Fluorescent nucleoside with a new heterocyclic betaine as the aglycone photochemical preparation and properties
作者:Bohdan Skalski、Jarogniew Bartoszewicz、Stefan Paszyc、Zofia Gdaniec、Ryszard W. Adamiak
DOI:10.1016/s0040-4020(01)81677-x
日期:——
y1] pyridinium chloride into a highlyfluorescent nucleoside, having a new heteroaromatic betaine as the aglycone, occurs when an aerated aqueous solution of the pyridinium salt is exposed to sunlight. The chemical deacetylation of the fluorescent nucleoside (named tri-0-acetyl-luminarosine) to parent riboside (luminarosine) and N-glycosidic bond cleavage to aglycone (luminarine) is also described
The invention provides methods and compositions for measuring ion concentration inside a cell by measuring fluorescence of a compound of the general formula (I). In particular embodiments, the measured ion is halide, particularly iodide, the cell contains a functional anion transport protein or channel, the method measures a change in fluorescence as a function of a predetermined condition such as the presence of a predetermined amount of a candidate modulator of ion transport in the cell (e.g. for drug screening) or the expression by the cell of a transgene (e.g. to assess the efficacy of gene therapy).