Unknown,Transcriptomics,Genomics,Proteomics

Dataset Information

Transcription profiling of freshly isolated CD31+ vs freshly isolated CD31- adipose-derived adult stem cells (ADASCs)

ABSTRACT: In order to assess whether there were differences in gene expression between the polyclonal CD31+ and the polyclonal CD31- cell populations of adipose-derived adult stem cells (ADASCs), we wanted to identify possible genes that were differentially expressed between these two cell populations. To that end, RNA was isolated from polyclonal CD31+ and the polyclonal CD31- ADASCs from three different donors and analyzed using the Affymetrix Microarray HG-U133A. Then, using the Affymetrix program MAS 5.0 we performed three comparisons and could identify differentially expressed transcripts common between the three donors, using the Affymetrix program DMT 3.0.

ORGANISM(S): Homo sapiens

SUBMITTER: Katrine Frønsdal

PROVIDER: E-MEXP-167 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

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Publications

Isolation and transcription profiling of purified uncultured human stromal stem cells: alteration of gene expression after in vitro cell culture.

Boquest Andrew C AC Shahdadfar Aboulghassem A Frønsdal Katrine K Sigurjonsson Olafur O Tunheim Siv H SH Collas Philippe P Brinchmann Jan E JE

Molecular biology of the cell 20050105 3

Stromal stem cells proliferate in vitro and may be differentiated along several lineages. Freshly isolated, these cells have been too few or insufficiently pure to be thoroughly characterized. Here, we have isolated two populations of CD45-CD34+CD105+ cells from human adipose tissue which could be separated based on expression of CD31. Compared with CD31+ cells, CD31- cells overexpressed transcripts associated with cell cycle quiescence and stemness, and transcripts involved in the biology of ca ...[more]

PMID: 15635089

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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.

Dataset Information

Transcription profiling of freshly isolated CD31+ vs freshly isolated CD31- adipose-derived adult stem cells (ADASCs)

Publications

Isolation and transcription profiling of purified uncultured human stromal stem cells: alteration of gene expression after in vitro cell culture.

Similar Datasets

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