Roles of PAD4 and NETosis in Experimental Atherosclerosis and Arterial Injury Implications for Superficial Erosion

被引:255
作者
Franck, Gregory [1 ,3 ]
Mawson, Thomas L. [1 ]
Folco, Eduardo J. [1 ]
Molinaro, Roberto [1 ]
Ruvkun, Victoria [1 ]
Engelbertsen, Daniel [2 ]
Liu, Xin [1 ]
Tesmenitsky, Yevgenia [1 ]
Shvartz, Eugenia [1 ]
Sukhova, Galina K. [1 ]
Michel, Jean-Baptiste [3 ]
Nicoletti, Antonino [3 ]
Lichtman, Andrew [2 ]
Wagner, Denisa [4 ]
Croce, Kevin J. [1 ]
Libby, Peter [1 ]
机构
[1] Harvard Med Sch, Brigham & Womens Hosp, Dept Cardiovasc Med, 77 Ave Louis Pasteur, Boston, MA 02115 USA
[2] Harvard Med Sch, Dept Pathol, Boston, MA 02115 USA
[3] INSERM U1148, Lab Vasc Translat Sci, Paris, France
[4] Boston Childrens Hosp, Div Hematol Oncol, Boston, MA USA
关键词
acute coronary syndrome; atherosclerosis; endothelial cells; granulocytes; thrombosis; NEUTROPHIL EXTRACELLULAR TRAPS; MECHANISMS; EXPRESSION; DAMAGE; CELLS; TLR2;
D O I
10.1161/CIRCRESAHA.117.312494
中图分类号
R5 [内科学];
学科分类号
1002 ; 100201 ;
摘要
Rationale: Neutrophils likely contribute to the thrombotic complications of human atheromata. In particular, neutrophil extracellular traps (NETs) could exacerbate local inflammation and amplify and propagate arterial intimal injury and thrombosis. PAD4 (peptidyl arginine deiminase 4) participates in NET formation, but an understanding of this enzyme's role in atherothrombosis remains scant. Objective: This study tested the hypothesis that PAD4 and NETs influence experimental atherogenesis and in processes implicated in superficial erosion, a form of plaque complication we previously associated with NETs. Methods and Results: Bone marrow chimeric Ldlr deficient mice reconstituted with either wild-type or PAD4-deficient cells underwent studies that assessed atheroma formation or procedures designed to probe mechanisms related to superficial erosion. PAD4 deficiency neither retarded fatty streak formation nor reduced plaque size or inflammation in bone marrow chimeric mice that consumed an atherogenic diet. In contrast, either a PAD4 deficiency in bone marrow-derived cells or administration of DNaseI to disrupt NETs decreased the extent of arterial intimal injury in mice with arterial lesions tailored to recapitulate characteristics of human atheroma complicated by erosion. Conclusions: These results indicate that PAD4 from bone marrow-derived cells and NETs do not influence chronic experimental atherogenesis, but participate causally in acute thrombotic complications of intimal lesions that recapitulate features of superficial erosion.
引用
收藏
页码:33 / 42
页数:10
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