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Detection and preliminary characterization of CD8+T lymphocytes specific for Wilms' tumor antigen in patients with non-Hodgkin lymphoma.
- Source :
- Leukemia & Lymphoma; Nov2013, Vol. 54 Issue 11, p2490-2499, 10p
- Publication Year :
- 2013
-
Abstract
- Wilms' tumor antigen (WT1) is overexpressed in many different solid tumors and hematologic malignancies. However, little is known about WT1 expression or WT1-specific immune responses in patients with non-Hodgkin lymphoma (NHL). In a cross-sectional survey study, we investigated the immune recognition of WT1 by patients with NHL. Utilizing a WT1 overlapping peptide library, we discovered that a large percentage of patients with NHL of all grades maintain WT1-specific T cells. Ex vivo frequencies of these T cells measured from unfractionated samples by the CD137 activation marker assay were high in many patients (some > 1% CD8+). Using standard in vitro techniques we discovered that they were cytotoxic to WT1 peptide library-loaded T2 cells and WT1 antigen-primed autologous Epstein-Barr virus-transformed B cell lines (EBV-LCLs) and expressed interferon gamma (IFN-γ). In addition, we detected WT1 mRNA transcripts in diseased lymph node tissues of patients with NHL utilizing real-time quantitative polymerase chain reaction (RT-qPCR) technology. These results are the first example of strong T cell reactivity against WT1 in patients with NHL which also demonstrate strong cytotoxicity against peptide-loaded tumor cells. The potential for developing WT1 as a target for immunotherapy in NHL deserves further exploration. [ABSTRACT FROM AUTHOR]
- Subjects :
- ANTIGENS
NEPHROBLASTOMA
RENAL cancer
TUMORS in children
LYMPHOMAS
T cells
CD8 antigen
Subjects
Details
- Language :
- English
- ISSN :
- 10428194
- Volume :
- 54
- Issue :
- 11
- Database :
- Complementary Index
- Journal :
- Leukemia & Lymphoma
- Publication Type :
- Academic Journal
- Accession number :
- 90562681
- Full Text :
- https://doi.org/10.3109/10428194.2013.783910