Preparation and characterization of phospholipid-conjugated indocyanine green as a near-infrared probe
摘要:
We have rationally designed and synthesized a novel near-infrared (NIR) photoactivating probe, designated by iDOPE, in which an indocyanine green (ICG) fluorophore is covalently conjugated with a phospholipid moiety, 1,2-dioleoyl-sn-glycero-3-phosphoethanolamine (DOPE), to incorporate into liposome bilayers. NIR irradiation showed that iDOPE retained the optical and fluorescence properties of ICG and demonstrated photoactivator characteristics: fluorescence emission at around 820 nm in a solvent, singlet oxygen production, and concentration-dependent heat generation. Additionally, iDOPE was incorporated into liposome bilayers and maintained stable liposomally formulated iDOPE (LP-iDOPE) over 1 week under physiological conditions. We also observed the tumor-specific biodistribution of LP-iDOPE of in vivo xenografts. These findings suggest that LP-iDOPE might be a promising tool for NIR optical imaging, photodynamic therapy, and photothermal therapy. (C) 2012 Elsevier Ltd. All rights reserved.
Disclosed is a near-infrared fluorescent imaging agent comprising an indocyanine-based fluorescent dye and a liposome. The near-infrared fluorescent imaging agent of the present invention demonstrates high fluorescence intensity and a long anchoring time in sentinel lymph nodes, thereby making it useful for detecting sentinel lymph nodes in sentinel lymph node navigation surgery. Also disclosed is an indocyanine green derivative that is particularly suitable for use in the near-infrared fluorescent imaging agent of the present invention.
[EN] EPSILON-POLY-L-LYSINE-BASED DRUG CONJUGATE, INTERMEDIATE THEREOF, AND APPLICATION THEREOF<br/>[FR] CONJUGUÉ DE MÉDICAMENT À BASE D'EPSILON-POLY-L-LYSINE, INTERMÉDIAIRE DE CELUI-CI, ET SON APPLICATION<br/>[ZH] 一种基于ε-聚-L-赖氨酸的药物偶联物、其中间体及其应用