苦参联合胎肝低分子抑瘤物抗白血病有其机制

目的：探讨苦参（SF）、胎肝低分子抑瘤物（LMW－NTS）联合用药对正常人骨髓粒－巨噬系造血祖细胞（CFU－GM）和急性髓性白血病细胞的影响及其作用机制。方法：采用CFU－GM集落培养、细胞液体培养、Wrigh-giemsa染色、^3H-TdR掺入实验、DNA片段凝胶电泳和RT－PCR等方法，观察SF和LMW－NTS联用对白血病的作用。结果：SF和LMW－NTS联用，明显提高抑制白血病细胞增殖的能力，促进白血病细胞的凋亡，诱导白血病细胞中原癌基因c-Myc的下调，抑制正常造血祖细胞CFU－GM的作用明显低于抑制白血病细胞的作用。结论：联合用药抗白血病的效果，较单用苦参或胎肝低分子抑瘤物明显提高。

Anti-leukemia effect of sophora flavescens combined with the low molecular weight natural tumor suppressor of the human fetal liver and its mechanism]

OBJECTIVE: To explore the effect of sophora flavescens (SF) combined low molecular weight natural tumor suppressor(LMW-NTS) on normal human bone marrow CFU-GM and acute myelogenous leukemia cells and its mechanism. METHODS: CFU-GM colony culture, cell culture, Wrigh-Giemsa stain, 3H-TdR incorporation test, agarose gel electrophoresis of DNA fragment and RT-PCR were employed in this research. RESULTS: The combination of SF and LMW-NTS greatly inhibited the proliferation of acute meylogenous leukemia cells, induced their apoptosis, and down-regulated the c-Myc expression as compared with SF or LMW-NTS alone. CONCLUSION: The anti-leukemia effect of the combination of SF and LMW-NTS is superior to SF or LMW-NTS alone.