CELL RES:巨噬细胞CD146促进泡沫细胞在动脉粥样硬化的形成与滞留

2017-01-17 MedSci MedSci原创

动脉壁中胆固醇巨噬细胞(泡沫细胞)的持续存在促进动脉粥样硬化的发展。然而,调节巨噬细胞泡沫细胞的形成并阻止它们从炎症斑块中移出的机制仍然是难以捉摸的。近期,一项发表在CELL RES杂志上的研究报告了粘附受体CD146控制巨噬泡沫细胞的形成和它们在斑块内动脉粥样硬化加重期间的滞留。CD146在人和小鼠粥样斑中的巨噬细胞上表达,并且可以被氧化的低密度脂蛋白(oxLDL)上调。CD146通过在脂质摄取

动脉壁中胆固醇巨噬细胞(泡沫细胞)的持续存在促进动脉粥样硬化的发展。然而,调节巨噬细胞泡沫细胞的形成并阻止它们从炎症斑块中移出的机制仍然是难以捉摸的。

近期,一项发表在CELL RES杂志上的研究报告了粘附受体CD146控制巨噬泡沫细胞的形成和它们在斑块内动脉粥样硬化加重期间的滞留。

CD146在人和小鼠粥样斑中的巨噬细胞上表达,并且可以被氧化的低密度脂蛋白(oxLDL)上调。CD146通过在脂质摄取期间驱动清道夫受体CD36的内化来触发巨噬细胞活化。为了响应oxLDL,巨噬细胞显示出向趋化因子CCL19和CCL21迁移能力的降低;但是这种趋化能力可以通过阻止CD146来恢复。巨噬细胞CD146的基因缺失或用抗体刺激CD146可以减少高脂肪饮食喂养的ApoE-/-小鼠中复杂斑块的形成,这一过程是通过使脂质负载的巨噬细胞离开斑块而导致的。

此项研究结果确定了CD146作为新型信号使得巨噬细胞滞留在动脉壁内,其将是治疗动脉粥样硬化的一项有前途的治疗靶点。

原始出处:
Luo Y, Duan H, Qian Y, Feng L, Wu Z, Wang F, Feng J, Yang D, Qin Z, Yan X. Macrophagic CD146 promotes foam cell formation and retention during atherosclerosis. Cell Res. 2017 Jan 13. doi: 10.1038/cr.2017.8.

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    2017-07-09 一叶知秋
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    2017-09-26 liuyong2980
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    2017-04-07 维他命
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    2017-01-18 ylzr123

    调节巨噬细胞泡沫细胞的形成并阻止它们从炎症斑块中移出的机制仍然是难以捉摸的。

    0

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Nature:中国科学家揭示动脉粥样硬化形成机制

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图片来源:www.sciencedaily.com 近日,来自布莱根妇女医院的研究人员通过研究发现了两个治疗动脉疾病(比如动脉粥样硬化)的潜在药物靶点,通过利用蛋白质组学对大量分子进行筛选,研究者鉴别出了两种PARP家族蛋白:PARP9和PARP14,这两种蛋白或许能够作为巨噬细胞激活的调节子,而巨噬细胞的激活同动脉疾病的发生直接相关,相关研究刊登于国际杂志Nature Communicat

两岸三地学者共同在《Nature》发文,称发现动脉粥样硬化形成新机制

近日,天津医科大学、香港中文大学生物医学学院和台湾细胞及系统医学研究所合作完成的一项研究发现一种名为YAP/TAZ的血管内皮细胞转录调控因子与动脉粥样硬化形成及血管炎症有密切关系。 这一结果发表在《Nature》上。血管内皮细胞是形成血管内壁表面的细胞层,而YAP/TAZ是这种细胞的转录调控因子,YAP/TAZ本身被视为“癌基因”,会促进癌症的发生及发展。而本研究发现,抑制YAP/TAZ活性还有助

Circ Res:免疫球蛋白M缺陷居然会导致动脉粥样硬化

血液感染后免疫系统最先产生的抗体是免疫球蛋白M(IgM),它是免疫系统的先锋部队,可以在其他细胞对抗感染之前发挥作用。但是一些人的这些抗体有缺陷甚至完全缺失,因此发展成为先天免疫缺陷。最近,维也纳医科大学医学化学诊断实验室与奥地利科学院分子医学研究中心的研究人员在一项最新研究中发现IgM缺陷还会导致动脉粥样硬化发病风险增加,最终可能引发严重的心血管疾病。 在人体免疫系统中,IgM不仅

氯吡格雷你真的会用吗?

导 语:服用氯吡格雷的快看过来~氯吡格雷可以用于近期心肌梗死患者、近期缺血性卒中患者、确诊外周动脉性疾病及急性冠脉综合征的患者,以预防其动脉粥样硬化血栓形成事件,长期服用氯吡咯雷和阿司匹林进行抗凝治疗的患者有胃溃疡风险,常需用质子泵抑制剂等胃药。目前国内批准上市的质子泵抑制剂类产品包括:奥美拉唑、泮托拉唑、兰索拉唑、雷贝拉唑和艾司奥美拉唑。2009年美国食品药品监督管理局(FDA)发布信息,通报了

盘点:近期动脉粥样硬化相关研究进展

动脉粥样硬化(atherosclerosis,AS)是冠心病、脑梗死、外周血管病的主要原因,是动脉壁上沉积一层包括胆固醇结晶在内的粥样物质,使动脉弹性降低、管腔变窄,常导致心肌梗塞、中风等致命疾病发生。胆固醇结晶会引发免疫反应,导致动脉壁出现可致命的炎症。关于近期动脉粥样硬化相关研究重大成果,小M与您分享。【1】SCI TRANSL MED:预防动脉粥样硬化的新方法——补充棕榈油酸虽然脂肪类食