12/12 2020 团队提出一种超高场T1-T2双模态磁共振血管成像策略,并首次设计合成了基于超小氧化铁纳米粒子的T1-T2双模态超高场磁共振造影剂(UDIOC)。UDIOC在超高场下具有高效的磁共振对比能力,可以通过对比增强磁共振血管造影(CE-MRA)对血管结构进行实现高分辨率的成像,并且基于UDIOC的T1-T2双模态超高场动态对比增强磁共振成像(DCE-MRI)能够对 12/01 2020 在文章中,他们根据5种不同的自组装结构(核-壳结构、卵-壳结构、核-卫星结构、异源二聚体结构、核-壳-卫星结构)归纳了近5年来各种结构组装策略的相关进展,介绍了其合成及组装策略,结构优势,并对MSN自组装纳米诊疗制剂在生物传感、医学成像、疾病治疗中的应用进行了综述(见下图)。最后,作者着重讨论了MSN自组装纳米诊疗制剂在未来临床转化需要面对的挑战。这篇综述有助于读者了解基于MSN自组装纳米材料的组 11/10 2020 本文报道了由自组装的银纳米簇和pH敏感的电荷反转配体组成的生物膜响应性纳米抗生素(rAgNAs),其在生物膜微环境中可以选择性地增强其杀菌活性。在中性生理条件下,rAgNAs的杀菌活性是自抑制的,因为有毒的银离子的释放被大大抑制了。然而,进入酸性生物膜微环境后,rAgNAs不仅显示出电荷逆转以促进局部积累和保留,而且还分解成小的银纳米簇,从而实现了深度渗透和加速的银离子释放,大大增强了杀菌活性(图 |
Prof. Daishun Ling (凌代舜) Distinguished professor of Chemistry Frontiers Science Center for Transformative Molecules School of Chemistry and Chemical Engineering National Center for Translational Medicine Shanghai Jiao Tong University, Shanghai, China Address: 800 Dongchuan RD. Minhang District, Shanghai, China Email: dsling@sjtu.edu.cn Web: www.dsling.cn | Our laboratory is working on the development of smart biomaterials and nanomedicine strategies to assist the diagnosis and treatment of challenging diseases such as cancer and neurodegenerative diseases. We are focusing on the dynamic assembly/disassembly of functional nanoparticles, stimuli-responsive nanomedicines, designed synthesis and surface engineering of functional nanomaterials for biomedical applications. |
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