Arginine-conjugated polypropylenimine dendrimer as a non-toxic and efficient gene delivery carrier.

Abstract:

:We synthesized arginine-conjugated polypropylenimine dendrimer G2 (DAB-8), PPI2-R for gene delivery systems. Synthesized PPI2-R could retard plasmid DNA at a weight ratio of 4 completely and PPI2-R polyplexes showed a fluorescence of less than 10% over a charge ratio of 2 by PicoGreen reagent assay, suggesting its good DNA condensing ability. The size of PPI2-R polyplex was measured to about 200nm at a charge ratio of 150. PPI2-R displayed 80-90% cell viability at even a 150microg/mL concentration. Transfection efficiency of PPI2-R was found to be high comparable to that of PEI25kD and to be 8-214 times higher than that of unmodified PPI2 on HeLa and 293 cells. Moreover, PPI2-R showed 4 times higher transfection efficiency than PEI25kD, treating with 10microg pDNA because of its low cytotoxicity on HeLa cells. Finally, PPI2-R showed a transfection efficiency 2-3 times higher than PEI25kD on HUVECs, showing its potency as a gene delivery carrier for primary cells. These results demonstrate that arginine-conjugation of PPI2 is successful in developing a low toxic and highly transfection efficient gene delivery carrier.

journal_name

Biomaterials

journal_title

Biomaterials

authors

Kim TI,Baek JU,Zhe Bai C,Park JS

doi

10.1016/j.biomaterials.2006.12.013

subject

Has Abstract

pub_date

2007-04-01 00:00:00

pages

2061-7

issue

11

eissn

0142-9612

issn

1878-5905

pii

S0142-9612(06)01033-7

journal_volume

28

pub_type

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