β-Galactoside-mediated tissue organization during islet reconstitution.

Autor:	Kamitori S; Graduate School of Nanobioscience, Yokohama City University, 22-2 Seto, Kanazawa-ku, Yokohama 236-0027, Japan., Ozeki Y; Graduate School of Nanobioscience, Yokohama City University, 22-2 Seto, Kanazawa-ku, Yokohama 236-0027, Japan., Kojima N; Graduate School of Nanobioscience, Yokohama City University, 22-2 Seto, Kanazawa-ku, Yokohama 236-0027, Japan.
Jazyk:	angličtina
Zdroj:	Regenerative therapy [Regen Ther] 2016 Mar 01; Vol. 3, pp. 11-14. Date of Electronic Publication: 2016 Mar 01 (Print Publication: 2016).
DOI:	10.1016/j.reth.2016.01.006
Abstrakt:	We have previously reported that multi-cellular heteroaggregates comprising murine pancreatic α (αTC1.6) and β (MIN6-m9) cell lines spontaneously acquired islet-like architecture and displayed higher insulin secretion rates. However, the mechanisms of self-organization remain unclear. The objective of this study is to examine the possibility that a sugar chain participates in the mutual recognition of the cells during reconstitution of the islet-like structure in vitro . Using a lectin-binding assay, we identified Erythrina cristagalli agglutinin (ECA), which particularly recognizes the β-galactoside structure on the surfaces of MIN6-m9 cells. The self-organization of αTC1.6 and MIN6-m9 was obstructed using ECA-bound MIN6-m9 cells. Lactose neutralized the ECA's inhibitory effect on the autonomous rearrangement of αTC1.6 and MIN6-m9 cells, indicating that the inhibition of cell arrangement by ECA was mediated via β-galactoside. We concluded that a β-galactoside sugar chain was central to the reconstitution of the pancreatic islet-like architecture in vitro .
Databáze:	MEDLINE
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