Dihydrotetramethylrosamine: a long wavelength, fluorogenic peroxidase substrate evaluated in vitro and in a model phagocyte.

Dihydrotetramethylrosamine: a long wavelength, fluorogenic peroxidase substrate evaluated in vitro and in a model phagocyte.
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二氢四甲基玫瑰胺:一种长波长荧光过氧化物酶底物,在体外和模型吞噬细胞中进行了评估。

DOI:
10.1016/0006-291x(91)91576-x
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发表时间:
1991
影响因子:
3.1
通讯作者:
Haugland,RP
Haugland,RP
中科院分区:
生物学4区
文献类型:
--
作者:
Whitaker,JE;Moore,PL;Haugland,RP;Haugland,RP

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对过氧化物酶的荧光底物二氢四甲基罗胺及其荧光氧化产物氯化四甲基罗胺进行了评价。底物是无色无荧光的,而被氧化的染料在550 nm处吸收,在574 nm处发射。体外测定表明,在过氧化氢的存在下,底物被辣根过氧化物酶氧化成荧光团。在活体摄取和氧化底物时,蛋白变形虫的特征是最初出现荧光吞噬空泡,随后定位在囊泡细胞器中,原生动物线粒体的大小和形状。在与底物、氧化的罗萨明或罗丹明123孵育的细胞中也出现了类似的染色模式,这是一种已知的线粒体染色。
Dihydrotetramethylrosamine, a fluorogenic substrate for peroxidase, and its fluorescent oxidation product, tetramethylrosamine chloride, were evaluated. The substrate is colorless and nonfluorescent while the oxidized dye absorbs at 550 nm and emits at 574 nm in both methanol and water.In vitroassays demonstrated that the substrate was oxidized to the fluorophore by horseradish peroxidase in the presence of hydrogen peroxide.In vivouptake and oxidation of the substrate byAmoeba proteuswas characterized by the initial appearance of fluorescent phagocytic vacuoles with subsequent localization in vesicular organelles the size and shape of protozoan mitochondria. Similar staining patterns occurred in cells incubated with substrate, oxidized rosamine or rhodamine 123, a known mitochondrial stain.
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发表时间: 1977-01-01
影响因子: 6.4
作者:
ENGVALL, E;RUOSLAHTI, E
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