CN Patent

CN109030429B — 一种可对活细胞内microRNA21进行原位成像的纳米放大自参比探针

Assigned to Nanjing University · Expires 2022-06-21 · 4y expired

What this patent protects

本发明涉及一种对活细胞内microRNA(miRNA)原位成像的纳米放大自参比探针及其制备方法。该探针是将核酸发卡修饰的上转换纳米粒子(UNP‑H1)和荧光分子修饰的发卡分子(H2‑F)通过脂质体包裹而成。当探针进入细胞后，UNP‑H1和H2‑F被释放，只有当H1与miRNA杂交后，H2可以取代miRNA而与UNP‑H1杂交，释放出的miRNA启动下一个循环以放大信号。在近红外光激发下，UNP的发射带1(EEB1)与F之间发生发光共振能量转移(LRET)。以UNP的发射带2(EEB2)通道为自参比，LRET与EEB2通道的发光强度比值(I LRET /I…

USPTO Abstract

本发明涉及一种对活细胞内microRNA(miRNA)原位成像的纳米放大自参比探针及其制备方法。该探针是将核酸发卡修饰的上转换纳米粒子(UNP‑H1)和荧光分子修饰的发卡分子(H2‑F)通过脂质体包裹而成。当探针进入细胞后，UNP‑H1和H2‑F被释放，只有当H1与miRNA杂交后，H2可以取代miRNA而与UNP‑H1杂交，释放出的miRNA启动下一个循环以放大信号。在近红外光激发下，UNP的发射带1(EEB1)与F之间发生发光共振能量转移(LRET)。以UNP的发射带2(EEB2)通道为自参比，LRET与EEB2通道的发光强度比值(I LRET /I EEB2 )可用于细胞内miRNA的相对定量。

Drugs covered by this patent

Patent Metadata

Patent number
CN109030429B
Jurisdiction
CN
Classification
—
Expires
2022-06-21
Drug substance claim
No
Drug product claim
No
Assignee
Nanjing University
Source
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