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稀土摻雜上轉(zhuǎn)換氟化物納米材料的生物應(yīng)用(標(biāo)記及探針)
1:稀土摻雜上轉(zhuǎn)換氟化物納米顆粒在生物分子檢測(cè)中的應(yīng)用
利用靜電吸引層層組裝的方法在NaYF4BYb3+,Er3+外部引入氨基,從而能夠和生物素相連,隨后體系中再加入同生物素相連的金納米顆粒,當(dāng)抗生物素蛋白存在的時(shí)候會(huì)連接兩種納米顆粒,從而發(fā)生能量轉(zhuǎn)移,此時(shí)金會(huì)吸收稀土上轉(zhuǎn)換納米材料的熒光,通過(guò)熒光猝滅的程度實(shí)現(xiàn)抗生物素蛋白的檢測(cè),檢測(cè)范圍為0.5~370mol/L。
氨基修飾的上轉(zhuǎn)換納米顆粒不僅可以和蛋白偶聯(lián),還可以和DNA、小分子相連,將上轉(zhuǎn)換納
米顆粒結(jié)合磁場(chǎng)生物分離技術(shù)用于微量DNA的檢測(cè)。非常巧妙的利用Lemieux2vonRudloff試劑直接氧化合成過(guò)程中引入的油酸配體,得到羧基修飾的上轉(zhuǎn)換納米顆粒,用于定量檢測(cè)靶向DNA。將Fe3O4和NaYF4BYb,Er納米顆粒包覆在二氧化硅微球內(nèi),制備的發(fā)光磁性多功能復(fù)合納米顆粒,在生物分離、檢測(cè)、標(biāo)記成像及藥物輸送方面有著潛在的應(yīng)用價(jià)值。
2:稀土摻雜上轉(zhuǎn)換氟化物納米在免疫分析中的應(yīng)用
2001年,Niedbala課題組報(bào)道了上轉(zhuǎn)換納米顆粒應(yīng)用于免疫層析實(shí)驗(yàn)。研究者將上轉(zhuǎn)換材料同生物分子相連后,采用免疫層析技術(shù)對(duì)抗原進(jìn)行檢測(cè)取得了理想的結(jié)果。由于層析所用的底板在紅外光照射下不發(fā)光,所以觀測(cè)到的信號(hào)必然來(lái)自上轉(zhuǎn)換納米顆粒,因此上轉(zhuǎn)換納米材料用于免疫層析技術(shù)更加提高了這種方法的可靠性。400nm的UCNP與Cy5相比,目標(biāo)物濃度和發(fā)光強(qiáng)度的線性關(guān)系提高兩個(gè)數(shù)量級(jí)。此外,研究者將膠體金和上轉(zhuǎn)換納米顆粒同時(shí)應(yīng)用于HPV16的檢測(cè),結(jié)果表明UCNP實(shí)驗(yàn)的檢測(cè)限低于膠體金的100倍。但需要說(shuō)明的是,控制上轉(zhuǎn)換納米顆粒的尺寸是擴(kuò)展其在免疫層析技術(shù)應(yīng)用的關(guān)鍵因素。
3:稀土摻雜上轉(zhuǎn)換氟化物納米顆粒在生物標(biāo)記中的應(yīng)用
稀土上轉(zhuǎn)換氟化物納米顆粒在生物標(biāo)記中的應(yīng)用成為當(dāng)前納米標(biāo)記的熱點(diǎn)。最初的活體實(shí)驗(yàn)是用線蟲(chóng)吞噬稀土上轉(zhuǎn)換氧化物納米顆粒。制備了氨基修飾的摻雜FITC的上轉(zhuǎn)換二氧化硅納米顆粒,又將能與癌細(xì)胞特異性結(jié)合的葉酸共價(jià)鍵連接在納米顆粒外面。這種納米顆粒可以雙模式上轉(zhuǎn)換下轉(zhuǎn)換發(fā)光,同時(shí)實(shí)現(xiàn)對(duì)癌細(xì)胞的標(biāo)記,用于流式細(xì)胞儀進(jìn)行分選,將葉酸修飾到聚乙烯亞胺包覆的NaYF4BYb,Er納米顆粒上,進(jìn)行了一系列的細(xì)胞以及白鼠活體實(shí)驗(yàn)。研究表明此納米顆粒在磷酸鹽緩沖溶液中非常穩(wěn)定,同時(shí)對(duì)骨髓干細(xì)胞沒(méi)有毒性,抗漂白性好。將其應(yīng)用于人卵巢癌細(xì)胞和結(jié)腸癌細(xì)胞細(xì)胞標(biāo)記,修飾后的納米顆粒和細(xì)胞表面具有較高的親和力。小白鼠實(shí)驗(yàn)中,將UCNP和量子點(diǎn)同時(shí)應(yīng)用于皮下組織成像,在紫外光照射下腹部皮下組織的量子點(diǎn)沒(méi)有光信號(hào),而在980nm的激發(fā)下,可以清楚看到UCNP的發(fā)射光,證實(shí)了UCNP在生物活體標(biāo)記中的潛在價(jià)值。
4:稀土摻雜上轉(zhuǎn)換氟化物納米在光動(dòng)力治療中的應(yīng)用
