CD_3AK细胞冻融提取液的抗肿瘤活性研究

Antitumor Activity of the Lysates Prepared from Anti CD 3 Antibody Activated Killer Cells

为研究 CD3AK细胞冻融提取液的抗肿瘤作用 ,作者采集正常人外周血分离单个核细胞 (PBMC) ,先用抗 CD3的单克隆抗体 (CD3Mc Ab)和 r IL - 2诱导和激活 ,使之成为 CD3Mc Ab激活的杀伤细胞 (CD3AK ) ,再制备 CD3AK的冻融提取液 ,然后进行体内、外抗肿瘤实验。结果 :低剂量的 CD3Mc Ab和 r IL- 2能明显诱导 PBMC的活化和增殖 ;激活后的 CD3AK细胞冻融提取液可抑制小鼠肝癌实体瘤细胞 H2 2在小鼠体内生长 ,其抑瘤率达6 8.2 0 % (肿瘤局部注射 )和 6 0 .38% (腹腔注射 ) ;在体外实验中 ,该提取液能有效杀伤 K5 6 2和 Raji瘤细胞 ,其杀瘤活性分别为 83.32 %和 6 6 .83%。以上研究说明

This study was directed at the antitumor activity of the lysates prepared from CD 3McAb activated killer cells. We separated the peripheral blood monocytes(PBMC) from normal adults. The PBMC were induced by monoclonal antibody specific for CD 3(CD 3McAb) and activated by rIL 2. The CD 3McAb activated killer cells(CD 3AK) were smashed by ultrasonic wave, along with frozen and thawed three times, then the lysates were obtained by centrifugation. The lysates were tested for antitumor activity in vivo and in vitro. The results revealed that the inhibition rate of the lysates that acted on mice solid tumor hepatoma 22(H22) was 68.20% and the killing activity of the lysates on K562 and Raji were 83.32%, and 66.83% respectively. The results of this experiment suggested that the lysates prepared from CD 3McAb activated killer cells is one of probable agents that might apply to biotherapy for tumors.