Mutationally Activated BRAFV600E Elicits Papillary Thyroid Cancer in the Adult Mouse

被引:80
作者
Charles, Roch-Philippe [1 ,2 ]
Iezza, Gioia [3 ]
Amendola, Elena [4 ]
Dankort, David [1 ,2 ]
McMahon, Martin [1 ,2 ]
机构
[1] Univ Calif San Francisco, UCSF Helen Diller Family Comprehens Canc Ctr, San Francisco, CA 94158 USA
[2] Univ Calif San Francisco, Dept Cell & Mol Pharmacol, San Francisco, CA 94158 USA
[3] Univ Calif San Francisco, Dept Pathol, San Francisco, CA 94158 USA
[4] Biogem SC Ar l, Ist Ric Genet, Gaetano Salvatore, Ariano Irpino, Italy
关键词
TUMOR INITIATION; EXPRESSION; BRAF; PROGRESSION; MODELS; CELLS; GENE;
D O I
10.1158/0008-5472.CAN-10-4463
中图分类号
R73 [肿瘤学];
学科分类号
100214 ;
摘要
Mutated BRAF is detected in approximately 45% of papillary thyroid carcinomas (PTC). To model PTC, we bred mice with adult-onset, thyrocyte-specific expression of BRAF(V600E). One month following BRAF(V600E) expression, mice displayed increased thyroid size, widespread alterations in thyroid architecture, and dramatic hypothyroidism. Over 1 year, without any deliberate manipulation of tumor suppressor genes, all mice developed PTC displaying nuclear atypia and marker expression characteristic of the human disease. Pharmacologic inhibition of MEK1/2 led to decreased thyroid size, restoration of thyroid form and function, and inhibition of tumorigenesis. Mice with BRAF(V600E)-induced PTC will provide an excellent system to study thyroid tumor initiation and progression and the evaluation of inhibitors of oncogenic BRAF signaling. Cancer Res; 71(11); 3863-71. (C) 2011 AACR.
引用
收藏
页码:3863 / 3871
页数:9
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