第一次將稀土上轉(zhuǎn)換納米顆粒作為光敏劑的能量供體,包覆二氧化硅的同時(shí)摻雜部花青,實(shí)現(xiàn)UCNP和部花青的能量轉(zhuǎn)移產(chǎn)生單線態(tài)氧。將約50nm大小的共價(jià)連接葉酸、非共價(jià)吸附酞菁鋅的聚乙烯亞胺包覆的NaYF4BYb,Er納米顆粒,應(yīng)用于活體實(shí)驗(yàn)。酞箐鋅的吸收波長(zhǎng)和NaYF4:Yb,Er的670nm處的發(fā)射有重疊,發(fā)生能量轉(zhuǎn)移,當(dāng)用980nm的激發(fā)上轉(zhuǎn)換納米顆粒時(shí),光敏劑會(huì)產(chǎn)生單線態(tài)氧。將這種多功能的納米顆粒應(yīng)用于活體實(shí)驗(yàn),證明了此種納米顆粒不僅細(xì)胞毒性小,而且可以靶向識(shí)別癌細(xì)胞,并且可以有效的殺死腫瘤細(xì)胞,癌細(xì)胞殺死率高達(dá)80%。
西安瑞禧生物科技有限公司可以提供各種稀土材質(zhì)的上轉(zhuǎn)換發(fā)光納米顆粒UCNPS,我們可以提供脂溶性的油酸包裹的UCNPS,二氧化硅包裹的UCNPS,氨基修飾的二氧化硅包裹的UCNPS,PEG包裹的上轉(zhuǎn)換發(fā)光納米顆粒,PAA包裹的上轉(zhuǎn)換納米顆粒,介孔二氧化硅包裹上轉(zhuǎn)換納米顆粒,抗體蛋白多肽修飾上轉(zhuǎn)換納米顆粒定制。
產(chǎn)品列表:
【油酸包裹-脂溶性上轉(zhuǎn)換納米顆粒】:
6nm/30nm/400nm Upconversion Nanoparticles witholeic acid coating in toluene
Ex/Em:980nm-540/650nm
6nm/30nm/400nm Upconversion Nanoparticles witholeic acid coating in toluene
Ex/Em:980nm-360/450/470/800nm
35nm Upconversion Nanoparticles with oleicacid coating in toluene
Ex/Em:980nm/1060nm (近紅外)
Ex/Em:980nm/1165nm (近紅外)
Ex/Em:980nm/1310nm (近紅外)
Ex/Em:980nm/1460nm (近紅外)
Ex/Em:980nm/1530nm (近紅外)
40nm Upconversion Nanoparticles with oleicacid coating in toluene
Ex: 800/1532nm Em: 540/650/980nm (紅)
10nm Upconversion Nanoparticles with oleicacid coating in toluene Ex/Em:800nm/980nm
激發(fā)和發(fā)射波長(zhǎng):Ex:800nm Em: 980nm (近紅外)
10nm/35nm Upconversion Nanoparticles with oleicacid coating in toluene
激發(fā)和發(fā)射波長(zhǎng):Ex: 800nm Em: 540/650nm (綠色)
6nm/30nm Upconversion Nanoparticles with oleicacid coating in toluene
激發(fā)和發(fā)射波長(zhǎng):Ex: 800nm Em: 360/450/470/800nm ( 紫色)
35nm Upconversion Nanoparticles with oleicacid coating in toluene
Ex/Em:800nm/1060nm (近紅外)
Ex/Em:800nm/1165nm (近紅外)
Ex/Em:800nm/1310nm (近紅外)
Ex/Em:800nm/1460nm (近紅外)
Ex/Em:800nm/1530nm (近紅外)
【二氧化硅包裹-水溶性上轉(zhuǎn)換納米顆粒】:
6nm/30nm/400nm Upconversion Nanoparticles withsilica coating in water
Ex/Em:980nm-540/650nm
6nm/30nm/400nm Upconversion Nanoparticles withsilica coating in water
Ex/Em:980nm-360/450/470/800nm
35nm Upconversion Nanoparticles with silicacoating in water
Ex/Em:980nm/1060nm (近紅外)
Ex/Em:980nm/1165nm (近紅外)
Ex/Em:980nm/1310nm (近紅外)
Ex/Em:980nm/1460nm (近紅外)
Ex/Em:980nm/1530nm (近紅外)
