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- W1978054070 abstract "Corneal fibroblast cell (CFC) reticulation is involved in the structural development of corneal stroma and in wound healing. In an earlier paper, it was reported that the expression of VEGFR-1 by CFCs is related to their reticulogenic properties in vitro and decreases with the age of the donors. The present study was focused on the nonreticulogenic corneal fibroblast population and explored whether these cells can be induced to form cell networks in vitro.The network formation was analyzed using an array of signaling pathway inhibitors: wortmannin for PI3 kinase, U0126 for MEK-1/2 kinase, Rottlerin for PKC, farnesyl transferase inhibitor (FTI-277) for Ras, and picropodophyllin (PPP) for IGFR-1. Among the several growth factors studied, IGF seemed to be crucial to cell network formation. The presence of IGF signaling was demonstrated using gene array analysis and was confirmed by RT-PCR and immunocytochemistry and by cell network formation on reduced synthetic basement membrane arrays. The pleiotropic effect of IGF-1 on the cells was analyzed by protein cytokine array.The genesis of reticulation was found to occur via MEK-1/2 and IGFR pathways, since inhibitors of these signaling pathways reduced or prevented cell network formation. The addition of exogenous IGF-1 generated a cell network structure in corneal fibroblasts obtained from healthy donors, indicating the involvement of IGF-1.IGF signaling and the MEK-1/2 pathway are involved in the cell network formation of corneal fibroblast cells from aged donors." @default.
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- W1978054070 date "2011-09-28" @default.
- W1978054070 modified "2023-10-10" @default.
- W1978054070 title "Insulin Growth Factor Promotes Human Corneal Fibroblast Network Formation In Vitro" @default.
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- W1978054070 doi "https://doi.org/10.1167/iovs.10-5625" @default.
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