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    • 21. 发明授权
    • Transgenic organisms having tetracycline-regulated transcriptional regulatory systems
    • 具有四环素调节转录调控系统的转基因生物
    • US06252136B1
    • 2001-06-26
    • US09163269
    • 1998-09-29
    • Hermann BujardManfred GossenJochen G. SalfeldJeffrey W. Voss
    • Hermann BujardManfred GossenJochen G. SalfeldJeffrey W. Voss
    • C12N1509
    • C12N15/62A01K67/0275A01K2217/05A01K2217/075C07K2319/09C07K2319/61C07K2319/71C07K2319/80C12N15/635C12N15/85C12N2830/006
    • Transgenic animals carrying two transgenes, the first coding for a transactivator fusion protein comprising a tet repressor and a polypeptide which directly or indirectly activates in eucaryotic cells, and the second comprising a gene operably linked to a minimal promoter operably linked to at least one tet operator sequence, are disclosed. Isolated DNA molecules (e.g., targeting vectors) for integrating a polynucleotide sequence encoding a transactivator of the invention at a predetermined location within a second target DNA molecule by homologous recombination are also disclosed. Transgenic animals having the DNA molecules of the invention integrated at a predetermined location in a chromosome by homologous recombination are also encompassed by the invention. Methods to regulate the expression of a tet operator linked-gene of interest by administering tetracycline or a tetracycline analogue to an animal of the invention are also disclosed. The regulatory system of the invention allows for conditional inactivation or modulation of expression of a gene of interest in a host cell or animal.
    • 携带两个转基因的转基因动物,第一编码包含直接或间接在真核细胞中活化的tet阻遏物和多肽的反式激活因子融合蛋白,第二编码包含与可操作地连接至少一个tet操纵子的最小启动子可操作地连接的基因 序列。 还公开了通过同源重组将编码本发明的反式激活物的多核苷酸序列整合到第二靶DNA分子内的预定位置的分离的DNA分子(例如靶向载体)。 通过同源重组将具有整合在染色体中预定位置的本发明的DNA分子的转基因动物也包括在本发明中。 还公开了通过向本发明的动物施用四环素或四环素类似物来调节所述目的基因的表达的方法。 本发明的调节系统允许在宿主细胞或动物中有条件地失活或调控感兴趣的基因的表达。
    • 23. 发明授权
    • Methods for regulating gene expression
    • 调节基因表达的方法
    • US5814618A
    • 1998-09-29
    • US485978
    • 1995-06-07
    • Hermann BujardManfred Gossen
    • Hermann BujardManfred Gossen
    • A01K67/027A61K48/00C07K14/00C07K14/035C07K14/195C07K14/245C07K19/00C12N15/11C12N15/63C12N15/67C12N15/85C12N15/00
    • C07K14/005A01K67/0275C07K14/245C12N15/62C12N15/63C12N15/635C12N15/67C12N15/85C12N15/8509A01K2217/05A01K2217/075A01K2217/20A01K2227/105A01K2267/0393A61K48/00C07K2319/00C07K2319/09C07K2319/61C07K2319/71C07K2319/80C12N2710/16622C12N2830/003C12N2830/006C12N2830/32
    • Methods of regulating gene expression in subjects using tetracycline-responsive fusion proteins are disclosed. In one embodiment, the method involves introducing into a cell the subject a nucleic acid molecule encoding a fusion protein which inhibits transcription, the fusion protein comprising a first polypeptide which binds to a tet operator sequence, operatively linked to a heterologous second polypeptide which inhibits transcription in eukaryotic cells; and modulating the concentration of a tetracycline, or analogue thereof, in the subject. The first polypeptide can binds to a tet operator sequence in the absence, but not the presence, of tetracycline. Alternatively, the first polypeptide can binds to a tet operator sequence in the presence, but not the absence, of tetracycline. In another embodiment, the method of the invention involves obtaining a cell from a subject, introducing into the cell a first nucleic acid molecule which operatively links a gene to at least one tet operator sequence, introducing into the cell a second nucleic acid molecule encoding an inhibitory fusion protein of the invention to form a modified cell, administering the modified cell to the subject and modulating the concentration of a tetracycline, or analogue thereof, in the subject. The first and second nucleic acid molecules can be linked or can be separate molecules.
    • 公开了使用四环素响应融合蛋白调节受试者基因表达的方法。 在一个实施方案中,该方法包括向受试者引入编码抑制转录的融合蛋白的核酸分子,该融合蛋白包含与tet操纵子序列结合的第一多肽,该第一多肽与抑制转录的异源第二多肽有效连接 在真核细胞中 并调节受试者中四环素或其类似物的浓度。 在不存在但不存在四环素的情况下,第一种多肽可以结合tet操纵子序列。 或者,第一多肽可以在四环素存在下但不存在时与tet操纵子序列结合。 在另一个实施方案中,本发明的方法涉及从受试者获得细胞,将在第一核酸分子中引入至少一个tet操纵子序列的第一核酸分子,将编码 本发明的抑制性融合蛋白以形成修饰的细胞,向受试者施用修饰的细胞并调节受试者中四环素或其类似物的浓度。 第一和第二核酸分子可以连接或可以是分开的分子。
    • 27. 发明授权
    • Tetracycline-regulated transcriptional activator fusion proteins
    • 四环素调节的转录激活融合蛋白
    • US06914124B2
    • 2005-07-05
    • US09777317
    • 2001-02-05
    • Hermann BujardManfred Gossen
    • Hermann BujardManfred Gossen
    • A01K67/027A61K48/00C07K14/00C12N5/08C12N5/10C12N15/00C12N15/09C12N15/31C12N15/62C12N15/63C12N15/85C12R1/91
    • A01K67/0275A01K2217/05A01K2217/075C07K2319/09C07K2319/61C07K2319/71C07K2319/80C12N15/62C12N15/635C12N15/85C12N2830/006
    • A method for regulating expression of a tet operator-linked gene in a cell of a subject is disclosed. In one embodiment, the method involves introducing into the cell a nucleic acid molecule encoding a tetracycline-controllable transactivator (tTA), the tTA comprising a Tet repressor operably linked to a polypeptide which directly or indirectly activates transcription in eucaryotic cells; and modulating the concentration of a tetracycline, or analogue thereof, in the subject. Alternatively, in another embodiment, the method involves obtaining the cell from the subject, introducing into the cell a first nucleic acid molecule which operatively links a gene to at least one tet operator sequence, introducing into the cell a second nucleic acid molecule encoding a tTA, to form a modified cell, administering the modified cell to the subject, and modulating the concentration of a tetracycline, or analogue thereof, in the subject. The first and second nucleic acid molecule can be within a single molecule (e.g., in the same vector) or on separate molecules.
    • 公开了一种用于调节受试者细胞中tet操纵子连接基因表达的方法。 在一个实施方案中,所述方法包括将编码四环素可控反式激活因子(tTA)的核酸分子引入细胞,所述tTA包含可操作地连接到直接或间接激活真核细胞中的转录的多肽的Tet阻遏物; 并调节受试者中四环素或其类似物的浓度。 或者,在另一个实施方案中,所述方法包括从受试者获得细胞,向细胞中引入第一核酸分子,该第一核酸分子可操作地将基因连接至至少一个tet操纵子序列,将编码tTA的第二核酸分子 ,以形成修饰的细胞,向受试者施用修饰的细胞,并调节受试者中四环素或其类似物的浓度。 第一和第二核酸分子可以在单分子内(例如,在同一载体中)或分开的分子上。