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GGCT通过通过RPS15A对p53进行上调来抑制PTC细胞中的铁亡

Hui-Min Zhang^1,2, Han-Ning Li³, Enbo Qi⁴

¹School of Basic Medical Sciences, Xinxiang Medical University, Xinxiang, Henan, People's Republic of China.

|March 5, 2025

概括

γ-氨酸循环转移酶 (GGCT) 倒置通过影响谷氨代谢,促进皮肤状甲状腺癌 (PTC) 的铁化. GGCT与RPS15A相互作用,影响瘤生长和转移.

科学领域:

生物化学生物化学
在瘤学瘤学.
分子生物学分子生物学

背景情况:

谷氨 (GSH) 代谢对细胞健康至关重要,其失调与铁亡有关.
乳头甲状腺癌 (PTC) 呈现出异常的GSH代谢,但γ-胺环转移酶 (GGCT) 的作用尚不清楚.
了解GGCT的作用对于开发针对PTC的新型治疗策略至关重要.

研究的目的:

为了研究GGCT在乳头甲状腺癌 (PTC) 进展中的作用.
阐明GGCT影响PTC中的铁和瘤生长的分子机制.
在PTC中确定与GGCT相关的潜在治疗点.

主要方法:

评估了GGCT倒置及其对GSH合成的影响,马隆迪甲 (MDA) 和活性氧物种 (ROS).
在体内瘤形成的测试使用特定的GGCT抑制剂 (Pro-GA) 进行.
使用免疫沉 (IP) 和液体染色学-并联质谱法 (LC-MS/MS) 确定了蛋白质与蛋白质的相互作用.
在GGCT途径中RPS15A,p53,SLC7A11和miR-205-5p的作用通过敲击和过度表达研究进行了调查.

主要成果:

GGCT knockdown抑制了GSH合成并增加了MDA和ROS,促进了PTC细胞中的铁亡.
发现GGCT与RPS15A相互作用,促进其稳定性;RPS15A敲击导致p53上调和SLC7A11下调,诱导铁亡.
miR-205-5p针对GGCT的3' UTR,抑制GGCT介导的铁,瘤生长和肺转移.

结论:

通过通过RPS15A/p53/SLC7A11轴调节铁亡,GGCT在促进PTC进展方面发挥着重要作用.
GGCT增强了RPS15A的稳定性,有助于抑制PTC中的ferroptosis.
miR-205-5p通过抑制GGCT表达作用作为瘤抑制剂,为PTC提供潜在的治疗途径.

关键词:

在GGCT中,GGCT是指GGCT.在RPS15A中使用.铁性化 (ferroptosis) 是一种 miR‐205‐5p 的时间.皮囊甲状腺癌是甲状腺癌.

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