PMID- 20428804 OWN - NLM STAT- MEDLINE DCOM- 20100930 LR - 20190606 IS - 1791-2431 (Electronic) IS - 1021-335X (Linking) VI - 23 IP - 6 DP - 2010 Jun TI - Anticancer activity of phenoxazines produced by bovine erythrocytes on colon cancer cells. PG - 1517-22 AB - The present study investigated the anticancer activity of 2-aminophenoxazine-3-one (Phx-3) and 2-amino-4,4 alpha-dihydro-4 alpha,7-dimethyl-3H-phenoxazine-3-one (Phx-1), which were obtained by improved preparation methods using bovine erythrocyte suspension, on colon cancer cell lines COLO201, DLD1 and PMCO1 in vitro. The preparation methods for Phx-1 and Phx-3 had the advantages of extensively shortening reaction time and reducing sample volumes up to one-seventh during treatment, compared with the conventional method using bovine hemoglobin solution, resulting in extensive reduction of handling time. Phx-1 and Phx-3 thus obtained were identified as pure by the absorption spectra and NMR spectra. These phenoxazines exerted strong, dose-dependent anticancer activity against colon cancer cell lines COLO201, DLD1 and PMCO1 in vitro and induced apoptosis of these cells. The present results demonstrate that Phx-1 and Phx-3, which were prepared by extensively improved methods using bovine erythrocytes, may be useful as therapeutic drugs against colon cancer that is intractable to chemotherapy. FAU - Nakachi, Takeshi AU - Nakachi T AD - Fourth Department of Surgery, Tokyo Medical University, Ibaraki Medical Center, Ibaraki 300-0395, Japan. FAU - Tabuchi, Takafumi AU - Tabuchi T FAU - Takasaki, Akira AU - Takasaki A FAU - Arai, Sadao AU - Arai S FAU - Miyazawa, Keisuke AU - Miyazawa K FAU - Tomoda, Akio AU - Tomoda A LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - Greece TA - Oncol Rep JT - Oncology reports JID - 9422756 RN - 0 (2-amino-4,4alpha-dihydro-4alpha,7-dimethyl-3H-phenoxazine-3-one) RN - 0 (Antineoplastic Agents) RN - 0 (Oxazines) RN - 1916-59-2 (3-aminophenoxazone) SB - IM MH - Animals MH - Antineoplastic Agents/*pharmacology MH - Cattle MH - Cell Proliferation/*drug effects MH - Chromatography, Thin Layer MH - Colonic Neoplasms/*drug therapy MH - Erythrocytes/*metabolism MH - Humans MH - Magnetic Resonance Spectroscopy MH - Oxazines/*pharmacology MH - Tumor Cells, Cultured EDAT- 2010/04/30 06:00 MHDA- 2010/10/01 06:00 CRDT- 2010/04/30 06:00 PHST- 2010/04/30 06:00 [entrez] PHST- 2010/04/30 06:00 [pubmed] PHST- 2010/10/01 06:00 [medline] AID - 10.3892/or_00000790 [doi] PST - ppublish SO - Oncol Rep. 2010 Jun;23(6):1517-22. doi: 10.3892/or_00000790.