15337 results about "Virology" patented technology

The present invention provides methods of re-engineering or re-shaping an antibody from a first species, wherein the re-engineered or re-shaped antibody does not elicit undesired immune response in a second species, and the re-engineered or re-shaped antibody retains substantially the same antigen binding-ability of the antibody from the first species. In accordance with the present invention, a combinatorial library comprising the CDRs of the antibody from the first species fused in frame with framework regions derived from a second species can be constructed and screened for the desired modified antibody. In particular, the present invention provides methods utilizing low homology acceptor antibody frameworks for efficiently humanizing an antibody or a fragment thereof. The present invention also provides antibodies produced by the methods of the invention.

Sequences of novel adeno-associated virus capsids and vectors and host cells containing these sequences are provided. Also described are methods of using such host cells and vectors in production of rAAV particles. AAV-mediated delivery of therapeutic and immunogenic genes using the vectors of the invention is also provided.

The present invention provides human sequence antibodies against human CTLA-4 and methods of treating human diseases, infections and other conditions using these antibodies.

The invention relates to transgenic non-human animals capable of producing heterologous antibodies and methods for producing human sequence antibodies which bind to human antigens with substantial affinity.

Disclosed are compounds, compositions and methods for treating hepatitis C virus infections.

The disclosed invention provides compositions and methods of treating a Flaviviridae infection, including hepatitis C virus, West Nile Virus, yellow fever virus, and a rhinovirus infection in a host, including animals, and especially humans, using a (2′R)-2′-deoxy-2′-fluoro-2′-C-methyl nucleosides, or a pharmaceutically acceptable salt or prodrug thereof.

The invention provides a cyclic single-chain trispecific antibody against human tumor. It comprises three parts. The first part is an anti-tumor Fab antibody, an anti-tumor single-domain antibody or an scFv. The second part is a reshaped Fab antibody against human CD3, a reshaped single-domain antibody against human CD3 or a reshaped scFv against human CD3. The third part is a reshaped Fab antibody against human CD28, a reshaped single-domain antibody against human CD28 or a reshaped scFv against human CD28. The present invention also offers the DNA sequence coding for this trispecific antibody, expression vectors containing this DNA sequence and host cells (E. coli) containing the vectors.

Sequences of novel adeno-associated virus capsids and vectors and host cells containing these sequences are provided. Also described are methods of using such host cells and vectors in production of rAAV particles. AAV-mediated delivery of therapeutic and immunogenic genes using the vectors of the invention is also provided.

The present invention includes a method of inhibiting, suppressing or preventing a viral infection in a subject, comprising administering to the subject a pharmaceutical composition comprising one or more of the compounds useful within the invention.

This invention relates to methods for treating or preventing hepatitis C virus infections in mammals using Toll-Like Receptor (TLR)7 ligands and prodrugs thereof. More particularly, this invention relates to methods of orally administering a therapeutically effective amount of one or more prodrugs of TLR7 ligands for the treatment or prevention of hepatitis C viral infection. Oral administration of these TLR7 immunomodulating ligands and prodrugs thereof to a mammal provides therapeutically effective amounts and reduced undesirable side effects.

This invention relates to monovalent and multivalent, monospecific antibodies and to multivalent, multispecific antibodies. One embodiment of these antibodies has one or more identical binding sites where each binding site binds with a target antigen or an epitope on a target antigen. Another embodiment of these antibodies has two or more binding sites where these binding sites have affinity towards different epitopes on a target antigen or different target antigens, or have affinity towards a target antigen and a hapten. The present invention further relates to recombinant vectors useful for the expression of these functional antibodies in a host. More specifically, the present invention relates to the tumor-associated antibody designated PAM4. The invention further relates to humanized and human PAM4 antibodies, and the use of such antibodies in diagnosis and therapy.

Provided herein are methods and composition for immune repertoire sequencing and single cell barcoding for heavy and IgL pairing if antibodies.

This disclosure describe three related novel methods for Recombinase-Polymerase Amplification (RPA) of a target DNA that exploit the properties of recombinase and related proteins, to invade double-stranded DNA with single stranded homologous DNA permitting sequence specific priming of DNA polymerase reactions. The disclosed methods have the advantage of not requiring thermocycling or thermophilic enzymes. Further, the improved processivity of the disclosed methods may allow amplification of DNA up to hundreds of megabases in length.

