摘要:
The present invention provides methods and compositions for inducing an immune response that confers dual protection against infections by either or both of a rabies virus and a filovirus, and/or which can be used therapeutically for an existing infection with rabies virus and/or a filovirus to treat at least one symptom thereof and/or to neutralize or clear the infecting agents. In particular, the present invention provides a recombinant rabies virus vector omprising a nucleotide sequence encoding at least one filovirus glycoprotein or an immunogenic fragment thereof, as well as pharmaceutical compostions comprising the vaccine vectors.
摘要:
The present invention provides methods and compositions for inducing an immune response that confers dual protection against infections by either or both of a rabies virus and a filovirus, and/or which can be used therapeutically for an existing infection with rabies virus and/or a filovirus to treat at least one symptom thereof and/or to neutralize or clear the infecting agents. In particular, the present invention provides a recombinant rabies virus vector comprising a nucleotide sequence encoding at least one filovirus glycoprotein or an immunogenic fragment thereof, as well as pharmaceutical compositions comprising the vaccine vectors.
摘要:
Replication-competent recombinant rhabdoviruses that lack a functional glycoprotein gene and express at least one foreign polypeptide such as a celluar receptor for another virus in their viral envelopes are useful in the treatment of pathogenic viruses. In one embodiment, a recombinant vesicular stomatitis virus (VSV) lacking its glycoprotein (G) gene and expressing instead the HIV receptor and a coreceptor is employed in a method for treating persons infected with HIV. The recombinant virus is defective for entry into normal cells but is able to control HIV infection in a T cell line by replicating in, and killing, HIV-infected cells.
摘要:
Live, attenuated recombinant rabies virus vaccines are generated using reverse genetics to combine the antigenic determinants that render the rabies virus non-pathogenic with the determinants that are responsible for the elicitation of an effective anti-rabies immune response. These vaccines do not affect the antigenic, and therefore the immunogenic, properties of the virus. The present invention further relates to recombinant rabies virus vaccines that express a pro-apoptotic protein, such as cytochrome c, to increase the capacity to induce apoptosis, thereby enhancing the protective immunity against rabies. This new generation of live rabies virus vaccines represents a safe and effective approach to the eradication of rabies in wildlife, and subsequently humans and livestock.
摘要:
Recombinant rabies viruses in which the arginine residue of the glycoprotein (G) at amino acid position 333 is exchanged, renders these viruses nonpathogenic for immunocompetent mammals regardless of the route of infection. Some of these recombinant rabies viruses after several serial virus passages in newborn mice can become pathogenic for adult mice. The reversion to the pathogenic phenotype is associated with a thymidine to adenosine mutation (T→A) at position 639 of the G gene, which results in an asparagine to lysine exchange at position 194 of G. The codon at position 637-639 was changed by site directed mutagenesis to replace asparagine at position 194 by an amino acid that minimized the possibility for an Asn→Lys exchange at amino acid position 194 of G and prevents reversion to a pathogenic form of the virus.
摘要:
An electrical connection in which a flexible, elastic conductor track carrier is affixed by a connecting end to an electrical component and embedded in potting compound. To prevent breakage at the fastening point at the transition from the potting compound to the outside, the conductor track carrier is reinforced with additional layers of insulating material.
摘要:
The invention relates to a fuel injector comprising a nozzle retainer or an injector body, a valve body and a nozzle body, in which a preferably needle-shaped injection valve member is arranged to be vertically movable, said member releasing or closing at least one injection port leading to a combustion chamber of an internal combustion engine depending on the pressure relief of or the pressure load on a control chamber. The invention is characterized in that a valve comprising a preferably ball-shaped valve element is arranged in the nozzle retainer or in the injector body for the pressure relief of the control chamber.
摘要:
A sliding block for a piston of a hydraulic piston machine, includes a concave recess to receive a piston head and a sliding surface to support the piston. A lubricant channel passes through the sliding block from the concave recess to the sliding surface, and the concave recess transforms with a constant tangent i.e. without kinking into a transition segment of a constantly narrowing taper segment of the lubricant channel. The transition segment is convex.
摘要:
A sliding block for a piston of a hydraulic piston machine, includes a concave recess to receive a piston head and a sliding surface to support the piston. A lubricant channel passes through the sliding block from the concave recess to the sliding surface, and the concave recess transforms with a constant tangent i.e. without kinking into a transition segment of a constantly narrowing taper segment of the lubricant channel. The transition segment is convex.
摘要:
The invention relates to a fuel injector comprising a nozzle retainer or an injector body, a valve body and a nozzle body, in which a preferably needle-shaped injection valve member is arranged to be vertically movable, said member releasing or closing at least one injection port leading to a combustion chamber of an internal combustion engine depending on the pressure relief of or the pressure load on a control chamber. The invention is characterized in that a valve comprising a preferably ball-shaped valve element is arranged in the nozzle retainer or in the injector body for the pressure relief of the control chamber.