Abstract
Binding of growth factors by cell-surface receptors is an essential means by which cell regulate normaltissue growth and differentiation. Exposure to growth factors is often transient, and our goal was to determine whether short-term exposure to insulin-like growth factor-1 (IGF-1) would lead to activation, assayed as cell proliferation, of mammary epithelial cells. The MAC-T cell line is an immortalized bovine mammary epithelial cell line, chosen as our model mammary cell line because of its known sensitivity to IGF-1. Using the Cytosensor Microphysiometer System, a biosensor capable of measuring extracellular acidification, we were able to measure activation of the cellsowing to IGF-1 addition in real time and found that peak acidification occurred in only 14 min. We show that this rapid response to IGF-1 is dose dependent and specific for IGF-1. A significant increase in [3H]thymidine incorporation by cells after a similar short-term exposure to IGF-1 suggests that the measured increase in extracellular acidification following IGF-1 addition is physiologically relevant. This technology offers a new, novel, and rapid means for the study of IGF-1 activity, as well as the screening of IGF-1 inhibitors, in mammary epithelial cells.
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References
Cohick, W. S. (1998). J. Dairy Sci. 81, 1769–1777.
Hovey, R. C., McFadden, T. B., and Akers, R. M. (1998). J. Mam. Gland Biol. Neoplasia 4, 53–68.
Kleinberg, D. L. (1998). Breast Cancer Res Tr. 47, 201–208.
Akers, R. M., McFadden, T. B., Purup, M., Vestergaard, M., Sejrsen, S., and Capuco, A. V. (2000). J. Mam. Gland Biol. Neoplasia 5, 43–51.
Forsyth, I. A., Gabai, G., and Morgan, G. (1999). J. Dairy Res. 66, 35–44.
Weber, M. S., Purup, S., Vestergaard, M., Ellis, S. E., Sondergard-Andersen, J., Akers, R. M., and Sejrsen, K. (1999). J. Endocrinol. 161, 365–373.
Weber, M. S., Purup, S., Vestergaard, M., Akers, R. M., and Sejrsen, K. (2000). J. Dairy Sci. 83, 30–37.
Gill, G. N. (1990). In: Peptide growth factors and their receptors I Sporn, M. B. and Roberts, A. B. (eds.), Springer-Verlag: New York.
Blakesley, V. A., Scrimgeour, A., Esposito, D., and LeRoith, D. (1996). Cytokine Growth Factor Res. 7, 153–159.
LeRoith, D., Werner, H., Beitner-Johnson, D., and Roberts, J. C. T. (1995). Endocr. Rev. 16, 143–163.
De Meyts P., Wallach B., Christoffersen, C. T., Ursø, B., Grønskov, K., Latus, L.-J., Yakushiji, F., Ilondo, M. M., and Shymko, R. M. (1994). Horm. Res. 42, 152–169.
Bornfeldt, K. E., Gidlf, R. A., Wasteson, A., Lake, M., Skottner, A., and Arnqvist, H. J. (1991). Diabetologia 34, 307–313.
Blum, W. F., Jenne, E. W., Reppin, F., Kietzmann, K., Ramke, M. B., and Bierich, J. R. (1989). Endocrinology 125: 766–772.
McCusker, R. H., Camacho-Hubner, C., Bayne, M. L., Cascieri, M. A., and Clemmon, D. R. (1990). J. Cell. Physiol. 144, 244–253.
Romagnolo, D., Akers, R. M., Byatt, J. C., Wong, E. A., and Turner, J. D. (1994). Endocr. J. 2, 375–384.
Huynh, H. T., Robitaille, G., and Turner, J. D. (1991). Exp. Cell. Res. 197, 191–199.
Zhao, X., McBride, B. W., Politis, I., Huynh, H. T., Akers, R. M., Burton, J. H., and Turner, J. D. (1992). J. Endocrinol. 134, 307–312.
Woodward, T. L., Akers, R. M., and Turner, J. D. (1994). Endocrine 2, 529–535.
McConnell, H. M., Owicki, J. C., Parce, J. W., Miller, D. L., Baxter, G. T., Wada, H. G., and Pitchford, S. (1992). Science 257, 1906–1912.
