TWI293113B - Magnetic nanoparticles with fluorescent and specific targeting functions - Google Patents
Magnetic nanoparticles with fluorescent and specific targeting functions Download PDFInfo
- Publication number
- TWI293113B TWI293113B TW094146105A TW94146105A TWI293113B TW I293113 B TWI293113 B TW I293113B TW 094146105 A TW094146105 A TW 094146105A TW 94146105 A TW94146105 A TW 94146105A TW I293113 B TWI293113 B TW I293113B
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- Taiwan
- Prior art keywords
- magnetic nanoparticle
- fluorescent display
- patent application
- specific labeling
- labeling function
- Prior art date
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- A—HUMAN NECESSITIES
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- Investigating, Analyzing Materials By Fluorescence Or Luminescence (AREA)
- Investigating Or Analysing Materials By The Use Of Chemical Reactions (AREA)
- Magnetic Resonance Imaging Apparatus (AREA)
Description
J293113 九、發明說明: 【發明所屬之技術領域】 本發明係有關於一種磁性奈米微粒,且特別有關於一 種具有專一性標不功能與營光顯不之磁性奈米微粒。 【先前技術】 磁性奈米微粒應用於生物技術方面包括:造影、輔助 診斷及辅助治療及生物材料分離等。在造影方面主要是作 • 為造影劑或追蹤劑,用於提高影像上的對比效果或追蹤特 定疾病。此外磁性奈米微粒亦可用於藥物釋放或癌症治療 - 等。 ' 目前已有多項影像分析技術應用於人體疾病診斷上, 如X光電腦斷層攝影裝置(Computer Topography,CT)、磁 振造影、超音波影像攝影(ultrasound,US)等等。已普遍應 用的電腦斷層技術檢查須使用X光,其成像原理為利用人 * 體中不同結構因具有不同密度而對X光繞射結果不同,且 為改善此項技術在臨床檢驗上之使用效果5在檢測時可使 用造影劑以增加組織、器官間之影像的對比。然而由於此 技術需使用X光,會造成游離輻射,因此相對來說,不會 產生游離輻射的磁振造影(MRI)提供另一項診斷時的選擇。 磁振造影不同於一般的X光攝影或電腦斷層,它並不 是利用X光來形成影像,其成像的主要訊號來源是由觀察 0424-A21175TWF(N2);P02940019TW;esmond 5 •1293113 強磁場下質子磁旋(magnetic spin)與無線電波頻率電磁輻 • 射的相關而得。在將欲分析的器官或組織放置於強磁場下 後,利用無線電波能量的撞擊,接著質子的核磁化產生遲 緩現象(relaxation)而形成影像。 一般來說,目前MRI是一般醫學檢測中除了斷層掃 描、超音波檢查的更精密檢測,一般病人事先經由斷層掃 描、超音波檢查後得知腫瘤特性後經由MRI來確定病灶。 ⑩ 順磁性氧化鐵奈米微粒在MRI顯影劑上有提升對比度 的特性。氧化鐵微粒在一定的尺寸之下可以增加水分子的 " 自旋速度,進而增加影像對比度,是目前新囉起的顯影劑。 • 然而,目前市售之磁性奈米顯影劑並没有針對專一性修飾 過的顯影劑,因而產生的對比效果仍有改善的空間。 此外,如果除了磁振造影欲以光學檢測方式進一步確 定病灶,以目前的技術而言,需要使用額外的螢光劑才能 籲以光學影像偵測重複確定病灶,除了手續複雜外,兩次偵 測的結果也會因為時間上的延遲而有所誤差,導致偵測結 果無法即時比對。 