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    • 7. 发明申请
    • IMPROVED METHODS CONTROLLING GENE EXPRESSION
    • 改进的基因表达控制方法
    • WO2006111512A1
    • 2006-10-26
    • PCT/EP2006/061604
    • 2006-04-13
    • BASF PLANT SCIENCE GMBHREN, PeifengSONG, Hee-SookMCMILLAN, John
    • REN, PeifengSONG, Hee-SookMCMILLAN, John
    • C12N15/82C12N15/85C12N15/79A01H5/00
    • C12N15/8218C12N15/79C12N15/8216
    • The present invention is in the field of genetics, especially plant genetics, and provides agents capable of controlling gene expression. The present invention specifically pro vides sequences of naturally occurring, tissue-specifically expressed microRNAs. The invention further provides for transgenic expression constructs comprising sequences encoding said microRNAs. By incorporation of the microRNA encoding sequence the expression from said expression construct is specifically silenced in the tissue where the naturally occurring microRNA is naturally expressed. Thereby the expression profile resulting from the promoter is modulated and leakiness is reduced. The invention fur ther provides for a method for modulating transgenic expression by incorporating se quences encoding said microRNAs into transgenic expression constructs. The compositions and methods of the invention can be used to enhance performance of agricul tural relevant crops and for therapy, prophylaxis, research and diagnostics in diseases and disorders, which afflict mammalian species.
    • 本发明涉及遗传学,特别是植物遗传学领域,并提供能够控制基因表达的试剂。 本发明特别提供天然存在的组织特异性表达的微小RNA的序列。 本发明还提供包含编码所述微小RNA的序列的转基因表达构建体。 通过并入microRNA编码序列,所述表达构建体的表达在天然存在的微RNA天然表达的组织中被特异性沉默。 因此,由启动子产生的表达谱被调节并且泄漏降低。 本发明还提供了通过将编码所述微小RNA的序列并入转基因表达构建体来调节转基因表达的方法。 本发明的组合物和方法可用于增强农业相关作物的性能,以及用于治疗,预防,研究和诊断哺乳动物物种的疾病和病症。