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Accession IconGSE8531

Profiling Motility Signal-Induced Genes in Human Keratinocytes

Organism Icon Homo sapiens
Sample Icon 18 Downloadable Samples
Technology Badge Icon Affymetrix Human Genome U133A 2.0 Array (hgu133a2)

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Description
In an acute skin wound, newly released serum growth factors in the wound bed drive lateral migration of human keratinocytes (HKs) to re-epithelialize the wound. However, profiling the migration signal-specific genes has long been challenged by pleiotropic effects of a given growth factor, including proliferation, migration and factor-specific responses. To overcome these technical problems, we 1) took advantage of a unique response of HKs to transforming growth factor-beta (TGFbeta) to selectively suppress growth signal-responding genes and identify motility-specific genes and 2) employed dual stimulation of HKs with TGFalpha and insulin to identify the common genes and eliminate factor-specific genes. Under these conditions, DNA microarray analyses were utilized to study the profiles of both TGFalpha-regualted and insulin-regulated immediate early (IE, 30 min), early (E, 60 min) and delayed early (DE, 120 min) genes.
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