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DC Field | Value | Language |
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dc.contributor.advisor | 김 욱 | - |
dc.contributor.author | 이왕희 | - |
dc.date.issued | 2023-02 | - |
dc.identifier.other | 32596 | - |
dc.identifier.uri | https://aurora.ajou.ac.kr/handle/2018.oak/24574 | - |
dc.description | 학위논문(박사)--분자과학기술학과,2023. 2 | - |
dc.description.abstract | 여러 소수성 중심 부분을 친수성 히알루론산으로 둘러싸고 있는 자가 조립 히알루론산 나노입자(HANP)는 나노 운반체로서 광범위하게 연구되어 왔다. 그런데 흥미롭게도 최근 몇 그룹에서 어떤 약물도 함유하지 않은 빈 HANP가 제2형 당뇨병, 관절염 및 동맥경화증 치료를 위한 잠재적인 치료제라고 보고했다. 여기, 나는 비만과 건선을 포함한 다른 만성 염증성 질환에서 HANP의 효능을 보고한다. 첫번째로 자가조립 히알루론-담즙산 나노 입자 (HABA)가 지방세포생성과 지방산합성에 미치는 효과를 평가하여 비만 치료제로서의 가능성을 확인했다. HABA를 3T3L-1 지방 전구세포에 처리하면 지방세포생성 및 지질 축적이 농도 의존적으로 억제되고, 주요 지방세포생성 및 지방산합성 조절인자의 발현이 감소했다. 그러나, 이러한 HABA 매개 효과는 CD44에 대한 siRNA로 형질주입 된 3T3-L1 세포에서는 관찰되지 않았다. 이러한 결과와 일치하게, 식이 유도 비만 마우스의 HABA 치료는 체중과 부고환 지방량을 감소시켰고, 지방세포생성 및 지방산합성 조절인자의 유도를 억제한 반면, CD44가 없는 마우스에서는 이러한 효과가 약화되었다. 그 다음으로 나는 건선 치료를 위한 치료제로서 HABA의 가능성을 확인했다. HABA는 뚜렷한 독성 징후 158 없이 각질세포의 과증식과 대식세포의 M1 분화를 억제함으로써 건선 유사 피부에 대해 강력한 치료 효능을 발휘했다. 경피투여 된 HABA는 염증이 있는 피부에서 전 염증성 대식세포에 축적되어 대식세포의 M1 분극화를 억제하는 것으로 확인되었다. 그 결과, HABA는 IMQ로 유발된 건선 유사 마우스에서 기존 약물에 비해 현저한 효능을 보였다. 종합하면, 나는 HANP가 비만 관련 만성 염증성 질환 치료를 위한 나노의약으로서의 가능성을 가지고 있음을 보고한다. | - |
dc.description.tableofcontents | PART I - Self-assembled hyaluronic acid nanoparticle suppresses fat accumulation via CD44 in diet-induced obese mice 1 <br> I-1. INTRODUCTION 2 <br> I-2. RESULTS 5 <br> I-2.1 Synthesis and characterization of self-assembled HACN 5 <br> I-2.2 Self-assembled HACNs suppress adipogenesis and lipogenesis during the 3T3-L1 differentiation 10 <br> I-2.3 HACN mediated effects on adipogenesis and lipogenesis depend on CD44 15 <br> I-2.4 In vivo effects of HACN in WT and CD44 KO DIO mice 20 <br> I-2.5 Effects of CA and free HA on adipogenesis and weight change 26 <br> I-3. DISCUSSION 31 <br> <br>PART II - Hyaluronic Acid Nanoparticles as a Topical Agent for Treating Psoriasis 33 <br> II-1. INTRODUCTION 34 <br> II-2. RESULTS 37 <br> II-2.1. Synthesis and characterization of self-assembled HALN 37 <br> II-2.2. Therapeutic efficacy of HALN administered via the subcutaneous route in psoriasis-like skin dermatitis 47 <br> II-2.3. Accumulation of Transcutaneously Administered HALN in IMQ-Inflamed Dermis 63 <br> II-2.4. Efficacy of Transcutaneously Administered HALNs against Psoriasis-like Skin Dermatitis 80 <br> II-2.5. Macrophages as a Target in IMQ-Inflamed Skin 97 <br> II-2.6. Modulation of Macrophage Polarization 104 <br> II-3. DISCUSSION 117 <br> <br>III. MATERIALS and METHODS 120 <br> 2.1. Materials 120 <br> 2.2. Characterization of Compounds 120 <br> 2.3. CA Ester 120 <br> 2.4. EtCA 121 <br> 2.5. HA-CA 122 <br> 2.6. LCA Ester 122 <br> 2.7. EtLCA 123 <br> 2.8. HA-LCA 124 <br> 2.9. 10k-HA-LCA 124 <br> 2.10. Cy5.5-HA 125 <br> 2.11 Cy5.5-HA-LCA and Cy5.5-HA-CA 125 <br> 2.12. Characterization of HANPs 126 <br> 2.13. The 3T3-L1 cell culture and differentiation 126 <br> 2.14. The 3T3-L1 cell viability assay 127 <br> 2.15. Transfection of small tnerfering RNA 128 <br> 2.16. Mice 128 <br> 2.17. Histology and Immunofluorescence 128 <br> 2.18. Quantitative real-time PCR analysis 130 <br> 2.19. High-fat diet induced obesity mice 132 <br> 2. 20. Determination of adipocyte size 132 <br> 2.21. Oil-red-O staining 133 <br> 2. 22. Colorimetric Assessment of Terminal N-Acetyl-d-Glucosamine (Hyaluronan Breakdown Products) 133 <br> 2. 