J 2014

Coilin is rapidly recruited to UVA-induced DNA lesions and gamma-radiation affects localized movement of Cajal bodies

BÁRTOVÁ, Eva, Veronika FOLTÁNKOVÁ, Soňa LEGARTOVÁ, Petra SEHNALOVÁ, Dmitry SOROKIN et. al.

Basic information

Original name

Coilin is rapidly recruited to UVA-induced DNA lesions and gamma-radiation affects localized movement of Cajal bodies

Authors

BÁRTOVÁ, Eva (203 Czech Republic), Veronika FOLTÁNKOVÁ (203 Czech Republic), Soňa LEGARTOVÁ (703 Slovakia), Petra SEHNALOVÁ (203 Czech Republic), Dmitry SOROKIN (643 Russian Federation, guarantor, belonging to the institution), Jana SUCHÁNKOVÁ (203 Czech Republic) and Stanislav KOZUBEK (203 Czech Republic)

Edition

Nucleus, Landes Bioscience, 2014, 1949-1034

Other information

Language

English

Type of outcome

Článek v odborném periodiku

Field of Study

Genetics and molecular biology

Country of publisher

United States of America

Confidentiality degree

není předmětem státního či obchodního tajemství

Impact factor

Impact factor: 3.033

RIV identification code

RIV/00216224:14330/14:00073626

Organization unit

Faculty of Informatics

UT WoS

000341641600009

Keywords in English

DNA repair; chromatin; nucleus; nucleolus; Cajal bodies; coilin

Tags

Změněno: 27/4/2015 03:55, RNDr. Pavel Šmerk, Ph.D.

Abstract

V originále

Cajal bodies are important nuclear structures containing proteins that preferentially regulate RNA-related metabolism. We investigated the cell-type specific nuclear distribution of Cajal bodies and the level of coilin, a protein of Cajal bodies, in non-irradiated and irradiated human tumor cell lines and embryonic stem (ES) cells. Cajal bodies were localized in different nuclear compartments, including DAPI-poor regions, in the proximity of chromocenters, and adjacent to nucleoli. The number of Cajal bodies per nucleus was cell cycle-dependent, with higher numbers occurring during G2 phase. Human ES cells contained a high coilin level in the nucleoplasm, but coilin-positive Cajal bodies were also identified in nuclei of mouse and human ES cells. Coilin, but not SMN, recognized UVA-induced DNA lesions, which was cell cycle-independent. Treatment with gamma-radiation reduced the localized movement of Cajal bodies in many cell types and GFP-coilin fluorescence recovery after photobleaching was very fast in nucleoplasm in comparison with GFP-coilin recovery in DNA lesions. By contrast, nucleolus-localized coilin displayed very slow fluorescence recovery after photobleaching, which indicates very slow rates of protein diffusion, especially in mouse ES cell nucleoli.

Links

CZ.1.07/2.3.00/30.0030, interní kód MU
Name: Rozvoj lidských zdrojů pro oblast buněčné biologie
Investor: Ministry of Education, Youth and Sports of the CR, 2.3 Human resources in research and development
GBP302/12/G157, research and development project
Name: Dynamika a organizace chromosomů během buněčného cyklu a při diferenciaci v normě a patologii
Investor: Czech Science Foundation