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  5. The role of FAT1- Hippo/YAP1-p53 signal pathway in oral squamous cell carcinoma progression
 
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The role of FAT1- Hippo/YAP1-p53 signal pathway in oral squamous cell carcinoma progression

Other Title
The role of FAT1- Hippo/YAP1-p53 signal pathway in oral squamous cell carcinoma progression
Type
thesis
Date Issued
2023-07-18
Author(s)
DINH THANH THAO
Advisor
吳明恒
Subjects
系所名稱:醫學資訊研究所碩士班
Description
學位別:碩士
語文別:英文
口試委員:吳明恒 WU, MING-HENG;陳怡帆 CHEN, YI-FAN;張哲菖 CHANG, CHE-CHANG
授權範圍:開放校內, 開放日期為2023-07-25;校外, 開放日期為2028-07-25
Abstract
公共衛生領域中一個重大關切的問題之一是口腔癌,它是全球頭六大最常見的癌症之一。這種疾病影響了全球數以百萬計的人。在全世界,它是前五大最常見的癌症之一,每年新增病例超過650,000例,導致大約330,000人死亡。口腔癌的危險因素之一是口腔潛在惡性疾病(OPMDs)。雖然OPMDs本身並非癌症,但它們增加了發展惡性腫瘤的風險。最常見的OPMDs包括白斑、紅斑症、口腔粘膜下纖維化和口腔苔癬。這些OPMDs進展為癌症的機率取決於特定類型的OPMD和異型增生程度。在台灣,主要類型的OPMD是口腔乳頭狀增生(OVH),其特點是口腔內腫瘤樣組織增生,顏色可能從白色到粉紅色或紅色不等。這些腫瘤通常出現在口腔內襯的內側,特別是臉頰,但也可能出現在舌頭、口腔上蓋或齒齦上。
在我們之前的研究中,我們發現FAT1基因的突變率在進展性OVH組中明顯高於非進展性組。這個證據使我們推測患有FAT1突變的OVH更有可能進展為口腔癌。此外,由於超過60%的口腔癌中含有p53突變,我們也在本研究中探討FAT1突變是否可以通過YAP1調節p53蛋白的表達來促進OSCC惡性轉化。
在本研究中,我們探討FAT1、YAP1和p53之間的關係。我們利用shRNA介導來基因沉默來人類口腔癌細胞株中的FAT1、YAP1和p53表達。我們還使用了YAP1抑制劑Verteporfin來研究YAP1對p53的影響。我們的結果顯示FAT1的沉默導致YAP1和p53的表達上升。相比之下,用shRNA沈默或Verteporfin標的YAP1皆降低p53的表現量,但對FAT1幾乎沒有影響。此外,p53的沉默對YAP1或FAT1則沒有影響。同時沉默YAP1和p53導致細胞增殖減少。有趣的是,我們發現Verteporfin通過兩種機制:蛋白體酶解降解和溶酶體降解來降低p53的穩定性。這些結果表明FAT1、YAP1和p53可能屬於同一信號途徑,促進了癌症的惡性發展。總之,我們的研究為FAT1、YAP1和p53之間的關係提供了新的見解。這些發現表明,針對這些基因之間的相互作用可能是開發新的癌症治療策略的潛在策略。
URI
https://handle.ncl.edu.tw/11296/5epxv9
https://203.71.86.71/handle/123456789/10077

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