19 research outputs found

    (A) study on international cooperation to control drug trafficking in the Asia-Pacific

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    ν•™μœ„λ…Όλ¬Έ (석사)-- μ„œμšΈλŒ€ν•™κ΅ λŒ€ν•™μ› : κ΅­μ œν•™κ³Ό(κ΅­μ œν˜‘λ ₯전곡), 2011.8. λ°±μ§„ν˜„.Maste

    HIF-1Ξ± 의쑴적 μ•” 전이 및 μ„±μž₯ 촉진 μΈμžλ‘œμ„œ 지방산 역할에 κ΄€ν•œ 연ꡬ

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    ν•™μœ„λ…Όλ¬Έ(박사) -- μ„œμšΈλŒ€ν•™κ΅λŒ€ν•™μ› : μ˜κ³ΌλŒ€ν•™ μ˜κ³Όν•™κ³Ό, 2021.8. μ „μ–‘μˆ™.Although obesity is a newly considered risk factor for cancer, the mechanisms by which adipocyte-derived metabolites accelerate cancer malignancy have yet to be elucidated. To identify the mechanism of fatty acids (FA) in promoting the proliferation and metastasis of cancer, I focused on the Hypoxia-inducible factor-1 alpha (HIF-1Ξ±) in various types of cancer. In hepatocellular carcinoma (HCC) cells, the treatment of FA enhances HIF-1Ξ± activity, and this triggers cell growth via fatty acid binding protein 5 (FABP5). Mechanistically, FABP5 upregulates HIF-1Ξ± activity by enhancing HIF-1Ξ± de novo synthesis while disrupting FIH/HIF-1Ξ± interaction at the same time. It is found that the FA/FABP5/HIF-1Ξ± axis shifts lipid metabolism towards lipid storage, thereby enhancing cell growth. Next, to verify further where FA comes from, I established an oxygen permeable polydimethylsiloxane (PDMS)-based three-dimensional (3D) culture system to allow direct attachment between human adipocyte derived stem cells (ADSCs) and cancer cells. Co-culture of cancer cells with ADSCs resulted in a dispersion phenomenon, and the dispersed spheroid was well matched with the enhanced metastatic potential of cancer cells. Lipid profiling suggested that lipids are the driving force for cancer metastasis via HIF-1Ξ± upregulation. The lipid/HIF-1Ξ± axis promoted tumor metastasis in a colon cancer xenograft mouse model. This study provides new mechanistic insights into the effects of ADSC-released fatty acids on cancer cells as cancer-promoting metabolites, and presents an in vitro model of a biomimetic tumor microenvironment (TME).암에 μžˆμ–΄ λΉ„λ§Œμ΄ μƒˆλ‘œμš΄ μœ„ν—˜μΈμžλ‘œ λŒ€λ‘λ˜κ³  μžˆμ§€λ§Œ, μ§€λ°©μ„Έν¬λ‘œλΆ€ν„° μ–΄λ– ν•œ μ§€μ§ˆ λŒ€μ‚¬μ²΄κ°€ λΆ„λΉ„λ˜μ–΄ μ•”μ˜ μ•…μ„±ν™”λ₯Ό μ΄ˆλž˜ν•˜λŠ”κ°€μ— λŒ€ν•œ μƒμ„Έν•œ 기전은 아직 λ°ν˜€μ§€μ§€ μ•Šμ•˜λ‹€. λ³Έ λ…Όλ¬Έμ—μ„œλŠ” μ•”μ˜ μ„±μž₯ 및 전이 κΈ°μ „μ—μ„œμ˜ 지방산 역할을 규λͺ…ν•˜κΈ° μœ„ν•΄, μ €μ‚°μ†Œ 적응 μœ λ„μΈμž (HIF-1Ξ±)을 νƒ€κ²ŸμœΌλ‘œν•˜λŠ” 연ꡬλ₯Ό μ§„ν–‰ν•˜μ˜€λ‹€. 간암세포주에 지방산 처리 μ‹œ, HIF-1Ξ±κ°€ ν™œμ„±ν™”λ˜κ³  세포 μ„±μž₯이 μ΄‰μ§„λ˜μ—ˆλŠ”λ°, 이 과정에 μžˆμ–΄ 지방산 κ²°ν•© λ‹¨λ°±μ§ˆμΈ FABP5κ°€ λ§€κ°œν•˜λŠ” 것을 ν™•μΈν•˜μ˜€λ‹€. λ§€μ»€λ‹ˆμ¦˜μ μœΌλ‘œ, FABP5λŠ” HIF-1α의 신생합성을 μ΄‰μ§„μ‹œν‚€λŠ” λ™μ‹œμ— FIH/HIF-1Ξ± 결합을 λ°©ν•΄ν•˜μ—¬ ꢁ극적으둜 HIF-1α의 μ „μ‚¬ν™œμ„±μ„ μ¦κ°€μ‹œν‚΄μ„ 규λͺ…ν•˜μ˜€λ‹€. 지방산/FABP5/HIF-1α둜 μ΄μ–΄μ§€λŠ” μ‹ ν˜Έκ²½λ‘œλŠ” κ°„μ•”μ„Έν¬μ˜ μ§€μ§ˆλŒ€μ‚¬λ₯Ό μ§€μ§ˆμΆ•μ  λ°©ν–₯으둜 λ³€ν™”μ‹œμΌœ κ°„μ•”μ„Έν¬μ˜ μ„±μž₯을 μœ λ„ν•˜λŠ” κ²ƒμœΌλ‘œ ν™•μΈλ˜μ—ˆλ‹€. λ‹€μŒμœΌλ‘œ, 지방산이 μ–΄λ””λ‘œλΆ€ν„° μœ λž˜λ˜λŠ”μ§€ 규λͺ…ν•˜κ³ μž, λ³Έ μ—°κ΅¬μ—μ„œλŠ” μ‚°μ†Œ νˆ¬κ³Όλ„κ°€ 높은 polydimethylsiloxane (PDMS)λ₯Ό κΈ°λ°˜μœΌλ‘œν•˜λŠ” 3차원 곡배양 μ‹œμŠ€ν…œμ„ λ„μž…ν•˜μ—¬, 지방 유래 쀄기세포와 암세포λ₯Ό 직접 κ³΅λ°°μ–‘μ‹œμΌœ μ’…μ–‘ λ―Έμ„Έν™˜κ²½μ„ κ΅¬μΆ•ν–ˆλ‹€. 지방 유래 쀄기세포와 곡배양 된 μ•”μ„Έν¬λŠ” 3차원 λ°°μ–‘ μ‹œ μ’…μ–‘μ˜ κ°€μž₯μžλ¦¬μ—μ„œ λΆ„μ‚°λ˜λŠ” ν˜„μƒμ„ λ³΄μ˜€λŠ”λ°, 이 λΆ„μ‚° ν˜„μƒμ€ μ¦κ°€λœ 암세포 이동λŠ₯κ³Ό μΌμΉ˜ν•¨μ„ λ°ν˜”λ‹€. μ§€μ§ˆ 뢄석법을 톡해 암세포와 곡배양 된 μ§€λ°©μœ λž˜ μ€„κΈ°μ„Έν¬μ—μ„œ 지방산 λΆ„λΉ„κ°€ 증가됨을 ν™•μΈν•˜μ˜€κ³ , 이 지방산듀은 암세포 λ‚΄μ˜ HIF-1Ξ± λ°œν˜„ 증가λ₯Ό μœ λ„ν•˜μ—¬ μ’…ν•©μ μœΌλ‘œ μ•” 전이λ₯Ό μ΄‰μ§„μ‹œν‚¨λ‹€λŠ” 것을 규λͺ…ν•˜μ˜€λ‹€. μ•”μ„Έν¬μ—μ„œμ˜ 지방산/HIF-1Ξ± μ‹ ν˜Έκ²½λ‘œλŠ” κ²°μž₯ μ’…μ–‘ 이식 마우슀 λͺ¨λΈμ˜ μ•” 전이λ₯Ό μ¦κ°€μ‹œν‚¨ 것 λ˜ν•œ ν™•μΈν•˜μ˜€λ‹€. 결둠적으둜 λ³Έ μ—°κ΅¬λŠ”, μ’…μ–‘ λ―Έμ„Έν™˜κ²½ λ‚΄μ˜ 지방세포 유래 지방산이 암세포λ₯Ό μ•…μ„±ν™” μ‹œν‚€λŠ” 기전을 μ œμ‹œν•˜κ³  생체 μœ μ‚¬ μ’…μ–‘ λ―Έμ„Έν™˜κ²½μ˜ μ‹€ν—˜μ  λͺ¨λΈλ‘œμ„œμ˜ ν™œμš© κ°€λŠ₯성을 μ‹œμ‚¬ν•œλ‹€.Introduction 1 Material and Methods 5 Results 24 Discussion 73 References 80 Abstract in Korean 91λ°•

