TNP-470联合顺铂抗腺样囊性癌生长和肺转移的实验研究

目的　研究血管生成抑制剂TNP 470联合顺铂 (CDDP)对口腔腺样囊性癌生长及肺转移的抑制作用。方法　分别将建株的口腔腺样囊性癌肺转移细胞株 (ACC M)细胞悬液注射至裸鼠皮下和尾静脉 ,建立口腔腺样囊性癌皮下移植瘤及实验性肺转移模型。从移植后的第 3周开始 ,于裸鼠对侧皮下注射TNP 470 30mg/kg,隔日 1次 ,共7次。CDDP分别在第 3周和第 4周腹腔给药各 1次 ,剂量为 5mg/kg。停药后第 2d处死裸鼠。测量肿瘤大小 ,称重并计数肺转移结节数。以兔抗人Ⅷ因子相关抗原抗体免疫组化染色后 ,计数皮下瘤块血管密度。结果　与单用TNP 470相比 ,TNP 470联合CDDP对口腔腺样囊性癌生长和肺转移的抑制作用更强 ,但对皮下移植瘤的血管密度影响无明显差异。结论　TNP 470联合CDDP对口腔腺样囊性癌生长和肺转移有明显的抑制作用。

The Inhibitory Study of TNP-470 Combined CDDP on the Tumor Growth and Lung Metastasis of Adenoid Cystic Carcinoma ACC-M in Nude Mice

OBJECTIVE:To study the effect of TNP-470 combined CDDP on the tumor growth and lung metastasis of cell strain ACC-M in vivo. METHODS:High potential lung metastatic adenoid cystic carcinoma cell strains (ACC-M) 5x10(5) were injected simultaneously to 18 nude mice subcutaneously and enously. The animals were randomly divided into 3 groups. In group 1, TNP-470 was administered subcutaneously at the dose of 30mg/kg every other day for 2 weeks from the beginning of 3(rd) week to the end of 4(th) week. In group 2, 5mg/kg CDDP were injected into peritoneal cavity at the beginning of 3(rd) week and 4(th) week and TNP-470 in the same manner as group 1 additionally. In group 3, the same volume of 0.97% NaCl was injected in the manner of group 1. The mice were sacrificed by dislocating the neck at the end of 4 weeks. The tumor size and weights were recorded. The vascular density was measured by rabbit-anti-human factor VIII antibody stain. The results were analyzed by Student t and X(2) test. RESULTS:Group 1 and group 2 had fewer tumor weight and lung metastasis than the 3(rd) group. There was significant difference in the tumor weight and lung metastasis between group 1 and group 2. But the vascular density had no difference among three groups. CONCLUSION:TNP-470 combined CDDP has stronger inhibition on both the tumor growth and lung metastasis of human adenoid cystic carcinoma ACC-M than used alone.