6533b838fe1ef96bd12a4632
RESEARCH PRODUCT
HDAC1 and HDAC2 integrate the expression of p53 mutants in pancreatic cancer.
Mandy BeyerA KroemerPatrick WenzelGünter SchneiderGünter SchneiderMatthias WirthMaximilian ReichertMaximilian ReichertSiavosh MahboobiOliver H. KrämerPeter BrandZonera HassanDieter SaurDieter SaurRoland RadRoland RadRoland H. StauberN. StojanovicClaudia SchäferAndreas SellmerAlexander ArltRoland M Schmidsubject
0301 basic medicineCancer ResearchProteasome Endopeptidase ComplexMutantHistone Deacetylase 2Histone Deacetylase 1Biologymedicine.disease_causeMolecular oncologyProto-Oncogene Proteins c-myc03 medical and health sciencesMicePancreatic cancerGeneticsmedicineAnimalsHumansRNA MessengerPromoter Regions GeneticMolecular BiologyRegulation of gene expressionMice KnockoutMutationWild typeCancerProto-Oncogene Proteins c-mdm2medicine.diseaseGenes p53HDAC13. Good healthGene Expression Regulation NeoplasticHistone Deacetylase InhibitorsPancreatic NeoplasmsDisease Models Animal030104 developmental biologyMutationCancer researchdescription
Mutation of p53 is a frequent genetic lesion in pancreatic cancer being an unmet clinical challenge. Mutants of p53 have lost the tumour-suppressive functions of wild type p53. In addition, p53 mutants exert tumour-promoting functions, qualifying them as important therapeutic targets. Here, we show that the class I histone deacetylases HDAC1 and HDAC2 contribute to maintain the expression of p53 mutants in human and genetically defined murine pancreatic cancer cells. Our data reveal that the inhibition of these HDACs with small molecule HDAC inhibitors (HDACi), as well as the specific genetic elimination of HDAC1 and HDAC2, reduce the expression of mutant p53 mRNA and protein levels. We further show that HDAC1, HDAC2 and MYC directly bind to the TP53 gene and that MYC recruitment drops upon HDAC inhibitor treatment. Therefore, our results illustrate a previously unrecognized class I HDAC-dependent control of the TP53 gene and provide evidence for a contribution of MYC. A combined approach targeting HDAC1/HDAC2 and MYC may present a novel and molecularly defined strategy to target mutant p53 in pancreatic cancer.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2015-04-23 | Oncogene |