Specific Immune Cell Therapy Against Ovarian Cancer In Vivo and In Vitro
- Author:
- No author available
- Journal Title:
- CHINESE JOURNAL OF CANCER
- Issue:
- 12
- DOI:
- 10.3321/j.issn:1000-467X.2008.12.003
- Key Word:
- 抗独特型微抗体;卵巢肿瘤;SKOV3细胞;移植瘤;CIK;免疫细胞治疗;小鼠
Abstract： 背景与目的:卵巢癌抗独特型微抗体(6B11mini)是部分人源化的抗独特型卵巢癌疫苗,体内外实验研究证明,它可以诱导出特异的抗卵巢癌体液免疫和细胞免疫.本研究评价将6B11mini作为抗原,采用免疫细胞的方法处理卵巢癌时的安全性和有效性.方法:用纯化的6B11mini负载树突细胞(dendritic cell,DC),与外周血单个核细胞(peripheral blood mononucleocyte,PBMNC)混合培养,在多种细胞因子共同作用下获得效应细胞6B11-OCIK.通过软琼脂克隆形成实验及接种裸鼠皮下瘤实验,观察6B11-OCIK在体内和体外的成瘤能力;将6B11-OCIK静脉注射BALB/c小鼠,观察急性毒性反应:体外51Cr释放实验检测6B11-OCIK对靶细胞的杀伤作用.用人卵巢癌细胞株SKOV3构建严重联合免疫缺陷(severe combined immune deficieney,SCID)小鼠卵巢癌移植瘤模型,注射6B11-OCIK,并以CIK、PBMNC细胞以及生理盐水作为对照组,分别观察各组肿瘤生长情况.结果:软琼脂培养14 d,卵巢癌SKOV3细胞克隆形成良好,克隆形成率50%:皮下接种裸鼠后14 d,阳性对照的宫颈癌HeLa细胞组全部成瘤,6B11-OCIK、CIK、WI-38组和新鲜PBMNC组持续观察13周没有成瘤.6B11-OCIK静脉注射BALB/c小鼠,30 min内各剂量实验组和生理盐水对照组动物都无任何明显的不良反应:输注后第13天处死小鼠,解剖小鼠观察其各主要脏器无明显异常.在体外杀伤实验中6B11-OCIK对抗原阳性的肿瘤细胞具有特异性杀伤作用,并且与MHC限制性相关;在荷瘤SCID小鼠中6B11-OCIK治疗组肿瘤重量与生理盐水对照组相比差异有统计学意义(P=0.023),与CIK组、新鲜单采组相比差异无统计学意义(P=0.540,P=0.285).结论:6B11-OCIK在动物体内应用时符合安全性指标,并对卵巢癌的生长有一定的抑制作用.
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