10-10-2019 дата публикации
Номер: US20190309341A1
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 2. The method according to claim 1 , wherein:{'sub': 1', '2', '3', '4', '5', '6', '7', '8', '9', '10', '11', '12', '13, 'a) each R, R, R, R, R, R, R, R, R, R, R, Rand Ris independently H, halogen, or alkyl;'}{'sub': 1', '2', '3', '4', '5', '6', '7', '8', '9', '10', '11', '12', '13, 'b) each R, R, R, R, R, R, R, R, R, R, R, Rand Ris independently H, alkyl, or substituted alkyl;'}{'sub': 1', '2', '3', '4', '5', '6', '7', '8', '9', '10', '11', '12', '13, 'c) each R, R, R, R, R, R, R, R, R, R, R, Rand Ris independently H or alkyl;'}{'sub': 1', '2', '3', '4', '5', '6', '7', '8', '9', '10', '11', '12', '13, 'd) at least one, two, three, four, five, six, seven, eight, nine, ten, eleven, or twelve of R, R, R, R, R, R, R, R, R, R, R, Rand Rare H; or'}{'sub': 1', '2', '3', '4', '5', '6', '7', '8', '9', '10', '11', '12', '13, 'e) each R, R, R, R, R, R, R, R, R, R, R, Rand Ris H.'}3. The method according to any one of - claim 1 , wherein:a) X is —N(R)— wherein R is H, halogen, alkyl, or substituted alkyl;b) X is —N(R)— wherein R is alkyl or substituted alkyl;c) X is —N(R)— wherein R is alkyl;d) X is —N(R)— wherein R is methyl, ethyl, propyl, or isopropyl;e) X is —N(R)— wherein R is methyl or ethyl; or{'sub': '3', 'f) X is —N(CH)—.'}4. The method according to any one of - claim 1 , wherein:a) Y is alkyl;b) Y is methyl, ethyl, propyl, or isopropyl;c) Y is methyl or ...
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