Related Experiment Videos
CD34-positive stromal cells in primary lung carcinomas
Hirofumi Nakayama1, Hideaki Enzan, Maya Yamamoto
1Department of Molecular Pathology, Graduate School of Biomedical Sciences, Hiroshima University, Hiroshima 734-8551, Japan. nakayamh@hiroshima-u.ac.jp
Oncology Reports
|July 29, 2003
Summary
CD34-positive stromal cells are specifically found in lung adenocarcinoma stroma, not other lung cancer types. These cells may support the growth of lung adenocarcinomas.
Area of Science:
- Oncology
- Cell Biology
- Pulmonology
Background:
- Stromal cells play a crucial role in tumor microenvironment.
- Understanding stromal cell phenotypes is vital for cancer research.
- CD34 is a marker for certain stromal cells, including endothelial cells and fibroblasts.
Purpose of the Study:
- To investigate the distribution and specificity of CD34-positive stromal cells in primary lung carcinomas.
- To correlate the presence of CD34-positive stromal cells with different histological types of lung cancer.
Main Methods:
- Examined 26 surgically resected primary lung carcinomas (13 adenocarcinomas, 10 squamous cell carcinomas, 2 large cell carcinomas, 1 small cell carcinoma).
- Analyzed normal lung tissues alongside tumor tissues.
- Assessed the distribution of CD34-positive stromal cells using immunohistochemistry.
Main Results:
- CD34-positive stromal cells were identified in normal lung tissue near bronchiolar and bronchial epithelium.
- Nine out of 13 lung adenocarcinomas exhibited CD34-positive stromal cells within the tumor stroma.
- No CD34-positive stromal cells were detected in the stroma of squamous cell, large cell, or small cell lung carcinomas examined.
Conclusions:
- CD34-positive stromal cells appear to be specific to the stroma of primary lung adenocarcinomas.
- These cells may potentially play a supportive role in the development or progression of lung adenocarcinomas.