Abstract:
Water-soluble, conjugated polymers containing one or more dibenzosilole monomer residues, as well as compositions, kits, and methods of making and using such polymers are disclosed. Also disclosed are dibenzosilole derivatives substituted with one or more water-solubilizing groups, and methods of making and using such derivatives to prepare water-soluble dibenzosilole polymers.
Abstract:
Alkynyl-derivatized cap analogs, alkynyl-modified capped RNA, 1,4-disubstituted triazole-derivatized capped RNA, methods of preparation, methods of isolation, and uses thereof are provided. The “click” modification facilitates detection and isolation of capped RNAs and the 1,4-disubstituted triazole derivatives formed by the “click” reaction are useful for producing RNA transcripts and encoded protein.
Abstract:
The present invention provides methods and fluorescent compounds that facilitate detecting and labeling of a fusion protein by being capable of selectively binding to an affinity tag. The fluorescent compounds have the general formula A(B)n, wherein A is a fluorophore, B is a binding domain that is a charged chemical moiety, a protein or fragment thereof and n is an integer from 1-6 with the proviso that the protein or fragment thereof not be an antibody or generated from an antibody. The present invention provides specific fluorescent compounds and methods used to detect and label fusion proteins that contain a poly-histidine affinity tag. These compounds have the general formula A(L)m(B)n wherein A is a fluorophore, L is a linker, B is an acetic acid binding domain, m is an integer from 1 to 4 and n is an integer from 1 to 6. The acetic acid groups interact directly with the positively charged histidine residues of the affinity tag to effectively label and detect a fusion protein containing such an affinity tag when present in an acidic or neutral environment.
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:
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:
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:
Compositions and methods for detecting the activity of an ion channel in a cell are described. The methods include providing a loading buffer solution to the cell, where the loading buffer includes a thallium ion indicator and optionally chloride ions, and providing a stimulus buffer that includes thallium ions to the cell. Providing the stimulus buffer can cause thallium ion influx into or efflux out of the cell through the ion channel. After providing the stimulus buffer, a change in at least one optical property of the thallium ion indicator is detected in response to thallium influx or efflux, thereby detecting the activity of the ion channel.
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:
Disclosed herein are compounds, compositions, methods and kits for detecting pH in samples using pH-sensitive fluorescent dyes. The compounds disclosed herein are novel xanthene-derivative dyes comprising an aniline moiety with one or more electron donating groups, which dyes are for detecting pH in samples either in vitro or in vivo. Also described herein are processes for preparing said dyes for use in the disclosed compositions, methods and kits.
Abstract:
Fluorescent quinolizinocoumarin compounds substituted with electrophilic reactive groups that bind thiol compounds are described. The compounds are useful in detecting oxidative stress and processes associated therewith in live cells.