Renal artery stenosis (RAS) caused by narrowing of arteries is characterized by microvascular damage. Macrophages are implicated in repair and injury, but the specific populations responsible for these divergent roles have not been identified. Here, we characterized murine kidney F4/80+CD64+ macrophages in three transcriptionally unique populations. Using fate-mapping and parabiosis studies, we demonstrate that CD11b/cint are long-lived kidney-resident (KRM) while CD11chiMf, CD11cloMf are monocyte-derived macrophages. In a murine model of RAS, KRM self-renewed, while CD11chiMf and CD11cloMf increased significantly, which was associated with loss of peritubular capillaries. Replacing the native KRM with monocyte-derived KRM using bone marrow transplantation followed by RAS, amplified loss of peritubular capillaries. To further elucidate the nature of interactions between KRM and peritubular endothelial cells, we performed RNA-sequencing on flow-sorted macrophages from Sham and RAS kidneys. KRM showed a prominent activation pattern in RAS with significant enrichment in reparative pathways, like angiogenesis and wound healing. In culture, KRM increased proliferation of renal peritubular endothelial cells implying direct pro-angiogenic properties. Human homologs of KRM identified as CD11bintCD11cintCD68+ increased in post-stenotic kidney biopsies from RAS patients compared to healthy human kidneys, and inversely correlated to kidney function. Thus, KRM may play protective roles in stenotic kidney injury through expansion and upregulation of pro-angiogenic pathways Overall design: CD11chiMf Sham, n=3; CD11chiMf RAS, n=4; CD11cloMf Sham, n=3; CD11cloMf RAS, n=4; KRM Sham, n=4; KRM RAS, n=3;
Kidney-resident macrophages promote a proangiogenic environment in the normal and chronically ischemic mouse kidney.
Sex, Age, Specimen part, Cell line, Subject
View SamplesThe aim of this study is to investigate the changes of global gene expression in E. coli during a carbon source shift.
Network context and selection in the evolution to enzyme specificity.
No sample metadata fields
View SamplesTo uncover genes regulated by mTORC1 and estradiol in uterine Tsc2-null LAM like cells, we performed RNAseq on uteri from 12-week old wild-type (WT) and uterine-specific Tsc2-null (KO) mice that were either untreated (intact), oopherectomized (ovx) or oopherectomized + treated with 17ß-estradiol pellets (E2) for 8 weeks. We identified genes that were both estradiol- and TSC2-mediated. Overall design: Uterine mRNA profiles of 12 week old wild type (WT) and uterine-specific Tsc2-null (KO) mice in the presence or absence of estradiol were generated using Illumina HiSeq2500
Estrogen maintains myometrial tumors in a lymphangioleiomyomatosis model.
Age, Specimen part, Cell line, Treatment, Subject
View SamplesGlobal transcriptome patterns were performed using ORE1-IOE-2h (2h after Estradiol and Mock treatment) as well as transiently (6h) overexpressed Arabidopsis mesophyll cell protoplasts
NAC transcription factor ORE1 and senescence-induced BIFUNCTIONAL NUCLEASE1 (BFN1) constitute a regulatory cascade in Arabidopsis.
Specimen part, Treatment
View SamplesPDE4 inhibitors, which activate cAMP signaling by reducing cAMP catabolism, are known to induce apoptosis in B lineage chronic lymphocytic leukemia (CLL) cells but not normal human T cells. The explanation for such differential sensitivity remains unknown. Here, we report studies contrasting the response to PDE4 inhibitor treatment in CLL cells and normal human T and B cells.
Chronic lymphocytic leukemia and B and T cells differ in their response to cyclic nucleotide phosphodiesterase inhibitors.
No sample metadata fields
View SamplesLong-term pharmacological glucocorticoid therapy causes atrophy and hypofunction of the adrenal cortex. Following glucocorticoids withdrawal, a functional and anatomic regeneration take place, whose cellular and molecular mechanisms are poorly understood
Sonic Hedgehog and WNT Signaling Promote Adrenal Gland Regeneration in Male Mice.
Age, Specimen part
View SamplesThe goal of this study is to compare the transcriptome of the 2 MVT1 subpopulations in order to identify new genes and pathways that stands beyond the CD24+ aggressive phenotype Overall design: mRNA profiles of CD24- and CD24+ cells were generated by deep sequencing, in triplicate, using Illumina HiSeq 2500
Deep sequencing of mRNA in CD24(-) and CD24(+) mammary carcinoma Mvt1 cell line.
No sample metadata fields
View SamplesGenome instability is a potential limitation to the research and therapeutic application of induced pluripotent stem cells (iPSCs). Observed genomic variations reflect the combined activities of DNA damage, cellular DNA damage response (DDR), and selection pressure in culture. To understand the contribution of DDR on the distribution of copy number variations (CNVs) in iPSCs, we mapped CNVs of iPSCs with mutations in the central DDR gene ATM onto genome organization landscapes defined by genome-wide replication timing profiles. We show that following reprogramming the early and late replicating genome is differentially affected by CNVs in ATM deficient iPSCs relative to wild type iPSCs. Specifically, the early replicating regions had increased CNV losses during retroviral reprogramming. This differential CNV distribution was not present after later passage or after episomal reprogramming. Comparison of different reprogramming methods in the setting of defective DNA damage response reveals unique vulnerability of early replicating open chromatin to retroviral vectors.
Influence of ATM-Mediated DNA Damage Response on Genomic Variation in Human Induced Pluripotent Stem Cells.
Specimen part
View SamplesWe report the correlation between lung-derived neonatal MSCs and 2 clinical variables among preterm newborns: corrected gestational age (CGA) at collection and the severity of bronchopulmonary dysplasia (BPD) Overall design: To test the correlation between the transcriptional profiles of tracheal aspirate-derived mesenchymal stromal cells with late stage lung development and with bronchopulmonary dysplasia.
Lung-Resident Mesenchymal Stromal Cells Reveal Transcriptional Dynamics of Lung Development in Preterm Infants.
Specimen part, Subject
View SamplesThis SuperSeries is composed of the SubSeries listed below.
The distribution of genomic variations in human iPSCs is related to replication-timing reorganization during reprogramming.
Sex, Age, Specimen part, Disease, Disease stage, Subject, Time
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