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Intracellular Refolding Assay
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热冲击因子1直接调节转硫路径,促进前列腺癌的扩散和存活率
J Spencer Hauck1, David Moon1, Xue Jiang1
1Department of Pathology and Duke Cancer Institute, Duke University School of Medicine, Room 301M, Duke South DUMC 3712, 40 Duke Medicine Circle, Durham, NC, 27710, USA.
Communications biology
|January 3, 2024
概括
热冲击因子1 (HSF1) 针对晚期前列腺癌 (PCa) 中的囊氨酸β合成酶 (CBS). 抑制HSF1和CBS有效地减少PCa生长和瘤细胞死亡,提供了一个新的治疗策略.
科学领域:
- 在瘤学瘤学.
- 分子生物学分子生物学
- 生物化学 生物化学
背景情况:
- 晚期前列腺癌 (PCa) 的治疗选择有限.
- 热冲击因子1 (HSF1) 在PCa上调,是潜在的治疗点.
- HSF1影响PCa进展的精确分子机制尚未完全理解.
研究的目的:
- 阐明HSF1在调节前列腺癌中转硫化途径中的作用.
- 在PCa.中研究HSF1和cystathionine-β-synthase (CBS) 之间的关系.
- 评估针对高级PCa的HSF1和CBS的治疗潜力.
主要方法:
- 在PCa组织中分析HSF1表达.
- 研究HSF1与CBS基因促进体结合的研究.
- 对CBS mRNA和蛋白质水平的测量.
- 关于PCa细胞增殖和细胞亡的体外研究.
- 使用PCa异种移植小鼠模型进行体内研究.
主要成果:
- HSF1直接与CBS基因结合,对CBSmRNA水平进行上调,并促进 homocysteine 转化为cystathionine.
- 仅仅针对CBS显著抑制PCa细胞增殖,并诱导瘤细胞死亡,对良性前列腺细胞的影响最小.
- 联合抑制HSF1和CBS表现出协同效应,导致PCa细胞增殖的更强的抑制和转硫途径代谢物的减少.
- 同时淘汰HSF1和CBS在PCa异种移植小鼠模型中显著减少瘤大小.
结论:
- 通过控制CBS表达,HSF1在调节前列腺癌中转硫路径方面发挥着至关重要的作用.
- HSF1-CBS轴代表了晚期前列腺癌的一个有前途的治疗标.
- 联合抑制HSF1和CBS为治疗晚期PCa提供了强大而有效的策略,需要进一步的临床研究.
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