Article (Scientific journals)
Low molecular weight poly (2-dimethylamino ethylmethacrylate) polymers with controlled positioned fluorescent labeling: Synthesis, characterization and in vitro interaction with human endothelial cells.
Flebus, Luca; Lombart, François; Sevrin, Chantal et al.
2015In International Journal of Pharmaceutics, 478 (1), p. 278-287
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Keywords :
Biomedical applications; Cell trafficking; Functional polymers; Poly(2-dimethylamino-ethylmethacrylate); Polycations
Abstract :
[en] Poly (2-dimethylamino ethylmethacrylate) (PDMAEMA) is an attractive non-degradable polymer studied as nonviral vector for gene delivery but it can be also adopted for delivery of other biopharmaceutical drugs. As a parenteral carrier, the PDMAEMA free form (FF) might interact with tissues and cells. Few data are available on its selective internalization and efflux from cells, while the majority of studies published have followed the distribution of DNA complexed with PDMAEMA. In order to address polycation safety, the first aim was to synthesize by atom transfer radical polymerisation (ATRP) fluorescent labeled PDMAEMA of low molecular weight (Mw) (below 15kDa), controlling the position and density of fluorescein. The second goal was to analyze the possible difference in uptake and subcellular distribution of this labeled FF polycation between human umbilical vein endothelial cells (HUVEC) and hCMEC/D3 cells. These two cell lines have been chosen in order to detect selectivity towards the blood-brain barrier (BBB). In both cases, polycation was detected along the plasma membrane followed by progressive migration to the peri-nuclear region, where it overlapped with lysosomal structures. The analysis by fluorescence-activated cell sorting (FACS) of the PDMAEMA uptake by hCMEC/D3 cells showed a significant (p<0.05) inhibition (40%) in presence of 2-dexoxy-d-glucose inhibitor, a result supporting an energy-dependence mechanism(s). Cytotoxicity study showed that low Mw PDMAEMA (10kDa) lead to a minor cytotoxicity compared to the higher ones. As main conclusion this study highlights the similitude in cell trafficking of FF PDMAEMA and data previously reported for PDMAEMA/DNA complexes.
Disciplines :
Pharmacy, pharmacology & toxicology
Author, co-author :
Flebus, Luca ;  Université de Liège - ULiège > Centre interfacultaire des biomatériaux (CEIB)
Lombart, François ;  Université de Liège - ULiège > Centre interfacultaire des biomatériaux (CEIB)
Sevrin, Chantal ;  Université de Liège - ULiège > CEIB
Defraigne, Jean-Olivier ;  Université de Liège - ULiège > Département des sciences cliniques > Chirurgie cardio-vasculaire et thoracique
Peters, Pierre ;  Université de Liège - ULiège > Département des sciences cliniques > Département des sciences cliniques
Parhamifar, Ladan
Molin, Daniel G. M.
Grandfils, Christian ;  Université de Liège - ULiège > Département des sciences biomédicales et précliniques > Biochimie et physiologie générales, et biochimie humaine
Language :
English
Title :
Low molecular weight poly (2-dimethylamino ethylmethacrylate) polymers with controlled positioned fluorescent labeling: Synthesis, characterization and in vitro interaction with human endothelial cells.
Publication date :
15 January 2015
Journal title :
International Journal of Pharmaceutics
ISSN :
0378-5173
eISSN :
1873-3476
Publisher :
Elsevier, Netherlands
Volume :
478
Issue :
1
Pages :
278-287
Peer reviewed :
Peer Reviewed verified by ORBi
Commentary :
Copyright (c) 2014 Elsevier B.V. All rights reserved.
Available on ORBi :
since 16 December 2014

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