巨细胞的功能和胆胆胆瘤在胆胆瘤微环境中的相互作用
Anda Shi1, Zengli Liu1,2, Zhongqi Fan3
1Department of General Surgery, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, China.
Gut
|March 8, 2024
概括
胆汁组胺 (HA) 通过刺激巨细胞和激活癌细胞增殖,促进胆管癌 (CCA) 的进展. 通过SLC22A3进口降解HA抑制了CCA生长,揭示了一个新的治疗点.
科学领域:
- 代谢学和癌症生物学
- 免疫学和瘤学
背景情况:
- 胆汁代谢物在胆管癌 (CCA) 进展中的作用尚未得到研究.
- 了解胆汁组成和癌症发展之间的相互作用对于确定治疗点至关重要.
研究的目的:
- 在良性和恶性胆道中识别不同的胆汁代谢物.
- 阐明CCA中胆汁代谢物的生成,功能和降解.
- 调查组胺 (HA) 和其受体在CCA进展中的作用.
主要方法:
- 从CCA和良性胆管狭窄症患者的胆汁的代谢学分析.
- 在体外和体内测试,以评估乳腺细胞 (MC) 脱粒和基因组胺释放.
- 单细胞mRNA测序用于组胺受体表达映射.
- 来自患者的异种移植和正极形小鼠模型来研究HA受体功能.
- 通过CRISPR/Cas9选,识别参与HA诱导增殖的基因.
主要成果:
- 在CCA中胆汁HA水平升高与预后较差相关.
- 癌症相关纤维细胞 (CAFs) 招募MCs,在N,N-二甲基-1,4-二胺 (DMPD) 的胆汁刺激后释放HA.
- HA通过不同的受体通路 (HRH1和HRH2) 促进CCA血管生成,淋巴血管生成和增殖.
- 溶解载体家族22成员3 (SLC22A3) 降解胆汁HA,其删除导致HA积累.
结论:
- 由刺激的MCs释放的胆汁HA显著促进了CCA的进展.
- 在CCA细胞和CAF中HA受体的不同表达介导着明显的瘤效应.
- 涉及MCs和HA的CCA和胆汁之间的相互作用代表了瘤发育中的关键机制.
- 胆汁HA的SLC22A3介导的降解提供了一个潜在的治疗策略.
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