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针对ATR激酶作为治疗犬类淋巴瘤和白血病的策略

Marta Henklewska¹, Aleksandra Pawlak¹, Bożena Obmińska-Mrukowicz¹

¹Department of Pharmacology and Toxicology, Wrocław University of Environmental and Life Sciences, Wrocław, Poland.

Veterinary and comparative oncology

|September 20, 2024

概括

与Rad3相关的 (ATR) 激酶抑制剂贝佐瑟蒂布在治疗犬类淋巴瘤和白血病方面表现有前途. 这种ATR抑制剂有效地向癌细胞,同时保护正常细胞,表明潜在的新治疗途径.

科学领域:

在瘤学瘤学.
分子生物学分子生物学
兽医医学兽医医学兽医医学

背景情况:

ATAXIA telangiectasia和Rad3相关的 (ATR) 激酶对于细胞对DNA损伤和复制压力的反应至关重要.
在癌症临床前研究中,ATR抑制剂已经证明有效,并且正在为人类瘤学进行临床开发.
像淋巴瘤和白血病这样的犬类造血性癌症,代表了治疗创新的重要领域.

研究的目的:

为了评估ATR抑制剂贝尔佐瑟蒂布在体外抗癌效果,对抗犬类造血癌细胞系.
为了比较贝尔佐瑟蒂布在癌细胞中的细胞毒性与非癌细胞中的犬细胞.
调查贝尔佐瑟蒂布与ambucil的潜在协同效应及其对DNA损伤和亡的影响.

主要方法:

用MTT测定和四个犬类淋巴瘤和白血病细胞系的流动细胞计量来评估细胞毒性.
通过流细胞计量量化了亡水平,并通过测量H2AX酸化来评估DNA损伤,使用Western blot.
使用流细胞计分析了与ambucil 的协同效应以及对细胞循环干扰的影响.

主要成果:

伯佐瑟蒂布在对正常犬细胞无毒的度下对犬类淋巴瘤和白血病细胞表现出显著的抗癌活性,尽管细胞系之间的敏感性有所不同.
细胞死亡是通过因DNA损伤引起的卡斯巴酶依赖性亡进行的.
贝尔佐瑟蒂布与ambucil 显示出协同作用,可能通过通过 S 阶段停止的废除来抑制DNA损伤的修复.

结论:

柏佐瑟蒂布的ATR抑制为犬类淋巴瘤和白血病提供了潜在的新疗法策略.
该药物有效地诱导癌细胞的亡和DNA损伤,观察到不同的敏感性.
需要进一步的研究来确定预测犬类癌症ATR抑制敏感性的生物标志物.

关键词:

阻碍ATR的方法造成的DNA损伤是DNA损伤.贝尔佐索塞尔蒂布 (berzosertib) 是一个名为贝尔佐索的植物.癌症治疗疗法癌症治疗狗的癌症狗的癌症

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