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  Decoding the genetic basis of Cushing's disease: USP8 in the spotlight

Theodoropoulou, M., Reincke, M., Fassnacht, M., & Komada, M. (2015). Decoding the genetic basis of Cushing's disease: USP8 in the spotlight. EUROPEAN JOURNAL OF ENDOCRINOLOGY, 173(4), M73-M83. doi:10.1530/EJE-15-0320.

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Theodoropoulou, Marily1, Autor           
Reincke, Martin2, Autor
Fassnacht, Martin2, Autor
Komada, Masayuki2, Autor
Affiliations:
1Clinical Research, Max Planck Institute of Psychiatry, Max Planck Society, ou_2035296              
2external, ou_persistent22              

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 Zusammenfassung: Cushing's disease (CD) arises from pituitary-dependent glucocorticoid excess due to an ACTH-secreting corticotroph tumor. Genetic hits in oncogenes and tumor suppressor genes that afflict other pituitary tumor subtypes are not found in corticotrophinomas. Recently, a somatic mutational hotspot was found in up to half of corticotrophinomas in the USP8 gene that encodes a protein that impairs the downregulation of the epidermal growth factor receptor (EGFR) and enables its constitutive signaling. EGF is an important regulator of corticotroph function and its receptor is highly expressed in Cushing's pituitary tumors, where it leads to increased ACTH synthesis in vitro and in vivo. The mutational hotspot found in corticotrophinomas hyper-activates USP8, enabling it to rescue EGFR from lysosomal degradation and ensure its stimulatory signaling. This review presents new developments in the study of the genetics of CD and focuses on the USP8-EGFR system as trigger and target of corticotroph tumorigenesis.

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Sprache(n): eng - English
 Datum: 2015-10
 Publikationsstatus: Erschienen
 Seiten: -
 Ort, Verlag, Ausgabe: -
 Inhaltsverzeichnis: -
 Art der Begutachtung: -
 Identifikatoren: ISI: 000360491900008
DOI: 10.1530/EJE-15-0320
 Art des Abschluß: -

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Titel: EUROPEAN JOURNAL OF ENDOCRINOLOGY
Genre der Quelle: Zeitschrift
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Affiliations:
Ort, Verlag, Ausgabe: Bristol BS32 4JT, UK : bioscientifica Ltd
Seiten: - Band / Heft: 173 (4) Artikelnummer: - Start- / Endseite: M73 - M83 Identifikator: ISSN: 0804-4643