In-vitro cytotoxicity of Polyethyleneimine on HeLa and Vero Cells
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Date
2014
Journal Title
Journal ISSN
Volume Title
Type
Article
Publisher
International Journal of Innovation and Applied Studies
Series Info
International Journal of Innovation and Applied Studies;Vol. 5 No. 3 Mar. 2014, pp. 192-199
Doi
Scientific Journal Rankings
Abstract
The success of gene therapy depends on the choice of a suitable vector that is biocompatible and efficient in
delivering therapeutic DNA into disease cells. After more than two decades, such an ideal vector is still a wish. Viral vectors
though naturally evolved to transfect cells are immunogenic. As alternatives, non-viral vectors such as polyethyleneimine
have been exploited. We decided to investigate the in-vitro cytotoxicity of branched polyethyleneimine 800D, 25kD and
linear 20kD on HeLa and Vero cells. At exponential phase, cells were exposed to polymers at concentration range of 0.5 to
1000mg/ml. Cells were MTT assayed after 24, 48 and 72hours for viability (IC50). Linear PEI was less toxic than the branched
PEI in both cells. The IC50 (mg/ml) values (Mean±SEM, n=6) post 72hours of PEI800D, 25kD and PEI20kD on HeLa cells were
2.42±0.22, 2.92±0.59, and 3.03±0.11 and for Vero cells, 7.42±0.29, 7.26±0.12, and 6.89±0.53 respectively. Two tailed t-test
(P<0.05) of each polymer on both cells 72hours post dosing gave a significant P value of <0.0001. The results indicate that
branched PEI800D, PEI25kD and linear PEI20kD are differently apoptotic to HeLa and Vero cells. The toxicity also time, cell
line and concentration dependent. More research aimed at improving biocompatibility and transfection efficiency is needed.
Description
MSA Google Scholar
Keywords
HeLa, Vero, Polyethyleneimine, Poly L-lysine, Cytotoxicity, Dextran
Citation
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