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Accession IconGSE75744

Effect of Cathepsin L exposure on endothelial cell transcriptomics

Organism Icon Homo sapiens
Sample Icon 8 Downloadable Samples
Technology Badge Icon Affymetrix Human Transcriptome Array 2.0 (hta20)

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Description
Cathepsin L is a lysosomal protease that is secreted by several cancer cells. Cathepsin L upregulation has been widely associated with poor clinical outcome and increased metastatic incidence. However, whether Cathepsin L participates in tumor angiogenesis remains less studied. Our study showed a significant activation of angiogenic capacity of endothelial cells in presence of purified or tumor derived Cathepsin L. In addition, Cathepsin L exposure led to a significant increase in the proliferative capacity of endothelial cells. While the ability of Cathepsin L to promote endothelial cell sprouting, migration, invasion and tube formation can be attributed to its proteolytic effects on extracellular matrix, how it promotes endothelial cell proliferation remains obscure. The objective of this study was to test if Cathepsin L exposure can activate signaling cascades and gene expression leading to proliferation of endothelial cells.
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