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TERT促进子突变通过改变TERTmRNA在乳腺甲状腺癌中的剪接来增加瘤的侵略性
Ayaka Sako1,2, Michiko Matsuse1, Vladimir Saenko3
1Department of Radiation Medical Sciences, Nagasaki University, Nagasaki 852-8523, Japan.
The Journal of clinical endocrinology and metabolism
|April 5, 2024
概括
端粒酶逆转录酶促进体 (TERT-p) 突变会影响TERT拼接变体,影响乳头甲状腺癌 (PTC) 的攻击性. 像β删除 (dB) 这样的特定变体可能会抵消促进瘤的效应,这表明它在PTC进展中起着复杂的作用.
科学领域:
- 在瘤学瘤学.
- 分子生物学分子生物学
- 遗传学 是一个遗传学.
背景情况:
- 端粒酶逆转录酶促进体 (TERT-p) 突变与侵袭性乳头甲状腺癌 (PTCs) 和不良预后有关.
- 在没有TERT-p突变的PTC中TERT表达与不太具有攻击性的疾病有关.
研究的目的:
- 研究TERT-p突变状态,TERT拼接模式和PTC中的临床病理特征之间的关系.
- 了解不同TERT拼接变体在PTC攻击性中的作用.
主要方法:
- 在207个PTC病例中检查了两个主要TERT拼接变体 (α删除 (dA) 和β删除 (dB)) 的表达.
- 将病例分为TERT-p突变阴性/表达阴性,TERT-p突变阴性/表达阳性和TERT-p突变阳性组.
- 进行了功能性体外研究,以评估拼接变体对细胞行为的影响.
主要成果:
- 在33例病例中发现了TERT-p突变;24例突变阴性病例显示了TERT表达.
- 在TERT-p突变瘤中,+A+B/dB变异的比率更高.
- +A+B表达与较高的PTC攻击性相关,而dB表达显示出瘤抑制作用,抑制生长,迁移和克隆性.
结论:
- TERT-p突变影响了不同的TERT拼接变体的表达.
- 这些TERT拼接变体与不同程度的PTC瘤攻击性有关,dB可能作为瘤抑制剂.
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