title: Characterization of Anthocyanins in Perilla frutescens var. acuta Extract by Advanced UPLC-ESI-IT-TOF-MSn Method and Their Anticancer Bioactivity.
abstract: The anthocyanin extract from a domestic Perilla cultivar (Perilla frutescens var. acuta) were isolated and characterized with high mass accuracy and multi-dimensional fragmentation by means of ultra-performance liquid chromatography (UPLC) and electrospray ionization-ion trap-time of flight mass spectrometry analysis (ESI-IT-TOF-MSn). The new developed and applied LC-MS method focused on in-depth screening of anthocyanin compounds with similar structures which also provided a new approach of anthocyanin characterization without the use of external standards. Selective detection of interested anthocyanins was achieved utilizing extracted ion chromatogram (EIC) analysis, while MSn spectra were recorded to allow identification of the anthocyanin based on characteristic fragmentation patterns. Seven anthocyanins including one feruloyl (Cyanidin 3-O-feruloylglucoside-5-O-glucoside), two caffeoyl (Cyanidin 3-O-caffeoylglucoside-5-O-glucoside, Cyanidin 3-O-caffeoylglucoside-5-O-malonylglucoside) and four coumaroyl substituted anthocyanins (Cis-shisonin, Malonyl-cis-shisonin, Shisonin, and Malonyl-shisonin) were identified. Annexin-V FITC/PI flow cytometric assay was performed to analyze the influence of anthocyanin extract of P. frutescens var. acuta on cell apoptosis. The results suggested that Perilla anthocyanins can induce Hela cell apoptosis by a dose dependent manner.
authors.affiliation: Department of Applied Biology, College of Bioengineering, East China University of Science and Technology, Shanghai 200237, China. heyankang@live.cn.
authors.forename: Yan-Kang
authors.initials: YK
authors.lastname: He
authors.affiliation: Department of Applied Biology, College of Bioengineering, East China University of Science and Technology, Shanghai 200237, China. 030121237@mail.ecust.edu.cn.
authors.forename: You-Yuan
authors.initials: YY
authors.lastname: Yao
authors.affiliation: Department of Applied Biology, College of Bioengineering, East China University of Science and Technology, Shanghai 200237, China. changyn@ecust.edu.cn.
authors.forename: Ya-Ning
authors.initials: YN
authors.lastname: Chang
mesh_terms: D000872:Anthocyanins / Q000737:chemistry* / Q000494:pharmacology*; D000970:Antineoplastic Agents / Q000737:chemistry* / Q000494:pharmacology*; D002851:Chromatography, High Pressure Liquid / Q000379:methods; D004365:Drugs, Chinese Herbal / Q000737:chemistry / Q000302:isolation & purification / Q000494:pharmacology; D006367:HeLa Cells; D006801:Humans; D031344:Perilla frutescens / Q000737:chemistry*; D021241:Spectrometry, Mass, Electrospray Ionization / Q000379:methods
chemical_list: D000872:Anthocyanins; D000970:Antineoplastic Agents; D004365:Drugs, Chinese Herbal
keywords: ESI-IT-TOF-MSn; Hela  cells; Perilla frutescens var. acuta; anthocyanins; apoptosis