DNA methylation profiles in red blood cells of adult hens correlate with their rearing conditions

Autor(es)

Pertille, Fabio ^{[1, 2]} ; Brantsaeter, Margrethe ^[3] ; Nordgreen, Janicke ; Coutinho, Luiz Lehmann ^[2] ; Janczak, Andrew M. ^[3] ; Jensen, Per ^[1] ; Guerrero-Bosagna, Carlos ^[1]

Afiliação do(s) autor(es)

^[1] Linkoping Univ, Avian Behav Genom & Physiol Grp, IFM Biol, SE-58183 Linkoping - Sweden

^[2] Univ Sao Paulo, Anim Biotechnol Lab, Anim Sci & Pastures Dept, Luiz de Queiroz Coll Agr ESALQ, BR-13418900 Sao Paulo - Brazil

^[3] Norwegian Univ Life Sci, Fac Vet Med, Dept Prod Anim Clin Sci, Anim Welf Res Grp, N-0033 Oslo - Norway

• Tipo de documento: Artigo Científico
• Fonte: Journal of Experimental Biology; v. 220, n. 19, p. 3579-3587, OCT 1 2017.
• Citações Web of Science: 8

Resumo

Stressful conditions are common in the environment where production animals are reared. Stress in animals is usually determined by the levels of stress-related hormones. A big challenge, however, is in determining the history of exposure of an organism to stress, because the release of stress hormones can show an acute (and recent) but not a sustained exposure to stress. Epigenetic tools provide an alternative option to evaluate past exposure to long-termstress. Chickens provide a unique model to study stress effects in the epigenome of red blood cells (RBCs), a cell type of easy access and nucleated in birds. The present study investigated whether two different rearing conditions in chickens can be identified by looking at DNA methylation patterns in their RBCs later in life. These conditions were rearing in open aviaries versus in cages, which are likely to differ regarding the amount of stress they generate. Our comparison revealed 115 genomic windows with significant changes in RBC DNA methylation between experimental groups, which were located around 53 genes and within 22 intronic regions. Our results set the ground for future detection of long-term stress in live production animals by measuring DNA methylation in a cell type of easy accessibility. (AU)

• Processo FAPESP: 16/20440-3 - Análise epigenética de perfil de metilação em frangos submetidos à condições de estresse no ambiente de produção
• Beneficiário: Fábio Pértille
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado
• Processo FAPESP: 14/08704-0 - Identificação de locos de interesse zootécnico na galinha doméstica
• Beneficiário: Luiz Lehmann Coutinho
• Modalidade de apoio: Auxílio à Pesquisa - Temático