Cytotoxic Properties, Anthocyanin and Furanocoumarin Content of Red-Pigments Obtained from Callistemon citrinus (Curtis) Skeels Flowers

IF 1.1 Q4 PHARMACOLOGY & PHARMACY
Ardalan Pasdaran, N. Azarpira, Nastaran Yaghoobi Solut, M. Zare, Azar Hamedi, Nazila Karami, A. Hamedi
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引用次数: 1

Abstract

Background and objectives: There is growing interest in introducing safe and bioactive natural red pigments to the pharmaceutical and cosmetic industries. This study was designed to determine the phytochemical content and potential cytotoxicity of red pigment from Callistemon citrinus (Curtis) Skeels (syn. Melaleuca citrina (Curtis) Dum.Cours.) flowers. Methods: The flowers’ anthocyanin rich pigment was extracted with ethanol (70%, v/v) containing 0.5% formic acid. This extract was fractionated by a three-step process through a Sep-Pak C18 cartridge with water, ethyl acetate, and methanol, respectively. The anthocyanin and coumarin content of the red pigment was identified based on a reverse phase high performance liquid chromatography-electrospray ionization mass spectrometry (HPLC/ESI-MS/MS). The MTT assay was used to assess the cytotoxicity of red pigment evaluated on normal human foreskin fibroblasts as well as two malignant cell lines: human breast cancer (MCF-7) and human fibrosarcoma cells (HT1080) at 24, 48 and 72 hours. Results: The anthocyanin compounds in the red pigment fraction were cyanidin (1), cyanidin 3,5-O-diglucoside (2), cyanidin 3-O-glucoside (3), and cyanidin 3-O-glucoside-8-ethyl-catechin (4). Flowers’ pigment also contained two furanocoumarins, including 8-(but-2-en-2-yl)-8,9-dihydro-2H-furo[2,3-h] chromen-2-one (or 15-methyl angenomallin, (5)) and 9-methyl-7H-furo[3,2-g] chromen-7-one (or 8-methylpsoralen, (6)). According to the MTT assays, the highest cytotoxic effect was observed on human foreskin fibroblasts with an IC50 values of <12.5 (µg/ mL, 24 h) and 85.2 (µg/ mL, 48 h). Conclusion: It might be assumed that application of the red pigment of C. citrinus in topical formulations and cosmetics should be done with caution due to the observed cytotoxicity on dermal fibroblasts.
桔梗花红色素的细胞毒性、花青素和呋喃香豆素含量
背景和目的:人们对向制药和化妆品行业引入安全且具有生物活性的天然红色色素越来越感兴趣。本研究旨在测定柑橘千层花(Callistemon citrinus (Curtis) Skeels)中红色素的植物化学含量和潜在的细胞毒性。方法:采用含0.5%甲酸的乙醇(70%,v/v)提取花青素。该提取物通过Sep-Pak C18滤筒分别用水、乙酸乙酯和甲醇进行三步分离。采用反相高效液相色谱-电喷雾质谱法(HPLC/ESI-MS/MS)对红色素中花青素和香豆素的含量进行了鉴定。采用MTT法评估红色素对正常人包皮成纤维细胞以及两种恶性细胞系:人乳腺癌(MCF-7)和人纤维肉瘤细胞(HT1080)在24、48和72小时的细胞毒性。结果:红花色素中花青素类化合物为花青素(1)、花青素3,5- o-二葡糖苷(2)、花青素3- o-葡萄糖苷(3)、花青素3- o-葡萄糖苷-8-乙基儿茶素(4)。花色素还含有2种呋喃香豆素,分别为8-(丁-2-烯-2-基)-8,9-二氢- 2h -呋喃[2,3-h] -2- 1(或15-甲基angenomallin,(5))和9-甲基- 7h -呋喃[3,2-g] -7- 1(或8-甲基补骨脂素,(6))。根据MTT实验,对人包皮成纤维细胞的细胞毒性作用最高,IC50值<12.5(µg/ mL, 24 h)和85.2(µg/ mL, 48 h)。结论:由于观察到对皮肤成纤维细胞的细胞毒性,可以认为柑橘红素在外用制剂和化妆品中的应用应谨慎。
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来源期刊
Research Journal of Pharmacognosy
Research Journal of Pharmacognosy PHARMACOLOGY & PHARMACY-
CiteScore
1.10
自引率
20.00%
发文量
0
审稿时长
8 weeks
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