    ν°λΉ—μ΄λΌλ²Œλ ˆ μΆœν˜„ λŒ€μ‘μ±… λ§ˆλ ¨μ„ μœ„ν•œ λ―Όκ΄€ μ „λ¬Έκ°€ 합동 ν† λ‘ νšŒ(이상진,μ„œμ§€μ€)

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    O μ£Ό 제 : ν°λΉ—μ΄λΌλ²Œλ ˆ μΆœν˜„ λŒ€μ‘μ±… λ§ˆλ ¨μ„ μœ„ν•œ λ―Όκ΄€ μ „λ¬Έκ°€ 합동 ν† λ‘ νšŒ O λ‚΄ 용 - λ°œν‘œ1)κΈˆκ°• 쀑,ν•˜λ₯˜μ˜ λ¬Όν™˜κ²½ ν˜„ν™© 및 λ³€ν™” νŠΉμ„±_이상진 - λ°œν‘œ2)ν°λΉ—μ΄λΌλ²Œλ ˆμ˜ μƒνƒœνŠΉμ„± 및 λ¬Όν™˜κ²½μ— λ―ΈμΉ˜λŠ” 영ν–₯_μ„œμ§€μ€ O ν† λ‘ μž - 쒌μž₯ : ν—ˆμž¬μ˜ λŒ€μ „λŒ€ν•™κ΅ ν† λͺ©κ³΅ν•™κ³Ό ꡐ수 - ν† λ‘ μž : μ΄μž¬μ€‘ 좩청남도 μˆ˜μ§ˆκ΄€λ¦¬κ³Ό κ³Όμž₯/인치경 λ³΄κ±΄ν™˜κ²½μ—°κ΅¬ λΆ€μž₯/κΉ€μ’…μˆ  μ˜€λ§ˆμ΄λ‰΄μŠ€ 기자/μ—¬κΈΈμš± μΆ©λ‚¨ν™˜κ²½μš΄λ™μ—°ν•© λŒ€ν‘œ- λ°œν‘œ1)κΈˆκ°• 쀑,ν•˜λ₯˜μ˜ λ¬Όν™˜κ²½ ν˜„ν™© 및 λ³€ν™” νŠΉμ„±_이상진 - λ°œν‘œ2)ν°λΉ—μ΄λΌλ²Œλ ˆμ˜ μƒνƒœνŠΉμ„± 및 λ¬Όν™˜κ²½μ— λ―ΈμΉ˜λŠ” 영ν–₯_μ„œμ§€
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