EBV-specific CD4+ T cell clones exhibit vigorous allogeneic responses

Alloreactive T cells play a key role in mediating graft-vs-host disease and allograft rejection, and recent data suggest that most T cell alloreactivity resides within the CD4 T cell subset. Particularly, T cell responses to herpesvirus can shape the alloreactive repertoire and influence transplantation outcomes. In this study, we describe six distinct EBV-specific CD4(+) T cell clones that cross-reacted with EBV-transformed lymphoblastoid cell lines (LCLs), dendritic cells, and endothelial cells expressing MHC class II alleles commonly found in the population. Allorecognition showed exquisite MHC specificity. These CD4(+) T cell clones efficiently killed dendritic cells or LCLs expressing the cross-reactive allogeneic MHC class II molecules, whereas they did not kill autologous LCLs. Endothelial cells expressing the proper allogeneic MHC molecules were poorly killed, but they induced high-level TNF-alpha production by the EBV-specific CD4(+) T cell clones. As already proposed, the strong alloreactivity toward LCLs suggest that these cells could be used for selective depletion of alloreactive T cells.

Medienart:

Artikel

Erscheinungsjahr:

2006

Erschienen:

2006

Enthalten in:

Zur Gesamtaufnahme - volume:177

Enthalten in:

Journal of immunology (Baltimore, Md. : 1950) - 177(2006), 3 vom: 01. Aug., Seite 1427-33

Sprache:

Englisch

Beteiligte Personen:

Landais, Elise [VerfasserIn]
Morice, Alexis [VerfasserIn]
Long, Heather M [VerfasserIn]
Haigh, Tracey A [VerfasserIn]
Charreau, Béatrice [VerfasserIn]
Bonneville, Marc [VerfasserIn]
Taylor, Graham S [VerfasserIn]
Houssaint, Elisabeth [VerfasserIn]

Themen:

Isoantigens
Journal Article
Research Support, Non-U.S. Gov't

Anmerkungen:

Date Completed 06.09.2006

Date Revised 16.05.2019

published: Print

Citation Status MEDLINE

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

NLM164213937