23. Psoriasis-like Mouse Models 134 <br> 2.24. Cell Isolation from the Shaved Dorsal Skin 136 <br> 2.25. Hematological Toxicity 136 <br> 2.26. In Vivo Toxicity Test 137 <br> 2.27. In Vivo Skin Penetration Studies 137 <br> 2.28. Multi-Photon Microscopy 128 <br> 2.29. Ex Vivo Biodistribution 128 <br> 2.30. Cell Culture 139 <br> 2.31. In Vivo Depletion of Macrophages 140 <br> 2.32. In Vitro Competitive Inhibition Assay 140 <br> 2.33. In Vitro Cellular Uptake Assay 141 <br> 2.34. RNA-seq and Bioinformatic Analysis 141 <br> 2.35. Immunoblot Analysis 142 <br> 2.36. In Vitro Macrophage Polarization 143 <br> 2.37. Statistical analysis 144 <br>IV. CONCLUSION 146 <br>V. REFERENCE 147 <br>VI. ABSTRACT IN KOREAN (국문초록) 157 | - |
dc.language.iso | eng | - |
dc.publisher | The Graduate School, Ajou University | - |
dc.rights | 아주대학교 논문은 저작권에 의해 보호받습니다. | - |
dc.title | Hyaluronan-bile acid nanoparticles: Implications as a nanomedicine for the treatment of obesity-related chronic inflammatory diseases | - |
dc.type | Thesis | - |
dc.contributor.affiliation | 아주대학교 대학원 | - |
dc.contributor.alternativeName | Wang Hee Lee | - |
dc.contributor.department | 일반대학원 분자과학기술학과 | - |
dc.date.awarded | 2023-02 | - |
dc.description.degree | Doctor | - |
dc.identifier.url | https://dcoll.ajou.ac.kr/dcollection/common/orgView/000000032596 | - |
dc.subject.keyword | Chronic inflammatory diseases | - |
dc.subject.keyword | Obesity | - |
dc.subject.keyword | Psoriasis | - |
dc.subject.keyword | Self-assembled Hyaluronan-Bile Acid nanoparticles (HABAs) | - |
dc.subject.keyword | Self-assembled hyaluronic acid nanoparticles (HANPs) | - |
dc.description.alternativeAbstract | Self-assembled hyaluronic acid nanoparticles (HANPs), consisting of the outermost hydrophilic HA layer surrounding multiple hydrophobic inner moieties, have been investigated broadly as a nanocarrier. Interestingly, several groups have recently reported that an empty HANP not bearing any drug is a potential therapeutic agent for the treatment of type 2 diabetes, arthritis, and atherosclerosis. Here, I report the efficacy of HANP in another chronic inflammatory diseases including obesity and psoriasis. First, I confirmed the potential of self-assembled hyaluronan-bile acid nanoparticles (HABAs) as therapeutics to treat obesity by assessing their in vitro and in vivo effects on adipogenesis and lipogenesis. Treatment of 3T3-L1 preadipocytes with HABA resulted in a dose-dependent suppression of adipogenesis and lipid accumulation, and decreased the expression of key adipogenic and lipogenic regulators. However, these HABA mediated effects were not observed in 3T3-L1 cells transfected with siRNAs against CD44. Consistent with in-vitro results, HABA treatment of diet-induced obese mice reduced the body weight and epididymal fat mass, and suppressed the induction of adipogenic and lipogenic regulators, while these effects were attenuated in the CD44-null mice. Subsequently, I investigated the potential of HABA as therapeutics for treating psoriasis. HABA exerted potent therapeutic efficacy against psoriasis-like skin by suppressing hyperproliferation of keratinocyte and M1 polarization of macrophage without overt toxicity signs. Transcutaneously administered HABAs were found to be accumulated and associated with pro-inflammatory M1 macrophages in the inflamed skin, and suppressed the M1 polarization of macrophage. As a result, HABA, compared with conventional drugs, revealed remarkable efficacy on IMQ-induced psoriasis-like mice. Taken together, I report that HANP have potential as a nanomedicine for treating obesity-related chronic inflammatory diseases. | - |
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