Avirulent microbes and uses therefor: Salmonella typhi
    4.
    发明授权
    Avirulent microbes and uses therefor: Salmonella typhi 失效
    无毒性微生物及其用途:伤寒沙门氏菌

    公开(公告)号:US5387744A

    公开(公告)日:1995-02-07

    申请号:US88394

    申请日:1993-07-07

    摘要: This invention provides immunogenic compositions for the immunization of a vertebrate or invertebrate comprising an avirulent derivative of S. typhi. The derivatives having a mutation of the cya and/or crp and/or cdt genes. The invention also provides immunogenic compositions for the immunization of a vertebrate and invertebrate comprising an avirulent derivative of the above type which is capable of expressing a recombinant gene derived from a pathogen of said vertebrate or invertebrate individual to produce an antigen capable of inducing an immune response against said pathogen. Other embodiments of the invention include methods of preparing immunogenic compositions from these strains, and strains useful in the preparation of the immunogenic compositions, as well as methods of stimulating the immune system to respond to an immunogenic antigen of S. typhi by administration of the immunogenic composition.

    摘要翻译: 本发明提供了用于免疫含脊椎动物或无脊椎动物的免疫原性组合物,其包含伤寒沙利氏菌的无毒性衍生物。 具有cya和/或crp和/或cdt基因突变的衍生物。 本发明还提供用于免疫脊椎动物和无脊椎动物的免疫原性组合物,其包含上述类型的无毒力衍生物,其能够表达源自所述脊椎动物或无脊椎动物个体的病原体的重组基因以产生能够诱导免疫应答的抗原 针对所述病原体。 本发明的其它实施方案包括从这些菌株制备免疫原性组合物的方法,以及可用于制备免疫原性组合物的菌株,以及通过施用免疫原性刺激免疫系统对伤寒沙门氏菌的免疫原性抗原作出反应的方法 组成。

    RECOMBINANT BACTERIA COMPRISING VECTORS FOR EXPRESSION OF NUCLEIC ACID SEQUENCES ENCODING ANTIGENS
    6.
    发明申请
    RECOMBINANT BACTERIA COMPRISING VECTORS FOR EXPRESSION OF NUCLEIC ACID SEQUENCES ENCODING ANTIGENS 审中-公开
    包含用于表达编码抗原的核酸序列的载体的重组细菌

    公开(公告)号:US20100317084A1

    公开(公告)日:2010-12-16

    申请号:US12599655

    申请日:2008-05-09

    申请人: Roy Curtiss, III

    发明人: Roy Curtiss, III

    IPC分类号: C12N1/21

    摘要: The invention encompasses a recombinant bacterium that comprises at least one vector capable of expressing a nucleic acid sequence encoding an antigen. In particular, the bacterium comprises at least one chromosomally encoded essential nucleic acid that is altered so that it is not expressed, and at least one extrachromosomal vector.

    摘要翻译: 本发明包括重组细菌,其包含至少一种能够表达编码抗原的核酸序列的载体。 特别地,细菌包含至少一种经过改变以使其不被表达的染色体编码的必需核酸和至少一种染色体外载体。

    Selective maintenance of a recombinant gene in a population of vaccine
cells
    7.
    发明授权
    Selective maintenance of a recombinant gene in a population of vaccine cells 失效
    在疫苗细胞群中选择性维持重组基因

    公开(公告)号:US5672345A

    公开(公告)日:1997-09-30

    申请号:US402308

    申请日:1995-03-10

    申请人: Roy Curtiss, III

    发明人: Roy Curtiss, III

    摘要: The invention encompasses methods of maintaining desired recombinant genes in a genetic population of cells expressing the recombinant gene. The methods utilize mutant cells which are characterized by a lack of a functioning native gene encoding an enzyme which is essential for cell survival, wherein this enzyme catalyzes a step in the biosynthesis of an essential cell wall structural component and the presence of a first recombinant gene encoding an enzyme which is a functional replacement for the native enzyme, wherein the first recombinant gene cannot replace the defective chromosomal gene. The first recombinant gene is structurally linked to a second recombinant gene encoding a desired product. Loss of the first recombinant gene causes the cells to lyse when the cells are in an environment where a product due to the expression of the first recombinant gene is absent. The invention also encompasses methods of creating and isolating mutant cells with the above characteristics. The cells of the invention are useful for commercial production of desired products, for components of vaccines for immunizing individuals, and for release into the environment.

