References

vavilov

Вавиловский журнал генетики и селекции

Vavilov Journal of Genetics and Breeding

2500-3259

Institute of Cytology and Genetics of Siberian Branch of the RAS

10.18699/VJ18.358

vavilov-1771

Research Article

РЕПРОДУКТИВНЫЕ ТЕХНОЛОГИИ

PHYSIOLOGICAL GENETICS

Мутация yellow в локусе agouti устраняет возрастное повышение экспрессии генов белков, регулирующих окисление жирных кислот в мышцах у мышей

Mutation yellow in agouti loci prevents age-related increase of skeletal muscle genes regulating free fatty acids oxidation

Пискунова

Ю. В.

Piskunova

Y. V.

Новосибирск

Novosibirsk

j_mirsanova@mail.ru

Казанцева

А. Ю.

Kazantceva

A. Y.

Новосибирск

Novosibirsk

Бакланов

А. В.

Baklanov

A. V.

Новосибирск

Novosibirsk

Бажан

Н. М.

Bazhan

N. M.

Новосибирск

Novosibirsk

Новосибирский национальный исследовательский государственный университетРоссияNovosibirsk State UniversityRussian Federation

Федеральный исследовательский центр Институт цитологии и генетики Сибирского отделения Российской академии наукРоссияInstitute of Cytology and Genetics SB RASRussian Federation

Новосибирский национальный исследовательский государственный университет; Федеральный исследовательский центр Институт цитологии и генетики Сибирского отделения Российской академии наукРоссияNovosibirsk State University; Institute of Cytology and Genetics SB RASRussian Federation

2018

05122018

222265272

2018

Пискунова Ю.В., Казанцева А.Ю., Бакланов А.В., Бажан Н.М.

Piskunova Y.V., Kazantceva A.Y., Baklanov A.V., Bazhan N.M.

This work is licensed under a Creative Commons Attribution 4.0 License.

https://vavilov.elpub.ru/jour/article/view/1771

Мутация yellow в локусе agouti (Ay мутация), снижающая активность меланокортиновых рецепторов, с возрастом вызывает гиперфагию, ожирение и диабет второго типа у мышей (Ay мыши). Неизвестно, будут ли у Ay мышей изменения в отдельных звеньях метаболической системы (белый и бурый жир и мышцы) проявляться еще до развития ожирения. Цель работы – измерить у Ay мышей относительную экспрессию генов ключевых белков, регулирующих углеводно-жировой обмен в белом и буром жире и скелетной мускулатуре на этапах развития, предшествующих формированию ожирения. Исследовали мышей линии C57Bl/6J, несущих доминантную аутосомную мутацию Ay (Ay /a мыши), и мышей стандартного генотипа данной линии (a/a мыши, контроль) в трех возрастных группах: 10, 15 и 30 нед. Методом ПЦР в реальном времени измеряли относительный уровень мРНК генов в мышцах: uncoupling protein 3 (Ucp3) и carnitine palmitoyl transferase 1b (Cpt1b) (окисление СЖК), solute carrier family 2 (facilitated glucose transporter), member 4 (Slc2a4) (захват глюкозы); в белом жире: lipoprotein lipase (Lpl) (депонирование триглицеридов), hormone-sensitive lipase (Lipe) (мобилизация жиров) и Slc2a4 (захват глюкозы); в буром жире: uncoupling protein 1 (Ucp1) (расход энергии). В молодом возрасте (10 нед) у Ay мышей в мышцах была снижена экспрессия Cpt1b, в 15 нед у них отсутствовал транзиторный пик транскрипции Cpt1b, Ucp3 в мышцах, а также Lipe и Slc2a4 в белом жире, который отмечался у a/a мышей. Снижение транскрипционной активности исследованных генов в скелетных мышцах и белом жире может инициировать развитие меланокортинового ожирения у Ay мышей.

The lethal yellow mutation in agouti loci (Ay mutation) reduces the activity of melanocortin (MC) receptors and causes hyperphagia, obesity and type two diabetes mellitus in aging mice (Ay mice). It is unknown if changes in distinct elements of the metabolic system such as white adipose tissue (WAT) and brown adipose tissue (BAT), and skeletal muscle will manifest before the development of obesity. The aim of this work was to measure the relative gene expression of key proteins that regulate carbohydrate-lipid metabolism in WAT, BAT and skeletal muscle in Ay mice before the development of obesity. C57Bl/6J mice bearing a dominant autosomal mutation Ay (Ay /a mice) and mice of the standard genotype (a/a mice, control) have been studied in three age groups: 10, 15 and 30 weeks. The relative mRNA level of genes was measured by real-time PCR in skeletal muscles (uncoupling protein 3 (Ucp3) and carnitine palmitoyl transferase 1b (Cpt1b) (free fatty acids oxidation), solute carrier family 2 (facilitated glucose transporter), member 4 (Slc2a4) (glucose uptake)), in WAT lipoprotein lipase (Lpl) (triglyceride deposition), hormone-sensitive lipase (Lipe) (lipid mobilization), and Slc2a4 (glucose uptake)), and in BAT: uncoupling protein 1 (Ucp1) (energy expenditure). The expression of Cpt1b was reduced in young Ay mice (10 weeks), there was no transient peak of transcription of Cpt1b, Ucp3 in skeletal muscle tissue and Lipe, Slc2a4 in WAT in early adult Ay mice (15 weeks), which was noted in а/а mice. Reduction of the transcriptional activity of the studied genes in skeletal muscle and white adipose tissue can initiate the development of melanocortin obesity in Ay mice.

мыши линии C57Bl/6JПЦР в реальном временимеланокортиновое ожирениеуглеводно-жировой обмен

C57Bl/6J micereal-time PCRmelanocortin obesitycarbohydrate-lipid metabolism

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The authors declare that there are no conflicts of interest present.