JACC:巨噬细胞在心梗后有转化为成纤维细胞的能力

2019-12-25 不详 MedSci原创

巨噬细胞和成纤维细胞是心梗后愈合的两个主要细胞类型,参与心肌重塑和纤维化过程。本研究的目的旨在评估巨噬细胞表达纤维化基因的潜能和在心梗后心肌纤维化中的直接作用。本研究采用的小鼠模型是LysM(Cre/+);ROSA26(EYFP/+),其中黄色荧光蛋白(YFP)的表达局限在髓系以鉴定巨噬细胞来源的成纤维细胞,结果发现心梗后YFP阳性心脏细胞明显表达纤维化的标志物I型胶原、脯氨酰-4-羟化酶、成纤维

巨噬细胞和成纤维细胞是心梗后愈合的两个主要细胞类型,参与心肌重塑和纤维化过程。本研究的目的旨在评估巨噬细胞表达纤维化基因的潜能和在心梗后心肌纤维化中的直接作用。

本研究采用的小鼠模型是LysM(Cre/+);ROSA26(EYFP/+),其中黄色荧光蛋白(YFP)的表达局限在髓系以鉴定巨噬细胞来源的成纤维细胞,结果发现心梗后YFP阳性心脏细胞明显表达纤维化的标志物I型胶原、脯氨酰-4-羟化酶、成纤维细胞特异蛋白-1和成纤维细胞活化蛋白。用氯膦酸盐脂质体清除巨噬细胞后,可以观察到心肌梗死后成纤维细胞的存在。另外,心肌梗死后,巨噬细胞的减少显着减少了心脏Mac3+Col1A1+细胞的数量。

研究结果显示,巨噬细胞具有转化和采用成纤维细胞样表型的能力,这种巨噬细胞-成纤维细胞转化的治疗操作可能有利于调节心肌梗死和其他心血管病理过程后的纤维化反应。

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    2020-02-09 hbwxf
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    2020-11-15 lfyang
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    2019-12-27 医者仁心
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    2019-12-25 njwbhuang

    很好的文章,谢谢分享!

    0

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