Bisulfite genomic sequencing-derived methylation profile of the xist gene throughout early mouse development.
Differential epigenetic modification by methylation of CpG dinucleotides is a candidate mechanism that may identify the alleles of imprinted genes and result in monoallelic expression of either the maternal or the paternal allele. Determination of the allelic methylation status of imprinted genes in the gametes and during early development is constrained by the limiting quantities of genomic DNA available from these early developmental stages. To circumvent this problem we have used bisulfite genomic sequencing to determine the allelic methylation status of the minimal promoter and a 1-kb region within the Xist gene during preimplantation development. We find that the parental Xist alleles are not differentially methylated in these regions. Our findings are discussed in the context of previous conflicting data obtained using methylation-sensitive restriction enzyme digestion followed by PCR amplification to assay for methylation.
McDonald
L E
LE
QCF Transgenic Laboratory, Joint Experimental Oncology Program, The Queensland Institute of Medical Research and The University of Queensland, Brisbane, Queensland, 4029, Australia.
Paterson
C A
CA
Kay
G F
GF
D000818:Animals; D018899:CpG Islands; D019175:DNA Methylation; D047108:Embryonic Development / Q000235:genetics*; D005260:Female; D018507:Gene Expression Regulation, Developmental; D018392:Genomic Imprinting; D008297:Male; D051379:Mice; D008815:Mice, Inbred Strains; D009865:Oocytes / Q000502:physiology; D011110:Polymorphism, Genetic; D011247:Pregnancy; D062085:RNA, Long Noncoding; D022661:RNA, Untranslated; D017422:Sequence Analysis, DNA; D013094:Spermatozoa / Q000502:physiology; D013154:Spleen / Q000502:physiology; D013447:Sulfites / Q000737:chemistry / Q000494:pharmacology; D014157:Transcription Factors / Q000187:drug effects / Q000235:genetics* / Q000378:metabolism
D062085:RNA, Long Noncoding; D022661:RNA, Untranslated; D013447:Sulfites; D014157:Transcription Factors; C077885:XIST non-coding RNA; C042345:hydrogen sulfite