SU462467A1 - The method of obtaining labeled with tritium nucleoside-5-triophosphate - Google Patents

The method of obtaining labeled with tritium nucleoside-5-triophosphate

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Publication number
SU462467A1
SU462467A1 SU1949384A SU1949384A SU462467A1 SU 462467 A1 SU462467 A1 SU 462467A1 SU 1949384 A SU1949384 A SU 1949384A SU 1949384 A SU1949384 A SU 1949384A SU 462467 A1 SU462467 A1 SU 462467A1
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SU
USSR - Soviet Union
Prior art keywords
tritium
nucleoside
triophosphate
monophosphate
cytidine
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Application number
SU1949384A
Other languages
Russian (ru)
Inventor
О.В. Лавров
Н.С. Марченков
К.С. Михайлов
Н.Ф. Мясоедов
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Предприятие П/Я А-1758
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Application filed by Предприятие П/Я А-1758 filed Critical Предприятие П/Я А-1758
Priority to SU1949384A priority Critical patent/SU462467A1/en
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Publication of SU462467A1 publication Critical patent/SU462467A1/en

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(54) СПОСОБ ПОЛУЧЕНИЯ МЕЧЕННЫХ ТРИТИЕМ НУКЛЕОЗИД-5 -ТРИФОСФ АТОВ акции продукты десорбируют скатализатор 100 мл 10%-ноге водного пиридина и лабильный тритий замещают на водород путе трехкратного изотопного уравновешивани  с водой. Сухой остаток после отгонки последней порции воды раствор ют в 15 мл дистиллированной воды и нанос т на колонну , содержащую дауэкс 1x8 в формиатной форме {1,2х2О,О см). Колонну промывают 150 мл дистиллированной воды, при это выходит четкий пик цитидина-5(Т). Затем при элюации 15О мл 0,25 н.муравьиной кислоты выходит четкий пик цитидин-5-монофосфата-5 (Т). Далее выдел ют 5-бром-цитидин-5 -монофосфат-Т( G ), использу  дл  элюации 2, 2 н. муравьиную кислоту . 11итидин-5(Т) концентрируют в вакууме при 37°С. Цитидин-5-монофосфат-5(Т кднцентрируют с помощью активированного угл , в опыте получают 31тс цитидина -/т- .„-, л КЮРИ -51Т; с удельной активностью 7,4 ммоль 113 тс циТидин-5 -монофосфата-5(Т) с удельной активностью 5,86 - -ммоль 9 тс 5-бром-цитидин-5 -монофосфата-Т ( Q ) с удельной активностью 0,2 ммоль Полученный препарат цитидин-5 -монофосфата-5 (Т) фосфорилируют, использу  1,0 мл стандартного ферментного растворф до цитидин-5-трифосфата-5(Т). Продукты фосфорилировани  раздел ют ионообменной хроматографией на колонке (3,0x30 см) с ДЭАЭ-целлюлозой А-25 в бикарбонатной форме. Дл  элюации примен ют линейный градиент триэтиламмонийбикарбонатного буфера рН 8,6 (0,1-О,6 м).. Соответствующие фракции собирают, обессоливают при помощи сефадекса КМ-25 в H-форме и концентрируют в вакууме. Получают 86тпс цитидин-5-трифос та-5( Т) с удельной акн тивностью 4,12 ;1„°., . Теоретически, по формуле, удельна  активность препарата должна составить 4,7 ,2 ,. „..„. уд - теоретически достигаема  удельна  активность маркируемого соединени  в данных экспериментальных услови х , кюри/ммопь; Т - количество трити  в исходном газе, ммоль; Н - количество водорода в исход-i ном газе, ммоль; М - исходное количество 5-бромцитидин-5-монофосфата , ммоль; число атомов водорода в лабильных положени х молекулы 5-бромщ1тидин-5-монофосфата ; G - количество катализатора, мг. Полученный препарат цитиди№-5-трифос фата-5 (Т) хроматографически однороден и радиохимически чист. рмула изобретени Способ получени  меченных тритием нгук еозид-5 -трифосфатов обработкой адсорби- рованного на палладиевом катализаторе соответствующего бромпроизводного нуклеозид-5 -монофосфата газообразным тритием, ыделением меченного тритием нуклеозид5 -монофосфата и его биохимическим фос- орилированием, совмещенным с радиохими еской очисткой, отличающийс  ем, что, с целью повышени  удельной акивности и радиохимической чистоты целеого продукта, обработку бромпроизводного уклеозид-5 -монофосфата тритием провод т ри 50-150ОС.