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Small:重磅!科学家成功利用免疫细胞运输抗癌药物至肿瘤靶点

2017-01-06 佚名 生物谷

图片来源:www.sciencedaily.com 很多研究团队都在开发新型安全有效的方法来运输抵御癌症的药物,同时还不损伤健康的细胞;而有些研究人员则在寻找其它方法通过增强患者机体自身的免疫系统功能来抵御癌细胞,近日一项刊登于国际杂志Small上的研究报告中,来自宾州州立大学的研究人员通过研究将选定的抗癌药物包裹到生物可降解的聚合物纳米颗粒中,开发出了一种小型靶向系统来攻击特殊类型的癌症

图片来源:www.sciencedaily.com


很多研究团队都在开发新型安全有效的方法来运输抵御癌症的药物,同时还不损伤健康的细胞;而有些研究人员则在寻找其它方法通过增强患者机体自身的免疫系统功能来抵御癌细胞,近日一项刊登于国际杂志Small上的研究报告中,来自宾州州立大学的研究人员通过研究将选定的抗癌药物包裹到生物可降解的聚合物纳米颗粒中,开发出了一种小型靶向系统来攻击特殊类型的癌症。

研究人员Jian Yang指出,运输药物至肿瘤的传统方法就是将药物置于某种类型的纳米颗粒中,随后再将纳米颗粒注射到患者血液中,由于纳米颗粒非常小,如果其到达肿瘤位点后就会有机会渗透血管壁,而肿瘤的血管系统往往会发生渗漏。利用能够自动锁定癌细胞的特殊蛋白、肽类或抗体包被的纳米颗粒就能够改善同癌细胞相互作用的可能性,然而这仍然是一种被动的癌症药物运输技术,如果纳米颗粒不能够进入到肿瘤中,起就没有机会将药物运输到癌症患处。

文章中,研究人员想通过研究开发一种活性方法将药物靶向运输到肿瘤中;研究者Dong说道,我从事免疫学和癌症研究10年了,我们很清楚知道如何制造能够进行生物降解的纳米颗粒,当然我们还对癌症的微环境进行了研究,还发现,肿瘤的微环境会产生多种炎性信号分子,而机体一旦发生炎症这种信号分子的产生就会增强。

机体的免疫细胞能够对炎性信号产生反应,在自然状况下免疫细胞能够被吸引到肿瘤位点,这就使得免疫细胞或许能够作为研究者纳米颗粒的的主动运输系统,当然相同的技术或许同样适用于感染性疾病和其它疾病的研究。在这项技术的首个验证实验中,研究者对循环的黑色素瘤细胞进行了靶向研究,研究者表示,他们能够利用一种新型的生物降解、能够发光的多聚纳米颗粒,同时装载黑色素瘤特殊药物,并且以免疫细胞作为纳米颗粒的运输载体,结果表明,免疫细胞能够在剪应力状况下同黑色素瘤细胞结合,而这类似于血管中的结合,下一步研究者计划在动物模型和实体瘤中进行研究。

最后研究者表示,这项研究首次阐明了利用免疫细胞来运输抗癌药物能够发挥有效的抗癌效果,当然这种新型技术并不只是能够用来治疗黑色素瘤,研究者只是利用黑色素瘤对这项技术进行了证实,后期他们还将继续深入研究,利用这种新型的癌症药物运输技术靶向治疗更多类型的癌症。

原始出处

Zhiwei Xie, Yixue Su, Gloria B. Kim, Erhan Selvi, Chuying Ma, Virginia Aragon-Sanabria, Jer-Tsong Hsieh, Cheng Dong, Jian Yang.Immune Cell-Mediated Biodegradable Theranostic Nanoparticles for Melanoma Targeting and Drug Delivery.Small.2016

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    2017-01-08 sunylz
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    2017-01-08 膀胱癌
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    2017-01-08 江川靖瑶
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    2017-01-08 xxxx1054

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