摘要:
The present disclosure relates to the use of an Epstein Barr virus origin of replication (oriP) or a functional fragment thereof in a protein expression construct to increase production of a protein of interest in mammalian cells. Also disclosed are protein expression constructs for increased production of antibodies in mammalian cells, and mammalian cells containing the expression constructs.
摘要:
A method for treating cancer in mammals using an expression vector to transfect cancer cells in vivo and in situ. The vector includes one or more immunogenic exogenous polypeptides that are expressed by the cancer cells upon transfection. The body's immune response is triggered and directed to attack the transfected cancer cells. Once the immune response to the exogenous peptide on the cancer cells is initiated, an immune response to the other cancer associated or cancer specific antigens on or in the cancer cells takes over and eliminates all cancer cells, transfected or not.
摘要:
Nucleic acid molecules and compositions comprising one or more nucleotide sequences that encode a consensus Epstein-Barr virus (EBV) antigen. Immunomodulatory methods and methods of inducing an immune response against EBV are disclosed. Method of treating infection by EBV and methods of treating or preventing a disease or disorder associated with EBV are disclosed. Modified consensus EBV antigens are disclosed.
摘要:
Methods for generating/expanding populations of immune cells comprising immune cells specific for an Epstein Barr Virus (EBV) lytic antigen are disclosed, the methods comprising stimulating immune cells specific for an EBV lytic antigen by contacting peripheral blood mononuclear cells (PBMCs) with: (i) one or more peptides corresponding to all or part of one or more EBV lytic antigens; or (ii) antigen presenting cells (APCs) presenting one or more peptides corresponding to all or part of one or more EBV lytic antigens. Also disclosed are populations of immune cells comprising immune cells specific for an EBV lytic antigen expanded according to such methods, and uses thereof.
摘要:
This invention relates to cytomegalovirus (CMV) proteins suitable for vaccine uses. Provided herein are mammalian host cells, in particular CHO cells, in which the sequence(s) encoding CMV proteins gH, gL, pUL128, pUL130, pUL131 (or a complex-forming fragment thereof) are stably integrated into the genome.
摘要:
Compositions and methods useful for producing an immune response in a subject specific for the RSV G protein are described herein. The new methods and compositions described herein are made possible by the development of a new recombinant RSV G protein fragment, which has been engineered for in vitro production and is antigenically similar to the native RSV G protein. The recombinant RSV G protein fragment is capable of inducing the production of RSV G-specific antibodies when injected into a subject. These antibodies can recognize both RSV A and RSV B strains and inhibit infection of both viruses. Accordingly, the compositions and methods described herein may be useful in protecting subjects from RSV infection via immunization, raising antibodies specific for RSV, which can in turn be used to treat RSV infection.
摘要:
Processes vectors and engineered cell lines for large-scale transfection and protein production in mammalian cells, especially Chinese Hamster Ovary (CHO) cells are described in which transfection efficiencies are realized through the use of a single vector system, the use of functional oriP sequences in all plasmids, the use of codon-optimized Epstein-Barr virus nuclear antigen-1 (EBNA1) constructs the use of a fusion protein between a truncated Epstein-Barr virus nuclear antigenen-1c (EBNA1c) protein and a herpes simplex virus protein VP16, the use of a 40 kDa fully deacetylated poly(ethylenimine) as a transfection reagent, the use of co-expression of a fibroblast growth factor (FGF) and/or the use of protein kinase B to potentiate heterologous gene expression enhancement by valproic acid (VPA).
摘要:
Epstein-Barr virus (EBV) specific polypeptides consisting of a series of one to 1000 peptide units selected from the group consisting of peptide units Φ, Γ, Δ and Ω, wherein Φ is 25 amino acids or less and has the formula (αETFTETWNRFITHTEβ) (SEQ ID NO:1), Γ is 25 amino acids or less and has the formula (αGMLEASEGLDGWIHQβ) (SEQ ID NO:2), Δ is 25 amino acids or less and has the formula (αHQQGGWSTLIEDNIβ) (SEQ ID NO:3), Ω is 25 amino acids or less and has the formula (αKQKHPKKVKQAFNPLβ) (SEQ ID NO:4), α and β are each independently from 0 to 5 naturally occurring amino acids, and the polypeptide is capable of binding antibody in a specimen from an individual with Epstein-Barr virus (EBV)-associated disease are disclosed. Also disclosed are the use of these polypeptides for the production of polypeptide-specific antibodies and the diagnosis and treatment of EBV-associated disease.
摘要翻译:由一系列1至1000个肽单元组成的爱泼斯坦 - 巴尔病毒(EBV)特异性多肽,其选自肽单元Phi,Gamma,Delta和Omega,其中Phi为25个氨基酸或更少,具有式(αETFTETWNRFITHTEβ) (SEQ ID NO:1),Gamma为25个氨基酸以下,具有式(αGMLEASEGLDGWIHQbeta)(SEQ ID NO:2),Δa为25个氨基酸以下,具有式(αHQQGGWSTLIEDNIPbeta)(SEQ ID NO:3 ),Omega为25个氨基酸以下,具有式(αKQKHPKKVKQAFNPLbeta)(SEQ ID NO:4),α和β各自独立为0〜5个天然存在的氨基酸,并且该多肽能够结合样品中的抗体 来自患有爱泼斯坦 - 巴尔病毒(EBV)相关疾病的个体。 还公开了这些多肽用于产生多肽特异性抗体以及EBV相关疾病的诊断和治疗的用途。
摘要:
In the area of virus diagnosis, in particular Epstein-Barr virus (EBV) diagnosis, methods for the detection of EBV and agents suitable for this purpose are provided, including peptides which are derived from p18-VCA and permit discrimination between acute and past EBV infection.
摘要:
The invention provides a vector encoding a derivative of EBNA-1 that is not cytotoxic when expressed efficiently in cells, which supports extrachromosomal replication, maintenance and transcription from extrachromosomal oriP containing vectors but does not substantially activate transcription from host cell genes. Also provided is a vector having oriP and encoding a derivative of EBNA-1. The vectors of the invention may be employed in vitro and in gene therapy.