No evidence for PALB2 methylation in high-grade serous ovarian cancer

被引:9
作者
Mikeska, Thomas [1 ,2 ]
Alsop, Kathryn [3 ,4 ]
Mitchell, Gillian [5 ]
Bowtell, David D. L. [2 ,3 ,4 ,6 ]
Dobrovic, Alexander [1 ,2 ,6 ]
机构
[1] Peter MacCallum Canc Ctr, Dept Pathol, Mol Pathol Res & Dev Lab, East Melbourne, Vic, Australia
[2] Univ Melbourne, Dept Pathol, Parkville, Vic 3052, Australia
[3] Peter MacCallum Canc Ctr, East Melbourne, Vic, Australia
[4] Univ Melbourne, Dept Biochem & Mol Biol, Parkville, Vic 3052, Australia
[5] Peter MacCallum Canc Ctr, Familial Canc Ctr, East Melbourne, Vic, Australia
[6] Univ Melbourne, Sir Peter MacCallum Dept Oncol, Parkville, Vic 3052, Australia
基金
英国医学研究理事会;
关键词
DNA methylation; Ovarian cancer; Fanconi anaemia; PALB2; MS-HRM; DNA METHYLATION; BREAST; GENE; PATTERNS;
D O I
10.1186/1757-2215-6-26
中图分类号
Q [生物科学];
学科分类号
07 ; 0710 ; 09 ;
摘要
Background: High-grade serous ovarian cancers are a distinct histological subtype of ovarian cancer often characterised by a dysfunctional BRCA/Fanconi anaemia (BRCA/FA) pathway, which is critical to the homologous recombination DNA repair machinery. An impaired BRCA/FA pathway sensitises tumours to the treatment with DNA cross-linking agents and to PARP inhibitors. The vast majority of inactivating mutations in the BRCA/FA pathway are in the BRCA1 and BRCA2 genes and occur predominantly in high-grade serous cancer. Another member of the BRCA/FA pathway, PALB2 (FANCN), was reported to have been inactivated by DNA methylation in some sporadic ovarian cancers. We therefore sought to investigate the role of PALB2 methylation in high-grade serous ovarian cancers. Finding: PALB2 methylation was investigated in 92 high-grade serous ovarian cancer samples using methylation-sensitive high-resolution melting analysis. DNA methylation of PALB2 was not detected in any of the ovarian cancer samples investigated. Conclusion: Epigenetic silencing by DNA methylation of PALB2 is not a common event in high-grade serous ovarian cancers.
引用
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页数:4
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