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1.湖南中医药大学 第一附属医院,长沙 410007
2.宁乡市人民医院,湖南 宁乡 410600
Received:19 December 2024,
Published Online:06 March 2025,
Published:05 July 2025
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阳玉婷,吴东升,曹晖等.芍药汤含药血清介导Fas/FasL信号通路抑制脂多糖诱导的Caco-2细胞炎症及凋亡[J].中国实验方剂学杂志,2025,31(13):62-69.
YANG Yuting,WU Dongsheng,CAO Hui,et al.Shaoyaotang Containing Serum Mediates Fas/FasL Pathway to Inhibit Lipopolysaccharide Induced Inflammation and Apoptosis of Caco-2 Cells[J].Chinese Journal of Experimental Traditional Medical Formulae,2025,31(13):62-69.
阳玉婷,吴东升,曹晖等.芍药汤含药血清介导Fas/FasL信号通路抑制脂多糖诱导的Caco-2细胞炎症及凋亡[J].中国实验方剂学杂志,2025,31(13):62-69. DOI: 10.13422/j.cnki.syfjx.20250404.
YANG Yuting,WU Dongsheng,CAO Hui,et al.Shaoyaotang Containing Serum Mediates Fas/FasL Pathway to Inhibit Lipopolysaccharide Induced Inflammation and Apoptosis of Caco-2 Cells[J].Chinese Journal of Experimental Traditional Medical Formulae,2025,31(13):62-69. DOI: 10.13422/j.cnki.syfjx.20250404.
目的
2
探讨不同浓度芍药汤含药血清激活肿瘤坏死因子(TNF)受体超族成员6(Fas)/Fas配体(FasL)信号通路抑制细胞凋亡对脂多糖(LPS)诱导人结直肠上皮腺癌细胞(Caco-2)炎症的影响。
方法
2
将Caco-2细胞分为对空白组,模型组(LPS,10 mg·L
-1
),芍药汤含药血清5%、10%、15%、20%组,Fas抑制剂组(KR-33493,20 mmol·L
-1
)。除空白组外,其他组用10 mg·L
-1
LPS刺激培养24 h制备细胞炎症模型,造模成功后,空白组、Fas抑制剂组和模型组给予空白血清,芍药汤含药血清组分别加入相应浓度含药血清处理24 h,Fas抑制剂组给予KR-33493预处理1 h。细胞增殖与活性检测-8(CCK-8)法检测各组细胞存活率;酶联免疫吸附测定法(ELISA)检测白细胞介素-6(IL-6)、IL-1
β
、肿瘤坏死因子-
α
(TNF-
α
)含量;流式细胞术检测细胞凋亡水平;蛋白免疫印迹法(Western blot)检测组织Fas、FasL、胱天蛋白酶-3(Caspase-3)、Caspase-9、B淋巴细胞瘤-2(Bcl-2)、Bcl-2相关X蛋白(Bax)蛋白表达水平;实时荧光定量聚合酶链式反应(Real-time PCR)检测组织Fas、FasL、Caspase-3、Caspase-9、Bcl-2、Bax mRNA表达水平。
结果
2
实验结果中,与空白组比较,模型组细胞存活率显著下降(
P
<
0.01);与模型组比较,5%芍药汤含药血清组差异无统计学意义,10%、15%、20%芍药汤含药血清组细胞存活率显著增高(
P
<
0.01)。由于5%芍药汤含药血清组与模型组差异无统计学意义,故后续研究选取10%、15%、20%芍药汤含药血清进行实验。与空白组比较,模型组IL-6、IL-1
β
、TNF-
α
含量均显著增高(
P
<
0.01);细胞凋亡率显著升高(
P
<
0.01),模型组Fas、FasL、Caspase-3、Caspase-9、Bax的蛋白及mRNA表达水平均升高(
P
<
0.01),Bcl-2蛋白及mRNA表达水平降低(
P
<
0.01);与模型组比较,Fas抑制剂组及10%、15%、20%芍药汤含药血清组IL-6、IL-1
β
、TNF-
α
含量均显著降低(
P
<
0.01),Fas抑制剂组及10%、15%、20%芍药汤含药血清组凋亡率显著降低(
P
<
0.01),Fas抑制剂组及各芍药汤含药血清组Fas、FasL、Caspase-3、Caspase-9、Bax的蛋白及mRNA表达水平均明显降低(
P
<
0.05,
P
<
0.01),Bcl-2蛋白及mRNA表达水平明显升高(
P
<
0.05,
P
<
0.01),与10%芍药汤含药血清组比较,15%、20%芍药汤含药血清组IL-6、IL-1
β
、TNF-
α
含量均降低(
P
<
0.05,
P
<
0.01),15%、20%芍药汤含药血清组凋亡率明显降低(
P
<
0.05,
P
<
0.01),15%、20%芍药汤含药血清组Fas、FasL、Caspase-3、Caspase-9、Bax的蛋白及mRNA表达水平均降低(
P
<
0.05,
P
<
0.01),Bcl-2蛋白及mRNA表达水平升高(
P
<
0.05,
P
<
0.01)。
结论
2
芍药汤含药血清能减少LPS干预下Caco-2细胞炎症因子的含量,下调Fas、FasL、Caspase-3、Caspase-9、Bax蛋白及mRNA表达水平,上调Bcl-2蛋白及mRNA表达水平,其作用机制可能与其调控Fas/FasL信号通路,抑制溃疡性结肠炎肠上皮细胞凋亡有关。
Objective
2
To investigate the effects of different concentrations of Shaoyaotang-containing serum on lipopolysaccharide (LPS)-induced inflammation of human colorectal adenocarcinoma (Caco-2) cells by inhibiting apoptosis via activating the tumor necrosis factor (TNF) receptor superfamily member 6 (Fas)/Fas ligand (FasL) pathway.
