NF-κB通路的表达和激活与急性淋巴细胞白血病中甲酸耐药性和细胞增殖相关
Rafael Renatino Canevarolo1, Nathalia Moreno Cury1, José Andrés Yunes1,2
1Centro de Pesquisa Boldrini, Centro Infantil Boldrini, Campinas 13083-210, SP, Brazil.
Genes
|October 28, 2023
概括
研究人员探索了NF-κB途径与儿童急性淋巴细胞白血病 (ALL) 中的甲状腺素抗性之间的联系. 他们发现,通过NF-κB传递TNF-α信号通路对于MTX耐药性至关重要,尽管抑制它并不能完全解决耐药性.
科学领域:
- 儿科瘤学 儿科瘤学
- 分子生物学分子生物学
- 癌症基因组学 癌症基因组学
背景情况:
- 急性淋巴细胞白血病 (ALL) 是一种常见的儿童癌症,预后有所改善,但不完全.
- 治疗性耐药性,特别是对甲状腺素 (MTX) 的耐药性,导致大量ALL患者的疾病复发.
- 核因子kappa B (NF-κB) 途径在ALL中经常过度激活,并与细胞存活和增殖有关.
研究的目的:
- 研究NF-κB途径在儿科ALL中MTX耐药性的作用.
- 确定与ALL患者的MTX反应差相关的特定信号通路.
- 阐明NF-κB活性和MTX抵抗机制之间的复杂相互作用.
主要方法:
- 来自161名儿科ALL患者的公开可用的基因表达数据的基因组丰富分析.
- 对抗MTX和敏感ALL细胞系 (B细胞和T细胞ALL) 的转录组分析.
- 路西法酶记者测试测量基因改造ALL细胞系中的NF-κB活性.
主要成果:
- 通过NF-κB传递瘤坏死因子α (TNF-α) 信号通路是MTX低响应患者和MTX耐药细胞系中最丰富的癌症标志.
- 由TNF-α触发的NF-κB活性,但不是MTX,与MTX抵抗和扩散相关.
- NFKB1基因表达与对MTX的临床反应较差以及细胞系中MTX抗性增加有关.
结论:
- TNF-α/NF-κB通路在MTX耐药ALL中显著丰富,并且与较差的临床结果相关.
- 虽然NF-κB激活与MTX耐药性相关,但这种途径的直接药理调节在体外没有显著改变MTX耐药性.
- 在ALL中,MTX与NF-κB通路之间存在复杂的相互作用,需要进一步研究治疗策略.
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