Summary
Dynorphin A (1–10) was radioiodinated directly via electrophilic substitution of the reactive tyrosine. The uptake of this labelled dynorphin in glioma cell cultures was measured. Tracer uptake was compared with the non-specific tumour tracer T1-201. TI-201 showed a time independent uptake over the whole incubation time of 4 hours. In contrast, increasing accumulation of radioactivity was found with I-125 labelled dynorphin. The increasing uptake over time may be evidence for a specific binding process with a possible potential for receptor imaging in man.
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Breeman, W.A., Hofland, L.J., Bakker, W.H., Pluijm, M. van der, Koetsveld, P.M. van, Jong, M. de, Setyono-Han, B., Kwekkeboom, D.J., Visser, T.J., Lamberts, S.W.J. and Krenning, E.P. (1993) Radioiodinated somatostatin analogue RC-160: preparation, biological activity, in vivo application in rats and comparison with II-123-Tyr-31octreotide. Eur. J. Nucl. Med. 20: 1089–1094.
Fischman, A.J., Babich, J.W. and Strauss, H.W. (1993) A ticket to ride: peptide radiopharmaceuticals. J. Nucl. Med. 34: 2253–2263.
Fracker, P.J. and Speck, J.C. (1978) Protein and cell membrane iodination with a sparingly soluble chlor- amide 1,3,4,6-tetrachloro-3a-6a-diphenylglycoluril. Biochem. Biophys. Res. Commun. 80: 849–857.
Lambert, R., Willenbrock R., Tremblay J., Bavaria, G., Langlois, Y., Hogan, K., Tartaglia, D., Flanagan R.J. and Hamet, P. (1994) Receptor imaging with atrial natriuretic peptide, part 1: high specific activity iodine-123-atrial natriuretic peptide. J. Nucl. Med. 35: 628–637.
Lamberts, S.W.J., Bakker, W.H., Reubi, H.C. and Krenning, E.P. (1990) Somatostatin receptor scintigraphy in the localization of endocrine tumours. N. Eng. J. Med. 323: 1246–1249.
Thakur, M.L. (1995) Radiolabelled peptides: now and the future. Nucl. Med. Comm. 16: 724–732.
Virgolini, I., Raderer M., Kurtaran A. Angelberger, P., Banyai, S., Yang, Q., Li, S., Banyai, M., Pidlich, J., Niederle, B., Scheithauer, W. and Valent, P. (1994) Vasoactive intestinal peptide-receptor imaging for the localization of intestinal adenocarcinomas and endocrine tumours. N. Eng. J. Med. 331: 1116–1121.
Wolf, H., Marschall, F., Scheffold, N., Clausen, M., Schramm, M. and Henze, E. (1993) Iodine-123 labelling of atrial natriuretic peptide and its analogues: initial results. Eur. J. Nucl. Med. 20: 297–301.
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© 1996 Birkhäuser Verlag Basel/Switzerland
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Wolf, H. et al. (1996). Uptake of I-125 radiolabelled dynorphin in glioma cell cultures. In: Krisch, B., Mentlein, R. (eds) The Peptidergic Neuron. Advances in Life Sciences. Birkhäuser Basel. https://doi.org/10.1007/978-3-0348-9010-6_37
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DOI: https://doi.org/10.1007/978-3-0348-9010-6_37
Publisher Name: Birkhäuser Basel
Print ISBN: 978-3-0348-9866-9
Online ISBN: 978-3-0348-9010-6
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