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CRACD的损失会诱导肺腺癌的神经内分泌细胞可塑性

Bongjun Kim¹, Shengzhe Zhang¹, Yuanjian Huang¹

¹Department of Experimental Radiation Oncology, Division of Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA.

|May 26, 2024

概括

在肺腺癌 (LUAD) 中,CRACD 失活驱动神经内分泌 (NE) 细胞可塑性,通过促进细胞脱差和干性. 这一发现澄清了NE细胞可塑性的机制,并为LUAD治疗提供了治疗点.

科学领域:

在瘤学瘤学.
细胞生物学细胞生物学
分子生物学分子生物学

背景情况:

瘤细胞可塑性是瘤内异质性和癌症治疗耐药性的关键驱动因素,包括肺腺癌 (LUAD).
一个LUAD细胞的子集可以经历表型转变为神经内分泌 (NE) 瘤细胞,但基本机制仍然基本不明.
在各种癌症中,CRACD (actin动态的封闭蛋白抑制剂) 经常被禁用,这表明它可能在瘤进展中发挥作用.

研究的目的:

阐明CRACD在调节肺腺癌 (LUAD) 中神经内分泌 (NE) 细胞可塑性的作用.
研究CRACD无活化影响LUAD细胞分化和异质性的分子机制.

主要方法:

肺表皮和LUAD细胞系中的CRACD淘汰 (KO) 模型.
在体内使用CRACD KO的LUAD小鼠模型.
对LUAD细胞和患者瘤的单细胞转录组分析.

主要成果:

在LUAD细胞和肺表皮中,CRACD KO抑制了与NE相关的基因表达.
在LUAD小鼠模型中的CRACD缺陷增强了内异质性和NE基因表达.
单细胞转录组学揭示,CRACD KO诱导的NE细胞可塑性涉及细胞脱差异化和干性通路的激活.
LUAD患者的瘤显示出一个独特的NE细胞集群,其行为因子重塑受损,证实了CRACD的作用.

结论:

在LUAD中,CRACD在限制NE细胞可塑性方面发挥着关键作用.
CRACD的失活促进了LUAD细胞的脱差,并有助于瘤异质.
了解CRACD的功能,可以了解LUAD的进展情况以及针对NE细胞可塑性的潜在治疗策略.

关键词:

在ASCL1中,CP: 癌症癌症癌症在CRACD中,使用的是CRACD.这就是 CRAD CRAD 的意思.一个KIAA121111的情况.细胞脱差分化的过程.细胞的可塑性细胞的可塑性肺部腺癌瘤是什么神经内分泌细胞的可塑性治疗耐药性治疗耐药性瘤异质性的异质性

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