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CD3+ CD4+ and CD3+ CD8+ Lymphocyte Subgroups and their Surface Receptors NKG2D and NKG2A in Patients with Non-small Cell Lung Cancer

  • Yu, Da-Ping (Second Department of Thoracic Surgery, Beijing Chest Hospital, Capital Medical University) ;
  • Han, Yi (Second Department of Thoracic Surgery, Beijing Chest Hospital, Capital Medical University) ;
  • Zhao, Qiu-Yue (Second Department of Thoracic Surgery, Beijing Chest Hospital, Capital Medical University) ;
  • Liu, Zhi-Dong (Second Department of Thoracic Surgery, Beijing Chest Hospital, Capital Medical University)
  • Published : 2014.03.30

Abstract

Background: To explore the prevalence of lymphocyte subgroups $CD3^+$ $CD4^+$ and $CD3^+$ $CD8^+$ and their surface receptors NKG2D and NKG2A in patients with non-small cell lung cancer (NSCLC). Materials and Methods: A total of 40 patients with NSCLC were divided into different groups according to different clinical factors (TNM staging, pathological patterns and genders) for assessment of relations with $CD3^+$ $CD4^+$ and $CD3^+$ $CD8^+$ and the surface receptors NKG2D and NKG2A of T lymphocytes in peripheral blood by flow cytometry. Results: Patients in the advanced group had evidently lower levels of $CD3^+$ $CD4^+$ but markedly higher levels of $CD3^+$ $CD8^+$ in peripheral blood than those with early lesions (p<0.05). In addition, NSCLC patients in the advanced group had obviously higher $CD3^+$ $CD4^+$ NKG2D and $CD3^+$ $CD8^+$ NKG2A expression rates but lower $CD3^+$ $CD4^+$ NKG2A and $CD3^+$ $CD8^+$ NKG2D expression rates (p<0.05). However, there were no significant differences between NSCLC patients with different genders and pathological patterns in expression levels of lymphocyte subgroups $CD3^+$ $CD4^+$ and $CD3^+$ $CD8^+$ and their surface receptors NKG2D and NKG2A. Conclusions: Unbalanced expression of surface receptors NKG2D and NKG2A in $CD3^+$ $CD4^+$ and $CD3^+$ $CD8^+$ lymphocytes may be associated with a poor prognosis, greater malignancy and immunological evasion by advanced cancers, related to progression of lung cancer.

Keywords

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