Final Activity Report Summary - EPIGENETIC REGULATIO (Acquisition and regulation of epigenetic marks in mammals.)
Using the mouse as a model, this on-going project aims to unravel the nature of the imprints at the sequence elements that control imprinting (the imprinting-control centres). It examines which features of the DNA sequences at imprinting-control centres are essential for the initiation of this process. The project focuses on the involvement of histone methylation at imprinting-control centres, and on methylation of CpG dinucleotides in the DNA. These epigenetic modifications are investigated at representative imprinted loci, by coupling chromatin immuno-precipitation with bisulphite genomic sequencing, during the resetting and acquisition of the imprints in the germ cell lineage. First insights from these exploratory analyses enabled us to design a targeting approach that will tests for functional significance a candidate region potentially important for the acquisition of the imprint.
Results obtained will enhance our general understanding of the developmental regulation of gene expression in mammals. They will help also, to elucidate the underlying cause(s) of human diseases caused by alterations in epigenetic patterns, including mental retardation, growth syndromes, and cancer.