Document Detail

Bioimaging of Hyaluronic Acid Derivatives Using Nano-Sized Carbon Dots.
MedLine Citation:
PMID:  22804331     Owner:  NLM     Status:  Publisher    
Fluorescent nano-sized carbon dots (Cdots) are an emerging bioimaging agent with excellent chemical inertness and marginal cytotoxicity in comparison to widely used semiconductor quantum dots. In this work, we report the application of Cdots for real time bioimaging of target specific delivery of hyaluronic acid (HA) derivatives. Polyethylene glycol (PEG) diamine capped Cdots were synthesized by the pyrolysis of citric acid in a hot solvent. The synthesized Cdots showed strong fluorescence under UV excitation with emission properties dependending on the excitation wavelength. HA-Cdot conjugates were synthesized by amide bond formation between amine groups of Cdot and carboxylic groups of HA. After confirmation of the negligible cytotoxicity of Cdots and HA-Cdot conjugates, in vitro bioimaging was carried out for target specific intracellular delivery of the HA-Cdot conjugates by HA receptor mediated endocytosis. Furthermore, in vivo real time bioimaging of Cdots and HA-Cdot conjugates exhibited the target specific delivery of HA-Cdot conjugates to the liver with abundent HA receptors. Taken together, we could confirm the feasibility of HA derivatives as a target specific drug delivery carrier for the treatment of liver diseases and Cdots as a promising bioimaging agent.
Eun Ji Gho; Ki Su Kim; Yi Rang Kim; Ho Sang Jung; Songeun Beack; Won Ho Kong; Giuliano Scarcelli; Seok Hyun Yun; Sei Kwang Hahn
Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-7-17
Journal Detail:
Title:  Biomacromolecules     Volume:  -     ISSN:  1526-4602     ISO Abbreviation:  -     Publication Date:  2012 Jul 
Date Detail:
Created Date:  2012-7-18     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  100892849     Medline TA:  Biomacromolecules     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
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