Aberrant Nrf2 activation delays erythroid maturation during chemotherapeutic drug-induced erythropoiesis
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ABSTRACT:
PROVIDER: PRJNA792789 | ENA |
REPOSITORIES: ENA
Dataset's files
| Action | DRS | |||
|---|---|---|---|---|
| SRR17347370_1.fastq.gz | Fastqsanger.gz | |||
| SRR17347370_2.fastq.gz | Fastqsanger.gz | |||
| SRR17347371_1.fastq.gz | Fastqsanger.gz | |||
| SRR17347371_2.fastq.gz | Fastqsanger.gz | |||
| SRR17347372_1.fastq.gz | Fastqsanger.gz |
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Project description:Nuclear factor (erythroid-derived 2)-like2 (Nrf2) and miR-144/451 regulate two well-established systems that have been identified to maintain redox homeostasis in erythroid cells by removing excess reactive oxygen species (ROS). Whether Nrf2 plays a role in the differentiation process during erythropoiesis has not been reported. In this study, we demonstrate that miR-144/451 gene knockout (KO) in mice dampens erythroid differentiation when 5-Fluorouridine is used to induce acute anemia. Surprisingly, inactivation of Nrf2 by crossing Nrf2 KO mice completely alleviates the delayed erythropoiesis in miR-144/451 KO mice. Nrf2 is a miR-144/451 target and depletion of miR-144/451 leads to the derepression of Nrf2, and thus an overexpression of Nrf2. Therefore, our findings indicate that persistent Nrf2 activation blocks erythroid maturation. We further reveal that even physiological levels of Nrf2 impair the erythroid differentiation. The underlying mechanism is that hyperactivity of Nrf2 leads to the sustained proliferation of erythroblasts partially by activation of Myc signaling. We also find that Nrf2 and miR-144/451 coordinate to scavenge ROS but do not phenotypically copy each other, indicating that they control two distinct anti-oxidant systems in erythroid cells. Furthermore, we find that miR-144/451 deficiency produces a more profound defect of erythropoiesis than dysfunctional Nrf2. Given that Nrf2 is ubiquitously expressed in tumor tissues, which facilitates cancer malignancy and chemoresistance; and that cancer is often accompanied by anemia that markedly inhibits antineoplastic treatment efficacy and anticancer immunity, our findings suggest that targeting Nrf2 holds great promise that not only harms cancer cells, but also reverses cancer-related anemia.
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Project description:Inflammation inhibits steady state erythropoiesis, while at the same time it induces stress erythropoiesis to maintain erythroid homeostasis. Stress erythropoiesis relies on the rapid expansion of early progenitors that do not differentiate until the increase in serum Epo promotes a transition in progenitors to enable their synchronous differentiation. RNA-seq analysis allows us to identify an inflammatory transcriptome signature in early progenitors that induces iNOS-derived NO production. The accumulation of NO establishes a metabolism that promotes cell proliferation while inhibiting the differentiation of early progenitors. In contrast, the transition of progenitors to differentiation is marked by the suppressed inflammatory responses and a consequent decrease of iNOS-derived NO. We show that Epo initiates this transition response by altering progenitor metabolism to support itaconate production, resulting in the activation of Nrf2 that suppresses the inflammatory responses, which in turn alleviates the NO-mediated inhibition of erythroid program. Consequent differentiation of stress erythroid progenitors generates a bolus of new erythrocytes to maintain erythroid homeostasis until steady state erythropoiesis can resume.
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Project description:We performed a proteomic analysis of human erythropoiesis using 4 umbilical cord's blood samples. This study revealed the absolute and quantitative expression of more than 6000 proteins throughout 7 stages of erythroid differentiation using a label-free technique. We found new informations on erythropoiesis such as unexpected protein expression depicted the article.
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Project description:We performed a proteomic analysis of human erythropoiesis using 4 umbilical cord's blood samples. This study revealed the absolute and quantitative expression of more than 6000 proteins throughout 7 stages of erythroid differentiation using a label-free technique. We found new informations on erythropoiesis such as unexpected protein expression depicted the article.
