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Transcriptomics of Kidney Transplant Recipients after Cytomegalovirus DNAemia

ABSTRACT: Transcriptomics of Kidney Transplant Recipients after Cytomegalovirus DNAemia

PROVIDER: PRJNA708352 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR13920000.fastq.gz	Fastqsanger.gz
	SRR13920100.fastq.gz	Fastqsanger.gz
	SRR13920001.fastq.gz	Fastqsanger.gz
	SRR13920101.fastq.gz	Fastqsanger.gz
	SRR13920002.fastq.gz	Fastqsanger.gz

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Kidney transplant recipients

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Transcriptomics of Kidney Transplant Recipients after Cytomegalovirus DNAemia

Project description:To study the gene expression dynamics in cytomegalovirus (CMV) DNAemic patients after kidney transplantation, we performed RNA sequencing (RNAseq) on 31 DNAemic patients at 4 timepoints (baseline, 1 week post-DNAemia, 1 month post-DNAemia, and a long-term timepoint 9-18 months post-DNAemia) matched with 31 non-DNAemic patients at 2 timepoints (baseline and long-term).

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Project description:Targeted bisulfite sequencing data of peripheral blood mononuclear cells (PBMCs) from participants pre- and post- kidney transplant(Tx) was generated to study 1) methylation difference between pre- and postTx, 2) methylation difference between cytomegalovirus (CMV) seropositive and seronegative in preTx, 3) immune response regarding Tx and immunosuppression prophylaxes, and 4) how the gene expression and DNA methylation are associated.

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Project description:RNA-seq data of peripheral blood mononuclear cells (PBMCs) from participants pre- and post- kidney transplant(Tx) was generated to study 1) gene expression difference between pre- and postTx, 2) gene expression difference between cytomegalovirus (CMV) seropositive and seronegative in preTx, 3) immune response regarding Tx and immunosuppression prophylaxes, and 4) how the gene expression and DNA methylation are associated.

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Project description:Background: Hepatitis E Virus (HEV) is a new causative agent of chronic hepatitis in solid organ transplant recipients in Europe. Factors associated with the occurrence and persistence of chronic HEV infection remain largely unknown but chronic evolution seems to be the consequence of hostM-bM-^@M-^Ys immunological factors rather than of viral factors. Method: In a prospective case-control study, we have determined in whole blood of chronically HEV-infected kidney-transplant recipients the host response using microarray technology. Results: Chronically HEV-infected kidney-transplant recipients exhibited a specific transcriptional program, in which interferon effectors were prominent. The intensity of expression of each signatureM-bM-^@M-^Ys gene was significantly lower in patients who were subsequently cleared of HEV than in patients who were not. Furthermore, in patients who were cleared of HEV, a higher expression of these genes was associated with a longer delay until HEV clearance. Conclusions: The specific transcriptional program determined in chronically HEV-infected kidney-transplant recipients suggests an activation of type I interferon response. Intensity of interferon-stimulated genes expression could be useful to forecast the outcome of infection. High expression of interferon-stimulated genes could signify a dysregulation in the interferon response that might favour the persistence of the HEV infection. TrialM-bM-^@M-^Ys registration number: NCT01090232; RegistryM-bM-^@M-^Ys URL: http://clinicaltrials.gov/ct2/show/study/NCT01090232?term=kidney+transplant+recipients&cntry1=EU%3AFR&rank=2 Total RNA was extracted from whole-blood sample or monocytes of kidney-transplant patients with or without chronic hepatitis E (CHE) infection. Control patients were matched up with CHE patients for age, sex, time since kidney transplant and immunosuppressive treatment.

2013-01-29 | E-GEOD-36539 | biostudies-arrayexpress

Project description:Background: Hepatitis E Virus (HEV) is a new causative agent of chronic hepatitis in solid organ transplant recipients in Europe. Factors associated with the occurrence and persistence of chronic HEV infection remain largely unknown but chronic evolution seems to be the consequence of host’s immunological factors rather than of viral factors. Method: In a prospective case-control study, we have determined in whole blood of chronically HEV-infected kidney-transplant recipients the host response using microarray technology. Results: Chronically HEV-infected kidney-transplant recipients exhibited a specific transcriptional program, in which interferon effectors were prominent. The intensity of expression of each signature’s gene was significantly lower in patients who were subsequently cleared of HEV than in patients who were not. Furthermore, in patients who were cleared of HEV, a higher expression of these genes was associated with a longer delay until HEV clearance. Conclusions: The specific transcriptional program determined in chronically HEV-infected kidney-transplant recipients suggests an activation of type I interferon response. Intensity of interferon-stimulated genes expression could be useful to forecast the outcome of infection. High expression of interferon-stimulated genes could signify a dysregulation in the interferon response that might favour the persistence of the HEV infection. Trial’s registration number: NCT01090232; Registry’s URL: http://clinicaltrials.gov/ct2/show/study/NCT01090232?term=kidney+transplant+recipients&cntry1=EU%3AFR&rank=2

2013-01-29 | GSE36539 | GEO

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Project description:Transcriptomic profiling of kidney transplant recipients [RNA-seq]

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Distinct peripheral blood molecular signature emerges with successful tacrolimus withdraw in kidney transplant recipients

Project description:Tacrolimus (Tac) is an effective anti-rejection agent in kidney transplantation, but its off-target effects make withdrawal desirable. While studies indicate that Tac can be safely withdrawn in a subset of kidney transplant recipients, immune mechanisms that underlie successful vs. unsuccessful Tac removal are unknown. We performed microarray analyses of PBMC RNA from subjects enrolled in the Clinical Trials in Organ Transplantation-09 study in which stable kidney transplant recipients were randomized to Tac withdrawal or maintenance of standard immunosuppression beginning 6-mo post-transplant. Eight of 14 subjects attempted but failed withdrawal, while six developed stable graft function for ≥2 years on mycophenolate mofetil plus prednisone. Whereas failed withdrawal upregulated immune activation genes, successful Tac withdrawal was associated with a distinct, T cell-specific, downregulatory, and pro-apoptotic gene program. Functional analyses suggested stronger donor-reactive immunity in subjects who failed withdrawal without evidence of regulatory T cell dysfunction. Together, our data suggest that successful Tac withdrawal can unleash an active, protective pro-apoptotic T cell program, and provide the foundation for developing strategies to promote this protective immunological phenotype in kidney transplant recipients.

2020-02-18 | GSE145408 | GEO

Adipose tissue gene expression associated with weight gain in kidney transplant recipients

Project description:The aim of this study was to investigate the association of gene expression profiles in subcutaneous adipose tissue with percent of total body weight change in 26 kidney transplant recipients. Using multivariate linear regression analysis controlled for race and gender, expression levels of 1553 genes were significantly (p<0.05) associated with weight change. A secondary data analysis was done on a subgroup (n=26) of existing clinical and gene expression data from a larger prospective longitudinal study examining factors contributing to weight gain in transplant recipients.

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