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甲状腺癌中的复原元素:表观遗传可塑性,脱差和治疗机会
Nathália Da Roz D'Alessandre1, Bruna Sousa Pessoa2, Gabriela Der Agopian Guardia1
1Centro de Oncologia Molecular, Hospital Sírio-Libanês, São Paulo, 01308-060, SP, Brazil.
Reviews in endocrine & metabolic disorders
|November 26, 2025
概括
甲状腺瘤通过遗传变化和重新激活的移动遗传元素,如逆元件,进化. 抑制这些元素为侵袭性甲状腺癌提供了潜在的新疗法策略.
科学领域:
- 在瘤学瘤学.
- 遗传学 遗传学 是一个
- 表观遗传学 在表观遗传学中,表观遗传学是指表观遗传学.
背景情况:
- 甲状腺瘤表现出显著的表型可塑性,从差异化的亚型发展为攻击性的亚型.
- 经典遗传驱动因素 (BRAF,TP53,RAS) 解释了一些瘤性转变,但并不能解释转录性放松调节和晚期疾病中治疗耐药性的全部程度.
- 移动遗传元素 (MGE),包括LINE-1逆转移体和人体内源逆转录病毒,占基因组的近一半,通常被沉默.
研究的目的:
- 探索MGEs在甲状腺瘤进化和治疗耐药性的作用.
- 为了将遗传变化与MGE活性化和表型脱差联系起来.
- 确定MGEs作为潜在的生物标志物和甲状腺癌的治疗点.
主要方法:
- 综合癌症表观遗传学和移动细胞生物学现有文献的综述.
- 分析基因变异 (TERT促进子突变,TP53功能障碍) 与MGE重新激活之间的功能联系.
- 检查有关逆转录酶抑制剂对反元素活性影响的新兴数据.
主要成果:
- 由表观遗传侵蚀和遗传变化驱动的异常MGE重新激活,有助于非正规的转录,调节性重新连接和插入性突变发生.
- TP53功能障碍和TERT促进子突变与LINE-1和内源性逆转录病毒元素脱抑有关.
- 反转录酶抑制剂在抑制MGE活性,诱导转录重编程和恢复耐火性甲状腺瘤中放射性吸收方面具有潜力.
结论:
- 甲状腺瘤的进化受遗传变化和基因组调节中介的反元素干扰的影响.
- MGEs代表了侵袭性甲状腺瘤转变的潜在生物标志物.
- 针对MGEs在甲状腺癌的转化瘤学中提供了一个新的治疗漏洞.
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