Abstract: According to the present teachings, systems, compositions, kits and methods for protein melt analysis are provided that utilizing a dye that is a dipyrrometheneboron difluoride compound. In some embodiments, a method comprises preparing a sample by mixing at least one protein with a dye, and applying a controlled heating, while recording the fluorescence emission of the sample.

Abstract: This disclosure relates to the field of fluorescent dyes, and in particular, compositions and methods for increasing fluorescent signals and the reduction of fluorescent quenching.

Abstract: This disclosure relates to the field of fluorescent dyes, and in particular, compositions and methods for increasing fluorescent signals and the reduction of fluorescent quenching.

Abstract: A new class of pH sensitive fluorescent dyes and assays relating thereto are described. The dyes and assays are particularly suited for biological applications including phagocytosis and monitoring intracellular processes. The pH sensitive fluorescent dyes of the present invention include compounds of Formula I: wherein the variables are described throughout the application.

Abstract: This disclosure relates to the field of fluorescent dyes, and in particular, compositions and methods for increasing fluorescent signals and the reduction of fluorescent quenching.

Abstract: According to the present teachings, systems, compositions, kits and methods for protein melt analysis are provided that utilizing a dye that is a dipyrrometheneboron difluoride compound. In some embodiments, a method comprises preparing a sample by mixing at least one protein with a dye, and applying a controlled heating, while recording the fluorescence emission of the sample.

Abstract: Provided herein are compounds, compositions, kits, uses, and methods for assessing the viability of cells and/or quantifying the amount of live and dead cells in a mixture using differential stains. In some embodiments, the compounds are used in culture media or can function independently of fixation and/or permeabilization. In some embodiments, the compounds comprise a platinum atom. In some embodiments, the compounds comprise a nitrogen mustard moiety.

Abstract: The present invention relates to methods for detecting the activity of an ion channel in a cell. The methods comprise providing a loading buffer solution to a cell that has an ion channel. The loading buffer comprises at least one thallium indicator (e.g., an environmentally sensitive, luminescent dye) and a physiological concentration of chloride ions. The methods further comprise providing a stimulus buffer to the cell, wherein the stimulus buffer comprises thallium (e.g., thallium ions). Providing the stimulus buffer causes thallium influx into the cell through the ion channel. After providing the stimulus buffer, the luminescence (e.g., fluorescence) of the dye in the cell is detected. The luminescence of the dye can change in the presence or absence of thallium. The methods may be used to measure influx or efflux of thallium through an ion channel.

Abstract: Provided herein are compounds, compositions, kits, uses, and methods for assessing the viability of cells and/or quantifying the amount of live and dead cells in a mixture using differential stains. In some embodiments, the compounds are used in culture media or can function independently of fixation and/or permeabilization. In some embodiments, the compounds comprise a platinum atom. In some embodiments, the compounds comprise a nitrogen mustard moiety.

Abstract: Provided herein are compounds, compositions, kits, uses, and methods for assessing the viability of cells and/or quantifying the amount of live and dead cells in a mixture using differential stains. In some embodiments, the compounds are used in culture media or can function independently of fixation and/or permeabilization. In some embodiments, the compounds comprise a platinum atom. In some embodiments, the compounds comprise a nitrogen mustard moiety.

Abstract: Water-soluble, fluorescent particles and compositions, kits, and methods of making and using such particles are disclosed. Processes for preparing fluorescent particles and for controlling the size, polydispersity and optical properties of such particles also are provided.

Abstract: According to the present teachings, systems, compositions, kits and methods for protein melt analysis are provided that utilizing a dye that is a dipyrrometheneboron difluoride compound. In some embodiments, a method comprises preparing a sample by mixing at least one protein with a dye, and applying a controlled heating, while recording the fluorescence emission of the sample.

Abstract: Water-soluble, fluorescent particles and compositions, kits, and methods of making and using such particles are disclosed. Processes for preparing fluorescent particles and for controlling the size, polydispersity and optical properties of such particles also are provided.

Abstract: Described herein are compounds, methods, and kits for long-term tracking of cell proliferation, differentiation, and/or function. The compounds of the present invention are novel cell-tracking reagents, efficiently excitable with a 405-nm violet laser, that provide bright fluorescence intensity, uniform cell staining, and good retention within cells as well as low toxicity toward cells.

Abstract: Silicon-substituted rhodamine compounds are disclosed herein. Also described herein are SiR dyes comprising at least one vinyl group attached to the Si atom (10 position) of the SiR dye. Derivatives, functionalized versions, conjugates, kits, related synthetic methods and uses of SiR compounds also are provided. Silicon-rhodamine (SiR) dyes can provide bright fluorescence at far red wavelengths and exhibit good photostability. The compounds described herein can be useful for fluorescent labeling and detection of biological samples.

Abstract: Low-copper click chemistry, 1.3-dipolar cycloadditions, and Staudinger ligations for modifying biomolecules is provided. Compositions, methods, and kits relating to low-copper click chemistry, 1.3-dipolar cycloadditions, and Staudinger ligations are also provided.

Abstract: Provided herein are compounds, enzyme substrates, compositions, kits, uses, and methods for detecting the presence or absence of a caspase enzyme, measuring the activity of a caspase enzyme, or detecting the presence or absence of apoptosis. The detection or measurement can occur through intracellular cleavage of a compound or enzyme substrate, which can lead to an increase in fluorescence, e.g., in the violet or red channel, through liberation of a nucleic acid binding dye from a peptide, such as liberation of a DNA-binding dye from a negatively charged peptide comprising a sequence recognized and cleaved by a caspase.

Abstract: A new class of pH sensitive fluorescent dyes and assays relating thereto are described. The dyes and assays are particularly suited for biological applications including phagocytosis and monitoring intracellular processes. The pH sensitive fluorescent dyes of the present invention include compounds of Formula I: wherein the variables are described throughout the application.

Abstract: Described herein are fluorescent compounds and methods and comprising these compounds. The compounds disclosed herein are carbopyronine reagents that fluoresce in the red portion of the UV/VIS spectrum and provide bright fluorescence intensity, uniform cell staining, and good retention within live cells as well as low toxicity toward cells.

Abstract: A new class of pH sensitive fluorescent dyes and assays relating thereto are described. The dyes and assays are particularly suited for biological applications including phagocytosis and monitoring intracellular processes. The pH sensitive fluorescent dyes of the present invention include compounds of Formula I: wherein the variables are described throughout the application.