Rattus norvegicus
Ontology highlight
ABSTRACT:
PROVIDER: PRJNA139319 | ENA |
REPOSITORIES: ENA
Similar Datasets
Project description:The goal is to identify new molecules implicated in tolerance, to determine the implication of these molecules in immune responses to transplantation by gene expression comparison of 27,088 individual rat genes between tolerated kidney allotransplant and syngeneic kidney transplant. In this study 27,088 individual rat genes expression from total mRNA of 3 tolerated allogeneic kidney transplants by anti-classII, were compared to 3 syngeneic kidney transplants at day 100 post transplantation.
2011-04-09 | E-GEOD-28474 | biostudies-arrayexpress
Project description:The goal is to identify new molecules implicated in tolerance, to determine the implication of these molecules in immune responses to transplantation by gene expression comparison of 27,088 individual rat genes between tolerated kidney allotransplant and syngeneic kidney transplant.
2011-04-09 | GSE28474 | GEO
Project description:The goal is to identify molecules involved in the accumulation of blood MDSCs in tolerant kidney allografted recipients when compared to syngeneic grafted recipients. In this study 27,088 individual rat genes expression from total mRNA of blood MDSCs from 3 tolerated allogeneic kidney transplanted recipient by anti-CD28, were compared to MDSCs from 3 syngeneic kidney transplanted recipient at day 100 post transplantation.
2011-04-13 | E-GEOD-28545 | biostudies-arrayexpress
Project description:Microarray analyses provide a powerful approach to identify gene expression alterations following kidney transplantation. However, the heterogeneity of human kidney transplant specimens and the variation in sample preparation precludes conclusions regarding the underlying mechanisms of the observed alterations. We used a well defined experimental rat kidney transplantation model with consistent transplant and sample preparation procedures to analyze genome wide changes in gene expression after syngeneic (sTX) and allogeneic transplantation (aTX) four days after transplantation. Both interventions were associated with dramatic changes in gene expression. Genes and Pathways related to immune response were extremely up regulated after aTX. Several of the up regulated genes have been described by other groups and we are able to proof this in one study. But several genes are reported for the first time to be up regulated in expression after renal aTX. The function of these genes in acute rejection process has to be evaluated. On the other hand the up regulation of regulatory or protective genes indicates that regulatory mechanism are activated after aTX trying to down regulate the immune response or protect the tissue against the immune system. The study is capable to serve as a representative study in aTX mediated gene expression by covering the known transcriptional changes reported by other groups and identification of novel markers and pathways. Further analysis of the duplicated datasets by other groups can help for a better understanding of the mechanisms mediated by acute rejection and thereby increase the therapeutic threatment. Experiment Overall Design: Male LewisâBrown-Norway (LBN) and Lewis (LEW) rats were used in the present study. All recipients were bilaterally nephrectomized immediately before donor kidney TX. In brief, the left kidney including ureter, renal artery, a piece of aorta and renal vein was transplanted into the recipient. For the allogeneic TX (aTX) model, kidneys of LBN-rats (n=5) were transplanted into LEW-rats and for the syngeneic TX (sTX) model kidneys from LBN-rats (n=5) were transplanted into LBN-rats. The LBN-into-Lewis model leads to marked histological changes typical for acute transplant rejection. The second kidney of the LBN-donors (n=5) served as controls.
2008-06-14 | E-GEOD-6497 | biostudies-arrayexpress
Project description:We performed RNA sequencing on grafts after heart transplantation under three conditions: syngeneic, allogeneic, and allogeneic with anti-CD80/86 antibody treatment.
2025-12-31 | E-MTAB-16131 | biostudies-arrayexpress
Project description:This study compared gene expression in murine bcr-abl positive acute lymphoblastic leukemia cells in vivo in allogeneic BMT recipients compared to syngneneic BMT recipients. Experiment Overall Design: The goal of the experiment was to compare gene expression in leukemia cells that were in either an allogeneic transplant (5 samples) or syngeneic transplant (5 samples) immune environment in vivo. The bone marrow transplant model involved preparation of C57BL/6 recipients with total body irradiation and 5-fluoruracil. These recipients were then infused IV with either allogeneic C3.SW marrow and spleen cells or syngeneic C57BL/6 marrow and spleen cells. The leukemia cells were mixed in with the marrow and spleen cells. After a few weeks (2-3) the C57BL/6 leukemia cells were purified by flow cytometry and passed into other freshly transplanted animals. After three serial transplants the leukemia cells were flow purified and RNA prepared. Leukemia was C57BL/6 background (cells contain the human p210 bcr/abl oncogenic fusion gene and also have a deletion in the Ink4a/Arf locus, see: Biology of Blood and Marrow Transplantation. 14:622-630, 2008).
