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Copyright of Iron Steel Vanadium Titanium is the property of Iron Steel Vanadium Titanium Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

【目的】研究布托啡诺在临床使用剂量范围内通过抑制ABCB1的转运功能增加白血病耐药细胞的化 疗药物敏感性。【方法】采用HL60及其ABCB1过表达的耐药细胞株HL60/VCR、K562及其ABCB1过表达的耐药 细胞株K562/ADR 均在培养环境中加入含胎牛血清的DMEM 或RPMI-1640的培养液中进行培养。采用MTT法 检测布托啡诺的细胞毒性，通过流式细胞仪检测阿霉素（DOX）在HL60/VCR细胞内的累积程度；加入布托啡诺 培养72 h后用免疫荧光观察ABCB1在细胞膜表面的形态和分布变化以及采用Western Blotting检测ABCB1的表达 水平。【结果】布托啡诺能将K562/ADR细胞的阿霉素的抵抗倍数由48.1倍下降到9.6倍，长春新碱（VCR）的抵抗倍 数由108.4倍下降到20.7倍，HL60/VCR的DOX的抵抗倍数由37.8倍下降到7.6倍，长春新碱抵抗倍数由23.4下降 到4.8倍，差异均有统计学意义。ABCB1的表达水平及其在细胞膜上的定位没有变化。【结论】布托啡诺明显降低 阿霉素和长春新碱在ABCB1过表达的白血病耐药细胞株中的IC50，有效增加阿霉素在HL60/VCR细胞内的累积水 平。布托啡诺不改变HL60/VCR和K562/ADR细胞ABCB1的表达水平和ABCB1在细胞膜表面的形态和定位。

Copyright of Journal of Agro-Environment Science is the property of Journal of Agro-Environment Science Editorial Board and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Agro-Environment Science is the property of Journal of Agro-Environment Science Editorial Board and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Agro-Environment Science is the property of Journal of Agro-Environment Science Editorial Board and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

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