| Autor: |
Elisa Montanari, Raphael P. H. Meier, Redouan Mahou, Jörg D. Seebach, Christine Wandrey, Sandrine Gerber-Lemaire, Leo H. Buhler, Carmen Gonelle-Gispert |
| Jazyk: |
angličtina |
| Rok vydání: |
2017 |
| Předmět: |
|
| Zdroj: |
Stem Cell Research & Therapy, Vol 8, Iss 1, Pp 1-12 (2017) |
| Druh dokumentu: |
article |
| ISSN: |
1757-6512 |
| DOI: |
10.1186/s13287-017-0646-7 |
| Popis: |
Abstract Background Multipotent mesenchymal stromal cells (MSC) enhance viability and function of islets of Langerhans. We aimed to examine the interactions between human MSC and human islets of Langerhans that influence the function of islets. Methods Human MSC and human islets (or pseudoislets, obtained after digestion and reaggregation of islet cells) were cocultured with or without cellular contact and glucose-stimulated insulin secretion assays were performed to assess cell function. The expression of several adhesion molecules, notably ICAM-1 and N-cadherin on islets and MSC, was investigated by qPCR. The role of N-cadherin was analyzed by adding an anti-N-cadherin antibody in islets cultured with or without MSC for 24 h followed by insulin measurements in static incubation assays. Islets and MSC were coencapsulated in new hydrogel microspheres composed of calcium alginate and covalently crosslinked polyethylene glycol. Encapsulated cells were transplanted intraperitoneally in streptozotocin-induced diabetic mice and glycemia was monitored. Islet function was evaluated by the intraperitoneal glucose tolerance test. Results In vitro, free islets and pseudoislets cocultured in contact with MSC showed a significantly increased insulin secretion when compared to islets or pseudoislets cultured alone or cocultured without cell-to-cell contact with MSC (p |
| Databáze: |
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| Externí odkaz: |
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