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dc.contributor.advisor이용현-
dc.contributor.author이선아-
dc.creator이선아-
dc.date.accessioned2023-02-24T16:30:46Z-
dc.date.available2023-02-24T16:30:46Z-
dc.date.issued2023-
dc.identifier.otherOAK-000000202227-
dc.identifier.urihttps://dcollection.ewha.ac.kr/common/orgView/000000202227en_US
dc.identifier.urihttps://dspace.ewha.ac.kr/handle/2015.oak/264235-
dc.description.abstractThe tumor microenvironment (TME) plays an important role in tumorigenesis and cancer cell metastasis. Therefore, drug delivery systems (DDSs) that can target tumors and release drugs in response to TME-related stimuli should elicit potent antitumor efficacy. Here, as an example of TME-targeting DDS, hyaluronic acid-bilirubin nanoparticles, a drug delivery system that responds to cancer-targeting reactive oxygen species (ROS), are reported. Tumor targeting could be achieved through hyaluronic acid (HA) shell which is capable of specific binding to the CD44-overexpressing tumors. Bilirubin (BR) core is used as a ROS-responsive functional part due to the ROS-mediated change of hydrophobic bilirubin into water-soluble biliverdin and bilirubin oxidative products, leading to ROS-responsive drug release. An anti-cancer agent, SN-38-loaded HABN (SN-38@HABN) with a size of ~100 nm was prepared by a one-step film layer method. SN-38@HABN underwent ROS-responsive disruption which is associated with ROS-specific drug release. Furthermore, SN-38@HABN showed specific binding as well as anti-cancer activity against CD44-overexpressing HeLa cells with high levels of ROS in vitro, while exhibiting limited anti-cancer activity against HepG2 cells, a CD44-negative cancer cell line. In addition, intravenous injection of SN-38@HABNs into HeLa tumor-bearing mice results in enhanced tumor targeting ability and greater antitumor efficacy compared with free SN-38, HABRs only, and SN-38@HABNs without causing any appreciable body weight loss. Taken together, these findings suggest that SN-38@HABN may hold potential as a new TME-responsive DDS for targeted cancer therapy.;종양 미세 환경 (TME)은 종양 형성 및 암 세포 전이에서 중요한 역할을 합니다. 따라서 종양을 표적으로 삼고 TME 관련 자극에 반응하여 약물을 방출할 수 있는 약물 전달 시스템 (DDS)은 강력한 항 종양 효능을 이끌어내야 합니다. 이 논문에서는 TME를 표적으로 하는 DDS의 예로서 암을 표적으로 하는 활성산소종 (ROS)에 반응하는 약물 전달체인 히알루론산-빌리루빈 나노입자가 보고됩니다. 종양 표적화는 CD44를 과발현하는 종양에 특이적으로 결합할 수 있는 히알루론산 (HA) shell을 통해 가능하게 합니다. 빌리루빈 (BR) core는 소수성 빌리루빈이 수용성 빌리루빈 및 빌리루빈 산화 생성물로 ROS 매개 변화로 인해 ROS 반응 기능적 부분으로 사용되어 ROS 반응 약물 방출로 이어집니다. 항암제 SN-38이 로딩이 된 HABN은 ~100 nm 크기로, 필름 레이어 방법으로 제조됩니다. SN-38@HABN은 ROS 특이적 약물 방출과 관련된 ROS 반응성을 보입니다. 또한 SN-38@HABN은 in vitro에서 높은 수준의 ROS를 갖는 CD44 과발현 HeLa 세포주에 대해 특이적 결합 및 항암 활성을 보이며, CD44 음성 암 세포주인 HepG2 세포에 대해서는 제한된 항암 활성을 나타냅니다. 또한 in vivo test 결과를 바탕으로, HeLa 종양 보유 마우스에 SN-38@HABN을 정맥 주사하면 종양 표적화 능력이 향상되고, SN-38, HABR 및 SN-38@HABN과 비교하였을 때 체중 감소와 같은 부작용 없이 뛰어난 항종양 효능을 나타냅니다. 종합하면, 이러한 발견은 SN-38@HABN이 표적 암 치료를 위한 새로운 TME 반응성 DDS로서의 잠재력을 보유할 수 있음을 시사합니다.-
dc.description.tableofcontents1. Introduction 1 2. Materials and Methods 4 2.1. Synthesis of Hayluronic acid-bilirubin conjugates (HA-BR) 4 2.2. Synthesis of PEGylated bilirubin (PEG-BR) 5 2.3. Synthesis of HABN-Cy5.5 6 2.4. Preparation of SN-38-loaded hyaluronic acid bilirubin nanoparticles (SN-38@HABN) 6 2.5. ROS-mediated nanoparticles 7 2.6. Drug release from HABR induced by ROS exposure 7 2.7. Cell culture 8 2.8. Measurement of intracellular ROS 8 2.9. CCK-8 assay 9 2.10. in vitro Confocal Microscopy 9 2.11. Animals 9 2.12. in vivo IVIS imaging 10 2.13. in vivo tumor study 11 2.14. Statistical analysis 11 3. Results 13 3.1. Preparation of SN-38 loaded HABN (SN-38@HABN) 13 3.2. SN-38 shows selectively toward CD44-overexpressing cell lines 15 3.3. SN-38@HABN releases SN-38 in response to ROS 17 3.4. SN-38@HABN exerts enhanced anti-cancer activity in vitro 19 3.5. SN-38@HABN shows enhanced in vivo ability to target the tumor region in HeLa tumor-bearing mice 21 3.6. SN-38@HABN exerts enhanced anti-cancer activity in vivo 23 4. Conclusion 25 5. References 27 6. Supplementary Information 33 Abstract in Korean 38-
dc.formatapplication/pdf-
dc.format.extent2381775 bytes-
dc.languageeng-
dc.publisher이화여자대학교 대학원-
dc.subject.ddc600-
dc.titleROS-responsive Hyaluronic acid-bilirubin Nanoparticles Encapsulating SN-38 for Targeted Cancer Therapy-
dc.typeMaster's Thesis-
dc.creator.othernameLee, Seon Ah-
dc.format.pageⅵ, 38 p.-
dc.identifier.thesisdegreeMaster-
dc.identifier.major대학원 약학과-
dc.date.awarded2023. 2-
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일반대학원 > 약학과 > Theses_Master
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