Open AccessSkin-homing CD8+ T lymphocytes Show Preferential Growth in vitro and Suppress CD4+ T-cell Proliferation in Patients with Early Stages of Cutaneous T-cell Lymphoma
Author(s) -
Kristian ThestrupPedersen,
Ranjit S. Parhar,
Kaida Wu,
Per-Anders Bertilsson,
Brian F. Meyer,
Sayeda Abu-Amero,
Bo Hainau,
Azian Azamimi Abdullah,
Abdullah Alfadley,
Issam Hamadah,
Abdulmajeed Alajlan,
Khalid Al-Hussein,
Futwan AlMohanna
Publication year - 2007
Publication title -
acta dermato-venereologica
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.982
H-Index - 83
eISSN - 1651-2057
pISSN - 0001-5555
DOI - 10.2340/00015555-0206
Subject(s) - cutaneous t cell lymphoma , cd8 , t cell , cytotoxic t cell , lymphoma , immunology , t lymphocyte , cell growth , biology , interleukin 2 , mycosis fungoides , cancer research , in vitro , cytokine , immune system , biochemistry , genetics
A total of 27 T-lymphocyte cell strains were established from skin biopsies of 24 patients with various stages of cutaneous T-cell lymphoma (CTCL) by addition of the T-cell growth factors interleukin (IL)-2 and IL-4. Cellular proliferation and phenotypic changes were measured over 3 months in culture, and T-cell clones were studied using T-cell receptor-? re-arrangement techniques. An average outgrowth of 134 million T-lymphocytes from a 4-mm skin biopsy was observed over 2 months. Initially, most T-cells expressed the CD4+ phenotype. In 17 cell strains from patients with early CTCL a statistically significant predominance of CD8+ T-lymphocytes developed over 8-weeks' culture, indicating that CD8+ T-cells controlled the growth of CD4+ T cells, whereas CD4+ T-cells were predominant in cell strains from advanced CTCL (p <0.05). TCR-? re-arrangement studies revealed, on average, 12 T-cell clones per cell strain, which was reduced over time to 6 T-cell clones per cell strain. Lymphocytes from peripheral blood could kill lymphocytes from an autologous cell strain, suggesting the presence of autoreactive cytotoxic T-cells. Our study suggests how skin-homing CD8+ T-lymphocytes from patients with early stage CTCL can suppress the in vitro growth of skin-homing CD4+ T-lymphocytes, indicating immune surveillance.