Skip to main content
Aller à la page d’accueil de la Commission européenne (s’ouvre dans une nouvelle fenêtre)
français fr
CORDIS - Résultats de la recherche de l’UE
CORDIS
Contenu archivé le 2024-05-14

PROTECTION OF NEONATAL PIGS FROM VIRUS DISEASE : TARGETED INTRACELLULAR IMMUNIZATION WITH DEFECTIVE VIRAL GENOMES

Objectif



Gastrointestinal infections are common in new-born animals in intensive animal husbandry, and pose a serious economic threat. While antibacterial agents have been very effective, antivirals have met with ! limited success. This project proposes to use a procedure known as intracellular immunization, in'which neonatal pigs will be inoculated with defective (non-infectious) viral genomes in order to prevent enteric infections. These defective genomes are small (<=10 kb) and have the unique ability of interfering at the molecular level with (i.e. inhibiting) the multiplication of homologous infectious virus, and are known as defective interfering (DI) genomes. In vivo they need be p resent only in a sufficient number of cells to reduce infection and hence allow the host's defence mechanisms to overcome the virus.
Intracellular immunization will be specifically tarqeted to tissues normally infected by the viral pathogen, using virus-like particles (VLPS) with envelope proteins that confer the required cell tropism.
Benefit will be mediated by two complementary mechanisms: (1) direct interference with virus multiplication in the cell which is effective immediately after administration and (2) induction of a conventional protective immune response which is effective after a few days, in a; manner analogous to human neonates who can be successively immunized by gut infection with oral poliovirus vaccine. Intracellular immunization will be developed for viruses of neonatal pigs . transmissible gast-; enteritis viru- (TGEV) and porcine epidemic diarrhoea virus (PEDV). Inj 1994 these viruses were major contributors to enteric and respiratory ! infections which cost the EU about 766 million ECU, (51,*' of an industry worth 15000 million ECU, and comparable to that of North America). In addition there is a major social impact as these losses are borne by small farmers rather than powerful industrial concerns. VLPs will be developed that target cloned TGEV DI RNA to pig enteric tract epithelial cells in culture. The final goal is the successful oral administration of this material to combat TGEV-induced disease in neonatal pigs. Successful development requires a transnational combination of the complementary expertises of four research groups and a company to (1) understand the molecular basis of intracellular immunity induced by DI virus genomes; (2) design VLPs to target the interfering molecules to tissues infected by the pathogen. (3) express interference with TGEV replication that is active in porcine gut! epithelial cells and (4) evaluate protection in neonatal pigs against TGEV and PEDV. This technology will have many applications as a novel, practical, effective, and safe means for controlling and preventing virus diseases of live-stock in the EU. North America and world-wide.

Champ scientifique (EuroSciVoc)

CORDIS classe les projets avec EuroSciVoc, une taxonomie multilingue des domaines scientifiques, grâce à un processus semi-automatique basé sur des techniques TLN. Voir: Le vocabulaire scientifique européen.

Vous devez vous identifier ou vous inscrire pour utiliser cette fonction

Thème(s)

Les appels à propositions sont divisés en thèmes. Un thème définit un sujet ou un domaine spécifique dans le cadre duquel les candidats peuvent soumettre des propositions. La description d’un thème comprend sa portée spécifique et l’impact attendu du projet financé.

Appel à propositions

Procédure par laquelle les candidats sont invités à soumettre des propositions de projet en vue de bénéficier d’un financement de l’UE.

Données non disponibles

Régime de financement

Régime de financement (ou «type d’action») à l’intérieur d’un programme présentant des caractéristiques communes. Le régime de financement précise le champ d’application de ce qui est financé, le taux de remboursement, les critères d’évaluation spécifiques pour bénéficier du financement et les formes simplifiées de couverture des coûts, telles que les montants forfaitaires.

CSC - Cost-sharing contracts

Coordinateur

C.S.I.C.
Contribution de l’UE
Aucune donnée
Adresse
CAMPUS UNIVERSIDAD AUTONOMA / CANTOBLANCO
28049 MADRID
Espagne

Voir sur la carte

Coût total

Les coûts totaux encourus par l’organisation concernée pour participer au projet, y compris les coûts directs et indirects. Ce montant est un sous-ensemble du budget global du projet.

Aucune donnée

Participants (4)

Mon livret 0 0