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NGAL调解了无塑性甲状腺癌细胞通过FAS/CD95抑制的生存
Elvira Crescenzi1, Stefano Mellone1, Gianluca Gragnano2
1Istituto di Endocrinologia ed Oncologia Sperimentale, CNR, 80131 Naples, Italy.
Endocrinology
|December 13, 2023
概括
中性粒细胞凝酶相关的卡林 (NGAL) 通过抑制FAS/CD95死亡受体,促进了类甲状腺癌 (ATC) 的存活率. 抑制NGAL可以恢复FAS/CD95,这为ATC提供了一个潜在的治疗策略.
科学领域:
- 在瘤学瘤学.
- 分子生物学分子生物学
- 生物化学 生物化学
背景情况:
- 中性粒细胞凝酶相关的脂卡林 (NGAL) 是一种涉及癌症进展的蛋白质.
- NGAL在厌塑性甲状腺癌 (ATC) 中表达高,有助于瘤细胞的存活.
- 目前正在调查NGAL促进空中交通员生存的确切机制.
研究的目的:
- 研究NGAL在ATC中调节FAS/CD95死亡受体通路中的作用.
- 阐明NGAL在控制ATC细胞存活中的铁结合特性.
- 在ATC的背景下,探索NGAL对p53转录活性的影响.
主要方法:
- 在人类ATC标本和细胞系中分析NGAL和FAS/CD95表达.
- 基因沉默和NGAL在ATC细胞中的过度表达.
- 用激素抗FAS/CD95抗体进行治疗.
- 操纵细胞铁平衡. 细胞铁平衡.
- 使用突变形式评估NGAL的铁结合能力.
- 对p53转录活性的评估.
主要成果:
- 在ATC中,NGAL表达与FAS/CD95表达有负相关性.
- NGAL沉默可以提高FAS/CD95的调节,使细胞对抗FAS/CD95诱导的死亡敏感.
- 过度表达NGAL降低FAS/CD95的调节,从而产生对细胞死亡的抵抗力.
- NGAL对FAS/CD95的抑制作用是依赖于铁的.
- 铁介导的NGAL活性抑制了p53依赖的FAS/CD95表达.
结论:
- 通过涉及p53.3的铁依赖机制,NGAL通过抑制FAS/CD95表达来促进ATC细胞生存.
- 准NGAL以恢复FAS/CD95表达是一种潜在的治疗途径,用于治疗形甲状腺癌.
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