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1.中国中医科学院 中药研究所,北京 100700
2.黑龙江中医药大学,哈尔滨 150040
刘雅清,在读硕士,从事中药药理学研究,E-mail:991106949@qq.com
冯雪,博士,助理研究员,从事中药药理学、中药新药及保健食品研发,E-mail:15227180242@163.com;
杨伟鹏,博士,研究员,博士生导师,从事中药药理学研究,E-mail:wpyang@icmm.ac.cn
收稿日期:2022-06-20,
网络出版日期:2022-08-31,
纸质出版日期:2023-04-05
移动端阅览
刘雅清,刘滨,马旭冉等.黄芩汤对LPS诱导的RAW264.7炎症细胞的抗炎作用[J].中国实验方剂学杂志,2023,29(07):20-28.
LIU Yaqing,LIU Bin,MA Xuran,et al.Anti-inflammatory Effect of Huangqintang on LPS-induced RAW264.7 Inflammatory Cells[J].Chinese Journal of Experimental Traditional Medical Formulae,2023,29(07):20-28.
刘雅清,刘滨,马旭冉等.黄芩汤对LPS诱导的RAW264.7炎症细胞的抗炎作用[J].中国实验方剂学杂志,2023,29(07):20-28. DOI: 10.13422/j.cnki.syfjx.20221704.
LIU Yaqing,LIU Bin,MA Xuran,et al.Anti-inflammatory Effect of Huangqintang on LPS-induced RAW264.7 Inflammatory Cells[J].Chinese Journal of Experimental Traditional Medical Formulae,2023,29(07):20-28. DOI: 10.13422/j.cnki.syfjx.20221704.
目的
2
以RAW264.7细胞为炎症模型,探究黄芩汤的抗炎作用机制。
方法
2
制备黄芩汤,筛选对RAW264.7细胞的安全剂量;将RAW264.7细胞接种于24孔板中,先后加入黄芩汤和脂多糖(LPS),分别采用Griess法和酶联免疫吸附测定法(ELISA)测定一氧化氮(NO)和白细胞介素-6(IL-6)、肿瘤坏死因子-
α
(TNF-
α
)、前列腺素E
2
(PGE
2
)的含量;将RAW264.7细胞接种于6孔板中,设空白组、LPS组、LPS+黄芩汤组、核转录因子-
κ
B p65(NF-
κ
B p65)抑制剂(PDTC)组、p38丝裂原活化蛋白激酶(p38 MAPK)抑制剂(SB203580)组、细胞外信号调节激酶(ERK)抑制剂(PD98059)组、c-Jun氨基末端激酶(JNK)抑制剂(SP600125)组、Janus酪氨酸蛋白激酶(JAK)抑制剂(AG490)组,先后加入相应的抑制剂和黄芩汤,并经LPS刺激后,提取RNA和蛋白,分别采用实时荧光定量聚合酶链式反应(Real-time PCR)和蛋白免疫印迹法(Western blot)检测NF-
κ
B p65、p38 MAPK、ERK、JNK和JAK mRNA及蛋白的表达水平,探究黄芩汤通过调控NF-
κ
B、丝裂原活化蛋白激酶(MAPK)和JAK/信号转导及转录激活因子(STAT)信号通路发挥抗炎作用的机制。
结果
2
与空白组比较,LPS刺激后,模型组细胞中NO、IL-6、TNF-
α
、PGE
2
的浓度明显增加(
P
<
0.05,
P
<
0.01),与模型组比较,加入黄芩汤后,NO、IL-6、TNF-
α
、PGE
2
分泌量有减少趋势(
P
<
0.05,
P
<
0.01);与空白组比较,模型组细胞内p38 MAPK、ERK、JNK、JAK和NF-
κ
B p65 mRNA及总蛋白表达明显升高(
P
<
0.05,
P
<
0.01),与模型组比较,黄芩汤孵育后,炎症细胞内p38 MAPK、ERK、JNK、JAK和NF-
κ
B p65总蛋白及mRNA的表达明显降低(
P
<
0.05,
P
<
0.01);同时各抑制剂组细胞内NF-
κ
B p65总蛋白及mRNA表达均有下降趋势(
P
<
0.05,
P
<
0.01)。
结论
2
黄芩汤能够通过NF-
κ
B、MAPK和JAK/STAT信号通路抑制炎症反应。
Objective
2
To explore the anti-inflammatory mechanism of Huangqintang based on the inflammation model in RAW264.7 cells.
Method
2
Huangqintang was prepared and the safe dose to RAW264.7 cells was screened out. The RAW264.7 cells were seeded in 24-well plates and incubated with Huangqintang and lipopolysaccharide (LPS), successively. The concentrations of nitric oxide (NO), interleukin (IL)-6, tumor necrosis factor (TNF)-
α
, and prostaglandin E
2
(PGE
2
) were measured by Griess assay and enzyme-linked immunosorbent assay (ELISA), respectively. Meanwhile, RAW264.7 cells were inoculated in 6-well plates, and normal group, LPS group, LPS+Huangqintang group, nuclear factor-
κ
B (NF-
κ
B) p65 inhibitor PDTC group, p38 mitogen-activated protein kinase (MAPK) inhibitor SB203580 group, extracellular signal-regulated kinase (ERK) inhibitor PD98059 group, c-Jun N-terminal kinase (JNK) inhibitor SP600125 group, and Janus kinase (JAK) inhibitor AG490 group were set up. After the cells were incubated with corresponding inhibitors and Huangqintang and stimulated by LPS, RNA and protein were extracted. The mRNA and protein expression levels of NF-
κ
B p65, p38 MAPK, ERK, JNK, and JAK were detected by Real-time fluorescence-based quantitative polymerase chain reaction (Real-time PCR) and Western blot, respectively, to explore the anti-inflammatory mechanism of Huangqintang by regulating the NF-
κ
B, MAPK, and JAK/signal transducer and activator of transcription protein (STAT) signaling pathways.
Result
2
After stimulation with LPS, the concentrations of NO, IL-6, TNF-
α
, and PGE
2
in the cells of the model group increased significantly(
P
<
0.05,
P
<
0.01). Compare with the model group, after incubation with Huangqintang, the secretion of NO, IL-6, TNF-
α
, and PGE
2
showed a downward trend (
P
<
0.05,
P
<
0.01). Compared with the normal group, the model group showed increased mRNA expression of p38 MAPK, ERK, JNK, JAK, and NF-
κ
B p65 and total protein expression in cells after stimulation with LPS (
P
<
0.05,
P
<
0.01). Compare with the model group,after incubation with Huangqintang, the total protein and mRNA expression of p38 MAPK, ERK, JNK, JAK, and NF-
κ
B p65 in inflammatory cells decreased (
P
<
0.05,
P
<
0.01). Meanwhile, the expression of NF-
κ
B p65 total protein and mRNA in each inhibitor group showed a downward trend (
P
<
0.05,
P
<
0.01).
Conclusion
2
Huangqintang can inhibit the inflammatory response through the NF-
κ
B, MAPK, and JAK-STAT signaling pathways.
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