ALT cancer cells are specifically sensitive to lysine acetyl transferase inhibition.

Autor:	Bakhos-Douaihy D; Laboratoire de Radiopathologie, CEA, Institut de Radiobiologie Cellulaire et Moléculaire, Fontenay-aux-Roses, France.; INSERM U1276, Fontenay-aux-Roses, France.; Université Paris-Diderot, U1276, Fontenay-aux-Roses, France.; Université Paris-Sud, U1276, Fontenay-aux-Roses, France., Desmaze C; Laboratoire de Radiopathologie, CEA, Institut de Radiobiologie Cellulaire et Moléculaire, Fontenay-aux-Roses, France.; INSERM U1276, Fontenay-aux-Roses, France.; Université Paris-Diderot, U1276, Fontenay-aux-Roses, France.; Université Paris-Sud, U1276, Fontenay-aux-Roses, France., Jeitany M; Laboratoire de Radiopathologie, CEA, Institut de Radiobiologie Cellulaire et Moléculaire, Fontenay-aux-Roses, France.; INSERM U1276, Fontenay-aux-Roses, France.; Université Paris-Diderot, U1276, Fontenay-aux-Roses, France.; Université Paris-Sud, U1276, Fontenay-aux-Roses, France., Gauthier LR; Laboratoire de Radiopathologie, CEA, Institut de Radiobiologie Cellulaire et Moléculaire, Fontenay-aux-Roses, France.; INSERM U1276, Fontenay-aux-Roses, France.; Université Paris-Diderot, U1276, Fontenay-aux-Roses, France.; Université Paris-Sud, U1276, Fontenay-aux-Roses, France., Biard D; CEA, Institut de Biologie François Jacob, SEPIA, Team Cellular Engineering and Human Syndromes, Université Paris-Saclay, F-92265 Fontenay-aux-Roses, France., Junier MP; Neuroscience Paris Seine-IBPS, CNRS UMR8246, Inserm U1130, Sorbonne Université, Paris, France., Chneiweiss H; Neuroscience Paris Seine-IBPS, CNRS UMR8246, Inserm U1130, Sorbonne Université, Paris, France., Boussin FD; Laboratoire de Radiopathologie, CEA, Institut de Radiobiologie Cellulaire et Moléculaire, Fontenay-aux-Roses, France.; INSERM U1276, Fontenay-aux-Roses, France.; Université Paris-Diderot, U1276, Fontenay-aux-Roses, France.; Université Paris-Sud, U1276, Fontenay-aux-Roses, France.
Jazyk:	angličtina
Zdroj:	Oncotarget [Oncotarget] 2019 Jan 22; Vol. 10 (7), pp. 773-784. Date of Electronic Publication: 2019 Jan 22 (Print Publication: 2019).
DOI:	10.18632/oncotarget.26616
Abstrakt:	Some cancer cells elongate their telomeres through the ALT (alternative lengthening of telomeres) pathway, which is based on homologous recombination for the addition of telomere repeats without telomerase activity. General control non-derepressible 5 (GCN5) and P300/CBP-associated factor (PCAF), two homologous lysine acetyltransferases, exert opposite effects on the ALT pathway, inhibiting or favoring it respectively. Here we show that ALT cells are particularly sensitive to the inhibition of acetyltransferases activities using Anacardic Acid (AA). AA treatment recapitulates the effect of PCAF knockdown on several ALT features, suggesting that AA decreased the ALT mechanism through the inhibition of lysine transferase activity of PCAF, but not that of GCN5. Furthermore, AA specifically sensitizes human ALT cells to radiation as compared to telomerase-positive cells suggesting that the inhibition of lysine acetyltransferases activity may be used to increase the radiotherapy efficiency against ALT cancers. Competing Interests: CONFLICTS OF INTEREST The authors declare that they have no conflicts of interest.
Databáze:	MEDLINE
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