Expression of T-plastin, FoxP3 and other tumor-associated markers by leukemic T-cells of cutaneous T-cell lymphoma

Elisabetta Capriotti, Eric C. Vonderheid, Christopher J. Thoburn, Mariusz Wasik, David W. Bahler, Allan D. Hess

Research output: Contribution to journalArticlepeer-review

Abstract

Peripheral blood cells from 28 patients with leukemic cutaneous T-cell lymphoma including 25 patients with Sezary syndrome were evaluated for expression of regulatory T-cell-associated markers (FoxP3, CD25, CTLA-4, neurophilin-1), T-cell activation markers (CD28 and its ligands B7.1 and B7.2) and NK cell-associated markers (NKG2D and its ligands Mic-A and Mic-B) using real-time quantitative polymerase chain reaction. T-plastin served as a positive genetic marker, and its expression correlated to blood tumor burden. More than 90% of samples had transcripts for CD28 and Mic-B, but less than 30% of samples expressed FoxP3, CTLA-4 and CD25. Expression of Mic-B by neoplastic cells could provide another mechanism to inhibit anti-tumor immune responses. FoxP3 expression correlated with a poor prognosis. Although the underlying mechanisms accounting for this correlation remain unclear, the expression of the Foxp3 and CTLA-4 regulatory elements indicates that a subset of leukemic cases displays a regulatory T-cell phenotype.

Original languageEnglish (US)
Pages (from-to)1190-1201
Number of pages12
JournalLeukemia and Lymphoma
Volume49
Issue number6
DOIs
StatePublished - Jun 1 2008

Keywords

  • CD28
  • FoxP3
  • Lymphoma
  • Mic-B
  • Regulatory T-cell
  • Sezary syndrome
  • T-plastin

ASJC Scopus subject areas

  • Hematology
  • Oncology
  • Cancer Research

Fingerprint Dive into the research topics of 'Expression of T-plastin, FoxP3 and other tumor-associated markers by leukemic T-cells of cutaneous T-cell lymphoma'. Together they form a unique fingerprint.

Cite this