在人类白血病细胞中,JR-AB2-011诱导了独立于mTOR复合体2抑制的快速代谢变化

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Tereza Kořánová¹, Lukáš Dvořáček¹, Dana Grebeňová¹

¹Department of Proteomics, Institute of Hematology and Blood Transfusion, U Nemocnice 1, Prague, 128 20, Czech Republic.

Pharmacological reports : PR

|September 11, 2024

概括

该mTORC2抑制剂JR-AB2-011影响白血病细胞代谢独立于mTORC2,影响呼吸和糖解. 这一发现挑战了其在癌细胞中的作用机制.

科学领域:

细胞代谢的细胞代谢.
在瘤学瘤学.
分子信号传递是分子信号传递.

背景情况:

拉巴胺素 (mTOR) 途径的机械性标调节细胞代谢活动,并且在白血病/淋巴瘤中经常失调.
需要特定的抑制剂来阐明mTOR复合体 (mTORC1和mTORC2) 的不同作用.
据报道,JR-AB2-011是一种mTORC2特异性抑制剂,向mTOR与RICTOR的相互作用.

研究的目的:

研究JR-AB2-011对白血病和淋巴瘤细胞代谢的影响.
为了确定JR-AB2-011是否在这些细胞类型中起到mTORC2抑制作用.

主要方法:

海马平台用于分析细胞代谢.
评估AKT Ser473酸化作为mTORC2活动的指标.
利用共免疫沉来评估mTOR-RICTOR结合,并使用CRISPR/Cas9来产生RICTOR-null细胞.

主要成果:

在白血病/淋巴瘤细胞系中,JR-AB2-011降低了呼吸和增加了糖分解.
与预期相反,JR-AB2-011没有抑制AKT Ser473酸化或破坏mTOR-RICTOR结合.
即使在RICTOR-null细胞中也观察到JR-AB2-011的代谢作用,这表明mTORC2独立的机制.

结论:

JR-AB2-011通过不涉及mTORC2.2.的途径调节白血病/淋巴瘤细胞代谢.
这项研究揭示了JR-AB2-011的新型作用机制,与其被认为的mTORC2抑制有所区别.

关键词:

在AML,AML就是AML.急性骨髓性白血病 (AML) 是一种急性骨髓性白血病.线粒体呼吸线粒体呼吸在OCR中,OCR是OCR.

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