在清细胞细胞癌中,BBOX1抑制TBK1-mTORC1瘤信号传递

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Chengheng Liao¹, Lianxin Hu^2,3, Liwei Jia²

¹Department of Pathology, University of Texas Southwestern Medical Center, Dallas, TX, USA. Chengheng.Liao@UTSouthwestern.edu.

Nature communications

|February 11, 2025

概括

γ-butyrobetaine氧酶1 (BBOX1) 作为清细胞脏细胞癌 (ccRCC) 的瘤抑制剂. 恢复BBOX1通过通过BBOX1-DCLK2-TBK1轴准代谢途径来抑制ccRCC的生长.

科学领域:

在瘤学瘤学.
分子生物学分子生物学
代谢疾病代谢疾病

背景情况:

清细胞细胞癌 (ccRCC) 是一种代谢性恶性瘤,起源于近端卷状管 (PCT) 表皮细胞.
在ccRCC病原体的启动信号事件尚未完全理解.
γ-butyrobetaine hydroxylase 1 (BBOX1) 是一种关键的酶,主要表达在PCT细胞中.

研究的目的:

在ccRCC中识别新的瘤抑制剂.
阐明BBOX1在ccRCC发育和进展中的作用.
为了研究BBOX1-介导瘤抑制的基础分子机制.

主要方法:

在ccRCC组织中分析BBOX1表达.
功能性研究涉及BBOX1在ccRCC细胞和异种移植中的恢复.
转录学分析以确定受影响的信号通路.
研究了BBOX1,TANK结合激酶1 (TBK1) 和双类激酶2 (DCLK2) 之间的相互作用.

主要成果:

在ccRCC恶性转变过程中,BBOX1的表达失去了.
恢复BBOX1降低了ccRCC细胞的活力,并抑制了瘤的生长.
BBOX1抑制了关键的代谢途径,包括mTORC1信号和糖解.
BBOX1通过破坏DCLK2-TBK1相互作用来抑制ccRCC,从而防止TBK1的激活.

结论:

在ccRCC中,BBOX1作为瘤抑制剂起作用.
BBOX1-DCLK2-TBK1轴是ccRCC代谢失调的一个关键机制.
针对这一轴可能为ccRCC提供潜在的治疗策略.

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