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Gene Expression Profiling of HEMGN-/- and WT HSPCs sorted from primary recipients 6h after transplantation (early homing cells)

ABSTRACT: To clarify the mechanism through which HEMGN (also known as EDAG in human) controls the survival and functions of hematopoietic stem and progenitor cells (HSPCs) under transplantation stress, we compared the transcriptome of Hemgn-/- and WT HSPCs isolated from primary recipients 6h after transplantation by RNA sequencing (RNA-Seq).

ORGANISM(S): Mus musculus

PROVIDER: GSE146949 | GEO | 2021/11/22

REPOSITORIES: GEO

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Gene Expression Profiling of HEMGN-/- and WT HSPCs sorted from primary recipients 6h after transplantation (early homing cells)

Project description:Gene Expression Profiling of HEMGN-/- and WT HSPCs sorted from primary recipients 6h after transplantation (early homing cells)

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Characterization of Human Pegivirus Infection in Liver Transplantation Recipients

Project description:Approximately 2% of heathy persons are infected with human pegivirus (HPgV). HPgV is transmitted via vertical, sexual, and blood-borne routes. Recently, the association of HPgV infection with the risk of lymphoma was reported. We examined the prevalence of chronic HPgV infection in liver transplantation (LT) recipients and hepatectomy patients and the influence of HPgV infection after LT on clinical and perioperative factors. We enrolled 313 LT recipients and 187 hepatectomy patients who received care at the Kyusyu University Hospital between May 1997 and September 2017. Total RNA was extracted from peripheral blood samples of patients/recipients collected postoperatively. HPgV RNA was measured using real-time polymerase chain reaction (RT-PCR). Of the 313 recipients and 187 patients enrolled in this study, 44 recipients (14.1%) and two patients (1.1%) had HPgV viremia. There was no significant association between HPgV infection and LT outcomes. Interestingly, one recipient was infected with HPgV during the peritransplant period, which was likely transmitted via blood transfusion as HPgV RNA was detected from the blood bag transfused to the recipient during LT. Additionally, HPgV infection induced the upregulation of interferon stimulated gene (ISG) expression in peripheral blood mononuclear cells (PBMCs). LT recipients had higher HPgV viremia compared to hepatectomy patients. Although HPgV infection was not associated with LT-related outcomes, it induced ISG expression in recipients.

2019-07-28 | GSE131504 | GEO

Characterization of Human Pegivirus Infection in Liver Transplantation Recipients

Project description:Characterization of Human Pegivirus Infection in Liver Transplantation Recipients

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Mesenchymal stromal cells improve the transplantation outcome of CRISPR-Cas9 gene-edited human HSPCs (NHEJ)

Project description:Mesenchymal Stromal Cells (MSCs) have been employed in vitro to support HSPC expansion and in vivo to promote Hematopoietic Stem and Progenitor Cells (HSPCs) engraftment. Based on these studies, we developed an MSC-based co-culture system to optimize transplantation outcome of CRISPR-Cas9 gene-edited (GE) human HSPCs. We show that bone marrow (BM)-MSCs produce several hematopoietic supportive and anti-inflammatory factors capable to alleviate the proliferation arrest and mitigate the apoptotic and inflammatory programs activated in GE-HSPCs, improving their expansion and clonogenic potential in vitro. The use of BM-MSCs resulted in superior human engraftment and increased clonal output of GE-HSPCs contributing to the early phase of hematological reconstitution in the peripheral blood of transplanted mice. In conclusion, our work poses the biological bases for a novel clinical use of BM-MSCs to promote engraftment of GE-HSPCs and improve their transplantation outcome.

2022-09-01 | GSE206902 | GEO

Mesenchymal stromal cells improve the transplantation outcome of CRISPR-Cas9 gene-edited human HSPCs (RNA-seq)

2022-09-01 | GSE168834 | GEO

Mesenchymal stromal cells improve the transplantation outcome of CRISPR-Cas9 gene-edited human HSPCs (BAR-Seq)

2022-09-01 | GSE206900 | GEO

Pre-Transplant recipients’ clinical and immunological features are independently associated with the development of delayed graft function in kidney transplantation

Project description:Delayed graft function (DGF) is associated with a reduced graft survival. Donors' features have been always considered as key pathogenic factors in this setting. The aim of our study was to evaluate the role of recipients' characteristics in the development of DGF. We prospectively enrolled 932 kidney graft recipients from 466 donors. A total of 226 recipients experienced DGF. Among the 466 donors, in 290 both recipients presented with early graft function (EGF, group A), in 50 both recipients experienced DGF (group B) and in 126 one recipient presented with DGF and the other with EGF (group C). In group C we randomly selected 7 couples of DGF/EGF recipients. In these patients, circulating mononuclear cells were harvested before transplantation and their transcriptomic profile was investigated by a microarray approach. Results were validated by qPCR in an independent group of EGF/DGF couples.

