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    題名: 牙髓間葉幹細胞萃取外泌體支架在體內的骨再生效果以及最佳外泌體分離方法之評估
    Evaluation of bone regeneration in vivo of DPSC-sEV scaffold with optimal sEV isolation method
    作者: 李柏叡
    LEE, BORAE
    貢獻者: 牙醫學系碩士班
    馮聖偉
    吳家佑
    關鍵詞: 外泌體;骨再生
    Small extracellular vesicles;Bone regeneration
    日期: 2024-06-24
    上傳時間: 2024-09-12 11:49:44 (UTC+8)
    摘要: 在牙科手術中,引導骨再生的作用對於增強牙齒和植體穩定性、促進齒槽?增高以及鼻竇增高等手術是至關重要的。近期引導骨再生的研究致力於發展出有效的合成生物材料,以促進新骨形成。文獻指出,像是來自牙髓的幹細胞(DPSC)的間質幹細胞衍生的外泌體(MSC-EVs)外泌體表現出顯著的再生潛力。此外,MSC-EVs的不同分離方法對於影響囊泡品質和細胞作用途徑也極其重要。因此,我們的研究旨在比較經由超高速速離心法(UC)和超微薄膜過濾合併粒徑篩析法(SEC)的牙髓間葉幹細胞之外泌體(DPSC-sEV),以找出最佳萃取方法,並著重於它們在大鼠體內骨再生能力的影響。我們的研究結果顯示,與無外泌體的對照組相比,當人工合成骨替代品MBCP ?與UC或SEC萃取出的DPSC-EVs結合時,骨體積分數(BV/TV)、骨小梁數量(Tb. N) 和骨小梁分離度(Tb. Sp)明顯改善。 在大鼠體內骨再生過程中,UC和SEC萃取出的DPSC-EVs之間表現相似的結果。如果以萃取速率及經濟效益來比較,SEC 佔有較大的優勢。這些深入的調查突顯了骨再生方法需持續改進,為牙科手術能有更進一步的發展。
    In surgical dentistry, the role of bone regeneration is imperative in procedures such as enhancing tooth and implant stability, facilitating ridge augmentation, and enabling sinus lifting. Concomitantly, ongoing research endeavors are directed toward the synthesis of advanced biomaterials capable of promoting new bone formation. The therapeutic potential of mesenchymal stem cell-derived small extracellular vesicles (MSC-sEVs), particularly in dental pulp-derived stem cells (DPSC), has exhibited notable regenerative potential. In addition, different isolation methods of MSC-sEVs were crucial in affecting EV quality and cellular action pathways. Our study aimed to determine the optimal isolation methods comparing ultracentrifugation (UC) and ultrafiltration combined with size exclusion chromatography (SEC) of DPSC-sEVs, with a focus on the impacts of their EVs osteogenesis ability in vivo. The findings of our investigation revealed a notable improvement in Bone volume fraction (BV/TV), Trabecular Number (Tb. N), and Trabecular separation (Tb. Sp) when the synthetic bone substitutes MBCP? were combined with either UC or SEC-isolated DPSC-sEVs, as compared to the control group without EVs. Furthermore, UC and SEC isolated DPSC-sEVs showed comparable outcome in bone regeneration in vivo. If compared in terms of isolation rate and economic benefits, SEC has greater advantage. These progressive investigations underscore the perpetual refinement of bone regeneration methodologies, auguring a promising trajectory for the advancement of dental surgical interventions.
    描述: 碩士
    指導教授:馮聖偉
    共同指導教授:吳家佑
    口試委員:馮聖偉
    口試委員:吳家佑
    口試委員:李宜達
    口試委員:彭子祐
    口試委員:王振穎
    資料類型: thesis
    顯示於類別:[牙醫學系] 博碩士論文

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