Ultrasound-enhanced gene delivery to alfalfa cells by hPAMAM dendrimer nanoparticles

Turkish Journal of Biology = Türk Biyoloji Dergisi
Amin AmaniRasool Asghari-Zakaria

Abstract

Cationic polyamidoamine (PAMAM) dendrimers are highly branched nanoparticles with unique molecular properties, which make them promising nanocarriers for gene delivery into cells. This research evaluated the ability of hyperbranched PAMAM (hPAMAM)-G2 with a diethylenetriamine core to interact with DNA, its protection from ultrasonic damage, and delivery to alfalfa cells. Additionally, the effects of ultrasound on the efficacy of hPAMAM-G2 for the delivery and expression of the gus A gene in the alfalfa cells were investigated. The electrophoresis retardation of plasmid DNA occurred at an N/P ratio (where N is the number of hPAMAM nitrogen atoms and P is the number of DNA phosphorus atoms) of 3 and above, and hPAMAM-G2 dendrimers completely immobilized the DNA at an N/P ratio of 4. The analysis of the DNA dissociated from the dendriplexes revealed a partial protection of the DNA from ultrasound damage at N/P ratios lower than 2, and with increasing N/P ratios, the DNA was better protected. Sonication of the alfalfa cells in the presence of ssDNA-FITC-hPAMAM increased the ssDNA delivery efficiency to 36%, which was significantly higher than that of ssDNA-FITC-hPAMAM without sonication. Additionally, the efficiency of transfection...Continue Reading

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Citations

Mar 7, 2020·Frontiers in Bioengineering and Biotechnology·Pablo Vega-VásquezJoseph Irudayaraj
Dec 2, 2020·Materials Science & Engineering. C, Materials for Biological Applications·Amin AmaniMahdi Nohtani

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