[EN] COMPOSITIONS AND METHODS FOR TARGETED IMMUNOTHERAPY<br/>[FR] COMPOSITIONS ET PROCÉDÉS DESTINÉS À UNE IMMUNOTHÉRAPIE CIBLÉE
申请人:DANA FARBER CANCER INST INC
公开号:WO2019236522A1
公开(公告)日:2019-12-12
The present invention provides universal immunotherapy compositions useful for targeted treatment of cancers.
本发明提供了通用的免疫疗法组合物,可用于针对癌症的靶向治疗。
A Palette of Fluorescent Probes with Varying Emission Colors for Imaging Hydrogen Peroxide Signaling in Living Cells
作者:Bryan C. Dickinson、Calvin Huynh、Christopher J. Chang
DOI:10.1021/ja1014103
日期:2010.4.28
We present a new family of fluorescent probes with varying emission colors for selectively imaging hydrogen peroxide (H2O2) generated at physiological cell signaling levels. This structurally homologous series of fluorescein- and rhodol-based reporters relies on a chemospecific boronate-to-phenol switch to respond to H2O2 over a panel of biologically relevant reactive oxygen species (ROS) with tunable excitation and emission maxima and sensitivity to endogenously produced H2O2 signals, as shown by studies in RAW264.7 macrophages during the phagocytic respiratory burst and A431 cells in response to EGF stimulation. We further demonstrate the utility of these reagents in multicolor imaging experiments by using one of the new H2O2-specific probes, Peroxy Orange 1 (PO1), in conjunction with the green-fluorescent highly reactive oxygen species (hROS) probe, APF. This dual-probe approach allows for selective discrimination between changes in H2O2 and hypochlorous acid (HOCl) levels in live RAW264.7 macrophages. Moreover, when macrophages labeled with both PO1 and APF were stimulated to induce an immune response, we discovered three distinct types of phagosomes: those that generated mainly hROS, those that produced mainly H2O2, and those that possessed both types of ROS. The ability to monitor multiple ROS fluxes simultaneously using a palette of different colored fluorescent probes opens new opporunities to disentangle the complex contributions of oxidation biology to living systems by molecular imaging.
Photocatalysis Enables Visible‐Light Uncaging of Bioactive Molecules in Live Cells
of bioactivemolecules provides unique advantages due to the high temporal and spatial precision of light. The first visible‐lightuncaging reaction by photocatalytic deboronative hydroxylation in livecells is now demonstrated. Using Fluorescein and Rhodamine derivatives as photocatalysts and ascorbates as reductants, transient hydrogen peroxides were generated from molecular oxygen to uncage phenol