摘要
长春新碱作用于~3H—肌醇标记的人早幼粒白血病HL—60细胞.发现~3H—PI急剧减少,在检测的1～120min内.仅为对照组的38.55％～61.01％.而~3H—PIP、~3H—PIP_2含量无明显变化.表明长春新碱不影响HL—60细胞PI激酶和PIP激酶活性。却迅速且持久地促进PI的水解;同时检测到长春新碱明显抑制细胞增殖和DNA合成.提示长春新碱抑制HL—60细胞增殖与干扰肌醇磷脂代谢有关。
Human promyelocytic leukemia HL - 60 cells labelled with 3H - inositol were treated with vincristine (VCR), it was found that the radioactivity of 3H-phosphatidyl inositol - 4-phosphate (PIP) and 3H - Phosphatidyli-nositol - 4,5 - bisphosphate(PIP2) had no obvious change, but that of 3H-phosphatidyl inositol (PI) decreased rapidly, only accounted for 38. 55%~61.01% of the control during 1~ 120 min of the treatment. It showed that VCR
did not affect the activity of PI kinase and PIP kinase, but enhanced the hydrolysis of PI of HL - 60 cells. The inhibitorty effect of VCR upon cell proliferation and DNA synthesis was observed after above biochemical changes,these results suggest that VCR may inhibit HL-60 cells proliferation by interfering the metabolism of phosphoininositides.
出处
《中国药理学通报》
CAS
CSCD
北大核心
1993年第3期210-212,共3页
Chinese Pharmacological Bulletin
基金
国家自然科学基金资助课题
关键词
长春新碱
肌醇磷脂代谢
白血病
vincristine
phosphoinositide metabolism
leukemia
cell proliferation
