Abstract
1. A high expression of angiotensin II receptors and of angiotensin-converting enzyme (ACE) activity was detected in confluent NIH 3T3 fibroblasts.
2. Characterization with selective ligands, dithiothreitol, and GTPγS, indicated that only the AT2 subtype was expressed.
3. AT2 receptors and ACE expression were strictly dependent on the cell density and growth phase of the cells, with AT2 receptors being expressed earlier than ACE. In contrast, high expression of AT2 receptors irrespective of their growth state was observed in NIH 3T3 cells lacking contact inhibition upon neoplastic transformation with ras.
4. Our results imply a possible relation of AT2 receptors to cell growth and cell–cell contact.
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REFERENCES
Bottari, S. P., de Gasparo, M., Steckelings, U. M., and Levens, N. R. (1993). Angiotensin II receptor subtypes: Characterization, signalling mechanisms, and possible physiological implications. Frontiers Neuroendocrinol. 14:123–171.
Bumpus, F. M., Catt, K. J., Chiu, A. T., de Gasparo, M., Goodfriend, T., Husain, A., Peach, M. J., Taylor, D. G., Jr., and Timmermans, P. B. M. W. M. (1991). Nomenclature for angiotensin receptors: A report of the nomenclature committee of the council for high blood pressure research. Hypertension 17:720–723.
Chiu, A. T., Duncia, J. V., McCall, D. E., Wong, P. C., Price, W. A., Thoolen, M. J. M. C., Carini, D. J., Johnson, A. L., and Timmermans, P. B. M. W. M. (1989a). Nonpeptide angiotensin II receptor antagonists. III. Structure-function studies. J. Pharmacol. Exp. Ther. 250:867–874.
Chiu, A. T., Herblin, W. F., McCall, D. E., Ardecky, R. J., Carini, D. J., Duncia, J. V., Pease, L. J., Wong, P. C., Wexler, R. R., Johnson, A. L., and Timmermans, P. B. M. W. M. (1989b). Identification of angiotensin II receptor subtypes. Biochem. Biophys. Res. Commun. 165:196–203.
de Gasparo, M., Husain, A., Alexander, W., Catt, K. J., Chiu, A. T., Drew, M., Goodfriend, T., Harding, J. W., Inagami, T., and Timmermans, P. B. M. W. M. (1995). Proposed update of angiotensin receptor nomenclature. Hypertension 25:924–927.
Dudley, D. T., and Summerfelt, R. M. (1993). Regulated expression of angiotensin II (AT2) binding sites in R3T3 cells. Regul Peptides 11:13–28.
Dudley, D. T., Hubbell, S. E. E., and Summerfelt, R. M. (1991). Characterization of angiotensin II (AT2) binding sites in R3T3 cells. Mol. Pharmacol. 40:360–367.
Dzau, V. J., Sasamura, H., and Hein, L. (1993). Heterogeneity of angiotensin synthetic pathways and receptor subtypes: Physiological and pharmacological implications. J. Hypertens. 11:S13-S18.
Griendling, K. K., Murphy, T. J., and Alexander, R. W. (1993). Molecular biology of the renin-angiotensin system. Circulation 87:1816–1828.
Harada, H., Kitagawa, M., Tanaka, N., Yamamoto, H., Harada, K., Ishihara, M., and Taniguchi, T. (1993). Anti-oncogenic and oncogenic potentials of transcriptional regulators IRF-1 and-2. Science 259:971–974.
Hopper, N. M. (1991). Angiotensin converting enzyme: Implications from molecular biology for its physiological functions. Int. J. Biochem. 23:641–647.
Horiuchi, M., Koike, G., Yamada, T., Mukoyama, M., Nakajima, M., and Dzau, V. J. (1995). The growth-dependent expression of angiotensin II type 2 receptor is regulated by transcription factors interferon regulatory factor-1 and-2 J. Biol. Chem. 270:20225–20230.
Ichiki, T., Kambayashi, Y., and Inagami, T. (1995). Multiple growth factors modulate mRNA expression of angiotensin of angiotensin II type-2 receptor in R3T3 cells. Cir. Res. 77:1070–1076.
Inagami, T., and Harris, R. C. (1993). Molecular insights into angiotensin II receptor subtypes. TIPS 8:215–218.
Jainchill, J. L., Aaronson, S. A., and Todaro, G. J. (1969). Murine sarcoma and leukemia virus: Assay using clonal lines of contact-inhibited mouse cells. J. Virol. 4:549–553.
Kalinec, G., Nazarali, A. J., Hermouet, S., Xu, N., and Gutkind, J. S., (1992). Mutated Ó subunit of the Gq protein induces malignant transformation in NIH 3T3 cells. Mol. Cell. Biol. 12:4687–4693.
Kambayashi, Y., Bardhan, S., and Inagami, T. (1993a). Peptide growth factors markedly decrease the ligand binding of angiotensin II type 2 receptor in rat cultured vascular smooth muscle cells. Biochem. Biophys. Res. Commun. 194:478–482.
Kambayashi, Y., Bardhan, S., Takahashi, K., Tsuzuki, S., Inui, H., Hamakubo, T., and Inagami, T. (1993b). Molecular cloning of a novel angiotensin II receptor isoform involved in phosphotyrosine phosphatase inhibition. J. Biol. Chem. 268:24543–24546.
