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  5. 使用近紅外螢光成像監測骨生成與骨整合的非侵入性方法:從探針設計、合成到動物模型
 
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使用近紅外螢光成像監測骨生成與骨整合的非侵入性方法:從探針設計、合成到動物模型

Other Title
Non-Invasive Method for Monitoring Osteogenesis and Osseointegration Using Near-Infrared Fluorescent Imaging: From Probe Design and Synthesis to Animal Models
Type
thesis
Date Issued
2025-06-13
Author(s)
林建州
Advisor
陳瑞明 ;賴文福
Subjects
系所名稱:醫學科學研究所博士班
Publisher
醫學科學研究所博士班
Description
學位別:博士
口試委員:陳瑞明; 劉興華; 廖崇斌; 翁芸芳; 張榮善
關鍵字:人工牙根、金屬假影、骨生成、骨整合、分子影像、近红外螢光探针、接合蛋白α5β
Abstract
植入人工牙根(植牙)和人工關節等修復體後,骨生成、骨分化和骨整合的臨床評估非常困難。傳統影像技術如X光和電腦斷層掃描(CT)常受金屬假影干擾,無法準確顯示骨與植入物的界面,限制了對骨修復過程的監測。因此,迫切需要更靈敏且能實時監測骨生成的先進影像技術。本研究開發了兩種近紅外螢光(NIRF)探針,專門用於骨修復分子影像。第一種探針針對人類間質幹細胞(MSC)分化成骨細胞的過程,透過結合標靶接合蛋白α5β1,識別成骨細胞及其前驅細胞,實現實時可視化成骨分化。第二種探針則結合了NIR螢光金納米團簇與pamidronate藥物,專門靶定骨組織中主要礦物質的氫氧基磷灰石(HA)。這種探針能準確標記新生骨質,反映骨形成的實際情況。體外實驗結果證實,這兩種探針只與分化成骨細胞結合,不會與未分化的MSC結合,顯示其高特異性與靈敏度。進一步的體內研究使用12隻Sprague Dawley大鼠,分為對照組、X光與CT影像組,以及NIRF影像組,於前硬顎植入鈦合金螺絲後28天進行成像。X光和CT因金屬假影導致骨–植入物界面模糊,無法準確評估骨成熟情況;而NIRF影像組則清晰呈現螢光信號,明確顯示骨整合位置,且無金屬假影干擾。組織學分析也支持了影像結果,確認新骨形成與NIRF信號一致。總體而言,本研究證明這兩種NIRF探針能高效、準確地監測骨生成及骨整合,克服了傳統影像技術的限制。這項技術不僅有助於臨床評估植入物的成功,還能促進新型植入物設計和表面改良,提升骨整合效果。未來,透過實時影像監測骨修復,將有助於改善患者治療結果及植入物管理。
URI
https://203.71.86.71/handle/123456789/9453

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