瘤微环境中的内皮-介质细胞过渡促进前列腺癌的神经内分泌分化
Takumi Kageyama1, Manabu Kato1, Shiori Miyachi1
1Department of Nephro-Urologic Surgery and Andrology, Mie University Graduate School of Medicine, Tsu, Japan.
Cancer science
|July 24, 2025
概括
矛盾的是,前列腺癌的治疗可能会导致一种更具侵略性的形式,神经内分泌前列腺癌 (NEPC). 这通过一种涉及内皮-介质酶过渡 (EndoMT) 和颗粒细胞-巨细胞殖民地刺激因子 (GM-CSF) 的机制发生.
科学领域:
- 在瘤学瘤学.
- 癌症生物学 癌症生物学
- 瘤微环境 瘤微环境
背景情况:
- 神经内分泌前列腺癌 (NEPC) 是割耐性前列腺癌 (CRPC) 的一种攻击性亚型.
- 在使用雄激素受体 (AR) 途径抑制剂治疗期间,经常出现NEPC.
- 瘤微环境在NEPC发育中的作用,特别是内皮细胞-介质细胞过渡 (EndoMT),尚不清楚.
研究的目的:
- 调查EndoMT对NEPC发展的潜在贡献.
- 阐明将EndoMT与NEPC联系起来的分子机制.
- 确定预防NEPC发展的治疗点.
主要方法:
- 人的静脉内皮细胞 (HUVEC) 被诱导使用IL-1β和TGF-β2.2进行EndoMT.
- 在LNCaP前列腺癌细胞的共同培养中,进行了EndoMTed HUVEC.
- 使用了转录组分析,GM-CSF中和 (mavrilimumab),CSF2RA淘汰 (siRNA) 和GM-CSF刺激.
- 评估了前列腺癌细胞和内皮细胞之间的相互信号循环.
主要成果:
- 在LNCaP细胞中,EndoMTed HUVEC促进了神经内分泌的分化和功能变化.
- 固体MTED HUVEC显著提高了颗粒细胞 - 巨细胞殖民地刺激因子 (GM-CSF) 的表达.
- 中和GM-CSF信号或准其受体 (CSF2RA) 抑制了LNCaP细胞中的NEPC表型和STAT3信号.
- 单独的GM-CSF在LNCaP细胞中诱导了NEPC特征.
- 经过酶胺治疗的LNCaP细胞分泌IL-1β和TGF-β2,诱导内皮细胞中的EndoMT,建立一个反循环.
结论:
- 由瘤衍生的细胞因子驱动的内皮-介质细胞过渡 (EndoMT) 有助于神经内分泌前列腺癌 (NEPC) 的发展.
- 一个涉及内皮GM-CSF分泌的副环,由抗雄激素疗法触发,促进NEPC.
- 准EndoMT或GM-CSF信号是一种潜在的策略,可以克服前列腺癌的治疗耐药性.
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