Abstract | BACKGROUND: METHODS: IDO1 protein and mRNA were assessed by immunohistochemistry, immunoblotting, and PCR in the 68 resected lung adenocarcinomas at stages I-III as well as adjacent normal lung tissues. Infiltration of CD3, CD8, and CD4 lymphocytes in the tumor and adjacent normal lung tissues was assessed by immunohistochemical staining. RESULTS: IDO1 protein and mRNA were detected in various stages of lung adenocarcinoma with highest expression at stage III. In contrast, biomarkers of T cell subset, CD3, CD4, and CD8, were highly expressed in the normal lung tissues and stage I adenocarcinoma tissues but significantly reduced in the stage II and III tumor tissues. CONCLUSIONS: The current study demonstrated that the higher level of IDO1 expression in the lung adenocarcinoma was, the less infiltration of T lymphocytes was found in the tumors. Findings of this study indicated that IDO1 may contribute to the reduction of T lymphocyte infiltration into the lung adenocarcinoma.
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Authors | Xiaoling Zhao, Yaran Li, Xu Yang, Xiaochong Zhang, Jing Xie, Shaoteng Li, Hongzhen Liu, Jun Guo, Lili He, Wei Chen, Dengxiang Liu |
Journal | BioMed research international
(Biomed Res Int)
Vol. 2022
Pg. 2381018
( 2022)
ISSN: 2314-6141 [Electronic] United States |
PMID | 35187162
(Publication Type: Journal Article)
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Copyright | Copyright © 2022 Xiaoling Zhao et al. |
Chemical References |
- Indoleamine-Pyrrole 2,3,-Dioxygenase
- RNA, Messenger
|
Topics |
- Adenocarcinoma of Lung
(immunology, pathology, surgery)
- Adult
- Aged
- CD4-Positive T-Lymphocytes
(immunology)
- Female
- Humans
- Indoleamine-Pyrrole 2,3,-Dioxygenase
(immunology)
- Male
- Middle Aged
- Neoplasm Staging
- RNA, Messenger
(metabolism)
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