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完整後設資料紀錄
DC 欄位 | 值 | 語言 |
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dc.contributor.advisor | 郭柏齡 | |
dc.contributor.author | Chu-Jung Cheng | en |
dc.contributor.author | 鄭竹容 | zh_TW |
dc.date.accessioned | 2021-06-15T16:43:06Z | - |
dc.date.available | 2020-08-12 | |
dc.date.copyright | 2015-08-12 | |
dc.date.issued | 2015 | |
dc.date.submitted | 2015-08-10 | |
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dc.identifier.uri | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/53079 | - |
dc.description.abstract | 細胞周圍環境的機械性質對細胞行為有非常大的影響,腫瘤細胞的其中一個物理特性即是擁有較高的間質液靜水壓力。過高的間質液壓力會導致藥物或抗體的攝取降低,因此造成癌症治療效果不張,但是較高的間質液壓力對癌細胞行為的直接影響我們尚未參透,了解他們之間的關係有助於癌症治療的進步和發展。在本實驗中,我們發展出一套細胞培養系統,能對活體細胞模擬靜水壓力 0 到 20 毫米汞柱,去觀測細胞的行為表現。結果顯示,較高的間質液靜水壓力會增加肺癌細胞的移動速度、攤開的面積、絲狀偽足的數目和單隻細胞的體積大小。相對來說,在正常的肺細胞中,較高的間質液壓力對上述的各種影響和肺癌細胞相比沒有明顯差異,從分子生物的觀點來探討,我們利用西方點墨法觀測到,高間質液靜水壓力透過 ERK1/2 上調 aquaporin-1 進而促進肺癌細胞的移動,但在正常細胞中並無觀察到上述現象。綜合物理和分子生物觀察到的數據結果,我們證明較高的間質液靜水壓力主要是透過 ERK1/2 的磷酸化進而活化AQP1,促使改變面積、絲狀偽足的數目和單隻細胞體積大小,因此可大幅增強肺癌細胞的侵襲力和行動能力。 | zh_TW |
dc.description.abstract | Mechanical cues from microenvironment of cells have a great influence on the cell’s behaviors. Many solid tumors are characterized by high interstitial fluid pressure (IFP), which leads to a reduced uptake of therapeutic drugs or antibodies into the tumors and results in a significant obstacle in cancer therapy. However, whether the increased IFP plays a direct role in behaviors of cancer cells remains unclear. Understanding of relationships between the increased IFP and cancer cell’s behaviors holds the promise of improvement of strategies for cancer therapy. In this work, we developed a cell-culturing system that imposed various hydrostatic pressures (HPs) ranging from 0 to 20 mmHg on cultured cells to simulate the increased IFP and examined the changes in cell’s behaviors. We found that high HP enhances the migration speed, spreading area, number of filopodia, and volume of individual lung cancer cells. By contrast, those changes in normal lung cells were not significant after exposure to high HP. Biochemical studies using western blotting revealed that high HP promoted motility of lung cancer cells via ERK1/2-mediated activation of aquaporin-1 (AQP1), whereas high HP elicited minimal changes in cell motility and morphology in normal lung cells. Our data indicate that high HPs significantly change the invasiveness of lung cancer cells and highlighted the role of ERK1/2-dependent activation of AQP1 in these changes. | en |
dc.description.provenance | Made available in DSpace on 2021-06-15T16:43:06Z (GMT). No. of bitstreams: 1 ntu-104-R02945004-1.pdf: 7305168 bytes, checksum: 9db5b5074bc531703a20708c4707de76 (MD5) Previous issue date: 2015 | en |
dc.description.tableofcontents | Abstract i
摘要 iii Content iv List of Figures v List of Tables vi Chapter 1. Introduction 1 1.1 Interstitial Fluid Pressure 1 1.2 The Causes of Increased IFP in Tumors 3 1.3 Increased IFP Imposes an Obstacle on Clinical Treatment 5 1.4 Cell Migration 5 1.5 The Relationship between IFP and AQP 7 1.6 AQPs 8 1.7 AQP1 10 1.8 ERK1/2 11 Chapter 2. Materials and methods 15 2.1 Cell Culture 15 2.2 Devices for Pressure application 15 2.2.1 Fabrication and operation of Device 1 16 2.2.2 Device 2 18 2.3 ERK1/2 inhibitor on ERK1/2 phosphorylations 20 2.4 Cell Tracking 21 2.5 Immunofluorescence studies 22 2.6 Cell Volume Estimation 23 2.9 Western Blot Analysis 26 Chapter 3. Results 29 3.1 The relationships between IFP and cell migration 29 3.2 The relationships between IFP and cell area 31 3.3 The relationships between IFP and cell volume 33 3.4 The effect of hydrostatic pressure on ERK1/2, p- ERK1/2 and AQP1 expression 34 Chapter 4. Discussion and Conclusion 38 4.1 The effect of high IFP on cell migration 38 4.2 The effect of high IFP on cell size and volume 39 4.3 Western blot analysis of ERK1/2, p- ERK1/2 and AQP1 expression 41 4.4 Future works 42 Chapter 5. Reference 44 | |
dc.language.iso | zh-TW | |
dc.title | 增高之靜水壓對細胞移動的影響:水通道蛋白活化的角色 | zh_TW |
dc.title | Effects of increased hydrostatic pressure on cell migration:Roles of Aquaporin1 (AQP1) activation | en |
dc.type | Thesis | |
dc.date.schoolyear | 103-2 | |
dc.description.degree | 碩士 | |
dc.contributor.oralexamcommittee | 趙本秀,黃念祖 | |
dc.subject.keyword | 細胞移動,靜水壓,間質液壓,肺癌細胞,正常肺細胞,水通道蛋白,胞外信號調節激?, | zh_TW |
dc.subject.keyword | Cell migration,Hydrostatic pressures,Interstitial fluid pressure,Lung cancer cell,Lung normal cell,Aquaporin1,ERK1/2, | en |
dc.relation.page | 47 | |
dc.rights.note | 有償授權 | |
dc.date.accepted | 2015-08-11 | |
dc.contributor.author-college | 電機資訊學院 | zh_TW |
dc.contributor.author-dept | 生醫電子與資訊學研究所 | zh_TW |
顯示於系所單位: | 生醫電子與資訊學研究所 |
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