| Content Provider | Springer Nature : BioMed Central |
|---|---|
| Author | Zhang, Yali Fu, Yu Jia, Linying Zhang, Chenyang Cao, Wenbin Alam, Naqash Wang, Rong Wang, Weirong Bai, Liang Zhao, Sihai Liu, Enqi |
| Abstract | Background Cardiovascular diseases remain the leading cause of morbidity and mortality worldwide, most of which are caused by atherosclerosis. Discerning processes that participate in macrophage-to-foam cell formation are critical for understanding the basic mechanisms underlying atherosclerosis. To explore the molecular mechanisms of foam cell formation, differentially expressed proteins were identified. Methods Human peripheral blood mononuclear cells were stimulated with macrophage colony-stimulating factor, and obtained macrophages were transformed into foam cells by oxidized low-density lipoprotein. Tandem mass tag (TMT) labeling combined with mass spectrometry was performed to find associations between foam cell transformation and proteome profiles. Results Totally, 5146 quantifiable proteins were identified, among which 1515 and 182 differentially expressed proteins (DEPs) were found in macrophage/monocyte and foam cell/macrophage, respectively. Subcellular localization analysis revealed that downregulated DEPs of macrophages/monocytes were mostly located in the nucleus, whereas upregulated DEPs of foam cells/macrophages were mostly extracellular or located in the plasma membrane. Functional analysis of DEPs demonstrated that cholesterol metabolism-related proteins were upregulated in foam cells, whereas immune response-related proteins were downregulated in foam cells. The protein interaction network showed that the DEPs with the highest interaction scores between macrophages and foam cells were mainly concentrated in lysosomes and the endoplasmic reticulum. Conclusions Proteomics analysis suggested that cholesterol metabolism was upregulated, while the immune response was suppressed in foam cells. KEGG enrichment analysis and protein-protein interaction analysis indicated that DEPs located in the endoplasmic reticulum and lysosomes might be key drivers of foam cell formation. These data provide a basis for identifying the potential proteins associated with the molecular mechanism underlying macrophage transformation to foam cells. |
| Related Links | https://proteomesci.biomedcentral.com/counter/pdf/10.1186/s12953-021-00183-x.pdf |
| Ending Page | 13 |
| Page Count | 13 |
| Starting Page | 1 |
| File Format | HTM / HTML |
| ISSN | 14775956 |
| DOI | 10.1186/s12953-021-00183-x |
| Journal | Proteome Science |
| Issue Number | 1 |
| Volume Number | 20 |
| Language | English |
| Publisher | BioMed Central |
| Publisher Date | 2022-01-03 |
| Access Restriction | Open |
| Subject Keyword | Proteomics Atherosclerosis Macrophage Foam cell Proteome |
| Content Type | Text |
| Resource Type | Article |
| Subject | Biochemistry Molecular Biology |
| Journal Impact Factor | 2.1/2023 |
| 5-Year Journal Impact Factor | 2/2023 |
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