Mild hyperthermia inhibits homologous recombination, induces BRCA2 degradation, and sensitizes cancer cells to poly (ADP-ribose) polymerase-1 inhibition

Defective homologous recombination (HR) DNA repair imposed by BRCA1 or BRCA2 deficiency sensitizes cells to poly (ADP-ribose) polymerase (PARP)-1 inhibition and is currently exploited in clinical treatment of HR-deficient tumors. Here we show that mild hyperthermia (41-42.5 °C) induces degradation o...

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Veröffentlicht in:Proceedings of the National Academy of Sciences - PNAS Jg. 108; H. 24; S. 9851
Hauptverfasser: Krawczyk, Przemek M, Eppink, Berina, Essers, Jeroen, Stap, Jan, Rodermond, Hans, Odijk, Hanny, Zelensky, Alex, van Bree, Chris, Stalpers, Lukas J, Buist, Marrije R, Soullié, Thomas, Rens, Joost, Verhagen, Hence J M, O'Connor, Mark J, Franken, Nicolaas A P, Ten Hagen, Timo L M, Kanaar, Roland, Aten, Jacob A
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Sprache:Englisch
Veröffentlicht: United States 14.06.2011
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Abstract Defective homologous recombination (HR) DNA repair imposed by BRCA1 or BRCA2 deficiency sensitizes cells to poly (ADP-ribose) polymerase (PARP)-1 inhibition and is currently exploited in clinical treatment of HR-deficient tumors. Here we show that mild hyperthermia (41-42.5 °C) induces degradation of BRCA2 and inhibits HR. We demonstrate that hyperthermia can be used to sensitize innately HR-proficient tumor cells to PARP-1 inhibitors and that this effect can be enhanced by heat shock protein inhibition. Our results, obtained from cell lines and in vivo tumor models, enable the design of unique therapeutic strategies involving localized on-demand induction of HR deficiency, an approach that we term induced synthetic lethality.
AbstractList Defective homologous recombination (HR) DNA repair imposed by BRCA1 or BRCA2 deficiency sensitizes cells to poly (ADP-ribose) polymerase (PARP)-1 inhibition and is currently exploited in clinical treatment of HR-deficient tumors. Here we show that mild hyperthermia (41-42.5 °C) induces degradation of BRCA2 and inhibits HR. We demonstrate that hyperthermia can be used to sensitize innately HR-proficient tumor cells to PARP-1 inhibitors and that this effect can be enhanced by heat shock protein inhibition. Our results, obtained from cell lines and in vivo tumor models, enable the design of unique therapeutic strategies involving localized on-demand induction of HR deficiency, an approach that we term induced synthetic lethality.
Defective homologous recombination (HR) DNA repair imposed by BRCA1 or BRCA2 deficiency sensitizes cells to poly (ADP-ribose) polymerase (PARP)-1 inhibition and is currently exploited in clinical treatment of HR-deficient tumors. Here we show that mild hyperthermia (41-42.5 °C) induces degradation of BRCA2 and inhibits HR. We demonstrate that hyperthermia can be used to sensitize innately HR-proficient tumor cells to PARP-1 inhibitors and that this effect can be enhanced by heat shock protein inhibition. Our results, obtained from cell lines and in vivo tumor models, enable the design of unique therapeutic strategies involving localized on-demand induction of HR deficiency, an approach that we term induced synthetic lethality.Defective homologous recombination (HR) DNA repair imposed by BRCA1 or BRCA2 deficiency sensitizes cells to poly (ADP-ribose) polymerase (PARP)-1 inhibition and is currently exploited in clinical treatment of HR-deficient tumors. Here we show that mild hyperthermia (41-42.5 °C) induces degradation of BRCA2 and inhibits HR. We demonstrate that hyperthermia can be used to sensitize innately HR-proficient tumor cells to PARP-1 inhibitors and that this effect can be enhanced by heat shock protein inhibition. Our results, obtained from cell lines and in vivo tumor models, enable the design of unique therapeutic strategies involving localized on-demand induction of HR deficiency, an approach that we term induced synthetic lethality.
Author Rens, Joost
Zelensky, Alex
Verhagen, Hence J M
Eppink, Berina
van Bree, Chris
Stalpers, Lukas J
Franken, Nicolaas A P
Ten Hagen, Timo L M
Krawczyk, Przemek M
Rodermond, Hans
Soullié, Thomas
Essers, Jeroen
Buist, Marrije R
O'Connor, Mark J
Kanaar, Roland
Odijk, Hanny
Stap, Jan
Aten, Jacob A
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  surname: Krawczyk
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  organization: Van Leeuwenhoek Centre for Advanced Microscopy-AMC, Department of Cell Biology and Histology, Academic Medical Center, University of Amsterdam, 1105 AZ Amsterdam, The Netherlands
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BackLink https://www.ncbi.nlm.nih.gov/pubmed/21555554$$D View this record in MEDLINE/PubMed
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Snippet Defective homologous recombination (HR) DNA repair imposed by BRCA1 or BRCA2 deficiency sensitizes cells to poly (ADP-ribose) polymerase (PARP)-1 inhibition...
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StartPage 9851
SubjectTerms Animals
Benzoquinones - pharmacology
BRCA2 Protein - genetics
BRCA2 Protein - metabolism
Cell Line
Cell Line, Tumor
Cells, Cultured
DNA Repair
DNA-Binding Proteins - genetics
DNA-Binding Proteins - metabolism
Embryonic Stem Cells - drug effects
Embryonic Stem Cells - metabolism
Embryonic Stem Cells - radiation effects
Female
HeLa Cells
Hot Temperature
Humans
Immunoblotting
Lactams, Macrocyclic - pharmacology
Mice
Mice, Nude
Neoplasms, Experimental - genetics
Neoplasms, Experimental - metabolism
Neoplasms, Experimental - pathology
Phthalazines - pharmacology
Piperazines - pharmacology
Poly(ADP-ribose) Polymerase Inhibitors
Poly(ADP-ribose) Polymerases - genetics
Poly(ADP-ribose) Polymerases - metabolism
Quinazolines - pharmacology
Rats
Recombination, Genetic - drug effects
Recombination, Genetic - genetics
Recombination, Genetic - radiation effects
RNA Interference
Transplantation, Heterologous
Tumor Burden - drug effects
Title Mild hyperthermia inhibits homologous recombination, induces BRCA2 degradation, and sensitizes cancer cells to poly (ADP-ribose) polymerase-1 inhibition
URI https://www.ncbi.nlm.nih.gov/pubmed/21555554
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Volume 108
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