Chemo-resistance to platinum such as cisplatin is critical in the treatment of ovarian cancer. Recent evidences have linked epithelial-mesenchymal transition (EMT) with the drug resistance as a contributing mechanism. The current study explored the connection between cellular responses to cisplatin with EMT in ovarian cancer.
Epithelial-mesenchymal status renders differential responses to cisplatin in ovarian cancer.
Specimen part, Cell line, Treatment
View SamplesThe Gata2 transcription factor is a pivotal regulator of hematopoietic stem cell (HSC) development and maintenance. Gata2 functions in the embryo during endothelial cell to hematopoietic cell transition (EHT) to affect hematopoietic cluster, HPC and HSC formation. Although previous studies of cell populations phenotypically enriched in HPCs and HSCs show expression of Gata2, there has been no direct study of Gata2 expressing cells during normal hematopoiesis. In this study we generate a Gata2 Venus reporter mouse model with unperturbed Gata2 expression to examine the hematopoietic function and transcriptome of Gata2 expressing and nonexpressing cells. Overall design: Gata2Venus- HPCs 1 replicate, Gata2Venus+ HPCs 1 replicate
Functional and molecular characterization of mouse Gata2-independent hematopoietic progenitors.
Specimen part, Cell line, Subject
View SamplesEndothelial cells (Ecs) lining the blood vessels have been known to have a variety of functions and play a central role in homeostasis of the circulatory system.
Transcription profiles of endothelial cells in the rat ductus arteriosus during a perinatal period.
Specimen part
View SamplesHematopoietic stem cells (HSCs) are generated via a natural transdifferentiation process known as endothelial-to-hematopoietic cell transition (EHT). Due to small numbers of embryonal arterial cells undergoing EHT and the paucity of markers to enrich for hemogenic endothelial cells, the genetic program driving HSC emergence is largely unknown. Here, we use a highly sensitive RNAseq method to examine the whole transcriptome of small numbers of enriched aortic HSCs (CD31+cKit+Ly6aGFP+), hemogenic endothelial cells (CD31+cKit-Ly6aGFP+) and endothelial cells (CD31+cKit-Ly6aGFP-). Overall design: Comparison of mRNA profiles of endothelial cells, hemogenic endothelial cells, and hematopoietic stem cells generated by deep-sequencing of sorted populations from pool of embryos, in triplicate.
Whole-transcriptome analysis of endothelial to hematopoietic stem cell transition reveals a requirement for Gpr56 in HSC generation.
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View SamplesThe root tip of rice before or after Al stress have been used. And some gense were regulated in this stress.
Transcription factor WRKY22 promotes aluminum tolerance via activation of OsFRDL4 expression and enhancement of citrate secretion in rice (Oryza sativa).
Specimen part
View SamplesWe report the application of single-nucleus-based sequencing technology for high-throughput profiling of transcriptome in immortazalized human myoblast KD3. By obtaining over sixty billion bases of sequence from mRNA, we generated comprehensive transcriptome profiles from KD3 undifferentiated myoblast and differentiated multi-nucleated myotube and mono-nucleated cells. We find that the data from single-nucleus RNA-seq is consistent with the transcriptome from single-cell RNA-seq. The pri-mRNA expression characterized by single-nucleus RNA-seq can reflect the actual miRNA level in the whole cell. Overall design: Examination of transcriptome in 1 cell type in 3 differential stages.
Single-nucleus RNA-seq of differentiating human myoblasts reveals the extent of fate heterogeneity.
Subject
View SamplesFus is the gene for a member of the FET family of RNA-binding proteins often involved in chromosomal translocations to generate oncogenic fusion genes in human cancers. Fus participates in multiple cellular functions, including RNA processing and transport, transcriptional regulation, and genome integrity. We uncovered its critical role in the maintenance of hematopoietic stem cells (HSCs). Fus-/- fetal livers developed normally except for a mild reduction in numbers of colony-forming cells compared to the wild type. The proliferation and differentiation of Fus-/- hematopoietic progenitors were normal in vitro. However, the number of colony-forming cells present in long-term cocultures of Fus-/- hematopoietic progenitors and stromal cells was significantly reduced. Fus-/- HSCs had an impaired long-term repopulating capacity and failed to repopulate in tertiary recipient mice. Fus-/- HSCs were highly susceptible to radiation both in vitro and in vivo and showed retardation of radiation-induced DNA damage repair. These findings define Fus as a novel regulator of HSCs and implicate it in stress-resistance and maintenance of the genomic integrity of HSCs. Therefore, it would be of importance to analyze the gene expression profiles of Fus-knockout hematopoietic stem/progenitor cells to understand its role in HSCs.
FET family proto-oncogene Fus contributes to self-renewal of hematopoietic stem cells.
Specimen part
View SamplesObjective: Adult Stills disease (ASD) is a systemic disorder of unknown etiology characterized by high spiking fever, rash and arthritis. The purpose of this study was to determine the pathogenic roles of specific genes in ASD. Methods: Differentially expressed genes (DEGs) were examined by DNA microarray and validated by quantitative PCR using monocytes isolated from patients with active-ASD, inactive-ASD and healthy controls. The correlation between validated DEGs and ASD activity was analyzed. After inflammasome activation with LPS and Nigericin, the production of IL-1, IL-18, inflammasome and autophagy related proteins in DEGs-overexpressing THP-1 cells was carried out by ELISA or western blotting. DEGs-overexpressing THP-1 cells were treated with an inhibitor of autophagy followed by assessment of IL-1 and IL-18 production by ELISA and western blotting method.Conclusions: The overexpression of PLAC8 in monocytes might play a regulatory role in the production of IL-1 and IL-18 by the enhancement of autophagy, resulting in the suppression of ASD. Results:A total of 68 genes were highly expressed in monocytes isolated from active-ASD patients, relative to their expression in inactive-ASD patients and healthy controls. After validation of expression of 13 genes (CLU, FCGR1B, PLAC8, TLR1, S100A12, CD55, PIM1, BCL2A1, SOD2, PLSCR1, CYP1B1, STEAP4, IL1RN), the expression of PLAC8 was significantly higher in active-ASD patients than the other groups. In ASD, PLAC8 expression level correlated with serum levels of CRP, ferritin and IL-18. Stimulation of monocytes with lipopolysaccharide resulted in PLAC8 upregulation. LPS or Nigericin stimulation of PLAC8-overexpressing THP-1, but not THP-1 cells< was associated with significant decrease in IL-1 and IL-18 production. PLAC8 overexpressing in THP-1 cells was associated with enhanced autophagy and suppression of IL-1 and IL-18 production. Conclusions: PLAC8 upregulation in monocytes seemed to play a regulatory role in the production of IL-1 and IL-18 through enhanced autophagy, resulting in suppression of ASD. The results highlight the role of PLAC8 in the pathogenesis of ASD and suggest its potential suitability as a therapeutic target in ASD.
Placenta Specific 8 Suppresses IL-18 Production through Regulation of Autophagy and Is Associated with Adult Still Disease.
Sex, Age, Specimen part, Disease, Disease stage
View SamplesCancer cells have wide variety of gene expression profile. The objective of the study is to reveal the cancer-associated gene expression profile.
Gene expression signatures for identifying diffuse-type gastric cancer associated with epithelial-mesenchymal transition.
Specimen part
View SamplesThe aim of this study is to investigate the gene expression profiles during masculinization of neonatal female mice brain by exogenous androgen treatment.
Gene expression profile of the neonatal female mouse brain after administration of testosterone propionate.
Sex, Specimen part, Treatment
View Samples