| Texto completo | |
| Autor(es): |
Dangoni, Gustavo Dib
;
Barbosa Teixeira, Anne Caroline
;
Camargo Vince, Carolina Sgarioni
;
Novak, Estela Maria
;
Gimenez, Thamiris Magalhaes
;
Maschietto, Mariana
;
Odone Filho, Vicente
;
Victorino Krepischi, Ana Cristina
Número total de Autores: 8
|
| Tipo de documento: | Artigo Científico |
| Fonte: | JOURNAL OF DEVELOPMENTAL ORIGINS OF HEALTH AND DISEASE; v. 14, n. 1, p. 6-pg., 2022-09-26. |
| Resumo | |
The multifactorial etiology of pediatric cancer is poorly understood. Environmental factors occurring during embryogenesis can disrupt epigenetic signaling, resulting in several diseases after birth, including cancer. Associations between assisted reproductive technologies (ART), such as in vitro fertilization (IVF), and birth defects, imprinting disorders and other perinatal adverse events have been reported. IVF can result in methylation changes in the offspring, and a link with pediatric cancer has been suggested. In this study, we investigated the peripheral blood methylomes of 11 patients conceived by IVF who developed cancer in childhood. Methylation data of patients and paired sex/aged controls were obtained using the Infinium MethylationEPIC Kit (Illumina). We identified 25 differentially methylated regions (DMRs), 17 of them hypermethylated, and 8 hypomethylated in patients. The most significant DMR was a hypermethylated genomic segment located in the promoter region of LHX6, a transcription factor involved in the forebrain development and interneuron migration during embryogenesis. An additional control group was included to verify the LHX6 methylation status in children with similar cancers who were not conceived by ART. The higher LHX6 methylation levels in IVF patients compared to both control groups (healthy children and children conceived naturally who developed similar pediatric cancers), suggested that hypermethylation at the LHX6 promoter could be due to the IVF process and not secondary to the cancer itself. Further studies are required to evaluate this association and the potential role of LHX6 promoter hypermethylation for tumorigenesis. (AU) | |
| Processo FAPESP: | 18/21047-9 - Câncer na infância - predisposição genética e mecanismos de origem |
| Beneficiário: | Ana Cristina Victorino Krepischi |
| Modalidade de apoio: | Auxílio à Pesquisa - Regular |
| Processo FAPESP: | 18/05961-2 - Identificação variantes genéticas relacionadas à predisposição a câncer em coorte de pacientes com tumores embrionários e tumores pediátricos com sinais clínicos adicionais |
| Beneficiário: | Anne Caroline Barbosa Teixeira |
| Modalidade de apoio: | Bolsas no Brasil - Pós-Doutorado |