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Polyamidoamine dendrimer liposome-mediated survivin antisense oligonucleotide inhibits hepatic cancer cell proliferation by inducing apoptosis. | LitMetric
Polyamidoamine dendrimer (PAMAM) is a new nanometer material, which can transfer the target genes to cells with high efficiency and lower toxicity. This study aims to evaluate antitumor effects of survivin antisense oligonucleotide (survivin-asODN) (carried by polyamidoamine dendrimer liposome) on hepatic cancer in nude mice. Hepatic cancer model was established by injecting SMMC-7721 cells subcutaneously into flanks of nude mice. Polyamidoamine dendrimer and liposome were mixed with survivin-asODN, respectively. The shape and size of complex were observed by transmission electron microscope, and zeta potential was measured by an analytical tool. Encapsulation efficiency and DNA loading level were determined by an ultraviolet spectrophotometer in centrifuging method. Expression of survivin in transplant tumor was measured by Western blotting. No significant difference appeared for diameter and envelopment ratio between PAMAM liposome-survivin-asODN and PAMAM-survivin-asODN (P > 0.05). Both zeta potential and transfection efficiency in PAMAM liposome-survivin-asODN were higher than that in PAMAM-survivin-asODN complex (P < 0.05). Expression of survivin protein and weight of tumors in transplanted tumors in PAMAM liposome-survivin-asODN group was less than that in PAMAM-survivin-asODN group (P < 0.05). Cell apoptosis rate in PAMAM liposome-survivin-asODN group was higher than that of PAMAM-survivin-asODN group (P < 0.05). In conclusion, polyamidoamine dendrimer liposome can deliver survivin-asODN into hepatic transplanted tumor cells effectively. Ployamidoamine dendrimer liposome-mediated survivin-asODN can inhibit hepatic cell proliferation by inducing apoptosis.
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