Somatostatin receptor expression on von Hippel-Lindau-associated hemangioblastomas offers novel therapeutic target

Von Hippel-Lindau (VHL)-associated hemangioblastomas (VHL-HB) arise in the central nervous system (CNS), and are a leading cause of morbidity and mortality in VHL disease. Currently, surgical resection is the most effective way to manage symptomatic VHL-HBs. Surgically unresectable VHL-HBs or those...

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Veröffentlicht in:Scientific reports 2017-01, Vol.7 (1), p.40822-40822, Article 40822
Hauptverfasser: Sizdahkhani, Saman, Feldman, Michael J., Piazza, Martin G., Ksendzovsky, Alexander, Edwards, Nancy A., Ray-Chaudhury, Abhik, Maric, Dragan, Merrill, Marsha J., Pacak, Karel, Zhuang, Zhengping, Chittiboina, Prashant
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container_issue 1
container_start_page 40822
container_title Scientific reports
container_volume 7
creator Sizdahkhani, Saman
Feldman, Michael J.
Piazza, Martin G.
Ksendzovsky, Alexander
Edwards, Nancy A.
Ray-Chaudhury, Abhik
Maric, Dragan
Merrill, Marsha J.
Pacak, Karel
Zhuang, Zhengping
Chittiboina, Prashant
description Von Hippel-Lindau (VHL)-associated hemangioblastomas (VHL-HB) arise in the central nervous system (CNS), and are a leading cause of morbidity and mortality in VHL disease. Currently, surgical resection is the most effective way to manage symptomatic VHL-HBs. Surgically unresectable VHL-HBs or those in frail patients are challenging problems. Therapies targeting oncologic and vascular endothelial growth factor (VEGF) pathways have failed to demonstrate tumor control. Our experience and previous reports on VHL-HB avidity to somatostatin analogues suggested somatostatin receptor (SSTR) expression in VHL-HBs, offering an alternative therapeutic strategy. We explored this possibility by demonstrating consistent histologic expression of SSTR1, 2a, 4, and 5 in VHL-HBs. We found that somatostatin analogue octreotide induces apoptosis in VHL-HB stromal cells in a dose-dependent fashion by BAX – caspase-3 pathway unrelated to canonical VHL pathway. When administered to a patient with unresectable symptomatic suprasellar hemangioblastoma, octreotide resulted in tumor volume reduction, symptom stabilization, and tumor cytopenia on repeat 68 Ga-DOTA-TATE positron emission tomography (PET) within 6 months, suggesting tumor infarction. We conclude that VHL-HBs harbor multiple SSTR subtypes that offer actionable chemo-therapeutic strategy for management of symptomatic, unresectable tumors by somatostatin analogue therapy.
doi_str_mv 10.1038/srep40822
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When administered to a patient with unresectable symptomatic suprasellar hemangioblastoma, octreotide resulted in tumor volume reduction, symptom stabilization, and tumor cytopenia on repeat 68 Ga-DOTA-TATE positron emission tomography (PET) within 6 months, suggesting tumor infarction. 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When administered to a patient with unresectable symptomatic suprasellar hemangioblastoma, octreotide resulted in tumor volume reduction, symptom stabilization, and tumor cytopenia on repeat 68 Ga-DOTA-TATE positron emission tomography (PET) within 6 months, suggesting tumor infarction. We conclude that VHL-HBs harbor multiple SSTR subtypes that offer actionable chemo-therapeutic strategy for management of symptomatic, unresectable tumors by somatostatin analogue therapy.</abstract><cop>London</cop><pub>Nature Publishing Group UK</pub><pmid>28094316</pmid><doi>10.1038/srep40822</doi><tpages>1</tpages><oa>free_for_read</oa></addata></record>
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source MEDLINE; Nature Free; DOAJ Directory of Open Access Journals; Elektronische Zeitschriftenbibliothek - Frei zugängliche E-Journals; PubMed Central; Alma/SFX Local Collection; Free Full-Text Journals in Chemistry; Springer Nature OA Free Journals
subjects 13
13/1
13/106
13/2
13/31
13/51
14
38
38/77
59
59/78
692/4028/546
692/4028/67/1244
692/699/375/1922
Apoptosis
Apoptosis - drug effects
Avidity
Brain Neoplasms - drug therapy
Brain Neoplasms - pathology
Caspase
Caspase-3
Cells, Cultured
Central nervous system
Female
Hemangioblastoma - drug therapy
Hemangioblastoma - pathology
Humanities and Social Sciences
Humans
Infarction
Middle Aged
Morbidity
multidisciplinary
Neoplasia
Nervous system
Neurological disorders
Octreotide
Octreotide - analogs & derivatives
Octreotide - pharmacology
Octreotide - therapeutic use
Organometallic Compounds - therapeutic use
Patients
Positron emission tomography
Radiopharmaceuticals - therapeutic use
Receptors, Somatostatin - agonists
Receptors, Somatostatin - genetics
Receptors, Somatostatin - metabolism
Science
Science (multidisciplinary)
Somatostatin
Somatostatin receptors
Stromal cells
Tumors
Vascular endothelial growth factor
VHL protein
von Hippel-Lindau Disease - drug therapy
von Hippel-Lindau Disease - pathology
title Somatostatin receptor expression on von Hippel-Lindau-associated hemangioblastomas offers novel therapeutic target
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