SIADIA

Siglecs as mediators of the pancreatic cellular crosstalk in diabetes

Coordinatore	UNIVERSITAET BREMEN    more Spiacenti, non ci sono informazioni su questo coordinatore. Contattare Fabio per maggiori infomrazioni, grazie.
Nazionalità Coordinatore	Germany [DE]
Totale costo	1˙363˙847 €
EC contributo	1˙363˙847 €
Programma	FP7-IDEAS-ERC Specific programme: "Ideas" implementing the Seventh Framework Programme of the European Community for research, technological development and demonstration activities (2007 to 2013)
Code Call	ERC-2010-StG_20091118
Funding Scheme	ERC-SG
Anno di inizio	2011
Periodo (anno-mese-giorno)	2011-01-01   -   2015-12-31

 Partecipanti

#	participant	country	role	EC contrib. [€]
1	UNIVERSITAET BREMEN  Organization address address: Bibliothekstrasse 1 city: BREMEN postcode: 28359 contact info Titolo: Dr. Nome: Kathrin Ulrike Cognome: Maedler Email: send email Telefono: +49 42121863290 Fax: +49 421 2184279	DE (BREMEN)	hostInstitution	1˙363˙847.00
2	UNIVERSITAET BREMEN  Organization address address: Bibliothekstrasse 1 city: BREMEN postcode: 28359 contact info Titolo: Ms. Nome: Silke Cognome: Reinold Email: send email Telefono: +49 421 21860326 Fax: +49 421 2189860326	DE (BREMEN)	hostInstitution	1˙363˙847.00

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 Obiettivo del progetto (Objective)

'The mechanisms of the immune and endocrine cell interaction within the islet and resulting β-cell death are highly complex and largely unknown. To investigate the cellular crosstalk in the pancreas and how its disturbance leads to insufficient insulin production is important to understand the pathology of the disease. This is the major goal of this project. Activation of inflammation is not only a trigger for β-cell destruction, but also a major factor for the metabolic syndrome, including insulin resistance and complications of diabetes. Signalling and activation of immune cells is facilitated by secreted pro-inflammatory stimulators and via cell-cell interactions. I propose that a group of adhesion and signalling molecules, the Siglecs (sialic acid–binding immunoglobulin (Ig)-like lectins) mediate such interactions. They are responsible for immune system activation and have been initially found in cells of hematopoietic origin. I made the groundbreaking observation of cell type specific Siglec expression in the human pancreas: Siglecs were differentially expressed in glucagon producing α-cells, and in insulin producing β-cells. A diabetic milieu had an inductive effect on Siglec expression in the α-cells, but lead to decreased β-cell specific Siglecs. This loss of Siglecs in the β-cell could be detrimental and result in an excessive cytokine release and in turn switches on Siglec responses in neighbouring cells. In my proposed studies I will investigate the role of Siglecs in the cellular network in islets and in the circulation to probe whether changes in Siglec expression are causative in the development of diabetes. My project is a pioneer and multidisciplinary study combining the current knowledge of glycobiochemistry and β-cell biology in diabetes. The project uses multi-model cell systems of healthy and diseased human pancreatic tissue, isolated human islets, isolated human β-cells as well as diabetic mouse models, all of them being absolutely novel and high-risk to a large extend.'