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母细胞瘤中MDM2过度表达与MDM2放大和BRAFV600E表达的关联

Konstantinos I Tosios¹, Eleni-Marina Kalogirou², Ioannis G Koutlas³

¹Department of Oral Pathology & Medicine and Hospital Dentistry, School of Dentistry, National and Kapodistrian University of Athens, 11527 Athens, Greece.

International journal of molecular sciences

|February 24, 2024

概括

骨髓母细胞瘤是一种常见的瘤,经常复发. 准BRAF和MDM2 (人类小鼠双分钟2同类物) 是有前途的,特别是在野生类型的p53. 这项研究研究了乳腺母细胞瘤中的MDM2,发现过度表达与MAPK激活有关.

科学领域:

在瘤学瘤学.
分子生物学分子生物学
病理学病理学病理学

背景情况:

骨髓母细胞瘤是最常见的牙瘤,其特点是局部侵略性行为和高复发率.
向治疗,特别是BRAF抑制,是由于BRAF V600E常见突变而导致的乳母细胞瘤的有希望的替代或补充治疗方法.
同步抑制BRAF和MDM2 (人类小鼠双分钟2同类物) 已在其他瘤中显示出增强的疗效,特别是野生型p53 (WTp53).

研究的目的:

为了研究MDM2蛋白表达和基因放大在乳腺母细胞瘤.
为了将MDM2表达与BRAF V600E和p53状态相关联.
探索双重BRAF/MDM2抑制的潜力,作为阿米洛母细胞瘤的治疗策略.

主要方法:

免疫组织化学被用于评估MDM2过度表达,BRAF V600E和p53表达在44例乳腺母细胞瘤病例中.
光 in situ 杂交 (FISH) 被用于评估MDM2基因多样性.
进行了统计分析,以确定这些标记物之间的关联.

主要成果:

在36.36%的乳腺母细胞瘤病例中观察到MDM2过度表达.
在MDM2过度表达的瘤中,43.75%是BRAF V600E阳性,93.75%是p53阴性 (WTp53).
过度表达MDM2与MDM2基因放大无关,这表明与MAPK激活有联系.

结论:

在乳腺母细胞瘤中MDM2过度表达可能与MAPK激活和WTp53表达有关,而不是基因放大.
MDM2表达可以作为AMELOBLASTOMA中MAPK激活的标志物.
双重BRAF/MDM2抑制可能是一种可行的治疗方法,用于具有特定分子配置的乳腺母细胞瘤 (MDM2-过度表达/BRAFV600E阳性/WTp53).

关键词:

这就是BRAF.这是一种MDM2蛋白质.艾梅洛母细胞瘤 (Ameloblastoma) 是一种光是一种光.在现场混合化.臭氧致癌瘤的发生在 p53 里,p53 是一个 p53 号码.

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