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  • 學位論文

利用聚乙二醇和葉酸接枝磁性明膠/磷酸鈣作為肺癌熱療之研究

PEG-FA Conjugated Magnetic Gelatin/CaP for Lung Cancer Hyperthermia

指導教授 : 許淙慶 林峯輝

摘要


雙水磷酸氫鈣 ( CaHPO4•2H2O ) 為無毒性、可生物降解,且具良好生物相容性之材料。本研究在製備的過程中,藉由摻雜二價鐵離子 ( Fe2+ ),取代雙水磷酸氫鈣中鈣離子 ( Ca2+ ) 的晶格點位置,可使材料具有磁性。若將材料置於癌細胞內部或腫瘤表面,再施予外加交流磁場,即可利用磁滯損失產生熱,使溫度上升至43~46℃,進而便可殺死癌細胞。 然而為了延長材料在血液中停留的時間,和提高標靶的成功率,我們將進行材料的表面改質,在材料表面接枝上聚乙二醇 ( PEG ) 和葉酸 ( FA )。在本研究中,我們先利用共沉法製備出含鐵之磁性雙水磷酸氫鈣,過程中將導入具有多種官能基之天然高分子­­­明膠 ( gelatin ) 當作連結分子,使PEG-FA可以改質於磁性的雙水磷酸氫鈣上,期望將來有機會利用霧化吸入的方式應用於肺癌熱療上。

並列摘要


Dicalcium phosphate dehydrate ( DCPD ) is the major component of hard tissues like bone and teeth, which is non-toxic, biocompatibility and biodegradable. In this study, the Fe-DCPD particles was formed by co-precipitation method. The iron ions can substitute calcium ions of DCPD and form a magnetic DCPD;by doing this it can release heat in alternating magnetic field because it has magnetism. As temperature rise up to 43~46℃, the heat treatment will cause cancer cells dead. However, in order to extend the blood circulation time and improve the targeting rate, the surface modification is necessary. Therefore, gelatin was used as a mediator to immobilize polyethylene glycol (PEG) and folic acid (FA) on the magnetic particle surface. It is believed that magnetic Fe-DCPD/Gelatin-PEG-FA is one of the most potential materials in lung cancer hyperthermia by using in halation in the future.

並列關鍵字

DCPD gelatin folic acid PEG hyperthermia co-pricipitation hysteresis loss inhalation

參考文獻


[1] Weinberg, Robert E., The biology of cancer , New York:Garland Science , (2007)ISBN 0-8153-4076-1.
[3] Chang W. Song, “Effect of local hyperthermia on blood flow and microenvironment”, Cancer Res , 44:4721-4730 , 1984.
[4] Charles M. Haskell MD, F.A.C.P., “ Cancer Treatment ” , 4th ed. W.B. Saunders, Philadelphia, 1995.
[5] Adam Chicheł “Hyperthermia – description of a method and a review of clinical applications”, Reports of Practical Oncology & Radiotherapy, Volume 12, Issue 5, September-October 2007, Pages 267-275.
[6] Stéphane Mornet, Sébastien Vasseur, Fabien Grasset and Etienne Duguet, “Magnetic nanoparticle design for medical diagnosis and therapy”, J. Mater. Chem., vol.14, 2004, pp.2161-2175.

被引用紀錄


莊竣宇(2015)。磁性高分子複合材料於熱治療與熱電材料之應用〔碩士論文,中原大學〕。華藝線上圖書館。https://doi.org/10.6840/cycu201500548

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