Open Access

Cripto haploinsufficiency affects in vivo colon tumor development

  • Authors:
    • Emilia Giorgio
    • Annamaria Liguoro
    • Luca D'Orsi
    • Sara Mancinelli
    • Antonio Barbieri
    • Giuseppe Palma
    • Claudio Arra
    • Giovanna L. Liguori
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  • Published online on: April 30, 2014     https://doi.org/10.3892/ijo.2014.2412
  • Pages: 31-40
  • Copyright: © Giorgio et al. This is an open access article distributed under the terms of Creative Commons Attribution License [CC BY_NC 3.0].

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Abstract

Colorectal cancer is one of the most common and aggressive cancers arising from alterations in various signaling pathways, such as the WNT, RAS-MAPK, PI3K and transforming growth factor-β (TGF-β) pathways. Cripto (also called Teratocarcinoma-derived growth factor), the original member of the vertebrate EGF-CFC family, plays a key role in all of these pathways and is deeply involved in early embryo development and cancer progression. The role of Cripto in colon and breast cancer, in particular, has been investigated, as it is still not clearly understood. In this article, we provide the first in vivo functional evidence of a role of Cripto in colon cancer development. We analyzed the effect of Cripto haploinsufficiency on colon tumor formation by treating Cripto heterozygous mice with the colonotropic carcinogen azoxymethane (AOM). Of note, in our model system, Cripto haploinsufficiency increased tumorigenesis. Moreover, we revealed a correlation between the differential AOM response found in wt and Cripto+/- mice and the expression levels of glucose regulated protein-78 (Grp78), a heat shock protein required for Cripto signaling pathways. We hypothesize that the balance between Cripto and Grp78 expression levels might be crucial in cancer development and may account for the increased tumorigenesis in Cripto heterozygous mice. In summary, our results highlight the heterogeneous effect of Cripto on tumorigenesis and the consequent high level of complexity in the Cripto regulatory pathway, whose imbalance causes tumors.
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July-2014
Volume 45 Issue 1

Print ISSN: 1019-6439
Online ISSN:1791-2423

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Spandidos Publications style
Giorgio E, Liguoro A, D'Orsi L, Mancinelli S, Barbieri A, Palma G, Arra C and Liguori GL: Cripto haploinsufficiency affects in vivo colon tumor development. Int J Oncol 45: 31-40, 2014.
APA
Giorgio, E., Liguoro, A., D'Orsi, L., Mancinelli, S., Barbieri, A., Palma, G. ... Liguori, G.L. (2014). Cripto haploinsufficiency affects in vivo colon tumor development. International Journal of Oncology, 45, 31-40. https://doi.org/10.3892/ijo.2014.2412
MLA
Giorgio, E., Liguoro, A., D'Orsi, L., Mancinelli, S., Barbieri, A., Palma, G., Arra, C., Liguori, G. L."Cripto haploinsufficiency affects in vivo colon tumor development". International Journal of Oncology 45.1 (2014): 31-40.
Chicago
Giorgio, E., Liguoro, A., D'Orsi, L., Mancinelli, S., Barbieri, A., Palma, G., Arra, C., Liguori, G. L."Cripto haploinsufficiency affects in vivo colon tumor development". International Journal of Oncology 45, no. 1 (2014): 31-40. https://doi.org/10.3892/ijo.2014.2412