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1.中国中医科学院 望京医院,北京 100102
2.中央民族大学,北京 100091
3.北京中医药大学,北京 100029
4.天津医科大学 朱宪彝纪念医院,天津市内分泌研究所, 国家卫健委 激素与发育重点实验室,天津市代谢性疾病重点实验室,天津 300314
任秋月,博士,从事中医药治疗内分泌疾病、肾病研究,E-mail:renyue7889@163.com
张宁,博士,主任医师,从事中医药治疗内分泌疾病、肾病研究,E-mail:znice3927@126.com; *
常柏,博士,主任医师,从事中西医结合治疗糖尿病及其并发症研究,E-mail:changbai1972@126.com
收稿日期:2021-10-09,
网络出版日期:2022-01-14,
纸质出版日期:2022-06-05
移动端阅览
任秋月,姚蓉飞,杨荣禄等.抵挡汤对高糖环境下泡沫细胞焦亡炎症级联反应的作用机制[J].中国实验方剂学杂志,2022,28(11):8-15.
REN Qiu-yue,YAO Rong-fei,YANG Rong-lu,et al.Mechanism of Didangtang Against Inflammatory Cascade Triggered by Foam Cell Pyroptosis in High-glucose Environment[J].Chinese Journal of Experimental Traditional Medical Formulae,2022,28(11):8-15.
任秋月,姚蓉飞,杨荣禄等.抵挡汤对高糖环境下泡沫细胞焦亡炎症级联反应的作用机制[J].中国实验方剂学杂志,2022,28(11):8-15. DOI: 10.13422/j.cnki.syfjx.20220604.
REN Qiu-yue,YAO Rong-fei,YANG Rong-lu,et al.Mechanism of Didangtang Against Inflammatory Cascade Triggered by Foam Cell Pyroptosis in High-glucose Environment[J].Chinese Journal of Experimental Traditional Medical Formulae,2022,28(11):8-15. DOI: 10.13422/j.cnki.syfjx.20220604.
目的
2
基于泡沫细胞焦亡探讨抵挡汤对其高糖环境下炎症级联反应的影响。
方法
2
采用氧化型低密度脂蛋白(ox-LDL,100 mg·L
-1
)诱导泡沫细胞焦亡模型,设置正常组(5.5 mmol·L
-1
葡萄糖)、泡沫细胞组(100 mg·L
-1
ox-LDL)、高糖组(33.3 mmol·L
-1
葡萄糖)、抵挡汤组(10%含药血清)、核苷酸寡聚化结构域样受体蛋白3(NLRP3)抑制剂(MCC950,10 nmol·L
-1
)组。分别采用乳酸脱氢酶(LDH)释放实验观察细胞膜损伤情况,免疫荧光法检测胱天蛋白酶-1(Caspase-1)的表达,蛋白免疫印迹法(Western blot)检测焦亡通路关键蛋白NLRP3、Caspase-1、消化道皮肤素D(GSDMD)、白细胞介素-1
β
(IL-1
β
)、白细胞介素-18(IL-18)的表达,酶联免疫吸附测定法(ELISA)检测细胞上清液中炎症因子IL-1
β
、IL-18、单核细胞趋化蛋白-1(MCP-1)、白细胞介素-1
α
(IL-1
α
)、肿瘤坏死因子-
α
(TNF-
α
)释放情况。
结果
2
与正常组比较,泡沫细胞组NLRP3、Caspase-1、GSDMD、IL-1
β
、IL-18表达显著上调(
P
<
0.01),炎症因子IL-1
β
、IL-18、MCP-1、IL-1
α
、TNF-
α
释放显著增加(
P
<
0.01);与泡沫细胞组相比,高糖组NLRP3、Caspase-1、GSDMD表达显著上调(
P
<
0.01),IL-1
β
、IL-18、MCP-1、IL-1
α
、TNF-
α
释放显著增加(
P
<
0.01),抵挡汤及NLRP3抑制剂MCC950均可抑制高糖导致的NLRP3、Caspase-1、GSDMD表达的增加,显著降低IL-1
β
、IL-18 、MCP-1、IL-1
α
、TNF-
α
的释放(
P
<
0.01)。
结论
2
抵挡汤可通过抑制高糖环境下NLRP3/Caspase-1通路诱导的泡沫细胞焦亡,减轻炎症级联反应。
Objective
2
To explore the mechanism of Didangtang (DDT) against the inflammatory cascade triggered by foam cell pyroptosis in high-glucose environment.
Method
2
Oxidized low density lipoprotein (ox-LDL, 100 mg·L
-1
) was used to induce pyroptosis of foam cells. The control group (5.5 mmol·L
-1
glucose), foam cell group (100 mg·L
-1
ox-LDL), high-glucose group (33.3 mmol·L
-1
glucose), DDT group (10% DDT-containing serum), and NOD-like receptor family pyrin domain-containing 3 (NLRP3) inhibitor group (MCC950, 10 nmmol·L
-1
) were designed. The cell membrane damage was observed by lactate dehydrogenase (LDH) release assay. The expression of cysteinyl aspartate-specific proteinase-1 (Caspase-1) was detected by immunofluorescence method, and expression of key proteins NLRP3, Caspase-1, gastermin D (GSDMD), interleukin-1
β
(IL-1
β
), and interleukin-18 (IL-18) in the pyroptosis pathway was determined by Western blot. The release of IL-18 and IL-1
β
, monocyte chemoattractant protein-1 (MCP-1), and tumor necrosis factor
α
(TNF-
α
) in cell supernatant was measured by enzyme-linked immunosorbent assay (ELISA).
Result
2
The expression of NLRP3, Caspase-1, and GSDMD was up-regulated (
P
<
0.01) and the release of IL-1
β
, IL-18, MCP-1, IL-1
α
, and TNF-
α
was increased (
P
<
0.01) in foam cell group compared with those in the control group. The expression of NLRP3, Caspase-1, and GSDMD was higher (
P
<
0.01) and the release of inflammatory factors was more (
P
<
0.01) in the high-glucose group than in the foam cell group. DDT and MCC950 can inhibit expression of NLRP3, Caspase-1, GSDMD and reduce the release of IL-1
β
, IL-18, MCP-1, IL-1
α
, and TNF-
α
.
Conclusion
2
DDT can suppress the pyroptosis of foam cells induced by NLRP3/Caspase-1 pathway in high-glucose environment and thereby alleviate the inflammatory cascade.
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