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蒙花苷体内外抗肺纤维化作用及其机制研究
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黄梨婷 ,王珠强,王依婷,范卫锋,董更婷,彭伟文(广州中医药大学附属中山中医院药学部,广东 中山
528400)
中图分类号 R965 文献标志码 A 文章编号 1001-0408(2023)03-0333-07
DOI 10.6039/j.issn.1001-0408.2023.03.15
摘 要 目的 考察蒙花苷的体内外抗纤维化作用,并初步探讨其作用机制。方法 将C57BL/6J小鼠随机分为正常组(羧甲基纤
维素钠)、模型组(羧甲基纤维素钠)、阳性对照组(吡非尼酮,200 mg/kg)和蒙花苷低、高剂量组(12.5、25 mg/kg),每组8只。除正常
组外,其余各组小鼠均制备肺纤维化模型。造模结束后,灌胃给药,每天1次,连续14 d。观察小鼠一般情况,测定其肺指数,检测
其血清中肿瘤坏死因子α(TNF-α)、转化生长因子β1 (TGF-β1 )水平以及肺组织中白细胞介素6(IL-6)水平;采用苏木素-伊红(HE)
染色及Masson染色观察其肺组织病理学变化,并参照Ashcroft评分标准进行肺纤维化评分;检测其肺组织中α-平滑肌肌动蛋白
(α-SMA)、Ⅰ型胶原蛋白(Collagen Ⅰ)、磷酸化胞外信号调节激酶(p-ERK1/2)、TGF-β1的表达水平。使用TGF-β1刺激人胚肺成纤
维细胞HFL1建立体外肺纤维化模型,实验设置正常组、模型组和蒙花苷低、中、高浓度组(3.7、7.4、14.8 mg/L),培养48 h后,检测
细胞中α-SMA、Collagen Ⅰ、p-ERK1/2蛋白表达水平。结果 在体内实验中,与正常组比较,模型组小鼠肺指数和TNF-α、TGF-β1、
IL-6水平均显著升高(P<0.01);肺泡中出现大量炎症浸染及细胞纤维化等病变,且有大量胶原蛋白沉积,HE染色和Masson染色
评分均显著升高(P<0.01);肺组织中α-SMA、Collagen Ⅰ、p-ERK1/2及TGF-β1蛋白表达均显著上调(P<0.01)。与模型组比较,
蒙花苷高剂量组小鼠上述指标均显著改善(P<0.05或P<0.01),蒙花苷低剂量组大部分指标(除肺指数外)均显著改善(P<0.05
或P<0.01)。在体外实验中,与空白组比较,模型组细胞出现密度变大、明显增殖等变化,细胞中α-SMA、Collagen Ⅰ和p-ERK1/2
蛋白表达均显著上调(P<0.05或P<0.01)。与模型组比较,蒙花苷各浓度组细胞密度变小,形态逐渐恢复正常;蒙花苷高浓度组
细胞中上述蛋白及蒙花苷中浓度组细胞中p-ERK1/2蛋白表达均显著下调(P<0.05或P<0.01)。结论 蒙花苷可能通过调控ERK
及炎症相关通路,减轻炎症反应,从而发挥抗肺纤维化作用。
关键词 蒙花苷;肺纤维化;胞外信号调节激酶通路;炎症通路
Study on the anti-pulmonary fibrosis effect of linarin in vivo and in vitro and its mechanism
HUANG Liting,WANG Zhuqiang,WANG Yiting,FAN Weifeng,DONG Gengting,PENG Weiwen(Dept. of
Pharmacy, Zhongshan Hospital of Traditional Chinese Medicine Affiliated to Guangzhou University of
Traditional Chinese Medicine, Guangdong Zhongshan 528400, China)
ABSTRACT OBJECTIVE To investigate the anti-pulmonary fibrosis effect of linarin in vivo and in vitro, and investigate its
mechanism preliminarily. METHODS C57BL/6J mice were randomly divided into normal group (carboxymethylcellulose sodium),
model group (carboxymethylcellulose sodium), positive control group (pirfenidone, 200 mg/kg), linarin low-dose and high-dose
groups (12.5, 25 mg/kg), with 8 mice in each group. Except for normal group, pulmonary fibrosis model was induced in other
groups. After modeling, they were given relevant medicine intragastrically, once a day, for consecutive 14 d. The general situation
of mice was observed, and their lung indexes were measured; the levels of tumor necrosis factor-α (TNF-α) and transforming
growth factor-β1 (TGF-β1 ) in serum and interleukin-6 (IL-6) in lung tissue were determined. Hematoxylin-eosin (HE) staining and
Masson staining were used to observe the histopathological morphology of lung. The pulmonary fibrosis was scored according to
Ashcroft score standard. The expressions of α-smooth muscle actin (α-SMA) and (type Ⅰ collagen, Collagen Ⅰ), phosphorylated
extracellular signal-regulated kinase (p-ERK1/2) and TGF-β1 in lung tissues were detected. HFL1 cells were stimulated by TGF-
β1 to form pulmonary fibrosis model in vitro, which were divided into normal group, model group and linarin low-, medium- and
high-concentration groups (3.7, 7.4, 14.8 mg/L). After being cultured for 48 h, the protein expressions of α-SMA, Collagen Ⅰ
and p-ERK1/2 in HFL1 cells were detected. RESULTS In
Δ 基金项目 中山市第三批社会公益与基础研究专项(医疗卫生 vivo, compared with normal group, the lung index of model
重点项目)(No.2020B3007) group and the levels of TNF- α, TGF- β1 and IL-6 were
*第一作者 硕士研究生。研究方向:中药制剂开发与研究。电 significantly increased (P<0.01). There were a large number
话:0760-89980219。E-mail:812416031@qq.com
of inflammatory infiltration and cellular fibrosis lesions in the
# 通信作者 主任中药师,硕士生导师。研究方向:中药制剂开发
与研究。电话:0760-89980219。E-mail:1432340131@qq.com alveoli, and a large number of collagen depositions. The
中国药房 2023年第34卷第3期 China Pharmacy 2023 Vol. 34 No. 3 · 333 ·