纳米颗粒与肿瘤诊治ppt课件.pptx
《纳米颗粒与肿瘤诊治ppt课件.pptx》由会员分享,可在线阅读,更多相关《纳米颗粒与肿瘤诊治ppt课件.pptx(49页珍藏版)》请在三一办公上搜索。
1、生物医学纳米技术,张宇生物科学与医学工程学院,第四讲:纳米颗粒与肿瘤诊治,生物医学纳米技术,物质尺度,用特殊尺度空间的物质来改变人们的认识!,1纳米(nm)=10-9米(m) 1纳米(nm)=10 埃(A),纳米效应,纳米生物医学,纳米生物学医学:一方面,是利用纳米技术(包括纳米材料)研究生命体的特征,发现新的生命现象和规律,为人类健康和疾病诊断与治疗提供新的理论和方法;另一方面,模拟生命体精细的调节机制,通过仿生研究制备新型纳米材料和建立新的纳米技术。,纳米技术与生物医学的交叉与融合。同时,纳米生物学、纳米医学又是纳米科学与技术的重要研究领域。,纳米物理学纳米化学纳米材料学纳米加工学纳米测量
2、学纳米机械学纳米电子学纳米生物学纳米医学,纳米科学技术,生物医学,纳米技术,纳米生物医学,肿瘤:诊断与治疗,能否象慢性病一样控制?,NCI 2004,Prevention and Control of Cancer Developing nanoscale devices that can deliver cancer prevention agents Designing multicomponent anticancer vaccines using nanoscale delivery vehicles Early Detection and Proteomics Creating im
3、plantable, biofouling-indifferent molecular sensors that can detect cancer-associated biomarkers that can be collected for ex vivo analysis or analyzed in situ, with the results being transmitted via wireless technology to the physician Developing “smart” collection platforms for simultaneous mass s
4、pectroscopic analysis of multiple cancer-associated markers,Cancer NanotechNCI 2004,Imaging Diagnostics Designing “smart” injectable, targeted contrast agents that improve the resolution of cancer to the single cell level Engineering nanoscale devices capable of addressing the biological and evoluti
5、onary diversity of the multiple cancer cells that make up a tumor within an individual Multifunctional Therapeutics Developing nanoscale devices that integrate diagnostic and therapeutic functions Creating “smart” therapeutic devices that can control the spatial and temporal release of therapeutic a
6、gents while monitoring the effectiveness of these agents,Nano-Clinics,Cancer NanotechNCI 2004,Quality of Life Enhancement in Cancer Care Designing nanoscale devices that can optimally deliver medications for treating conditions that may arise over time with chronic anticancer therapy, including pain
7、, nausea, loss of appetite, depression, and difficulty breathing Interdisciplinary Training Coordinating efforts to provide cross-training in molecular and systems biology to nanotechnology engineers and in nanotechnology to cancer researchers Creating new interdisciplinary coursework/degree program
8、s to train a new generation of researchers skilled in both cancer biology and nanotechnology,学科交叉医工结合转化医学,核壳结构磁性荧光纳米棒,Fe3O4,TiO2,Au,Au,Au,Fe3O4,Fe2O3/SiO2,Fe2O3/CdTe/Alg,CdTe QDs,Fe3O4/PLA,丰富多彩的纳米材料,Angew. Chem. Int. Ed. 2007;Nanoscale Res Lett. 2009; J. Phys. Chem. C 2010; Journal of Controlled Rel
9、ease 2008;Materials Letters 2008;Biomaterials 2009;Small, 2010;J Mater Chem 2010; Langmuir 2010; Nanotechnology2011; Adv Func Mater 2011,Development of Diagnostic and Therapeutic Nanoparticle Agents(纳米颗粒作为诊断和治疗制剂),(1)半导体量子点:Semiconductor Quantum Dots (Fluo lable)(2)金属纳米颗粒:Metallic Nanoparticles (SER
10、S, SRP, Thermo)(3)氧化物纳米颗粒:Metal Oxide (Superparamagnetic)(4) 有机/聚合物纳米颗粒:Organic/Polymeric Nanoparticles (Drug Delivery and Targeting)(5) 多功能纳米颗粒:Multifunctional Nanoparticles (Imaging, Detection and Treatment),尺寸:一个重要的纳米特性,Fe3O4 or Fe2O3,单畴,超顺磁,Neel弛豫,Brownian弛豫,磁滞效应,微米对照,100nm,氧化铁纳米粒子SAR值和矫顽力随尺寸的变化
11、关系,不同尺寸区间具有不同的磁学特性,导致不同的生物医学应用原理。10nm,20nm,50nm,100nm, 1m,J. Magn. Magn. Mater. 2004,268: 33(cited 65),D=12.51.1 nm,D=22.52.2nm,Magnetic nanoparticles(MNPs),D=17.31.6 nm,表面修饰,Xiaohu Gao,et al,R. Weissleder, Nat. Biotechnol., 2000, 18, 410-414,W. J. Parak, Nano Lett., 2004, 4, 703707,Angew. Chem. Int
12、. Ed. 2004, 43, 6042 6108,表面:Nano-Bio Bridge-Targeting/Sensing Function,纳米粒子与细胞相互作用,MNPs/pH probe/FA,Free molecules,pH=6,pH=5,pH=7,细胞胞吞作用的类型,?,Nano, 250 nm, 150 nm,50-80nm,40-50nm,巨噬细胞嗜中性粒细胞树枝状细胞,多数细胞,多数细胞,脂肪细胞内皮细胞肌肉细胞,淋巴细胞神经细胞分泌细胞,MRI细胞模型矽肺,吸附与内化动力学过程,隐形-超小-长循环-靶向,Targeting towards Cancer,Nano Drug
- 配套讲稿:
如PPT文件的首页显示word图标,表示该PPT已包含配套word讲稿。双击word图标可打开word文档。
- 特殊限制:
部分文档作品中含有的国旗、国徽等图片,仅作为作品整体效果示例展示,禁止商用。设计者仅对作品中独创性部分享有著作权。
- 关 键 词:
- 纳米 颗粒 肿瘤 诊治 ppt 课件
链接地址:https://www.31ppt.com/p-1912835.html