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Series GSE62719 Query DataSets for GSE62719
Status Public on Feb 28, 2015
Title Haploinsufficiency, but not defective paternal 5mC oxidation, accounts for the developmental defects of maternal Tet3 knockouts
Organism Mus musculus
Experiment type Methylation profiling by high throughput sequencing
Summary DNA demethylation of paternal genome in zygotes takes place in various mammals including mice and human. Recent studies have revealed that this is achieved through Tet3-mediated iterative oxidation of 5-methylcytosine (5mC) coupled with replication-dependent dilution. Tet3-mediated paternal DNA demethylation is believed to be required for mouse development given that Tet3 heterozygous embryos, derived by fertilizing Tet3 knockout (KO) oocytes with wild-type (WT) sperms, exhibit 5mC oxidation defects and embryonic sublethality, Here we demonstrate that the sublethality phenotype of the maternal KO mice is caused by haploinsufficiency of Tet3, but not by defective paternal 5mC oxidation. We found that Tet3 heterozygous mice derived from crosses of heterozygous father or mother with WT mice also exhibit sublethality phenotype similarly to Tet3 maternal KO mice. Importantly, embryos reconstituted with WT paternal nuclei that bypassed 5mC oxidation develop to term and grow to adulthood normally. Genome-scale DNA methylation analysis of the maternal KO zygotes and blastocysts demonstrated that hypermethylation caused by the depletion of maternal Tet3 is largely diminished by the blastocyst stage. Our study thus not only demonstrates that Tet3-mediated paternal 5mC oxidation is dispensable for mouse development but also suggests the existence of a compensation mechanism in preimplantation embryos that can compensate for the defective 5mC oxidation in zygotes.
Overall design This data set includes RRBS data of wild-type and maternal Tet3 KO zygotes and blastocysts (C57BL/6J x CAST/EiJ)
Contributor(s) Inoue A, Shen L, Matob S, Zhang Y
Citation(s) 25640176
Submission date Oct 26, 2014
Last update date May 15, 2019
Contact name Li Shen
Organization name HHMI/Boston Children's Hospital/Harvard Medical School
Street address 200 Longwood Ave
City Boston
ZIP/Postal code 02115
Country USA
Platforms (1)
GPL17021 Illumina HiSeq 2500 (Mus musculus)
Samples (10)
GSM1532315 CAST-Sperm-rep1
GSM1532316 CAST-Sperm-rep2
GSM1532317 WT-Zygote-rep1
BioProject PRJNA264894
SRA SRP049279

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Supplementary file Size Download File type/resource
GSE62719_RAW.tar 10.4 Mb (http)(custom) TAR (of TXT)
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Raw data are available in SRA
Processed data provided as supplementary file

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