摘要:
The present invention provides a deoxyribonucleic acid (DNA) segment related to a human plasminogen activator gene. The segment is inserted into a plasmid vector which in turn can be incorporated into a bacterium or other microorganism. The bacterium can then be cultured to produce a plasminogen activator protein having properties of human urokinase.
摘要:
Methods and vaccines for the production of antibodies to infectious organisms are described. Live recombinant adenovirus containing a foreign gene coding for an antigen produced by another infectious organism is delivered to the intestine of a warm-blooded animal in an enteric-coated dosage form, whereupon the virus infects the gut wall and induces the production of antibodies or cell mediated immunity to both adenovirus and the other infectious organism.
摘要:
The invention disclosed herein provides a method of treating an animal infected by hepatitis B virus comprising administering to such infected animal an amount of a rifamycin derivative selected from a group consisting of(a) 3-amino-4-deoxo-4-imino-rifamycin S,(b) 3-amino-4-deoxo-4-[(4-aminophenyl)sulphonyl]amino-rifamycin SV,(c) 4-O-n-butylsulphonyl-3-[(1-piperidinylimino)methyl]-rifamycin SV,(d) 4-O-n-butylsulfonyl-3-[(4-morpholinylimino)methyl]-rifamycin SV,(e) 3-[(dimethylhydrazono)methyl]-4-O-[(3-phenylpropyl)sulfonyl]-rifamycin SV said amount being effective to alleviate the effects of said hepatitis B virus. Also disclosed is a method of inhibiting the viral polymerase of hepatitis B virus by subjecting said polymerase to an amount of one of the rifamycin derivatives (a)-(e) above, said amount being effective to prevent the synthesis of hepatitis B virus by said viral polymerase.
摘要:
The invention disclosed herein provides a method of treating an animal infected by hepatitis B virus comprising administering to such infected animal an amount of a rifamycin derivative selected from a group consisting of(a) 3-amino-4-deoxo-4-imino-rifamycin S,(b) 3-amino-4-deoxo-4-[(4-aminophenyl)sulfonyl]amino-rifamycin SV,(c) 4-O-(n-butylsulfonyl)-3-[(1-piperidinylimino)methyl]-rifamycin SV,(d) 4-O-(n-butylsulfonyl)-3-[(4-morpholinylimino)methyl]-rifamycin SV,(e) 3-[(dimethylhydrazono)methyl]-4-O-[(3-phenylpropyl)sulfonyl]-rifamycin SV, and(f) 4-deoxo-N,3-ethylidenimino-4-(methylsulfonyl)amino-rifamycin SV, said amount being effective to alleviate the effects of said hepatitis B virus. Also disclosed is a method of inhibiting the viral polymerase of hepatitis B virus by subjecting said polymerase to an amount of one of the rifamycin derivatives (a)-(f) above, said amount being effective to prevent the synthesis of hepatitis B virus by said viral polymerase. Compounds (b)-(f) described above are novel compounds.
摘要:
The present invention provides a deoxyribonucleic acid (DNA) segment related to a human plasminogen activator gene. The segment is inserted into a plasmid vector which in turn can be incorporated into a bacterium or other microorganism. The bacterium can then be cultured to produce a plasminogen activator protein having properties of human urokinase.
摘要:
Described is a structurally modified urokinase which is biologically active over an extended time period in comparison to native urokinase. The extended activity permits the administration of lower doses of urokinase when it is used in the treatment of thromboembolic diseases. Methods of appropriately modifying the structure of urokinase are described.
摘要:
Described is a method of obtaining complete copying of the entire length of single stranded ribonucleic acid (RNA) into its complementary deoxyribonucleic acid (cDNA) by reverse transcription using binding protein. The method can be used in recombinant DNA research to copy total messenger RNA into DNA.
摘要:
This invention provides a method of protecting a primate from an infectious organism by stimulating the production of antibodies or cell mediated immunity to the infectious organism which comprises administering to said primate intranasally, intramuscularly, or subcutaneously, live recombinant adenoviruses in which the virion structural protein is unchanged from that in the native adenovirus from which the recombinant adenovirus is produced, and which contain the gene coding for the antigen corresponding to said antibodies or inducing said cell mediated immunity. Preferably, the infectious organism is HIV and the primate is a human.
摘要:
Chimeric DNA fragments are provided which include a nucleotide sequence substantially the same as that which codes for the HA surface protein of an influenza A virus having five immunodominant antigenic sites, wherein a nucleotide sequence substantially the same as that which codes for a foreign epitope is inserted into the nucleotide sequence of an antigenic site. Corresponding chimeric peptides, expression vectors, and transformed hosts are provided as well. These peptides are useful in providing vaccines against the respective antigens and in test kits to detect the exposure to such antigens. Additionally, these peptides or their corresponding antibodies are useful in methods of treatment and prevention of the manifestations of exposure to these antigens, including immunotherapy.