Production of the a Subunit of Guanine Nucleotide-Binding Protein GO by Neuroendocrine Tumors1
[CANCER RESEARCH 47, 5800-5805, November 1, 1987] Production of the a Subunit of Guanine Nucleotide-binding Protein GO by Neuroendocrine Tumors1 Kanefusa Kato,2 Tomiko Asano, Nobuko Kamiya, Hajime Haimoto, Syun Hosoda, Akio Nagasaka, Yutaka Ariyoshi, and Yukio Ishiguro Department of Biochemistry ¡K.K„T.A., N. K.], Institute for Developmental Research, Aichi Prefectural Colony, Kasugai, Aichi 480-03; Laboratory of Pathology ¡H.H., S. H.] and Department of Internal Medicine [Y, A.], Aichi Cancer Center, Chikusa-ku, Nagoya 464; Department of Internal Medicine [A. N.J. Fujita-Gakuen Health University, School of Medicine, Toyoake, Aichi 470-11; and Department of Surgery [Y. IJ, Nagoya University School of Medicine, Showa-ku, Nagoya 466, Japan ABSTRACT is localized exclusively in the nervous tissues and some endo crine cells in pancreas, pituitary, thyroid, and adrenal,4 which We have found that neuroendocrine tumors (including neuroblastoma, belong to a family designated as APUD (amine precursor ganglioneuroma, gut carcinoid, pheochromocytoma, medullary thyroid uptake and decarboxylation) or diffuse neuroendocrine system carcinoma, insulinoma, glucagonoma, prolactinoma, carotid body tumor, (10). We describe here the presence of G0«in tumors derived and small cell lung carcinoma) produce considerable amounts (about 1000-80,000 ng/g tissue) of the a subunit of guanine nucleotide-binding from the above mentioned neuroendocrine cells and in sera of protein, G0 (Goa), whereas nonneuroendocrine tumors contain less than patients with neuroblastoma, and evaluate G0a for the appli 300 ng of Goa/g tissue. Goat in the neuroendocrine tumors was present cation to clinical and immunohistochemical diagnosis. both in the soluble fraction, and cholate-extractable membrane-bound fraction of tissues.
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