6241results about "Reverse transcribing RNA viruses" patented technology

Sequence-specific oligonucleotides are provided having substantially pure chiral Sp phosphorothioate, chiral Rp phosphorothioate, chiral Sp alkylphosphonate, chiral Rp alkylphosphonate, chiral Sp phosphoamidate, chiral Rp phosphoamidate, chiral Sp phosphotriester, and chiral Rp phosphotriester linkages. The novel oligonucleotides are prepared via a stereospecific SN2 nucleophilic attack of a phosphodiester, phosphorothioate, phosphoramidate, phosphotriester or alkylphosphonate anion on the 3' position of a xylonucleotide. The reaction proceeds via inversion at the 3' position of the xylo reactant species, resulting in the incorporation of phosphodiester, phosphorothioate, phosphoramidate, phosphotriester or alkylphosphonate linked ribofuranosyl sugar moieties into the oligonucleotide.

Disclosed are immortalized human embryonic retina cells, having a nucleic acid sequence encoding an adenoviral E1A protein integrated into the genome of the cells, and further comprising a nucleic acid sequence encoding an enzyme involved in post-translational modification of proteins, such as a sialyltransferase, wherein said nucleic acid sequence encoding the enzyme involved in post-translational modification of proteins is under control of a heterologous promoter. Methods for producing recombinant proteins from such cells and obtaining such recombinant proteins having increased sialylation are provided as are novel compositions of isoforms of erythropoietin .

The present invention is directed to microparticles, to microparticle compositions containing the same, to methods of forming the same, and to uses for the same, including use for a vaccine, for raising an immune response, for treatment of a disease and for diagnosis of a disease. The microparticles comprise a biodegradable polymer, such as a poly(α-hydroxy acid), a polyhydroxy butyric acid, a polycaprolactone, a polyorthoester, a polyanhydride, or a polycyanoacrylate, and a detergent selected from a cationic detergent and an anionic detergent. The microparticles further comprise an antigen adsorbed on the surface of the microparticle.

In particular, this invention provides novel methods of populating data structures for use in evolutionary modeling. In particular, this invention provides methods of populating a data structure with a plurality of character strings. The methods involve encoding two or more a biological molecules into character strings to provide a collection of two or more different initial character strings; selecting at least two substrings from the pool of character strings; concatenating the substrings to form one or more product strings about the same length as one or more of the initial character strings; adding the product strings to a collection of strings; and optionally repeating this process using one or more of the product strings as an initial string in the collection of initial character strings.

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

The present invention relates to an integration defective retroviral vector particle for gene therapy comprising a viral genome, wherein said vector particle is capable of infecting a mammalian target cell.

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.

Provided is an improved treatment for Parkinson's Disease where the efficacy of L-Dopa treatment is increased by including gene therapy in the treatment regimen. The combination therapy results in long-term improvements in response to L-Dopa and diminished side effects caused by L-Dopa.

A method for the rational design and preparation of vaccines based on HIV envelope polypeptides is described. In one embodiment, the method for making an HIV gp120 subunit vaccine for a geographic region comprises determining neutralizing epitopes in the V2 and/or C4 domains of gp120 of HIV isolates from the geographic region and selecting an HIV strain having gp120 a neutralizing epitope in the V2 or C4 domain which is common among isolates in the geographic region. In a preferred embodiment of the method, neutralizing epitopes for the V2, V3, and C4 domains of gp120 are determined. At least two HIV isolates having different neutralizing epitopes in the V2, V3, or C4 domain are selected and used to make the vaccine. The invention also provides a multivalent HIV gp120 subunit vaccine.

The present invention relates to peptides which exhibit antifusogenic and antiviral activities. The peptides of the invention consist of a 16 to 39 amino acid region of a simian immunodeficiency virus (SIV) protein. These regions were identified through computer algorithms capable of recognizing the ALLMOTI5, 107x178x4, or PLZIP amino acid motifs. These motifs are associated with the antifusogenic and antiviral activities of the claimed peptides.

Provided is a lentiviral vector capable of delivering a nucleotide of interest (NOI) to a desired target site and wherein the NOI encodes the Factor VIII and the Factor VIII is expressed following delivery of the NOI to the desired target site.

A method of producing a transgenic cell comprising introducing into a cell a non-primate lentiviral expression vector comprising a nucleotide of interest (NOI). Also described is a method of producing a transgenic cell comprising introducing into a cell a lentiviral expression vector comprising a NOI capable of generating an antisense oligonucleotide, a ribozyme, an siRNA, a short hairpin RNA, a micro-RNA or a group 1 intron. Also described is a viral vector comprising a first nucleotide sequence, wherein said first nucleotide sequence comprises: (a) a second nucleotide sequence comprising an aptazyme; and (b) a third nucleotide sequence capable of generating a polynucleotide; wherein (a) and (b) are operably linked and wherein the aptazyme is activatable to cleave a transcript of the first nucleotide sequence such that said polynucleotide is generated.