Osteopontin is an autocrine mediator of hepatocyte growth factor-induced invasive growth

E. Medico, A. Gentile, C. L. Celso, T. A. Williams, G. Gambarotta, L. Trusolino, P. M. Comoglio

Research output: Contribution to journalArticle

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Abstract

In epithelial cells, hepatocyte growth factor (HGF) activates a genetic program involving cell-cell dissociation ("scattering"), growth and invasiveness. The full program is not elicited by other growth factors like epidermal growth factor, and is aberrantly activated during cancer progression to the invasive-metastatic phenotype. To identify genes involved in the onset of invasive growth, we explored by cDNA microarrays the in vitro transcriptional response to HGF of mouse embryo liver cells. We identified osteopontin (OPN), a secreted matrix protein, as a major HGF transcriptional target. The wave of OPN induction is maximal at 6 h, in concomitance with the initiation of scattering, and is specific, because no other matrix protein among those explored by the microarray is affected. Interestingly, HGF, but not epidermal growth factor, promotes cell adhesion to OPN via the CD44 receptor. Scattering is significantly impaired by antibodies against OPN and CD44; conversely, constitutive OPN overexpression dramatically increases the motile and invasive responses to HGF, leading to disruption of the ordered morphogenetic program triggered by this ligand.

Original languageEnglish
Pages (from-to)5861-5868
Number of pages8
JournalCancer Research
Volume61
Issue number15
Publication statusPublished - Aug 1 2001

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Osteopontin
Hepatocyte Growth Factor
Growth
Epidermal Growth Factor
Oligonucleotide Array Sequence Analysis
Cell Adhesion
Intercellular Signaling Peptides and Proteins
Proteins
Embryonic Structures
Epithelial Cells
Ligands
Phenotype
Antibodies
Liver
Genes
Neoplasms

ASJC Scopus subject areas

  • Cancer Research
  • Oncology

Cite this

Medico, E., Gentile, A., Celso, C. L., Williams, T. A., Gambarotta, G., Trusolino, L., & Comoglio, P. M. (2001). Osteopontin is an autocrine mediator of hepatocyte growth factor-induced invasive growth. Cancer Research, 61(15), 5861-5868.

Osteopontin is an autocrine mediator of hepatocyte growth factor-induced invasive growth. / Medico, E.; Gentile, A.; Celso, C. L.; Williams, T. A.; Gambarotta, G.; Trusolino, L.; Comoglio, P. M.

In: Cancer Research, Vol. 61, No. 15, 01.08.2001, p. 5861-5868.

Research output: Contribution to journalArticle

Medico, E, Gentile, A, Celso, CL, Williams, TA, Gambarotta, G, Trusolino, L & Comoglio, PM 2001, 'Osteopontin is an autocrine mediator of hepatocyte growth factor-induced invasive growth', Cancer Research, vol. 61, no. 15, pp. 5861-5868.
Medico E, Gentile A, Celso CL, Williams TA, Gambarotta G, Trusolino L et al. Osteopontin is an autocrine mediator of hepatocyte growth factor-induced invasive growth. Cancer Research. 2001 Aug 1;61(15):5861-5868.
Medico, E. ; Gentile, A. ; Celso, C. L. ; Williams, T. A. ; Gambarotta, G. ; Trusolino, L. ; Comoglio, P. M. / Osteopontin is an autocrine mediator of hepatocyte growth factor-induced invasive growth. In: Cancer Research. 2001 ; Vol. 61, No. 15. pp. 5861-5868.
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