Decreased tumor surveillance after adoptive T-cell therapy.

Decreased tumor surveillance after adoptive T-cell therapy.
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过继性 T 细胞治疗后肿瘤监测减少。

DOI:
10.1158/0008-5472.can-06-4372
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发表时间:
2007
期刊:
影响因子:
11.2
通讯作者:
A. Ochsenbein
A. Ochsenbein
中科院分区:
医学1区
文献类型:
--
作者:
M. Matter;Viktor Pavelic;D. Pinschewer;Sabine Mumprecht;Bruno Eschli;Tsanan Giroglou;D. von Laer;A. Ochsenbein

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癌症免疫疗法对针对肿瘤的内源性免疫应答的影响在很大程度上是未知的。因此,我们研究了小鼠肿瘤表达的糖蛋白(GP)和/或核蛋白的淋巴细胞性脉络丛脑膜炎病毒(LCMV)的免疫反应与或没有过继性T细胞治疗。在未治疗的动物中,对不同表位具有特异性的CTL以及LCMV-GP特异性抗体有助于肿瘤监测。用LCMV-gp 33特异性单克隆CTL的连续免疫治疗通过靶向抗原交叉呈递细胞来损害内源性肿瘤特异性抗体和CTL应答。因此,与预期相反,免疫疗法增强了肿瘤生长。因此,对于某些免疫原性肿瘤,肿瘤特异性B-和T-细胞应答的减少和增强的肿瘤生长可能是过继免疫治疗的不希望的结果。
The effect of cancer immunotherapy on the endogenous immune response against tumors is largely unknown. Therefore, we studied immune responses against murine tumors expressing the glycoprotein (GP) and/or nucleoprotein of lymphocytic choriomeningitis virus (LCMV) with or without adoptive T-cell therapy. In nontreated animals, CTLs specific for different epitopes as well as LCMV-GP-specific antibodies contributed to tumor surveillance. Adoptive immunotherapy with monoclonal CTLs specific for LCMV-gp33 impaired the endogenous tumor-specific antibody and CTL response by targeting antigen cross-presenting cells. As a consequence and in contrast to expectations, immunotherapy enhanced tumor growth. Thus, for certain immunogenic tumors, a reduction of tumor-specific B- and T-cell responses and enhanced tumor growth may be an unwanted consequence of adoptive immunotherapy.
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