# name
Regulation of Claspin by the p38 stress-activated protein kinase protects cells from DNA damage

# metadata.dc.description.abstract[].value
Stress-activated protein kinases (SAPKs) enhance survival in response to environmental changes. In yeast, the Hog1 SAPK and Mrc1, a protein required for DNA replication, define a safeguard mechanism that allows eukaryotic cells to prevent genomic instability upon stress during S-phase. Here we show that, in mammals, the p38 SAPK and Claspin-the functional homolog of Mrc1-protect cells from DNA damage upon osmostress during S-phase. We demonstrate that p38 phosphorylates Claspin and either the mutation of the p38-phosphorylation sites in Claspin or p38 inhibition suppresses the protective role of Claspin on DNA damage. In addition, wild-type Claspin but not the p38-unphosphorylatable mutant has a protective effect on cell survival in response to cisplatin treatment. These findings reveal a role of Claspin in response to chemotherapeutic drugs. Thus, this pathway protects S-phase integrity from different insults and it is conserved from yeast to mammals.

# metadata.dc.rights[].value
cc-by-nc-nd (c) Ulsamer, Arnau et al., 2022

# metadata.dc.source[].value
Articles publicats en revistes (Institut de Recerca Biomèdica (IRB Barcelona))

# metadata.dc.title[].value
Regulation of Claspin by the p38 stress-activated protein kinase protects cells from DNA damage