通过ACOX1介导的过氧体脂肪酸氧化有助于代谢重编程和慢性淋巴细胞白血病的存活
Mariana Tannoury1, Marianne Ayoub1, Léa Dehgane1
1Centre de Recherche des Cordeliers, Sorbonne Université, Université Paris Cité, Inserm UMRS 1138, Drug Resistance in Hematological Malignancies Team, F-75006, Paris, France.
Leukemia
|December 6, 2023
概括
用ACOX1抑制剂向过氧体脂肪酸β-氧化 (pFAO) 为慢性淋巴细胞白血病 (CLL) 的新疗法. 这种方法诱导癌细胞死亡,并且在与BTK抑制剂结合时显示出有希望的结果.
科学领域:
- 癌症新陈代谢 癌症新陈代谢
- 生物化学 生物化学
- 血液瘤学 血液瘤学
背景情况:
- 慢性淋巴细胞白血病 (CLL) 仍然无法治愈,治疗耐药性是一个重大的临床挑战.
- 在CLL中的瘤B淋巴细胞表现出明显的代谢特征.
- 了解CLL细胞生理学对于开发新型治疗策略至关重要.
研究的目的:
- 为了研究CLLB淋巴细胞的代谢特征.
- 根据CLL细胞代谢识别潜在的治疗点.
- 探索超氧体脂肪酸β-氧化 (pFAO) 在CLL中的作用.
主要方法:
- 对CLLB淋巴细胞中的代谢重编程的分析.
- 评估线粒体的氧化酸化和糖解速率.
- 研究卡尼的最终产品,以确定代谢途径.
- 功能性研究涉及ACOX1 (乙-CoA氧化酶1) 下调和阻断.
- 评估患者衍生细胞中的ACOX1抑制以及与BTK抑制剂结合使用.
主要成果:
- 克莱尔B型淋巴细胞显示高氧化酸化,低糖解和增加的pFAO.
- 一个关键的pFAO酶ACOX1在CLL细胞中过度表达.
- 抑制ACOX1会改变CLL细胞代谢,诱导脂质滴积累,并触发卡斯巴酶依赖的细胞死亡.
- 抑制ACOX1可以选择性地向CLL细胞,而不会影响正常的血细胞.
- 联合ACOX1和BTK抑制表明对CLL细胞具有协同性细胞毒性.
结论:
- 过氧体脂肪酸β-氧化 (pFAO) 是CLL中必不可少的代谢途径.
- 向ACOX1代表了一个有前途的,基于代谢的治疗策略,用于CLL.
- 抑制ACOX1,特别是与BTK抑制剂结合使用,为治疗CLL提供了一种新的方法,包括耐药病例.
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