2009-09-06 | E-GEOD-17497 | biostudies-arrayexpress
Project description:To investigate gene expression profile of medullary thymic epithelial cells with high surface density of MHC class II (mTEChigh), a murine parent into F1 hematopoietic stem cell transplantation model was administered. As recipient mice (B6xDBA/2)F1 (B6D2F1) were used that received either a syngeneic transplant from a (B6xDBA/2)F1 mouse or an allogeneic transplant from a B6 mouse, which leads to acute graft-versus-host disease (aGVHD). mTEChigh (CD45-EpCAM+Ly51-UEA1+MHCIIhigh) are sorted by FACS.
2012-12-20 | E-MEXP-3745 | biostudies-arrayexpress
Project description:The transcriptional profile of kidney organoid-based tissues resembled the gene signature observed in human kidney transplant rejection when transplanted into mice reconstituted with an allogeneic immune system.
2024-09-03 | GSE242885 | GEO
Project description:Acute graft-versus-host disease (GVHD) arises from dysregulated donor T cell mediated immune interactions against the host, following allogeneic hematopoietic cell transplantation (allo-HCT). However, mechanisms via which non-hematopoietic host tissues actively shape post-transplant outcomes remains incompletely defined. Here, we identify endothelial cell (EC)-intrinsic interferon-g (IFNg)—IRF1 signaling as a key pathway controlling vascular remodeling and immune tolerance after allo-HCT. Using single cell RNA sequencing of liver ECs from syngeneic and allogeneic transplant recipients, we reveal that liver ECs undergo rapid, subset-specific transcriptional reprogramming after allo-HCT, marked by strong induction of IFNg-responsive pathways. We show IRF1 is a key upstream regulator, linking IFNg signaling to endothelial activation and functional remodeling. Both in vitro and in vivo studies reveal that endothelial intrinsic IFNg—IRF1 signaling is dispensable for Th1 differentiation but required for endothelial-driven Treg expansion. Loss of endothelial IRF1 in vivo uncouples vascular integrity from endothelial-mediated tolerance, reducing endothelial activation and apoptosis but exacerbating GVHD due to impaired Treg induction. Our findings suggest that therapeutic strategies that preserve endothelial IRF1-dependent tolerogenic programs may reduce GVHD severity while maintaining protective alloimmune responses.
2026-07-13 | GSE317430 | GEO
Project description:The frequency of delayed function of kidney transplants varies greatly and is associated with the quality of graft, donor age, and the duration of cold ischemia time. Body weight differences between donor and recipient can affect primary graft function. The underlying mechanism is poorly understood. Here, we have transplanted kidney grafts from commensurate body weight (L-WD) or reduced body weight (H-WD) donor rats into syngeneic or allogeneic recipients. 24 hours post-transplantation, serum creatinine level in H-WD recipients was significantly higher compared to that of L-WD recipients indicating impaired primary graft function. We detected a 10 fold higher transcription of IL-6 and dramatically increased tubular destruction in grafts from H-WD recipients. This was accompanied by decreased expression of genes associated with kidney function and an up-regulation of other genes such as cytochrome P450 isoforms, FosL and Trib3 as revealed by DNA microarray analysis. A single application of IL-6 into L-WD recipients is sufficient to impair primary graft function and to cause tubular damage. Whereas, immediate neutralization of IL-6 receptor signaling rescued primary graft function resulting in low serum creatinine levels, well-preserved kidney graft architecture and a normalized gene expression profile. These findings have strong clinical implication as anti-IL6R treatment of patients receiving grafts from lower-weight donors could be used to improve primary graft function. The dataset comprises eight samples divided into four sample groups. Each group represents rat kidneys collected after allogeneic transplantation under a certain condition and includes two biological replicates. The first group is characterized by a high body weight difference between donor and recipient, rats in the second group exhibit a low weight difference. Group three and four are similar to group one, but underwent an additional treatment with anti-IL6R mAb or prednisolone immediately after transplantation.
2010-04-08 | E-GEOD-15813 | biostudies-arrayexpress