A quantitative assay for Epstein-Barr Virus-specific immunity shows interferon-gamma producing CD8+ T cells increase during immunosuppression reduction to treat posttransplant lymphoproliferative disease.
Transplantation
; 84(11): 1534-9, 2007 Dec 15.
Article
em En
| MEDLINE
| ID: mdl-18091531
ABSTRACT
Reduction of immunosuppression (RIS) to allow development or recovery of Epstein-Barr virus (EBV) immunity can be used to treat EBV-associated posttransplant lymphoproliferative disease (PTLD). Quantification of EBV-specific immunity would help assessment of the efficacy of RIS therapy. Use of intracellular cytokine staining and analysis by flow cytometry to monitor functional EBV-specific T-cell immunity was evaluated in healthy volunteers. The technique was then used to monitor EBV immunity in nine renal transplant patients with PTLD during RIS. The number of interferon (IFN)-gamma producing CD8+ T cells specific for EBV increased distinctly before regression of EBV+ PTLD tumors occurred. The findings confirm the importance of IFN-gamma producing CD8+ T cells in controlling the malignant EBV-transformed B cells of PTLD. The assay effectively quantified EBV immunity during RIS in transplant patients with PTLD.
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Base de dados:
MEDLINE
Assunto principal:
Interferon gama
/
Herpesvirus Humano 4
/
Linfócitos T CD8-Positivos
/
Imunoadsorventes
/
Transtornos Linfoproliferativos
Idioma:
En
Ano de publicação:
2007
Tipo de documento:
Article