Covalent DNA-protein crosslinks (DPCs) are pervasive DNA lesions that interfere with essential chromatin processes such as transcription or replication. This review strives to provide an overview of the sources and principles of cellular DPC formation. DPCs are caused by endogenous reactive metabolites and various chemotherapeutic agents. However, in certain conditions DPCs also arise physiologically in cells. We discuss the cellular mechanisms resolving these threats to genomic integrity. Detection and repair of DPCs require not only the action of canonical DNA repair pathways but also the activity of specialized proteolytic enzymes-including proteases of the SPRTN/Wss1 family-to degrade the crosslinked protein. Loss of DPC repair capacity has dramatic consequences, ranging from genome instability in yeast and worms to cancer predisposition and premature aging in mice and humans.
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Hiroshima Univ, Grad Sch Sci, Dept Math & Life Sci, Higashihiroshima 7398526, JapanHiroshima Univ, Grad Sch Sci, Dept Math & Life Sci, Higashihiroshima 7398526, Japan
Ide, Hiroshi
Shoulkamy, Mahmoud I.
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Hiroshima Univ, Grad Sch Sci, Dept Math & Life Sci, Higashihiroshima 7398526, JapanHiroshima Univ, Grad Sch Sci, Dept Math & Life Sci, Higashihiroshima 7398526, Japan
Shoulkamy, Mahmoud I.
Nakano, Toshiaki
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Hiroshima Univ, Grad Sch Sci, Dept Math & Life Sci, Higashihiroshima 7398526, JapanHiroshima Univ, Grad Sch Sci, Dept Math & Life Sci, Higashihiroshima 7398526, Japan
Nakano, Toshiaki
Miyamoto-Matsubara, Mayumi
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Hiroshima Univ, Grad Sch Sci, Dept Math & Life Sci, Higashihiroshima 7398526, JapanHiroshima Univ, Grad Sch Sci, Dept Math & Life Sci, Higashihiroshima 7398526, Japan
Miyamoto-Matsubara, Mayumi
Salem, Amir M. H.
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Natl Res Ctr, Dept Pathol, Cairo 12622, EgyptHiroshima Univ, Grad Sch Sci, Dept Math & Life Sci, Higashihiroshima 7398526, Japan