Abstract
Follicle-stimulating hormone (FSH) is a member of the glycoprotein hormone family that regulates gametogenesis and steroidogenesis. Glycoprotein hormones signal through a unique class of G-protein-coupled receptors (GPCRs) that have a long extracellular domain (ECD), which is the primary site for hormone binding. The hFSHR-ECD was expressed in insect cells as a C-terminal, epitope-tagged protein resulting in production of soluble active receptor in the intracellular compartment and in the secreted culture medium. Coexpression of hFSHR-ECD with FSHβ or FSHα/β increased the secretion of the truncated receptor. Pharmacological studies to assess ligand-receptor interactions without the transmembrane domains showed higher affinity values (K Ds) for [125l]hFSH using mammalian-expressed full-length receptor, secreted hFSHR-ECD, or secreted hFSHR-ECD coexpressed with FSHβ, whereas the K D value for hFSHR-ECD coexpressed with FSHα/β subunits showed lower affinity. Competition of other glycoprotein hormones for secreted hFSHR-ECD coexpressed with FSHβ or mammalian full-length hFSHR resulted in similar binding profiles, indicating analogous pharmacology. Finally, we have demonstrated that a small molecule, suramin, which has been reported to interact with the mammalian full-length FSHR, competes for the binding of [1251]hFSH by interacting directly at the hFSHR-ECD.
Similar content being viewed by others
References
Sprengel, R., Braun, T., Nikolics, K., Segaloff, D. L., and Seeburg P. H. (1990) Mol. Endocrinol. 4, 525–530.
Dattatreyamurty, B. and Reichert, L., Jr. (1993) Mol. Cell. Endocrinol. 93, 39–46.
Mills, A., Allet, B., Bernard, A., Chabert, C., Brandt, E., Cavegn, C., et al. (1993) FEBS Lett. 320, 130–134.
Mouillac, B., Caron, M., Bonin, H., Dennis, M., and Bouvier, M. (1992) J. Biol. Chem. 267, 21,733–21,737.
Ng, G. Y., George, S. R., Zastawny, R. L, Caron, M., Bouvier, M., Dennis, M., and O'Dowd, B. F. (1993) Biochemistry 32, 11,727–11,733.
Parker, E. M., Grisel, D. A., Iben, L. G., Nowak, H. P., Mahle, C. D., Yocca, F. D., et al. (1994) Eur. J. Pharmacol. 268, 43–53.
Richardson, R. M. and Hosey, M. M. (1992) J. Biol. Chem. 267, 22,249–22,255.
Schreurs, J., Yamamoto, R., Lyons, J., Munemitsu, S., Conroy, L., Clark, R., et al. (1995) J. Neurochem. 65, 1622–1631.
Woodcock, C., Graber, S. G., Rooney, B. C., and Strange, P. G. (1995). Biochem. Soc. Trans. 23, 93S.
Christophe, S., Robert, P., Maugain, S., Bellet, D., Koman, A., and Bidart, J. M. (1993) Biochem. Biophys. Res. Commun. 196, 402–408.
Liu, X., DePasquale, J. A., Griswold, M. D., and Dias, J. A. (1994) Endocrinology 135, 682–691.
Huang, G. C., Page, M. J., Nicholson, L. B., Collison, K. S., McGregor, A. M., and Banga, J. P. (1993) Mol. Endocrinol. 10, 127–142.
Boniface, J. J. and Reichert, L. E., Jr. (1990) Science 247, 61–64.
Arey, B. J., Stevis, P. E., Deecher, D. C., Shen, E. S., Frail, D. E., Negro-Vilar, A., et al. (1997) Mol. Endocrinol. 11, 517–526.
Watson, S. and Arkinstall, S. (1994), The G-Protein Linked Receptor Factsbook, Academic: San Diego, CA, p. 427.
Daugherty, R. L., Cockett, A. T., Schoen, S. R., and Sluss, P. M. (1992) J. Urol. 147, 727–732.
Kobilka, B. K., Kobilka, T. S., Daniel, K., Regan, J. W., Caron, M. G., and Lefkowitz R. J. (1988) Science 240, 1310–1316.
Strader, C. D., Candelore, M. R., Hill, W. S., Dixon, R. A., and Sigal, I. S. (1989) J. Biol. Chem. 264, 16,470–16,477.
Strader, C. D., Sigal, I. S., and Dixon, R. A. (1989) FASEB 3, 1825–1832.
Tsai-Morris, C. H., Buczko, E., Wang, W., and Dufau, M. L. (1990) J. Biol. Chem. 265, 19,385–19,388.
Xie, Y. B.; Wang, H., and Segaloff, D. L. (1990) J. Biol. Chem. 265, 21,411–21,414.
Seetharamaiah, G. S., Kurosky, A., Desai, R. K., Dallas, J. S., and Prabhakar, B. S. (1994) Endocrinology 134, 549–554.
Chazenbalk, G. D. and Rapoport, B. (1995) J. Biol. Chem. 270, 1543–1549.
Thomas, D. M. and Segaloff, D. L. (1994) Endocrinology 135, 1902–1912.
Ji, I. and Ji, T. H. (1991) J. Biol. Chem. 266, 13,076–13,079.
Ji, I. and Ji, T. H. (1995) J. Biol. Chem. 270, 15,970–15,973.
Lei, Z. M., Toth, P., Rao, C. V., and Pridham, D. (1993). J. Clin. Endo. Metab. 77, 863–872.
Author information
Authors and Affiliations
Corresponding author
Additional information
Both authors contributed equally to this manuscript.
Rights and permissions
About this article
Cite this article
Stevis, P.E., Deecher, D.C., Lopez, F.J. et al. Pharmacological characterization of soluble human FSH receptor extracellular domain. Endocr 10, 153–160 (1999). https://doi.org/10.1385/ENDO:10:2:153
Received:
Revised:
Accepted:
Issue Date:
DOI: https://doi.org/10.1385/ENDO:10:2:153