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Unveiling cellular internalization Dynamics of Single Gold Nanorods by Tracking Their Orientational and Translational Motions

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CCS Chemistry 2022年第4期4卷 1295-1304页

作者： Dong Xu Yi Du Feng Ge Yan He Edward S.Yeung National Engineering Laboratory for Rice and By-Products Further Processing College of Food Science and EngineeringCentral South University of Forestry&TechnologyChangsha 410004 State Key Laboratory of Chemo/Biosensing and Chemometrics College of Chemistry and Chemical EngineeringCollege of BiologyHunan UniversityChangsha 410082 Department of Chemistry Key Laboratory of Bioorganic Phosphorus Chemistry and Chemical Biology(Ministry of Education)Tsinghua UniversityBeijing 100084 Department of Chemistry Iowa State UniversityAmesIA 50011

Single nanoparticle tracking(SPT)is a unique and powerful tool to investigate the interaction between nanoparticles and cells,which is of considerable importance for nanotechnology applications in biomedical fields and in-depth understanding of biological ***,previous work typically focused on translations of single nanoparticles while they undergo both translational and rotational *** this study,we obtained both the translational and rotational dynamics of single gold nanorods during their cellular internalization process using dual-channel polarization *** particular,the azimuth and polar angles were integrated into a polar coordinate systemto obtain three general orientation distribution patterns,found to have a close relationship with the nanoparticle cellular internalization process and time-dependent ***,the patterns accompanied by trajectories,translational and rotational coefficients,the azimuth and polar angles,and other parameters provided a wealth of knowledge on the nanoparticle cellular internalization dynamics with unprecedented *** observed that the gold nanorods could initially assume a tip-first quick rotation state with partially restricted orientations,then change to a strongly confined near-vertical insertion state with slight angular fluctuations,and eventually transform into a random and fast rotation *** methodology opens up a new avenue for a detailed understanding of biological processes.

关键词： orientation distribution pattern nanoparticle cellular internalization orientational and translational motion single nanoparticle tracking

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