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Orally delivered DEVD peptide prodrug for metastatic pancreatic cancer in combination with Olaparib : 전이성 췌장암에 대한 올라파립과 경구 DEVD 펩타이드 전구약물 병용요법

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dc.contributor.advisor변영로-
dc.contributor.author안상민-
dc.date.accessioned2021-11-30T04:35:34Z-
dc.date.available2021-11-30T04:35:34Z-
dc.date.issued2021-02-
dc.identifier.other000000163700-
dc.identifier.urihttps://hdl.handle.net/10371/175817-
dc.identifier.urihttps://dcollection.snu.ac.kr/common/orgView/000000163700ko_KR
dc.description학위논문 (석사) -- 서울대학교 대학원 : 융합과학기술대학원 분자의학 및 바이오제약학과, 2021. 2. 변영로.-
dc.description.abstractDrug resistance is a major barrier in the treatment of anticancer drugs. The underlying cause of this drug resistance is tumor heterogeneity. In particular, intratumoral heterogeneity has been an obstacle to continuous anticancer treatment, showing resistance subgroup selectivity as drug treatment is repeated.
In order to avoid drug resistance due to tumor heterogeneity, this paper presents a DEVD peptide drug conjugate. DEVD prodrugs use an induced phenotype targeted therapy, which targets apoptosis and uses the fact that caspase-3 released in the apoptosis process specifically recognizes and cleaves DEVD and causes activation of prodrug. In order to apply this strategy to metastatic pancreatic cancer, we devised a combination of the targeted treatment, Olaparib.
In addition, a DEVD prodrug was orally administered to treat metastatic cancer based on oral metronomic maintenance therapy. The OPD3 complex was synthesized using DCK by taking advantage of the fact that the complex of bile acid-derived substances promotes oral absorption. Through this study, the pharmacokinetic parameters and absorption mechanism of OPD3 were identified, and the tumor suppression ability was evaluated in a pancreatic cancer mouse xenograft model by combination therapy with olaparib. Because olaparib can be used specifically in the BRCA gene mutation patient group, the efficacy over BRCA mutated metastatic pancreatic cancer was evaluated. In addition, an attempt was made to establish a liver metastasis model, the most frequent metastatic organ of pancreatic cancer. Ultimately, we suggested the possibility of combination therapy of OPD3 and olaparib for BRCA gene mutant liver metastatic pancreatic cancer, which avoids drug resistance and has low systemic toxicity.
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dc.description.abstract약물 저항성은 항암 약물의 치료에 있어서 큰 장벽이다. 이러한 약물 저항성의 기저 원인은 종양 이질성에 있다. 특히, 종양내 이질성은 약물 처리가 반복됨에 따라 저항성 소집단 선택성을 보여 지속적 항암 치료에 걸림돌이 되어왔다.
종양 이질성에 의한 약물 저항성을 회피하기 위해 본 논문에서는 DEVD 펩타이드 약물 접합체를 제시한다. DEVD 전구약물은 유도 형질 표적 치료 전략을 사용하는데, 이는 세포자멸을 표적으로 하여 세포자멸 과정에서 방출된 Caspase-3가 DEVD를 특이적으로 인지하고 절단한다는 점을 이용하여 세포자멸에 의해 전구약물의 활성화를 일으킨다. 이러한 전략을 전이성 췌장암에 적용하기 위해 표적치료제 올라파립과의 병용을 고안하였다.
또한, 경구 메트로노믹 유지 요법에 근거하여 전이암을 치료하기 위해 DEVD 전구약물을 경구화하였다. 담즙산 유래 물질의 복합체가 경구 흡수를 촉진한다는 점을 이용하여 DCK를 이용하여 OPD3 복합체를 합성하였다. 본 연구를 통해 OPD3 의 약물 동태학적 파라미터와 흡수기전을 규명하였고, 올라파립과 병용요법으로써 췌장암 마우스 이종 이식 모델에서 종양 억제능을 평가하였다. 올라파립은 BRCA 유전자 돌연변이 환자군에서 특이적으로 사용할 수 있기 때문에 BRCA 돌연변이 전이성 췌장암에 대한 약효를 평가하였다. 추가로 전이성 췌장암의 가장 높은 표적 장기인 간 전이 모델의 확립을 시도하였다. 궁극적으로 약물 저항성을 회피하고 전신독성이 적은 BRCA 유전자 돌연변이성 간 전이성 췌장암에 대한 OPD3와 올라파립의 병용 요법의 가능성을 시사하였다.
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dc.description.tableofcontentsAbstract i