【發明内容】 有鑑於此,本發明的目的即是針對上-述缺失提出一種 具有專一性標示功能,並且結合磁性與光學影像偵測之多 功能顯影劑。 0424-A21175TWF(N2);P02940019TW;esmond 6 •1293113 ' 為達上述與其他目的,本發明係在磁性奈米微粒上接 - 枝專一性修飾的官能基,以增加其標的效率,在MRI顯影 效果上能夠更加突顯出病灶對比。此外,在磁性奈米微粒 " 上同時接枝螢光染劑,可提供光學檢測上作為另一種即時 診斷的方式,以再次確認病灶。 根據上述,本發明之多功能磁性奈米微粒包括:一磁 性奈米微粒;一生物相容性高分子,以化學鍵結修飾該磁 • 性奈米微粒;一螢光染劑,耦接至該生物相容性高分子; 以及,一專一性辨識分子,耦接至該生物相容性高分子。 - 為讓本發明之上述和其他目的、特徵、和優點能更明 ' 顯易懂,下文特舉出較佳實施例,並配合所附圖式,作詳 細說明如下: 【實施方式】 本發明結合專一性標示功能與具有螢光特性之奈米磁 性檄粒,其中專一性標示功能可以強化標的物的影像,而 結合兩種不同的訊號來源(磁性與光性)可以增加對病灶的 確定,因此增加檢測的方便性與正確性。 請參閱第1圖,本發明之多功能磁性奈来微粒1〇〇, 係利用一生物相容性高分子12,以化學鍵結方式修飾一磁 性奈米微粒10,且生物相容性高分子12同時耦接一螢光 染劑14及一專一性辨識分子16。如圖中所示,生物相容 0424-A21175TWF(N2);P02940019TW;esmond 7 1293113 性高分子12最好披覆磁性奈米微粒1G而形成—殼核結構。 磁性奈米微粒1〇較佳為鐵、結、錄、或前述之氧化物, 但亦可為其他任何具有磁性的單一材料或複合物,其中又 以具有超順磁性者更佳。磁性奈綠粒1()的_較佳約 3-10nm。 適當的生物相容性高分子12包括但不限於:聚乙二醇 (PEG)、聚乳酸-聚乙二醇(PLA-PEG)、聚丙交酯(pLA)、聚 乙父S日(PGA)、聚己内酯(pCL)、或聚甲基丙烯酸甲酯 (PMMA)等。生物相容性高分子12可利用一偶合劑(未顯示) 與磁性奈米微粒1Q形成化學鍵結並形成單層批覆。較佳的 偶合制為胺基三烷氣基矽烷(amino trialkoxysilane),例如 3 胺基丙基—乙氧基梦烧(3_amin〇pr〇pyitriethoxysilane ; APS)。生物相容性高分子12可以增加磁性奈米微粒1〇在 @ t *液相容性,也較容易排出人體。值得 應〉主忍的7C ’本發明藉此可免除任何界面活性劑的使用。 生物相谷性高分子12,鍵結至磁性奈米微粒10後, 可進一步將其末端修飾形成反應性官能基,以利後續與螢 ^ fU4H性辨識分子16進行耦接。常用的專-性 辨識刀子16例如有:抗體、蛋白質、胜肽、酵素、醣類、 醋蛋白 '核酸 '脂質等。熟悉此技藝人士可根據實際需要 送擇專一性辨識分子,得到各種標示式磁性奈米微粒,以 0424-A21175TWF(N2);p〇294〇〇i 9TW;esmond •1293113 料其標的_。例如可❹雜分子來專—觸乳癌細 I上的f〇late接受器(receptor),而在此例中,葉酸分子的 _接方式可利用末端具有胺基的生物相容性高分子12叙 之反應形成-C〇Nh_鍵結。 ,、 本發明之礤性奈米微粒更同時耦接螢光染劑14,以便 '、光车心’則,再次確認病灶。螢光染劑14較佳亦是以共 價鍵與生物相容性高分子12鍵結。適當螢光染劑包括:有 #機染劑、無機染劑、有機金屬錯合物等。螢光染劑的激發 與放射光源並無特別限定,可為可見光(VIS)、近紅外光 (NIR)、或紫外光(UV)等。經過上述螢光染劑14與專一性 痄戮刀子6祸接後的奈米微粒,其粒技較佳為。 若尺寸太大則顆粒不容易進入細胞,或者導致被白血球吞 噬。 藉由磁性奈米微粒耦接螢光染劑,本發明可結合兩種 訊號來源(磁性與光性)來增加對病灶的確定,而且實驗結 果顯示’螢光染劑的耦接並不會影響磁性奈米微粒在MRI 上的顯影對比度。 【實施例1 :磁性奈米粒子的製備】 將 FeCl2.4H20 2.98245g (0.015mole)加入 FeCl3.6H20 8.109g(0.03mole)以攪拌子攪拌至全溶,放人雙頸瓶中用攪 0424-A21175TWF(N2);P02940019TW;esmond ‘1293113 摔器以5_>m在6(TC環境下擾掉。將5ΝΝ·以每秒一 滴的速率(1〇(M遍/Sec)滴入雙頸瓶中,反應至全黑測其 pH值為13即停止加入。持續攪拌15分鐘後冷卻至室溫, 利用離心機3000rpm轉10分鐘收取沉殿物。