结直肠癌组织脂质组根据对新辅助疗法的反应而有所不同
Salvador Sánchez-Vinces1, Gustavo Henrique Bueno Duarte1, Marcia Cristina Fernandes Messias1
1Health Sciences Postgraduate Program, São Francisco University-USF, Bragança Paulista, São Paulo 12916-900, Brazil.
International journal of molecular sciences
|July 29, 2023
概括
在直肠癌组织中的脂质差异可以预测对新辅助化学放射治疗 (nCRT) 的反应. 非响应者显示某些葡萄糖脂和氧化葡萄糖脂的水平较高,这表明治疗失败的潜在生物标志物.
科学领域:
- 在瘤学瘤学.
- 生物化学 生化学
- 代谢学 代谢学 代谢学
背景情况:
- 直肠癌 (RC) 是一种胃肠道恶性瘤,预后不佳.
- 代谢重编程与RC发展有关,但治疗反应的特定脂质生物标志物仍未定义.
- 了解RC中的脂质概况对于预测治疗结果至关重要.
研究的目的:
- 调查与新辅助化疗放射治疗 (nCRT) 反应相关的直肠癌组织中的相对脂质丰度.
- 识别特定的脂质,使得对nCRT的响应者与不响应者有区别.
- 探索脂管学在局部晚期直肠癌 (LARC) 中预测nCRT衰竭的潜力.
主要方法:
- 使用非向的液体染色体质谱学 (LC-MS) 脂管学.
- 从LARC患者 (n=13) 收集了nCRT前后的组织样本.
- 使用LIMA方法的统计分析在响应者和非响应者之间确定了差异丰富的脂质.
主要成果:
- 非响应者在nCRT前后表现出较高的简单糖脂和某些糖脂残留物.
- 氧化甘氨酸脂在非响应样本中明显多,特别是在nCRT后.
- 这些脂质变化表明在nCRT耐药性中发挥了作用.
结论:
- 特定的脂质特征,包括葡萄糖脂和氧化葡萄糖脂,与直肠癌中对nCRT无反应有关.
- 这些发现可能为nCRT失败提供基于脂质的解释,并增强对RC分子机制的理解.
- 鉴定的脂质可以作为预测直肠癌患者治疗反应的潜在生物标志物.
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