University of Limerick Institutional Repository

Accelerating onset of puberty through modification of early life nutrition induces modest but persistent changes in bull sperm DNA methylation profiles post-puberty

DSpace Repository

Show simple item record Perrier, Jean-Philippe Kenny, David A. Chaulot-Talmon, Aurélie Byrne, Colin J. Sellem, Eli Jouneau, Luc Aubert-Frambourg, Anne Schibler, Laurent Jammes, Hélène Lonergan, Patrick Fair, Sean Kiefer, Hélène 2020-09-22T09:27:16Z 2020-09-22T09:27:16Z 2020
dc.description peer-reviewed en_US
dc.description.abstract In humans and model species, alterations of sperm DNA methylation patterns have been reported in cases of spermatogenesis defects, male infertility and exposure to toxins or nutritional challenges, suggesting that a memory of environmental or physiological changes is recorded in the sperm methylome. The objective of this study was to ascertain if early life plane of nutrition could have a latent effect on DNA methylation patterns in sperm produced post-puberty. Holstein-Friesian calves were assigned to either a high (H) or moderate (M) plane of nutrition for the first 24 weeks of age, then reassigned to the M diet until puberty, resulting in HM and MM groups. Sperm DNA methylation patterns from contrasted subgroups of bulls in the HM (ejaculates recovered at 15 months of age; n = 9) and in the MM (15 and 16 months of age; n = 7 and 9, respectively) were obtained using Reduced Representation Bisulfite Sequencing. Both 15 and 16 months were selected in the MM treatment as these bulls reached puberty approximately 1 month after the HM bulls. Hierarchical clustering demonstrated that inter-individual variability unrelated to diet or age dominated DNA methylation profiles. While the comparison between 15 and 16 months# of age revealed almost no change, 580 differentially methylated CpGs (DMCs) were identified between the HM and MM groups. Differentially methylated CpGs were mostly hypermethylated in the HM group, and enriched in endogenous retrotransposons, introns, intergenic regions, and shores and shelves of CpG islands. Furthermore, genes involved in spermatogenesis, Sertoli cell function, and the hypothalamic–pituitary–gonadal axis were targeted by differential methylation when HM and MM groups were compared at 15 months of age, reflecting the earlier timing of puberty onset in the HM bulls. In contrast, the genes still differentially methylated in MM bulls at 16 months of age were enriched for ATP-binding molecular function, suggesting that changes to the sperm methylome could persist even after the HM and MM bulls reached a similar level of sexual maturity. Together, results demonstrate that enhanced plane of nutrition in pre-pubertal calves associated with advanced puberty induced modest but persistent changes in sperm DNA methylation profiles after puberty. en_US
dc.language.iso eng en_US
dc.publisher Frontiers Media en_US
dc.relation 16/IA/4474 en_US
dc.relation.ispartofseries Frontiers in Genetics;11, 945
dc.subject Bovine en_US
dc.subject puberty en_US
dc.subject spermatozoa en_US
dc.subject DNA methylation en_US
dc.title Accelerating onset of puberty through modification of early life nutrition induces modest but persistent changes in bull sperm DNA methylation profiles post-puberty en_US
dc.type info:eu-repo/semantics/article en_US
dc.type.supercollection all_ul_research en_US
dc.type.supercollection ul_published_reviewed en_US
dc.identifier.doi 10.3389/fgene.2020.00945
dc.contributor.sponsor IDA en_US
dc.contributor.sponsor SFI en_US
dc.contributor.sponsor French National Research Agency en_US
dc.relation.projectid 16/IA/4474 en_US
dc.relation.projectid ANR-13-LAB3-0008-01 en_US
dc.rights.accessrights info:eu-repo/semantics/openAccess en_US

Files in this item

This item appears in the following Collection(s)

Show simple item record

Search ULIR


My Account