Baxter, G. T., Young, M.-L., Miller, D. L., and Owicki, J. C. (1994). Life Sci. 55, 573–583.
Chan, S. D. H., Antoniucci, D. M., Fok, K. S., Alajoki, M. L., Harkins, R. N., Thompson, S. A., and Wada, H. G., 1995). J Biol. Chem. 270, 22,608–22,613.
Pitchford, S., De Moor, K., and Glaeser, B. S. (1995). Am. J. Physiol. C936-C943.
Lauffenburger, D. A., Oerhtman, G.T., and Walker, L. (1998). Proc. Natl. Acad. Sci. USA 95, 15,368–15,373.
Weber, M. S., Boyle, P. L., Corl, B. A., Wong, E. A.; Gwazdauskas, F. C., and Akers, R. M. (1988). Endocrine 8, 251–259.
Romagnolo, D., Akers, R. M., Byatt, J. C., Wong, E. A., and Turner, J. D. (1994). Mol. Cell. Endocrinol. 102, 131–139.
Oehrtman, G. T., Wiley, H. S., and Lauffenburger, D. A. (1998). Biotechnol. Bioeng. 57, 571–582.
Purup, S., Sejrsen, K., Foldager, J., and Akers, R. M. (1993), J. Endocrinol 139, 19–26.
Dickinson, K. E.J., Cohen, R. B., Skwish, S., Delaney, C. L., Serafino, R. P., Poss, M. A., Gu, Z., Ryono, D. E., Moreland, S., and Powell, J. R. (1994). Brit. J. Pharmacol. 113, 179–189.
Brown, M. J., Wood, M. D., Coldwell, M. C., and Bristow, D. R. (1997). Brit. J. Pharmacol. 121, 71–76.
Chow, J. C., Condorelli, G., and Smith, R. J. (1998). J. Biol. chem. 273, 4672–4680.
Esposito, D. L., Blakesley, V. A., Koval, A. P., Scrimgeour, A. G., and LeRoith, D. (1997). Endocrinology 138, 2979–2988.
Kim, B., Cheng, H.-L.; Margolis, B., and Feldman, E. L. (1998). J. Biol. Chem. 273, 34,543–34,550.
Yau, L., Lukes, H., McDiarmid H., Werner, J., and Zahrakda, P. (1999). Eur. J. Biochem. 266, 1147–1157.
Duan, C., Liimatta, M. B., and Bottum, O. L. (1999). J. Biol. Chem. 274, 37,147–37,153.
Laping, N. J., Olson, B. A., DeWolf, R. E., Albrightson, C. R., Fredrickson, T., King, C., Chirivella, M., Ziyadeh, F. N., and Nambi, P. (1998). Biochem. Pharmacol. 55, 227–234.
Hopkins, M. A., Rosser, M. P., Fernandes, P. B., et al. (1997). J. Neurosci. Methods 72, 167–174.
Twiss, J. L., Wada, H. G., Fok, K. S., Chan, S. D. H., Verity, A. N., Baxter, G. T., Shooter, E. M., and Sussman, H. H. (1998). J. Neurosci. Res. 51, 442–453.
Cohick, W. S. and Clemmons, D. R. (1993). Annu. Rev. Physiol. 55, 131–153.
Valentinis, B., Bhala, A., DeAngelis, T., Baserga, R., and Cohen, P. (1995). Mol. Endocrinol. 9, 361–367.
Rajah, R., Valentinis, B., and Cohen, P. (1997). J. Biol. Chem. 272, 12,181–12,188.
Lauffenburger, D. A. and Linderman, J. J. (1993). Receptors: models for binding, trafficking, and signaling. Oxford University Press: New York.
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Robinson, R.M., Akers, R.M. & Forsten, K.E. Real-time detection of insulin-like growth factor-1 stimulation of the MAC-T bovine mammary epithelial cell line. Endocr 13, 345–352 (2000). https://doi.org/10.1385/ENDO:13:3:345
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DOI: https://doi.org/10.1385/ENDO:13:3:345