LRH-1是瘤微环境中的中性粒细胞驱动免疫反应的新型调节剂
bioRxiv : the preprint server for biology
|September 26, 2025
概括
肝受体同质-1 (LRH-1) 调节骨髓细胞功能,对乳腺癌和卵巢癌的进展至关重要. 向LRH-1提供了一种新的策略来对抗癌症转移和复发.
科学领域:
- 免疫学 免疫学 免疫学
- 在瘤学瘤学.
- 分子生物学分子生物学
背景情况:
- 血胆固醇升高与乳腺癌和卵巢癌的不良结果有关.
- 髓状免疫细胞对胆固醇波动和调节性蛋白质敏感.
- 在癌症期间,肝受体同质-1 (LRH-1) 在髓状细胞中的作用在很大程度上是未知的.
研究的目的:
- 在乳腺和卵巢癌进展的背景下,研究LRH-1在髓状细胞,特别是中性粒细胞中的功能.
- 探索LRH-1对与癌症相关的中性粒细胞行为的影响,例如迁移,NETosis,细胞和T细胞相互作用.
主要方法:
- 利用小分子连接物调节中性粒细胞中的LRH-1活性.
- 评估了中性粒细胞迁移,细胞化,NETosis和T细胞共同培养反应.
- 在乳腺癌小鼠模型 (4T1,E0771,D2.0R) 中使用LRH-1调节剂,以评估瘤生长,复发和转移.
主要成果:
- LRH-1小分子配体调节了中性粒细胞向癌细胞的迁移和细胞化.
- 激活LRH-1增强了CD4+T细胞扩张,而抑制则抑制了它.
- 激活LRH-1减少了NETosis;反向的激励增强了它.
- 在小鼠模型中,LRH-1逆激素加速了瘤生长和转移.
- 在休眠病变模型中,LRH-1激动剂延迟了瘤复发.
结论:
- LRH-1 是瘤微环境中的中性粒细胞介导免疫反应的新型调节剂.
- 调节中性粒细胞中的LRH-1活性为抑制转移和预防乳腺癌复发提供了潜在的治疗策略.
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