Tools for visualization of phosphoinositides in the cell nucleus

0472618 - ÚMG 2017 RIV DE eng J - Článek v odborném periodiku
Kalasová, Ilona - Fáberová, Veronika - Kalendová, Alžběta - Uličná, Lívia - Yildirim, Sukriye - Venit, Tomáš - Hozák, Pavel
Tools for visualization of phosphoinositides in the cell nucleus.
Histochemistry and Cell Biology. Roč. 145, č. 4 (2016), s. 485-496. ISSN 0948-6143. E-ISSN 1432-119X
Grant CEP: GA ČR GA16-03403S; GA ČR GAP305/11/2232; GA MŠMT(CZ) ED1.1.00/02.0109; GA CR GA16-03403S
Grant ostatní: Human Frontier Science Program(FR) RGP0017/2013
Institucionální podpora: RVO:68378050
Klíčová slova: Nucleus * Phosphoinositides * PI(4,5)P2 * PI(4)P
Kód oboru RIV: EB - Genetika a molekulární biologie
Impakt faktor: 2.553, rok: 2016

Phosphoinositides (PIs) are glycerol-based phospholipids containing hydrophilic inositol ring. The inositol ring is mono-, bis-, or tris-phosphorylated yielding seven PIs members. Ample evidence shows that PIs localize both to the cytoplasm and to the nucleus. However, tools for direct visualization of nuclear PIs are limited and many studies thus employ indirect approaches, such as staining of their metabolic enzymes. Since localization and mobility of PIs differ from their metabolic enzymes, these approaches may result in incomplete data. In this paper, we tested commercially available PIs antibodies by light microscopy on fixed cells, tested their specificity using protein-lipid overlay assay and blocking assay, and compared their staining patterns. Additionally, we prepared recombinant PIs-binding domains and tested them on both fixed and live cells by light microscopy. The results provide a useful overview of usability of the tools tested and stress that the selection of adequate tools is critical. Knowing the localization of individual PIs in various functional compartments should enable us to better understand the roles of PIs in the cell nucleus.
Trvalý link: http://hdl.handle.net/11104/0269875