Abstract:
PURPOSE: A two-photon fluorescent probe is provided to show strong two-photon fluorescence by being selectively dyed in a tissue and by a reaction with nitric oxide and to selectively detect nitric oxide, thereby imaging the distribution and the activity of nitric oxide with high definition. CONSTITUTION: A two-photon fluorescent probe for imaging nitric oxide is selected among compounds of chemical formulas 1-4. A method for preparing the two-photon fluorescent probe of chemical formula 1 comprises the steps of: treating a reacted mixture of a compound of chemical formula 5 and 2-nitro-p-phenylenediamine with a promoting agent under a nitrogen atmosphere to generate an amide compound; and reducing a nitro group in the amide compound. A method for imaging nitric oxide in tissues or cells comprises the steps of: injecting the two-proton fluorescent probe into cells; generating fluorescence by a reaction of the two-photon fluorescent probe with nitric oxide in the tissues or the cells; and observing the fluorescence through a two-photon microscope.
Abstract:
PURPOSE: A method for making an image of sodium/calcium activity using two-proton fluorescent probe is provided to selectively and easily load a complex together with an calcium ion. CONSTITUTION: A two-proton fluorescent probe is denoted by chemical formula 1. In chemical formula 1, X is O, S or NH. The probe forms a complex by reacting with calcium ions and contains a compound of chemical formula 1. A method for preparing the probe comprises: a step of refluxing a mixture of 6-bromo-N-methyl-2-naphthylamine, proton-sponge, and tert-butyl bromoacetate to prepare compound B of chemical formula 2; a step of stirring a mixture of the compound B, benzoxazole, Pd(II)OAc, PPh3, CuI, and CsCO_3 to prepare compound A of chemical formula 3; and a step of mixing the compound A, 1-hydroxybenzotriazole, and compound D of chemical formula 4.
Abstract:
본발명은이광자형광프로브에관한것으로서하기화학식 1 내지 4 중어느하나로표시되는이광자형광프로브를특징으로하며, 본발명에따른이광자형광프로브는물에대한용해도가높고, 독성이없으며, 광안정성이우수하므로, 생체내에서베타-갈락토시다아제의활성을효과적으로측정할수 있다. 또한, 종래베타-갈락토시다아제의활성을측정하던염색방법에비해특이성및 발광강도가현저히우수할뿐만아니라, 생체내에서영상화능력이우수하므로노화단계를진단하거나, 노화된세포를검출하는등의질병진단, 진단시약및 치료제개발과같은의학분야에사용할수 있다.