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在乳腺组织中,SFRP1降低了WNT介导的M2巨细胞标志物表达
Kelly J Gregory1,2, Holly Mason3, Jesse Casaubon3
1Pioneer Valley Life Sciences Institute, Baystate Medical Center, Springfield, MA, 01199, USA. Kelly.Gregory@baystatehealth.org.
Cancer immunology, immunotherapy : CII
|March 30, 2024
概括
分泌的Frizzled相关蛋白1 (SFRP1) 对抗Wnt信号,影响乳腺发育和乳腺癌中的M2巨标记物. 在瘤微环境中,SFRP1可能会抑制Wnt信号传递.
科学领域:
- 生物化学 生化学
- 免疫学 免疫学 免疫学
- 在瘤学瘤学.
背景情况:
- Wnt信号传递对于乳腺发育和瘤发生至关重要.
- 众所周知,Wnt配体促进M2巨细胞的两极分化.
- 分泌的状相关蛋白1 (SFRP1) 作为Wnt信号对抗剂.
研究的目的:
- 为了研究SFRP1对M2巨细胞标记物表达在乳腺发育中的影响.
- 确定Wnt信号传递及其SFRP1对人类乳腺组织M2标记物的对抗性的影响.
- 在乳腺癌中识别由Wnt信号和SFRP1调节的新型基因.
主要方法:
- 具有针对Sfrp1的除的小鼠模型,用于测量乳腺发育期间和对肥胖的反应中Arg1的表达.
- 用Wnt3a和rSFRP1.1治疗人类患者衍生的扩展性 (PDE) 乳腺组织.
- 在Wnt3a和rSFRP1治疗后对PDE样本进行大量RNA测序分析.
主要成果:
- 在小鼠中失去Sfrp1增加了M2标记物Arg1.1的表达.
- 在乳腺PDEs中,Wnt3a治疗增加了人类M2标志物 (CD209,CCL18),而rSFRP1.1则逆转了这一效应.
- RNA测序揭示了新型Wnt3a调节基因,包括参与转移的化学酶 (CCL11,CCL26),这些基因被RSFRP1.1.抑制.
结论:
- 在人类乳腺组织中,SFRP1对抗Wnt3a诱导的M2巨细胞标志物表达.
- 通过调节Wnt信号传输,SFRP1可能在调节瘤微环境方面发挥作用.
- 抑制Wnt信号的SFRP1可能会降低前转移性化学激素的表达.
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