63 results about "Recombinant interferon" patented technology

A medicament based on antibodies contains an activated form of monoclonal, polyclonal, or natural antibodies to interferon in low or ultra-low doses prepared by multiple consecutive dilutions and exposure to external factors, preferably in accordance with homeopathic technology. In order to obtain antibodies, human or heterologous interferon alpha, beta, or gamma, including recombinant interferon, is used; a mixture of various, mostly centimal, homeopathic dilutions being employed. A method of treating a pathologic syndrome, whose formation is affected by interferon, consists in the use of activated forms of antibodies to interferon alpha, beta, or gamma in low or ultra-low doses obtained by multiple consecutive dilutions and exposure to external factors.

The present invention provides IFNα2 mutants and active fragments, analogs, derivatives, and variants thereof, nucleotide molecules encoding same, pharmaceutical compositions containing the same, and methods utilizing the same for treating cancer, infectious diseases, and autoimmune diseases.

High pressure to treat aggregated interferons, particularly recombinant human interferon-β, to reduce the aggregate content of interferon material. Highly pure, soluble monomeric recombinant interferon-β is prepared in representative embodiments. Multiple strategies may be used in combination that make nonglycosylated IFN-β more amenable to high pressure treatment. It has been found that refolding yields of high pressure treatment can be significantly improved by use of a combination of strategies, including, or example a pre-treatment of the IFN-β that involves solubilizing and then precipitating the protein. This pre-treatment is particularly effective with respect to recombinant IFN-β inclusion bodies recovered from host cells such as E. coli cells. According to another strategy, refolding under high pressure is much more effective when the refolding reagent incorporating the IFN-β incorporates a zwitterionic surfactant and / or a cholate salt. When a solubilization and precipitation pre-treatment is used, the effectiveness of the high pressure treatment is further enhanced when the refolding reagent incorporating the protein incorporates a disulfide shuffling chemistry such as cysteine / cystine. According to still yet another strategy, high pressure treatment is more effective when using atypically high treatment pressures. When coupled with purification techniques, these strategies singly or in combination provide a low aggregate or substantially aggregate free, biologically active solution. Biologically active solutions comprising nonglycosylated interferon, said interferon comprising less than about 5 weight percent of protein aggregation has been found to exhibit improved PK / PD characteristics.

The present invention provides IFNα2 mutants and active fragments, analogs, derivatives, and variants thereof that have improved specific agonist or antagonist activity as compared to wild-type IFNα2. The present invention further provides pharmaceutical compositions comprising IFNα2 mutants useful for treating or preventing cancer, autoimmune diseases, infectious diseases or disorders associated with increased expression of IFNα2.

High pressure to treat aggregated interferons, particularly recombinant human interferon-β, to reduce the aggregate content of interferon material. Highly pure, soluble monomeric recombinant interferon-β is prepared in representative embodiments. Multiple strategies may be used in combination that make nonglycosylated IFN-β more amenable to high pressure treatment. It has been found that refolding yields of high pressure treatment can be significantly improved by use of a combination of strategies, including, or example a pre-treatment of the IFN-β that involves solubilizing and then precipitating the protein. This pre-treatment is particularly effective with respect to recombinant IFN-β inclusion bodies recovered from host cells such as E. coli cells. According to another strategy, refolding under high pressure is much more effective when the refolding reagent incorporating the IFN-β incorporates a zwitterionic surfactant and / or a cholate salt. When a solubilization and precipitation pre-treatment is used, the effectiveness of the high pressure treatment is further enhanced when the refolding reagent incorporating the protein incorporates a disulfide shuffling chemistry such as cysteine / cystine. According to still yet another strategy, high pressure treatment is more effective when using atypically high treatment pressures. When coupled with purification techniques, these strategies singly or in combination provide a low aggregate or substantially aggregate free, biologically active solution. Biologically active solutions comprising nonglycosylated interferon, said interferon comprising less than about 5 weight percent of protein aggregation has been found to exhibit improved PK / PD characteristics.

The invention relates to a method for purifying interferon protein. The method adopts a reverse phase filler refining and separating purification step in a purification process. Compared with the prior art, the method purifies an interferon by using a reverse phase filler refining and separating method for the first time and improves the electrophoresis purity of the interferon to 98 percent from90 percent, HPLC purity to 98 percent from 90 percent and specific activity of the interferon to 3.5*10<8>U / mg to 0.9*10<7>U / mg. The purification process of the recombinant interferon can greatly improve the purity, specific activity and stability of human interferons and effectively reduce the side effects of the interferons in clinic.

This invention provides a recombinant interferon (rSIFN-co) and its equivalent with changed spatial configuration, high efficacy and low side effects. Therefore, high dose of rSIFN-co may be used. The cytotoxic effect of rSIFN-co is only one-eighth (⅛) of currently clinically available interferons but its anti-viral effect is approximately five to twenty (5-20) times higher, and when used in vivo it has a broader spectrum of clinical applications and longer biofeedback response. This invention further provides methods of using the recombinant interferon to treat proliferative disorders such as cancer or viral diseases.

The invention relates to an isolation process for recombination protein in gene engineering, in particular a process for isolating purification gene engineering recombination interferon (IFN) by using immunity isolation technique, which belongs to the field of biological technology, wherein dissimilar materials are employed for preparation of magnetic micro-balloons containing hydroxyl, after epichlorohydrin activating, active amino is introduced and glutaric dialdehyde is used as link arm for joining the antiinterferon antibody.