Ukr.Biochem.J. 2017; Том 89, № 5, вересень-жовтень, c. 52-61

doi: https://doi.org/10.15407/ubj89.05.052

Експресія генів, специфічних до убіквітину пептидаз та ATG7, у клітинах гліоми лінії U87 за дефіциту глутаміну

09.11.2017   Без категорії   No comments

О. В. Галкін1, Д. O. Мінченко1,2, О. О. Рябовол1,
В. В. Теличко1, О. О. Ратушна1, O. Г. Мінченко1

1Інститут біохімії ім. О. В. Палладіна НАН України, Київ;
e-mail: ominchenko@yahoo.com;
2Національний медичний університет ім. О. О. Богомольця, Київ, Україна

Вивчали вплив дефіциту глутаміну на експресію генів, що кодують специфічні до убіквітину пептидази (USP) та ензим E1, який активує убіквітин (GSA7) і відомий ще як про­теїн 7 (ATG7), у клітинах гліоми лінії U87 за умов пригнічення IRE1 (inositol requiring enzyme-1). Показано, що в контрольних (трансфікованих пустим вектором) клітинах гліоми за дефіциту глутаміну знижувалась експресія мРНК USP1 та ATG7 і підвищувалась мРНК USP25. У той самий час дефіцит глутаміну істотно не змінював експресію генів USP4, USP10, USP14 та USP22 в цих клітинах. Пригнічення функції сигнального ензиму IRE1 у клітинах гліоми лінії U87 посилювало ефект дефіциту глутаміну на експресію гена USP1 та індукувало чутливість експресії генів USP4 і USP14 до цих умов. Таким чином, дефіцит глутаміну геноспецифічно змінює рівень експресії більшості досліджених генів залежно від функціональної активності ензиму IRE1, центрального медіатора стресу ендоплазматичного ретикулума, який контролює процеси проліферації та росту пухлин.

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Посилання:

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