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1.云南中医药大学中药学院(云南 昆明 650500)
2.云南经济管理学院医学院(云南 昆明 650033)
崔白梅,女,硕士研究生,主要从事中药药理及应用研究
李秀芳,教授,博士研究生导师;E-mail:sofinelxf@163.com
收稿日期:2024-09-30,
纸质出版日期:2025-08-10
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崔白梅,朱紫陌,赵显芳,等.荆防败毒散减轻小鼠拟病毒性肺炎模型肺损伤的作用机制[J].上海中医药杂志,2025,59(8):23-35.
CUI Baimei,ZHU Zimo,ZHAO Xianfang,et al.Mechanism of Jingfang Baidu Powder in alleviating lung injury in a mouse model of viral pneumonia[J].Shanghai Journal of Traditional Chinese Medicine,2025,59(8):23-35.
崔白梅,朱紫陌,赵显芳,等.荆防败毒散减轻小鼠拟病毒性肺炎模型肺损伤的作用机制[J].上海中医药杂志,2025,59(8):23-35. DOI: 10.16305/j.1007-1334.2025.z20240930002.
CUI Baimei,ZHU Zimo,ZHAO Xianfang,et al.Mechanism of Jingfang Baidu Powder in alleviating lung injury in a mouse model of viral pneumonia[J].Shanghai Journal of Traditional Chinese Medicine,2025,59(8):23-35. DOI: 10.16305/j.1007-1334.2025.z20240930002.
目的
2
探讨多肌胞苷酸[poly(I:C)]滴鼻刺激诱导小鼠拟病毒性肺炎模型的损伤机制,并利用该模型研究荆防败毒散减轻肺损伤的作用机制。
方法
2
①选用雄性C57BL/6小鼠,随机分为对照(Control)组、模型[poly(I:C)]组。Control组缓慢滴鼻磷酸盐缓冲液(PBS,2 000 μL/kg),poly(I:C)组滴鼻等体积的poly(I:C),连续5 d。分别于滴鼻后1 d、3 d、5 d对各组动物损伤情况进行分析;②雄性C57BL/6小鼠随机分为Control组、poly(I:C)组(10 g/L)、利巴韦林组(LBWL,0.15 g/kg)、荆防败毒散低剂量组(JFBDS-L,24 g/kg)和高剂量组(JFBDS-H,48 g/kg)。动物于滴鼻poly(I:C)6 h后灌胃给予相应干预,连续滴鼻刺激加药物干预3 d后考察药物是否具有减轻炎症作用。采用酶联免疫吸附分析试剂盒(ELISA)法检测炎症因子水平;苏木精-伊红(HE)染色观察小鼠肺组织病理形态变化;转录组测序法分析poly(I:C)滴鼻刺激3 d时小鼠肺组织差异表达基因;Western blot法对核苷酸结合寡聚化结构域蛋白(NOD)样受体信号通路的关键蛋白进行验证。
结果
2
①与Control组相比,随着poly(I:C)滴鼻次数的增加,poly(I:C)组滴鼻3 d、5 d后鼻腔灌洗液中的促炎性细胞因子肿瘤坏死因子-α(TNF-α)、γ干扰素(IFN-γ)和肺泡灌洗液中的TNF-α水平明显升高(
P
<
0.05,
P
<
0.01),白细胞介素-6(IL-6)水平变化不明显(
P
>
0.05),抗炎细胞因子白细胞介素-10(IL‑10)水平先升高后降低(
P
<
0.05,
P
<
0.01,
P
<
0.001);血清中TNF-α、IL-6水平呈逐渐升高趋势(
P
<
0.01),抗炎细胞因子IL-10水平明显降低(
P
<
0.05,
P
<
0.01)。在poly(I:C)刺激1 d、3 d、5 d时,肺泡壁间隔出现了不同程度的增厚、水肿,滴鼻3 d、5 d造成的损伤较为严重。转录组学分
析显示,poly(I:C)刺激后3 d肺组织差异表达基因有543个上调基因,37个下调基因,主要涉及NOD样受体信号通路等。②poly(I:C)滴鼻同时给予荆防败毒散干预3 d后,肺泡灌洗液中的TNF-α水平明显降低(
P
<
0.05,
P
<
0.01),抗炎细胞因子IL-10的水平有上升趋势(
P
>
0.05);小鼠肺泡壁间隔增厚得到改善;NOD样受体信号通路关键蛋白的表达水平降低(
P
<
0.05,
P
<
0.01,
P
<
0.001)。
结论
2
poly(I:C)滴鼻刺激小鼠可较好模拟病毒性肺炎病理损伤,其病理学机制主要涉及NOD样受体信号通路的过度激活。荆防败毒散能抑制poly(I:C)诱导小鼠拟病毒性肺炎感染炎症因子的释放,保护肺组织结构完整性,调控NOD样受体信号通路蛋白表达,从而发挥减轻小鼠病毒性呼吸道感染所致肺损伤的作用。
Objective
2
To investigate the injury mechanism of polyinosinic acid-polycytidylic acid [poly (I:C)] nasal drip stimulation-induced mouse model of viral pneumonia, and to study the mechanism of Jingfang Baidu Powder in alleviating lung injury.