將沉殿物分別 放置50ml離心管中,每管浸泡〇 5ΝΗα並使其沉澱物分 散,利用9000rpm轉30分鐘收取沉澱物,加DMS〇(dimethyl sulfoxide)稍微沖洗,每管加入DMs〇使其沉澱物分散後, • 利用離心機9000rPm轉30分鐘收取上層液。通過0.2聚四 氟乙炸濾膜(PTFE filter)之上層液即得懸浮之四氧化三鐵 • 奈米微粒。 【實施例2 :生物相容性高分子修飾】 將聚乙二醇雙叛酸酯(PEG biscarboxylate ; Mn=600) 0」67mol在圓底燒瓶中加入(U8m〇l亞硫醯氯(thionyl • chloride),加熱回流I·5小時後,減壓(76mmHg)蒸餾1小 時。再加入 〇·44 mol 2,2,2-三氟乙醇(2,2,2-trifluoroethanol) 加熱回流,並減麈蒸館1小時形成PEG-二三氟乙酯(PEG-ditrifluoroethylester) ° 將135 mol APS加入PEG-二三氣乙酯溶液中反應8小 時。將實施例1中〇.866mmole的氧化鐵溶在l〇〇mlDMSO 中加入 PEG-三氟乙酯梦院(PEG-trifluoroetliylester silane) 0424-A21175TWF(N2);P02940019TW;esmond 10 1293113 1.4mmole。最後力口入0.016mole 乙二胺(EDA)搖晃震盡2 ‘小時,得到末端胺基的高分子修飾氧化鐵微粒。 【實施例3:專一性辨識分子修飾】 將1.7mmole葉酸溶在DMSO中震|至全溶,再將 0.76mmole NHS(N-hydroxysuccinimide)與 3.9mmole EDAC (l-ethyl-3-(3-(dimethylamino)-propyl)carbodiimide)溶在上 # 述溶液中並且於°C下震盪1小時。將溶液調至pH=9加 入200mg(0.58mmole)實施例2之氧化鐵微粒,溶在上述 • DMS〇溶液中,搖晃8小時,得到具有葉酸修飾之氧化鐵 ' 微粒。 【實施例4 :螢光染劑修飾】 將2mg/ml已接枝葉酸之氧化鐵微粒溶至1〇ml去離子 水溶液中,加入 1 (T6mole/ml NIR 染劑 CypHer5E (Amersham Biosciencese公司)lml至溶液中反應7小時,得到兼具專 一性分子與染劑修飾的氧化鐵微粒。
【實施例5 ··對比度測試】以BRUKER公司之〇·47Τ 20MHz—MQ20mini_spec測量實施例4所得之氧化鐵微粒, 付到對比度為12 (r2/rl=2〇r/16.7),優於市售SCHERING 0424~A21175TWF(N2);P02940019TW;esmond •1293113 公司Resovist⑧之顯影劑(對比度=6 〇4)。 【實施例6 :細胞株專一性辨識】 分種Hff(人類包皮纖維組織母細胞)、HeLa(人類 ^ 頸上皮癌細胞)、KB(人類口腔上皮癌細跑)、 MDA_MB_231(人類乳癌細胞)四種細胞株,加入〗 t汽施例
4所得之氧化鐵微粒(200 pg/ml),經過清洗並回收細胞株 後’以TEM切片檢測’其結果如第2-5圖所示。其中,心 了 Hff因為沒有folate接受器外,其餘具有如咖接受哭的 細胞株KB、MDA-MB-231、HeLa均可看到氧化鐵微粒進 入細胞中,如圖中箭頭所示。 另一方面,以流式細胞儀(flow cytometry)檢測具有榮 光之細胞比例,檢測結果如下表: 細胞株 氧化鐵微粒攝入率 Hff (控制組) 4.95% HeLa 31.90% MDA-MB-231 54.17% KB 70.26% 由表中可看出,具有folate接受器的細胞株KB、 MDA-MB-231、HeLa ’其攝入比例遠大於控制組pjff,符 合丁EM的切片結杲。 雖然本發明已以數個較佳實施例揭露如上,然其並非 0424-A21175TWF(N2);P02940019TW;esmond 12 1293113 用以限定本發明,任何熟習此技藝者,在不脫離本發明之 精神和範圍内,當可作任意之更動與潤飾,因此本發明之 保護範圍當視後附之申請專利範圍所界定者為準。
0424-A21175TWF(N2);P02940019TW;esmond 13 .1293113 【圖式簡單說明】 第1圖繪示本發明具有專一性標示功能與螢光顯示之 磁性奈米微粒。 第2-5圖分別為實施例6中四種細胞株Hff'KB、 HeLa、MDA-MB_231 的 TEM 的切片結果。 【主要元件符號說明】 100〜多功能磁性奈米微粒; 10〜磁性奈米微粒; 12〜生物相容性高分子; 14〜榮光染劑; 16〜專一性辨識分子。 0424-A21175TWF(N2);P02940019TW;esmond 14
