Telomerase activity as a novel marker of lung cancer and immune-associated lung diseases.

K. Hiyama, S. Ishioka, J. W. Shay, Y. Taooka, A. Maeda, T. Isobe, E. Hiyama, H. Maeda, M. Yamakido

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Abstract

Telomerase maintains telomere length and is considered to be necessary for the indefinite proliferation of human cells. Telomerase activity is detected not only in germline and immortal cancer cells, but also in stem/progenitor cells of renewal tissues and activated lymphocytes. While it is generally agreed that telomerase is a useful tumor marker, the utility of telomerase activity in non-cancerous cells should also be considered. In the present study, we quantitatively examined telomerase activity in 56 cytology samples and 106 bronchoalveolar lavage samples obtained from patients with various respiratory diseases. Fourteen of 34 samples obtained from lung cancer patients showed detectable telomerase activity, while only 7 of 128 samples obtained from patients without lung cancer did (p<0.001). Moreover, 12 of 14 telomerase-positive samples with lung cancer showed strong signals, while none without lung cancer did. Among 106 non-cancerous bronchoalveolar lavage samples, 4 telomerase positive samples had increased number of lymphocytes and increased disease progression. These findings indicate that evaluation of telomerase activity may not only be a useful diagnostic test for lung cancer, but may also be a marker of disease aggressiveness for immune-associated lung diseases.

Original languageEnglish (US)
Pages (from-to)545-549
Number of pages5
JournalInternational Journal of Molecular Medicine
Volume1
Issue number3
StatePublished - Mar 1998

Fingerprint

Telomerase
Lung Diseases
Lung Neoplasms
Bronchoalveolar Lavage
Immune System Diseases
Telomere
Lymphocyte Count
Tumor Biomarkers
Routine Diagnostic Tests
Cell Biology
Disease Progression
Stem Cells
Cell Proliferation
Lymphocytes

ASJC Scopus subject areas

  • Genetics

Cite this

Hiyama, K., Ishioka, S., Shay, J. W., Taooka, Y., Maeda, A., Isobe, T., ... Yamakido, M. (1998). Telomerase activity as a novel marker of lung cancer and immune-associated lung diseases. International Journal of Molecular Medicine, 1(3), 545-549.

Telomerase activity as a novel marker of lung cancer and immune-associated lung diseases. / Hiyama, K.; Ishioka, S.; Shay, J. W.; Taooka, Y.; Maeda, A.; Isobe, T.; Hiyama, E.; Maeda, H.; Yamakido, M.

In: International Journal of Molecular Medicine, Vol. 1, No. 3, 03.1998, p. 545-549.

Research output: Contribution to journalArticle

Hiyama, K, Ishioka, S, Shay, JW, Taooka, Y, Maeda, A, Isobe, T, Hiyama, E, Maeda, H & Yamakido, M 1998, 'Telomerase activity as a novel marker of lung cancer and immune-associated lung diseases.', International Journal of Molecular Medicine, vol. 1, no. 3, pp. 545-549.
Hiyama, K. ; Ishioka, S. ; Shay, J. W. ; Taooka, Y. ; Maeda, A. ; Isobe, T. ; Hiyama, E. ; Maeda, H. ; Yamakido, M. / Telomerase activity as a novel marker of lung cancer and immune-associated lung diseases. In: International Journal of Molecular Medicine. 1998 ; Vol. 1, No. 3. pp. 545-549.
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