The present invention relates to a method for the generation of VH heavy chain-only antibodies in a transgenic non-human mammal. In particular, the present invention relates to a method for the production of a VH heavy chain-only antibody in a transgenic non-human mammal comprising the step of expressing more than one heterologous VH heavy chain locus in that mammal.

A mutant bispecific antibody that includes (a) a human hinge constant region from IgG having one or more amino acid mutations in the CH2 domain, (b) two scFvs; and (c) two Fvs has been constructed. This type of antibody displays enhanced clearance, which has been found to be particularly useful in the context of pre-targeting methods.

[Summary][Problem] Provided is a substituted spiropyrido[1,2-a]pyrazine derivative or a pharmaceutically acceptable salt thereof, which is useful as an anti-HIV agent.[Solving Means] The present invention relates to a compound represented by the following formula [I] or [II] or a pharmaceutically acceptable salt thereof:wherein each symbol is as defined in the specification.

Polypeptides, polynucleotides, methods, compositions, and vaccines comprising influenza hemagglutinin and neuraminidase variants are provided.

Abstract of the Disclosure The present invention relates to methods for selecting repertoires of polypeptides using generic and target ligands. In particular, the invention relates to a library comprising a repertoire of polypeptides of the immunoglobulin superfamily, wherein the members of the repertoire have a known main chain conformation.

Compounds for use in the treatment of human immunodeficiency virus (HIV) infection are disclosed. The compounds have the following Formula (I):including stereoisomers and pharmaceutically acceptable salts thereof, wherein R1, X, W, Y1, Y2, Z1, and Z4 are as defined herein. Methods associated with preparation and use of such compounds, as well as pharmaceutical compositions comprising such compounds, are also disclosed.

Disclosed and claimed is a new insect cell line, Sf900+, ATCC CRL-12579. The insect cell line was established from Lepidoptera, Noctuidae, Spodoptera frugiperda Sf-9 (ATCC CRL-1711) through multiple rounds of limiting dilution and selection in a serum-free insect medium supplemented with added human insulin. The insect cell line is useful in BEVS or as an adjuvant and has many characteristics and advantages. Also disclosed and claimed are recombinant proteins from recombinant baculovirus expression in insect cells such as Sf900+ cells, for instance, HA, NA, EPO, CD4, CEA, and thrombospondin.

The invention relates to a method for the isolation of hepatitis C virus. The method comprises the separation of particles termed exosomes from the blood plasma of an individual infected with hepatitis C virus (HCV) and the extraction or RNA from these exosome particles.

This invention relates to the field of recombinant antibody technology. It provides novel recombinant IgY antibody constructs for diagnostic and therapeutical applications. The bivalent antibody constructs display a heterotetrameric or homodimeric format stabilized by disulfide bonds. The constant heavy chain domains CH2-CH4 are partly or completely of avian origin, whereas the VH, VL, CL, and CH1 domains as well as the hinge region may be of avian origin or derived from any other species. The invention allows to combine the advantages of IgY antibodies with those of established mammalian monoclonal antibodies. IgY antibody constructs comprising nonglycosylated IgY constant heavy chain domains allow to reduce unwanted interactions with C-type lectins, e.g., in human sera. Furthermore, chimeric IgY antibody containing mammalian VH, VL, CL, and CH1 domains as well as a mammalian hinge region provide a higher molecular stability than IgY antibodies in acidic conditions and, thereby, are especially suited for peroral therapeutic applications.

The invention is directed towards mouse-human chimeric variants of CC49 monoclonal antibodies with minimal murine content. A first aspect of the invention provides CDR variants of humanized monoclonal antibody (HuCC49) in which less than all six (three heavy chain and three light chain) Complementarity Determining Regions (CDRs) of CC49 are present. A second aspect of the invention provides SDR variants of humanized monoclonal antibody (HuCC49) in which only Specificity Determining Regions (SDRs) of at least one CDR from CC49 are present. The invention is also directed towards biotechnological methods of making the variants and therapeutic methods of using the variants.

The present invention relates to tripeptide compounds, compositions and methods for the treatment of hepatitis C virus (HCV) infection. In particular, the present invention provides novel tripeptide analogs, pharmaceutical compositions containing such analogs and methods for using these analogs in the treatment of HCV infection.