지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
이용수11
I.INTRODUCTION 1II.MATERIAL AND METHODS 21Ⅱ-1.Study on the extraction condition and yield 21Ⅱ-2.Isolation and identification of arctiin from Arctium lappa seed 21Ⅱ-3.Selection of single compound 23Ⅱ-4.Cell culture 23Ⅱ-5.Cytotoxicity assay 25Ⅱ-6.UVB protection assay 25Ⅱ-7.Collagen assay 26Ⅱ-8.MMP-1 assay (Western blotting) 26Ⅱ-9.Analysis of cell cycle by flow cytometry 27Ⅱ-10.Wound healing assay 27Ⅱ-11.Luciferase-based DNA repair assay 28Ⅱ-12.Total RNA purification 28Ⅱ-13. Microarray analysis of miRNA expression 29Ⅱ-14. Bioinformatics analysis of dysregulated miRNAs 30Ⅱ-15. Statistical analysis 30III. RESULTS AND DISCUSSION 31Ⅲ-1. Isolation and identification of single compound from Arctium lappa seed 31Ⅲ-2. Study on the single compound extraction condition 38Ⅲ-2-1.Extraction yield of arctiin by the change of extraction condition 38Ⅲ-2-2.Selection of one active compound from repeatability and solubility test 38Ⅲ-2-3.Linearity test of arctiin 40Ⅲ-2-4.Establishment of optimal extraction process for arctiin 40Ⅲ-3.Protective effects of arctiin on UVB-induced NHDF damages through miRNA expression changes 47Ⅲ-3-1.Arctiin promotes UVB protection in NDHF cells 47Ⅲ-3-2.Arctiin recovers UVB-induced collagen decrease in NHDF cells 50Ⅲ-3-3.Arctiin decreases UVB-induced MMP-1 synthesis in NHDF cells 52Ⅲ-3-4.Arctiin rescues UVB-induced apoptosis in NHDF cells 54Ⅲ-3-5.Arctiin rescues UVB-mediated migration defects in NHDF cells 56Ⅲ-3-6.Arctiin promotes UVB-mediated DNA damage repair in NHDF cells 58Ⅲ-3-7.UVB protection effect of arctiin is associated with changes in the expression of specific miRNAs in NHDF cells 60Ⅲ-3-8.Differentially regulated miRNAs may play a role in regulating key pathways involved in the UVB protection effect in NHDF cells 64Ⅲ-3-9.Discussion 71Ⅲ-4.Photoprotective effect of arctiin against UVB-induced damage in HaCaT keratinocytes through miRNA expression changes 77Ⅲ-4-1.Arctiin protects HaCaT keratinocytes against UVB damages 77Ⅲ-4-2.Arctiin pretreatment antagonizes UVB-mediated HaCaT keratinocytes death 80Ⅲ-4-3.Arctiin pretreatment rescues UVB-induced deficiencies in wound healing and DNA repair 82Ⅲ-4-4.UVB protective functions of arctiin are associated with changes in miRNA expression profiles in HaCaT keratinocytes 86Ⅲ-4-5.Discussion 98IV.CONCLUSION 103
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