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芒柄花素对脂多糖诱导的肺泡上皮细胞凋亡及炎症反应的抑制
作用
Δ
2 #
林 海 ,易金容 ,饶运帷(1.赣南医学院第一附属医院呼吸与危重医学科,江西 赣州 341000;2.赣州市
1
1*
妇幼保健院麻醉科,江西 赣州 341000)
中图分类号 R965 文献标志码 A 文章编号 1001-0408(2023)22-2721-06
DOI 10.6039/j.issn.1001-0408.2023.22.06
摘 要 目的 基于磷脂酰肌醇3激酶/蛋白激酶B(PI3K/Akt)信号通路,探讨芒柄花素对脂多糖(LPS)诱导的肺泡上皮细胞凋亡
及炎症反应的抑制作用。方法 体外培养肺癌人肺泡基底上皮细胞A549,分为对照组(不干预)、模型组(1 μg/mL LPS)、芒柄花素
不同浓度组(1 μg/mL LPS+6.25、12.5、25、50 μmol/L芒柄花素),检测各组细胞培养液中炎症因子(白细胞介素8、肿瘤坏死因子α)
水平和细胞活力。另取A549细胞分为对照组、模型组(1 μg/mL LPS)、LPS+25组(1 μg/mL LPS+25 μmol/L芒柄花素)、抑制剂组
(1 μg/mL LPS+20 μmol/L LY294002)、芒柄花素+抑制剂组(1 μg/mL LPS+25 μmol/L 芒柄花素+20 μmol/L LY294002)和芒柄花
素+激活剂组(1 μg/mL LPS+25 μmol/L芒柄花素+10 μmol/L SC79),检测各组细胞炎症因子分泌水平和mRNA表达水平、细胞凋亡
情况和PI3K/Akt信号通路关键蛋白表达情况。结果 与模型组比较,25 μmol/L的芒柄花素能显著降低细胞培养液中炎症因子水平,
显著升高细胞活力(P<0.05)。与对照组比较,模型组细胞中炎症因子的分泌水平和mRNA表达水平,细胞凋亡率,磷酸化Akt、
磷酸化PI3K蛋白的相对表达量均显著升高(P<0.05);与模型组比较,LPS+25组和抑制剂组细胞上述指标均显著降低(P<0.05);
与LPS+25组比较,芒柄花素+抑制剂组细胞上述指标均进一步降低,而芒柄花素+激活剂组细胞上述指标则显著升高(P<0.05)。
结论 芒柄花素能够抑制LPS诱导的肺泡上皮细胞凋亡并改善其炎症反应,上述作用与抑制PI3K/Akt信号通路有关。
关键词 芒柄花素;肺泡上皮细胞;脂多糖;磷脂酰肌醇3激酶/蛋白激酶B信号通路;凋亡;炎症反应
Inhibitory effects of formononetin on lipopolysaccharide-induced apoptosis and inflammatory response in
alveolar epithelial cells
LIN Hai ,YI Jinrong ,RAO Yunwei(1. Dept. of Respiratory and Critical Care Medicine, the First Affiliated
1
2
1
Hospital of Gannan Medical College, Jiangxi Ganzhou 341000, China;2. Dept. of Anesthesiology, Ganzhou
Maternal and Child Health Hospital, Jiangxi Ganzhou 341000, China)
ABSTRACT OBJECTIVE To investigate the inhibitory effects of formononetin on lipopolysaccharide (LPS)-induced apoptosis
and inflammatory response in alveolar epithelial cells through phosphoinositide 3-kinase (PI3K)/protein kinase B (Akt) signaling
pathway. METHODS Human lung cancer alveolar basal epithelial cells A549 were cultured in vitro and divided into control group
(no intervention), model group (1 μg/mL LPS), different concentrations of formononetin groups (1 μg/mL LPS+6.25, 12.5, 25,
50 μmol/L formononetin). The levels of inflammatory factors (interleukin-8, tumor necrosis factor- α) and cell viability were
detected in each group. Another A549 cells were divided into control group, model group (1 μg/mL LPS), LPS+25 group (1 μg/mL
LPS+25 μmol/L formononetin), inhibitor group (1 μg/mL LPS+20 μmol/L LY294002), formononetin+inhibitor group (1 μg/mL
LPS+25 μmol/L formononetin+20 μmol/L LY294002) and formononetin+activator group (1 μg/mL LPS+25 μmol/L formononetin+
10 μmol/L SC79). The secretion levels and mRNA expressions of inflammatory factors, cell apoptosis, and expressions of the key
proteins of PI3K/Akt signaling pathway were detected in each group. RESULTS Compared with model group, the levels of
inflammatory factors were decreased significantly after the intervention of 25 μmol/L of formononetin, and the cell viability was
increased significantly (P<0.05). Compared with the control group, the secretion levels and mRNA expressions of inflammatory
factors, apoptotic rate, and relative expressions of
Δ 基金项目 江西省省级科技计划项目(No.20192BAB205009);
江西省卫生健康委科技计划项目(No.202130701) phosphorylated Akt and phosphorylated PI3K of the model
*第一作者 主治医师,硕士。研究方向:呼吸感染及呼吸危重症。
group were increased significantly (P<0.05). Compared with
E-mail:xinyulinhai@163.com
the model group, the above indexes of the LPS+25 group and
# 通信作者 主治医师,硕士。研究方向:围手术期重要脏器保护、
器官功能损伤机制及防治。E-mail:yijinrong88@126.com the inhibitor group were decreased significantly (P<0.05).
中国药房 2023年第34卷第22期 China Pharmacy 2023 Vol. 34 No. 22 · 2721 ·