Article
An unliganded thyroid hormone beta receptor activates the cyclin D1/cyclin-dependent kinase/retinoblastoma/E2F pathway and induces pituitary tumorigenesis.
Molecular and cellular biology - 1 Jan 2005
Furumoto Hiroko, Ying Hao, Chandramouli G V R, Zhao Li, Walker Robert L, Meltzer Paul S, Willingham Mark C, Cheng Sheue-Yann
Abstract excerpt
Thyroid-stimulating hormone (TSH)-secreting tumors (TSH-omas) are pituitary tumors that constitutively secrete TSH. The molecular genetics underlying this abnormality are not known. We discovered that a knock-in mouse harboring a mutated thyroid hormone receptor (TR) beta (PV; TRbeta(PV/PV) mouse) spontaneously developed TSH-omas. TRbeta(PV/PV) mice lost the negative feedback regulation with highly elevated TSH...
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