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激活KRAS突变标志着先天性肺气道形中的先发性囊性结构

Cathy van Horik¹, Floor Benthem^1,2, Marjon Buscop-van Kempen^1,2

¹Department of Paediatric Surgery, Erasmus University Medical Centre, Sophia Children's Hospital, Wytemaweg 80, 3015 CN, Rotterdam, The Netherlands.

Respiratory research

|January 16, 2026

概括

在先天性肺气道形 (CPAM) 中的KRAS突变与增加的细胞增殖和与肺癌的转录基因相似性有关. 这表明KRAS突变的CPAM可能表明恶性瘤的风险更高.

科学领域:

肺部医学肺部医学
在瘤学瘤学.
分子生物学分子生物学

背景情况:

先天性肺气道形 (CPAM) 可以经历恶性转变,甚至在无症状病例中促使手术切除.
在一小部分CPAM患者中发现了基斯大鼠肉瘤病毒 (KRAS) 突变,这表明潜在的前恶性状态.
了解 CPAM 中的 KRAS 突变状态对于统一治疗策略和评估恶性瘤风险至关重要.

研究的目的:

研究KRAS突变在CPAM中的作用,作为恶性退行症的风险因素.
为了比较具有和没有KRAS突变的CPAM有机体的分子和细胞特征.

主要方法:

通过切除的CPAM肺组织 (囊和对照区域) 从具有和没有KRAS突变的患者中生成气道器官.
单细胞RNA测序 (scRNA-Seq) 在有机体上进行,以分析细胞组成和基因表达.
在有机体中操纵了KRAS表达,以确定其在细胞生长和增殖中的功能作用.

主要成果:

scRNA-Seq揭示了与KRAS野生型 (KRASNEG) 囊和对照相比,KRAS突变 (KRASPOS) CPAM囊中的细胞比例不同.
在KRASPOS囊中差异表达的基因与KRAS突变肺癌中发现的基因有相似之处.
增加KRAS表达导致更大的有机体生长,增加细胞增殖,并直接影响细胞循环.

结论:

在KRAS^POS中,CPAM有机体表现出类似于KRAS突变肺癌的转录组特征.
这些有机体表现出改变的细胞组成,增强的生长和繁殖.
这些发现支持这样的假设,即KRAS突变的CPAM代表了患肺恶性瘤的风险较高的群体.

关键词:

产生的肺肺气道形.克拉斯 (Kras) 是一个国家.突变突变突变突变突变器官类动物器官类动物

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