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Adenocarcinoma contains more immune tolerance regulatory t-cell lymphocytes (versus squamous carcinoma) in non-small-cell lung cancer
- Source :
- Lung. 191(3)
- Publication Year :
- 2013
-
Abstract
- Regulatory T lymphocytes (Tregs) are known to have host-immune dampening effects in many tumors and to be associated with increased tumor recurrence. Pharmacologic therapies have been developed to target these cells and hence strengthen the host’s immune system. The FoxP3 gene is a marker of Tregs and can be visualized with immunohistochemistry (IHC). We investigated the presence and pattern of Tregs in non-small-cell lung tumors to determine possible therapeutic targets in lung cancer. We selected archival samples of primary lung carcinoma and benign inflamed lung from 32 surgical resections. We created a tissue array containing duplicate cores from the N1 and N2 nodal stations from 16 of the cases along with paired benign lung and tumor. We used whole-slide analysis for the other 16 cases. We used FoxP3 IHC to visualize Tregs in all lymphoid tissue present and to assess the quantity and pattern within the tissues. All lymphoid tissue contains Tregs, but adenocarcinoma had significantly higher levels than both inflammatory lung controls and squamous carcinomas (p ≤ 0.008). Benign N1 lymph nodes (from patients with lung cancer) showed higher numbers of Tregs for adenocarcinoma versus squamous carcinoma. These findings reveal that Tregs are present in all lung tissues examined, but with significant enrichment in adenocarcinoma. This may lead to a more permissive microenvironment for adenocarcinoma and may explain aggressive patterns of tumor spread for this histology. Lung cancer patients with adenocarcinoma histology may benefit most from Treg-targeted therapy.
- Subjects :
- Pulmonary and Respiratory Medicine
Pathology
medicine.medical_specialty
Lung Neoplasms
Regulatory T cell
chemical and pharmacologic phenomena
Adenocarcinoma of Lung
Adenocarcinoma
T-Lymphocytes, Regulatory
Lymphocytes, Tumor-Infiltrating
Carcinoma, Non-Small-Cell Lung
medicine
Carcinoma
Biomarkers, Tumor
Tumor Microenvironment
Humans
Lymphocyte Count
Lung cancer
Tumor microenvironment
business.industry
FOXP3
Forkhead Transcription Factors
medicine.disease
Immunohistochemistry
Squamous carcinoma
Lymphatic system
medicine.anatomical_structure
Tissue Array Analysis
Carcinoma, Squamous Cell
Tumor Escape
business
Subjects
Details
- ISSN :
- 14321750
- Volume :
- 191
- Issue :
- 3
- Database :
- OpenAIRE
- Journal :
- Lung
- Accession number :
- edsair.doi.dedup.....2d7e3ad529b90b9cb49cd4a45b339325