. No change in tumor development rate occurred when monocyte-depleted PBMC were inoculated. No tumors developed when purified B cells were injected. B cell lymphoproliferative disease was also prevented in most cases when PBMC- injected animals were treated with agents that prevent T cell activation, such as cyclosporin A. Both CD4+ and CD8+ T cell subpopulations were able to provide putative factor(s) necessary for EBV+ B cell expansion and progression to tumors. These data suggest that the transfer alone of potentially tumorigenic human cells into an immunodeficient environment, such as the SCID mouse, might not be sufficient for cell progression to tumor, and raise the possibility that chronic activation events could play a major role in the pathogenesis of some EBV+ lymphomas in the immunocompromised host.
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