Claims (1)
- .1293113 十、申請專利範圍: 1. 一種具有專一性標示功能與螢光顯示之磁性奈米微 粒’包括· 一磁性奈米微粒; 一生物相容性高分子,以化學鍵結修飾該磁性奈米微 粒; 一螢光染劑,耦接至該生物相容性高分子;以及 一專一性辨識分子,麵接至該生物相容性高分子。 2. 如申請專利範圍第1項所述之具有專一性標示功能 與螢光顯示之磁性奈米微粒,其中該磁性奈米微粒具有超 順磁性。 3. 如申請專利範圍第1項所述之具有專一性標示功能 與螢光顯示之磁性奈米微粒,其中該磁性奈米微粒擇自下 歹1]至少其一:鐵、钻、鎳、或前述之氧化物。 4. 如申請專利範圍第1項所述之具有專一性標示功能 與螢光顯示之磁性奈米微粒,其中該磁性奈米微粒之粒徑 約為 3_10nm 〇 5. 如申請專利範圍第1項所述之具有專一性標示功能 與螢光顯示之磁性奈米微粒,其耦接有該螢光染劑與該專 一性辨識分子之磁性奈米微粒,粒徑約15-100nm。 6. 如申請專利範圍第1項所述之具有專一性標示功能 與螢光顯示之磁性奈米微粒,其中該螢光染劑之激發或放 0424-A21175TWF(N2);P02940019TW;esmond 15 •1293113 射光源為可見光、近紅外光、或紫外光。 7. 如申請專利範圍第1項所述之具有專一性標示功能 與螢光顯示之磁性奈米微粒,其中該螢光染劑為有機染 劑、無機染劑、或有機金屬錯合物。 8. 如申請專利範圍第1項所述之具有專一性標示功能 與螢光顯示之磁性奈米微粒,其中該專一性辨識分子為抗 體、蛋白質、胜肽、酵素、醣類、醣蛋白、核酸、或脂質。 馨 9.如申請專利範圍第1項所述之具有專一性標示功能 與螢光顯示之磁性奈米微粒,其中該生物相容性高分子係 , 擇自下列至少其一:聚乙二醇(PEG)、聚乳酸-聚乙二醇 、 (PLA-PEG)、聚丙交酯(PLA)、聚乙交酯(PGA)、聚己内酯 (PCL)、或聚曱基丙烯酸曱酯(PMMA)。 10. 如申請專利範圍第1項所述之具有專一性標示功能 與螢光顯示之磁性奈米微粒,其中該生物相容性高分子末 •端具有胺基。 11. 如申請專利範圍第1項所述之具有專一性標示功能 與螢光顯示之磁性奈米微粒,其中該螢光染劑與該專一性 辨識分子係以共價鍵與談生物相容性高分子鍵結。 12. 如申請專利範圍第11項所述之具有專一性標示功 能與螢光顯示之磁性奈米微粒,其中談專一性辨識分子與 該生物相容性高分子形成-CONH-鍵結。 0424-A21175TWF(N2);P02940019TW;esmond 16 •1293113 13. 如申請專利範圍第1項所述之具有專一性標示功能 與螢光顯示之磁性奈米微粒,其中該生物相容性高分子係 披覆該磁性奈米微粒形成一殼核結構。 14. 如申請專利範圍第11項所述之具有專一性標示功 能與螢光顯示之磁性奈米微粒,其中該生物相容性高分子 係形成一單層披覆。 15. 如申請專利範圍第1項所述之具有專一性標示功能 拳 與螢光顯示之磁性奈米微粒,其中該生物相容性高分子係 經由一偶合劑與該磁性奈米微粒形成鍵結。 ' 16.如申請專利範圍第15項所述之具有專一性標示 w 功能與螢光顯示之磁性奈米微粒,其中該偶合劑為胺基 三烧氧基石夕炫(amino trialkoxysilane)。0424-A21175TWF(N2);P02940019TW;esmond 17
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US (1) | US20070148095A1 (zh) |
JP (1) | JP2007169261A (zh) |
TW (1) | TWI293113B (zh) |
Families Citing this family (27)
Publication number | Priority date | Publication date | Assignee | Title |
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US8060179B1 (en) | 2006-11-16 | 2011-11-15 | Scientific Nanomedicine, Inc. | Biomagnetic detection and treatment of Alzheimer's Disease |
