Abstract:
:2-Aminophenoxazine-3-one (Phx-3) induced cellular apoptosis in mouse melanoma B16 cells as detected by DNA laddering and upregulated Fas expression in the cells in vitro. Next, the anti-metastatic effects of Phx-3 were investigated in C56BL/6 mice. When B16 melanoma cells were injected into the tail veins of mice, significant metastasis of the cells was indicated in the lungs, 14 days after treatment. In contrast, when 0.5 mg/kg Phx-3 was administered to mice through the tail veins, once simultaneously with or every three days after the administration of B16 melanoma cells, the number of metastasized pulmonary cells was extremely reduced. Moderate reduction of the number of metastasized pulmonary cells was indicated in the mice with a single dose of Phx-3 on day 3 after injection of the cells. However, when Phx-3 was administered in a single dose, 6 or 9 days after the injection of the cells, the number of metastasized pulmonary cells remained the same. The present results indicate that the metastasis of mouse B16 melanoma cells to the lung was significantly inhibited in mice administered Phx-3, which activated the intrinsic and extrinsic apoptotic pathways. The present study suggests that Phx-3 might be a potential anti-metastatic agent as well as an anticancer agent.
journal_name
J Pharmacol Scijournal_title
Journal of pharmacological sciencesauthors
Hongo T,Miyano-Kurosaki N,Kurosaki K,Hata A,Harigae S,Tomoda Adoi
10.1254/jphs.10023fpsubject
Has Abstractpub_date
2010-01-01 00:00:00pages
63-8issue
1eissn
1347-8613issn
1347-8648pii
JST.JSTAGE/jphs/10023FPjournal_volume
114pub_type
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