[HTML][HTML] Inhibition of hyaluronan retention by 4-methylumbelliferone suppresses osteosarcoma cells in vitro and lung metastasis in vivo
E Arai, Y Nishida, J Wasa, H Urakawa, L Zhuo… - British Journal of …, 2011 - nature.com
E Arai, Y Nishida, J Wasa, H Urakawa, L Zhuo, K Kimata, E Kozawa, N Futamura, N Ishiguro
British Journal of Cancer, 2011•nature.comBackground: Hyaluronan (HA) plays crucial roles in the tumourigenicity of many types of
malignant tumours. 4-Methylumbelliferone (MU) is an inhibitor of HA synthesis. Several
studies have shown its inhibitory effects on malignant tumours; however, none have focused
on its effects on osteosarcoma. Methods: We investigated the effects of MU on HA
accumulation and tumourigenicity of highly metastatic murine osteosarcoma cells (LM8) that
have HA-rich cell-associated matrix, and human osteosarcoma cell lines (MG-63 and HOS) …
malignant tumours. 4-Methylumbelliferone (MU) is an inhibitor of HA synthesis. Several
studies have shown its inhibitory effects on malignant tumours; however, none have focused
on its effects on osteosarcoma. Methods: We investigated the effects of MU on HA
accumulation and tumourigenicity of highly metastatic murine osteosarcoma cells (LM8) that
have HA-rich cell-associated matrix, and human osteosarcoma cell lines (MG-63 and HOS) …
Abstract
Background:
Hyaluronan (HA) plays crucial roles in the tumourigenicity of many types of malignant tumours. 4-Methylumbelliferone (MU) is an inhibitor of HA synthesis. Several studies have shown its inhibitory effects on malignant tumours; however, none have focused on its effects on osteosarcoma.
Methods:
We investigated the effects of MU on HA accumulation and tumourigenicity of highly metastatic murine osteosarcoma cells (LM8) that have HA-rich cell-associated matrix, and human osteosarcoma cell lines (MG-63 and HOS).
Results:
In vitro, MU inhibited HA retention, thereby reducing the formation of functional cell-associated matrices, and also inhibited cell proliferation, migration, and invasion. Akt phosphorylation was suppressed by MU (1.0 m M). In vivo, although MU showed only a mild inhibitory effect on the growth of the primary tumour, it markedly inhibited (75% reduction) the development of lung metastasis. Hyaluronan retention in the periphery of the primary tumour was markedly suppressed by MU.
Conclusion:
These findings suggested that MU suppressed HA retention and cell-associated matrix formation in osteosarcoma cells, resulting in a reduction of tumourigenicity, including lung metastasis. 4-Methylumbelliferone is a promising therapeutic agent targeting both primary tumours and distant metastasis of osteosarcoma, possibly via suppression of HA retention.
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