WEE1 kinase protects the stability of stalled DNA replication forks by limiting CDK2 activity
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WEE1 kinase protects the stability of stalled DNA replication forks by limiting CDK2 activity. / Elbæk, Camilla Reiter; Petrosius, Valdemaras; Benada, Jan; Erichsen, Louisa; Damgaard, Rune Busk; Sørensen, Claus Storgaard.
I: Cell Reports, Bind 38, Nr. 3, 110261, 2022.Publikation: Bidrag til tidsskrift › Tidsskriftartikel › Forskning › fagfællebedømt
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TY - JOUR
T1 - WEE1 kinase protects the stability of stalled DNA replication forks by limiting CDK2 activity
AU - Elbæk, Camilla Reiter
AU - Petrosius, Valdemaras
AU - Benada, Jan
AU - Erichsen, Louisa
AU - Damgaard, Rune Busk
AU - Sørensen, Claus Storgaard
N1 - Publisher Copyright: © 2021 The Author(s)
PY - 2022
Y1 - 2022
N2 - Cellular feedback systems ensure genome maintenance during DNA replication. When replication forks stall, newly replicated DNA is protected by pathways that limit excessive DNA nuclease attacks. Here we show that WEE1 activity guards against nascent DNA degradation at stalled forks. Furthermore, we identify WEE1-dependent suppression of cyclin-dependent kinase 2 (CDK2) as a major activity counteracting fork degradation. We establish DNA2 as the nuclease responsible for excessive fork degradation in WEE1-inhibited cells. In addition, WEE1 appears to be unique among CDK activity suppressors in S phase because neither CHK1 nor p21 promote fork protection as WEE1 does. Our results identify a key role of WEE1 in protecting stalled forks, which is separate from its established role in safeguarding DNA replication initiation. Our findings highlight how WEE1 inhibition evokes massive genome challenges during DNA replication, and this knowledge may improve therapeutic strategies to specifically eradicate cancer cells that frequently harbor elevated DNA replication stress.
AB - Cellular feedback systems ensure genome maintenance during DNA replication. When replication forks stall, newly replicated DNA is protected by pathways that limit excessive DNA nuclease attacks. Here we show that WEE1 activity guards against nascent DNA degradation at stalled forks. Furthermore, we identify WEE1-dependent suppression of cyclin-dependent kinase 2 (CDK2) as a major activity counteracting fork degradation. We establish DNA2 as the nuclease responsible for excessive fork degradation in WEE1-inhibited cells. In addition, WEE1 appears to be unique among CDK activity suppressors in S phase because neither CHK1 nor p21 promote fork protection as WEE1 does. Our results identify a key role of WEE1 in protecting stalled forks, which is separate from its established role in safeguarding DNA replication initiation. Our findings highlight how WEE1 inhibition evokes massive genome challenges during DNA replication, and this knowledge may improve therapeutic strategies to specifically eradicate cancer cells that frequently harbor elevated DNA replication stress.
KW - cancer
KW - CDK
KW - cell cycle
KW - DNA replication
KW - fork protection
KW - genome integrity
KW - nucleases
KW - replication stress
KW - WEE1
U2 - 10.1016/j.celrep.2021.110261
DO - 10.1016/j.celrep.2021.110261
M3 - Journal article
C2 - 35045293
AN - SCOPUS:85122937211
VL - 38
JO - Cell Reports
JF - Cell Reports
SN - 2211-1247
IS - 3
M1 - 110261
ER -
ID: 290596575