Overexpressed PKM2 promotes macrophage phagocytosis and atherosclerosis

被引:0
|
作者
Xiaochen Gai [1 ]
Fangming Liu [1 ]
Yuting Wu [1 ]
Baohui Zhang [2 ]
Bufu Tang [3 ]
Kezhuo Shang [1 ]
Lianmei Wang [1 ,4 ]
Haihong Zhang [1 ]
Yixin Chen [5 ]
Shuhui Yang [1 ]
Weiwei Deng [1 ]
Peng Li [6 ]
Jing Wang [7 ]
Hongbing Zhang [1 ]
机构
[1] State Key Laboratory of Medical Molecular Biology,Department of Physiology,Institute of Basic Medical Sciences and School of Basic Medicine,Chinese Academy of Medical Sciences and Peking Union Medical College
[2] Department of Physiology,School of Life Science,China Medical University
[3] Department of Radiology,Sir Run Run Shaw Hospital,Zhejiang University School of Medicine
[4] Institute of Chinese Materia Medica,China Academy of Chinese Medical Sciences
[5] Department of Cardiac Surgery,Fuwai Hospital,Stata Key Laboratory of Cardiovascular Disease,National Center for Cardiovascular Diseases of China,Chinese Academy of Medical Sciences and Peking Union Medical College
[6] School of Life Sciences,Westlake University
[7] State Key Laboratory of Medical Molecular Biology,Department of Pathophysiology,Institute of Basic Medical Sciences and School of Basic Medicine,Chinese Academy of Medical Sciences and Peking Union Medical College
基金
国家重点研发计划; 中国国家自然科学基金;
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暂无
中图分类号
R54 [心脏、血管(循环系)疾病];
学科分类号
摘要
Background:The expression of pyruvate kinase muscle 2(PKM2) is augmented in macrophages of patients with atherosclerotic coronary artery disease.The role of PKM2 in atherosclerosis is to be determined.Methods:Global and myeloid cell-specific PKM2 knock-in mice with ApoE-/-background(ApoE-/-,PKM2KI/KIand Lyz2-cre,ApoE-/-,and PKM2flox/flox) were produced to evaluate the clinical significance of PKM2 in atherosclerosis development.Wild-type and PKM2 knock-in macrophages were isolated to assess the function of PKM2 in macrophage phagocytosis.Atherosclerotic mice were treated with PKM2 inhibitor shikonin(SKN) to evaluate the therapeutic potential of PKM2 suppression in atherosclerosis.Results:Oxidized low-density lipoprotein(oxLDL) upregulated PKM2 in macrophages.PKM2 in return promoted the uptake of oxLDL by macrophages.Overexpressed PKM2accelerated atherosclerosis in mice.SKN blocked the progress of mouse atherosclerosis.Conclusions:PKM2 accelerates macrophage phagocytosis and atherosclerosis.Targeting PKM2 is a potential therapy for atherosclerosis.
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页码:92 / 102
页数:11
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