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细胞因子的组合作用诱导M2类巨细胞在形甲状腺癌中
Takahito Kimura1, Michael Kruhlak2, Li Zhao1
1Laboratory of Molecular Biology, National Cancer Institute, National Institutes of Health Bethesda, MD 20892, USA.
American journal of cancer research
|January 13, 2025
概括
与瘤相关的巨细胞 (TAMs) 促进甲状腺癌 (ATC) 的攻击性. 五种关键细胞因子协同诱导M2巨细胞,而这些巨细胞反过来促进ATC细胞生长,这表明需要针对TAM的组合疗法.
科学领域:
- 内分泌学 在内分泌学.
- 在瘤学瘤学.
- 免疫学 免疫学 免疫学
背景情况:
- 无塑性甲状腺癌 (ATC) 是一种致命的内分泌恶性瘤.
- 已知瘤相关巨细胞 (TAMs) 增强了ATC的攻击性.
- 驱动ATC瘤微环境 (TME) 中TAM诱导的特定因素需要进一步阐明.
研究的目的:
- 在ATC受条件介质 (CM) 中识别诱导M2类巨细胞 (M2) 的刺激因子.
- 研究这些因素对M2分化和信号通路的协作作用.
- 为了确定CM诱导的M2对ATC细胞增殖的影响.
主要方法:
- 人类ATC细胞系 (8505C,THJ-11T,THJ-16T) 用于生成条件介质 (CM).
- 使用CM将THP-1细胞分化为M2巨细胞,并评估M2标记物 (CD163,CD204,CCL13).
- 细胞因子阵列,ELISA和西部抹迹被用于分析细胞因子概况,信号通路 (STAT3,ERK,PI3K-AKT) 和增殖标志物 (Ki-67,cMYC,cyclin D1).
主要成果:
- 来自ATC细胞的CM诱导了M2分化,具有不同的容量 (16T>8505C>11T).
- 五种细胞因子 (IL-6,IL-8,MCP-1,TIMP-1,TGF-β1) 被确定为关键诱导剂,它们协同作用,模仿完整的CM活性.
- 这些细胞因子激活STAT3,ERK和PI3K-AKT信号,促进M2诱导和随后分泌增长因子,增强ATC细胞增殖.
结论:
- 这项研究确定了负责ATC TME中M2巨诱导的关键协作细胞因子.
- 通过分泌生长因子,CM诱导的M2巨细胞促进ATC细胞的增殖.
- 针对ATC中的TAM可能需要组合疗法才能有效治疗.
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