Abstract:
:Lung cancer is the leading cause of cancer death worldwide. Adenocarcinoma, the most commonly diagnosed histologic type of lung cancer, is associated with smoking. Cigarette smoke promotes inflammation on the airways, which might be mediated by Th17 cells. This inflammatory environment may contribute to tumor development. In contrast, some reports indicate that tumors may induce immunosuppressive Treg cells to dampen immune reactivity, supporting tumor growth and progression. Thus, we aimed to analyze whether chronic inflammation or immunosuppression predominates at the systemic level in lung adenocarcinoma patients, and several cytokines and Th17 and Treg cells were studied. Higher proportions of IL-17-producing CD4(+) T-cells were found in smoking control subjects and in lung adenocarcinoma patients compared to nonsmoking control subjects. In addition, lung adenocarcinoma patients increased both plasma concentrations of IL-2, IL-4, IL-6, and IL-10, and proportions of Latency Associated Peptide (LAP) TGF-β subset of CD4(+)CD25(+)CD127(-) Treg cells, which overexpressed LAP TGF-β. This knowledge may lead to the development of immunotherapies that could inhibit the suppressor activity mediated by the LAP TGF-β subset of CD4(+)CD25(+)CD127(-) Treg cells to promote reactivity of immune cells against lung adenocarcinoma cells.
journal_name
Biomed Res Intjournal_title
BioMed research internationalauthors
Islas-Vazquez L,Prado-Garcia H,Aguilar-Cazares D,Meneses-Flores M,Galicia-Velasco M,Romero-Garcia S,Camacho-Mendoza C,Lopez-Gonzalez JSdoi
10.1155/2015/430943subject
Has Abstractpub_date
2015-01-01 00:00:00pages
430943eissn
2314-6133issn
2314-6141journal_volume
2015pub_type
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