40nm Upconversion Nanoparticles with silicacoating in water
Ex: 800/1532nm Em: 540/650/980nm (紅)
10nm Upconversion Nanoparticles with silicacoating in water
激發(fā)和發(fā)射波長(zhǎng):Ex:800nm Em: 980nm (近紅外)
10nm/35nm Upconversion Nanoparticles with silicacoating in water
激發(fā)和發(fā)射波長(zhǎng):Ex: 800nm Em: 540/650nm (綠色)
6nm/30nm Upconversion Nanoparticles with silicacoating in water
激發(fā)和發(fā)射波長(zhǎng):Ex: 800nm Em: 360/450/470/800nm ( 紫色)
35nm Upconversion Nanoparticles with silicacoating in water
Ex/Em:800nm/1060nm (近紅外)
Ex/Em:800nm/1165nm (近紅外)
Ex/Em:800nm/1310nm (近紅外)
Ex/Em:800nm/1460nm (近紅外)
Ex/Em:800nm/1530nm (近紅外)
【氨基修飾二氧化硅包裹-水溶性上轉(zhuǎn)換納米顆粒】:
6nm/30nm/400nm Upconversion Nanoparticles withsilica coating amine function in water
Ex/Em:980nm-540/650nm
6nm/30nm/400nm Upconversion Nanoparticles withsilica coating amine function in water
Ex/Em:980nm-360/450/470/800nm
35nm Upconversion Nanoparticles with silicacoating amine function in water
Ex/Em:980nm/1060nm (近紅外)
Ex/Em:980nm/1165nm (近紅外)
Ex/Em:980nm/1310nm (近紅外)
Ex/Em:980nm/1460nm (近紅外)
Ex/Em:980nm/1530nm (近紅外)
40nm Upconversion Nanoparticles with silicacoating amine function in water
Ex: 800/1532nm Em: 540/650/980nm (紅)
10nm Upconversion Nanoparticles with silicacoating amine function in water
激發(fā)和發(fā)射波長(zhǎng):Ex:800nm Em: 980nm (近紅外)
10nm/35nm Upconversion Nanoparticles with silicacoating amine function in water
激發(fā)和發(fā)射波長(zhǎng):Ex: 800nm Em: 540/650nm (綠色)
6nm/30nm Upconversion Nanoparticles with silicacoating amine function in water
激發(fā)和發(fā)射波長(zhǎng):Ex: 800nm Em: 360/450/470/800nm ( 紫色)
35nm Upconversion Nanoparticles with silicacoating amine function in water
Ex/Em:800nm/1060nm (近紅外)
Ex/Em:800nm/1165nm (近紅外)
Ex/Em:800nm/1310nm (近紅外)
Ex/Em:800nm/1460nm (近紅外)
Ex/Em:800nm/1530nm (近紅外)
【聚乙二醇包裹-水溶性上轉(zhuǎn)換納米顆粒】:
6nm/30nm/400nm Upconversion Nanoparticles withPEG coating in water
Ex/Em:980nm-540/650nm
6nm/30nm/400nm Upconversion Nanoparticles withPEG coating in water
Ex/Em:980nm-360/450/470/800nm
35nm Upconversion Nanoparticles with PEGcoating in water
