Loss of 5hmC identifies a new type of aberrant DNA hypermethylation in glioma


Por: Fernandez, AF, Bayon, GF, Sierra, MI, Urdinguio, RG, Torano, E, Garcia, MG, Carella, A, Lopez, V, Santamarina, P, Perez, RF, Belmonte, T, Tejedor, JR, Cobo, I, Menendez, P, Mangas, C, Ferrero, C, Rodrigo, L, Astudillo, A, Ortea, I, Diaz, SC, Rodriguez-Gonzalez, P, Alonso, JIG, Mollejo, M, Melendez, B, Dominguez, G, Bonilla, F and Fraga, MF

Publicada: 1 sep 2018
Resumen:
Aberrant DNA hypermethylation is a hallmark of cancer although the underlying molecular mechanisms are still poorly understood. To study the possible role of 5-hydroxymethylcytosine (5hmC) in this process we analyzed the global and locus-specific genome-wide levels of 5hmC and 5-methylcytosine (5mC) in human primary samples from 12 non-tumoral brains and 53 gliomas. We found that the levels of 5hmC identified in non-tumoral samples were significantly reduced in gliomas. Strikingly, hypo-hydroxymethylation at 4627 (9.3%) CpG sites was associated with aberrant DNA hypermethylation and was strongly enriched in CpG island shores. The DNA regions containing these CpG sites were enriched in H3K4me2 and presented a different genuine chromatin signature to that characteristic of the genes classically aberrantly hypermethylated in cancer. As this 5mC gain is inversely correlated with loss of 5hmC and has not been identified with classical sodium bisulfite-based technologies, we conclude that our data identifies a novel 5hmC-dependent type of aberrant DNA hypermethylation in glioma.

Filiaciones:
Fernandez, AF:
 Univ Oviedo, Inst Oncol Asturias IUOPA, ISPA HUCA, Principado Asturias, Oviedo, Spain

Bayon, GF:
 Univ Oviedo, Inst Oncol Asturias IUOPA, ISPA HUCA, Principado Asturias, Oviedo, Spain

Sierra, MI:
 Univ Oviedo, Inst Oncol Asturias IUOPA, ISPA HUCA, Principado Asturias, Oviedo, Spain

Urdinguio, RG:
 Univ Oviedo, Nanomat & Nanotechnol Res Ctr CINN CSIC, Principado Asturias, Oviedo, Spain

Torano, E:
 Univ Oviedo, Inst Oncol Asturias IUOPA, ISPA HUCA, Principado Asturias, Oviedo, Spain

 Univ Oviedo, Nanomat & Nanotechnol Res Ctr CINN CSIC, Principado Asturias, Oviedo, Spain

Garcia, MG:
 Univ Oviedo, Inst Oncol Asturias IUOPA, ISPA HUCA, Principado Asturias, Oviedo, Spain

 Univ Oviedo, Nanomat & Nanotechnol Res Ctr CINN CSIC, Principado Asturias, Oviedo, Spain

Carella, A:
 Univ Oviedo, Inst Oncol Asturias IUOPA, ISPA HUCA, Principado Asturias, Oviedo, Spain

 Univ Oviedo, Nanomat & Nanotechnol Res Ctr CINN CSIC, Principado Asturias, Oviedo, Spain

Lopez, V:
 Univ Oviedo, Nanomat & Nanotechnol Res Ctr CINN CSIC, Principado Asturias, Oviedo, Spain

Santamarina, P:
 Univ Oviedo, Inst Oncol Asturias IUOPA, ISPA HUCA, Principado Asturias, Oviedo, Spain

 Univ Oviedo, Nanomat & Nanotechnol Res Ctr CINN CSIC, Principado Asturias, Oviedo, Spain

Perez, RF:
 Univ Oviedo, Inst Oncol Asturias IUOPA, ISPA HUCA, Principado Asturias, Oviedo, Spain

 Univ Oviedo, Nanomat & Nanotechnol Res Ctr CINN CSIC, Principado Asturias, Oviedo, Spain

Belmonte, T:
 Univ Oviedo, Inst Oncol Asturias IUOPA, ISPA HUCA, Principado Asturias, Oviedo, Spain

 Univ Oviedo, Nanomat & Nanotechnol Res Ctr CINN CSIC, Principado Asturias, Oviedo, Spain

Tejedor, JR:
 Univ Oviedo, Inst Oncol Asturias IUOPA, ISPA HUCA, Principado Asturias, Oviedo, Spain

Cobo, I:
 Univ Oviedo, Inst Oncol Asturias IUOPA, ISPA HUCA, Principado Asturias, Oviedo, Spain

 Univ Barcelona, Josep Carreras Leukemia Res Inst, Sch Med, Dept Biomed, Barcelona, Spain

:
 Univ Barcelona, Josep Carreras Leukemia Res Inst, Sch Med, Dept Biomed, Barcelona, Spain

 ISCIII, Inst Catalana Recerca & Estudis Avancats ICREA, Ctr Invest Biomed Red Canc CIBER ONC, Barcelona, Spain

Mangas, C:
 Univ Oviedo, Inst Oncol Asturias IUOPA, ISPA HUCA, Principado Asturias, Oviedo, Spain

Ferrero, C:
 Univ Oviedo, Inst Oncol Asturias IUOPA, ISPA HUCA, Principado Asturias, Oviedo, Spain

Rodrigo, L:
 Hosp Univ Cent Asturias, Inst Univ Oncol Principado Asturias, Dept Gastroenterol, Oviedo, Spain

Astudillo, A:
 Hosp Univ Cent Asturias, Inst Univ Oncol Principado Asturias, Dept Pathol, Oviedo, Spain

Ortea, I:
 Maimonides Inst Biomed Res, Prote Unit, IMIBIC, Cordoba, Spain

Diaz, SC:
 Univ Oviedo, Mass Spectrometry Unit, Oviedo, Spain

Rodriguez-Gonzalez, P:
 Univ Oviedo, Dept Phys & Analyt Chem, Oviedo, Spain

Alonso, JIG:
 Univ Oviedo, Dept Phys & Analyt Chem, Oviedo, Spain

Mollejo, M:
 Hosp Virgen de la Salud, Dept Pathol, Avd Barber 30, Toledo 45005, Spain

Melendez, B:
 Hosp Virgen de la Salud, Dept Pathol, Avd Barber 30, Toledo 45005, Spain

Dominguez, G:
 Univ Autonoma Barcelona, Med Oncol Serv, Fac Med, Hosp Univ Puerta de Hierro Majadahonda, Madrid, Spain

Bonilla, F:
 Univ Autonoma Barcelona, Med Oncol Serv, Fac Med, Hosp Univ Puerta de Hierro Majadahonda, Madrid, Spain

Fraga, MF:
 Univ Oviedo, Nanomat & Nanotechnol Res Ctr CINN CSIC, Principado Asturias, Oviedo, Spain
ISSN: 14602083





Human Molecular Genetics
Editorial
Oxford University Press, GREAT CLARENDON ST, OXFORD OX2 6DP, ENGLAND, Reino Unido
Tipo de documento: Article
Volumen: 27 Número: 17
Páginas: 3046-3059
WOS Id: 000444202300008
ID de PubMed: 29878202
imagen Bronze, Green Submitted

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