MiRNA sequencing revealed differentially expressed exosomes miRNAs in PDE of patients with peritoneal ultrafiltration failure
Ontology highlight
ABSTRACT:
PROVIDER: PRJNA757643 | ENA |
REPOSITORIES: ENA
Dataset's files
| Action | DRS | |||
|---|---|---|---|---|
| SRR15607233.fastq.gz | Fastqsanger.gz | |||
| SRR15607234.fastq.gz | Fastqsanger.gz | |||
| SRR15607235.fastq.gz | Fastqsanger.gz | |||
| SRR15607236.fastq.gz | Fastqsanger.gz | |||
| SRR15607237.fastq.gz | Fastqsanger.gz |
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Project description:There are differential expressions of exosomal miRNAs in PDE of patients with peritoneal ultrafiltration failure. It may be related to the occurrence of peritoneal ultrafiltration failure by regulating the process of peritoneal fibrosis such as inflammation, angiogenesis, and EMT.
2021-08-27 | GSE182736 | GEO
Project description:Chronic exposure to biological incompatibility of peritoneal dialysis solution is one of the principal causes of ultrafiltration failure (UF). However, the changes of peritoneal cell composition and molecular mechanism of peritoneal microenvironment after long-term PD are unclear. Single-cell RNA sequencing was performed to profile cell composition and transcriptome characteristics in effluent obtained from patients undergoing PD with short vintage (SV), long vintage without ultrafiltration failure (LV_NOT_UF), and long vintage with ultrafiltration failure (LV_UF). A total of 6 SV patients, 6 LV_NOT_UF patients, and 4 LV_UF patients were enrolled. The median PD duration of the three groups were 5 months (range:1.0–6.0 months), 137 months (range: 92–189 months) and 132 months (range: 120–161 months), with no significant differences in age (38.3 ± 21.5 years, 45.7 ± 10.6 years and 41.0 ± 16.7 years, P>0.05) and gender (male%: 33.3%, 50.0% and 25.0%, P>0.05). scRNA-seq data annotated 8 main cell types including epithelial-like mesothelial cells (E-MCs), mesenchymal-like mesothelial cells (M-MCs), fibroblast, plasma B cells, conventional dendritic cells, plasmacytoid dendritic cells, natural killer T cells, and myeloid cells. LV_UF patients showed higher proportion of E-MCs, which exhibited activated autophagy and had properties of both anti-inflammatory and pro-inflammatory, and neutrophil- and autophagy-related DEGs of E-MCs were upregulated in the LV_UF group. In contrast, the M-MCs and the AQP1 expression in the peritoneal mesenchyme were reduced in the LV_UF group compared to the other groups. The neutrophils in PD effluent were elevated in the LV_UF group, while the M2-like MRC1-macrophages gradually decreased from the SV, LV_NOT_UF to LV_UF group. Compared with the LV_NOT_UF group, the upregulated DEGs of monocytes/macrophages in the LV_UF group not only involved in pro-inflammatory response, but also promoted EMT progress. Additionally, neutrophils and monocytes/macrophages both interacted with MCs. Our study uncovers peritoneal different individual cell populations and cellular functions in different stages of PD which indicates the dynamic changes of microenvironments of peritoneal membrane. These findings provide new insights into the novel roles of mesothelial cells and inflammatory cells in UF.
2023-11-27 | GSE248762 | GEO
Project description:Peritoneal dialysis (PD) is a widely used kidney replacement therapy for patients with end-stage kidney disease. Nevertheless, long-term exposure to PD fluid can damage the peritoneal membrane, leading to ultrafiltration failure and, ultimately, discontinuation of PD. Investigation of the molecular mechanisms underlying this damage is essential for identifying new therapeutic targets to mitigate peritoneal deterioration in PD patients. To this end, we employed RNA sequencing in a preclinical model of peritoneal injury, induced by prolonged chlorhexidine (CHX) exposure, which revealed cytosolic DNA-sensing signaling as a novel pathway. Next, we demonstrated that key players in this pathway, such as the stimulator of interferon genes (STING) and its downstream signaling effectors (interferon regulatory factor 3, interferon-stimulated genes, and nuclear factor-κB signaling), were upregulated in experimental peritoneal damage. Moreover, increased STING expression was observed in human peritoneal biopsies from patients with PD. Subsequent studies in STING-deficient mice showed reduced proinflammatory gene expression and immune cell infiltration, together with inhibited nuclear factor-κB pathway activation at both early (10 days) and late (30 days) stages of CHX-induced peritoneal injury. STING deficiency also reduced peritoneal membrane thickening, fibrosis, and mesothelial-to-mesenchymal transition (MMT)-related changes in advanced CHX-induced damage. Furthermore, pharmacological inhibition of STING with C-176 attenuated CHX-induced peritoneal inflammation. Macrophages were identified as one of the STING-expressing cell types in the injured peritoneum. Hence, in vitro STING blockade in activated macrophages inhibited MMT in cultured mesothelial cells, suggesting that STING activation in this population may drive peritoneal fibrosis. Additionally, STING deficiency reduced peritoneal inflammation in S. epidermidis-induced peritonitis and decreased adhesion scores in a postsurgical intra-abdominal adhesion model. These findings identify STING as a pivotal mediator of peritoneal injury and support its potential as a novel therapeutic target to prevent PD-associated ultrafiltration failure. © 2025 The Author(s). The Journal of Pathology published by John Wiley & Sons Ltd on behalf of The Pathological Society of Great Britain and Ireland.
