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与铁亡相关的基因特征预测前列腺癌的预后和免疫微环境
Hao Wang1, Dalang Fang2,3, Jinxin Zhu4
1Department of Urology, Xuzhou Central Hospital, Xuzhou, China.
Translational andrology and urology
|October 22, 2024
概括
这项研究开发了一个八个基因签名来预测前列腺癌 (PCa) 预后和免疫微环境. 这种与ferroptosis相关的基因特征准确地识别出具有较差结果的高风险患者,提供潜在的治疗点.
科学领域:
- 在瘤学瘤学.
- 分子生物学分子生物学
- 免疫学 免疫学 免疫学
背景情况:
- 铁,一种依赖于铁的编程细胞死亡形式,在癌症中起作用.
- 铁死在前列腺癌 (PCa) 的预后意义尚不清楚.
- 这项研究解决了探索铁死在PCa预后中的作用和确定潜在治疗策略的需要.
研究的目的:
- 开发和验证与铁灭相关的基因特征,用于预测PCa预后.
- 为了研究铁灭签名与瘤免疫微环境之间的关联.
- 根据铁亡途径,确定PCa的潜在治疗点.
主要方法:
- 利用了来自癌症基因组图谱 (TCGA) 和基因表达综合 (GEO) 数据库的RNA测序数据,用于478名PCa患者.
- 开发了一个使用单变量和多变量考克斯回归分析的预后签名.
- 通过Kaplan-Meier分析评估生存率和使用接收器操作特征 (ROC) 分析的预测准确性.
- 使用CIBERSORT和基因组丰富分析 (GSEA) 调查免疫微环境差异.
- 在PCa和良性前列腺激增症 (BPH) 组织中使用qRT-PCR,西部斑块和免疫组织化学 (IHC) 验证核心基因表达.
主要成果:
- 建立并验证了一种新的八基因铁灭相关的预后特征.
- 通过签名识别的高风险组与低风险组相比,其无疾病生存率 (DFS) 显著下降.
- 该签名在TCGA (AUCs 0.85-0.76) 和GEO (AUCs 0.69-0.75) 队列中都显示出强大的预测准确度.
- 在高危人群中观察到免疫相关途径的显著上调,包括细胞因子活性.
- 观察到明显的免疫细胞透模式,在高风险组中具有更高的调节性T细胞 (Tregs) 和较低的杆细胞和血细胞.
- 与BPH组织相比,PCa中DRD4,SRC,AKR1C2和AIFM2的表达显著增加.
结论:
- 一个八个基因的铁灭相关的基因特征准确地预测PCa患者的结果.
- 这种签名可以作为一个有价值的工具,用于PCa的预后评估.
- 与铁生相关的基因与抗瘤免疫有关,并代表PCa.的潜在治疗点.
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