M2-like macrophages in the injured-kidney cortex promoted kidney cancer progression via the direct pro-tumor effect and the inhibition of CD8 T cell infiltration
Ontology highlight
ABSTRACT:
PROVIDER: PRJNA810701 | ENA |
REPOSITORIES: ENA
Dataset's files
| Action | DRS | |||
|---|---|---|---|---|
| SRR18150527_1.fastq.gz | Fastqsanger.gz | |||
| SRR18150527_2.fastq.gz | Fastqsanger.gz | |||
| SRR18150528_1.fastq.gz | Fastqsanger.gz | |||
| SRR18150528_2.fastq.gz | Fastqsanger.gz | |||
| SRR18150529_1.fastq.gz | Fastqsanger.gz |
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Project description:In this study, we aimed to evaluate the effect of M2-like macrophages in the injured kidney on kidney cancer progression. As an acute kidney injury to chronic kidney disease model, we used unilateral ischemia-reperfusion injury (uIRI). And we inoculated RenCa cells, which are murine kidney cancer cell line, into renal subcapsule 14 days after uIRI (uIRI-Can) and compared uIRI-Can to RenCa cells inoculated into sham-operated renal subcapsule (Sham-Can) 20 days after inoculation. To identify gene characteristics of M2-like macrophages that are commonly detected both in the uIRI kidney cortex and uIRI-Can, we sorted Ly6Clow macrophages from 4 groups, uIRI kidney cortex, sham kidney cortex, uIRI-Can, and Sham-Can, and conducted RNA-Seq. This study revealed the characteristic gene expression of M2-like macrophages which were commonly detected in the injured kidney cortex and kidney cancer progressed on the injured kidney. And this could be a future therapeutic target of macrophage-targeted therapy.
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Project description:Renal recovery following injury relies on cellular regeneration. In the mouse kidney following injury, injured epithelial cells undergoes de-differentiate, proliferate and re-differentiate into functional cells, following a a tightly controlled genetic programme where specific sets of genes are up-regulated. We used microarrays to detail the global programme of gene expression underlying cellular regeneration following injury with or without a HDAC inhibitor, m4PTB, treatment and identified distinct classes of up-regulated genes during this process.
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Project description:Renal recovery following injury relies on cellular regeneration. In the mouse kidney following injury, injured epithelial cells undergoes de-differentiate, proliferate and re-differentiate into functional cells, following a a tightly controlled genetic programme where specific sets of genes are up-regulated. We used microarrays to detail the global programme of gene expression underlying cellular regeneration following injury with or without a HDAC inhibitor, m4PTB, treatment and identified distinct classes of up-regulated genes during this process. Male BALB/c mice underwent 26 minute unilateral ischemia-reperfusion (IR) with contralateral nephrectomy treated with vehicle or 100 mg/kg m4PTB 24 h after inducing renal injury, and kidneys harvested for RNA extraction 12 h later. We sought to obtain kidneys within a similar degree of injury in order to carefully evaluate the effect of m4PTB on expression profiles. To that end, we selected kidneys according to three different criteria of injury: (1) level of serum creatinine at Day1, (2) the level of blood urea nitrogen (BUN) (3) Kim1 expression by qPCR at Day1.5 using haevested kidneys
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Project description:Humoral factors that prompt fibroblasts to migrate to an injury site at an appropriate time point are deemed indispensable for repair after kidney injury. We herein demonstrated the pivotal roles for of injured tubule-derived Cellular Communication Network Factor 1 (CCN1) in the mobilization of fibroblasts to the injury site after kidney injury. Based on analyses of ligand-receptor interactions in vitro and tubular epithelial-specific transcriptomics in vivo, we identified the up-regulation of CCN1 during the early phases of kidney injury. CCN1 promotes fibroblast chemotaxis through focal adhesion kinase-ERK signaling. In vivo analyses utilizing tubular-specific CCN1 knockout mice demonstrated the sparse accumulation of fibroblasts around injured sites after injury, resulting that tissue fibrosis was ameliorated in CCN1-KO mice. These results reveal an epithelial - fibroblast CCN1 signaling axis that mobilizes fibroblasts to injured tubule early after acute injury but that promotes interstitial fibrosis at late timepoints.
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Project description:Excessive renal fibrosis is a common pathology in progressive chronic kidney diseases. Inflammatory injury and aberrant repair processes contribute to the development of kidney fibrosis. Myeloid cells, particularly monocytes/macrophages, play a crucial role in kidney fibrosis by releasing their proinflammatory cytokines and extracellular matrix components such as collagen and fibronectin into the microenvironment of the injured kidney. Numerous signaling pathways have been identified in relation to these activities. However, the involvement of metabolic pathways in myeloid cell functions during the development of renal fibrosis remains understudied. In our study, we initially reanalyzed single-cell RNA sequencing data of renal myeloid cells from Dr. Denby’s group and observed an increased glycolytic pathway in myeloid cells that are critical for renal inflammation and fibrosis. To investigate the role of myeloid glycolysis in renal fibrosis, we utilized a model of unilateral ureteral obstruction in mice deficient of Pfkfb3, an activator of glycolysis, in myeloid cells (Pfkfb3ΔMϕ) and their wild type littermates (Pfkfb3WT). We observed a significant reduction in fibrosis in the obstructive kidneys of Pfkfb3ΔMϕ mice compared to Pfkfb3WT mice. This was accompanied by a substantial decrease in myeloid cell infiltration, as well as a decrease in the numbers of M1 and M2 macrophages and suppression of macrophage to obtain myofibroblast phenotype in the obstructive kidneys of Pfkfb3ΔMϕ mice. Mechanistic studies indicate that glycolytic metabolites stabilize HIF1α, leading to alterations in macrophage phenotypes that contribute to renal fibrosis. In conclusion, our study implicates that targeting myeloid glycolysis represents a novel approach to inhibit renal fibrosis.
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