Analysis of dendritic cell subpopulations in follicular lymphoma with respect to the tumor immune microenvironment.

Abstract:

:The immune cell composition of the follicular lymphoma (FL) tumor microenvironment is increasingly recognized as an important determinant for clinical outcome. Here, we explored frequency and distribution of dendritic cell (DC) subtypes in relation to regulatory T cells (Treg) by immunohistochemistry in lymph node biopsies from patients with de novo FL. We found that neoplastic follicles contained lower DC and higher Treg frequencies than hyperplastic follicles in control lymph nodes. Treg numbers particularly correlated with the subset of conventional CD11c(+ )DCs. Additionally, both a high intra- to interfollicular ratio of CD11c(+ )DCs and increased intrafollicular Treg frequencies were associated with decreased overall survival. This suggests that functional interactions between these cells may be relevant for FL progression/recurrence. The presence of CD11c(+ )DCs in the tumor microenvironment may assist tumor infiltration by Tregs, thus contributing to the suppression of an otherwise beneficial T-cell-dominated FL microenvironment.

journal_name

Leuk Lymphoma

journal_title

Leukemia & lymphoma

authors

Chevalier N,Mueller M,Mougiakakos D,Ihorst G,Marks R,Schmitt-Graeff A,Veelken H

doi

10.3109/10428194.2015.1135432

subject

Has Abstract

pub_date

2016-09-01 00:00:00

pages

2150-60

issue

9

eissn

1042-8194

issn

1029-2403

journal_volume

57

pub_type

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