摘要:
The present invention relates generally to viral variants exhibiting reduced sensitivity to agents such as nucleoside or nucleotide analogs or other DNA polymerase antagonists and/or reduced interactivity with immunological reagents. More particularly, the present invention is directed to hepatitis B virus (HBV) variants exhibiting complete or partial resistance to nucleoside or nucleotide analogs or other DNA polymerase antagonists and/or reduced interactivity with antibodies to viral surface components including reduced sensitivity to these antibodies. The present invention further contemplates assays for detecting such viral variants, which assays are useful in monitoring anti-viral therapeutic regimens and in developing new or modified vaccines directed against viral agents and in particular HBV variants. The present invention also contemplates the use of the viral variants to screen for and/or develop or design agents capable of inhibiting infection, replication and/or release of the virus.
摘要:
The invention provides polypeptides, nucleic acids, antibodies, compositions, vaccines, microarrays and uses thereof for the prevention, treatment of HCV infection. The invention further provides uses of the above-noted products for the detection and diagnosis of HCV infection. The invention further provides corresponding methods and commercial packages relating to such uses. The invention further provides recombinant polypeptides and methods for their production.
摘要:
The present invention relates generally to viral variants exhibiting reduced sensitivity to agents such as nucleoside or nucleotide analogs or other DNA polymerase antagonists and/or reduced interactivity with immunological reagents. More particularly, the present invention is directed to hepatitis B virus (HBV) variants exhibiting complete or partial resistance to nucleoside or nucleotide analogs or other DNA polymerase antagonists and/or reduced interactivity with antibodies to viral surface components including reduced sensitivity to these antibodies. The present invention further contemplates assays for detecting such viral variants, which assays are useful in monitoring anti-viral therapeutic regimens and in developing new or modified vaccines directed against viral agents and in particular HBV variants. The present invention also contemplates the use of the viral variants to screen for and/or develop or design agents capable of inhibiting infection, replication and/or release of the virus.
摘要:
A method of treating chronic hepatitis B is disclosed that comprises administering a T cell-stimulating amount of a vaccine to a patient. The vaccine comprises an immunogenic amount of chimeric, carboxy-terminal truncated hepatitis B virus nucleocapsid (core) protein (HBc) that is engineered for both enhanced stability of self-assembled particles and the substantial absence of nucleic acid binding by those particles. The chimeric protein molecule can include one or more immunogenic epitopes peptide-bonded to one or more of the N-terminus, the immunogenic loop or the C-terminus of HBc. The enhanced stability of self-assembled particles is obtained by the presence of at least one heterologous cysteine residue near one or both of the amino-terminus and carboxy-terminus of the chimer molecule.
摘要:
Hitherto undiscovered 3' sequence of GBV confers infectivity in tamarins on otherwise non-infective GBV genome. HCV sequences may be substituted within an infective GBV genome to provide for in vivo assays for agents able to modulate HCV activity.