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    • 83. 发明授权
    • Methods and compositions for regulation of CD28 expression
    • 调节CD28表达的方法和组成
    • US5932556A
    • 1999-08-03
    • US529878
    • 1995-09-18
    • Robert C Tam
    • Robert C Tam
    • A61K38/00A61K48/00C12N15/113C12N15/11
    • C12N15/1138A61K38/00A61K48/00C12N2310/15C12N2310/151C12N2310/18C12N2310/315
    • Methods and compositions are provided for the treatment of immune system-mediated diseases. The compositions of the invention have the property of reducing the expression of CD28 in cells of interest so as to moderate the pathogenic effects on the immune system in an immune system-mediated disease. The compositions of the invention include one or more different oligomers capable of reducing the expression of CD28. One aspect of the invention provides oligomers capable of reducing the expression of CD28 by interfering with its expression. The oligomers may be DNA, RNA, or various analogs thereof, and may include 14-50 base phosphorothioates having at least two sequences of GGGG separated by 3 to 5 bases. Other aspects of the invention provide genetic engineering vectors for the intracellular expression of oligomers of the invention in cells of interest, and formulations comprising one or more different oligomers of the invention. The formulations may be adapted for various forms of administration to the body or administration to cells to be reintroduced into the body. The methods of the invention involve modulating CD28 expression through the use of the oligomers of the invention. The methods may be used to treat immune system-mediated diseases and include methods of treating autoimmune disease, methods of reducing an inflammation response, methods of reducing the production of selected cytokines, methods of inactivating T cells, and methods of immunosuppressing a transplant patient.
    • 提供了用于治疗免疫系统介导的疾病的方法和组合物。 本发明的组合物具有降低感兴趣细胞中CD28表达的性质,以便缓解免疫系统介导的疾病对免疫系统的致病作用。 本发明的组合物包括能够降低CD28表达的一种或多种不同的低聚物。 本发明的一个方面提供能够通过干扰其表达来降低CD28表达的寡聚体。 低聚物可以是DNA,RNA或其各种类似物,并且可以包括具有至少两个分开3至5个碱基的GGGG序列的14-50个硫代磷酸酯。 本发明的其它方面为感兴趣的细胞中本发明的寡聚体的细胞内表达提供了遗传工程载体,以及包含一种或多种本发明的不同寡聚体的制剂。 制剂可以适用于各种给予身体的形式或施用于待再次引入体内的细胞。 本发明的方法涉及通过使用本发明的寡聚体调节CD28表达。 所述方法可用于治疗免疫系统介导的疾病,并且包括治疗自身免疫性疾病的方法,减少炎症反应的方法,减少所选细胞因子产生的方法,灭活T细胞的方法以及免疫抑制移植患者的方法。