2024-11-25 | GSE282440 | GEO
Project description:Peritoneal fibrosis is a major complication of long-term peritoneal dialysis (PD), leading to ultrafiltration failure and sometimes life threatening encapsulating peritoneal sclerosis. Fibrosis is driven by activated myofibroblasts that are derived, in part, from mesothelial-to-mesenchymal transition (MMT). We aimed to discover novel mediators of MMT and then experimentally exploit them to prevent peritoneal fibrosis. Using an antibody to HBME-1 and streptavidin nanobead technology, we first pioneered a novel method to purify rat mesothelial cells. After exposing mesothelial cells to transforming growth factor β1 (TGFβ1), we undertook RNAseq whole transcriptome analyses and outlined, the expression profile of sorted mesothelial cells at pre- and post- MMT.
2018-06-18 | E-MTAB-5998 | biostudies-arrayexpress
Project description:Proteomics-based analysis of Peritoneal Dialysis Effluent is a relatively new approach to studying the changes associated with PD. Recent studies have shown altered proteomic profiles in various conditions of PD patients, including uremia, diabetes, peritonitis, abnormal peritoneal transport function and with different peritoneal dialysis modality. However, these studies extracted proteins in PDE by precipitation techniques resulting in high abundant diffusible proteins from blood circulation which interfered with the identification of low abundant, locally secreted, yet important, biomarkers. we hypothesize that EVs are secreted from peritoneal resident cells and contain known biomarkers for PDE-related membrane injury. As a proof of concept, here we identified and characterized EVs from PDE of healthy PD patients using transmission electron microscopy (TEM), dynamic light scattering (DLS), and nanoparticle tracking analysis (NTA). Furthermore, we did proteomics and bioinformatics analyses to determine the number and type of proteins measurable within EVs isolated from the PDE using two methods of vesicle isolation.
2018-08-14 | PXD006371 | Pride
Project description:Peritoneal dialysis (PD) is the worldwide recognized preferred dialysis treatment for children affected by end-stage kidney disease (ESKD). However, due to the unphysiological composition of PD fluids, the peritoneal membrane (PM) of these patients may undergo structural and functional alterations, which may cause fibrosis. Several factors may accelerate this process and primary kidney disease may have a causative role. In particular, patients affected by corticoresistant primary focal segmental glomerulosclerosis), a rare glomerular disease leading to nephrotic syndrome and ESKD, seem more prone to develop peritoneal fibrosis. The mechanism causing this predisposition is still unrecognized. To better define this condition, we carried out, for the first time, a new comprehensive comparative proteomic mass spectrometry analysis of mesothelial exosomes from peritoneal dialysis effluent (PDE) of 6 pediatric patients with focal segmental glomerular sclerosis (FSGS) versus 6 patients affected by other primary renal diseases (No FSGS). Our omic study demonstrated that, despite the high overlap in the protein milieu between the two study groups, machine learning allowed a complete distinction of the whole proteomic exosome mesothelial content of FSGS versus No FSGS (with 100% accuracy). Out of the 2490 identified proteins, 40% (995) were involved in epithelial-mesenchymal transition (EMT)/fibrosis and in the transforming growth factor-β pathway. Additionally, the Weight Gene Co-expression Network Analysis algorithm identified that some of the discriminative proteins (TIMP1, CTHRC1, SPARC, CHMP4B, COL5A2, ANXA13, FNC2 and CENP-E) were also highly correlated to PD vintage, fibrosis, EMT and non-neoplastic PM disease. All together our data demonstrated that mesothelial cells of FSGS patients are more prone to activate a pro-fibrotic machinery with exosomes having a primary role in this process. Moreover, they indicated that identified FSGS-associated elements in mesothelial exosome protein could be employed as potential new biomarkers of mesothelial integrity. Finally, our results highlighted that in FSGS patients particular attention should be paid to use more biocompatible dialysis solution, reduce the length of time on PD and personalize PD regimens to minimize the risk of rapid loss of PM function or development of encapsulating peritoneal sclerosis.
