Cancer Biol Ther:通过抑制外泌体的释放酮替芬可增强癌细胞对阿霉素的敏感性

2017-12-17 MedSci MedSci原创

癌细胞释放的外泌体有助于受体细胞的转移和生长并增加其对化学疗法的抗性。癌症研究中外泌体靶向治疗具有很好的前景。本研究旨在测试肥大细胞稳定剂酮替芬对癌细胞外泌体释放的影响,及其如何改变癌细胞对阿霉素的治疗反应。通过扫描电子显微镜和外泌体定量试剂盒评估三种癌细胞系(MCF7,HeLa和BT549)的外泌体释放。通过荧光法监测外泌体内的阿霉素的释放,并通过磺酰罗丹明-B和集落形成实验测量细胞对阿霉素-酮

癌细胞释放的外泌体有助于受体细胞的转移和生长并增加其对化学疗法的抗性。癌症研究中外泌体靶向治疗具有很好的前景。本研究旨在测试肥大细胞稳定剂酮替芬对癌细胞外泌体释放的影响,及其如何改变癌细胞对阿霉素的治疗反应。

通过扫描电子显微镜和外泌体定量试剂盒评估三种癌细胞系(MCF7,HeLa和BT549)的外泌体释放。通过荧光法监测外泌体内的阿霉素的释放,并通过磺酰罗丹明-B和集落形成实验测量细胞对阿霉素-酮替芬的敏感性。

结果显示,三种细胞系释放出不同量的外泌体,其中BT549释放的量最高,其次是MCF7,然后是HeLa。酮替芬(10μmolL-1)以不同的效率(HeLa> MCF7> BT549)降低三种细胞系外泌体的释放。BT549中外泌体释放的阿霉素量最高,其次是MCF7细胞,最后是HeLa。酮替芬预处理使细胞(HeLa> MCF7> BT549)对多柔比星敏感的致敏因子分别为27,8和1.25。酮替芬增加细胞对阿霉素的敏感性与其对外泌体释放的影响成正比。

综上所述,本研究首次报道了酮替芬调节癌细胞外泌体的释放,并开启了外泌体靶向癌症治疗的新途径。酮替芬对癌细胞中阿霉素外泌体释放的不同作用提示在一些癌症中酮替芬或可增强阿霉素的抗肿瘤作用。

原始出处:

Khan FM, Saleh E, et al., Inhibition of exosome release by ketotifen enhances sensitivity of cancer cells to doxorubicin. Cancer Biol Ther. 2017 Dec 15:1-9. doi: 10.1080/15384047.2017.1394544.

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    2018-08-09 sunylz
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    2017-12-19 131****1460

    学习了受益匪浅

    0

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    2017-12-19 yxch36
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    2017-12-17 天涯183

    非常好的文章.学习了

    0

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