The Tohoku Journal of Experimental Medicine
Online ISSN : 1349-3329
Print ISSN : 0040-8727
ISSN-L : 0040-8727
Regular Contributions
Infiltration of CD8+ T cells in Non-Small Cell Lung Cancer is Associated with Dedifferentiation of Cancer Cells, but not with Prognosis
Masuko Mori, Haruo Ohtani, Yoshitaka Naito, Motoyasu Sagawa, Masami Sato, Shigefumi Fujimura, Hiroshi Nagura
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キーワード: tumor-infiltrating lymphocytes, non-small cell lung cancer, CD8, immunohistochemistry
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2000 年 191 巻 2 号 p. 113-118

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CD8+ T cells infiltrating within cancer cell nests in human colorectal cancer were associated with a favorable patients' survival, suggesting the presence of anti-tumor immunity. The present study was designed to examine this concept in non-small cell lung cancer (NSCLC) by a retrospective analysis of 128 surgically resected cases. Immunohistochemical analysis showed that the number of CD8+ T cells within cancer cell nests in NSCLC was related to the histological subtype (large cell carcinoma or squamous cell carcinoma>adenocarcinoma) and the degree of dedifferentiation (undifferentiated type>differentiated type). In contrast to colorectal cancer, the number of CD8+ T cells in NSCLC had no statistically significant impact on the patients' survival. The present study demonstrated that the degree of infiltration of CD8+ T cells within cancer cell nests is dependent on the dedifferentiation of cancer cells in NSCLC, which could be one of the important aspects for the study of tumor immunity.
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© 2000 Tohoku University Medical Press
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  • About this Journal
    The Tohoku Journal of Experimental Medicine (TJEM) was founded in 1920 by professors of Tohoku Imperial University, Medical School. The TJEM has been published continuously, except for the year of 1946 just after the World War II. The TJEM is open to original articles in all branches of medical sciences. The TJEM also covers the fields of disaster-prevention science, including earthquake archeology.


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