Expression of PD-1 on CD4+ Tumor-Infiltrating Lymphocytes in Tumor Microenvironment Associated with Pathological Characteristics of Breast Cancer.

Abstract:

Objective:This study aimed to investigate the correlation of CD4+/PD-1+ or CD4+/PD-1- tumor-infiltrating lymphocytes with pathological characteristics in breast cancer patients. Methods:A cross-sectional study consecutively recruited 133 patients with invasive ductal breast cancer. The expression of CD4, programmed cell death protein 1 (PD-1), CK7, CK20, E-cadherin, or Ki-67 was detected by immunohistochemistry. The associations between CD4+/PD-1+ or CD4+/PD-1- tumor-infiltrating lymphocytes and pathological characteristics were evaluated. Results:Elderly patients intended to have a lower level of CD4+/PD-1- tumor-infiltrating lymphocytes (p < 0.05). Patients with positive E-cadherin expression had higher median cell counts of CD4+/PD-1- tumor-infiltrating lymphocytes than patients with negative E-cadherin expression (30/HPF versus 10/HPF, p < 0.05). Counts of CD4+/PD-1+ tumor-infiltrating lymphocytes had a significant correlation with Ki-67 index that the correlation coefficient was 0.29 (p = 0.001). Positive CK20 expression was related to a higher level of CD4+/PD-1- tumor-infiltrating lymphocytes than negative CK20 expression (73/HPF versus 30/HPF, p < 0.05). Conclusion:CD4+/PD-1+ or CD4+/PD-1- tumor-infiltrating lymphocytes showed diverse association with pathological features of breast cancer. CD4+/PD-1+ tumor-infiltrating lymphocytes had a significant relationship with Ki-67 expression whereas CD4+/PD-1- tumor-infiltrating lymphocytes had a significant relationship with E-cadherin expression. Further studies are warranted to explore the immunomodulatory effects of phenotypes of CD4+ T cell subsets in breast cancer.

journal_name

J Immunol Res

authors

Zhao YJ,Zhang J,Shi F,Hu ZP,Wu JP,Wu GJ,Wang RB,Zhou Q,Chang H,Li YN,Song QK

doi

10.1155/2018/5690258

subject

Has Abstract

pub_date

2018-07-04 00:00:00

pages

5690258

eissn

2314-8861

issn

2314-7156

journal_volume

2018

pub_type

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