TGF-α can act as morphogen and/or mitogen in a colon-cancer cell line

D. Liu, G. Gagliardi, M. M. Nasim, M. R. Alison, T. Oates, E. N. Lalani, G. W H Stamp, M. Pignatelli

Research output: Contribution to journalArticle

24 Citations (Scopus)

Abstract

Transforming growth factor alpha (TGF-α) has multifunctional biological effects on a variety of mesenchymal and epithelial cells. It is a potent mitogen for a number of normal and transformed cell types, regulates extracellular matrix (ECM) production and promotes breast, kidney and lung morphogenesis. To clarify the role of ECM proteins in the morphogenetic and mitogenic effects of TGF-α, we have used a human colon carcinoma cell line (SW1222) which expresses EGF receptor. Here we show that TGF-α at 1 ng/ml increases the proliferation of SW1222 cells, but only when they are cultured on plastic rather than collagen-coated plates. Higher concentrations of TGF- α (10 ng/ml) did not increase cell proliferation but significantly enhanced the crypt-like glandular differentiation when cells were grown in 3- dimensional collagen gel (p = 0.027). These effects were accompanied by increased expression of α2β1 and α3β1 integrin molecules, which are receptors for extracellular matrix proteins, and by a statistically significant increase in binding of SW1222 cells to type-I collagen. The effects of TGF-α both on binding to type-I collagen and on morphological differentiation in 3-dimensional collagen gel were inhibited by monoclonal antibodies recognizing the α2β1 integrin. These data indicate that the morphogenetic or mitogenic activities of TGF-α are critically dependent on cellular interactions with extracellular matrix proteins and are primarily mediated by the α2β1 integrin receptor. Inappropriate expression of this growth factor, seen in tumours whose cell-matrix interactions are greatly impaired, could have deleterious effects on the maintenance of normal tissue architecture and growth control.

Original languageEnglish
Pages (from-to)603-608
Number of pages6
JournalInternational Journal of Cancer
Volume56
Issue number4
Publication statusPublished - 1994
Externally publishedYes

Fingerprint

Transforming Growth Factor alpha
Mitogens
Colonic Neoplasms
Cell Line
Extracellular Matrix Proteins
Integrins
Collagen
Collagen Type I
Gels
Cell Proliferation
Morphogenesis
Epidermal Growth Factor Receptor
Cell Communication
Plastics
Extracellular Matrix
Cell Differentiation
Intercellular Signaling Peptides and Proteins
Colon
Breast
Epithelial Cells

ASJC Scopus subject areas

  • Cancer Research
  • Oncology

Cite this

Liu, D., Gagliardi, G., Nasim, M. M., Alison, M. R., Oates, T., Lalani, E. N., ... Pignatelli, M. (1994). TGF-α can act as morphogen and/or mitogen in a colon-cancer cell line. International Journal of Cancer, 56(4), 603-608.

TGF-α can act as morphogen and/or mitogen in a colon-cancer cell line. / Liu, D.; Gagliardi, G.; Nasim, M. M.; Alison, M. R.; Oates, T.; Lalani, E. N.; Stamp, G. W H; Pignatelli, M.

In: International Journal of Cancer, Vol. 56, No. 4, 1994, p. 603-608.

Research output: Contribution to journalArticle

Liu, D, Gagliardi, G, Nasim, MM, Alison, MR, Oates, T, Lalani, EN, Stamp, GWH & Pignatelli, M 1994, 'TGF-α can act as morphogen and/or mitogen in a colon-cancer cell line', International Journal of Cancer, vol. 56, no. 4, pp. 603-608.
Liu D, Gagliardi G, Nasim MM, Alison MR, Oates T, Lalani EN et al. TGF-α can act as morphogen and/or mitogen in a colon-cancer cell line. International Journal of Cancer. 1994;56(4):603-608.
Liu, D. ; Gagliardi, G. ; Nasim, M. M. ; Alison, M. R. ; Oates, T. ; Lalani, E. N. ; Stamp, G. W H ; Pignatelli, M. / TGF-α can act as morphogen and/or mitogen in a colon-cancer cell line. In: International Journal of Cancer. 1994 ; Vol. 56, No. 4. pp. 603-608.
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