2016-08-08 | PXD004314 | Pride
Project description:Mammalian erythroid cells development can be divided into three period: hematopoietic stem and progenitor cells (HSPC), erythroid progenitor (Ery-Pro) and erythroid precursor (Ery-Pre). To better understand human erythropoiesis and its regulation, we performed genome-wide studies of chromatin architecture, enhancer and select transcription factors binding, and transcriptomics profiling utilizing modified strategy to obtain defined progenitor and precursor populations from primary human erythroid cells. Integration and analysis of these data reveals that the TAD structure is stable but promoter - enhancer interactions are highly dynamic in a stage specific manner. Erythroid master regulator - GATA1 involves in the P-E interactions stepwisely. GATA1 binding is largely stable in erythroid progenitor and precursor, but dynamic GATA1 binding during this process regulate a productive erythroid gene expression and local chromatin rewiring. Additionally, we also have showed that dosage of GATA1 control the erythroid progenitor behavior and the erythroid progression. The valuable chromatin architecture and epigenome data will provide more comprehensive insight of human erythropoiesis and dynamic gene regulation of cellular differentiation even more broadly.
2023-05-07 | GSE214808 | GEO
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Project description:Preeclampsia (PE) has been associated with placental dysfunction, resulting in foetal hypoxia, accelerated erythropoiesis and increased erythroblast count in the umbilical cord blood (UCB). Although the detailed effects remain unknown, placental dysfunction can also cause inflammation, nutritional and oxidative stress in the fetus that can affect erythropoiesis. Here, we compared the expression of surface adhesion molecules and erythroid differentiation capacity of UCB hematopoietic stem/ progenitor cells (HSPCs), UCB erythroid profiles along with transcriptome and proteome of these cells between male and female foetuses from PE and normotensive pregnancies. While no significant differences were observed in UCB HSPC migration/ homing and in vitro erythroid colony differentiation, the UCB HSPC transcriptome and the proteomic profile of the in vitro differentiated erythroid cells differed between PE vs normotensive samples. Accordingly, despite absence of significant differences in the UCB erythroid populations in male or female foetuses from PE or normotensive pregnancies, transcriptional changes were observed during erythropoiesis, particularly affecting male foetuses. Pathway analysis suggested deregulation in mTORC1/AMPK signaling pathways controlling cell cycle, differentiation and protein synthesis. These results associate PE with transcriptional and proteomic changes in foetal HSPCs and erythroid cells that may underlie the higher erythroblast count in the UCB in PE.
2019-06-20 | PXD010364 | Pride
Project description:Mammalian erythroid cells development can be divided into three period: hematopoietic stem and progenitor cells (HSPC), erythroid progenitor (Ery-Pro) and erythroid precursor (Ery-Pre). To better understand human erythropoiesis and its regulation, we performed genome-wide studies of chromatin architecture, enhancer and select transcription factors binding, and transcriptomics profiling utilizing modified strategy to obtain defined progenitor and precursor populations from primary human erythroid cells. Integration and analysis of these data reveals that the TAD structure is stable but promoter - enhancer interactions are highly dynamic in a stage specific manner. Erythroid master regulator - GATA1 involves in the P-E interactions stepwisely. GATA1 binding is largely stable in erythroid progenitor and precursor, but dynamic GATA1 binding during this process regulate a productive erythroid gene expression and local chromatin rewiring. Additionally, we also have showed that dosage of GATA1 control the erythroid progenitor behavior and the erythroid progression. The valuable chromatin architecture and epigenome data will provide more comprehensive insight of human erythropoiesis and dynamic gene regulation of cellular differentiation even more broadly.
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Project description:Mammalian erythroid cells development can be divided into three period: hematopoietic stem and progenitor cells (HSPC), erythroid progenitor (Ery-Pro) and erythroid precursor (Ery-Pre). To better understand human erythropoiesis and its regulation, we performed genome-wide studies of chromatin architecture, enhancer and select transcription factors binding, and transcriptomics profiling utilizing modified strategy to obtain defined progenitor and precursor populations from primary human erythroid cells. Integration and analysis of these data reveals that the TAD structure is stable but promoter - enhancer interactions are highly dynamic in a stage specific manner. Erythroid master regulator - GATA1 involves in the P-E interactions stepwisely. GATA1 binding is largely stable in erythroid progenitor and precursor, but dynamic GATA1 binding during this process regulate a productive erythroid gene expression and local chromatin rewiring. Additionally, we also have showed that dosage of GATA1 control the erythroid progenitor behavior and the erythroid progression. The valuable chromatin architecture and epigenome data will provide more comprehensive insight of human erythropoiesis and dynamic gene regulation of cellular differentiation even more broadly.
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