IL-6 Receptor Is a Possible Target against Growth of Metastasized Lung Tumor Cells in the Brain
AbstractIn the animal model of brain metastasis using human lung squamous cell carcinoma-derived cells (HARA-B) inoculated into the left ventricle of the heart of nude mice, metastasized tumor cells and brain resident cells interact with each other. Among them, tumor cells and astrocytes have been reported to stimulate each other, releasing soluble factors from both sides, subsequently promoting tumor growth significantly. Among the receptors for soluble factors released from astrocytes, only IL-6 receptor (IL-6R) on tumor cells was up-regulated during the activation with astrocytes. Application of monoclonal antibody against human IL-6R (tocilizumab) to the activated HARA-B cells, the growth of HARA-B cells stimulated by the conditioned medium of HARA-B/astrocytes was significantly inhibited. Injecting tocilizumab to animal models of brain metastasis starting at three weeks of inoculation of HARA-B cells, two times a week for three weeks, significantly inhibited the size of the metastasized tumor foci. The up-regulated expression of IL-6R on metastasized lung tumor cells was also observed in the tissue from postmortem patients. These results suggest that IL-6R on metastasized lung tumor cells would be a therapeutic target to inhibit the growth of the metastasized lung tumor cells in the brain. View Full-Text
Scifeed alert for new publicationsNever miss any articles matching your research from any publisher
- Get alerts for new papers matching your research
- Find out the new papers from selected authors
- Updated daily for 49'000+ journals and 6000+ publishers
- Define your Scifeed now
Noda, M.; Yamakawa, Y.; Matsunaga, N.; Naoe, S.; Jodoi, T.; Yamafuji, M.; Akimoto, N.; Teramoto, N.; Fujita, K.; Ohdo, S.; Iguchi, H. IL-6 Receptor Is a Possible Target against Growth of Metastasized Lung Tumor Cells in the Brain. Int. J. Mol. Sci. 2013, 14, 515-526.
Noda M, Yamakawa Y, Matsunaga N, Naoe S, Jodoi T, Yamafuji M, Akimoto N, Teramoto N, Fujita K, Ohdo S, Iguchi H. IL-6 Receptor Is a Possible Target against Growth of Metastasized Lung Tumor Cells in the Brain. International Journal of Molecular Sciences. 2013; 14(1):515-526.Chicago/Turabian Style
Noda, Mami; Yamakawa, Yukiko; Matsunaga, Naoya; Naoe, Satoko; Jodoi, Taishi; Yamafuji, Megumi; Akimoto, Nozomi; Teramoto, Norihiro; Fujita, Kyota; Ohdo, Shigehiro; Iguchi, Haruo. 2013. "IL-6 Receptor Is a Possible Target against Growth of Metastasized Lung Tumor Cells in the Brain." Int. J. Mol. Sci. 14, no. 1: 515-526.