Currently licensed live attenuated canine distemper vaccines are highly effective. However, they retain the potential to cause disease in very susceptible species. Researchers at Paul-Ehrlich-Institut and Thomas Jefferson University have generated an inactivated candidate vaccine that induces protective immunity against both rabies and canine distemper and has an excellent safety profile. The candidate vaccine consists of a mix of two recombinant inactivated rabies viruses that carry either one of the two canine distemper glycoproteins in addition to its own glycoprotein.The results are published in the online edition of Journal of Virology 1 February 2016.
Rabies and canine distemper are among the most dangerous and lethal viral diseases afflicting carnivores. Rabies can also be transmitted to humans via bite from rabies-infected animals. It attacks the nervous system and can be deadly if not treated immediately.
Cells infected with canine distemper virus fuse to neighboring uninfected cells to form syncytia. Antibodies against canine distemper virus are used to stain the infected cells with a red dye
Rabies vaccines contain inactivated virus particles and have an excellent stability and safety profile. For vaccination against canine distemper virus, which causes a measles-like disease in its hosts, live-attenuated viruses are used. These vaccine viruses replicate in the vaccinated animals to a certain extent and can lead to severe disease in highly susceptible species.
Prof. Dr. Veronika von Messling's group at the Veterinary Medicine Division, Paul-Ehrlich-Institut, in collaboration with Dr. Matthias Schnell's group at Thomas Jefferson University genetically engineered the rabies virus vaccine strain to carry one of the canine distemper virus glycoproteins in addition to its own glycoprotein. The protective immune response is directed against these proteins. Candidate vaccines were then produced following the purification and inactivation protocols used for rabies vaccines.
The researchers first demonstrated that a single shot was sufficient to elicit protective rabies antibody titers in ferrets. However, protection against canine distemper was only achieved when animals were immunized with a mix of viruses carrying both canine distemper virus glycoproteins. The researchers conclude that immune responses against both glycoproteins are necessary to protect from canine distemper.
"Our rabies-based vector is a promising platform for the development of new morbillivirus vaccines" explains von Messling. "It eliminates the risk for vaccine-induced disease and at the same time greatly increases the temperature stability compared to live-attenuated morbillivirus vaccines."
Da Fontoura Budaszewski R, Hudacek A, Sawatsky B, Krämer B, Xiangping Y, Schnell MJ, von Messling V (2017): Inactivated Recombinant Rabies Viruses Displaying Canine Distemper Virus Glycoproteins Induce Protective Immunity Against Both Pathogens.
J Virol Feb 01 [Epub ahead of print].
The Paul-Ehrlich-Institut, the Federal Institute for Vaccines and Biomedicines, in Langen near Frankfurt/Main is a senior federal authority reporting to the Federal Ministry of Health (Bundesministerium für Gesundheit, BMG). It is responsible for the research, assessment, and marketing authorisation of biomedicines for human use and immunological veterinary medicinal products. Its remit also includes the authorisation of clinical trials and pharmacovigilance, i.e. recording and evaluation of potential adverse effects.
Other duties of the institute include official batch control, scientific advice and inspections. In-house experimental research in the field of biomedicines and life science form an indispensable basis for the manifold tasks performed at the institute.
The Paul-Ehrlich-Institut, with its roughly 800 members of staff, also has advisory functions nationally (federal government, federal states (Länder)), and internationally (World Health Organisation, European Medicines Agency, European Commission, Council of Europe etc.).
http://jvi.asm.org/content/early/2017/01/26/JVI.02077-16.abstract - Abstract of the publicaton
http://www.pei.de/EN/information/journalists-press/press-releases/2017/03-inacti... - this press release on the Paul-Ehrlich-Institut Website
Dr. Susanne Stöcker | idw - Informationsdienst Wissenschaft
Millions through license revenues
27.04.2017 | Rheinische Friedrich-Wilhelms-Universität Bonn
New High-Performance Center Translational Medical Engineering
26.04.2017 | Fraunhofer ITEM
More and more automobile companies are focusing on body parts made of carbon fiber reinforced plastics (CFRP). However, manufacturing and repair costs must be further reduced in order to make CFRP more economical in use. Together with the Volkswagen AG and five other partners in the project HolQueSt 3D, the Laser Zentrum Hannover e.V. (LZH) has developed laser processes for the automatic trimming, drilling and repair of three-dimensional components.
Automated manufacturing processes are the basis for ultimately establishing the series production of CFRP components. In the project HolQueSt 3D, the LZH has...
Reflecting the structure of composites found in nature and the ancient world, researchers at the University of Illinois at Urbana-Champaign have synthesized thin carbon nanotube (CNT) textiles that exhibit both high electrical conductivity and a level of toughness that is about fifty times higher than copper films, currently used in electronics.
"The structural robustness of thin metal films has significant importance for the reliable operation of smart skin and flexible electronics including...
The nearby, giant radio galaxy M87 hosts a supermassive black hole (BH) and is well-known for its bright jet dominating the spectrum over ten orders of magnitude in frequency. Due to its proximity, jet prominence, and the large black hole mass, M87 is the best laboratory for investigating the formation, acceleration, and collimation of relativistic jets. A research team led by Silke Britzen from the Max Planck Institute for Radio Astronomy in Bonn, Germany, has found strong indication for turbulent processes connecting the accretion disk and the jet of that galaxy providing insights into the longstanding problem of the origin of astrophysical jets.
Supermassive black holes form some of the most enigmatic phenomena in astrophysics. Their enormous energy output is supposed to be generated by the...
The probability to find a certain number of photons inside a laser pulse usually corresponds to a classical distribution of independent events, the so-called...
Microprocessors based on atomically thin materials hold the promise of the evolution of traditional processors as well as new applications in the field of flexible electronics. Now, a TU Wien research team led by Thomas Müller has made a breakthrough in this field as part of an ongoing research project.
Two-dimensional materials, or 2D materials for short, are extremely versatile, although – or often more precisely because – they are made up of just one or a...
20.04.2017 | Event News
18.04.2017 | Event News
03.04.2017 | Event News
27.04.2017 | Health and Medicine
27.04.2017 | Information Technology
26.04.2017 | Materials Sciences