Expression of transforming growth factor-α in hepatoblastoma

Andrés Kiss, Ágota Szepesi, G. Lotz, P. Nagy, Z. Schaff

Research output: Contribution to journalArticle

15 Citations (Scopus)

Abstract

BACKGROUND. Transforming growth factor-α (TGF-α) is a potent stimulator of cell proliferation in the liver and in liver tumors; however, its significance and association with hepatocyte proliferation remains unclear. METHODS. Expression of TGF-α and proliferation markers, such as proliferating cell nuclear antigen (PCNA) and cyclin A, were studied and correlated with each other in samples of tumor and surrounding liver tissue taken from nine patients with hepatoblastoma. An avidin-biotin-peroxidase immunohistochemical method was used for detection of TGF-α, PCNA, and cyclin A, and in situ hybridization was used to detect TGF-α mRNA. RESULTS. Two types of tumor cells of epithelial origin were distinguished based on the expression of TGF-α protein and RNA. The more differentiated 'fetal' phenotype had a high expression of TGF-α and correlated with a low expression of proliferation markers. The less differentiated 'embryonal' phenotype had low TGF-α expression and high proliferation activity. CONCLUSIONS. The expression of TGF-α is associated with a certain morphologic phenotype of tumor cells in hepatoblastoma; higher expression can be detected in more differentiated tumor cells. The negative correlation between the expression of TGF-α and proliferation markers suggests that the less differentiated embryonal cells do not depend on growth stimulation provided by TGF-α.

Original languageEnglish
Pages (from-to)690-697
Number of pages8
JournalCancer
Volume83
Issue number4
DOIs
Publication statusPublished - Aug 15 1998

Fingerprint

Hepatoblastoma
Transforming Growth Factors
Cyclin A
Proliferating Cell Nuclear Antigen
Neoplasms
Phenotype
Liver
Avidin
Biotin
Peroxidase
In Situ Hybridization
Hepatocytes
Epithelial Cells
Cell Proliferation
RNA

Keywords

  • Cell proliferation
  • Cyclin A
  • Hepatoblastoma
  • Transforming growth factor-α

ASJC Scopus subject areas

  • Cancer Research
  • Oncology

Cite this

Expression of transforming growth factor-α in hepatoblastoma. / Kiss, Andrés; Szepesi, Ágota; Lotz, G.; Nagy, P.; Schaff, Z.

In: Cancer, Vol. 83, No. 4, 15.08.1998, p. 690-697.

Research output: Contribution to journalArticle

Kiss, Andrés ; Szepesi, Ágota ; Lotz, G. ; Nagy, P. ; Schaff, Z. / Expression of transforming growth factor-α in hepatoblastoma. In: Cancer. 1998 ; Vol. 83, No. 4. pp. 690-697.
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