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Global methylome scores correlate with histological subtypes of colorectal carcinoma and show different associations with common clinical and molecular features |
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| Author: | Turpín-Sevilla, María del Carmen1; Pérez-Sanz, Fernando2; García-Solano, José3,4,5; |
| Organizations: |
1Facultad de Medicina, Universidad Francisco de Vitoria, Ctra. Pozuelo-Majadahonda, Km 1800, Pozuelo de Alarcón, 28223 Madrid, Spain 2Biomedical Informatics & Bioinformatics Platform, Institute for Biomedical Research of Murcia (IMIB)/Foundation for Healthcare Training & Research of the Region of Murcia (FFIS), Calle Luis Fontes Pagán 9, 30003 Murcia, Spain 3Department of Pathology, Santa Lucía General University Hospital (HGUSL), C/Mezquita s/n, 30202 Cartagena, Spain
4Facultad de Ciencias de la Salud, Universidad Católica de Murcia (UCAM), Campus Los Jerónimos, 30107 Guadalupe, Spain
5Group of Molecular Pathology and Pharmacogenetics, Institute for Biomedical Research from Murcia (IMIB), HGUSL, 30202 Cartagena, Spain 6IVI Foundation, Instituto de Investigación Sanitaria La Fe (IIS La Fe), 46026 Valencia, Spain 7Department of Internal Medicine, Santa Lucía General University Hospital (HGUSL), C/Mezquita s/n, 30202 Cartagena, Spain 8Biochemistry and Clinical Genetic Center, Virgen de la Arrixaca University Hospital, 30100 Murcia, Spain 9Department of Social Psychology and Methodology, Universidad Autónoma de Madrid, 28049 Madrid, Spain 10Cancer and Translational Medicine Research Unit, Department of Pathology, University of Oulu, P.O. Box 5000, 90014 Oulu, Finland 11QIMR Berghofer Medical Research Institute, Herston, QLD 4006, Australia 12Conjoint Internal Medicine Laboratory, Pathology Queensland, Herston, QLD 4006, Australia 13Faculty of Medicine, The University of Queensland, Herston, QLD 4072, Australia 14Clinical Oncology Department, Santa Lucía General University Hospital (HGUSL). C/Mezquita s/n, 30202 Cartagena, Spain 15Microbiology and Cell Sciences Department, Institute for Food and Agricultural Sciences, Genetics Institute, University of Florida, Gainesville, FL 32611, USA 16Department of Clinical Analysis, Santa Lucía General University Hospital (HGUSL), C/Mezquita s/n, 30202 Cartagena, Spain |
| Format: | article |
| Version: | published version |
| Access: | open |
| Online Access: | PDF Full Text (PDF, 1.1 MB) |
| Persistent link: | http://urn.fi/urn:nbn:fi-fe2021111855881 |
| Language: | English |
| Published: |
Multidisciplinary Digital Publishing Institute,
2021
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| Publish Date: | 2021-11-18 |
| Description: |
AbstractBackground: The typical methylation patterns associated with cancer are hypermethylation at gene promoters and global genome hypomethylation. Aberrant CpG island hypermethylation at promoter regions and global genome hypomethylation have not been associated with histological colorectal carcinomas (CRC) subsets. Using Illumina’s 450 k Infinium Human Methylation beadchip, the methylome of 82 CRCs were analyzed, comprising different histological subtypes: 40 serrated adenocarcinomas (SAC), 32 conventional carcinomas (CC) and 10 CRCs showing histological and molecular features of microsatellite instability (hmMSI-H), and, additionally, 35 normal adjacent mucosae. Scores reflecting the overall methylation at 250 bp, 1 kb and 2 kb from the transcription starting site (TSS) were studied. Results: SAC has an intermediate methylation pattern between CC and hmMSI-H for the three genome locations. In addition, the shift from promoter hypermethylation to genomic hypomethylation occurs at a small sequence between 250 bp and 1 Kb from the gene TSS, and an asymmetric distribution of methylation was observed between both sides of the CpG islands (N vs. S shores). Conclusion: These findings show that different histological subtypes of CRC have a particular global methylation pattern depending on sequence distance to TSS and highlight the so far underestimated importance of CpGs aberrantly hypomethylated in the clinical phenotype of CRCs. see all
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| Series: |
Cancers |
| ISSN: | 2072-6694 |
| ISSN-E: | 2072-6694 |
| ISSN-L: | 2072-6694 |
| Volume: | 13 |
| Issue: | 20 |
| Article number: | 5165 |
| DOI: | 10.3390/cancers13205165 |
| OADOI: | https://oadoi.org/10.3390/cancers13205165 |
| Type of Publication: |
A1 Journal article – refereed |
| Field of Science: |
3122 Cancers |
| Subjects: | |
| Funding: |
This work was supported by two grants from Instituto de Salud Carlos III, Ministerio de Sanidad, Spain and FEDER funds (refs: PI12-1232, PI18-0144) and another from the European Union’s Horizon 2020 research and innovation program (ref. 848098). |
| Copyright information: |
© 2021 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). |
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https://creativecommons.org/licenses/by/4.0/ |