确定ALK是主要的家族神经母细胞瘤倾向基因
Yaël P Mossé1, Marci Laudenslager, Luca Longo
1Division of Oncology and Center for Childhood Cancer Research, Children's Hospital of Philadelphia, Department of Pediatrics, University of Pennsylvania School of Medicine, Philadelphia, Pennsylvania 19104, USA.
形淋巴瘤激酶 (ALK) 基因的生殖基因突变是遗传性神经母细胞瘤的主要原因. 激活ALK突变,无论是遗传的还是获得的,对于这种儿童癌症来说都是潜在的治疗标.
科学领域:
- 在瘤学瘤学.
- 遗传学 是一个遗传学.
- 分子生物学分子生物学
背景情况:
- 神经母细胞瘤是一种流行的儿童癌症,表现出家族遗传模式,但其遗传基础在很大程度上仍然难以捉摸.
- 确定遗传性神经母细胞瘤的遗传基础对于理解疾病病因和开发向治疗至关重要.
研究的目的:
- 阐明导致遗传性神经母细胞瘤的遗传因素.
- 研究形淋巴瘤激酶 (ALK) 基因在神经母细胞瘤的家族和零星形式中的作用.
- 评估针对神经母细胞瘤中ALK的治疗潜力.
主要方法:
- 在神经母细胞瘤谱系上进行了全基因组扫描,以确定链接信号.
- 在链接的染色体区域 (2p23-24) 内的候选基因被重新排序.
- 在高风险神经母细胞瘤样本队列中分析了ALK的体质突变.
- 进行了功能性研究,包括mRNA淘汰和构成性酸化的评估.
主要成果:
- ALK基因的生殖系突变被确定为遗传性神经母细胞瘤的主要原因,在八个家族中发现.
- 在高风险神经母细胞瘤样本中的12.4%中检测到ALK氨酸激酶域中的体内激活突变.
- 突变的ALK蛋白体现了构成性酸化,推动了癌细胞的增殖.
- 针对ALK的制表明,ALK改变的神经母细胞瘤细胞系的显著生长抑制.
结论:
- 在ALK中遗传突变是家族神经母细胞瘤的主要遗传原因.
- 生殖线和体内获得的ALK突变都会导致神经母细胞瘤的发展.
- ALK代表了治疗这种致命的儿科恶性瘤的有希望和可行的治疗标.
更多相关视频
09:34Targeted Next-generation Sequencing and Bioinformatics Pipeline to Evaluate Genetic Determinants of Constitutional Disease
Published on: April 4, 2018
09:33Genetic Profiling and Genome-Scale Dropout Screening to Identify Therapeutic Targets in Mouse Models of Malignant Peripheral Nerve Sheath Tumor
Published on: August 25, 2023
相关概念视频
Enzyme-linked Receptors
Neurotrophin (NT) receptors are a family of RTKs, including trkA, trkB, and trkC (tropomyosin-related kinase) receptors. TrkA is specific for nerve growth factor (NGF), neurotrophin-6, and neurotrophin-7. TrkB binds...
Notch Signaling Pathway
The Notch gene came into the limelight in 1914 after the discovery that its mutation in Drosophila melanogaster leads to a serrated (or "notched") wing margin phenotype. It was not until 1985...
The Retinoblastoma Gene
The first-ever tumor suppressor gene called Rb was identified in retinoblastoma - a rare eye tumor in children. In inherited forms of the disease, a child inherits one defective copy of the Rb gene, which predisposes them to retinoblastoma. However,...
The Retinoblastoma Gene
The first-ever tumor suppressor gene called Rb was identified in retinoblastoma - a rare eye tumor in children. In inherited forms of the disease, a child inherits one defective copy of the Rb gene, which predisposes them to retinoblastoma. However,...
