C57BL/6 mouse embryo stem cells(mESC)-based transcription change in expression profile microarray with folate deficiency
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ABSTRACT:
PROVIDER: PRJNA511449 | ENA |
REPOSITORIES: ENA
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Project description:Different genes were chosen according to folate deficiency in the microarray. In the study here,C57BL/6C mESC with six consecutive generations under folate-deficiency was used to obtain whole genome-based expression microarray.
2018-12-22 | GSE124271 | GEO
Project description:Wnt signaling plays a major role in early neural development. An aberrant activation in Wnt/β-catenin pathway leads to defective anteroposterior patterning, resulting in neural tube closure defects (NTDs). Changes in folate metabolism may participate in early embryo fate determination. We report here that in C57BL/6C mouse embryonic stem cells (mESC), folate deficiency activates Wnt/β-catenin pathway by upregulating a chorion-specific transcription factor Gcm1. Specifically, folate deficiency promotes the formation of the Gcm1/β-catenin/T-cell factor (TCF4) complex to regulate the Wnt target gene transactivation through the Wnt-responsive elements. Moreover, the enhanced transcriptional activity of Gcm1 is found to be dependent on CREB binding protein. Lastly, in NTDs mouse models and low folate NTDs human brain samples, Gcm1 and Wnt/β-catenin target genes related to neural tube closure are specifically overexpressed. These results indicate that low folate promotes Wnt/β-catenin signaling via activating Gcm1, leading to aberrant vertebrate neural development
2018-12-27 | GSE124339 | GEO
Project description:This SuperSeries is composed of the following subset Series: GSE9242: Dietary folate depletion and repletion in A/J and C57BL/6J mice GSE9243: Dietary folate depletion and repletion in C57BL/6J mice, ApoE knockout mice, and choline supplemented C57BL/6J mice Keywords: SuperSeries Refer to individual Series
2010-06-20 | E-GEOD-9245 | biostudies-arrayexpress
Project description:Folate is a vitamin essential for cell growth and has been used to prevent congenital abnormalities. However, little is known about how folate affects health in older adults. We examined healthspan as a function of dietary folate intake. To begin to measure such effects, we performed a small (2x2; sex-by-diet) pilot study in the long-lived inbred mouse strain C57BL/6.
2024-02-09 | GSE245438 | GEO
Project description:Transcriptome analysis of mouse embryonic stem cell lines derived from embryos cultured in optimal and suboptimal conditions compared to cell lines derived from control embryos. The use of assisted reproductive technologies (ART) such as in vitro fertilization (IVF) has resulted in the birth of more than 5 million children. While children conceived by these technologies are generally healthy, there is conflicting evidence suggesting an increase in adult-onset complications like glucose intolerance and high blood pressure in IVF children. Animal models indicate similar potential risks. It remains unclear what molecular mechanisms may be operating during in vitro culture to predispose the embryo to these diseases. One of the limitations faced by investigators is the paucity of the material in the preimplantation embryo to test for molecular analysis. To address this problem, we generated mouse embryonic stem cells (mESC) from blastocysts conceived after natural mating (mESCFB) or after IVF, using optimal (KSOM + 5% O2; mESCKAA) and suboptimal (Whitten’s Medium, + 20% O2, mESCWM) conditions.
2015-03-31 | GSE63821 | GEO
Project description:Transcriptome analysis of mouse embryonic stem cell lines derived from embryos cultured in optimal and suboptimal conditions compared to cell lines derived from control embryos. The use of assisted reproductive technologies (ART) such as in vitro fertilization (IVF) has resulted in the birth of more than 5 million children. While children conceived by these technologies are generally healthy, there is conflicting evidence suggesting an increase in adult-onset complications like glucose intolerance and high blood pressure in IVF children. Animal models indicate similar potential risks. It remains unclear what molecular mechanisms may be operating during in vitro culture to predispose the embryo to these diseases. One of the limitations faced by investigators is the paucity of the material in the preimplantation embryo to test for molecular analysis. To address this problem, we generated mouse embryonic stem cells (mESC) from blastocysts conceived after natural mating (mESCFB) or after IVF, using optimal (KSOM + 5% O2; mESCKAA) and suboptimal (Whitten’s Medium, + 20% O2, mESCWM) conditions. We analyzed three female cell lines per group for a total of nine mouse embryonic stem cells on Affymetrix MoGene 1.0 ST Arrays.
2015-03-31 | E-GEOD-63821 | biostudies-arrayexpress
Project description:Neural tube defects (NTDs) are one of the most severe congenital abnormalities. Maternal folate deficiency could impact the occurrence of NTDs. Histone H3 methyltransferase disruptor of telomeric silencing 1-like (DOT1L) expression was significantly downregulated, and low levels of H3K79me2 were found in the corresponding NTDs samples with their maternal serum folate under low levels. Using ChIP-seq assays, we found that a decrease of H3K79me2 downregulates the expression of Shh and Sufu in mouse embryonic stem cells (mESC) under folate deficiency. Our results indicate that abnormal Shh and Sufu genes expression reduced by aberrant Dot1l-mediated H3K79me2 levels could be the cause of NTDs occurrence.
