吗啡对C6胶质瘤细胞嘌呤核苷酸代谢相关酶基因表达的影响

被引:21
作者
刘剑凯
洪敏
赵小冬
机构
[1] 吉林大学基础医学院生物化学与分子生物学教研,吉林大学基础医学院生物化学与分子生物学教研室,吉林大学中日联谊医院耳鼻喉头颈外科,
关键词
吗啡; 神经胶质瘤; 腺嘌呤核苷酸类; 腺苷激酶; 基因表达;
D O I
暂无
中图分类号
R739.4 [神经系肿瘤];
学科分类号
100214 ;
摘要
目的 研究吗啡对C6胶质瘤细胞嘌呤核苷酸合成代谢与分解代谢的影响。方法 吗啡 (10 μg/ml培养基 )作用于C6胶质瘤细胞 6h、12h、2 4h、4 8h、72h ;纳络酮 (1μmol/L)作用于C6胶质瘤细胞 1h后 ,加吗啡 (10 μg/ml)作用 2 4h。提取细胞总RNA ,采用反转录 聚合酶链反应 (RT PCR)方法检测次黄嘌呤 鸟嘌呤磷酸核糖转移酶 (HGPRT)及腺苷激酶 (AK)的基因转录产物 ;采用反转录 聚合酶链反应及Southern(RT PCR Southern)杂交方法检测黄嘌呤脱氧酶 (XD) /黄嘌呤氧化酶 (XO)基因转录产物。结果 C6胶质瘤细胞暴露于吗啡 6h ,12h ,2 4h ,4 8h ,HGPRT基因表达均明显降低 ;而C6胶质瘤细胞AK基因表达在暴露于吗啡 2 4h明显降低 ;HGPRT与AK基因表达又分别于吗啡作用胶质瘤细胞 72h和 4 8h回升 ;纳络酮不能阻断吗啡对HGPRT与AK基因表达降低的作用。吗啡作用于C6胶质瘤细胞与相应时段对照组相比 ,XD/XO基因转录产物均明显增多 ;纳络酮能够阻断吗啡对XD/XO基因表达增强的作用。结论 吗啡通过其他非 μ受体途径介导对C6胶质瘤细胞嘌呤核苷酸补救合成关键酶HGPRT与AK基因表达降低的作用 ;吗啡通过 μ受体途径介导对C6胶质瘤细胞嘌呤核苷酸分解代谢关键酶XD/XO基因表达增强的作用。
引用
收藏
页码:46 / 50
页数:5
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