    摘要翻译: 本发明包括在表达重组基因的细胞的遗传群体中维持所需重组基因的方法。 该方法利用突变体细胞,其特征在于缺乏编码细胞存活所必需的酶的功能性天然基因,其中该酶催化必需细胞壁结构组分的生物合成和第一重组基因的存在 编码作为天然酶的功能性替代物的酶,其中第一重组基因不能代替有缺陷的染色体基因。 第一重组基因在结构上与编码所需产物的第二重组基因连接。 当细胞处于不存在第一重组基因表达的产物的环境中时,第一重组基因的损失导致细胞裂解。 本发明还包括产生和分离具有上述特征的突变细胞的方法。 本发明的细胞可用于商业生产所需产品,用于免疫个体的疫苗的组分和用于释放到环境中。

    Avirulent microbes and uses therefor
    9.
    发明授权
    Avirulent microbes and uses therefor 失效
    无毒微生物及其用途

    公开(公告)号:US5855880A

    公开(公告)日:1999-01-05

    申请号:US596732

    申请日:1996-02-05

    摘要: This invention provides immunogenic compositions for the immunization of a vertebrate or invertebrate comprising an avirulent derivative of S. typhi. The derivatives having a mutation of the cya and/or crp and/or cdt genes. The invention also provides immunogenic compositions for the immunization of a vertebrate and invertebrate comprising an avirulent derivative of the above type which is capable of expressing a recombinant gene derived from a pathogen of said vertebrate or invertebrate individual to produce an antigen capable of inducing an immune response against said pathogen. Other embodiments of the invention include methods of preparing immunogenic compositions from these strains, and strains useful in the preparation of the immunogenic compositions, as well as methods of stimulating the immune system to respond to an immunogenic antigen of S. typhi by administration of the immunogenic composition.

    摘要翻译: 本发明提供了用于免疫含脊椎动物或无脊椎动物的免疫原性组合物,其包含伤寒沙利氏菌的无毒性衍生物。 具有cya和/或crp和/或cdt基因突变的衍生物。 本发明还提供用于免疫脊椎动物和无脊椎动物的免疫原性组合物,其包含上述类型的无毒力衍生物,其能够表达源自所述脊椎动物或无脊椎动物个体的病原体的重组基因以产生能够诱导免疫应答的抗原 针对所述病原体。 本发明的其它实施方案包括从这些菌株制备免疫原性组合物的方法,以及可用于制备免疫原性组合物的菌株,以及通过施用免疫原性刺激免疫系统对伤寒沙门氏菌的免疫原性抗原作出反应的方法 组成。

    Method of maintaining a desired recombinant gene in a genetic population
of cells
    10.
    发明授权
    Method of maintaining a desired recombinant gene in a genetic population of cells 失效
    在细胞遗传群体中维持所需重组基因的方法

    公开(公告)号:US5840483A

    公开(公告)日:1998-11-24

    申请号:US473926

    申请日:1995-06-07

    申请人: Roy Curtiss, III

    发明人: Roy Curtiss, III

    摘要: The invention encompasses methods of maintaining desired recombinant genes in a genetic population of cells expressing the recombinant gene. The methods utilize mutant cells which are characterized by a lack of a functioning native gene encoding an enzyme which is essential for cell survival, wherein this enzyme catalyzes a step in the biosynthesis of an essential cell wall structural component and the presence of a first recombinant gene encoding an enzyme which is a functional replacement for the native enzyme, wherein the first recombinant gene cannot replace the defective chromosomal gene. The first recombinant gene is structurally linked to a second recombinant gene encoding a desired product. Loss of the first recombinant gene causes the cells to lyse when the cells are in an environment where a product due to the expression of the first recombinant gene is absent. The invention also encompasses methods of creating and isolating mutant cells with the above characteristics. The cells of the invention are useful for commercial production of desired products, for components of vaccines for immunizing individuals, and for release into the environment.

    摘要翻译: 本发明包括在表达重组基因的细胞的遗传群体中维持所需重组基因的方法。 该方法利用突变体细胞,其特征在于缺乏编码细胞存活所必需的酶的功能性天然基因,其中该酶催化必需细胞壁结构组分的生物合成和第一重组基因的存在 编码作为天然酶的功能性替代物的酶,其中第一重组基因不能代替有缺陷的染色体基因。 第一重组基因在结构上与编码所需产物的第二重组基因连接。 当细胞处于不存在第一重组基因表达的产物的环境中时,第一重组基因的损失导致细胞裂解。 本发明还包括产生和分离具有上述特征的突变细胞的方法。 本发明的细胞可用于商业生产所需产品,用于免疫个体的疫苗的组分和用于释放到环境中。