脑膜瘤抑制蛋白质是MLL相关的白血病发生的必不可少的瘤原因子
Akihiko Yokoyama1, Tim C P Somervaille, Kevin S Smith
1Department of Pathology, Stanford University School of Medicine, Stanford, California 94305, USA.
Cell
|October 22, 2005
概括
瘤性混合血统白血病 (MLL) 融合蛋白需要与瘤抑制剂的相互作用来进行白血病发生. 阴膜对于MLL驱动的骨髓体转变和表观遗传改变至关重要,这使其成为潜在的治疗点.
科学领域:
- 分子生物学分子生物学
- 癌症生物学 癌症生物学
- 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:
- 混合血统白血病 (MLL) 蛋白质是一种涉及急性白血病的基因组甲基转移酶.
- 在一个复合体中,MLL的功能包括menin,这是MEN1瘤抑制基因的产物.
- MEN1突变与内分泌瘤有关.
研究的目的:
- 为了研究MLL-men相互作用在MLL介导的白血病发生中的作用.
- 为了确定menin是否对于维护MLL驱动的髓状细胞转化至关重要.
- 探索梅因在MLL相关癌症表观遗传失调中的作用.
主要方法:
- 表明瘤性MLL融合蛋白与肌肉之间存在稳定的关联.
- 评估在白血病发生的启动中对MLL-men相互作用的要求.
- 精髓的急性遗传切除,以观察对MLL转化细胞的影响.
主要成果:
- 瘤性MLL融合蛋白通过保留的动机结合menin,这对白血病发生至关重要.
- 门对于维持MLL相关的髓状细胞转变至关重要,但不是其他癌基因诱导的转变.
- 阴膜切除可以逆转异常的霍克斯基因表达,并废除MLL转化突变的致癌性质.
结论:
- 人类瘤蛋白 (MLL融合蛋白) 对于瘤活性而言,严重依赖于与瘤抑制剂 (meni) 的直接相互作用.
- 梅宁是MLL驱动型白血病分子治疗的验证潜在标.
- 梅宁在改变的表观遗传功能中发挥着中心作用,这是血液生成癌症病原体的基础.
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