BJC:达沙替尼靶向乳腺癌干细胞增加三阴性乳腺癌化疗敏感性

2018-11-30 MedSci MedSci原创

由于化疗耐药,三阴性乳腺癌(TNBC)的患者预后不佳且肿瘤复发风险较高。这些侵袭性特征部分原因是乳腺癌干细胞(BCSC)的存在。因此,靶向乳腺癌干细胞是攻克三阴性乳腺癌化疗失败的重要内容。BJC近期发表了一篇文章研究这一问题。

由于化疗耐药,三阴性乳腺癌(TNBC)的患者预后不佳且肿瘤复发风险较高。这些侵袭性特征部分原因是乳腺癌干细胞(BCSC)的存在。因此,靶向乳腺癌干细胞是攻克三阴性乳腺癌化疗失败的重要内容。BJC近期发表了一篇文章研究这一问题。

作者建立了紫杉醇(pac)耐药三阴性乳腺癌细胞。与亲代细胞相比,其乳腺癌干细胞亚群的百分比更高。筛选实验表明达沙替尼(一种Src激酶家族抑制剂)在紫杉醇耐药三阴性乳腺癌细胞中可以有效抑制乳腺癌干细胞扩增。研究结果表明,在亲代和紫杉醇耐药三阴性乳腺癌细胞中,达沙替尼可阻断紫杉醇诱导的乳腺癌干细胞富集及Src的活化。有趣的是,达沙替尼可以诱导紫杉醇抗性间充质细胞的上皮分化,导致其对紫杉醇的敏感性增强。达沙替尼和紫杉醇的联合治疗不仅降低了乳腺癌干细胞数量,而且还协同降低了紫杉醇耐药细胞的细胞活力。乳腺癌的临床前模型进一步证明了达沙替尼/紫杉醇组合可以抑制肿瘤生长。

文章最后认为,达沙替尼是一种很有前途的抗乳腺癌干细胞药物,可与紫杉醇联合使用以克服三阴性乳腺癌的化疗耐药性。

原始出处:

Jun Tian, Fatmah Al Raffa, et al. Dasatinib sensitises triple negative breast cancer cells to chemotherapy by targeting breast cancer stem cells. BJC. November 2018 doi: https://doi.org/10.1038/s41416-018-0287-3

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    2018-12-02 xlysu
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