(54) METHOD FOR OBTAINING TRITIUM-SPREADED NUCLEOSIDE-5-TRIPHOSPH ATOV Stocks products desorb the catalysts 100 ml of 10% aqueous pyridine and labile tritium are replaced with hydrogen by triple isotopic equilibration with water. The dry residue after the distillation of the last portion of water is dissolved in 15 ml of distilled water and applied to a column containing Dowex 1x8 in the formate form (1.2x2O, O cm). The column is washed with 150 ml of distilled water, with a clear peak of cytidine-5 (T) leaving. Then, upon elution with 15O ml of 0.25 n of formic acid, there is a clear peak of cytidine-5-monophosphate-5 (T). Next, 5-bromo-cytidine-5-monophosphate-T (G) is isolated, using 2, 2N for elution. formic acid. 11itidin-5 (T) is concentrated in vacuo at 37 ° C. Cytidine-5-monophosphate-5 (Tcd is concentrated by means of activated carbon, in the experiment, 31ts cytidine - / t -. "-, l CURE-51T is obtained; with a specific activity of 7.4 mmol 113 ts cyTidin-5-monophosphate-5 ( T) with a specific activity of 5.86 - -mmol 9 mc of 5-bromo-cytidine-5 -monophosphate-T (Q) with a specific activity of 0.2 mmol. The resulting preparation cytidine-5 -monophosphate-5 (T) is phosphorylated using 1 , 0 ml of standard enzyme solution to cytidine-5-triphosphate-5 (T). The phosphorylation products are separated by ion-exchange column chromatography (3.0 x 30 cm) with DEAE A-25 cellulose into bicarbonate. For elution, a linear gradient of triethylammonium bicarbonate buffer pH 8.6 (0.1 O, 6 m) is used .. The appropriate fractions are collected, desalted using Sephadex KM-25 in the H form and concentrated in vacuo. -5-triphos-5 (T) with a specific activity of 4.12; 1 "°.,. Theoretically, by the formula, the specific activity of the drug should be 4.7, 2,." .. ". Beats - theoretically achievable specific activity of the labeled compound under these experimental conditions, curie / mmop; T is the amount of trit in the source gas, mmol; H - the amount of hydrogen in the source gas, mmol; M - the initial amount of 5-bromocytidine-5-monophosphate, mmol; the number of hydrogen atoms in the labile positions of the 5-bromo-tidin-5-monophosphate molecule; G is the amount of catalyst, mg. The resulting preparation, cytid # 5-triphosphate-5 (T), is chromatographically homogeneous and radiochemically pure. rmula invention process for the preparation of tritium-labeled 5-TIs nguk -trifosfatov adsorbed Rowan treatment over a palladium catalyst corresponding bromo derivative nukleozid5 monophosphate tritium gas, tritium labeled Highlighted nukleozid5 monophosphate and its biochemical phosphate orilirovaniem aligned with radiochemical purification eskoy, wherein it that, in order to increase the specific acidity and radiochemical purity of the whole product, the treatment of the bromo derivative 5-monosodium phosphate with tritium was carried out at 50-150 ° C.

SU1949384A 1973-07-13 1973-07-13 The method of obtaining labeled with tritium nucleoside-5-triophosphate SU462467A1 (en)

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Application Number Priority Date Filing Date Title
SU1949384A SU462467A1 (en) 1973-07-13 1973-07-13 The method of obtaining labeled with tritium nucleoside-5-triophosphate

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU1949384A SU462467A1 (en) 1973-07-13 1973-07-13 The method of obtaining labeled with tritium nucleoside-5-triophosphate

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2229718A (en) * 1989-03-22 1990-10-03 Inst Molekularnoi Genetik Preparing biologically active compounds labelled with a hydrogen isotope

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2229718A (en) * 1989-03-22 1990-10-03 Inst Molekularnoi Genetik Preparing biologically active compounds labelled with a hydrogen isotope
GB2229718B (en) * 1989-03-22 1993-01-06 Inst Molekularnoi Genetik Method for preparing hydrogen-isotape labelled biologically active organic compounds

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