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동의어 포함
Title Page
ABSTRACT
Contents
Chapter 1. Introduction 11
Chapter 2. Materials and Method 18
2.1. Cell culture 18
2.2. Exosome isolation 21
2.3. Quantitative reverse transcriptase-PCR (qRT-PCR) 21
2.4. miRNA mimics and anti-miRNA oligonucleotides 23
2.5. Immunoblotting 23
2.6. Cell proliferation assay 24
2.7. In vitro scratch wound assay 24
2.8. Nitric oxide assay 24
2.9. Exosome labeling and uptake into endothelial cells 25
2.10. NGS-based small RNA sequencing 26
2.11. Statistical Analysis 26
Chapter 3. Results 27
3.1. Part I. Vascular smooth muscle cell-derived exosomal microRNAs regulate endothelial cell migration under PDGF stimulation 27
3.1.1. PASMC-Derived Exosomes Affect PAEC Migration under PDGF Stimulation 28
3.1.2. Exosomal miRNA Profile is Regulated by PDGF Signaling 34
3.1.3. PASMC-Derived Exosomes Affect Cellular Levels of miRNA in PAECs 42
3.1.4. Downregulation of miR-1246, miR-182, and miR-486 elicits a pro-migratory effect in vascular cells 45
3.1.5. Exosome-derived miR-1246, miR-182, and miR-486 counteract the effect of exosomes from PDGF-stimulated PASMCs on PAEC migration 55
Chapter 3. Results 58
3.2. Part II. PDGF-stimulated Vascular Smooth Muscle Cells Regulate Endothelial Cell Dysfunction through Exosomal miR-409 58
3.2.1. miR-409 was enriched in exosomes derived from PDGF-stimulated PASMCs 59
3.2.2. PASMC-derived exosomal miR-409 was delivered to PAECs 63
3.2.3. PASMC-derived exosomal miR-409 induces endothelial dysfunction 67
3.2.4. miR-409 transfected PAEC regulate PASMC proliferation in co-culture 79
3.2.5. miR-409 regulates the expression of its target mRNA, LRP8, in PAECs 82
Chapter 4. Discussion 86
Chapter 5. References 91
국문초록 102
Figure 1. PDGF-stimulated vascular phenotype changes 15
Figure 2. Biogenesis of Exosomes 16
Figure 3. miRNA biogenesis 17
Figure 4. Human primary pulmonary artery smooth muscle cells (PASMCs) 19
Figure 5. Human primary pulmonary artery endothelial cells (PAECs) 20
Figure 6. Exosomes secreted by platelet-derived growth factor (PDGF)-stimulated pulmonary... 30
Figure 7. Expression of miRNAs in exosomes secreted by PASMCs is affected by PDGF... 38
Figure 8. Levels of miR-1246, miR-182, and miR-486 in PAECs are affected by treatment with... 43
Figure 9. Downregulation of miR-1246, miR-182, and miR-486 promotes PAEC migration.... 47
Figure 10. Downregulation of miR-1246, miR-182, and miR-486 promotes PASMC migration.... 51
Figure 11. miR-1246, miR-182, or miR-486-enriched exosomes inhibit PAEC migration induced... 56
Figure 12. miR-409 is induced in PDGF-stimulated PASMC exosomes.... 60
Figure 13. PAECs receive miR-409 via the PASMC-derived exosome.... 64
Figure 14. PASMC exosomes regulate the EC phenotype via exosomal miR-409.... 69
Figure 15. PASMCs proliferation is regulated by co-cultured with PAECs transfected with miR-... 80
Figure 16. miR-409 reduces LRP8 mRNA levels in PAECs 83
Figure 17. Crosstalk between PASMCs and PAECs via exosomal miR-409 90
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