Single Cell Dna Methylation Sequencing

Recent technological innovations have spurred the development of methods that enable us to study the occurrence and biology of this mark at the single cell level.

Single cell dna methylation sequencing.

Benefits of methylation sequencing cytosine methylation can significantly modify temporal and spatial gene expression and chromatin remodeling. Here we performed single cell dna methylome sequencing for human preimplantation embryos and found that tens of thousands of genomic loci exhibited de novo dna methylation. It is essential for maintenance of cellular identity and is associated with a number of key processes including genomic imprinting x chromosome inactivation repression of transposable elements aging and carcinogenesis. Dna methylation is an epigenetic modification that plays an important role in gene expression regulation development and disease.

Here we apply single cell chromatin overall omic scale landscape sequencing sccool seq to generate a genome wide map of dna methylation and chromatin accessibility at single cell resolution during human preimplantation development. Single cell genome and transcriptome sequencing have revealed ith in several cancer types 8 12. There are several known types of methylation that occur in nature including 5 methylcytosine 5mc 5 hydroymethylcytosine 5hmc 6 methyladenine 6ma and 4mc 4 methylcytosine 4mc. Whole genome bisulphate methylc seq wgbs is the most comprehensive method for dname sequencing providing single base methylation profiles for more than 90 of the cpgs in the genome.

Line joxm 1 an induced pluripotent stem cell ipsc line derived from fibroblasts cells from hipsci project was cultured and triggered into differentiation towards endoderm. Dna methylation chromatin states and their interrelationships represent critical epigenetic information but these are largely unknown in human early embryos. Leveraging the power of next generation sequencing ngs both genome wide analysis and targeted approaches can provide researchers with insight into methylation patterns at a single nucleotide level. However single cell sequencing has been limited in the ability to characterize multiple layers.

Single cell dna methylome sequencing quantifies dna methylation. The described method enables single cell analysis of dna methylation in a broad range of biological systems including embryonic development stem cell differentiation and cancer. This finding indicates that genome wide dna methylation reprogramming during preimplantation development is a dynamic balance between strong global demethylation and drastic focused remethylation.