ROLLING CIRCLE REPLICON EXPRESSION VECTORS
    3.
    发明申请
    ROLLING CIRCLE REPLICON EXPRESSION VECTORS 审中-公开
    滚动循环回复表达式向量

    公开(公告)号:WO0161024A3

    公开(公告)日:2002-06-27

    申请号:PCT/US0105394

    申请日:2001-02-15

    Abstract: A rolling circle DNA replicon which replicates in a host eukaryotic cell is disclosed which has a truncated replication cycle. The rolling circle DNA replicon comprises the following elements present on the same DNA molecule. It contains a Rep gene open reading frame from a virus belonging to the viral taxonomic families Geminiviridae, Circoviridae or genus Nanovirus . The Rep gene open reading frame is placed under transcriptional control of a promoter, which is placed 5' of the gene. Any sequences that are required to be present in cis on the rolling circle DNA replicon in order that the Rep protein might promote replication of the rolling circle DNA replicon are included. An expression cassette for expression of an ancillary protein that is capable of creating a cellular environment permissive for replication of the rolling circle DNA replicon in the host cell of interest is also included. At least one expression cassette with an RNA polymerase II promoter, a multiple cloning site, and transcription termination and polyadenylation signals suitable for transcription of RNA molecules not normally intrinsic to a geminiviral, circoviral or nanoviral genome is also included.

    Abstract translation: 公开了在宿主真核细胞中复制的旋环DNA复制子,其具有截短的复制周期。 滚环DNA复制子包含存在于相同DNA分子上的以下元素。 它包含来自属于病毒分类学家Geminiviridae,Circoviridae或属Nanovirus的病毒的Rep基因开放阅读框。 将Rep基因开放阅读框置于启动子的转录控制下,其位于基因的5'。 包括在循环DNA复制子上需要存在于顺式中的任何序列,以使Rep蛋白可能促进滚环DNA复制子的复制。 还包括用于表达能够产生在感兴趣的宿主细胞中允许循环DNA复制子复制的细胞环境的辅助蛋白质的表达盒。 还包括至少一个具有RNA聚合酶II启动子,多克隆位点和适合于双因素病毒,环状病毒或纳米病毒基因组通常不固有的RNA分子转录的转录终止和多聚腺苷酸化信号的表达盒。

    COMPOSITIONS AND METHODS FOR INHIBITING GENE EXPRESSION
    9.
    发明申请
    COMPOSITIONS AND METHODS FOR INHIBITING GENE EXPRESSION 审中-公开
    用于抑制基因表达的组合物和方法

    公开(公告)号:WO0177350A3

    公开(公告)日:2002-08-08

    申请号:PCT/US0111436

    申请日:2001-04-04

    CPC classification number: C12N15/79

    Abstract: The present invention provides an eukaryotic recombinant vector suited for bi-directional transcription of a transgene to yield both sense and antisense RNA transcripts of the transgene in an eukaryotic cell. The invention vectors are particularly suited for mediating gene silencing in a variety of biological systems. The present invention also provides host cells and transgenic plants comprising the invention vectors. Further provided by the invention are methods of inhibiting expression of an endogenous gene present in an eukaryotic cell. Also included is a method of identifying a biological function(s) of an endogenous gene of interest in an eukaryotic cell by selectively inhibiting the expression of the endogenous gene.

    Abstract translation: 本发明提供了适用于转基因双向转录的真核重组载体,以产生真核细胞中转基因的有义和反义RNA转录物。 本发明载体特别适用于介导各种生物系统中的基因沉默。 本发明还提供宿主细胞和包含本发明载体的转基因植物。 本发明进一步提供的是抑制存在于真核细胞中的内源基因表达的方法。 还包括通过选择性抑制内源基因的表达来鉴定真核细胞中感兴趣的内源基因的生物学功能的方法。

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