Cytokine production by CD4+ T-cells responding to antigen presentation by melanoma cells.

Abstract:

:Melanoma cells are unusual because, unlike most epithelial tumours, constitutive expression of HLA class II antigens is common. We have previously demonstrated that a peptide-specific CD4+ T-cell clone proliferates briskly in response to peptide and HLA class II expressing melanoma cell lines derived from metastases. Here we demonstrate that these CD4+ T-cells secrete large amounts of interferon-gamma (IFNgamma) and interleukin-10 (IL10), and insignificant quantities of IL2 or IL4, in response to peptide presentation by both melanoma and autologous B-cells. T-cells produced more IL10 when responding to peptide presentation by melanoma cells compared with B-cells, and less IFNgamma (P<0.01). Addition of IL12 did not alter the cytokines produced but increased the T-cell production of both, especially the production of IL10 in response to peptide presentation by melanoma cells. Our data suggest that differential cytokine production by CD4+ T-cells in response to peptide presentation by HLA class II expressing tumour cells may contribute to tolerance to tumour antigens.

journal_name

Melanoma Res

journal_title

Melanoma research

authors

Brady MS,Eckels DD,Lee F,Ree SY,Lee JS

doi

10.1097/00008390-199904000-00010

subject

Has Abstract

pub_date

1999-04-01 00:00:00

pages

173-80

issue

2

eissn

0960-8931

issn

1473-5636

journal_volume

9

pub_type

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