Study on the structure-activity relationships of phoxalone and induction of apoptosis in H446 tumor cells.
A novel macrolide with dioxa and double ring pentadecanone, named as phoxalone, isolated from the culture broth of a myxobacterium Sorangium cellulosum WXNXJ-C, was well investigated. The chemical structure of Phoxalone was elucidated by spectroscopic analysis including UV, IR, (1)H NMR, MALDI-TOF-MS, and LC/MS spectra. The results of cytotoxic bioactivities on human non-small lung cancer H446, in vitro, showed that not only did phoxalone express higher antitumor bioactivity than many antitumor drugs, but it also displayed less cytotoxicity to normal human liver L02 cell lines (IC(50), 286 microg mL(-1)). Further cytotoxic bioactivity study indicated that phoxalone could induce H446 cell line apoptosis in vitro. More investigation results of flow-cytometric analysis suggested that phoxalone arrested the mitosis of H446 cell line at G2/M phase. Hence, phoxalone and its derivatives or analogs would reveal huge research value and fascinating foreground.
Guo
Wen-Jie
WJ
Department of Pharmaceutical, School of Biotechnology, Southern Yangtze University, Wuxi, Jiangsu, PR China 214122.
Tao
Wen-Yi
WY
Bi
Fang
F
D000970:Antineoplastic Agents / Q000737:chemistry / Q000302:isolation & purification / Q000494:pharmacology*; D017209:Apoptosis / Q000187:drug effects*; D045744:Cell Line, Tumor; D006801:Humans; D018942:Macrolides / Q000737:chemistry / Q000302:isolation & purification / Q000494:pharmacology*; D053078:Membrane Potential, Mitochondrial / Q000187:drug effects; D008855:Microscopy, Electron, Scanning; D008858:Microscopy, Phase-Contrast; D015394:Molecular Structure; D009231:Myxococcales / Q000737:chemistry / Q000378:metabolism; D013237:Stereoisomerism; D013329:Structure-Activity Relationship
D000970:Antineoplastic Agents; D018942:Macrolides; C527328:phoxalone