摘要:
The present invention provides novel, isolated, tumor-associated antigens, and methods for identifying such antigens in a biological sample, and of screening for the presence of such an antigen in a biological specimen, wherein the tumor antigen identified reacts with serum from a subject treated with a vaccine comprising a cytokine and proliferation-incompetent tumor cells which express the tumor-associated antigen. Also provided are kits for carrying out the methods of the invention.
摘要:
Recombinant lentiviruses and transfer vectors for transgene delivery as well as methods for gene therapy using such vectors are disclosed. The invention provides a third generation lentiviral packaging system and a set of vectors for producing recombinant lentiviruses, as well as novel tissue specific enhancer and promoter elements useful for optimizing liver specific transgene delivery. The transgene is preferably a blood clotting factor such as human factor IX (hFIX) or human factor VIII (hFVIII) and can be used for treatment of hemophilia.
摘要:
Adenovirus packaging cell lines for growth of an E1A/E1B deficient adenovirus that is substantially free of replication competent adenovirus (RCA) are provided. Methods for producing adenovirus substantially free of RCA are also provided, wherein the adenovirus is grown in a cell line containing coding sequences for adenovirus E1A and E1B, which are operably linked to promoters that lack polynucleotide sequences sharing substantial sequence identity with the native adenovirus E1A and E1B promoters.
摘要:
Compositions comprising host cell specific adenovirus vehicles are provided for transfecting target host cells. The compositions comprise replication competent adenovirus having an adenovirus gene essential for replication under transcriptional control of a cell type specific transcriptional response element (TRE) and polyethylene glycol (PEG) as a masking agent.
摘要:
The present invention provides pseudotyped retroviral vectors and packaging systems and methods of using such vectors for retroviral-mediated gene transfer. In particular, the present invention provides a retroviral packaging system that comprises at least two vectors: a first vector comprising a gag, a pol, or gag and pol genes; and a second vector comprising a functionally modified or heterologous envelope gene, for example, a baculovirus envelope gene.
摘要:
Lentiviral vectors modified at the 5null LTR or both the 5null and 3null LTR's are useful in the production of recombinant lentivirus vectors. Such vectors can be produced in the absence of a functional tat gene. Multiple transformation of the host cell with the vector carrying the transgene enhances virus production.
摘要:
The present invention is directed to novel replication-deficient adenoviral vectors characterized in that they harbor at least two lethal early region gene deletions (E1 and E4) that normally transcribe adenoviral early proteins. These novel recombinant vectors find particular use in human gene therapy treatment whereby the vectors additionally carry a transgene or therapeutic gene that replaces the E1 or E4 regions. The present invention is further directed to novel packaging cell lines that are transformed at a minimum with the adenoviral E1 and E4 gene regions and function to propagate the above novel replication-deficient adenoviral vectors.
摘要:
Novel multispecific chimeric receptor DNA sequences, expression cassettes and vectors containing these sequences as well as cells containing the chimeric DNA and novel chimeric receptor proteins expressed from the sequences are provided in the present invention. The novel multispecific chimeric receptor DNA and amino acid sequences comprise at least three domains that do not naturally exist together: (1) a multispecific binding domain comprising at least two extracellular inducer-responsive clustering domains which serves to bind at least one specific inducer molecule, (2) a transmembrane domain, which crosses the plasma membrane, and (3) either a proliferation signaling domain that signals the cell to divide, or an effector function signaling domain which directs a host cell to perform its specialized function. Optionally, all the multispecific chimeric receptors may contain one or more intracellular inducer-responsive clustering domains attached to one or more of the cytoplasmic signaling domains or the transmembrane domain. The present invention also relates to novel hybrid multispecific chimeric receptors comprising at least one proliferation signaling domain and at least one effector function signaling domain together on the multispecific receptor molecule. The present invention further relates to therapeutic methods and strategies that employ the cells expressing these novel chimeric receptors for the treatment of cancer, infectious disease and autoimmune disease which may have greater therapeutic benefit over a combination of drug therapies.
摘要:
The present invention is directed to novel chimeric proliferation receptor proteins and DNA sequences encoding these proteins where the chimeric proteins are characterized in three general categories. In one category, the novel chimeric proteins comprise at least three domains, namely, an extracellular inducer-responsive clustering domain capable of binding an extracellular inducer that transmits a signal to a proliferation signaling domain, a transmembrane domain and a proliferation signaling domain that signals a host cell to divide. In the second category, the novel chimeric proteins comprise at least two domains, namely, an intracellular inducer-responsive clustering domain capable of binding an intracellular inducer and a proliferation signaling domain that signals the cell to divide. In yet a third category, a novel hybrid chimeric protein receptor is contemplated that contains an intracellular or extracellular inducer domain, a transmembrane domain, a proliferation signaling domain and an effector signaling domain in a single chain molecule. Whether the binding domain is intracellular or extracellular, the binding of inducer to these novel chimeric receptor proteins induces the clustering of the binding domains to each other and further signals the cell to proliferate, and optionally, signal an effector function. The present invention further relates to expression vectors containing the nucleic acids encoding the novel chimeric receptors, cells expressing the novel chimeric receptors and therapeutic methods of using cells expressing these novel receptors for the treatment of cancer, infectious disease and autoimmune diseases, for example.
摘要:
Endothelial cells transduced with genetic material encoding a polypeptide or protein of interest and, optionally, a selectable marker, as well as methods for making and using the transduced endothelial cells are disclosed. Such endothelial cells are useful in improving the performance of vascular grafts and in delivering the encoded polypeptide or protein, such as an enzyme, a hormone, a receptor or a drug, to an individual.