Abstract:
A method of expressing a foreign gene in cells of a mammalian organ in vivo includes the step of injecting genetic material capable of inducing desired gene products into a mammal. The genetic material is complexed to cationic liposome carriers. The genetic material is lipofected into cells of the mammalian organ. Gene expression and cellular function of the genetic material are activated to produce the desired foreign products in the cells of the organ.
Abstract:
HIV virus mutants having an alteration which inhibits induction of enhancing antibody to said virus are described. Also described are HIV virus mutants in which an antibody-dependent enhancing domain in gp41 includes amino acid alterations. Also described are HIV vaccines comprising HIV gp160 mutants in which an antibody-dependent enhancing domain in gp41 includes at least one amino acid alteration.
Abstract:
The present invention relates to a member of a novel gene family referred to as developmentally-regulated endothelial cell locus-1(del-1). In particular, the invention relates to del-1 nucleotidesequences, Del-1 amino acid sequences, methods of expressing a functional gene product, and methods of using the gene and gene product. Structurally, members of this gene family contain three EGF-like domains and two discoidin I/factor VIII-like domains. Since del-1 is expressed in endothelial cells and certain cancer cells, it may be useful as an endothelial cell and tumor marker. In addition, the ability of Del-1 to inhibit vascular formation allows its use as an anti-angiogenic agent.
Abstract:
Isolated CagB gene of H. pylori consisting of nucleotides 193-1158 in the sequence according to Seq. ID. No. 1 and isolated cagC gene of H. pylori with sequence consisting of nucleotides 1170-3830 in the sequence according to Seq. ID. No. 3 are provided, as well as H. pylori specific nucleic acid probes and purified CagB and CagC proteins. CagB and CagC are associated with peptic ulceration and other clinical syndromes in humans infected with H. pylori expressing these antigens. Provided is a method of detecting presence of H. pylori strains expressing CagB or CagC antigens in subject, comprising contacting antibody-containing sample from subject with detectable amounts of CagB or CagC or specific antigenic fragments, detecting binding reaction of CagB or CagC or antigenic fragments and antibody produced by subject. Mutant strains of H. pylori lacking functional CagB or CagC are virulence attenuated due to reduced production of proinflammatory cytokine IL-8.
Abstract:
The present invention provides compositions and methods for enhanced delivery of nucleic acids to intracellular compartments. In particular, a method of enhancing delivery and expression of nucleic acids to the nucleus is provided, and a method of enhancing delivery of nucleic acids to the mitochondria is provided, utilizing a nuclear or mitochondrial localization complex, respectively.
Abstract:
An isolated nucleic acid encoding the Helicobacter pylori recombinase comprising the nucleotide sequence defined in the Sequence Listing as SEQ ID NO:1 is provided. Also provided is an isolated nucleic acid that selectively hybridizes with the nucleic acid of claim 1 under stringent conditions and has at least 70 % complementarity with the segment of the nucleic acid of SEQ ID NO:1 to which it hybridizes. Also provided is a mutant strain of H. pylori that does not express a functional recombinase (recA mutant). An immunogenic amount of the recA mutant H. pylori in a pharmaceutically acceptable carrier is provided. A method of immunizing a subject against infection by H. pylori comprises administering to the subject an immunogenic amount of mutant H. pylori in a carrier for the mutant.
Abstract translation:提供编码幽门螺杆菌重组酶的分离核酸,其包含序列表中定义的核苷酸序列,如SEQ ID NO:1。 还提供了分离的核酸,其在严格条件下选择性地与权利要求1的核酸杂交,并且与其杂交的SEQ ID NO:1的核酸的片段具有至少70%的互补性。 还提供了不表达功能重组酶(recA - 突变体)的幽门螺杆菌突变菌株。 提供了在药学上可接受的载体中的免疫原性量的recA u>突变体幽门螺杆菌。 免疫受试者免受幽门螺杆菌感染的方法包括向受试者施用免疫原性量的突变体的载体中的突变型幽门螺杆菌。
Abstract:
An isolated nucleic acid encoding the Helicobacter pylori vacuolating toxin, consisting of the nucleotides 101 through 3964 of the nucleotide sequence defined in the Sequence Listing as SEQ ID NO: 1 is provided. An isolated nucleic acid from Helicobacter pylori comprising the nucleotide sequence defined in the Sequence Listing as SEQ ID NO: 3 is provided. Isolated nucleic acids that selectively hybridize with the nucleic acids of the invention are provided. Also provided is a genetically altered mutant strain of H. pylori that does not express a functional vacuolating toxin. Purified proteins encoded by the nucleic acids of the invention are provided. A composition comprising an immunogenic amount of a protein or mutant strain of the invention in a pharmaceutically acceptable carrier is provided. A method of immunizing a subject against infection by H. pylori, comprising administering to the subject an immunogenic composition of the invention is provided.
Abstract translation:提供编码幽门螺杆菌空泡毒素的分离的核酸,其由SEQ ID NO:1的序列表中定义的核苷酸序列的核苷酸101至3964组成。 提供了幽门螺旋杆菌的分离核酸,其包含序列表中定义的核苷酸序列,如SEQ ID NO:3。 提供了与本发明的核酸选择性杂交的分离的核酸。 还提供了不表达功能性空泡毒素的幽门螺杆菌的遗传改变的突变菌株。 提供了由本发明的核酸编码的纯化的蛋白质。 提供了包含免疫原性量的本发明的蛋白质或突变株在药学上可接受的载体中的组合物。 一种免疫受试者免受幽门螺杆菌感染的方法,其包括向受试者施用本发明的免疫原性组合物。
Abstract:
Nitrogen retention in human subjects is promoted by administering beta -hydroxy- beta -methylbutyric acid (HMB). The amount of HMB administered is effective to conserve protein as determined by reduction in urinary nitrogen. The method can be used with patients having a negative nitrogen balance due to disease conditions, and also with normal elderly persons who are subject to protein loss. The HMB may be administered orally or by intravenous infusion.
Abstract:
The present invention provides an isolated nucleic acid encoding an approximately 120-128 kilodalton antigen of Helicobacter pylori, or an antigenic fragment thereof, wherein the antigen is associated with peptic ulceration. The present invention also provides methods of detecting the presence of a Helicobacter pylori strain possessing the 120-128 kilodalton antigen in a subject, comprising the steps of contacting an antibody-containing sample from the subject with a detectable amount of the tagA antigen or antigenic fragment of the present invention and detecting the reaction of the antigen or fragment and the antibody. A mutant H. pylori not expressing a functional tagA antigen is also provided.
Abstract:
The present invention relates to an improved method to diagnose systemic mast cell disorders by detecting the presence or concentration of certain metabolites of prostaglandin D2. In particular, this invention provides a more accurate means to diagnose systemic mast cell disorders than the present standard test involving the detection of Me-histamine.