Table of Contents iii

List of Tables vi

List of Figures vii

1. Introduction 1

1.1 Conventional Cancer therapy 1

1.2 Limitations of conventional cancer therapy 2

1.2.1 Systemic toxicity 2

1.2.2 Drug resistance 3

1.3 Tumor heterogeneity 4

1.4 Peptide prodrug platform DEVD 6

1.4.1 Previous IPTT with radiation 9

1.4.2 Targeted therapy triggered prodrug for metastatic tumor 10

1.5 Metastatic pancreatic cancer 11

1.6 Olaparib at pancreatic cancer 13

1.7 Oral metronomic maintenance therapy for metastatic patients 14

1.8 Oral drug delivery using bile acid derivatives 15

1.9 OPD3 system 16

2. Materialsand Methods 18

2.1 Materials 18

2.2 Cell lines 18

2.3 Synthesis of KGDEVD-Docetaxel and DCK 19

2.4 Preparation and formulation of DEVD-S-Docetaxel/DCK complex (OPD3) 22

2.5 Characterization of comlex 22

2.6 Cytotoxicity assay 23

2.7 Caspase activity assay 23

2.8 Caspase-3 mediated Docetaxel release 24

2.9 Determination of apparent permeability in Caco-2 cells 24

2.10 Absorption mechanism study in Caco-2 cells 25

2.11 Pharmacokinetic study 26

2.12 Tumor growth suppression study 27

2.13 Liver metastasis model establishment 28

2.14 Statistical analysis 29

3. Results and Discussion 30

3.1 Synthesis of KGDEVD-Docetaxel and DCK 30

3.2 Preparation and formulation of DEVD-S-Docetaxel/DCK complex 31

3.3 Characterization of complex 32

3.4 Cytotoxicity assay 33

3.5 Caspase activity assay 35

3.6 Caspase-3 mediated Docetaxel release 36

3.7 Determination of apparent permeability in Caco-2 cells 37

3.8 Absorption mechanism study in Caco-2 cells 38

3.9 Pharmacokinetic study 41

3.10 Tumor growth suppression study 43

3.11 Liver metastasis model establishment 52

4. Conclusion 55


Bibliography 57

Abstract in Korean 59
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dc.format.extentviii, 59-
dc.language.isoeng-
dc.publisher서울대학교 대학원-
dc.subjectTumor heterogeneity-
dc.subjectDEVD-
dc.subjectMetastatic pancreatic cancer-
dc.subjectMetronomic maintenance chemotherapy-
dc.subjectBile acid derivatives-
dc.subjectOlaparib-
dc.subject종양 이질성-
dc.subject전이성 췌장암-
dc.subject메트로노믹 유지요법-
dc.subject담즙 산 유래 물질-
dc.subject올라파립-
dc.subject.ddc610.28-
dc.titleOrally delivered DEVD peptide prodrug for metastatic pancreatic cancer in combination with Olaparib-
dc.title.alternative전이성 췌장암에 대한 올라파립과 경구 DEVD 펩타이드 전구약물 병용요법-
dc.typeThesis-
dc.typeDissertation-
dc.contributor.AlternativeAuthorSangmin Ahn-
dc.contributor.department융합과학기술대학원 분자의학 및 바이오제약학과-
dc.description.degreeMaster-
dc.date.awarded2021-02-
dc.identifier.uciI804:11032-000000163700-
dc.identifier.holdings000000000044▲000000000050▲000000163700▲-
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