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Dadun > Depósito Académico > CIMA (Centro de Investigación Médica Aplicada) > Área de Oncología > Microambiente tumoral > DA - CIMA - Oncología - Microambiente tumoral - Artículos de revista >

Hypoxia alters the adhesive properties of lymphatic endothelial cells. A transcriptional and functional study
Authors: Irigoyen, M. (Marta)
Anso, E. (Elena)
Martinez, E. (Enrique)
Garayoa, M. (Mercedes)
Martinez-Irujo, J.J. (Juan José)
Rouzaut, A. (Ana)
Keywords: Lymphatic
Gene Expression
Issue Date: 2007
Publisher: Elsevier
Publisher version:
ISSN: 0006-3002
Citation: Irigoyen M, Anso E, Martinez E, Garayoa M, Martinez-Irujo JJ, Rouzaut A. Hypoxia alters the adhesive properties of lymphatic endothelial cells. A transcriptional and functional study. Biochim Biophys Acta 2007 Jun;1773(6):880-890.
Recent advances in our understanding of the molecular biology of lymphatic endothelial cells have revealed that these vessels, besides their known function in tissue homeostasis and immunity, constitute conduits for the tumor cells to metastasize. One of the factors that contribute to tumor spread is the acquisition of an angiogenic phenotype as a response to the onset of tumor hypoxia. To our knowledge, little is known about the effects of low oxygen levels on the lymphatic vasculature. Therefore, we used cDNA microarrays to study the transcriptional changes occurring in hypoxia exposed lymphatic endothelial cells. Our analysis was then complemented by functional assays showing that these cells responded with increased attachment to the extracellular matrix, delayed proliferation and production of reactive oxygen species. Differential expression of genes involved in these processes such as NADPH oxidase 4, the tissue inhibitor of metalloproteinase 3, and TGFbeta induced protein I, was found. Hypoxia was also found to increase mRNA levels of the cytokine CXCL-12 and its receptor CXCR4. Moreover, adhesion experiments revealed that hypoxia increased the binding of non-small cell lung carcinoma cells to this endothelium in a CXCR4 dependent way. We thus illustrate the response of lymphatic endothelial cells to hypoxia and suggest targets to study tumor metastasis through these vessels.
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Appears in Collections:DA - Ciencias - Bioquímica y Biología molecular - Artículos de Revista
DA - CIMA - Oncología - Microambiente tumoral - Artículos de revista

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