水溶性CY7標(biāo)記N-羥基琥珀酰亞胺酯Sulfo-Cyanine7 NHS ester 科研用
磺化Cy7水溶性極好,并且染料分子本身帶電荷,標(biāo)記到蛋白表面后不會引發(fā)疏水性蛋白聚集,提高熒光標(biāo)記產(chǎn)物的穩(wěn)定性?;腔疌y7-NHS也溶于甲醇,DMSO,DMF等有機溶劑,標(biāo)記反應(yīng)也可以在純有機溶劑中進(jìn)行。
Cy7染料是常用的近紅外熒光染料,常被用于小動物活體成像,染料能夠在深層組織產(chǎn)生信號,進(jìn)而可以進(jìn)行藥物分子示蹤。
此外由于其性質(zhì),Cy7避開了可見光區(qū),在生物組織中的穿透深度較大。水和血紅蛋白對700~900 nm的光吸收都很少,使得近紅外光可以穿透組織內(nèi)部多達(dá)15 cm。同時,這類染料還擁有紫外光區(qū)染料和同位素標(biāo)記無法具備的生物安全性。

Sulfo-Cyanine7 is an improved analog of Cy7? fluorophore with quantum yield improved by 20%, and higher photostability. This fluorescent dye is especially useful for NIR imaging.
Near infrared fluorescent imaging takes advantage of transparency of biological tissues at particular range of wavelengths. The method is non-destructive, and allows to monitor distribution of various labeled molecules in live organisms.
ICG-DBCO
Sulfo-CY3 NHS ester
Sulfo-CY3.5 NHS ester
CY5 NHS ester
CY3 COOH
ICG-Hydrazide
Sulfo-CY3 maleimide
CY7.5 COOH
Sulfo-CY5.5 NHS ester
CY7 NHS ester
Sulfo-CY5 NHS ester
Sulfo-CY3.5 COOH
Sulfo-CY3 COOH
CY5 amine
以上資料源自https://www.stargraydye.com/portal/goods/list/id/1.html
星戈瑞stargraydye(2022.2)