Ex/Em:980nm/1060nm (近紅外)
Ex/Em:980nm/1165nm (近紅外)
Ex/Em:980nm/1310nm (近紅外)
Ex/Em:980nm/1460nm (近紅外)
Ex/Em:980nm/1530nm (近紅外)
40nm Upconversion Nanoparticles with PEGcoating in water
Ex: 800/1532nm Em: 540/650/980nm (紅)
10nm Upconversion Nanoparticles with PEGcoating in water
激發(fā)和發(fā)射波長(zhǎng):Ex:800nm Em: 980nm (近紅外)
10nm/35nm Upconversion Nanoparticles with PEGcoating in water
激發(fā)和發(fā)射波長(zhǎng):Ex: 800nm Em: 540/650nm (綠色)
6nm/30nm Upconversion Nanoparticles with PEGcoating in water
激發(fā)和發(fā)射波長(zhǎng):Ex: 800nm Em: 360/450/470/800nm ( 紫色)
35nm Upconversion Nanoparticles with PEGcoating in water
Ex/Em:800nm/1060nm (近紅外)
Ex/Em:800nm/1165nm (近紅外)
Ex/Em:800nm/1310nm (近紅外)
Ex/Em:800nm/1460nm (近紅外)
Ex/Em:800nm/1530nm (近紅外)
【聚丙烯酸包裹-水溶性上轉(zhuǎn)換納米顆粒】:
6nm/30nm/400nm Upconversion Nanoparticles withPAA coating in water
Ex/Em:980nm-540/650nm
6nm/30nm/400nm Upconversion Nanoparticles withPAA coating in water
Ex/Em:980nm-360/450/470/800nm
35nm Upconversion Nanoparticles with PAAcoating in water
Ex/Em:980nm/1060nm (近紅外)
Ex/Em:980nm/1165nm (近紅外)
Ex/Em:980nm/1310nm (近紅外)
Ex/Em:980nm/1460nm (近紅外)
Ex/Em:980nm/1530nm (近紅外)
40nm Upconversion Nanoparticles with PAAcoating in water
Ex: 800/1532nm Em: 540/650/980nm (紅)
10nm Upconversion Nanoparticles with PAAcoating in water
激發(fā)和發(fā)射波長(zhǎng):Ex:800nm Em: 980nm (近紅外)
10nm/35nm Upconversion Nanoparticles with PAAcoating in water
激發(fā)和發(fā)射波長(zhǎng):Ex: 800nm Em: 540/650nm (綠色)
6nm/30nm Upconversion Nanoparticles with PAAcoating in water
激發(fā)和發(fā)射波長(zhǎng):Ex: 800nm Em: 360/450/470/800nm ( 紫色)
35nm Upconversion Nanoparticles with PAAcoating in water
Ex/Em:800nm/1060nm (近紅外)
Ex/Em:800nm/1165nm (近紅外)
Ex/Em:800nm/1310nm (近紅外)
Ex/Em:800nm/1460nm (近紅外)
Ex/Em:800nm/1530nm (近紅外)
我們還可以提供如下:
1:介孔二氧化硅包裹上轉(zhuǎn)換納米顆粒Upconversion Nanoparticles
2:磷脂PEG活性基團(tuán)修飾上轉(zhuǎn)換納米顆粒Upconversion Nanoparticles
3:上轉(zhuǎn)換納米顆粒UpconversionNanoparticles修飾蛋白
4:上轉(zhuǎn)換納米顆粒UpconversionNanoparticles修飾多肽
5:上轉(zhuǎn)換納米顆粒UpconversionNanoparticles修飾抗體
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