In this study, we tried to improve the anticancer properties of two potential cytostatic agents based on
benzo[c]fluorene, benfluron and dimefluron, by the synthesis of their C-7 derivatives. In the new derivatives, we observed
the effect in Ehrlich tumour-bearing mice as well as in human MCF-7, BT-549 and MDA-MB-231 cells. All of the compounds
tested showed a strong inhibitory effect in vitro. When tested in vivo, their systemic toxicity in vivo was promisingly
low. Benfluron and its O-methyloxime as well as dimefluron and its oxime, thiosemicarbazone and hydrazone inhibited
tumour growth in vivo. Only benfluron and hydrazone of dimefluron prolonged the survival. Proliferating cell nuclear
antigen (PCNA) protein was decreased in tumours treated with benfluron and O-methyloxime of dimefluron in cancer tissue.
Benfluron thiosemicarbazone increased the infiltration of tumour with T-lymphocytes. Taken together, all derivatives
were more cytotoxic then their parent compounds, but not necessarily more effective in vivo.
在本研究中,我们尝试通过合成苯并[c]
芴的 C-7 衍
生物来改善两种潜在细胞
抑制剂--苯
氟隆和二
氟隆的抗癌特性。我们观察了新衍
生物对艾氏肿瘤小鼠以及人类 MCF-7、BT-549 和
MDA-MB-231 细胞的作用。所有受测化合物在体外都表现出了很强的抑制作用。在体内测试时,它们在体内的系统毒性很低,令人鼓舞。苯
氟隆及其 O-甲基
肟、丁
氟隆及其
肟、
硫代
氨基甲酸唑和腙在体内均能抑制肿瘤生长。只有苯
氟隆和丁
氟隆的腙能延长肿瘤的存活时间。在癌症组织中,使用苯
氟隆和丁
氟隆的 O-甲基
肟处理的肿瘤中增殖细胞核抗原(PCNA)蛋白减少。 苯
氟隆
硫代脒唑酮增加了肿瘤中 T 淋巴细胞的浸润。总之,所有衍
生物的细胞毒性都比其母体化合物强,但在体内并不一定更有效。