|
ИСТИНА |
Войти в систему Регистрация |
ИПМех РАН |
||
Localisation of RNAs and proteins in nucleolar precursor bodies of early mouse embryosстатья Исследовательская статья
Статья опубликована в высокорейтинговом журнале
Информация о цитировании статьи получена из
Web of Science,
Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 3 октября 2019 г.
- Авторы: Lavrentyeva E., Shishova K., Kagarlitsky G., Zatsepina O.
- Журнал: Reproduction, Fertility and Development
- Том: 29
- Номер: 3
- Год издания: 2017
- Издательство: Commonwealth Scientific and Industrial Research Organization Publishing
- Местоположение издательства: Australia
- Первая страница: 509
- Последняя страница: 520
- DOI: 10.1071/RD15200
- Аннотация: Early embryos of all mammalian species contain morphologically distinct but transcriptionally silent nucleoli called the nucleolar precursor bodies (NPBs), which, unlike normal nucleoli, have been poorly studied at the biochemical level. To bridge this gap, here we examined the occurrence of RNA and proteins in early mouse embryos with two fluorochromes – an RNA-binding dye pyronin Y (PY) and the protein-binding dye fluorescein-50-isothiocyanate (FITC). The staining patterns of zygotic NPBs were then compared with those of nucleolus-like bodies (NLBs) in fully grown surrounded nucleolus (SN)-type oocytes, which are morphologically similar to NPBs. We show that both entities contain proteins, but unlike NLBs, NPBs are significantly impoverished for RNA. Detectable amounts of RNA appear on the NPB surface only after resumption of rDNA transcription and includes pre-rRNAs and 28S rRNA as evidenced by fluorescence in situ hybridisation with specific oligonucleotide probes. Immunocytochemical assays demonstrate that zygotic NPBs contain rRNA processing factors fibrillarin, nucleophosmin and nucleolin, while UBF (the RNA polymerase I transcription factor) and ribosomal proteins RPL26 and RPS10 are not detectable. Based on the results obtained and data in the contemporary literature, we suggest a scheme of NPB assembly and maturation to normal nucleoli that assumes utilisation of maternally derived nucleolar proteins but of nascent rRNAs.
- Добавил в систему: Зацепина Ольга Владимировна
Прикрепленные файлы
| № | Имя | Описание | Имя файла | Размер | Добавлен |
|---|---|---|---|---|---|
| 1. | Полный текст | Полный текст | Lavrentyeva_Reprod_Fert_Dev_2015_FINAL_x6k68f1.pdf | 966,2 КБ | 27 апреля 2020 [korsh] |
| 2. | Полный текст | Lavrentyeva_Reprod_Fert_Dev_2015_FINAL.pdf | 966,2 КБ | 30 сентября 2019 [zatsepina_olga] |