2022-02-17 | PXD024556 | Pride
Project description:Peritoneal dialysis (PD) is a successful renal replacement therapy for end-stage renal disease that effectively improves the quality of life. Long-term PD causes epithelial mesenchymal transformation (MMT) of peritoneal mesothelial cells, leading to peritoneal fibrosis which reduces the efficiency of PD. Macrophages are considered players in the onset and perpetuation of peritoneal injury. Yet, the mechanisms employed by macrophage-mesothelial cells communication to regulate peritoneal fibrosis are not fully elucidated resulting in lack of disease-modified drugs. This study analyzes the role of macrophage-mesothelial cell communication by intraperitoneal injection of macrophage derived exosomes in PD model rats. These results show that macrophages secrete exosomal miR-204-5p that directly targets Foxc1, leading to the activation of MMT in mesothelial cells. The data also shows that intraperitoneal injection of dissolved AS-IV can improve MMT by altering macrophage derived exosomal miRNAs. This study indicates that intercellular crosstalk between peritoneal macrophages and mesothelial cells is mediated by macrophage derived miR-204-5p-containing exosomes that control the MMT progression, providing AS-IV for prevention and treatment of PD induced peritoneal fibrosis. Our results demonstrate, for the first time, a novel role of the AS-IV on miR-204-5p/Foxc1/β-catenin axis in improving peritoneal fibrosis in vivo and vitro.
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Project description:Peritoneal dialysis (PD) is a modality of renal replacement therapy in which the high volumes of available PD effluent (PDE) represents a rich source of biomarkers for monitoring disease and therapy. Although this information could help guiding the management of PD patients, little is known about the potential of PDE to define pathomechanism-associated molecular signatures in PD. Here we present the utilization of a high-performance multiplex proteomics approach based on depletion of highly abundant plasma proteins and enrichment of low abundance proteins and quantitation using a combination of label-free and isobaric labeling strategies for PDE samples from PD patients (n=20), who received either standard PD fluid or a novel PD fluid (added alanyl-glutamine (AlaGln)) in an open-label, randomized, two-period, cross-over clinical trial.
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Project description:Foxp3+ regulatory T (Treg) cells prevent inflammatory disease but the mechanistic basis of suppression is not understood completely . Gene silencing by RNA interference can act in a cell-autonomous and non-cell-autonomous manner, providing mechanisms of inter-cellular regulation. Here, we demonstrate that non-cell-autonomous gene silencing, mediated by miRNA-containing exosomes, is a mechanism employed by Treg cells to suppress T cell-mediated disease. Treg cells transferred microRNAs (miRNA) to various immune cells, including T helper 1 (Th1) cells, suppressing Th1 cell proliferation and cytokine secretion. Use of Dicer-deficient or Rab27a and Rab27b double-deficient Treg cells to disrupt miRNA-biogenesis or the exosomal pathway, respectively, established a requirement for miRNAs and exosomes for Treg cell-mediated suppression. Transcriptional analysis and miRNA inhibitor studies showed that exosome-mediated transfer of Let-7d from Treg cell to Th1 cells contributed to suppression and prevention of systemic disease. These studies reveal a mechanism of Treg cell-mediated suppression mediated by miRNA-containing exosomes. Regulatory T cells (CD4+CD25hiFoxp3rfp+, Treg) were isolated from naive mice. RNA as extracted form some Treg cells, while others were cultured in complete IMDM media for 3 days, stimulated with anti-CD3 anti-CD3 (1ug/ml) and anti-CD28 (10ug/ml). Exosomes were recovered from Treg cell supernatant, as described, and RNA was extracted form the purified exosomes. To identify which miRNAs were transferred to Dicer-deficient (KO) cells from Treg cells, we cultured Dicer KO cells alone, or co-cultured Dicer KO cells with Treg cells. RNA was extracted form Dicer KO cells cultured alone or from Dicer KO cells cultured in the presence of Treg cells. 3 x biological replicates were used. Each biological replicate was derived from a pool of 3-5 samples.
2014-08-27 | E-GEOD-60615 | biostudies-arrayexpress