Chromogenic conjugates for color-based detection of targets are described. The conjugates comprise a chromogenic moiety such as rhodamine, rhodol or fluorescein. The chromogenic moiety is linked to a peroxidase substrate. The chromogenic conjugates can be used in immunohistochemical analysis and in situ hybridization. The conjugates can be used to detect 1, 2, 3 or more targets in a sample by color.
Synthesis of rhodamine-labelled dieckol: its unique intracellular localization and potent anti-inflammatory activity
作者:Jong Hwan Kwak、Yanxia He、Byungkwon Yoon、Seyoung Koo、Zhigang Yang、Eun Ju Kang、Bong Ho Lee、Seung-Yun Han、Yung Choon Yoo、Kyung Bok Lee、Jong Seung Kim
DOI:10.1039/c4cc04270k
日期:——
Rhodamine-labelled dieckol (1) synthesized through a click reaction was found to be localized in the endoplasmic reticulum (ER) of RAW 264.7 cells. Anti-inflammatory activity of compound 1 was considerably greater than that of dieckol itself.
Effective and selective targeting of the αVβ3integrin subtype is of high relevance in cancer research for the development of therapeutic systems with improved efficacy and of diagnostic imaging probes. We report here a new class of highly selective, αVβ3‐targeted gold nanoparticles (AuNPs), which carry cyclic 4‐aminoproline‐RGD semipeptides (cAmpRGD) as the targeting moiety immobilized at low surface
High-depth fluorescence imaging using a two-photon FRET system for mitochondrial pH in live cells and tissues
作者:Min Jung Chang、Kyutae Kim、Kyun Seob Park、Ji Su Kang、Chang Su Lim、Hwan Myung Kim、Chulhun Kang、Min Hee Lee
DOI:10.1039/c8cc07934j
日期:——
We developed a fluorescent pH probe (1) capable of two-photon excitation and far-visible-emission based on FRET, composed of naphthalimide–piperazine–rhodamine. It exhibited a pH-dependent reversible and fast ratiometric fluorescence change in the rhodamine emission. Probe 1 was applied to image the pH perturbations of mitochondria in living cells and tissues.
Mild Bioconjugation Through the Oxidative Coupling of<i>ortho</i>-Aminophenols and Anilines with Ferricyanide
作者:Allie C. Obermeyer、John B. Jarman、Chawita Netirojjanakul、Kareem El Muslemany、Matthew B. Francis
DOI:10.1002/anie.201307386
日期:2014.1.20
Using a small‐molecule‐based screen, ferricyanide was identified as a mild and efficient oxidant for the coupling of anilines and o‐aminophenols on protein substrates. This reaction is compatible with thiols and 1,2‐diols, allowing its use in the creation of complex bioconjugates for use in biotechnology and materials applications.