ACS Nano:暨南大学陈填烽课题组发现用于肿瘤同步放化疗的纳米药物

2017-05-27 佚名 暨南大学

<div><span style="">近日,暨南大学化学与材料学院陈填烽教授和中国科学院深圳先进技术研究院喻学锋研究员合作,在靶向纳米载药体系研究中取得重要进展,<span style="font-weight: bold;">设计合成了一种核壳结构的靶向纳米复合体系,从而实现了肿瘤靶向的放化疗法</span>。</span></div><div><br></div><div>此项研究成果发表在纳米领域顶级期刊ACS Nano(IF =13.334)上,研究工作得到了***万人计划青年拔尖人才项目、国家高技术研究发展计划(863计划)项目、国家自然科学基金及广东省自然科学杰出青年基金等项目的资助。</div><div><br></div><div>陈填烽课题组在前期工作中,以多种蛋白、多糖、多肽及小分子作为修饰剂,合成了多个系列不同形貌的纳米硒(SeNPs),并用其为载体来负载<a class="channel_keylink" href="http://edu.medsci.cn/course/search.do?w=%E4%B8%B4%E5%BA%8A" target="_bla

近日,暨南大学化学与材料学院陈填烽教授和中国科学院深圳先进技术研究院喻学锋研究员合作,在靶向纳米载药体系研究中取得重要进展,设计合成了一种核壳结构的靶向纳米复合体系,从而实现了肿瘤靶向的放化疗法

此项研究成果发表在纳米领域顶级期刊ACS Nano(IF =13.334)上,研究工作得到了中组部万人计划青年拔尖人才项目、国家高技术研究发展计划(863计划)项目、国家自然科学基金及广东省自然科学杰出青年基金等项目的资助。

陈填烽课题组在前期工作中,以多种蛋白、多糖、多肽及小分子作为修饰剂,合成了多个系列不同形貌的纳米硒(SeNPs),并用其为载体来负载临床用的抗肿瘤药物,发现可实现良好的协同化疗增敏的效果。在此基础上,该团队通过整合Au NRs的放射增敏特性和SeNPs的抗肿瘤活性,设计合成了核壳结构的Au@Se纳米复合体系(NCs),并进行双靶向分子表面修饰,实现肿瘤靶向的同步放化疗法。该纳米复合体系表现出优越的肿瘤靶向能力、良好的生物安全性、高效的放射增敏作用和显着的体内抗肿瘤效果。进一步的机理研究表明,NCs和X-ray联合应用是通过死亡受体途径诱导肿瘤细胞凋亡并促进ROS过量产生从而激活下游ROS介导的信号通路,导致大大提高抗肿瘤活性。这项研究为肿瘤靶向的放化疗法提供了一种有效的临床可行的技术。

目前,放疗和化疗是临床上肿瘤最常用的治疗方法,但其疗效受到射线辐射剂量和药物毒性的极大限制。因此,开发高效低毒的放化疗增敏剂具有重大意义。近年来,大量的无机金属纳米粒子被应用于放疗增敏。其中,金纳米粒子(AuNPs)因其独特的光学性质、良好的组织相容性、易控的表面修饰性等使其在生物及医学领域有了广阔应用前景。硒是人体必需的重要微量元素,以硒为原料来设计纳米体系,既能发挥硒的生物学功能,同时又兼具纳米载体的载药与协同功能。

暨南大学陈填烽课题组发现用于肿瘤同步放化疗的纳米药物



陈填烽课题组一直致力于靶向纳米药物的化学设计及其在肿瘤诊疗中的应用及机理研究,相继在AngewChemInt Edit、ACS Nano、 Advanced Functional Materials、 Biomaterials等本领域重要期刊上发表研究论文超过30篇。其中,15篇论文被Advanced Functional Materialsc及Journal of Materials Chemistry B等杂志当做封面文章发表。

原始出处:

Yanzhou Chang, Lizhen He, Zhibin Li, et al. Designing Core–Shell Gold and Selenium Nanocomposites for Cancer Radiochemotherapy. ACS Nano, 2017, 11 (5), pp 4848–4858. DOI: 10.1021/acsnano.7b01346.Publication Date (Web): May 1, 2017.

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    2017-06-05 laoli

    学习了,谢谢分享!

    0

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    2017-05-29 yaanren
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    2017-05-29 yzh399
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    2017-05-29 xugc
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    2017-05-27 三生有幸9135

    学习一下谢谢分享

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癌症可被视为复杂的动态系统,因为它们具有许多可随时间和空间变化的相互影响的部分。也许最知名的复杂动态系统是天气,类似于天气预报,莫菲特癌症中心综合数学肿瘤科的研究人员正在使用数学方法来解释许多变量,以寻找新的方法来理解和控制癌症。他们最近的研究显示,癌症研究5月刊的封面文章显示,数学模型可用于预测不同肿瘤细胞群体如何相互作用,并对不断变化的环境作出反应。

NEJM:利用基因测序谱写“肿瘤进化树”

近几年来,肿瘤产生耐药突变以逃逸靶向治疗的假说已被业内科学家所默认。最近一段时间,几项重要的研究对这一假说进行了充分的证实,肿瘤学家Charles Swanton领导的肺癌癌症进化阻断计划(TRACERx)让耐药逃逸的假说逐渐为更多人所认可。

Crit Care Med:感染性休克肿瘤患者:自由输血策略vs 限制输血策略

目前,癌症患者输血的观念受到了挑战,有研究显示,输血可能促进癌症复发。2017年5月,发表在《Crit Care Med》的一项研究对感染性休克肿瘤患者自由 vs 限制输血策略的28日死亡率进行了比较。

JCO:相对于双臂研究,你听说过滚动臂研究吗?

目前大部分的随机肿瘤试验是双臂研究,它们研究了与标准疗法相比新疗法的疗效,从而让大部分的患者接受非实验性疗法。与此相反,多臂研究在评估多个实验性治疗时,有效地共享了同一个对照臂。传统的多臂试验的一个主要瓶颈是来自不同公司的治疗所需药物往往不能在试验开始的同一时间即达到需求。因此研究人员评估了一个滚动臂(在一个滚动的基础上增加或删除臂)设计平台的潜在收益。研究人员定义这种滚动臂设计能最大限度地减少随

Cancer Res:研究表明注射肿瘤抑制因子激活剂直达病灶,大大降低毒副作用!

科学家在“癌症研究”杂志上报道,用激活天然强大的肿瘤抑制剂的药物直接注射肿瘤可增强药物在局部及其传播地点攻击肿瘤的能力。