Interleukin-10 expression is correlated with growth fraction in human non-small cell lung cancer xenografts

Naruke,M.; Abe,Y.; Hatanaka,H.; Ohnishi,Y.; Yamazaki,H.; Kijima,H.; Nakamura,M.; Ueyama,Y.; Kobayashi,K.

doi:10.3892/ijo.18.6.1213

Interleukin-10 expression is correlated with growth fraction in human non-small cell lung cancer xenografts

Authors:
- M. Naruke
- Y. Abe
- H. Hatanaka
- Y. Ohnishi
- H. Yamazaki
- H. Kijima
- M. Nakamura
- Y. Ueyama
- K. Kobayashi
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Affiliations: Department of Surgery, School of Medicine, Keio University, Tokyo 160-8582, Japan
Published online on: June 1, 2001 https://doi.org/10.3892/ijo.18.6.1213
Pages: 1213-1217

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Abstract

We examined IL-10 and IL-10 receptor (IL-10R) gene expression in 44 xenografts of human non-small cell lung cancer (NSCLC) by reverse transcription-polymerase chain reaction (RT-PCR) assay with human-specific primers. IL-10 gene expression was detected in 10 (22.7%) of 44 xenografts (0/11 adenocarcinomas, 6/19 squamous cell carcinomas, 4/14 large cell carcinomas) and IL-10R expression in 8 (18.2%) xenografts. The IL-10-positive xenografts immunohistochemically showed significantly increased growth fractions of neoplastic cells (471.0±112.2) relative to IL-10-negative xenografts (208.4±96.3) (p=0.009, Mann-Whitney U test), and showed significantly increased vascular number (p=0.008, Mann-Whitney U test). These results suggested that IL-10 expression is correlated with growth features in human NSCLC.