腹膜间皮质瘤瘤发生的遗传途径
Ioannis Panagopoulos1, Kristin Andersen2, Marta Brunetti2
1Section for Cancer Cytogenetics, Institute for Cancer Genetics and Informatics, The Norwegian Radium Hospital, Oslo University Hospital, Oslo, Norway; ioannis.panagopoulos@rr-research.no.
Cancer genomics & proteomics
|July 3, 2023
概括
这项研究揭示了两种关键的遗传途径在腹间皮质瘤. 一个涉及染色体的增长,而另一个特点是特定的MAP3K8基因重排,在其他癌症中很常见.
科学领域:
- 在瘤学瘤学.
- 遗传学 遗传学 是一个
- 癌症生物学 癌症生物学
背景情况:
- 中皮质瘤是起源于中皮质细胞的瘤.
- 这些瘤表现出获得的染色体异常,包括CDKN2A删除和NF2多态.
- 涉及EWSR1,FUS和ALK的融合基因在间皮瘤中经常被观察到.
研究的目的:
- 为了研究两个腹膜间皮瘤病例的细胞基因组概况.
- 为了确定特定的遗传变化和病原遗传机制背后的间皮瘤的发展.
主要方法:
- 在这两种瘤上进行了G-绑定与型化和阵列比较基因组杂交 (aCGH).
- 一个瘤使用RNA测序,RT-PCR,桑格测序和FISH进行了进一步分析.
主要成果:
- 第一次间皮瘤显示了5号,7号和20号染色体的增加.
- 第二种间皮瘤表现出10号染色体的逆转 (inv(10) ((p11q25)) 没有通过aCGH检测到拷贝数的变化.
- RNA测序确定了一个由逆转产生的MAP3K8::ABLIM1融合基因,与MAP3K8.8.的第9个外显子的损失.
结论:
- 在腹间皮质瘤中确定了两个不同的病原遗传途径.
- 一个途径涉及5号,7号和20号染色体的超平性与保留的异构,可能与双相性半质瘤有关.
- 第二个途径的特点是MAP3K8的重组,特别是外显子9的损失,这种机制也在其他癌症中见到,如甲状腺癌和肺癌.
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