Recurrent gain-of-function USP8 mutations in Cushing's disease
文献类型：期刊论文
| 作者 | Ma, ZY; Song, ZJ; Chen, JH; Wang, YF; Li, SQ; Zhou, LF; Mao, Y; Li, YM; Hu, RG; Zhang, ZY |
| 刊名 | CELL RESEARCH
 |
| 出版日期 | 2015 |
| 卷号 | 25期号:3页码:306-317 |
| 关键词 | Cushing's disease pituitary adenomas USP8 mutation whole-exome sequencing |
| 通讯作者 | Shi, YY (reprint author), Shanghai Jiao Tong Univ, Inst Social Cognit & Behav Sci, Key Lab Genet Dev & Neuropsychiat Disorders, BioX Inst,Minist Educ, Shanghai 200030, Peoples R China.,huangcx@shsmu.edu.cn ; shiyongyong@gmail.com ; zhaoyaohs@vip.sina.com |
| 英文摘要 | Cushing's disease, also known as adrenocorticotropic hormone (ACTH)-secreting pituitary adenomas (PAs) that cause excess cortisol production, accounts for up to 85% of corticotrophin-dependent Cushing's syndrome cases. However, the genetic alterations in this disease are unclear. Here, we performed whole-exome sequencing of DNA derived from 12 ACTH-secreting PAs and matched blood samples, which revealed three types of somatic mutations in a candidate gene, USP8 (encoding ubiquitin-specific protease 8), exclusively in exon 14 in 8 of 12 ACTH-secreting PAs. We further evaluated somatic USP8 mutations in additional 258 PAs by Sanger sequencing. Targeted sequencing further identified a total of 17 types of USP8 variants in 67 of 108 ACTH-secreting PAs (62.04%). However, none of these mutations was detected in other types of PAs (n = 150). These mutations aggregate within the 14-3-3 binding motif of USP8 and disrupt the interaction between USP8 and 14-3-3 protein, resulting in an elevated capacity to protect EGFR from lysosomal degradation. Accordingly, PAs with mutated USP8 display a higher incidence of EGFR expression, elevated EGFR protein abundance and mRNA expression levels of POMC, which encodes the precursor of ACTH. PAs with mutated USP8 are significantly smaller in size and have higher ACTH production than wildtype PAs. In surgically resected primary USP8-mutated tumor cells, USP8 knockdown or blocking EGFR effectively attenuates ACTH secretion. Taken together, somatic gain-of-function USP8 mutations are common and contribute to ACTH overproduction in Cushing's disease. Inhibition of USP8 or EGFR is promising for treating USP8-mutated corticotrophin adenoma. Our study highlights the potentially functional mutated gene in Cushing's disease and provides insights into the therapeutics of this disease. |
| 学科主题 | Cell Biology |
| 类目[WOS] | Cell Biology |
| 关键词[WOS] | GROWTH-FACTOR RECEPTOR ; SECRETING PITUITARY-ADENOMAS ; GLUCOCORTICOID RESISTANCE ; CORTICOTROPH ADENOMA ; GERMLINE AIP ; EXPRESSION ; UBPY ; GENE ; TRAFFICKING ; P27(KIP1) |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000350568800007 |
| 版本 | 出版稿 |
| 源URL | [http://202.127.25.143/handle/331003/37]  |
| 专题 | 上海生化细胞研究所_上海生科院生化细胞研究所 |
| 推荐引用方式 GB/T 7714 | Ma, ZY,Song, ZJ,Chen, JH,et al. Recurrent gain-of-function USP8 mutations in Cushing's disease[J]. CELL RESEARCH,2015,25(3):306-317. |
| APA | Ma, ZY.,Song, ZJ.,Chen, JH.,Wang, YF.,Li, SQ.,...&Zhao, Y.(2015).Recurrent gain-of-function USP8 mutations in Cushing's disease.CELL RESEARCH,25(3),306-317. |
| MLA | Ma, ZY,et al."Recurrent gain-of-function USP8 mutations in Cushing's disease".CELL RESEARCH 25.3(2015):306-317. |
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