Krulewitz, A. H., Baur, W. E., and Fanburg, B. L. (1984). Hormonal influence on endothelial cell angiotensin-converting enzyme activity. Am. J. Physiol. 247:C163-C168.
Leung, K. H., Roscoe, A., Smith, R. D., Timmermans, P. B. M. W. M., and Chiu, A. T. (1992). Characterization of biochemical response of angiotensin II (AT2) binding sites in the rat pheochromocytoma PC12W cells. Eur. J. Pharmacol. 227:63–67.
Michels, K. M., Heemskerk, F. M. J., and Saavedra, J. M. (1993). Selective changes in angiotensin II AT1 and AT2 receptor subtypes in the rat superior colliculus following eye enucleation. Neuroscience 58:835–844.
Mukoyama, M., Nakajima, M., Horiuchi, M., Sasamura, H., Pratt, R. E., and Dzau, V. J. (1993). Expression cloning of type 2 angiotensin II receptor reveals a unique class of seven transmembrane receptors. J. Biol. Chem. 268:24539–24542.
Munson, P. J. (1983). LIGAND: A computerized analysis of ligand binding data. In Methods in Enzymology, (Langone, J. J., and Van Vunakis, H., eds.), Academic Press, New York, Vol. 92, Part E, pp. 543–576. 1983.
Nahmias, C., and Strosberg, A. D. (1995). The angiotensin AT2 receptor: Searching for signal-transduction pathways and physiological function. Trends Pharmacol. Sci. 16:223–225.
Nunes-Mamede, M. L., De Mello, F. G., and Martins, A. R. (1990). In ovo and in culture development of chick retinal angiotensin converting enzyme. Neurosci. Lett. 109:174–179.
Powell, J., Clozel, J. P., Muller, R. K. M., Kuhn, H., Hefti, F., Hosang, M., and Baumgartner, H. R. (1989). Inhibitors of angiotensin-converting enzyme prevent myointimal proliferation after vascular injury. Science 245:186–188.
Pucell, A. G., Hodges, J. C., Sen, I., Bumpus, F. M., and Husain, A. (1991). Biochemical properties of the ovarian granulosa cell type 2-angiotensin II receptor. Endocrinology 128:1947–1959.
Rorhbach, M. S. (1978). [Glycine–1–14]hippuryl-histidyl-L-leucine: A substrate for the radiochemical assay of angiotensin-converting-enzyme. Anal. Biochem. 84:272–276.
Saavedra, J. M. (1992). Brain and pituitary angiotensin. Endocr. Rev. 13:329–380.
Schelling, P., Fischer, H., and Ganten, D. (1991). Angiotensin and cell growth: A link to cardiovascular hypertrophy. J. Hypertens. 9:3–15.
Shai, S.-Y., Fishel, R. S., Martin, B. M., Berk, B. C., and Bernstein, K. E. (1992). Bovine angiotensin converting enzyme cDNA cloning and regulation. Circ. Res. 70:1274–1281.
Smith, R. D. (1993). Identification of AT2 receptors on Swiss 3T3 cells. Biochem. Mol. Biol. Int. 31:975–982.
Stoll, M., Muscha Steckelings, U., Paul, M., Bottari, S. P., Metzger, R., and Unger, T. (1995). The angiotensin AT2-receptor medites inhibition of cell proliferation in coronary endothelial cells. J. Clin. Invest. 95:651–657.
Tanaka, N., Ishihara, M., Kitagawa, M., Harada, H., Kimura, T., Matsuyama, T., Lamphier, M. S., Aizawa, S., Mak, T. W., and Taniguchi, T. (1994). Cellular commitment to oncogene-induced transformation or apoptosis is dependent on the transcription factor IRF-1. Cell 77:829–839.
Tang, S.-S., Rogg, H., Schumacher, R., and Dzau, V. J. (1992). Characterization of nuclear angiotensin II binding sites in rat liver and comparison with plasma membrane receptors. Endocrinology 131:374–380.
Timmermans, P. B. M. W. M., Wong, P. C., Chiu, A. T., Herblin, W. F., Benfield, P., Carini, D. J., Lee, R. J., Wexler, R. R., Saye, J. A. M., and Smith, R. D. (1993). Angiotensin II receptors and angiotensin II receptor antagonists. Pharmacol. Rev. 45:205–251.
Tsutsumi, K., and Saavedra, J. M. (1992). Heterogeneity of angiotensin II AT2 receptors in the rat brain. Mol. Pharmacol. 41:290–297.
Whitebread, S., Mele, M., Kamber, B., and de Gasparo, M. (1989). Preliminary biochemical characterization of two angiotensin receptor subtypes. Biochem. Biophys. Res. Commun. 163:284–291.
Yang, H. Y. T., and Neff, N. H. (1973). Differential distribution of angiotensin-converting enzyme in the anterior and posterior lobe of the rat pituitary. J. Neurochem. 21:1035–1036.
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Heemskerk, F.M.J., Zorad, S., Xu, N. et al. Characterization of AT2 Receptor Expression in NIH 3T3 Fibroblasts. Cell Mol Neurobiol 19, 277–288 (1999). https://doi.org/10.1023/A:1006985329240
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DOI: https://doi.org/10.1023/A:1006985329240