华南理工大学学报(自然科学版) ›› 2023, Vol. 51 ›› Issue (12): 118-130.doi: 10.12141/j.issn.1000-565X.220798

• 食品科学与技术 • 上一篇    下一篇

粪肠球菌EF-ZA1107-06的体外益生特性研究

许喜林 彭芸燕 周晓莉 钟舒莹 段龙辉 刘冬梅   

  1. 华南理工大学 食品科学与工程学院,广东 广州 510640
  • 收稿日期:2022-12-05 出版日期:2023-12-25 发布日期:2023-05-06
  • 作者简介:许喜林(1964-),男,博士,副教授,主要从事食品安全与控制研究。E-mail: xuxilin@scut.edu.cn
  • 基金资助:
    国家自然科学基金资助项目(31771908);广东省乡村振兴战略专项资金种业振兴项目(2022-440000-4301030402-9565)

Study on Beneficial Characteristics inVitro of Enterococcus Faecalis EF-ZA1107-06

XU Xilin PENG Yunyan ZHOU Xiaoli ZHONG Shuying DUAN Longhui LIU Dongmei   

  1. School of Food Science and Engineering,South China University of Technology,Guangzhou 510640,Guangdong,China
  • Received:2022-12-05 Online:2023-12-25 Published:2023-05-06
  • About author:许喜林(1964-),男,博士,副教授,主要从事食品安全与控制研究。E-mail: xuxilin@scut.edu.cn
  • Supported by:
    the National Natural Science Foundation of China(31771908)

摘要:

已有研究表明,益生菌具有良好的抗糖尿病和抗氧化活性,并对人类癌细胞系有很强的抑制作用。本研究以α-葡萄糖苷酶和α-淀粉酶抑制率、超氧阴离子自由基清除率、亚铁离子螯合率和还原活性为指标,比较了粪肠球菌(Enterococcus faecalis)EF-ZA1107-06和鼠李糖乳杆菌(Lactobacillus. rhamnosus GG,LGG)的体外抗糖尿病和抗氧化能力;通过测量Caco-2细胞系中谷胱甘肽过氧化物酶(GSH-Px)、总超氧化物歧化酶(T-SOD)和过氧化氢酶(CAT)的活性,研究了EF-ZA1107-06对细胞氧化应激的影响,并用HepG2和MDA-MB-231细胞系初步探讨了其抗癌活性和机制。结果表明,EF-ZA1107-06的上清液对超氧阴离子自由基的清除率最高(40.78%~59.61%),对亚铁离子的螯合能力最强(39.28%~56.59%),而EF-ZA1107-06裂解液的还原活性最高,相当于1.072 mmol/L当量半胱氨酸,明显高于LGG裂解液(P<0.05)。对α-淀粉酶和α-葡萄糖苷酶活性的抑制证实了EF-ZA1107-06具有抗糖尿病活性;同时,EF-ZA1107-06能在一定程度上减少H2O2对Caco-2细胞造成的氧化损伤,抑制HepG2细胞的S期和G2期,但只抑制MDA-MB-231细胞的S期;诱导HepG2细胞和MDA-MB-231细胞早期凋亡的结果证实了EF-ZA1107-06具有抗癌活性。

关键词: 粪肠球菌, 抗氧化能力, 抗癌活性, 抗糖尿病活性

Abstract:

Studies have shown that probiotic has good antidiabetic and antioxidant activities and great inhibitory effects on human cancer cell lines. This paper took α-glucosidase and α-amylase inhibition rate, superoxide anion radical scavenging rate, ferrous ion chelating rate and reducing activity as indexes, and compared the antidiabetic and antioxidant capacities in vitro between Enterococcus faecalis EF-ZA1107-06 and Lactobacillus rhamnosus GG (LGG). The effects of EF-ZA1107-06 on cellular oxidative stress were investigated by measuring the enzyme activities of glutathione peroxidase (GSH-Px), total superoxide dismutase (T-SOD) and catalase (CAT) in Caco-2 cell lines. The anticancer activity and mechanism were also preliminarily explored using HepG2 and MDA-MB-231 cell lines. The results show that the supernatant of EF-ZA1107-06 has the highest scavenging rate of superoxide anion free radical from 40.78% to 59.61% and strongest ferrous ion chelating ability from 39.28% to 56.59%, while the lysate of EF-ZA1107-06 has the highest reducing activity, equivalent to 1.072 mmol/L equivalent cysteine, which is remarkably higher than that of LGG lysate (P<0.05). The inhibition of α-amylase and α-glucosidase activity confirms the antidiabetic activity of EF-ZA1107-06. Meanwhile, EF-ZA1107-06 can reduce oxidative damage caused by H2O2 to Caco-2 cells to a certain extent and inhibit the S phase and G2 phase of HepG2 cells, but only the S phase of MDA-MB-231 cells. The induction of the early apoptosis of HepG2 cells and MDA-MB-231 cells confirms the anticancer activity of EF-ZA1107-06.

Key words: Enterococcus faecalis, antioxidant capacity, anticancer activity, antidiabetic activity

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