江西师范大学学报(自然科学版)
江西師範大學學報(自然科學版)
강서사범대학학보(자연과학판)
JOURNAL OF JIANGXI NORMAL UNIVERSITY(NATURAL SCIENCES EDITION)
2014年
6期
624-631
,共8页
申源%叶树虹%汪莉%陈受惠
申源%葉樹虹%汪莉%陳受惠
신원%협수홍%왕리%진수혜
CdS-NH2%EcoRI%DNA%CdS-NH2-EcoRI复合物%荧光光谱%圆二色谱%原子力显微镜%琼脂糖凝胶电泳
CdS-NH2%EcoRI%DNA%CdS-NH2-EcoRI複閤物%熒光光譜%圓二色譜%原子力顯微鏡%瓊脂糖凝膠電泳
CdS-NH2%EcoRI%DNA%CdS-NH2-EcoRI복합물%형광광보%원이색보%원자력현미경%경지당응효전영
CdS-NH2%EcoRI%DNA%CdS-NH2-EcoRI composites%fluorescence spectroscopy%CD spectroscopy%atomic force microscope%agarose gel electrophoresis
采用荧光光谱、紫外光谱( UV-vis)、圆二色谱( CD)、透射电镜( TEM)、原子力显微镜( AFM)、琼脂糖凝胶电泳等技术研究 CdS-NH2-EcoRI复合物与 DNA的相互作用。研究发现:CdS-NH2纳米粒子与pBR322DNA结合后会延迟EcoRI的酶切反应。 DNA的曲率和纳米粒子的粒径都是影响结合作用的因素,曲率较大的环状DNA比线性DNA能更好地与纳米粒子结合,小粒径的CdS-NH2纳米粒子则更易结合到DNA上。并研究了DNA与CdS-NH2纳米粒子之间的作用机理。
採用熒光光譜、紫外光譜( UV-vis)、圓二色譜( CD)、透射電鏡( TEM)、原子力顯微鏡( AFM)、瓊脂糖凝膠電泳等技術研究 CdS-NH2-EcoRI複閤物與 DNA的相互作用。研究髮現:CdS-NH2納米粒子與pBR322DNA結閤後會延遲EcoRI的酶切反應。 DNA的麯率和納米粒子的粒徑都是影響結閤作用的因素,麯率較大的環狀DNA比線性DNA能更好地與納米粒子結閤,小粒徑的CdS-NH2納米粒子則更易結閤到DNA上。併研究瞭DNA與CdS-NH2納米粒子之間的作用機理。
채용형광광보、자외광보( UV-vis)、원이색보( CD)、투사전경( TEM)、원자력현미경( AFM)、경지당응효전영등기술연구 CdS-NH2-EcoRI복합물여 DNA적상호작용。연구발현:CdS-NH2납미입자여pBR322DNA결합후회연지EcoRI적매절반응。 DNA적곡솔화납미입자적립경도시영향결합작용적인소,곡솔교대적배상DNA비선성DNA능경호지여납미입자결합,소립경적CdS-NH2납미입자칙경역결합도DNA상。병연구료DNA여CdS-NH2납미입자지간적작용궤리。
In this work,the interaction between DNA and CdS-NH2-EcoRI composites was investigated by infrared spectroscopy,UV-vis spectroscopy,fluorescence spectroscopy,CD spectroscopy,atomic force microscope,agarose gel electrophoresis,etc. It was shown that the restriction enzyme reaction of EcoRI would be retarded after CdS-NH2 nanoparticles combined with pBR322DNA. Both the curvature of DNA and the particle size of nanoparticles are the crucial factors influencing the groove binding. Circular-like DNA with larger curvature is more easily combined with nanoparticles than linear DNA. And CdS-NH2 nanoparticles with smaller size were more easily combined with DNA. The interaction mechanism of DNA and CdS-NH2 nanoparticles was also studied in this work.