Methods
2
Caco-2 cells were allocated into blank, model (LPS, 10 mg·L
-1
), Shaoyaotang-containing serum (5%, 10%, 15%, 20%), and Fas inhibitor (KR-33493, 20 mmol·L
-1
) groups. Except the blank group, the other groups were stimulated with 10 mg·L
-1
LPS for 24 h for the modeling of inflammation. After successful modeling, the blank, Fas inhibitor, and model groups were treated with blank serum, and the Shaoyaotang-containing serum groups were treated with the serum samples at corresponding concentrations for 24 h. The Fas i
nhibitor group was subjected to KR-33493 pretreatment for 1 h. Cell proliferation and viability were examined by the cell-counting kit-8 (CCK-8) method. The levels of interleukin (IL)-6, IL-1
β
, and TNF-
α
were measured by enzyme-linked immunosorbent assay. Apoptosis was detected by flow cytometry. The protein and mRNA levels of Fas, FasL, cysteinyl aspartate-specific proteinase (Caspase)-3, Caspase-9, B-cell lymphoma 2 (Bcl-2), and Bcl-2-associated X protein (Bax) were determined by Western blot and Real-time fluorescence quantitative polymerase chain reaction (Real-time PCR), respectively.
Results
2
Compared with the blank group, the model group presented a decrease in cell survival rate (
P
<
0.01). Compared with that in the model group, the cell survival rate showed no significant change in the 5% Shaoyaotang-containing serum group but increased in the 10%, 15%, and 20% Shaoyaotang-containing serum groups (
P
<
0.01). Since there was no statistical difference between the 5% Shaoyaotang-containing serum group and the model group, 10%, 15%, and 20% Shaoyaotang-containing sera were selected for the follow-up study. Compared with the blank group, the model group showed risen levels of IL-6, IL-1
β
, and TNF-
α
(
P
<
0.01), an increased apoptosis rate (
P
<
0.01), up-regulated protein and mRNA levels of Fas, FasL, Caspase-3, Caspase-9, and Bax (
P
<
0.01), and down-regulated protein and mRNA levels of Bcl-2 (
P
<
0.01). Compared with the model group, the Fas inhibitor group and the 10%, 15%, and 20% Shaoyaotang-containing serum groups showed declined levels of IL-6, IL-1
β
, and TNF-
α
(
P
<
0.01), decreased apoptosis rates (
P
<
0.01), down-regulated protein and mRNA levels of Fas, FasL, Caspase-3, Caspase-9, and Bax (
P
<
0.05,
P
<
0.01), and up-regulated protein and mRNA levels of Bcl-2 (
P
<
0.05,
P
<
0.01). In addition, the 15% and 20% Shaoyaotang-containing serum groups had lower levels of IL-6, IL-1
β
, and TNF-
α
(
P
<
0.05,
P
<
0.01), lower apoptosis rates (
P
<
0.05,
P
<
0.01), lower protein and mRNA levels of Fas, FasL, Caspase-3, Caspase-9, and Bax (
P
<
0.05,
P
<
0.01), and higher protein and mRNA levels of Bcl-2 (
P
<
0.05,
P
<
0.01) than the 10% Shaoyaotang-containing serum group.
Conclusion
2
The Shaoyaotang-containing serum can reduce the content of inflammatory factors in Caco-2 cells, down-regulate the protein and mRNA levels of Fas, FasL, Caspase-3, Caspase-9, and Bax, and up-regulate the protein and mRNA levels of Bcl-2 under the intervention of LPS by regulating the Fas/FasL pathway and inhibiting the apoptosis of intestinal epithelial cells in ulcerative colitis.
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