US8118754B1 (en) | 2007-11-15 | 2012-02-21 | Flynn Edward R | Magnetic needle biopsy |
US9964469B2 (en) | 2005-02-28 | 2018-05-08 | Imagion Biosystems, Inc. | Magnetic needle separation and optical monitoring |
US20080095699A1 (en) * | 2006-10-20 | 2008-04-24 | Shiying Zheng | Imaging contrast agents using nanoparticles |
US20070258908A1 (en) * | 2006-04-27 | 2007-11-08 | Lanza Gregory M | Detection and imaging of target tissue |
TWI321133B (en) * | 2006-08-01 | 2010-03-01 | Univ Kaohsiung Medical | Folate-receptor-targeting iron oxide nanoparticles coated with poly(ethylene glycol) |
US8447379B2 (en) | 2006-11-16 | 2013-05-21 | Senior Scientific, LLC | Detection, measurement, and imaging of cells such as cancer and other biologic substances using targeted nanoparticles and magnetic properties thereof |
EP2246702B1 (en) * | 2007-12-03 | 2015-10-07 | Tamagawa Seiki Co., Ltd. | Biosensing method using coated magnetic microparticles and biosensing device to be used in the method |
US9107858B2 (en) * | 2007-12-05 | 2015-08-18 | Wisconsin Alumni Research Foundation | Dendritic cell targeting compositions and uses thereof |
US20110171715A1 (en) * | 2008-04-22 | 2011-07-14 | Industrial Technology Research Institute | Biocompatible polymer and magnetic nanoparticle with biocompatibility |
WO2010029947A1 (ja) * | 2008-09-09 | 2010-03-18 | 国立大学法人京都大学 | 造影剤組成物及びその製造方法 |
JP2010112861A (ja) * | 2008-11-07 | 2010-05-20 | Univ Of Tsukuba | 表面の修飾された希土類含有セラミックスナノ粒子 |
US10194825B2 (en) | 2009-11-06 | 2019-02-05 | Imagion Biosystems Inc. | Methods and apparatuses for the localization and treatment of disease such as cancer |
CA2780148C (en) | 2009-11-06 | 2017-02-28 | Scientific Nanomedicine, Inc. | Detection, measurement, and imaging of cells such as cancer and other biologic substances using targeted nanoparticles and magnetic properties thereof |
US20130105709A1 (en) * | 2010-06-04 | 2013-05-02 | Michael Himmelhaus | Optical Cavity Mode Excitations in Magnetic Fluorescent Microparticles |
