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Apelin-13对脂多糖诱导大鼠肺微血管内皮细胞炎性因子表达的影响及机制研究 被引量:5
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作者 刘焕龙 陈天鹏 +4 位作者 苏素文 李军霞 李瑾菲 齐瓒 陈雪彦 《中国临床药理学杂志》 CAS CSCD 北大核心 2020年第2期142-145,共4页
目的探讨Apelin-13对脂多糖(LPS)诱导大鼠肺微血管内皮细胞(PMVECs)炎性因子表达的影响,并分析其与活性氧-核因子κB(ROS-NF-κB)信号通路的相关性。方法采用植块法培养大鼠PMVECs。在Apelin-13干预实验中,PMVECs随机分为对照组、模型... 目的探讨Apelin-13对脂多糖(LPS)诱导大鼠肺微血管内皮细胞(PMVECs)炎性因子表达的影响,并分析其与活性氧-核因子κB(ROS-NF-κB)信号通路的相关性。方法采用植块法培养大鼠PMVECs。在Apelin-13干预实验中,PMVECs随机分为对照组、模型组和低、中、高剂量实验组。对照组用正常含血清的培养液处理细胞,模型组和实验组均采用10μg·mL-1 LPS处理细胞,实验组分别给予1×10^&-9,1×10^-8和1×10^-7 mol·L^-1 Apelin预处理细胞,2 h后加入终浓度为10μg·mL-1的LPS刺激细胞。用逆转录-聚合酶链反应(RT-PCR)法检测白细胞介素-6(IL-6)、单核细胞趋化蛋白-1(MCP-1)mRNA表达以及蛋白分泌的变化;2′,7′-二氯荧光黄双乙酸盐(DCFH-DA)染色检测PMVECs中ROS的产生;以Western blot法检测NF-κB P65的蛋白表达水平。结果Apelin-13干预实验中,对照组、模型组和低、中、高剂量实验组的IL-6 mRNA相对表达量分别为0.46±0.06,1.06±0.08,0.90±0.08,0.75±0.11和0.62±0.04;MCP-1 mRNA相对表达量分别为0.31±0.06,1.12±0.24,0.91±0.06,0.66±0.09和0.63±0.10;ROS相对生成量分别为(100.00±10.21)%,(442.39±56.41)%,(315.35±46.75)%,(229.51±24.67)%和(216.18±40.59)%;NF-κB p65蛋白的相对表达量分别为(100.00±18.18)%,(376.87±49.39)%,(233.36±52.42)%,(202.63±27.01)%和(183.88±53.09)%。对照组和实验组分别与模型组比较,差异均有统计学意义(P<0.05)。结论Apelin-13通过干预ROS-NF-κB信号通路抑制了LPS诱导的PMVECs中炎性因子的表达。 展开更多
关键词 APELIN-13 脂多糖 肺微血管内皮细胞 炎性因子
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A Mitochondria-Specific Orange/Near-Infrared-Emissive Fluorescent Probe for Dual-Imaging of Viscosity and H_(2)0_(2) in Inflammation and Tumor Models 被引量:2
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作者 Li Fan qi zan +5 位作者 Xiaodong Wang Shuohang Wang Yuewei Zhang Wenjuan Dong Shaomin Shuang Chuan Dong 《Chinese Journal of Chemistry》 SCIE CAS CSCD 2021年第5期1303-1309,共7页
Elucidating the intrinsic relationship between viscosity/H_(2)0_(2) and mitochondria-associated diseases remains a great challenge owing to the lack of research on multiple diseases models,such as inflammation and mal... Elucidating the intrinsic relationship between viscosity/H_(2)0_(2) and mitochondria-associated diseases remains a great challenge owing to the lack of research on multiple diseases models,such as inflammation and malignant tumor models.In this work,we have developed a mitochondria-specific orange/near-infrared-emissive fluorescent probe TTPB,for dual-imaging of viscosity and H_(2)0_(2) levels in two different channels.The probe exhibited a remarkable response to viscosity with NIR emission round 666 nm,and was highly sensitive to H_(2)0_(2) in orange channel with emission peak at 586 nm.Moreover,TTPB has good mitochondria-specific ability and permits individual detecting of viscosity in NIR channels and H_(2)0_(2) levels in orange channel in living cells.More notably,TTPB was successfully applied to simultaneously image the viscosity and H_(2)0_(2) levels in inflammation and cancer models. 展开更多
关键词 VISCOSITY H_(2)0_(2) Mitochondria-specific Fluorescent probes Fluorescence spectroscopy
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