[EN] COMPOUNDS AND METHODS FOR OPTICAL SENSING OF ELECTRICAL ACTIVITY IN BIOLOGICAL SYSTEMS<br/>[FR] COMPOSÉS ET PROCÉDÉS DE DÉTECTION OPTIQUE D'ACTIVITÉ ÉLECTRIQUE DANS DES SYSTÈMES BIOLOGIQUES
申请人:UNIV CONNECTICUT
公开号:WO2019140270A1
公开(公告)日:2019-07-18
Disclosed are tethered chromophore compositions comprising a membrane-spanning tether. The compounds can include covalently tethered fluorophore-quencher combinations useful for measuring action potentials and other fast electrical events in cells and tissues.
A toolbox for controlling the properties and functionalisation of hydrazone-based supramolecular hydrogels
作者:Jos M. Poolman、Chandan Maity、Job Boekhoven、Lars van der Mee、Vincent A. A. le Sage、G. J. Mirjam Groenewold、Sander I. van Kasteren、Frank Versluis、Jan H. van Esch、Rienk Eelkema
DOI:10.1039/c5tb01870f
日期:——
In situ multicomponent hydrogelator formation enables straightforward chemical functionalisation of supramolecular hydrogels.
在原位多组分水凝胶生成促进了超分子水凝胶的简便化学功能化。
A series of two-photon absorption pyridinium sulfonate inner salts targeting endoplasmic reticulum (ER), inducing cellular stress and mitochondria-mediated apoptosis in cancer cells
Molecular Tuning of Styryl Dyes Leads to Versatile and Efficient Plasma Membrane Probes for Cell and Tissue Imaging
作者:Mayeul Collot、Emmanuel Boutant、Kyong Tkhe Fam、Lydia Danglot、Andrey S. Klymchenko
DOI:10.1021/acs.bioconjchem.0c00023
日期:2020.3.18
The plasma membrane (PM) plays a major role in many biological processes; therefore, its proper fluorescence staining is required in bioimaging. Among the commercially available PM probes, styryl dye FM1-43 is one of the most widely used. In this work, we demonstrated that fine chemical modifications of FM1-43 can dramatically improve the PM staining. The newly developed probes, SP-468 and SQ-535, were found to display enhanced photophysical properties (reduced cross-talk, higher brightness, improved photostability) and, unlike FM1-43, provided excellent and immediate PM staining in 5 different mammalian cell types including neurons (primary culture and tissue imaging). Taking advantage of these features, we successfully used SP-468 in STED super resolution neuronal imaging. Additionally, we showed that the new probes displayed differences in their internalization pathways compared to their parent FM1-43. Finally, we showed that the new probes kept the ability to stain the PM of plant cells. Overall, this work presents new useful probes for PM imaging in cells and tissues and provides insights on the molecular design of new PM targeting molecules.
Enhancement of fluorescent properties of near-infrared dyes using clickable oligoglycerol dendrons
作者:Orit Redy-Keisar、Katharina Huth、Uwe Vogel、Bernd Lepenies、Peter H. Seeberger、Rainer Haag、Doron Shabat
DOI:10.1039/c5ob00299k
日期:——
imaging. Here, we demonstrate that oligoglycerol dendrons effectively enhance the fluorescence properties of an NIR dye by increasing the solubility in water and the prevention of aggregate formation. First- and second-generation oligoglycerol dendrons were conjugated to an NIR dye via a dipolar-cycloaddition (click) reaction. The two new dye conjugates exhibited enhanced NIR fluorescent emission and