Abstract |
Background-Elevated circulating fatty-acid-binding protein 4 (FABP4) levels may be linked with cardiovascular events. This study aimed to investigate the mechanistic role of FABP4 in atherosclerosis. Methods-We recruited 22 patients with angiographically proven coronary artery disease (CAD) and 40 control subjects. Mononuclear cells (MNCs) and human coronary endothelial cells (HCAECs) were used for in vitro study. Results-Patients with CAD were predominantly male with an enhanced prevalence of hypertension, diabetes, and smoking history. FABP4 concentrations were up-regulated in culture supernatants of MNCs from CAD patients, which were positively correlated with the patients' age, waist-hip ratio, body mass index, serum creatinine, type 2 diabetes, and the presence of hypertension. The adhesiveness of HCAECs to monocytic cells can be activated by FABP4, which was reversed by an FABP4 antibody. FABP4 blockade attenuated the oxidized low-density lipoprotein ( oxLDL)-induced expression of ICAM-1, VCAM-1, and P-selectin. FABP4 impaired the tube formation and migration via the ERK/JNK/STAT-1 signaling pathway. FABP4 suppressed phosphorylation of eNOS and expression of SDF-1 protein, both of which can be reversed by treatment with VEGF. Blockade of FABP4 also improved the oxLDL-impaired cell function. Conclusion-We discovered a novel pathogenic role of FABP4 in MNC activation and endothelial dysfunction in atherosclerosis. FABP4 may be a therapeutic target for modulating atherosclerosis.
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Authors | Yen-Wen Wu, Ting-Ting Chang, Chia-Chi Chang, Jaw-Wen Chen |
Journal | International journal of molecular sciences
(Int J Mol Sci)
Vol. 21
Issue 23
(Dec 03 2020)
ISSN: 1422-0067 [Electronic] Switzerland |
PMID | 33287461
(Publication Type: Journal Article)
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Chemical References |
- CD18 Antigens
- Cell Adhesion Molecules
- FABP4 protein, human
- Fatty Acid-Binding Proteins
- Integrin alpha Chains
- Lipoproteins, LDL
- STAT1 Transcription Factor
- oxidized low density lipoprotein
- NOS3 protein, human
- Nitric Oxide Synthase Type III
- Extracellular Signal-Regulated MAP Kinases
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Topics |
- Aged
- Atherosclerosis
(etiology, metabolism, pathology)
- CD18 Antigens
(metabolism)
- Cell Adhesion
- Cell Adhesion Molecules
(genetics, metabolism)
- Disease Susceptibility
- Endothelial Cells
(metabolism)
- Extracellular Signal-Regulated MAP Kinases
(metabolism)
- Fatty Acid-Binding Proteins
(metabolism)
- Female
- Humans
- Integrin alpha Chains
(metabolism)
- Leukocytes, Mononuclear
(immunology, metabolism)
- Lipoproteins, LDL
(metabolism)
- Male
- Middle Aged
- Models, Biological
- Nitric Oxide Synthase Type III
(genetics, metabolism)
- STAT1 Transcription Factor
(metabolism)
- Signal Transduction
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