天津医药 ›› 2016, Vol. 44 ›› Issue (4): 397-400.doi: 10.11958/20150353

• 专题研究-乳腺肿瘤 • 上一篇    下一篇

WT1特异性 CD8+ T 细胞治疗乳腺癌的实验研究

王新超1△, 郝素红1 , 高英堂2 , 邱丽君1 , 赵爽1 , 韩璐1   

  1. 1天津市第四中心医院 (邮编300140); 2天津市第三中心医院
  • 收稿日期:2015-11-26 修回日期:2016-01-18 出版日期:2016-04-15 发布日期:2016-05-20
  • 通讯作者: △通讯作者 E-mail: xin-c@hotmail.com E-mail:13820789663@163.com
  • 作者简介:王新超 (1969), 男, 主任医师, 医学博士, 主要从事甲状腺、 乳腺疾病和肿瘤免疫治疗方面的研究
  • 基金资助:
    天津市卫生行业重点攻关项目 (12KG109)

Experimental study of WT1 specific CD8+ T cells in the treatment of breast cancer

WANG Xinchao1△, HAO Suhong1 , GAO Yingtang2 , QIU Lijun1 , ZHAO Shuang1 , HAN Lu1   

  1. 1 Department of Breast and Thyroid, the Fourth Central Hospital of Tianjin, Tianjin 300140, China; 2 The Third Central Hospital of Tianjin
  • Received:2015-11-26 Revised:2016-01-18 Published:2016-04-15 Online:2016-05-20
  • Contact: △Corresponding Author E-mail: xin-c@hotmail.com E-mail:13820789663@163.com

摘要: 摘要: 目的 通过检测 Wilms’肿瘤基因 1 (WT1) 特异性 CD8+ T 细胞对乳腺癌细胞的杀伤活性, 探讨正常外周血中提取的 WT1 特异性 CD8+ T 细胞用于治疗乳腺癌的可行性。方法 运用流式细胞仪检测 20 例人白细胞抗原(HLA) -A2 血清阳性健康志愿者外周血中 WT1 特异性 CD8+ T 细胞的浓度, 通过 WT1/主要组织相容性复合体(MHC) 连锁状多聚体磁珠分选 WT1 特异性 CD8+ T 细胞并进行培养, 细胞毒性实验检测 WT1 特异性 CD8+ T 细胞的功能。结果 20 例 HLA-A2 血清阳性健康志愿者外周血中均可检测到 WT1 特异性 CD8+ T 细胞, 12 例健康外周血中 WT1 特异性 CD8+ T 细胞的浓度>0.5%, 其中 4 例>1%。WT1/MHC 连锁状多聚体磁珠分选后, 其浓度明显增加至 80%左右。WT1 特异性 CD8+ T 细胞可特异性杀伤 WT1 多肽负载的乳腺癌细胞株。结论 健康志愿者外周血中可检测到 WT1 特异性 CD8+ T 细胞, 该细胞可能对乳腺癌细胞具有特异性杀伤作用, 提示 WT1 特异性 CD8+ T 细胞用于乳腺癌过继性免疫治疗的可能性。

关键词: 乳腺肿瘤, 免疫疗法, 过继, CD8阳性T淋巴细胞, WT1, 细胞免疫治疗

Abstract: Abstract: Objective To investigate the feasibility of Wilms’tumor gene 1 (WT1)- specific CD8+ T cells from periph⁃ eral blood for the treatment of breast cancer by detecting the killing activity of WT1 specific CD8+ T cells on breast cancer cells. Methods Flow cytometry was used to detect WT1-specific CD8+ T cells in the peripheral blood of 20 samples from HLA-A2 seropositive healthy donors, which were isolated by WT1/MHC streptamer magnetic beads and cultured. The func⁃ tion of WT1-specific CD8+ T cells were analysis by cytotoxicity assay. Results Twelve of 20 healthy donors had naive WT1-specific CD8+ T-cell frequencies of >0.5%, and 4 of 20 even >1.0% of all CD8+ T cells. After positive selection by magnetic cell separation, a purity of up to 80% can be achieved. WT1 specific CD8+ T cells can specifically kill breast can⁃ cer cell line with WT1 polypeptide. Conclusion WT1 specific CD8+ T cells can be detected in peripheral blood of healthy volunteers. WT1 specific CD8+ T cells have killing effect on breast cancer cells, suggesting the feasibility of adoptive immu⁃ notherapy for breast cancer.

Key words: breast neoplasms, immunotherapy, adoptive, CD8-positive T-lymphocytes, Wilms’tumor gene 1, cell immunotherapy