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Characterization of the expression of the hypoxia-induced genes neuritin, TXNIP and IGFBP3 in cancer.

Abstract : By triggering an adaptive response to hypoxia which is a common feature of tumor microenvironments, endothelial cells contribute to the onset of angiogenic responses involved in tumor growth. Therefore, identifying hypoxic markers represent a challenge for a better understanding of tumor angiogenesis and for the optimization of anti-angiogenic therapeutic strategy. Using representational difference analysis combined with microarray, we here report the identification of 133 hypoxia-induced transcripts in human microendothelial cells (HMEC-1). By Northern blot, we confirm hypoxia-induced expression of insulin-like growth factor binding protein 3 (igfbp3), thioredoxin-interacting protein (txnip), neuritin (nrn1). Finally, by performing in situ hybridization on several types of human tumors, we provide evidence for nrn1 and txnip as hypoxic perinecrotic markers and for igfbp3 as a tumor endothelial marker. We propose these hypoxia-induced genes could represent relevant prognostic tools and targets for therapeutic intervention in cancers.
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https://www.hal.inserm.fr/inserm-00073189
Contributor : Sandrine Mouret <>
Submitted on : Friday, June 2, 2006 - 3:29:34 PM
Last modification on : Thursday, August 27, 2020 - 2:10:08 PM
Long-term archiving on: : Sunday, April 4, 2010 - 11:37:23 PM

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Sébastien Le Jan, Nolwenn Le Meur, Aurélie Cazes, Josette Philippe, Martine Le Cunff, et al.. Characterization of the expression of the hypoxia-induced genes neuritin, TXNIP and IGFBP3 in cancer.. FEBS Letters, Wiley, 2006, 580 (14), pp.3395-400. ⟨10.1016/j.febslet.2006.05.011⟩. ⟨inserm-00073189⟩

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