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    Please use this identifier to cite or link to this item: http://ir.cnu.edu.tw/handle/310902800/27623

    標題: The global gene-expression profiles of U-937 human macrophages treated with Tat peptide and Tat-FITC conjugate
    作者: Lin, Chia-Wei
    Kuo, Jung-hua Steven
    Jan, Ming-shiou
    貢獻者: 藥學系
    關鍵字: Cell Penetrating Peptides
    日期: 2012-07
    上傳時間: 2014-03-21 16:15:36 (UTC+8)
    出版者: Informa Healthcare
    摘要: There is increased interest in using cell penetrating peptides such as HIV Tat-derived peptide (Tat) to deliver biologically active cargo to cells. However, little is known about the precise molecular mechanism in cells after the uptake of Tat and after it conjugates with the cargo. Using high-density microarray analysis, we evaluated the alteration of whole genomic responses in U-937 macrophages that had been treated with Tat and Tat-fluorescein-5-isothiocynate (FITC), which served as model cargo, and then incubated for 24 h. Sixteen genes were upregulated and 28 downregulated in Tat-treated cells. After FITC had conjugated to Tat, 13 genes were upregulated and 23 downregulated. Ten upregulated and 13 downregulated genes were overlapped by both Tat and Tat-FITC. The molecular functions of regulated genes affected by Tat and Tat-FITC are described. A real-time quantitative reverse transcriptase-polymerase chain reaction was used to confirm three regulated genes (IFNAR2, CASP8, and CRLF1) affected by both Tat and Tat-FITC. We demonstrated that regulating the three genes was time-dependent and that CASP8 is also kinetically regulated in HeLa cells. Understanding the influences and consequences of Tat (Tat-cargo)-induced gene changes should help us design and develop efficient and safe delivery systems into target cells.
    關聯: Journal of Drug Targeting, 20(6), 515-523
    Appears in Collections:[藥學系(所)] 期刊論文

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