JP5578613B2 (ja) * | 2010-08-04 | 2014-08-27 | 国立大学法人名古屋大学 | 磁性ナノ粒子複合体及び当該磁性ナノ粒子複合体による細胞の標識方法 |
WO2013114247A2 (en) | 2012-02-01 | 2013-08-08 | Koninklijke Philips N.V. | Multimodal fiducial marker and marker arrangement |
CN102898461A (zh) * | 2012-10-25 | 2013-01-30 | 南京大学 | 用于生命体系检测的荧光、磁共振双功能纳米超顺磁粒子的制备方法 |
CN103663570A (zh) * | 2013-11-15 | 2014-03-26 | 太原理工大学 | 一种在室温下制备卵巢癌靶向纳米四氧化三铁颗粒的方法 |
TWI689310B (zh) | 2014-07-11 | 2020-04-01 | 巨生生醫股份有限公司 | 治療鐵缺乏症之方法 |
AU2016298210B2 (en) | 2015-07-28 | 2021-12-09 | Board Of Regents, The University Of Texas System | Implant compositions for the unidirectional delivery of therapeutic compounds to the brain |
CN105126127B (zh) * | 2015-10-14 | 2017-11-10 | 常州大学 | 一种结肠癌核磁共振多功能造影剂的制备方法 |
CN106753335A (zh) * | 2016-11-15 | 2017-05-31 | 淮阴工学院 | 一种用高分子改性有机荧光染料防止荧光淬灭的方法 |
CN106770135A (zh) * | 2017-01-25 | 2017-05-31 | 东南大学 | 金属增强荧光信号的编码微球及其制备方法和应用 |
CN108109805B (zh) * | 2017-12-18 | 2020-05-05 | 山东师范大学 | 一种由peg调控制得的羧酸型磁性纳米粒子及其应用 |
CN109957071B (zh) * | 2017-12-22 | 2022-03-11 | 财团法人工业技术研究院 | 磁性粒子及其制造方法 |
CN108943700B (zh) * | 2018-07-18 | 2020-10-02 | 中南大学 | 一种聚左旋乳酸/四氧化三铁复合骨支架的制备方法 |
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US7459145B2 (en) * | 2002-10-25 | 2008-12-02 | Georgia Tech Research Corporation | Multifunctional magnetic nanoparticle probes for intracellular molecular imaging and monitoring |
US7462446B2 (en) * | 2005-03-18 | 2008-12-09 | University Of Washington | Magnetic nanoparticle compositions and methods |
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2005
- 2005-12-23 TW TW094146105A patent/TWI293113B/zh active
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2006
- 2006-05-10 US US11/430,894 patent/US20070148095A1/en not_active Abandoned
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TW200724904A (en) | 2007-07-01 |
JP2007169261A (ja) | 2007-07-05 |
US20070148095A1 (en) | 2007-06-28 |
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