STAT3 调节MDA-MB-231 乳腺癌细胞中的氧化还原特征
Juliana Alves Rodrigues1, Bruno Ricardo Barreto Pires1, Isis Salviano Soares de Amorim1,2
1Departamento de Biofísica e Biometria, Instituto de Biologia Roberto Alcântara Gomes, Universidade do Estado do Rio de Janeiro, Rio de Janeiro, RJ, 20551-030, Brazil.
Cell biochemistry and biophysics
|July 20, 2024
概括
信号传感器和转录3激活器 (STAT3) 激活影响三阴性乳腺癌 (TNBC) 的氧化还原平衡. 抑制STAT3影响活性氧物种 (ROS) 和关键的氧化还原标记物,表明STAT3.
科学领域:
- 在瘤学瘤学.
- 分子生物学分子生物学
- 生物化学 生化学
背景情况:
- 构成性STAT3激活和不平衡的氧化还原状态与侵袭性瘤生物学有关,包括癌症中的转移和耐药性.
- 三重阴性乳腺癌 (TNBC) 是一种具有不良预后的侵袭性亚型,其中STAT3在氧化还原平衡中的作用尚不清楚.
- 虽然已知通过活性氧物种 (ROS) 激活STAT3,但其对TNBC中氧化还原平衡的影响需要进行研究.
研究的目的:
- 研究STAT3信号在调节三阴性乳腺癌 (TNBC) 细胞内的氧化还原平衡中的作用.
- 确定STAT3抑制对TNBC中关键的氧化还原稳定标记物和相关信号通路的影响.
主要方法:
- 在TNBC细胞中,STAT3被抑制.
- 测量了总ROS,氧化物,氧化 (NO) 和总谷氨 (GSH) 的水平.
- 评估了3-尼托铁素 (3NT),Nrf2和NF-κB/p65的表达.
- 在TNBC患者中,TCGA数据分析将STAT3mRNA和签名与NF-κB/p65和Nrf2签名相关联.
主要成果:
- STAT3抑制影响了ROS水平,氧化物水平没有变化,但NO和3NT表达增加.
- STAT3抑制导致GSH,Nrf2和NF-κB/p65蛋白的水平降低.
- 在TNBC患者数据中观察到STAT3,NF-κB/p65和Nrf2特征之间的相关性.
结论:
- 在三阴性乳腺癌中,STAT3信号在控制氧化还原平衡方面发挥着重要作用.
- STAT3调节与氧化还原相关基因的表达,包括那些参与氧化应激反应和炎症的基因.
- 这些发现突出了STAT3作为TNBC中调节氧化还原状态的潜在治疗点.
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