食品科学 ›› 2010, Vol. 31 ›› Issue (15): 248-252.doi: 10.7506/spkx1002-6630-201015054

• 营养卫生 • 上一篇    下一篇

笃斯越桔花青素提取物对3T3-L1前脂肪细胞生长抑制作用

柳嘉1,David G. Popovich2,景浩1   

  1. 1.中国农业大学食品科学与营养工程学院 2. 新加坡国立大学化学系
  • 收稿日期:2010-01-08 出版日期:2010-08-15 发布日期:2010-12-29
  • 通讯作者: 景浩 E-mail:haojing@cau.edu.cn
  • 基金资助:

    中央高校基本科研业务费专项资金项目(2009-2-11)

Growth Inhibition Effect of Bog Bilberry Anthocyanin Extract on 3T3-L1 Preadipocytes

LIU Jia1,David G. Popovich2,JING Hao1,*   

  1. 1. College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China;
    2. Department of Chemistry, National University of Singapore, Singapore 117543, Singapore
  • Received:2010-01-08 Online:2010-08-15 Published:2010-12-29
  • Contact: JING Hao E-mail:haojing@cau.edu.cn

摘要:

目的:研究笃斯越橘花青素提取物对3T3-L1 前脂肪细胞生长抑制作用及其作用机理。方法:采用MTT法观察细胞生长抑制并确定半数抑制浓度(IC50),LDH(lactate dehydrogenase)法评价提取物引起的细胞膜损伤,流式细胞计法测定细胞周期,荧光显微镜观察凋亡细胞的形态学特征。结果:笃斯越橘花青素提取物能够有效地抑制3T3-L1 前脂肪细胞的生长且IC50 约为214μg/mL;LDH 实验表明细胞LDH 释放率在24、48、72h 分别为89.0%、85.2%、67.8%,72h 时相对24h 或48h 明显降低(P < 0.05),提取物对3T3-L1 前脂肪细胞膜的通透性未见明显增加;笃斯越橘花青素提取物能够有效诱导细胞凋亡,同时在S 或G0/G1 期产生阻滞,但是对细胞的G2/M 期未见明显影响,荧光显微镜观察细胞出现典型凋亡特征。结论:笃斯越橘花青素提取物能有效抑制3T3-L1 前脂肪细胞生长的作用,具有开发为天然抗肥胖功能因子的潜在可能。

关键词: 笃斯越橘花青素提取物, 3T3-L1 前脂肪细胞, 生长抑制, 细胞凋亡

Abstract:

Objective: To study the inhibition effect and its mechanism of bog bilberry (Vaccinium uliginosum L.) anthocyanin extract (BBAE) on the growth of 3T3-L1 preadipocytes. Methods: MTT assay, LDH (lactate dehydrogenase) assay, flow cytometry and fluorescence microscope were used for measuring cell growth inhibition (IC50), membrane permeability, cell cycle and the morphological features of apoptotic cells, respectively. Results: BBAE effectively inhibited the growth of 3T3-L1 preadipocytes in a dosage-dependent way, with an IC50 of approximately 214μg/mL. 3T3-L1 preadipocytes showed a significant (P<0.05) lower LDH release (67.8%) after exposure to BBAE for 72 h than for 24h (89.0%) and 48 h (85.2%). No obvious improvement in the membrane permeability in 3T3-L1 preadipocytes was observed after BBAE treatment. BBAE effectively induced apoptosis of 3T3-L1 preadipocytes, significantly (P<0.05) increased cell population in the sub-G1 phase, had no significant effect in the G2/M phase and exhibited a block in the S and G0/G1 phases. After incubation for 72 h in the presence of BBAE, 3T3-L1 preadipocytes exhibited typical apoptosis features observed under fluorescence microscope.

Key words: bog bilberry anthocyanin extract, 3T3-L1 preadipocytes, growth inhibition, apoptosis

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