2022-12-22 | E-MTAB-10747 | biostudies-arrayexpress

Post-transplant diabetes mellitus after kidney transplantation

Project description:Diabetes mellitus (DM) after transplantation remains a crucial clinical problem in kidney transplantation. To obtain insights into molecular mechanisms underlying the development of post-transplant diabetes mellitus (PTDM) and its early impact on glomerular structures, here we comparatively analyze the proteome of histologically normal appearing glomeruli from patients with PTDM from normoglycemic (NG) transplant recipients, and from recipients with pre-existing type 2 DM (PTDM)

2023-10-24 | PXD042188 | Pride

Intrahepatic immune microenvironment contributes to spontaneous tolerance in pediatric liver transplantation recipients

Project description:We carried out a cross-sectional study using clinical data and biospecimens to analyze factors that were associated with immune tolerance after pediatric liver transplantation. Multivariable analysis revealed that peripheral Treg ratio (OR=2.48 (1.55-19.8), p=0.032) and maximum blood EBV-DNA copy (OR=5.53 (1.08-5.67), p=0.008) were associated with the development of tolerance during follow-up, while serum IGM titer (OR=0.73 (0.53-0.99), p=0.046) had a negative relation with tolerance. Histological evaluation indicated no difference on hepatocyte damage, portal inflammation and fibrosis stage between tolerant and non-tolerant recipients. Meanwhile, no deterioration of hepatic pathology was found in recipients with longer follow-up time. Further allograft biopsy transcriptome analysis exhibited distinguished intrahepatic expression patterns between tolerant and non-tolerant recipients. Tolerant allografts were characterized by low expression of cytotoxic and inflammatory genes (like NDUFAF2, MAN1A2, PLEK2, NUDFB4 and FCER1G) and high levels of immune regulatory ones (like SCRIB, MAPK8IP3, TSC2, CHRNA4 and D2HGDH). Especially, immunohistology staining confirmed the upregulated expression of CD39 (ENTPD1) and CD73 (NT5E) in liver sinusoidal endothelial cells and hepatocytes from tolerant allograft, which was associated with increased CD4+ Treg ratio in portal areas.

2024-05-01 | GSE242205 | GEO

Transcriptome patterns for Acute Cellular Rejection in Recipients with Recurrent Hepatitis C after Liver Transplantation

Project description:The histological evaluation of liver via biopsy remains as the standard for the diagnosis of both acute cellular rejection (ACR) and recurrent hepatitis C (RHC) after liver transplantation. Nevertheless, it is often difficult to diagnose ACR in HCV-positive recipients because of common co-existing and overlapping morphological changes with RHC. The aim of the study was to identify potential target genes for ACR in recipients with RHC. We analyzed 22 liver biopsy samples obtained from 21 HCV-positive recipients. The clinicopathological diagnoses for the biopsies were ACR-predominant with superimposed RHC in 9 samples (ACR group) and RHC with no ACR (non-ACR group) in the remaining. We compared the transcriptional alterations between the two groups with oligonucleotide microarray and selected 2206 genes which were significantly modulated in ACR. Subsequently we analyzed the regulatory networks in ACR using Ingenuity Pathway Analysis, and focused on 5 genes (IFNAR1, IL-12RB2, NFATC3, BMP2, and CASP8) from the core network as the target genes for ACR. In conclusion, our results demonstrated that novel transcriptome patterns of ACR and concurrent RHC were present and distinct from recipients with only RHC, suggesting that gene expression profiling may have a role in the diagnosis of ACR in recipients with hepatitis C. Keywords: Gene identification in ACR with recurrent HCV infection Of 22 liver biopsy samples, 9 represented the clinicopathological diagnoses for ACR-predominant with superimposed RHC (ACR group) and 13 represented the clinicopathological diagnoses for RHC with no ACR (non-ACR group) .

2010-05-15 | E-GEOD-13440 | biostudies-arrayexpress

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