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德克萨米他驱动巨细胞再极化,与增加三阴性乳腺癌的攻击性有关
Mohamed M Shamekh1,2,3, Birgitta Lindqvist2,4, Ivan Nalvarte5,6
1Department of Neurobiology, Care Sciences and Society, Division of Neurogeriatrics, Karolinska Institutet, Solna, Sweden.
Cell death & disease
|December 18, 2025
概括
葡萄糖皮质类药物 (GCs),像甲 (DEX) 一样,可以将抗瘤性巨细胞重新编程成亲瘤性巨细胞. 这种巨细胞再极化可能会促进乳腺癌患者的瘤进展和转移.
科学领域:
- 免疫学 免疫学 免疫学
- 在瘤学瘤学.
- 药理学 药理学是指药理学的学科.
背景情况:
- 葡萄糖皮质类药物 (GCs) 具有抗炎性质,用于治疗癌症患者的化疗副作用.
- GCs对瘤相关巨细胞 (TAM) 的影响及其在瘤进展中的潜在作用仍然不完全理解.
研究的目的:
- 调查一种常见的GC - - 德克萨米他 (DEX) - - 是否能调节巨细胞两极分化,使其转向一种亲瘤原生的表型.
- 在体内评估DEX诱导的巨细胞重编程对三阴性乳腺癌 (TNBC) 细胞行为和瘤进展的影响.
主要方法:
- 德克萨 (DEX) 对THP-1单细胞衍生的巨细胞进行治疗,以诱导分化和再极化.
- 在体外评估巨细胞刺激的癌细胞增殖和入侵.
- 在体内研究中,使用与DEX和帕克利塔塞尔治疗的TNBC的正位体小鼠模型.
- 用DEX处理的巨细胞的转录组分析和与TAM签名的比较.
主要成果:
- DEX诱导了M1巨细胞的剂量依赖的分化成M2类巨细胞,即使存在M1线索.
- 在实验室中,DEX再极化M1巨细胞促进了TNBC细胞的增殖和入侵.
- 在体内,DEX治疗降低了帕克利塔塞尔的疗效,增加了M2型TAM,并在TNBC模型中增强了肺转移.
- 转录组分析显示了DEX处理的M1巨细胞,M2巨细胞和侵袭性乳腺癌TAMs之间的重叠.
结论:
- 德甲 (DEX) 呈现出显著的巨细胞再极化可塑性,将它们转移到一种亲瘤的M2类状态.
- 这种DEX诱导的重编程可以增强乳腺癌细胞的增殖,入侵和转移.
- 建议在乳腺癌患者,特别是接受化疗的患者中使用高剂量GC时谨慎使用,因为它可能具有促进瘤的作用.
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