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1.陕西中医药大学 第一临床医学院,陕西 咸阳 712046
2.陕西中医药大学 基础医学院, 陕西 咸阳 712046
3.陕西中医药大学 附属医院,陕西 咸阳 712000
Received:02 October 2024,
Accepted:25 December 2024,
Published Online:27 December 2024,
Published:20 March 2025
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杨朝凯,第五永长,武阳洋等.洗心汤含药血清对Aβ25-35诱导的BV-2小胶质细胞极化的调控作用[J].中国实验方剂学杂志,2025,31(06):18-26.
YANG Chaokai,DIWU Yongchang,WU Yangyang,et al.Xixintang-medicated Serum Regulates Aβ25-35-induced Polarization of BV-2 Microglial Cells[J].Chinese Journal of Experimental Traditional Medical Formulae,2025,31(06):18-26.
杨朝凯,第五永长,武阳洋等.洗心汤含药血清对Aβ25-35诱导的BV-2小胶质细胞极化的调控作用[J].中国实验方剂学杂志,2025,31(06):18-26. DOI: 10.13422/j.cnki.syfjx.20250103.
YANG Chaokai,DIWU Yongchang,WU Yangyang,et al.Xixintang-medicated Serum Regulates Aβ25-35-induced Polarization of BV-2 Microglial Cells[J].Chinese Journal of Experimental Traditional Medical Formulae,2025,31(06):18-26. DOI: 10.13422/j.cnki.syfjx.20250103.
目的
2
通过体外研究,探索洗心汤(XXT)含药血清对
β
淀粉样蛋白(A
β
)
25-35
诱导的BV-2小胶质细胞极化的影响,以揭示该方在防治阿尔茨海默病中的潜在
机制,为临床治疗提供科学依据。
方法
2
将BV-2小胶质细胞传代培养后,使用细胞增殖和活性检测(CCK-8)法筛选出最适浓度的XXT含药血清和A
β
25-35
。实验设置空白组、模型组(浓度为40 μmol·L
-1
的A
β
25-35
)、XXT含药血清组(浓度为40 μmol·L
-1
的A
β
25-35
+10% XXT含药血清)和空白血清组(浓度为40 μmol·L
-1
的A
β
25-35
+10%空白血清处理组)。各组细胞孵育24 h后,采用免疫荧光法检测离子化钙结合适配分子1(IBA1)、CD16/32及CD206的表达;采用实时荧光定量聚合酶链式反应(Real-time PCR)检测CD206、CD163、诱导型一氧化氮合成(iNOS)、精氨酸酶-1(Arg-1) mRNA表达水平;通过酶联免疫吸附测定法(ELISA)检测NGF、iNOS、Arg-1的含量。采用硝酸还原酶法测定NO含量。
结果
2
与空白组比较,模型组IBA1、CD16/32表达显著升高(
P
<
0.01),CD206的表达明显降低(
P
<
0.05),iNOS mRNA表达水平显著上调(
P
<
0.01),含量明显增高(
P
<
0.05),CD206、CD163、Arg-1的mRNA表达水平明显下调(
P
<
0.05,
P
<
0.01),Arg-1、NGF含量明显降低(
P
<
0.05),NO含量明显升高(
P
<
0.05)。与模型组比较,XXT含药血清组IBA1,CD16/32表达明显降低(
P
<
0.05,
P
<
0.01),CD206的表达显著升高(
P
<
0.01);iNOS含量和mRNA表达水平明显下调(
P
<
0.05,
P
<
0.01),同时CD206、CD163、Arg-1的mRNA表达水平显著上调(
P
<
0.01),Arg-1、NGF含量明显升高(
P
<
0.05),NO含量明显降低(
P
<
0.05)。与模型组比较,空白血清组各指标差异无统计学意义。
结论
2
XXT含药血清可通过抑制M1型小胶质细胞极化并促进M2型极化,发挥抗炎和神经营养作用。
Objective
2
To investigate the effects of Xixintang (XXT)-medicated serum on the amyloid
β
-protein (A
β
)
25-35
-induced polarization of BV-2 microglial cells by a cell experiment and uncover the potential mechanisms of this formula in the prevention and treatment of Alzheimer's disease (AD), thus providing scientific evidence for the clinical application of XXT.
Methods
2
BV-2 microglial cells were subcultured. The optimal concentrations of XXT-medicated serum and A
β
25-35
were determined via the cell-counting kit-8 (CCK-8) assay. The cell experiment was carried out with the following groups: blank control, model (A
β
25-35
at 40 μmol·L
-1
), XXT-medicated serum (A
β
25-35
at 40 μmol·L
-1
+ 10% XXT-medicated serum), and blank serum (A
β
25-35
at 40 μmol·L
-1
+ 10% blank serum). After 24 hours of cell incubation, immunofluorescence was used to detect the expression of ionized calcium-binding adaptor molecule 1 (IBA1), CD16/32, and CD206. Real-time PCR was performed to measure the mRNA levels of CD206, CD163, inducible nitric oxide synthase (iNOS), and arginase 1 (Arg-1). Enzyme-linked immunosorbent assay (ELISA) was employed to quantify the levels of nerve growth factor (NGF), iNOS, and Arg-1. The nitric oxide (NO) concentration was determined via the nitrate reductase method.
Results
2
Compared with the blank control group, the model group showed increased expression of IBA1 and CD16/32 (
P
<
0.01), decreased expression of CD206 (
P
<
0.05), upregulation in the mRNA level (
P
<
0.01) and content (
P
<
0.05) of iNOS, downregulation in the mRNA levels of CD206, CD163, and Arg-1 (
P
<
0.05,
P
<
0.01), lowered levels of Arg-1 and NGF (
P
<
0.05), and an elevation in the NO level (
P
<
0.05). Compared with the model group, the XXT-medicated serum group exhibited reduced expression of IBA1 and CD16/32 (
P
<
0.05,
P
<
0.01) and increased expression of CD206 (
P
<
0.01). Both the content and mRNA level of iNOS were downregulated (
P
<
0.05,
P
<
0.01), while the mRNA levels of CD206, CD163, and Arg-1 were upregulated (
P
<
0.01) in the XXT-medicated serum group. In addition, the XXT-medicated seru
m group showed elevated levels of Arg-1 and NGF (
P
<
0.05) and a lowered level of NO (
P
<
0.05). The blank serum group showed no statistically significant differences in the measured parameters compared with the model group.
Conclusion
2
The XXT-medicated serum can inhibit the polarization toward the M1 phenotype and promote the polarization toward the M2 phenotype, exerting anti-inflammatory and neurotrophic effects.
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