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    • 61. 发明申请
    • IMPROVED TRANSFORMATION METHOD FOR PLANTS
    • 改进植物转化方法
    • WO98037212A1
    • 1998-08-27
    • PCT/IB1998/000220
    • 1998-02-20
    • C12N15/09A01H1/00C12N5/04C12N5/10C12N15/29C12N15/82C12N15/84
    • C12N15/8201C12N15/8205
    • A process for integrating a DNA fragment into the genome of a cell of a monocotyledonous plant, the process comprising the steps of: 1) incubating, prior to contacting with the DNA fragment, a culture of untransformed monocotyledonous plant cells on a medium comprising a plant phenolic compound, for a period of time sufficient to stimulate cell division and enhance competence for integration of foreign DNA; and 2) contacting the untransformed cells with the DNA fragment under conditions in which the DNA fragment is taken up by the untransformed cells and is stably integrated in the genome of the untransformed cells, to generate transformed cells.
    • 将DNA片段整合到单子叶植物细胞的基因组中的方法,该方法包括以下步骤:1)在与DNA片段接触之前,在包含植物的培养基上孵育未转化的单子叶植物细胞的培养物 酚类化合物,足以刺激细胞分裂并增强外源DNA整合能力的时间; 和2)在DNA片段被未转化细胞吸收的条件下将未转化的细胞与DNA片段接触并稳定地整合到未转化的细胞的基因组中,以产生转化的细胞。
    • 64. 发明申请
    • RNA PACKAGING SYSTEM
    • RNA包装系统
    • WO1994010329A1
    • 1994-05-11
    • PCT/US1993010396
    • 1993-10-28
    • RUTGERS UNIVERSITY
    • RUTGERS UNIVERSITYWILSON, Thomas, M., A.HWANG-LEE, Duk-Ju
    • C12P19/34
    • C07K14/005C12N7/00C12N15/10C12N15/8201C12N15/8206C12N2770/00022Y10S435/81
    • The present invention relates to an in vivo system for expression and packaging of recombinant RNA into pseudovirus particles. The invention is based on the discovery that plant viral coat proteins (CPs) may be efficiently expressed in E. coli, and that these recombinant coat proteins will function to assemble in vivo and package recombinant chimeric RNA, containing an operatively linked origin-of-assembly (OAS) sequence, to form mature viral particles containing a foreign RNA. The present invention thus provides for packaging of RNA into a ribonuclease-resistant form that is easily purified and stored, and which overcomes the prior art problems associated with degradation of RNA by ribonucleases. Significantly, the method of the invention is RNA sequence- and length-independent. The components of the invention include a source in the bacterial host of viral coat proteins, and a source in the bacterial host to direct the transcription of a DNA molecule comprising an OAS-encoding DNA and a foreign DNA, which DNA molecule can be transcribed in the host cell to produce an RNA molecule comprising an OAS operatively linked to an RNA of interest. The CPs and OAS are from a plant virus having a rod-shaped helical particle and a single-stranded RNA genome, most preferably tobacco mosaic virus.
    • 本发明涉及用于将重组RNA表达和包装成假病毒颗粒的体内系统。 本发明基于以下发现:可以在大肠杆菌中有效表达植物病毒外壳蛋白(CP),并且这些重组外壳蛋白将用于在体内组装并包装重组嵌合RNA,所述重组嵌合RNA含有可操作地连接的起始蛋白 组装(OAS)序列,以形成含有外源RNA的成熟病毒颗粒。 因此,本发明提供将RNA包装到易于纯化和储存的核糖核酸酶抗性形式中,并克服了与核糖核酸酶降解RNA相关的现有技术问题。 显着地,本发明的方法是RNA序列和长度无关的。 本发明的组分包括病毒外壳蛋白的细菌宿主中的源,以及细菌宿主中用于引导包含编码OAS的DNA和外来DNA的DNA分子的转录的来源,该DNA分子可被转录在 宿主细胞以产生包含可操作地连接到目的RNA的OAS的RNA分子。 CP和OAS来自具有棒状螺旋颗粒和单链RNA基因组的植物病毒,最优选烟草花叶病毒。
    • 66. 发明申请
    • METHODS OF EMBRYOGENIC TISSUE PREPARATION FOR SUGAR CANE TRANSFORMATION
    • 用于蔗糖转化的胚芽组织制备方法
    • WO2016094029A1
    • 2016-06-16
    • PCT/US2015/060535
    • 2015-11-13
    • SYNGENTA PARTICIPATIONS AGSYNGENTA CROP PROTECTION LLC
    • MAI, PearlDUNDER, Erik
    • C12N15/82
    • C12N5/04C12N15/8201C12N15/8205
    • Methods of tissue preparation for the transformation of sugar cane are provided. The methods comprise a pre-culture treatment of sugar cane embryogenic tissue prior to transformation. The methods comprise excising a segment of plant tissue from a shoot of sugar cane; culturing said segment to produce sugar cane embryogenic tissues; performing a pre-culturing treatment by sub-culturing responding embryogenic tissue on fresh media for a period of time of at least 7 days, in the same media; and with no intervening step and no changes of media, performing transformation of embryogenic tissue. Transformation can be performed via Agrobacterium-mediated gene delivery, biolistic transformation, and the like. Transgenic plants are regenerated from plantlets grown under conditions favoring growth of transformed cells while substantially inhibiting growth of non-transformed cells.
    • 提供了甘蔗转化的组织制备方法。 所述方法包括在转化之前对甘蔗胚发生组织的预培养处理。 该方法包括从甘蔗芽切除一段植物组织; 培养所述片段以产生甘蔗胚发生组织; 通过在相同的培养基中将新鲜培养基上的反应性胚发生组织分别培养至少7天的时间进行预培养处理; 并没有介入步骤,也没有介质的变化,进行胚胎发生组织的转化。 转化可以通过农杆菌介导的基因递送,生物弹性转化等进行。 转基因植物从有利于转化细胞生长的条件下生长的小植株再生,同时基本上抑制未转化细胞的生长。