摘要:
L'invention prévoit une préparation pharmaceutique comportant comme ingrédients actifs certaines protéines analogues de IL-3 (Pro8Asp16Asp70) humaine purifiées et tronquées exprimées par de la levure transformée de l'espèce des Saccharomyces cerevisiae, qui, lorsqu'elles sont administrées à un primate, ne provoquent pas d'urticaires décelables.
摘要:
Mammalian Interleukin-1 receptor proteins (IL-1Rs), DNAs and expression vectors encoding mammalian IL-1Rs, and processes for producing mammalian IL-1Rs as products of cell culture, including recombinant systems, are disclosed.
摘要:
Mammalian Interleukin-7 proteins (IL-7s), DNAS and expression vectors encoding mammalian IL-7s, and processes for producing mammalian IL-7s as products of cell culture, including recombinant systems, are disclosed.
摘要:
Mammalian Interleukin-1 receptor proteins (IL-1Rs), DNAs and expression vectors encoding mammalian IL-1Rs, and processes for producing mammalian IL-1Rs as products of cell culture, including recombinant systems, are disclosed.
摘要:
Des sujets souffrant de maladies infectieuses sont traitées par administration directe de quantités thérapeutiquement efficaces d'un facteur de stimulation de colonies de granulocytes-macrophages utilisées par lui-même ou conjointement avec un antibiotique ou un sulfonamide ou d'autres agents thérapeutiques immunologiquement efficaces. Le facteur de stimulation de colonies de granulocytes-macrophages homogènes utilisé dans le traitement de maladies bactériennes est préparé par des techniques d'ADN recombinant puis est purifié jusqu'à son homogénéité par chromatographie liquide de haute performance en phase inverse de sorte qu'il peut être administré sans danger à des sujets souffrant de maladies infectieuses.
摘要:
An assay, test kit and novel antibodies for use therein are provided for detecting the presence of inflammation caused, for instance, by infectious disease or immune dysfunction, measures the level of IL-1 in body fluid, such as serum. Various assay techniques may be employed including direct assays, competitive assays and double determinant assays. The assay and test kit employs novels polyclonal or monoclonal antibodies specific for unique antigenic sites on the IL-1 protein or IL-1 peptide.
摘要:
Macrophages and precursor monocytes are activated to exhibit tumoricidal activity by stimulation solely with granulocyte-macrophage colony stimulating factor. A patient suffering from tumors can be treated by direct administration of therapeutically effective quantities of activated granulocyte-macrophage colony stimulating factor. Homogeneous granulocyte-macrophage colony stimulating factor for use in activating macrophages and monocyte precursors is prepared by recombinant DNA techniques. The gene coding for granulocyte-macrophage colony stimulating factor is isolated and then recombinant protein product expressed in an appropriate expression system. The granulocyte-macrophage colony stimulating factor recovered from the expression system is purified to homogeneity by reverse phase high-performance liquid chromatography.
摘要:
Interleukin-2 receptor derived from normal and malignant cells has been purified by use of various techniques including affinity chromatography in conjunction with a monoclonal antibody directed to the receptor. The purification process also includes reversed phased high performance liquid chromatography. By these techniques, interleukin-2 receptor has been purified to homogeneity. The high purification of the interleukin-2 receptor has made possible the sequencing of the amino acid residues at the N-terminal of this protein molecule. Double-stranded cDNA is prepared from polyadenylated RNA extracted from cell lines or other sources known to produce IL-2 receptor. The cDNA is inserted within a plasmid vector and then the recombinant plasmid employed to transform an appropriate host. Transformed hosts are identified and grouped into pools. Plasmid DNA prepared from these pools is hybridized with a labeled synthetic oligonucleotide probe corresponding to a portion of the amino acid sequence of the purified IL-2 receptor. The cDNA clone isolated with the probe is characterized by restriction enzyme mapping and sequenced by chain-termination method. The particular DNA clone that actually contains the gene coding for the functional IL-2 receptor is identified by expressing the clones in COS-7 monkey kidney cells and assaying for the expressed IL-2 receptor by its ability to bind IL-2 or a monoclonal antibody directed against the IL-2 receptor.
摘要:
A substitute for serum in a cell culture medium comprises fetuin, transferrin, and phosphatidylcholine having the general formula: wherein: R, is either a saturated fatty acid selected from the group consisting essentially of lauric acid, myristic acid, palmitic acid and stearic acid; or an unsaturated fatty acid selected from the group consisting essentially of oleic acid, linoleic acid, linolenic acid, and arachidonic acid; and R 2 is conversely either an unsaturated fatty acid selected from the group consisting essentially of oleic acid, linoleic acid, linolenic acid and arachidonic acid; or a saturated fatty acid selected from the group consisting essentially of lauric acid, myristic acid, palmitic acid and stearic acid. A serum-free medium comprises such substitute together with inorganic salts, amino acids carbohydrates, buffering agents, vitamins and compounds to simulate the natural cell environment. It is capable of growing a wide range of suspension and monolayer cells.