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Table of Contents
Vol. 51, No. 4, 2001
Issue release date: June 2001
Section title: Original Paper
Gynecol Obstet Invest 2001;51:254–261
(DOI:10.1159/000058060)

Phenotypic and Functional Analysis of Tumor-Infiltrating Lymphocytes Compared with Tumor-Associated Lymphocytes from Ascitic Fluid and Peripheral Blood Lymphocytes in Patients with Advanced Ovarian Cancer

Santin A.D.a,d · Hermonat P.L.a · Ravaggi A.a,d · Bellone S.a,d · Roman J.J.a · Smith C.V.a · Pecorelli S.d · Radominska-Pandya A.b · Cannon M.J.c · Parham G.P.a
aDepartment of Obstetrics and Gynecology, Division of Gynecologic Oncology, Departments of bBiochemistry and cMicrobiology and Immunology, University of Arkansas for Medical Sciences, Little Rock, Ark., USA; dDivision of Gynecologic Oncology, University of Brescia, Brescia, Italy

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Article / Publication Details

First-Page Preview
Abstract of Original Paper

Published online: June 14, 2001
Issue release date: June 2001

Number of Print Pages: 8
Number of Figures: 1
Number of Tables: 2

ISSN: 0378-7346 (Print)
eISSN: 1423-002X (Online)

For additional information: http://www.karger.com/GOI

Abstract

To investigate and compare the phenotype and function of lymphocytes collected from patients harboring advanced ovarian cancer, leukocytes from peripheral blood (n = 18), ascitic fluid (n = 13) and tumor tissues (n = 13) were evaluated for the relative proportions of lymphocyte subsets, including CD3+, CD4+, CD8+, CD19+, CD56 and the early (CD25) and late (HLA-DR) activation markers on CD3+ T cells. The ability to synthesize type 1 cytokines (IFN-γ and IL-2) and a type 2 cytokine (IL-4) was assessed by flow cytometry. In all patients, T cells (CD3+) were the major leukocyte population detected in each tissue, with CD4+ T cells being dominant in peripheral blood lymphocytes (PBL) and tumor-associated lymphocytes (TAL) but not in tumor-infiltrating lymphocytes (TIL) (CD4:CD8 ratios: 3.0 vs. 2.0 vs. 1.0, respectively). CD19+ lymphocytes (B cells) and CD56+ lymphocytes (NK cells) were significantly higher in PBL compared to TAL and TIL (p < 0.05). TAL and TIL had a higher proportion of T cells expressing the late activation marker HLA-DR compared to PBL. In contrast, no significant differences were detected in PBL, TAL and TIL in the expression of the early activation marker CD25. Type 1 cytokines were the dominant type produced by in vitro stimulated T cells for each population, with a greater proportion of IFN-γ+ T cells in TAL and TIL compared to PBL (p < 0.01), and a higher proportion of IL-2+ T cells in PBL compared with TAL and TIL (p < 0.05). Low percentages of IL-4+ T cells (i.e. Th2) were detected in each tissue. Taken together, these data demonstrate the recruitment and accumulation of high concentrations of antigen-experienced T lymphocytes in TAL and TIL compared to PBL. However, low surface expression of IL-2 receptor (i.e. CD25), as well as depressed intracellular IL-2 production in chronically stimulated TAL and TIL suggests that the impaired antitumor function commonly detected in these lymphocyte populations may be secondary to an acquired dysregulation of the IL-2 pathway.

© 2001 S. Karger AG, Basel


Article / Publication Details

First-Page Preview
Abstract of Original Paper

Published online: June 14, 2001
Issue release date: June 2001

Number of Print Pages: 8
Number of Figures: 1
Number of Tables: 2

ISSN: 0378-7346 (Print)
eISSN: 1423-002X (Online)

For additional information: http://www.karger.com/GOI


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Drug Dosage: The authors and the publisher have exerted every effort to ensure that drug selection and dosage set forth in this text are in accord with current recommendations and practice at the time of publication. However, in view of ongoing research, changes in government regulations, and the constant flow of information relating to drug therapy and drug reactions, the reader is urged to check the package insert for each drug for any changes in indications and dosage and for added warnings and precautions. This is particularly important when the recommended agent is a new and/or infrequently employed drug.
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