31 results about "BK virus" patented technology

Methods and kits are provided for testing for the presence or absence of a polyomavirus, such as BKV, in a sample. The methods and kits are useful for quantifying BKV and differentiating BKV from JCV.

Described herein are probes and primers for detecting and quantitating variant BK viral strains and methods and devices of identifying and using the described probes and primers.

The present invention is a method of using the BK enhances in tandem with a eukaryotic promoter to promote transcription of DNA that encodes a useful substance. The method of the present invention requires the presence of the E1A gene produce for maximum expression of the useful substance. The present invention also comprises a number of useful expression vectors that comprise the BK enhancer in tandem with the adenovirus 2 late promoter positioned to drive expression of a variety of proteins, such as protein C, chloramphenicol acetyltransferase, and tissue plasminogen activator. The present invention further comprises a method for increasing the activity of the BK enhancer involving placement of the BK enhancer immediately upstream of the eukaryotic promoter used in tandem with the BK enhancer to drive expression of a useful substance. Furthermore, the present invention also comprises a method for coamplification of genes in primate cells. Additionally, the invention further comprises the recombinant human protein C molecule produced in 293 cells which comprises novel glycosylation patterns.

The present invention relates to HLA-A*02-restricted cellular epitopes within the VP1 polypeptide of a human polyomavirus, BK virus, which is associated with polyomavirus-associated nephropathy in kidney transplant patients. Preferred peptides correspond to amino acids residues 107-116, 108-116 and 44-52 of BKV VP1, and are processed in vivo in natural infection with BKV. Effector T cell populations stimulated by the peptides represent functional CTLs as assessed by cytotoxicity and cytokine production, and are reactive against cells presenting both the BKV peptides above and the JC virus homolog sequences.

Provided are novel human-derived antibodies specifically recognizing polyomavirus polypeptides, preferably capable of binding to polyomaviruses of the type of JC virus (JCV) and / or BK virus (BKV) as well as methods related thereto. Furthermore, assays and kits related to antibodies specific for polyomaviruses, polyomavirus VP1 and or polyomavirus VP1 Virus-Like Particles (VLPs), preferably of the type of JCV and / or BKV, are disclosed. The human-derived antibodies as well as binding fragments, derivatives and variants thereof can be used in pharmaceutical and diagnostic compositions for polyomavirus targeted immunotherapy and diagnostics.

Provided herein are methods of rapidly expanding BKV-specific T cells using a peptide mixture and cytokines. Further provided herein are methods of treating polyomavirus-associated diseases by administering the BKV-specific T cells.

The invention discloses primer sequences and a quantitative determination kit used for simultaneously detecting human CMV and BK virus DNA. The invention discloses primers, fluorescent probes, and a real-time quantitative polymerase chain reaction (real-time PCR) kit used for simultaneously carrying out quantitative determinations on deoxyribonucleic acid (DNA) segments of cytomegalovirus (CMV) and BK virus (BKV). The kit comprises reagent A, B, C, D, E, and G. The reagent A is composed of a mixed set of primers and probes, wherein the primers and probes are targeted at consensus sequences ofCMV DNA and BKV DNA. The reagent B is a buffer solution containing dNTP. The reagent C is Tag DNA polymerase. The reagent D is composed of standard samples with different concentrations. The reagent E and G are respectively positive and negative controls. With the whole set of kit provided by the invention, quantitative determinations can be simultaneously carried out on DNA of CMV and BK virusesin clinical specimens of urine, blood or other body fluids.

Methods for the rapid detection of the presence or absence of BK virus in a biological or non-biological sample are described. The methods can include performing an amplifying step, a hybridizing step, and a detecting step. Furthermore, primers and probes targeting BK virus and kits are provided that are designed for the detection of BK virus.

The invention relates to a detection method of a virus and a kit and particularly relates to a detection method of a BK virus and a kit thereof. The detection method comprises the following steps of: firstly, designing specific primers BKV-F and BKV-R and a Taqman fluorescence probe BKV-P aiming at a BK virus gene group; marking a fluorophore on a 5' end of the Taqman fluorescence probe BKV-P andmarking a quencher at any position the Taqman fluorescence probe BKV-P except the 5' end; then treating a sample to be detected and carrying out PCR (Polymerase Chain Reaction); and finally, detecting a reaction result by using a fluorescent quantitation PCR instrument. The detection method disclosed by the invention has the advantages that the qualitative and quantitative detection can be realized, and high sensibility, good specificity, rapid reaction and low cost also can be realized. The invention further relates to a detection kit of the BK virus and an application of the detection method.

The invention relates to compositions, methods, and kits for treating subjects infected by or at risk of infection with a DNA virus (e.g., a JC Virus or a BK virus). Aspects of the invention are useful to prevent or treat DNA virus associated conditions (e.g., PML) in subjects that are immunocompromised. Compositions are provided that inhibit intracellular replication of DNA viruses.