摘要:
The present invention relates to gene therapy systems designed for the delivery of a therapeutic product to a subject using replication-defective virus composition(s) engineered with a built-in safety mechanism for ablating the therapeutic gene product, either permanently or temporarily, in response to a pharmacological agent—preferably an oral formulation, e.g., a pill. The invention is based, in part, on the applicants' development of an integrated approach, referred to herein as “PITA” (Pharmacologically Induced Transgene Ablation), for ablating a transgene or negatively regulating transgene expression. In this approach, replication-deficient viruses are used to deliver a transgene encoding a therapeutic product (an RNA or a protein) so that it is expressed in the subject, but can be reversibly or irreversibly turned off by administering the pharmacological agent; e.g., by administration of a small molecule that induces expression of an ablator specific for the transgene or its RNA transcript.
摘要:
A capacitor, and methods of its manufacture, having improved capacitance efficiency which results from increasing the effective area of an electrode surface are disclosed. An improved “three-dimensional” capacitor may be constructed with electrode layers having three-dimensional aspects at the point of interface with a dielectric such that portions of the electrode extend into the dielectric layer.
摘要:
A recombinant vector comprises simian adenovirus sequences and a heterologous gene under the control of regulatory sequences. A cell line which expresses simian adenovirus gene(s) is also disclosed. Methods of using the vectors and cell lines are provided.
摘要:
A recombinant vector comprises simian adenovirus SAdV-39, -25.2, -26, -30, -37, and -38 sequences and a heterologous gene under the control of regulatory sequences. A cell line which expresses simian adenovirus SAdV-39, -25.2, -26, -30, -37, and -383 gene(s) is also disclosed. Methods of using the vectors and cell lines are provided.
摘要:
A method for detecting and isolating AAV sequences in a sample of DNA obtained from tissue or cells is provided, which sample contains DNA and proviral AAV. The method involves subjecting the sample containing DNA to amplification via polymerase chain reaction (PCR) using a first set of primers which specifically amplify a first AAV region. The first AAV region is characterized by having at least 250 nucleotides of AAV capsid nucleic acid sequence, a variable sequence flanked by a sequence of at least 18 nucleotides at the 5′ end of the first AAV region and a sequence of at least 18 nucleotides at the 3′ end of the first AAV region. Each of the 5′ and 3′ at least 18 nucleotides is the same over at least 9 consecutive nucleotides relative to corresponding sequences in an alignment of at least two AAV serotypes. Each of the sets of primers consist of a 5′ primer and a 3′ primer. The method is further useful for identifying AAV sequences in the sample by the presence of amplified proviral AAV sequences.
摘要:
Chimpanzee serotype C68 proteins, peptides, and polypeptide are provided. Also provided are novel adenoviruses derived from these proteins, as well as compositions containing these proteins and methods of using same for immunization and therapy. Further, a rapid method for screening recombinant transformants using a visually detectable method is described.
摘要:
A method for producing recombinant adeno-associated virus in the absence of contaminating helper virus or wild-type virus involves culturing a mammalian host cell containing an rAd/AAV hybrid virus, an AAV rep sequence and an AAV cap sequence under the control of regulatory sequences directing expression thereof. The rAd/AAV hybrid virus contains a rAAV construct to be packaged into an AAV virion in an backbone containing the adenoviral sequences necessary to express E1a and E1b gene products and to permit replication of the hybrid virus. The method of the invention permits replication of the hybrid virus and production of rAAV virion in this host cell in the absence of a helper virus and obviates a subsequent purification step to purify rAAV from contaminating virus.
摘要:
An artificial AAV capsid comprising a heterologous conducting airway targeting sequence is provided. The artificial AAV is useful as a targeting moiety, for delivery of heterologous molecules which are associated therewith. The artificial AAV is also useful in the generation of AAV vectors having the artificial capsid. Also described are methods of modifying the native tropism and transduction efficiency of vectors by improving and/or ablating their ability to transduce conducting airway cells. Methods of targeting conducting airway cells and delivering therapeutic and other molecules thereto are also provided.
摘要:
A recombinant vector comprises simian adenovirus 28, simian adenovirus 27, simian adenovirus 32, simian adenovirus 33, and/or simian adenovirus 35 sequences and a heterologous gene under the control of regulatory sequences. A cell line which expresses one or more simian adenovirus-28, -27, -32, -33, or -35 genes is also disclosed. Methods of using the vectors and cell lines are provided.
摘要:
A recombinant vector comprises simian adenovirus sequences and a heterologous gene under the control of regulatory sequences. A cell line which expresses simian adenovirus gene(s) is also disclosed. Methods of using the vectors and cell lines are provided.