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    Please use this identifier to cite or link to this item: http://ir.cnu.edu.tw/handle/310902800/27592


    標題: Synthesis and Characterization of Cationic Glycidyl-Based Poly(aminoester)-Folic Acid Targeting Conjugates and Study on Gene Delivery
    作者: Tsai, Pai Feng
    Chang, Wei Yang
    Hsiao, Yu Che
    Li, Kuo Jung
    Da Shau, Min
    貢獻者: 職業安全衛生系
    生物科技系
    關鍵字: Poly(Aminoester)
    Folic Acid
    Transfection
    Cytotoxicity
    日期: 2012-08
    上傳時間: 2014-03-21 16:14:35 (UTC+8)
    出版者: Mdpi Ag
    摘要: A new poly(aminoester) (EPAE-FA) containing folic acid and amino groups in the backbone and side chain was synthesized. EPAE-FA self-assembled readily with the plasmid DNA (pCMV-beta gal) in HEPES buffer and was characterized by dynamic light scattering, zeta potential, fluorescence images, and XTT cell viability assays. To evaluate the transfection effect of graft ratio of FA on the EPAE system, EPAE-FA polymers with two different graft ratios (EPAE-FA12k and EPAE-FA14k) were also prepared. This study found that all EPAE-FA polymers were able to bind plasmid DNA and yielded positively charged complexes with nano-sized particles (<200 nm). To assess the transfection efficiency mediated by EPAE and EPAE-FA polymers, we performed in vitro transfection activity assays using FR-negative (COS-7) and FR-positive (HeLa) cells. The EPAE-FA12k/DNA and EPAE-FA14k/DNA complexes were able to transfect HeLa cell in vitro with higher transfection efficiency than PEI25k/DNA at the similar weight ratio. These results demonstrated that the introduction of FA into EPAE system had a significant effect on transferring ability for FR-positive cells (HeLa). Examination of the cytotoxicity of PEI25k and EPAE-FA system revealed that EPAE-FA system had lower cytotoxicity. In this paper, EPAE-FA seemed to be a novel cationic poly(aminoester) for gene delivery and an interesting candidate for further study.
    Appears in Collections:[職業安全衛生系(含防災所)] 期刊論文
    [生物科技系(所)] 期刊論文

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