title: Berberine decreased N-acetylation of 2-aminofluorene through inhibition of N-acetyltransferase gene expression in human leukemia HL-60 cells.
abstract: Previous studies have demonstrated that berberine decreases N-acetyltransferase (NAT) activity in human leukemia HL-60 cells, however, NAT gene expression has not been investigated. In this study, berberine was selected for testing the inhibition of N-acetylation of 2-aminofluorene (AF) and NAT gene expression in human HL-60 cells. The N-acetylation of AF was determined and quantitated by high performance liquid chromatography (HPLC). The data showed that a 24-hour berberine treatment decreased the amount of N-acetylation of AF in HL-60 cells. The NAT enzymes were stained and examined by Western blotting and flow cytometry. The results indicated that berberine decreased the levels of NAT protein in HL-60 cells. The expression of NAT gene (mRNAT NAT1) was determined by polymerase chain reaction (PCR), and it was found that berberine had inhibited the expression of mRNA NAT1 in human HL-60 cells.
authors.affiliation: Graduate Institute of Chinese Medical Science, School of Chinese Medicine, Taiwan, ROC.
authors.forename: Chin-Chung
authors.initials: CC
authors.lastname: Lin
authors.forename: Shung-Te
authors.initials: ST
authors.lastname: Kao
authors.forename: Guang-Wei
authors.initials: GW
authors.lastname: Chen
authors.forename: Jing-Gung
authors.initials: JG
authors.lastname: Chung
mesh_terms: D000107:Acetylation / Q000187:drug effects; D001191:Arylamine N-Acetyltransferase / Q000037:antagonists & inhibitors* / Q000378:metabolism; D001599:Berberine / Q000494:pharmacology*; D015153:Blotting, Western; D004305:Dose-Response Relationship, Drug; D004791:Enzyme Inhibitors / Q000494:pharmacology*; D005434:Flow Cytometry; D005449:Fluorenes / Q000378:metabolism*; D015870:Gene Expression / Q000187:drug effects; D018922:HL-60 Cells; D006801:Humans; D007527:Isoenzymes / Q000037:antagonists & inhibitors* / Q000378:metabolism; D015473:Leukemia, Promyelocytic, Acute / Q000201:enzymology* / Q000378:metabolism; D016133:Polymerase Chain Reaction; D012333:RNA, Messenger / Q000096:biosynthesis / Q000235:genetics
chemical_list: D004791:Enzyme Inhibitors; D005449:Fluorenes; D007527:Isoenzymes; D012333:RNA, Messenger; D001599:Berberine; C012177:2-aminofluorene; D001191:Arylamine N-Acetyltransferase; C089384:N-acetyltransferase 1