期刊
DRUG DELIVERY
卷 16, 期 7, 页码 357-362出版社
TAYLOR & FRANCIS LTD
DOI: 10.1080/10717540903059549
关键词
Target gene delivery; polyethyleneimine; hyaluronic acid; ternary complexes; breast cancer
In the present study, The PEI/DNA (PD) complexes was first prepared with positive surface charge under a suitable N/P ratio of 10. The redundant positive charge was partially and excessively shielded by a polysaccharide, hyaluronic acid (HA), in aqueous solution. The HA/PEI/DNA ternary complexes were characterized by assessing the zeta potential and size, then transferred to MDA-MB-435, MDA-MB-231, and MCF-7 cell lines with different amounts of HA-specific CD44 receptors on the surface. Consequently, The transfection efficiency of all the prepared complexes show a little increased to MCF-7 (low CD44 level) while a large increased to MDA-MB-231 and MDA-MB-435 cells (high CD44 level) with adding HA. Also, when HA:PEI charge ratio was 7.5%, the ternary complexes show the highest transfection efficiency. The prepared ternary complexes exhibited increased 2-13-fold fluorescence intensity and lower cell toxicity compared to the PD (N/P, 10). These results indicated that the positive HA/PEI/DNA ternary complexes (HA:PEI charge ratio, 7.5%) can target malignant breast cancer cells with high CD44 level and might be a promising candidate vector for gene therapy.
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