PLK1 regulates the PrimPol damage tolerance pathway during the cell cycle
Identifikátory výsledku
Kód výsledku v IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14310%2F21%3A00123896" target="_blank" >RIV/00216224:14310/21:00123896 - isvavai.cz</a>
Výsledek na webu
<a href="https://www.science.org/doi/10.1126/sciadv.abh1004" target="_blank" >https://www.science.org/doi/10.1126/sciadv.abh1004</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1126/sciadv.abh1004" target="_blank" >10.1126/sciadv.abh1004</a>
Alternativní jazyky
Jazyk výsledku
angličtina
Název v původním jazyce
PLK1 regulates the PrimPol damage tolerance pathway during the cell cycle
Popis výsledku v původním jazyce
Replication stress and DNA damage stall replication forks and impede genome synthesis. During S phase, damage tolerance pathways allow lesion bypass to ensure efficient genome duplication. One such pathway is repriming, mediated by Primase-Polymerase (PrimPol) in human cells. However, the mechanisms by which PrimPol is regulated are poorly understood. Here, we demonstrate that PrimPol is phosphorylated by Polo-like kinase 1 (PLK1) at a conserved residue between PrimPol's RPA binding motifs. This phosphorylation is differentially modified throughout the cell cycle, which prevents aberrant recruitment of PrimPol to chromatin. Phosphorylation can also be delayed and reversed in response to replication stress. The absence of PLK1-dependent regulation of PrimPol induces phenotypes including chromosome breaks, micronuclei, and decreased survival after treatment with camptothecin, olaparib, and UV-C. Together, these findings establish that deregulated repriming leads to genomic instability, highlighting the importance of regulating this damage tolerance pathway following fork stalling and throughout the cell cycle.
Název v anglickém jazyce
PLK1 regulates the PrimPol damage tolerance pathway during the cell cycle
Popis výsledku anglicky
Replication stress and DNA damage stall replication forks and impede genome synthesis. During S phase, damage tolerance pathways allow lesion bypass to ensure efficient genome duplication. One such pathway is repriming, mediated by Primase-Polymerase (PrimPol) in human cells. However, the mechanisms by which PrimPol is regulated are poorly understood. Here, we demonstrate that PrimPol is phosphorylated by Polo-like kinase 1 (PLK1) at a conserved residue between PrimPol's RPA binding motifs. This phosphorylation is differentially modified throughout the cell cycle, which prevents aberrant recruitment of PrimPol to chromatin. Phosphorylation can also be delayed and reversed in response to replication stress. The absence of PLK1-dependent regulation of PrimPol induces phenotypes including chromosome breaks, micronuclei, and decreased survival after treatment with camptothecin, olaparib, and UV-C. Together, these findings establish that deregulated repriming leads to genomic instability, highlighting the importance of regulating this damage tolerance pathway following fork stalling and throughout the cell cycle.
Klasifikace
Druh
J<sub>imp</sub> - Článek v periodiku v databázi Web of Science
CEP obor
—
OECD FORD obor
10603 - Genetics and heredity (medical genetics to be 3)
Návaznosti výsledku
Projekt
<a href="/cs/project/LM2018127" target="_blank" >LM2018127: Česká infrastruktura pro integrativní strukturní biologii</a><br>
Návaznosti
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Ostatní
Rok uplatnění
2021
Kód důvěrnosti údajů
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Údaje specifické pro druh výsledku
Název periodika
Science Advances
ISSN
2375-2548
e-ISSN
—
Svazek periodika
7
Číslo periodika v rámci svazku
49
Stát vydavatele periodika
US - Spojené státy americké
Počet stran výsledku
15
Strana od-do
1-15
Kód UT WoS článku
000730595900005
EID výsledku v databázi Scopus
2-s2.0-85120666993