DNA methylation profiles of mice embryos (E7.5) of the control group and arsenic group_2nd experiment
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ABSTRACT: The control or gestationally arsenic exposed F1 males (C3H strain) and C57BL/6 strain (B6) females were crossed and F2 male embryos were obtained on embryonic day 7.5 (E7.5). The DNA methylomes of the embryos were investigated by RRBS method.
Project description:The control or gestationally arsenic exposed F1 males (C3H strain) and C57BL/6 strain (B6) females were crossed and F2 male embryos were obtained on embryonic day 7.5 (E7.5). The DNA methylomes of the embryos were investigated by RRBS method.
Project description:Primordial germ cell mRNA profiles from cells microdissected from e6.5, e7.5 and e8.5 embryos, e7.5 somatic neighbours and Blimp1-KO mice were generated by single cell library construction and sequencing in duplicate using Applied Biosystems SOLiD sequencer. Single cell library construction is described in: Tang f. et. al, Nature Protocols (2010), Vol. 5, p.516.
Project description:Comparison of the transcriptional profile of cells expressing FOXF1::VENUS and/or FLK1 in E7.5 mouse embryos carrying a foxf1::venus knock-in allele
Project description:Pregnant C3H mice were given tap water (control group) and tap water containing 85 ppm sodium arsenite from gestational day 8 to 18 (arsenic group), respectively. The DNA methylomes of sperm of F1 mice were investigated by RRBS method. The results showed that gestational arsenic exposure increased hypomethylated cytosines in the F1 sperm genome. The present study has indicated environmental impacts on sperm DNA methylome establishment.
Project description:Pregnant C3H mice were given tap water (control group) and tap water containing 85 ppm sodium arsenite from gestational day 8 to 18 (arsenic group), respectively. The DNA methylomes of sperm of F1 mice were investigated by RRBS method. The results showed that gestational arsenic exposure increased hypomethylated cytosines in active retrotransposon subfamilies. The present study has indicated environmental impacts on sperm DNA methylome establishment.
Project description:Arsenic is an ubiquitous contaminant and a toxic metalloid which presents two main redox states in nature: arsenite [AsIII] and arsenate [AsV]. Arsenic resistance in Synechocystis sp. strain PCC 6803 is mediated by the arsBHC operon and two additional arsenate reductases encoded by the arsI1 and arsI2 genes. Here we describe the genome-wide responses in response to the presence of arsenate and arsenite in wild type and in mutants in the arsenic resistance system. Both forms of arsenic produced similar responses in the wild type strain including induction of several stress related genes and repression of energy generation processes. The responses observed in the arsB mutant strain were similar to the wild type in short term but were maintained in time while they were only transient in the wild type strain. In contrast, the responses observed in a strain lacking all arsenate reductases (the SARS12 strain) were somewhat different and included lower induction of genes involved in metal homeostasis and Fe-S cluster biogenesis. These results suggest that these two processes are targeted by arsenite in the wild type strain. Finally, analysis of the arsR mutant strain revealed that ArsR seems to only control 5 genes in the genome. Furthermore, over-expression of ArsB conferred hypersentivity to nickel, copper and cadmium in an arsR mutant strain.
Project description:Mesp1-Cre+ cells from E7.5 mouse embryos (from the cross Mesp1-Cre/+ x Rosa26-Gli3R-IRES-YFP/tdTomato) were sorted by FACS where wild type (tdTomato-expressing) and mutant (Gli3R + YFP co-expressing) cells were collected separately from single litters.