Reversal of drug-resistance by noscapine chemo-sensitization in docetaxel resistant triple negative breast cancer.

Reversal of drug-resistance by noscapine chemo-sensitization in docetaxel resistant triple negative breast cancer.
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DOI:
10.1038/s41598-017-15531-1
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发表时间:
2017-11-20
期刊:
影响因子:
4.6
通讯作者:
Singh M
Singh M
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Doddapaneni R;Patel K;Chowdhury N;Singh M

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多药耐药性(MDR)是癌症治疗的主要障碍。在这里,我们首次研究了低浓度诺斯卡平 (Nos) 与多西他赛 (DTX) 联合克服三阴性乳腺癌 (TNBC) 耐药性的化疗增敏作用。体外实验表明,Nos显着抑制TNBC野生型(p<0.01)和耐药(p<0.05)TNBC细胞的增殖。与传统的 2D 系统相比,Nos 后进行 DTX 处理显着提高了 3D 模型中的细胞活力(约 1.3 倍)(p< 0.05)。体内口服Nos(100mg/kg)后静脉注射DTX(5mg/kg)脂质体治疗显示野生型(p<0.001)和耐药(p<0.05)异种移植物中的异种移植肿瘤均出现消退。在野生型异种移植物中,与单独使用 Nos 和 DTX 组相比,Nos 加 DTX 组的肿瘤体积分别减少了 5.49 倍和 3.25 倍。在耐药异种移植物中,与单独使用Nos和DTX相比,用Nos加DTX处理的​​异种移植物中的肿瘤体积分别显着减小2.33和1.41倍(p<0.05),并下调抗凋亡因子和多药耐药蛋白的表达。总的来说,Nos 的化疗增敏作用和 DTX 方案提供了一种有前途的化疗策略,及其在耐药 TNBC 治疗中的重要作用。
Multidrug resistance (MDR) is a major impediment to cancer treatment. Here, for the first time, we investigated the chemo-sensitizing effect of Noscapine (Nos) at low concentrations in conjunction with docetaxel (DTX) to overcome drug resistance of triple negative breast cancer (TNBC). In vitro experiments showed that Nos significantly inhibited proliferation of TNBC wild type (p < 0.01) and drug resistant (p < 0.05) TNBC cells. Nos followed by DTX treatment notably increased the cell viability (~1.3 fold) markedly (p < 0.05) in 3D models compared to conventional 2D systems. In vivo oral administration of Nos (100 mg/kg) followed by intravenous DTX (5 mg/kg) liposome treatment revealed regression of xenograft tumors in both wild type (p < 0.001) and drug-resistant (p < 0.05) xenografts. In wild type xenografts, combination of Nos plus DTX group showed 5.49 and 3.25 fold reduction in tumor volume compared to Nos and DTX alone groups, respectively. In drug-resistant xenografts, tumor volume was decreased 2.33 and 1.41 fold in xenografts treated with Nos plus DTX significantly (p < 0.05) compared to Nos and DTX alone respectively and downregulated the expression of anti-apoptotic factors and multidrug resistance proteins. Collectively, chemo-sensitizing effect of Nos followed by DTX regime provide a promising chemotherapeutic strategy and its significant role for the treatment of drug-resistant TNBC.
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