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

Tolerance mechanisms and germinal center reactions in autoimmunity of rheumatoid inflammation

Objectif



Rheumatoid arthritis (RA) is a serious chronic disease affecting a large number of patients and only symptomatic therapies are currently available. The majority of RA patients have elevated plasma levels of the rheumatoid factor (RF) autoantibodies directed to the Fc fragment of IgG. Prof. J. Natvig and coworkers have recently detected distinct Iymphoid structures in RA synovial tissues which have very close immunohistological characteristics to secondary follicles such as the presence of rnantle zone and germinal centers (GC) seen in secondary Iymphoid organs. The GC micro environments are intimately associated with clonal expansion and selection of B cells, sornatic hypermutation in B cell Ig V-region genes and induction of differentiation to memory B cells undergoing isotype switching and somatic mutations. The presence of such 'ectopic' Iymphoid tissue could be of crucial importance in the generation of auto-immune reactions. We intend to investigate whether the immune processes in GC from RA synovial tissues differ from those seen in normal, healthy Iymphoid tissue. We want study the germinal center formation and specially focus on the B and T Iymphocyte interactions and Follicular Dendritic Cells. FDC are a non lymphoid cells closely associated with B cells and encountered only in primary and secondary follicles. We want determine the relationship between these cells and B cells such as adhesion molecule expression and cytokine production. We want also study the features of GC T cells from RA synovial tissues (proportion. phenotype, CD57+, CD40L expression, etc). We want finally determine the degree of mutation and clonality in B-lymphocytes from GC identified in rheumatoid synovial tissues and studv how somatic mutations correlate with phenotypically separated B cells in rheumatoid synovial tissue as compared with normal secondary Iymphoid tissue.
Training content (objective, benefit and expected impact)
I did my Ph.D. in Immunology at Lund Universit -, Sweden, with Prof. Tomas Leanderson as supervisor The subject for the thesis was regulation of somatic mutation in immunoglobulin (Ig) genes. We have recently developed a system w ere somatic mutation can be supported in vitro in B cells from immunized mice. I have a long experience in amplifying and sequence V genes both directly from PCR and after cloning, I have also an extended knowledge of in vitro culturing of B cells However. I do not have the training in examine the synovial tissues in RA patients and the expcriencc in scparating different B cell developmental stages. As a scientist I would benefit tremendously from doing a post-doc in a laboratory w ith a different aspect on a similar scientific problem. It would strengthen my skills. knowledge and mv ability to do competitive science in the future. My expericnce gained in Sweden and Japan, particularly in the areas of expression systems and mutation processes in B cells would be of great benefit to the host laboratory. The results obtained will permit us to understand the defective mechanisms in the GC from RA svnovial tissues and identifv the factors which control RF and other autoantibodv production With this knowledge, we may bc able to address specific points of attack in the devclopment of a rational therapy and prophylaxis for this destructive disease.

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

Programme(s)

Programmes de financement pluriannuels qui définissent les priorités de l’UE en matière de recherche et d’innovation.

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.

RGI - Research grants (individual fellowships)

Coordinateur

University of Oslo
Contribution de l’UE
Aucune donnée
Adresse
1,Fr. Qvamsgt.
0172 Oslo
Norvège

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 (1)

Mon livret 0 0