Unknown,Transcriptomics,Genomics,Proteomics

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Gene expression profiling of endothelial cells isolated from wildtype and Crim1KST264/KST264 adult mice kidneys

ABSTRACT: Previous analysis has shown that the Crim1KST264/KST264 mice develop progressive renal fibrosis as well as vascular abnormalities characterised by increased vascular leakiness and loss of endothelium integrity. To further define this endothelium abnormality, CD31+ endothelial cells were MACS sorted from both wildtype and Crim1KST264/KST264 kidneys for expression profiling to determine the biological processes that are perturbed. Total RNA was extracted from CD31+ MACS sorted endothelial cells from 4 pairs of mixed gender wildtype and Crim1KST264/KST264 adult mice kidneys

ORGANISM(S): Mus musculus

SUBMITTER: Melissa Little

PROVIDER: E-GEOD-37606 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

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Publications

Distinct sites of renal fibrosis in Crim1 mutant mice arise from multiple cellular origins.

Phua Yu Leng YL Martel Nick N Pennisi David J DJ Little Melissa H MH Wilkinson Lorine L

The Journal of pathology 20130222 5

Crim1 is a transmembrane protein that regulates the bioavailability of growth factors such as VEGFA. Crim1(KST264)(/)(KST264) hypomorphic mice develop renal disease characterized by glomerular cysts and loss of endothelial integrity, progressing to peritubular and pericystic fibrosis. Peritubular capillary endothelial cells display morphological changes as well as detachment from the basement membrane. In this study, gene expression profiling of CD31(+) endothelial cells isolated from Crim1(KST2 ...[more]

PMID: 23224993

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Project description:A major challenge in realizing regenerative treatment using freshly isolated Adipose Derived Regenerative Cells (ADRCs) is the cellular heterogeneity and donor variability. Ex vivo expanded ADRCs (=ASCs) are available at larger quantities and represent a more homogeneous population suitable for allogenic use. Emerging pre-clinical and clinical data however suggest similar, or even superior efficacy of ADRCs as compared to ASCs for indications involving (micro)vascular deficiency. Since CD31+ ADRCs lack in cultured ASCs, we hypothesized that these cells account for improvement of vascular function in the heterogenous ADRCs. Herein, we found that in patients with erectile dysfunction (ED), the number of injected CD31+ ADRCs correlates positively with erectile function 12 months after one bolus of autologous ADRCs. Comprehensive in vitro and ex vivo analyses confirmed superior pro-angiogenic and paracrine effects of human CD31+ enriched ADRCs compared to the corresponding CD31- and parent ADRCs. CD31+, CD31- and ADRCs were co-cultured in aortic ring-, as well as in ED-relevant corpus cavernousum tube formation assays, both showing a significantly higher ability of the CD31+ ADRCs to support tube development. This effect was corroborated using conditioned medium (CM), while quantitative mass spectrometric analysis suggested that this is explained by secretory pro-angiogenic proteins such as DKK3, ANGPT2, ANAX2 and VIM, all being enriched in CD31+ADRC CM. To gain further specification of the ADRC subpopulations expressing these proteins, single-cell RNA sequencing was performed and showed that transcripts of the upregulated and secreted proteins were present in 9 endothelial ADRC subsets including endothelial progenitor cells in the heterogenous non-cultured ADRCs. Our data thus suggest that the vascular benefit of using ADRCs in regenerative medicine is dictated by CD31+ ADRCs, which likely represent an improved alternative to heterogenous ADRCs as well as ASCs when aiming for vascular repair in cell therapy.

Project description:Chen2006 - Nitric Oxide Release from Endothelial Cells This model is described in the article: Theoretical analysis of biochemical pathways of nitric oxide release from vascular endothelial cells. Chen K, Popel AS. Free Radic. Biol. Med. 2006 Aug; 41(4): 668-680 Abstract: Vascular endothelium expressing endothelial nitric oxide synthase (eNOS) produces nitric oxide (NO), which has a number of important physiological functions in the microvasculature. The rate of NO production by the endothelium is a critical determinant of NO distribution in the vascular wall. We have analyzed the biochemical pathways of NO synthesis and formulated a model to estimate NO production by the microvascular endothelium under physiological conditions. The model quantifies the NO produced by eNOS based on the kinetics of NO synthesis and the availability of eNOS and its intracellular substrates. The predicted NO production from microvessels was in the range of 0.005-0.1 microM/s. This range of predicted values is in agreement with some experimental values but is much lower than other rates previously measured or estimated from experimental data with the help of mathematical modeling. Paradoxical discrepancies between the model predictions and previously reported results based on experimental measurements of NO concentration in the vicinity of the arteriolar wall suggest that NO can also be released through eNOS-independent mechanisms, such as catalysis by neuronal NOS (nNOS). We also used our model to test the sensitivity of NO production to substrate availability, eNOS concentration, and potential rate-limiting factors. The results indicated that the predicted low level of NO production can be attributed primarily to a low expression of eNOS in the microvascular endothelial cells. This model is hosted on BioModels Database and identified by: BIOMD0000000676. To cite BioModels Database, please use: Chelliah V et al. BioModels: ten-year anniversary. Nucl. Acids Res. 2015, 43(Database issue):D542-8. To the extent possible under law, all copyright and related or neighbouring rights to this encoded model have been dedicated to the public domain worldwide. Please refer to CC0 Public Domain Dedication for more information.

Dataset Information

Gene expression profiling of endothelial cells isolated from wildtype and Crim1KST264/KST264 adult mice kidneys

Publications

Distinct sites of renal fibrosis in Crim1 mutant mice arise from multiple cellular origins.

Similar Datasets

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