Changes in Laminin Expression Pattern during Early Differentiation of Human Embryonic Stem Cells

Laminin isoforms laminin-511 and -521 are expressed by human embryonic stem cells (hESC) and can be used as a growth matrix to culture these cells under pluripotent conditions. However, the expression of these laminins during the induction of hESC differentiation has not been studied in detail. Furt...

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Veröffentlicht in:PloS one 2015-09, Vol.10 (9), p.e0138346-e0138346
Hauptverfasser: Pook, Martin, Teino, Indrek, Kallas, Ade, Maimets, Toivo, Ingerpuu, Sulev, Jaks, Viljar
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Teino, Indrek
Kallas, Ade
Maimets, Toivo
Ingerpuu, Sulev
Jaks, Viljar
description Laminin isoforms laminin-511 and -521 are expressed by human embryonic stem cells (hESC) and can be used as a growth matrix to culture these cells under pluripotent conditions. However, the expression of these laminins during the induction of hESC differentiation has not been studied in detail. Furthermore, the data regarding the expression pattern of laminin chains in differentiating hESC is scarce. In the current study we aimed to fill this gap and investigated the potential changes in laminin expression during early hESC differentiation induced by retinoic acid (RA). We found that laminin-511 but not -521 accumulates in the committed cells during early steps of hESC differentiation. We also performed a comprehensive analysis of the laminin chain repertoire and found that pluripotent hESC express a more diverse range of laminin chains than shown previously. In particular, we provide the evidence that in addition to α1, α5, β1, β2 and γ1 chains, hESC express α2, α3, β3, γ2 and γ3 chain proteins and mRNA. Additionally, we found that a variant of laminin α3 chain-145 kDa-accumulated in RA-treated hESC showing that these cells produce prevalently specifically modified version of α3 chain in early phase of differentiation.
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subjects Animals
Binding sites
Biology
Cell adhesion & migration
Cell culture
Cell Differentiation - physiology
Cells, Cultured
Chains
Differentiation
Embryo cells
Embryonic stem cells
Embryos
Fibroblasts
Human Embryonic Stem Cells - metabolism
Human Embryonic Stem Cells - physiology
Humans
Isoforms
Laboratory animals
Laminin
Laminin - metabolism
Medicin och hälsovetenskap
Mice
mRNA
Pluripotency
Protein Isoforms - metabolism
Proteins
Retinoic acid
RNA, Messenger - metabolism
Stem cells
Transcription factors
Tretinoin
title Changes in Laminin Expression Pattern during Early Differentiation of Human Embryonic Stem Cells
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