Expression of pituitary adenylate cyclase activating polypeptide (PACAP) receptors in human glial cell tumors. 1994

P Robberecht, and M C Woussen-Colle, and P Vertongen, and P De Neef, and X Hou, and I Salmon, and J Brotchi
Department of Biochemistry and Nutrition, Faculty of Medicine, Université Libre de Bruxelles, Belgium.

Twenty-three human gliomas were analyzed: 13 astroglial neoplasms including three grade II, four grade III, and six grade IV tumors; seven ependymomas; and three oligodendrogliomas. A crude membrane fraction was prepared within 30 min after surgical removal of the tumors and was immediately tested for the presence of pituitary adenylate cyclase activating polypeptide (PACAP) receptors. PACAP stimulated adenylate cyclase activity in 23 tumors, but a specific binding of [125I-acetyl-His1]PACAP-27 was detected in only 16 tumors. In all cases, PACAP-27 and -38 were equipotent (Kd or Kact of 1-3 nM) and were 100- to 1000-fold more potent than VIP. PACAP stimulated threefold the adenylate cyclase activity in the presence of GTP. The results were compatible with an interaction of PACAP with a highly selective type I PACAP receptor and not with a high-affinity VIP/PACAP type II receptor. The presence of PACAP receptors on glial neoplasic opens the possibility of a control of the tumor growth by this family of peptides.

