Abstract
The stimulation of the uncoupling protein-2 gene (ucp2) by thyroid hormone (triiodothyronine [T3]) in vivo is variable, suggesting complex interactions and even the possibility of indirect effects. We investigated the effect of T3 on ucp2 expression in L6 myotubules. Alone, T3 did not significantly stimulate ucp2 expression in L6 cells, but it amplified the stimulation by thiazolidinediones (TZDs). L6 cells expressed both α1 and β1 thyroid hormone receptors and the data were consistent with the effect being mediated by these receptors. T3 also enhanced the stimulation of ucp2 by the nonselective peroxisome proliferator-activated receptor (PPAR) ligands bezafibrate and carbacyclin, but not that by oleic acid or norepinephrine. L6 cells expressed PPARβ and PPARγ, but not PPARα. As short as a 1-h preexposure of L6 cells to T3 was sufficient to amplify the effect of PPAR ligands. Neither transcription nor translation was needed for this effect of T3. T3 did not affect the t 1/2 of UCP2 mRNA. The histone deacetylases inhibitor trichostatin A (TSA) stimulated the expression of ucp2 but did not add to the effect of T3 nor did this hormone enhance the effect of TSA. These results suggest that T3 selectively enhances the transcriptional stimulation of ucp2 by TZDs and nonselective PPAR ligands by priming the gene to a transactivating signal(s) generated by such ligands.
Similar content being viewed by others
References
Ricquier, D. and Bouillaud, F. (2000). J. Physiol. 529(Pt. 1:3-10), 3–10.
Arsenijevic, D., Onuma, H., Pecqueur, C., et al. (2000). Nat. Genet. 26, 435–439.
Zhang, C. Y., Baffy, G., Perret, P., et al. (2001). Cell 105, 745–755.
Simoneau, J. A., Kelley, D. E., Neverova, M., and Warden, C. H. (1998). FASEB J. 12, 1739–1745.
Millet, L., Vidal, H., Andreelli, F., et al. (1997). J. Clin. Invest. 100, 2665–2670.
Boivin, M., Camirand, A., Carli, F., Hoffer, L. J., and Silva, J. E. (2000). J. Clin. Endocrinol. Metab. 85, 1975–1983.
Yen, P. M. (2001). Physiol. Rev. 81, 1097–1142.
Gong, D. W., He, Y. F., Karas, M., and Reitman, M. (1997). J. Biol. Chem. 272, 24129–24132.
Larkin, S., Mull, E., Miao, W., et al. (1997). Biochem. Biophys. Res. Commun. 240, 222–227.
Barbe, P., Larrouy, D., Boulanger, C., et al. (2000). FASEB J. 15, 13–15.
Damon, M., Vincent, A., Lombardi, A., and Herpin, P. (2000). Gene 246, 133–141.
Jekabsons, M. B., Gregoire, F. M., Schonfeld-Warden, N. A., Warden, C. H., and Horwitz, B. A. (1999). Am. J. Physiol. 277, E380-E389.
Masaki, T., Yoshimatsu, H., Kakuma, T., Hidaka, S., Kurokawa, M., and Sakata, T. (1997). FEBS Lett. 418, 323–326.
Samec, S., Seydoux, J., and Dulloo, A. G. (1998). Diabetes 47, 1693–1698.
Silva, J. E. and Rabelo, R. (1997). Eur. J. Endocrinol. 136, 251–264.
Koenig, R. J. and Smith, R. J. (1985). J. Clin. Invest. 76, 878–881.
Camirand, A., Marie, V., Rabelo, R., and Silva, J. E. (1998). Endocrinology 139, 428–431.
Aubert, J., Champigny, O., Saintmarc, P., et al. (1997). Biochem. Biophys. Res. Commun. 238, 606–611.
Strobel, A., Siquier, K., Zilberfarb, V., Strosberg, A. D., and Issad, T. (1999). Diabetologia 42, 527–533.
Viguerie-Bascands, N., Saulnier-Blache, J. S., Dandine, M., Dauzats, M., Daviaud, D., and Langin, D. (1999). Biochem. Biophys. Res. Commun. 256, 138–141.
Itoh, H., Doi, K., Tanaka, T., et al. (1999). Clin. Exp. Pharmacol. Physiol. 26, 558–560.
Hattori, Y., Akimoto, K., and Kasai, K. (2000). Biochem. Biophys. Res. Commun. 273, 1144–1149.
Law, R. E., Goetze, S., Xi, X. P., et al. (2000). Circulation 101, 1311–1318.
López-Solache, I., Marie, V., Vignault, E., Camirand, A., and Silva, J. E. (2002). Endocrine 19, 197–208.
Nagase, I., Yoshida, S., Canas, X., et al. (1999). FEBS Lett. 461, 319–322.
Medvedev, A. V., Snedden, S. K., Raimbault, S., Ricquier, D., and Collins, S. (2001). J. Biol. Chem. 276, 10817–10823.
Zhang, J. and Lazar, M. A. (2000). Annu. Rev. Physiol. 62, 439–466.
Wu, Y. and Koenig, R. J. (2000). Trends Endocrinol. Metab. 11, 207–211.
Bianco, A. C., Sheng, X., and Silva, J. E. (1988). J. Biol. Chem. 263, 18168–18175.
Rabelo, R., Schifman, A., Rubio, A., Sheng, X., and Silva, J. E. (1995). Endocrinology 136, 1003–1013.
Rabelo, R., Reyes, C., Schifman, A., and Silva, J. E. (1996). Endocrinology 137, 3478–3487.
Mariash, C. N., Seelig, S., Schwartz, H. L., and Oppenheimer, J. H. (1986). J. Biol. Chem. 261, 9583–9586.
Cunningham, B. A., Moncur, J. T., Huntington, J. T., and Kinlaw, W. B. (1998). Thyroid 8, 815–825.
Koo, S. H. and Towle, H. C. (2000). J. Biol. Chem. 275, 5200–5207.
Khayat, Z. A., Tsakiridis, T., Ueyama, A., Somwar, R., Ebina, Y., and Klip, A. (1998). Am. J. Physiol. 275, C1487-C1497.
Pecqueur, C., Alves-Guerra, M. C., Gelly, C., et al. (2001). J. Biol. Chem. 276, 8705–8712.
Samuels, H. H., Stanley, F., and Casanova, J. (1979). Endocrinology 105, 80–85.
Chomczynski, P. and Sacchi, N. (1987). Anal. Biochem. 162, 156–159.
Zhou, Y. T., Shimabukuro, M., Koyama, K., et al. (1997). Proc. Natl. Acad. Sci. USA 94, 6386–6390.
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
López-Solache, I., Marie, V., Camirand, A. et al. Regulation of uncoupling protein-2 mRNA in L6 myotubules. Endocr 19, 209–217 (2002). https://doi.org/10.1385/ENDO:19:2:209
Received:
Revised:
Accepted:
Issue Date:
DOI: https://doi.org/10.1385/ENDO:19:2:209