Midkine Prevents Calcification of Aortic Valve Interstitial Cells via Intercellular Crosstalk.

Midkine Prevents Calcification of Aortic Valve Interstitial Cells via Intercellular Crosstalk.

Zhou Q, Cao H, Hang X, Liang H, Zhu M, Fan Y, Shi J, Dong N, He X. Midkine Prevents Calcification of Aortic Valve Interstitial Cells via Intercellular Crosstalk. Front Cell Dev Biol. 2021;9:794058.

"single-cell RNA seq" "生信分析&组学研究"

重新分析单细胞数据获得了主要细胞类型的分群情况

图片[1]-Midkine Prevents Calcification of Aortic Valve Interstitial Cells via Intercellular Crosstalk.-香草杏仁

免疫细胞的聚类

图片[2]-Midkine Prevents Calcification of Aortic Valve Interstitial Cells via Intercellular Crosstalk.-香草杏仁

免疫细胞亚群中找到三群细胞。树突状细胞在我们的测序中没有检测到。

文中提到T细胞也能够重塑ECM。这一结果与阜外的瓣膜测序中提到的一群"remodeling T cell"具有相似之处,该研究中也提到了 "remodeling macrophage"

VEC中存在Endo-MT的亚群

图片[3]-Midkine Prevents Calcification of Aortic Valve Interstitial Cells via Intercellular Crosstalk.-香草杏仁

高度异质性的VIC

图片[4]-Midkine Prevents Calcification of Aortic Valve Interstitial Cells via Intercellular Crosstalk.-香草杏仁

图片[5]-Midkine Prevents Calcification of Aortic Valve Interstitial Cells via Intercellular Crosstalk.-香草杏仁

图片[6]-Midkine Prevents Calcification of Aortic Valve Interstitial Cells via Intercellular Crosstalk.-香草杏仁

他们的分群中没有看到周细胞。可能是因为钙化程度较低,无明显新生血管,周细胞数量极少。也可能mVICs就是周细胞,但是被忽视了。

细胞通讯分析

图片[7]-Midkine Prevents Calcification of Aortic Valve Interstitial Cells via Intercellular Crosstalk.-香草杏仁

图片[8]-Midkine Prevents Calcification of Aortic Valve Interstitial Cells via Intercellular Crosstalk.-香草杏仁

MDK信号参与VIC的激活和钙化调控

图片[9]-Midkine Prevents Calcification of Aortic Valve Interstitial Cells via Intercellular Crosstalk.-香草杏仁

从众多信号中关注到一个由mVICs发出的MDK信号,主要作用于aVIC和cVIC。所以推测这个信号可能在促进VIC 激活和钙化方面具有重要作用。

图片[10]-Midkine Prevents Calcification of Aortic Valve Interstitial Cells via Intercellular Crosstalk.-香草杏仁

通过体外培养VIC,OM诱导、添加MDK实验发现MDK抑制钙化。

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