UI MeSH Term Description Entries
D009837 Oligodendroglioma A relatively slow-growing glioma that is derived from oligodendrocytes and tends to occur in the cerebral hemispheres, thalamus, or lateral ventricle. They may present at any age, but are most frequent in the third to fifth decades, with an earlier incidence peak in the first decade. Histologically, these tumors are encapsulated, relatively avascular, and tend to form cysts and microcalcifications. Neoplastic cells tend to have small round nuclei surrounded by unstained nuclei. The tumors may vary from well-differentiated to highly anaplastic forms. (From DeVita et al., Cancer: Principles and Practice of Oncology, 5th ed, p2052; Adams et al., Principles of Neurology, 6th ed, p655) Oligodendroblastoma,Anaplastic Oligodendroglioma,Mixed Oligodendroglioma-Astrocytoma,Mixed Oligodendroglioma-Ependymoma,Oligodendroglioma, Adult,Oligodendroglioma, Childhood,Oligodendroglioma, Well-Differentiated,Well-Differentiated Oligodendroglioma,Adult Oligodendroglioma,Adult Oligodendrogliomas,Anaplastic Oligodendrogliomas,Childhood Oligodendroglioma,Childhood Oligodendrogliomas,Mixed Oligodendroglioma Astrocytoma,Mixed Oligodendroglioma Ependymoma,Mixed Oligodendroglioma-Astrocytomas,Mixed Oligodendroglioma-Ependymomas,Oligodendroblastomas,Oligodendroglioma, Anaplastic,Oligodendroglioma, Well Differentiated,Oligodendroglioma-Astrocytoma, Mixed,Oligodendroglioma-Astrocytomas, Mixed,Oligodendroglioma-Ependymoma, Mixed,Oligodendroglioma-Ependymomas, Mixed,Oligodendrogliomas,Oligodendrogliomas, Adult,Oligodendrogliomas, Anaplastic,Oligodendrogliomas, Childhood,Oligodendrogliomas, Well-Differentiated,Well Differentiated Oligodendroglioma,Well-Differentiated Oligodendrogliomas
D011979 Receptors, Pituitary Hormone Cell surface proteins that bind pituitary hormones with high affinity and trigger intracellular changes influencing the behavior of cells. Since many pituitary hormones are also released by neurons as neurotransmitters, these receptors are also found in the nervous system. Pituitary Hormone Receptors,Receptors, Pituitary Hormones,Pituitary Hormones Receptors
D004789 Enzyme Activation Conversion of an inactive form of an enzyme to one possessing metabolic activity. It includes 1, activation by ions (activators); 2, activation by cofactors (coenzymes); and 3, conversion of an enzyme precursor (proenzyme or zymogen) to an active enzyme. Activation, Enzyme,Activations, Enzyme,Enzyme Activations
D004806 Ependymoma Glioma derived from EPENDYMOGLIAL CELLS that tend to present as malignant intracranial tumors in children and as benign intraspinal neoplasms in adults. It may arise from any level of the ventricular system or central canal of the spinal cord. Intracranial ependymomas most frequently originate in the FOURTH VENTRICLE and histologically are densely cellular tumors which may contain ependymal tubules and perivascular pseudorosettes. Spinal ependymomas are usually benign papillary or myxopapillary tumors. (From DeVita et al., Principles and Practice of Oncology, 5th ed, p2018; Escourolle et al., Manual of Basic Neuropathology, 2nd ed, pp28-9) Ependymoma, Myxopapillary,Ependymoma, Papillary,Anaplastic Ependymoma,Cellular Ependymoma,Clear Cell Ependymoma,Papillary Ependymoma,Anaplastic Ependymomas,Ependymoma, Anaplastic,Ependymomas,Ependymomas, Anaplastic,Ependymomas, Myxopapillary,Ependymomas, Papillary,Myxopapillary Ependymoma,Myxopapillary Ependymomas,Papillary Ependymomas
D005910 Glioma Benign and malignant central nervous system neoplasms derived from glial cells (i.e., astrocytes, oligodendrocytes, and ependymocytes). Astrocytes may give rise to astrocytomas (ASTROCYTOMA) or glioblastoma multiforme (see GLIOBLASTOMA). Oligodendrocytes give rise to oligodendrogliomas (OLIGODENDROGLIOMA) and ependymocytes may undergo transformation to become EPENDYMOMA; CHOROID PLEXUS NEOPLASMS; or colloid cysts of the third ventricle. (From Escourolle et al., Manual of Basic Neuropathology, 2nd ed, p21) Glial Cell Tumors,Malignant Glioma,Mixed Glioma,Glial Cell Tumor,Glioma, Malignant,Glioma, Mixed,Gliomas,Gliomas, Malignant,Gliomas, Mixed,Malignant Gliomas,Mixed Gliomas,Tumor, Glial Cell,Tumors, Glial Cell
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000262 Adenylyl Cyclases Enzymes of the lyase class that catalyze the formation of CYCLIC AMP and pyrophosphate from ATP. Adenyl Cyclase,Adenylate Cyclase,3',5'-cyclic AMP Synthetase,Adenylyl Cyclase,3',5' cyclic AMP Synthetase,AMP Synthetase, 3',5'-cyclic,Cyclase, Adenyl,Cyclase, Adenylate,Cyclase, Adenylyl,Cyclases, Adenylyl,Synthetase, 3',5'-cyclic AMP
D001254 Astrocytoma Neoplasms of the brain and spinal cord derived from glial cells which vary from histologically benign forms to highly anaplastic and malignant tumors. Fibrillary astrocytomas are the most common type and may be classified in order of increasing malignancy (grades I through IV). In the first two decades of life, astrocytomas tend to originate in the cerebellar hemispheres; in adults, they most frequently arise in the cerebrum and frequently undergo malignant transformation. (From Devita et al., Cancer: Principles and Practice of Oncology, 5th ed, pp2013-7; Holland et al., Cancer Medicine, 3d ed, p1082) Astrocytoma, Subependymal Giant Cell,Glioma, Astrocytic,Oligoastrocytoma, Mixed,Pleomorphic Xanthoastrocytomas,Anaplastic Astrocytoma,Astrocytoma, Grade I,Astrocytoma, Grade II,Astrocytoma, Grade III,Astrocytoma, Protoplasmic,Astroglioma,Cerebral Astrocytoma,Childhood Cerebral Astrocytoma,Fibrillary Astrocytoma,Gemistocytic Astrocytoma,Intracranial Astrocytoma,Juvenile Pilocytic Astrocytoma,Pilocytic Astrocytoma,Subependymal Giant Cell Astrocytoma,Anaplastic Astrocytomas,Astrocytic Glioma,Astrocytic Gliomas,Astrocytoma, Anaplastic,Astrocytoma, Cerebral,Astrocytoma, Childhood Cerebral,Astrocytoma, Fibrillary,Astrocytoma, Gemistocytic,Astrocytoma, Intracranial,Astrocytoma, Juvenile Pilocytic,Astrocytoma, Pilocytic,Astrocytomas,Astrocytomas, Grade III,Astrogliomas,Cerebral Astrocytoma, Childhood,Cerebral Astrocytomas,Childhood Cerebral Astrocytomas,Fibrillary Astrocytomas,Gemistocytic Astrocytomas,Gliomas, Astrocytic,Grade I Astrocytoma,Grade I Astrocytomas,Grade II Astrocytoma,Grade II Astrocytomas,Grade III Astrocytoma,Grade III Astrocytomas,Intracranial Astrocytomas,Juvenile Pilocytic Astrocytomas,Mixed Oligoastrocytoma,Mixed Oligoastrocytomas,Pilocytic Astrocytoma, Juvenile,Pilocytic Astrocytomas,Pleomorphic Xanthoastrocytoma,Protoplasmic Astrocytoma,Protoplasmic Astrocytomas,Xanthoastrocytoma, Pleomorphic
D051236 Receptors, Pituitary Adenylate Cyclase-Activating Polypeptide A family of G-protein-coupled receptors that share significant homology with GLUCAGON RECEPTORS. They bind PITUITARY ADENYLATE CYCLASE ACTIVATING POLYPEPTIDE with high affinity and trigger intracellular changes that influence the behavior of CELLS. PACAP Receptors,Pituitary Adenylate Cyclase-Activating Peptide Receptors,PACAP Receptor,Pituitary Adenylate Cyclase-Activating Peptide Receptor,Receptor, PACAP,Pituitary Adenylate Cyclase Activating Peptide Receptor,Pituitary Adenylate Cyclase Activating Peptide Receptors,Receptors, PACAP,Receptors, Pituitary Adenylate Cyclase Activating Polypeptide
D051237 Receptors, Pituitary Adenylate Cyclase-Activating Polypeptide, Type I A pituitary adenylate cyclase-activating peptide receptor subtype that is found in the HYPOTHALAMUS; BRAIN STEM; PITUITARY GLAND; ADRENAL GLAND; PANCREAS; and TESTES and has a high affinity only for PACAP. PACAP Receptors, Type I,Pituitary Adenylate Cyclase-Activating Peptide Receptor Type I,PAC1 Receptor,PACAP Type I Receptor,PACAPR-1 Protein,PACAPR 1 Protein,Pituitary Adenylate Cyclase Activating Peptide Receptor Type I

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