Eur Urol:福音!研究人员发现新的药物可有效对抗耐药型膀胱癌

2017-04-24 MedSci MedSci原创

近日,来自哥伦比亚大学的一项新的研究发现小鼠动物实验中,一种基于疟疾寄生虫蛋白质而合成的药物可阻止对化疗耐药的膀胱癌肿瘤的生长,这一发现或可为对当前标准治疗无效果的膀胱癌患者带来新的治疗方案,该研究发现已发表于European Urology。 该研究中所发现的疟疾寄生虫蛋白是一种名为VAR2CSA的蛋白,这种蛋白通常在疟原虫中发现,可借助此蛋白将抗癌药物输送至肿瘤中。 研究人员解释道

近日,来自哥伦比亚大学的一项新的研究发现小鼠动物实验中,一种基于疟疾寄生虫蛋白质而合成的药物可阻止对化疗耐药的膀胱癌肿瘤的生长,这一发现或可为对当前标准治疗无效果的膀胱癌患者带来新的治疗方案,该研究发现已发表于European Urology。

该研究中所发现的疟疾寄生虫蛋白是一种名为VAR2CSA的蛋白,这种蛋白通常在疟原虫中发现,可借助此蛋白将抗癌药物输送至肿瘤中。

研究人员解释道,VAR2CSA可附着于一组特定的糖链——“癌硫酸软骨素糖胺聚糖链(ofCS)”,ofCS通常只存在于肿瘤细胞和胎盘组织中。

因为顺铂耐药型膀胱癌通常具有异常高水平的ofCS,因此研究人员决定探究使用VAR2CSA治疗此种膀胱癌的效果。为此,研究人员将人类患者中具有高度侵袭性的膀胱癌肿瘤植入小鼠体内。

基于VAR2CSA研究人员研发了一种实验性药物——将VAR2CSA疟疾蛋白特定结合域与三细胞毒性化合物结合。

然后使用此试验性药物治疗小鼠,结果发现实验组80%的小鼠存活期超过70天,而未经治疗的对照组小鼠则未有此发现。

总而言之,该研究发现此类基于疟疾寄生虫蛋白质的药物可有效治疗小鼠化学耐药型膀胱癌。目前,研究人员正在研究批量生产此种药物以用于临床试验。

原始出处:

Catharine Paddock. Drug based on malaria protein shows promise against treatment-resistant bladder cancer. MNT, 20 April 2017


Seiler R, Oo HZ, Tortora D, et al. An Oncofetal Glycosaminoglycan Modification Provides Therapeutic Access to Cisplatin-resistant Bladder Cancer. Eur Urol. 2017 Apr 10. pii: S0302-2838(17)30232-4. doi: 10.1016/j.eururo.2017.03.021.


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    2017-05-01 simonlq

    OFCS是个什么成分?

    0

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    2017-04-27 ylzr123

    感谢小编为我们精心准备了如此精辟的精神大餐,小编辛苦了,点个赞吧!

    0

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    2017-04-24 dhzzm

    学习了分享了

    0

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    2017-04-24 shaosai

    好好学习,涨知识

    0

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    2017-04-24 lyh994

    模式生物研究是一条破迷之路

    0

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    2017-04-24 cqykthl

    耐药是每种疾病的难题啊!

    0

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