DNA损伤诱导的铁亡:布尔模型调节药物耐药性中的p53和非编码RNA
Shantanu Gupta1, Daner A Silveira2, José Carlos M Mombach3
1Instituto de Matemática e Estatística, Departamento de Ciência da Computação, Universidade de São Paulo, Rua do Matão 1010, São Paulo 05508-090, SP, Brazil.
Proteomes
|January 23, 2025
概括
瘤抑制剂p53调节细胞死亡途径,如铁亡和亡. 这项研究模拟了p53蛋白质和非编码RNA如何影响这些过程,为癌症抗药性提供了新的治疗策略.
科学领域:
- 细胞生物学 细胞生物学
- 癌症研究 癌症研究
- 系统生物学 系统生物学
背景情况:
- 野生类型的p53对细胞平衡和DNA损伤反应 (DDR) 至关重要,调节衰老,亡和自.
- 新出现的证据表明p53在铁亡中的作用,这是一种依赖铁的细胞死亡途径.
- 翻译后的修改会产生p53蛋白质形式,扩大其调节功能.
研究的目的:
- 阐明p53蛋白形和非编码RNAs (ncRNAs) 对DDR中的ferroptosis,apoptosis和衰老的影响.
- 开发了第一个动态布尔模型,将这些分子参与癌细胞死亡的因素整合起来.
- 确定克服药物耐药性的潜在治疗点.
主要方法:
- 开发一个动态布尔模型来模拟分子相互作用.
- 在p53蛋白形,ncRNAs (CricNOTCH1,MALAT1),miR-34c-5p,Myc和xCT的分析中.
- 使用增益和丧失功能的扰动进行验证,并与实验数据进行比较.
主要成果:
- 该模型准确地反映了口腔状细胞癌,鼻癌和骨髓癌的实验观察结果.
- 确定了关键的积极反循环:CricNOTCH1/miR-34c/Myc,MALAT1/miR-34c/Myc,以及Myc/xCT.
- 证明了囊/谷氨酸转运体 (xCT) 在铁亡调节中的关键作用.
结论:
- p53蛋白形和特定的ncRNA显著调节铁亡,亡和衰老.
- 开发的模型为DDR和细胞死亡途径提供了系统层面的理解.
- 向p53蛋白质和ncRNAs是一个有前途的策略,可以对抗癌症药物耐药性和诱导细胞死亡.
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