癌变·畸变·突变 ›› 2009, Vol. 21 ›› Issue (5): 353-357.doi: 10.3969/j.issn.1004-616x.2009.05.006

• 论著 • 上一篇    下一篇

槲皮素对人子宫内膜癌耐药细胞株B-MD-C1(ADR+/+)多药耐药基因mdr1及P-gp蛋白表达的影响

单保恩;杨俊玲   

  1. 河北医科大学第四附属医院科研中心,河北 石家庄 050011
  • 收稿日期:2009-02-27 修回日期:2009-05-21 出版日期:2009-09-30 发布日期:2009-09-30
  • 通讯作者: 单保恩

Mechanisms of Multidrug Resistance Reversal onB-MD-C1(ADR+/+)by Quercetin

SHAN Bao-en; YANG Jun-ling   

  1. Research Center of the Fourth Hospital of Hebei Medical University, Shijiazhuang 050011, Hebei,China
  • Received:2009-02-27 Revised:2009-05-21 Online:2009-09-30 Published:2009-09-30
  • Contact: SHAN Bao-en

摘要: 背景与目的: 探讨槲皮素对人子宫内膜癌耐药细胞株B-MD-C1(ADR+/+)多药耐药基因mdr1及P-gp蛋白表达的影响。 材料与方法: 经槲皮素干预B-MD-C1(ADR+/+)细胞后,RT-PCR法检测细胞多药耐药基因mdr1表达的变化;免疫组织化学法检测多药耐药蛋白P-gp表达的变化;共聚焦激光扫描显微镜检测耐药细胞及相应敏感细胞内阿霉素(ADM)的分布情况;MTT法检测槲皮素作用后B-MD-C1(ADR+/+)细胞对化疗敏感性的变化。 结果: 经不同浓度槲皮素干预后,B-MD-C1(ADR+/+)细胞多药耐药基因mdr1及相应蛋白P-gp表达水平下调(P<0.05);槲皮素干预后,能恢复ADM在B-MD-C1(ADR+/+)细胞内的分布,增加细胞内ADM浓度,从而逆转细胞的耐药性(P<0.05)。 结论: 槲皮素逆转B-MD-C1(ADR+/+)细胞多药耐药性,该作用可能与下调细胞多药耐药基因mdr1及其编码蛋白P-gp的表达有关。

关键词: 槲皮素, 多药耐药, mdr1, P-gp

Abstract: BACKGROUND AND AIM: Effects of quercetin on expressions of mdr1 gene and P-glycoprotein in B-MD-C1(ADR+/+) cell line were studied in vitro. MATERIALS AND METHODS: After treatment with or without various concentrations of quercetin (10, 20, 40 μmol/L) for 48 h, the expression in mdr1 gene in B-MD-C1(ADR+/+) cell was detected by RT- PCR and expression of P-gp protein with IHC. The chemosensibility of B-MD-C1(ADR+/+) cells was evaluated by means of MTT. Changes of subcellular distribution of ADM in B-MD-C1(ADR+/+) cell was examined by confocal scanning laser microscopy (CSLM). RESULTS: After treatment with different concentrations of quercetin (10, 20, 40 μmol/L) for 48 h, the expression levels of mdr1 gene and P-glycoprotein in B-MD-C1(ADR+/+) cells were decreased significantly(P<0.05). The abnormal distribution of ADM in B-MD-C1(ADR+/+) cells was restored. CONCLUSION: Quercetin could reverse the multidrug resistance by down-regulating the expression of mdr1 gene and P-glycoprotein and restoring the distribution of ADM in B-MD-C1 (ADR+/+) cells.

Key words: uercetin, multidrug resistance, mdr1, P-glycoprotein

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