Methods
2
①C57BL/6 mice were randomly divided into Control group, Model [poly(I:C)] group. The Control group was given phosphate buffer (PBS, 2 000 μL/kg) by nasal drip, and the poly(I:C) group was given poly(I:C) of the same volume by nasal drip for 5 consecutive days. The injury of the animals in each group was analyzed at 1 d, 3 d and 5 d after nasal drip. ②Male C57BL/6 mice were randomly divided into Control group、poly(I:C)(10 g/L) group、ribavirin (LBWL, 0.15 g/kg)group、low-dose (JFBDS-L, 24 g/kg) and high-dose Jingfang Baidu Powder (JFBDS-H, 48 g/kg) groups. After intranasal poly(I:C) administration for 6 h, the animals were given corresponding interventions by intragastric administration. After continuous nasal stimulation and drug intervention for 3 d, whether the drug had the effect of reducing inflammation was investigated. The contents of inflammatory factors was detected by enzyme-linked immunosorbent assay (ELISA) kit. Hematoxylin-eosin (HE) staining was used to observe the pathological changes of lung tissue in mice. Transcriptome sequencing method was used to analyze the differentially expressed genes in lung tissues of mice after poly(I:C) nasal stimulation for 3 d. The key proteins of nucleotide-binding oligomerization domain protein (NOD) like receptor signaling pathway were investigated by Western blot.
Results
2
①Compared with the Control group, with the frequency of poly(I:C) nasal drops increased, the levels of pro-inflammatory factors tumor necrosis factor-α (TNF-α) and interferon-γ (IFN-γ) in nasal lavage fluid and TNF-α in alveolar lavage fluid increased significantly (P<0.05, P<0.01), while the level of interleukin-6 (IL-6) did not change obviously (P>0.05), and the level of anti-inflammatory factor interleukin-10 (IL-10) increased first and then decreased (P<0.05, P<0.01,P<0.001). The levels of TNF-α and IL-6 in serum increased gradually (P<0.01), and the level of anti-inflammatory factor IL-10 decreased significantly (P<0.05, P<0.01). After poly(I:C) stimulation at 1 d, 3 d and 5 d, the alveolar septum thickened to different degrees, and the injury was more serious by nasal drops for 3 d and 5 d. Transcriptomic analysis showed that 543 genes were up-regulated and 37 genes were down-regulated in lung tissue 3 d after poly(I:C) stimulation, which were mainly involved in NOD-like receptor signaling pathway. ②The level of TNF-α in alveolar lavage fluid was significantly decreased (P<0.05, P<0.01), and the level of anti-inflammatory factor IL-10 was gradually increased (P>0.05) after poly(I:C) nasal drip and Jingfang Baidu Powder intervention for 3 d; The thickening of alveolar wall septum in mice was improved; and the expression levels of key proteins in NOD-like receptor signaling pathway were decreased (P<0.05, P<0.01, P<0.001). Conclusions Poly(I:C) intranasal stimulation can mimic viral pneumonia model well. The pathological mechanism is mainly involved in the overactivation of NOD-like receptor signaling pathway. Jingfang Baidu Powder can inhibit the release of inflammatory factors induced by poly(I:C) in mice with viral pneumonia infection, protect the lung tissue structural integrity, regulate the protein expression in the NOD-like receptor signaling pathway, thereby play a role in reducing the lung injury caused by viral respiratory tract infections in mice.
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