Expression of SART3 tumor-rejection antigen in gastric cancers.

Expression of SART3 tumor-rejection antigen in gastric cancers.
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DOI:
10.1111/j.1349-7006.2000.tb00950.x
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发表时间:
2000-03
期刊:
Japanese journal of cancer research : Gann
影响因子:
--
通讯作者:
Itoh K
Itoh K
中科院分区:
其他
文献类型:
--
作者:
Niiya F;Nishizaka S;Matsunaga K;Koufuji K;Mori M;Katai H;Yamana H;Itoh K

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我们以前报道过SART3是一种被组织相容白细胞抗原(HLA)-A24限制性细胞毒性T淋巴细胞(CTL)识别的肿瘤排斥抗原。在这项研究中,我们研究了SART3抗原在胃癌中的表达,作为一种用于特异性免疫治疗的候选。10株胃癌细胞株中9株(90%)、52例胃癌组织中35例(67.3%)、20例非肿瘤性胃组织中均未检测到SART3抗原。与第109-118位和315-323位对应的SART3衍生肽可诱导胃癌患者外周血单个核细胞(PBMC)中的人类白细胞抗原-A24限制性和肿瘤特异性CTL。这些多肽诱导的CTL识别HLAA24+SART3+胃癌细胞,但不识别HLAA24+SART3+−或HLAA24−SART3+胃癌细胞。因此,SART3多肽可用于胃癌患者的特异性免疫治疗。
We previously reported SART3 as a tumor‐rejection antigen recognized by histocompatibility leukocyte antigen (HLA)‐A24‐restricted cytotoxic T lymphocytes (CTLs). In this study, we investigated the expression of the SART3 antigen in gastric cancers, as a candidate for use in specific immunotherapy. The SART3 antigen was detected in 9 of 10 (90%) gastric cancer cell lines, 35 of 52 (67.3%) gastric cancer tissues, and 0 of 20 non‐tumorous gastric tissues. SART3‐derived peptides corresponding to positions 109–118 and 315–323 induced HLA‐A24‐restricted and tumorspecific CTLs from peripheral blood mononuclear cells (PBMCs) of gastric cancer patients. These peptide‐induced CTLs recognized HLA‐A24+ SART3+ gastric cancer cells, but not HLA‐A24+ SART3− or HLA‐A24− SART3+ gastric cancer cells. Therefore, the SART3 peptides could be useful in specific immunotherapy of gastric cancer patients.
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