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논문 상세정보

Intracellular Trafficking of Transferrin-Conjugated Liposome/DNA Complexes by Confocal Microscopy

Abstract

Intracellular trafficking of transferrin-conjugated dimethyldioctadecyl-ammonium bromide liposome $(T_f-liposome)/DNA$ complexes in HeLa cells was studied using the double-labeled fluorescence technique and confocal microscopy. The size of the $T_f-liposome/DNA$ complex was about 367 nm in diameter and the zeta-potential of it at a 5:1 (w/w) ratio was almost neutral. The intracellular pathway of the $T_f-liposome/DNA$ complex, noted as green (FITC), red (rhodamine) or yellow (FITC + rhodamine) fluorescence, was elucidated from the plasma membrane to the endosome (or lysosome), and finally to the nucleus. The results of this study indicate that plasmid DNA enters into the nucleus not only as a free form but as an associated form complexed with $T_f-liposome$. More interestingly, the $T_f-liposome$ undergoes a nuclear location in the form of ordered structures. This could be a very useful piece of information in designing a safe and advanced gene delivery system.

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참고문헌 (12)

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이 논문을 인용한 문헌 (1)

  1. 2005. "" Macromolecular research, 13(3): 218~222 

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