2023-07-25 | GSE238081 | GEO
Project description:To identify transcriptional targets altered in the embryonic heart after exposure to TCE, and possible protective effects of folate, we used DNA microarray technology to profile gene expression in embryonic mouse hearts with maternal TCE exposure and dietary changes in maternal folate. Results: Exposure to low doses of TCE (10ppb) caused extensive alterations in transcripts encoding proteins involved in transport, ion channel, transcription, differentiation, cytoskeleton, cell cycle and apoptosis. Exogenous folate did not offset the effects of TCE exposure on normal gene expression and both high and low levels of folate produced additional significant changes in gene expression. Conclusions: A mechanism where TCE induces a folate deficiency does not explain altered gene expression patterns in the embryonic mouse heart. The data further suggest that use of folate supplementation, in the presence of this toxin, may be detrimental and non-protective of the developing embryo.
2009-12-01 | GSE18009 | GEO
Project description:Defects in homocysteine and folate metabolism are associated with increased risks for neural tube and congenital heart defects, cardiovascular disease and stroke, cancers, and neurodegeneration. In many but not all cases, dietary supplementation with folate significantly reduces the severity and incidence of these conditions. Common polymorphisms modulate these metabolic pathways and disease risks, but do not fully account for the particular birth defects and adult diseases that occur in at-risk individuals. To test whether other pathways contribute to disease pathogenesis, we analyzed global and pathway-specific changes in gene expression and levels of selected metabolites after depletion and repletion of dietary folate in two genetically distinct inbred strains of mice. Compared to the C57BL/6J strain, A/J showed greater homeostatic response to folate perturbation by retaining a higher serum folate level and minimizing global gene expression changes. Remarkably, folate perturbation led to systematic strain-specific differences only in the expression profile of the cholesterol biosynthesis pathway and translated to changes in levels of serum and liver total cholesterol. By genetically increasing serum and liver total cholesterol levels in APOE deficient mice, we modestly but significantly improved folate retention during folate depletion, suggesting an interplay between homocysteine and folate metabolism and cholesterol metabolism. Absence of measurable changes in global methylation patterns or amelioration of effects with supplementation with an alternative methyl donor suggest that dietary folate perturbations do not act through large-scale or general changes in methylation. These results suggest that homeostatic responses in cholesterol metabolism contribute to the beneficial effects of dietary folate supplementation. Keywords: time course, stress response, diet, genetic, homeostasis
2008-08-27 | GSE9242 | GEO
Project description:Defects in homocysteine and folate metabolism are associated with increased risks for neural tube and congenital heart defects, cardiovascular disease and stroke, cancers, and neurodegeneration. In many but not all cases, dietary supplementation with folate significantly reduces the severity and incidence of these conditions. Common polymorphisms modulate these metabolic pathways and disease risks, but do not fully account for the particular birth defects and adult diseases that occur in at-risk individuals. To test whether other pathways contribute to disease pathogenesis, we analyzed global and pathway-specific changes in gene expression and levels of selected metabolites after depletion and repletion of dietary folate in two genetically distinct inbred strains of mice. Compared to the C57BL/6J strain, A/J showed greater homeostatic response to folate perturbation by retaining a higher serum folate level and minimizing global gene expression changes. Remarkably, folate perturbation led to systematic strain-specific differences only in the expression profile of the cholesterol biosynthesis pathway and translated to changes in levels of serum and liver total cholesterol. By genetically increasing serum and liver total cholesterol levels in APOE deficient mice, we modestly but significantly improved folate retention during folate depletion, suggesting an interplay between homocysteine and folate metabolism and cholesterol metabolism. Absence of measurable changes in global methylation patterns or amelioration of effects with supplementation with an alternative methyl donor suggest that dietary folate perturbations do not act through large-scale or general changes in methylation. These results suggest that homeostatic responses in cholesterol metabolism contribute to the beneficial effects of dietary folate supplementation. Keywords: time course, stress response, diet, genetic, homeostasis Six-week old female C57BL/6J and B6.129P2-Apoetm1Unc/J (Piedrahita et al. 1992) mice were purchased from the Jackson Laboratory. All mice were raised on a control diet containing four ppm folic acid (Basal Diet 5755, TestDiet) for one week before the start of studies. Mice were then placed on folic acid deficient diet (58C3, TestDiet) containing 1% succinylsulfathiazole, a non-absorbable antibiotic commonly used to suppress folate production by bacteria in the intestine, for 14 days. A subset of these mice were placed back on control diet for 7 days after 14 day depletion. There were three groups of mice that underwent folic acid depletion and repletion. ApoE knockout mice on C57BL/6J background, C57BL/6J mice supplemented with 25mM choline and 50mM saccharine in drinking water, and C57BL/6J mice supplemented with 50mM saccharine. Saccharine was used to reduce the bitter taste of choline in the drinking water. We also had C57BL/6J mice on the control diet for 14 days and 21 days. These mice served as controls for treated mice from each time point during hybridization. The folate level in the control diet for this study was significantly lower than the previous study (GSE9242) due to greater loss of folic acid by irradiation of the diet. There were eight replicate mice per treatment group per folic acid perturbation protocol. An equal amount (by weight) of liver tissue from eight replicate mice was separated into two pools of four replicate tissues each. Pooled RNA from treated mice and pooled RNA from control mice for each time point were aminoallyl labeled with Cy3 and Cy5 in duplicate with reversing of dyes.
2008-08-27 | E-GEOD-9243 | biostudies-arrayexpress