Journal of Shandong First Medical Unversity & Shandong Academy of Medical Sciences››2021,Vol. 42››Issue (11): 801-806.DOI:10.3969/j.issn.2097-0005.2021.11.001

• Basic Researches •Next Articles

Effect of Sijunzi granules on STC-1 cell apoptosis induced by palmitic acid

Ping Yuan(), Xu Zhang, Baolu Tang, Xiaoyu Qi, Mingyue Ma, Shuguo Zheng()

  1. Wannan Medical College,Wuhu 241002,China
  • Received:2021-05-25Online:2021-11-25Published:2021-12-31
  • Contact:Shuguo Zheng

四君子颗粒抑制棕榈酸诱导的STC-1细胞凋亡

袁萍(), 张旭, 唐保露, 戚小宇, 马明悦, 郑书国()

  1. 皖南医学院药理学教研室,安徽 芜湖 241002
  • 通讯作者:郑书国
  • 作者简介:袁萍,硕士研究生,研究方向:临床药理学,E-mail:740331265@qq.com
  • 基金资助:
    安徽省高校自然betway必威亚洲 重点项目(KJ2015A192);中国医药教育协会孙思邈中医药科研专项课题(2016SKT-M033);国家级大学生创新创业训练计划(201910368012)

Abstract: Objective

To observe the effect of Sijunzi granules on STC-1 cell (small intestine endocrine cell line) apoptosis induced by palmitic acid and the possible mechanisms implicated.

Methods

SD rats were given Sijunzi granules (5.25 g/kg, 10.5 g/kg) intragastrically for 7 days to prepare Sijunzi granules-containing serum. Following pre-incubation with Sijunzi granules-containing serum for 24 h, STC-1 cells were exposed to palmitic acid (0.4 mmol/L) for 72 h. Cell viability was detected by CCK8 assay and cell apoptosis was evaluated by flow cytometry.The levels of caspase-3 and caspase-9 activity were measured colorimetrically using commercially available kits and the protein contents of p-PERK, CHOP, Bcl-2 and Bax were determined by Western blot analysis.

Results

Pre-incubation with Sijunzi granules-containing serum resulted in a significant alleviation of STC-1 cell injury and apoptosis induced by palmitic acid (P< 0.05 orP< 0.01). The levels of p-PERK, CHOP and Bax protein and the activities of caspase-3 and caspase-9 were markedly down-regulated in cells treated with Sijunzi granules-containing serum (P <0.05 orP< 0.01), while the level of Bcl-2 protein was up-regulated evidently (P< 0.05 orP< 0.01).

Conclusion

Sijunzi granules can ameliorate palmitic acid induced injury and apoptosis in STC-1 cells, which may be derived from suppression of endoplasmic reticulum stress-related signaling pathway.

Key words:Sijunzi granules,type 2 diabetes,cell apoptosis,incretin,endoplasmic reticulum stress

摘要: 目的

观察四君子颗粒对棕榈酸诱导的小鼠小肠内分泌细胞株STC-1细胞凋亡的影响,并探讨其可能机制。

方法

采用血清药理学方法,灌胃给予四君子颗粒(5.25 g/kg、10.5 g/kg),连续7 d,制备含药大鼠血清。培养STC-1细胞,与含药血清预孵24 h后暴露于棕榈酸(0.4 mmol/L)72 h。CCK8法检测STC-1细胞活力,流式细胞术检测细胞凋亡水平,比色法检测caspase-3以及caspase-9活性, Western blot法检测内质网应激相关蛋白CHOP、p-PERK及凋亡相关蛋白Bcl-2、Bax蛋白水平。

结果

与四君子颗粒含药血清预孵可明显减轻棕榈酸诱导的STC-1细胞损伤,降低细胞凋亡率(P< 0.05或P< 0.01),并使p-PERK、CHOP及Bax蛋白降低(P< 0.05或P< 0.01),Bcl-2蛋白水平升高(P< 0.01)。同时,四君子颗粒可明显抑制棕榈酸诱导的凋亡蛋白酶caspase-3和caspase-9活化(P< 0.05或P< 0.01)。

结论

四君子颗粒可明显抑制棕榈酸诱导的STC-1细胞凋亡,其机制可能与抑制内质网应激信号通路及调控Bcl-2家族蛋白表达有关。

关键词:四君子颗粒,2型糖尿病,细胞凋亡,肠促胰素,内质网应激

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