Cardiac transcriptome in iron-deficiency anemia
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PROVIDER: PRJNA682047 | ENA |
REPOSITORIES: ENA
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Project description:Purpose: The goal of this study was to probe for the effects of iron-deficiency anemia on the cardiac transciprtome using RNA-seq Methods: C57B6 mice were weaned onto a control or iron-deficient diet for 6 weeks. Hearts were removed and total mRNA was submitted for RNA-seq. Sequencing data was aligned using STAR and differetial gene expression analysis conducted in R using EdgeR and DESeq2. qRT–PCR validation for genes of interest was performed using TaqMan and SYBR Green assays. Results: We mapped about 24 million sequence reads per sample to the mouse genome (build mm10) and identified 13,590 transcripts in the hearts of control and iron-deficient mice after removing lowly expressed genes and PCR duplicates. Differential gene expression analysis showed approximately 78% downregulated and 22% upregulated genes in iron-deficiency anemia compared to controls. PCA plot showed control and iron-deficient hearts clustering in two distinct and separate clusters. Conclusions: Our study represents the first whole-transcriptomic study on cardiac samples obtained from iron-deficient and anemic mice, with biologic replicates, generated by RNA-seq technology. The RNA-seq data presented here can be used by others to explore which pathways are affected by iron-deficiency anemia
2020-12-03 | GSE162493 | GEO
Project description:Prospective study to test whether the immunochemical fecal occult blood test (FIT) for colorectal cancer (CRC) helps to prioritize patients with iron deficiency anemia for colonoscopy.
| 2216665 | ecrin-mdr-crc
Project description:The main objective of this study is to evaluate the efficacy of intravenous iron sucrose in increasing preoperative haemoglobin values in patients with colo-rectal neoplasm and iron deficiency anemia, compared to the standard treatment with oral iron. It will also determine whether intravenous iron sucrose administration improves outcomes such as postoperative haemoglobin values, serum ferritin values, transfusional needs, postoperative complications, or length of hospital stay.
| 2019445 | ecrin-mdr-crc
Project description:Since iron deficiency anemia (IDA) is one of the most common diseases in worldwide, it is an essential issue to prevent and to treat the IDA in public healthcare system. However, the precise adaptive responses and their mechanisms of the hematopoietic system induced by iron deficient state are not fully understood. In this study, low iron diet conditions which induce sever iron deficiency anemia in mice were established. Transcriptome analyses in erythroblasts under normal or iron deficient states were performed to describe the pathological details of IDA. Under iron deficient state, extensive gene expression changes and mitophagy disorder were induced during the terminal maturation of erythroblasts. These findings provide a new insight into pathophysiology and molecular biology of IDA and the function of iron as a coordinator of gene expression networks in erythrocyte maturation.
2016-12-14 | GSE77694 | GEO
Project description:The mechanism underlying thrombocytosis in patients with iron deficiency anemia remains unknown. We present findings that support the hypothesis that low iron biases the commitment of Megakaryocytic-Erythroid Progenitors (MEP) toward the megakaryocytic (Mk) lineage in mice. In MEP of Transmembrane serine protease 6 knockout (Tmprss6-/-) mice, which exhibit iron deficiency microcytic anemia concomitant with thrombocytosis, we observed a megakaryocytic (Mk) bias, decreased labile iron, and decreased proliferation relative to wild-type (WT) MEP. Bone marrow transplantation assays suggest that the systemic iron deficiency of the Tmprss6-/- recipients contributes to the MEP lineage commitment bias. Genes involved in metabolic, VEGF, and ERK pathways were enriched among those differentially expressed between WT and Tmprss6-/- MEP. Corroborating our findings from the murine model of chronic iron deficiency anemia, primary human MEP also exhibited decreased proliferation and Mk-biased commitment when their iron sensing pathways were disrupted by knockdown of Transferrin Receptor 2. These data are consistent with a model in which low iron in the marrow environment affects MEP metabolism, attenuates ERK signaling, slows proliferation, and biases MEP toward Mk lineage commitment. Keywords: megakaryocytic-erythroid progenitor (MEP), iron deficiency, Tmprss6
2023-03-17 | GSE227563 | GEO
Project description:Iron deficiency has a high prevalence in colorectal cancer patients ranging at ca. 60%. About 70% of these patients suffer from iron deficiency anemia (IDA) which adds both physical and cognitive impediments to an already straining chemotherapy. Moreover, a chronic disease like cancer often results in a reduced availability of iron for the body. In clinical practice iron substitution is usually administered orally. Due to low resorption rates, frequent gastric side effects and thus poor patient compliance a parenteral substitution seems to be a better option in terms of efficacy. In the framework of a randomized multicenter clinical trial (‘FerInject’) a comparison of efficacy parameters of parenteral vs. oral iron substitution will now be conducted in order to identify the best treatment form for clinical practice in oncology. Furthermore detailed quality of life-data (QoL) will be collected in both treatment arms for effect comparison.
| 2191960 | ecrin-mdr-crc
Project description:Iron plays the central role in the oxygen transport by the erythrocyte as a constituent of heme and hemoglobin. The importance of iron and heme also resides in their regulatory roles during erythroblast maturation. The transcription factor Bach1 may be involved in their regulatory roles since it is inactivated by direct binding of heme. To address whether Bach1 is involved in the responses of erythroblasts to iron status, low iron conditions that induced severe iron deficiency in mice were established. Under iron deficiency, extensive gene expression changes and mitophagy disorder were induced during maturation of erythroblasts. Bach1 mice showed more severe iron deficiency anemia in the developmental phase of mice and a retarded recovery once iron was replenished when compared with wild-type mice. In the absence of Bach1, the expression of globin genes and Hmox1 (encoding heme oxygenase-1) was de-repressed in erythroblasts under iron deficiency, suggesting that Bach1 represses these genes in erythroblasts under iron deficiency to balance the levels of heme and globin. Moreover, an increase in genome-wide DNA methylation was observed in erythroblasts of Bach1–/– mice under iron deficiency. These findings reveal the principle role of iron as a regulator of gene expression in erythroblast maturation and suggest that the iron-heme-Bach1 axis is important for a proper adaptation of erythroblast to iron deficiency to avoid toxic aggregates of non-heme globin.
2016-12-14 | GSE78955 | GEO
Project description:the goal of this study is to use high-throughput RNA-Sequencing technology to identify genes that are differentially expressed in iron deficient (ID) placentas compared to iron adequate (IA) placentas. A secondary aim is to explore whether iron deficiency has differential impact on male compared with female placental transcriptome.
2020-09-23 | GSE157667 | GEO
Project description:Iron (Fe) plays a pivotal role in several metabolic and biosynthetic pathways essential for plant growth. Fe deficiency in plants severely affects the overall crop yield. Despite several studies on iron deficiency responses in different plant species, these mechanisms remain unclear in the allohexaploid wheat, which is the most widely cultivated commercial crop. In order to gain a comprehensive insight into molecular responses of bread wheat when exposed to iron deficiency, we studied transcriptomic changes in the roots and flag leaves of wheat plants subjected to iron-deficient and iron-sufficient conditions during early grain filling.
2020-11-24 | GSE162027 | GEO
Project description:Iron Deficiency Triggered Transcriptome Changes in Bread Wheat
| PRJNA680330 | ENA