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G3BP1/2-向PROTAC 干扰压力颗粒 作为癌症治疗的ATF4迁移细胞
Ting Dong1,2, Fabao Zhao3, Mengmeng Wang2
1State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, 2A Nanwei Road, Xicheng District, Beijing 100050, China.
Journal of the American Chemical Society
|December 23, 2024
概括
针对压力颗粒 (SGs) 的新化合物通过阻止ATF4生存因子从纤维细胞转移到瘤细胞来抑制癌症生长. 这一发现为癌症治疗提供了新的治疗策略.
科学领域:
- 细胞生物学
- 分子瘤学
- 生物化学
背景情况:
- 压力颗粒 (SG) 是在细胞压力下形成的动态细胞质结构.
- 激活转录因子4 (ATF4) 最好在SG中转化以促进细胞存活.
- 在瘤微环境中SG和ATF4在癌症进展中的作用尚未完全理解.
研究的目的:
- 研究压力颗粒在癌细胞增殖中的作用.
- 开发针对SG动态的小分子用于癌症治疗.
- 在纤维细胞介导的瘤生长中通过SG阐明ATF4传递的机制.
主要方法:
- 针对G3BP1/2的小分子 (#129和PT-129) 的设计和合成.
- 抑制压力颗粒的形成和已经存在的SG的分解.
- 在体外和体内测试以评估PT-129对癌细胞生长和瘤进展的影响.
- 通过迁移细胞的ATF4传递机制的研究.
主要成果:
- 化合物#129和PT-129有效地抑制SG的形成,并拆解现有的SG.
- 在体外,PT-129抑制了纤维细胞介导的癌细胞生长.
- 在体内,PT-129治疗减少了瘤的生长.
- 压力颗粒促进ATF4从纤维细胞到瘤细胞的传递,而PT-129则会破坏这种传递.
结论:
- 压力颗粒通过调解ATF4传递,在促进癌细胞增殖方面发挥着至关重要的作用.
- 用PT-129等化合物向G3BP1/2和调节SG动力学是一种有希望的癌症治疗策略.
- 这些发现为SG功能及其在瘤学中的治疗潜力提供了新的分子见解.
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