RACGAP1和AR之间的相互调节有助于前列腺癌的内分泌治疗耐药性
Jiajia Wang1, Hui Liu2, Zeyuan Yu1
1The Key Laboratory of Experimental Teratology, Department of Pathology, School of Basic Medical Sciences, Ministry of Education, Shandong University, Jinan, 250012, Shandong, China.
Cell communication and signaling : CCS
|June 19, 2024
概括
在前列腺癌中,RACGAP1通过稳定雄激素受体 (AR) 和AR-V7.7来促进内分泌抵抗. 抑制RACGAP1与酶胺一起显示出治疗晚期前列腺癌的前景.
科学领域:
- 在瘤学瘤学.
- 分子生物学分子生物学
- 遗传学 是一个遗传学.
背景情况:
- 晚期前列腺癌 (PCa) 由于内分泌抵抗,往往是致命的.
- 持续激活雄激素受体 (AR) 信号通路驱动这种抵抗.
- 一个原型瘤基因RACGAP1在各种瘤中过度表达.
研究的目的:
- 调查RACGAP1在AR途径激活和PCa内分泌抵抗中的作用.
- 探索针对RACGAP1在高级PCa.的治疗潜力.
主要方法:
- 对RACGAP1和AR表达的生物信息分析.
- 对于AR/AR-V7和RACGAP1.1,qRT-PCR和西部抹杀进行了研究.
- 针对RACGAP1-AR相互作用的免疫沉和免疫光.
- 在PCa细胞中获得和丧失功能的研究.
- 在体内异种移植模型评估RACGAP1抑制.
主要成果:
- 转录性AR激活RACGAP1,在抵抗割的PCa (CRPC) 和抗酶胺的瘤中上调调节.
- 核RACGAP1通过阻止MDM2相互作用来抑制AR/AR-V7降解,从而创建一个反循环.
- 这种RACGAP1-AR/AR-V7循环有助于内分泌治疗耐药性.
- 结合恩扎胺和RACGAP1抑制,显著降低了异种植的瘤生长.
结论:
- RACGAP1和AR/AR-V7之间的相互调节驱动PCa中的内分泌抵抗.
- 针对RACGAP1与酶胺结合,代表了高级PCa的潜在治疗策略.
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