2016
RNA-dependent disassembly of nuclear bodies
MUSINOVA, Yana R., Olga M. LISITSYNA, Dmitry SOROKIN, Eugene A. ARIFULIN, Tatiana A. SMIRNOVA et. al.Základní údaje
Originální název
RNA-dependent disassembly of nuclear bodies
Autoři
MUSINOVA, Yana R. (643 Rusko), Olga M. LISITSYNA (643 Rusko), Dmitry SOROKIN (643 Rusko, garant, domácí), Eugene A. ARIFULIN (643 Rusko), Tatiana A. SMIRNOVA (643 Rusko), Roman A. ZINOVKIN (643 Rusko), Daria M. POTASHNIKOVA (643 Rusko), Yegor S. VASSETZKY (643 Rusko) a Eugene V. SHEVAL (643 Rusko)
Vydání
Journal of Cell Science, The Company of Biologists Ltd. 2016, 0021-9533
Další údaje
Jazyk
angličtina
Typ výsledku
Článek v odborném periodiku
Obor
Genetika a molekulární biologie
Stát vydavatele
Velká Británie a Severní Irsko
Utajení
není předmětem státního či obchodního tajemství
Impakt faktor
Impact factor: 4.431
Kód RIV
RIV/00216224:14330/16:00087720
Organizační jednotka
Fakulta informatiky
UT WoS
000391103700008
Klíčová slova anglicky
Nuclear bodies; Nucleolus; Interphase prenucleolar body; pre-rRNA; B23; NPM1; Self-organization
Změněno: 27. 4. 2017 05:41, RNDr. Pavel Šmerk, Ph.D.
Anotace
V originále
Nuclear bodies are membraneless organelles that play important roles in genome functioning. A specific type of nuclear bodies known as interphase prenucleolar bodies (iPNBs) are formed in the nucleoplasm after hypotonic stress from partially disassembled nucleoli. iPNBs are then disassembled, and the nucleoli are reformed simultaneously. Here, we show that diffusion of B23 molecules (also known as nucleophosmin, NPM1) from iPNBs, but not fusion of iPNBs with the nucleoli, contributes to the transfer of B23 from iPNBs to the nucleoli. Maturation of pre-ribosomal RNAs (rRNAs) and the subsequent outflow of mature rRNAs from iPNBs led to the disassembly of iPNBs. We found that B23 transfer was dependent on the synthesis of pre-rRNA molecules in nucleoli; these pre-rRNA molecules interacted with B23 and led to its accumulation within nucleoli. The transfer of B23 between iPNBs and nucleoli was accomplished through a nucleoplasmic pool of B23, and increased nucleoplasmic B23 content retarded disassembly, whereas B23 depletion accelerated disassembly. Our results suggest that iPNB disassembly and nucleolus assembly might be coupled through RNA-dependent exchange of nucleolar proteins, creating a highly dynamic system with long-distance correlations between spatially distinct processes.
Návaznosti
GBP302/12/G157, projekt VaV |
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