Fat mass and obesity-associated protein attenuates lipid accumulation in macrophage foam cells and alleviates atherosclerosis in apolipoprotein E-deficient mice

2017 ◽  
Vol 35 (4) ◽  
pp. 810-821 ◽  
Author(s):  
Chunfen Mo ◽  
Ming Yang ◽  
Xiaojuan Han ◽  
Junhong Li ◽  
Guangping Gao ◽  
...  
2015 ◽  
Vol 2015 ◽  
pp. 1-13 ◽  
Author(s):  
Tzong-Shyuan Lee ◽  
Kuo-Yun Lu ◽  
Yuan-Bin Yu ◽  
Hsueh-Te Lee ◽  
Feng-Chuan Tsai

Erythropoietin (EPO), the key factor for erythropoiesis, also protects macrophage foam cells from lipid accumulation, yet the definitive mechanisms are not fully understood.βcommon receptor (βCR) plays a crucial role in the nonhematopoietic effects of EPO. In the current study, we investigated the role ofβCR in EPO-mediated protection in macrophages against oxidized low-density lipoprotein- (oxLDL-) induced deregulation of lipid metabolism and inflammation. Here, we show thatβCR expression was mainly in foamy macrophages of atherosclerotic aortas from apolipoprotein E-deficient mice. Results of confocal microscopy and immunoprecipitation analyses revealed thatβCR was colocalized and interacted with EPO receptor (EPOR) in macrophages. Inhibition ofβCR activation by neutralizing antibody or small interfering RNA (siRNA) abolished the EPO-conferred protection in oxLDL-induced lipid accumulation. Furthermore, EPO-promoted cholesterol efflux and upregulation of ATP-binding cassette (ABC) transporters ABCA1 and ABCG1 were prevented by pretreatment withβCR neutralizing antibody orβCR siRNA. Additionally, blockage ofβCR abrogated the EPO-conferred anti-inflammatory action on oxLDL-induced production of macrophage inflammatory protein-2. Collectively, our findings suggest thatβCR may play an important role in the beneficial effects of EPO against oxLDL-elicited dysfunction of macrophage foam cells.


2007 ◽  
Vol 42 (6) ◽  
pp. S223
Author(s):  
Yanxia Ning ◽  
Leyuan Xu ◽  
Yifeng Jiang ◽  
Chen Xu ◽  
Chao Lu ◽  
...  

2009 ◽  
Vol 202 (1) ◽  
pp. 152-161 ◽  
Author(s):  
Ling Tian ◽  
Nanlan Luo ◽  
Richard L. Klein ◽  
B. Hong Chung ◽  
W. Timothy Garvey ◽  
...  

2017 ◽  
Vol 31 (11) ◽  
pp. 4971-4984 ◽  
Author(s):  
Anja Maier ◽  
Hao Wu ◽  
Nada Cordasic ◽  
Peter Oefner ◽  
Barbara Dietel ◽  
...  

2019 ◽  
Vol 249 ◽  
pp. 482-490 ◽  
Author(s):  
Jiangyan Liu ◽  
Shuang Liang ◽  
Zhou Du ◽  
Jingyi Zhang ◽  
Baiyang Sun ◽  
...  

2020 ◽  
Vol 12 (7) ◽  
pp. 303-333
Author(s):  
Richard James Lightbody ◽  
Janice Marie Walsh Taylor ◽  
Yvonne Dempsie ◽  
Annette Graham

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