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dc.contributor.authorHuang, Rui
dc.contributor.authorLangdon, Simon P.
dc.contributor.authorTse, Matthew
dc.contributor.authorMullen, Peter
dc.contributor.authorUm, In Hwa
dc.contributor.authorFaratian, Dana
dc.contributor.authorHarrison, David James
dc.identifier.citationHuang , R , Langdon , S P , Tse , M , Mullen , P , Um , I H , Faratian , D & Harrison , D J 2015 , ' The role of HDAC2 in chromatin remodelling and response to chemotherapy in ovarian cancer ' , Oncotarget , vol. 7 , no. 4 , pp. 4695-4711 .
dc.identifier.otherPURE: 221604815
dc.identifier.otherPURE UUID: 6f363146-6be0-430b-a014-3f5e7d8144b5
dc.identifier.otherScopus: 84957991514
dc.identifier.otherORCID: /0000-0001-9041-9988/work/64034286
dc.identifier.otherWOS: 000369952400078
dc.descriptionThis study was supported by financial support from the University of Edinburgh/China Scholarship Council joint Scholarship Scheme. We are also grateful to support from the Scottish Funding Council.en
dc.description.abstractChromatin undergoes structural changes in response to extracellular and environmental signals. We observed changes in nuclear morphology in cancer tissue biopsied after chemotherapy and hypothesised that these DNA damage-induced changes are mediated by histone deacetylases (HDACs). Nuclear morphological changes in cell lines and a xenograft model (OV1002) weremeasured in response to platinum chemotherapy by image analysis of nuclear texture. HDAC2 expression increased in PEO1 cells treated with cisplatin at 24h, which was accompanied by increased expression of heterochromatin protein 1 (HP1). HDAC2 and HP1 expression were also increased after carboplatin treatment in the OV1002 carboplatin-sensitive xenograft model but notin the insensitive HOX424 model. Expression of DNA damage response pathways (pBRCA1, γH2AX, pATM, pATR) showed time-dependent changes after cisplatin treatment. HDAC2 knockdown by siRNA reduced HP1 expression, induced DNA double strand breaks (DSB) measured by γH2AX, and interfered with the activation of DNA damage responses induced by cisplatin. Furthermore, HDAC2depletion affected γH2AX foci formation, cell cycle distribution, and apoptosis triggered by cisplatin and was additive to the inhibitory effect of cisplatin in cell lines. By inhibiting HDAC2 expression, reversible alterations in chromatin patterns during cisplatin treatment were observed. These results demonstrate quantifiable alterations in nuclear morphology after chemotherapy and implicateHDAC2 in higher-order chromatin changes and cellular DNA damage responses in ovarian cancer cells in vitro and in vivo.
dc.rightsLicensed under a Creative Commons Attribution 3.0 Licenseen
dc.subjectOvarian canceren
dc.subjectDNA repairen
dc.subjectRC0254 Neoplasms. Tumors. Oncology (including Cancer)en
dc.subjectSDG 3 - Good Health and Well-beingen
dc.titleThe role of HDAC2 in chromatin remodelling and response to chemotherapy in ovarian canceren
dc.typeJournal articleen
dc.description.versionPublisher PDFen
dc.contributor.institutionUniversity of St Andrews. School of Medicineen
dc.description.statusPeer revieweden

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