OXFORDWINSTON

The effects of lineage differentiation into pancreatic beta-cells on the immunogenicity of amniotic fluid stem cells

Coordinatore	THE CHANCELLOR, MASTERS AND SCHOLARS OF THE UNIVERSITY OF OXFORD    more  Organization address address: University Offices, Wellington Square city: OXFORD postcode: OX1 2JD contact info Titolo: Ms. Nome: Linda Cognome: Polik Email: send email Telefono: +44 1865 222508 Fax: +44 1865 763545
Nazionalità Coordinatore	United Kingdom [UK]
Totale costo	333˙819 €
EC contributo	333˙819 €
Programma	FP7-PEOPLE Specific programme "People" implementing the Seventh Framework Programme of the European Community for research, technological development and demonstration activities (2007 to 2013)
Code Call	FP7-PEOPLE-2007-4-1-IOF
Funding Scheme	MC-IOF
Anno di inizio	2008
Periodo (anno-mese-giorno)	2008-06-01   -   2011-05-31

 Partecipanti

#	participant	country	role	EC contrib. [€]
1	THE CHANCELLOR, MASTERS AND SCHOLARS OF THE UNIVERSITY OF OXFORD  Organization address address: University Offices, Wellington Square city: OXFORD postcode: OX1 2JD contact info Titolo: Ms. Nome: Linda Cognome: Polik Email: send email Telefono: +44 1865 222508 Fax: +44 1865 763545	UK (OXFORD)	coordinator	0.00

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 Obiettivo del progetto (Objective)

'The use of stem cells for curing disease and ending disabilities may change the medical treatment in this century. However, there are some major roadblocks that need to be resolved before these cells are implemented in ordinary medical care. There are serious ethical issues regarding the use of embryonic stem cells, reliable methods for isolation and expansion of stem cells need to be established, stem cell plasticity raises the issue of tumorigenicity, the use of stem cell transplantation might encounter with rejection and more information is needed on stem cell immunogenicity. This proposal aims to address some of these roadblocks. Replacement of β-cells by transplantation of pancreatic islets has become a viable option for the treatment of certain patients with unstable Type 1 diabetes mellitus. However, the current supply of islets from pancreata of organ donors is very limited. Stem cells may serve as a new source of β-cells. Although promising results have been reported in the production of β-like cells from human embryonic stem cells, the process appears relatively inefficient. We have described the isolation of a novel class of human amniotic fluid stem (AFS) cells and showed that they are capable of extensive clonal expansion and can give rise to differentiated cell types derived from all three embryonic germ layers, but do not form teratoma tumors. Experiments with mouse AFS cells show that, when we forced the expression of the pancreatic transcription factor PDX-1, the cells can be induced to form islet-like clusters containing a high proportion of cells that synthesize proinsulin and display glucose-stimulated insulin secretion. Studies with human AFS (hAFS) cells have confirmed that they can express mRNA for critical beta-cell lineage functions. However, in the clinical scenario hAFS cells will face potential alloimmune responses including autoimmunity.'