脂肪干细胞衍生的癌症相关纤维细胞通过SFRP4信号促进胰腺腺癌的进展
Joseph Rupert1, Lingyi Cai2,3, Alexes C Daquinag1
1Center for Metabolic and Degenerative Diseases, Institute of Molecular Medicine for the Prevention of Disease, McGovern Medical School, The University of Texas Health Sciences Center at Houston, Houston, TX 77030, USA.
Cancers
|January 28, 2026
概括
分泌的状相关蛋白4 (SFRP4) 通过促进癌症相关纤维细胞 (CAF) 激活,驱动胰腺管道腺癌 (PDAC) 的进展. 向脂肪 stromal 细胞 (ASC) 中的 SFRP4 抑制瘤生长和转移,提供了一个潜在的治疗策略.
科学领域:
- 在瘤学瘤学.
- 细胞生物学 细胞生物学
- 分子生物学分子生物学
背景情况:
- 胰腺管道腺癌 (PDAC) 的进展受癌症相关纤维细胞 (CAF) 的影响.
- 脂肪 stromal 细胞 (ASCs) 可以分化为CAFs,与增加的瘤侵入性和较差的患者预后相关.
- 了解ASC-CAF转换的分子机制对于开发向疗法至关重要.
研究的目的:
- 研究瘤细胞诱导ASC成为CAF的分子机制.
- 确定关键的分子参与者,特别关注LINC01614和SFRP4,涉及ASC-CAF分化及其对PDAC进展的影响.
- 评估在PDAC中准SFRP4的治疗潜力.
主要方法:
- 共同培养人类内脏ASC与人类PDAC细胞系Capan-1,以建模瘤-瘤相互作用.
- 在体内研究中,小鼠与小鼠KPC细胞进行了正位植入,以评估瘤进展.
- 在ASC中进行基因淘汰实验 (SFRP4和LINC01614),以确定它们的功能作用.
- 基因组分析以确定激活的信号通路和基因表达变化.
主要成果:
- 在ASC中,Capan-1共同培养诱导了Wnt和TGFβ信号和细胞外基因表达 (ECM).
- LINC01614和SFRP4都对Wnt/TGFβ信号传递和PDAC细胞在ASC中的ECM诱导至关重要.
- 在ASC中SFRP4淘汰抑制了Capan-1细胞迁移和入侵.
- 在SFRP4淘汰赛小鼠中的瘤表现出降低的脱质形成,较少的上皮质脱差,增长缓慢,以及转移潜力的降低.
结论:
- 通过ASC-CAF转换调节瘤微环境,SFRP4在促进PDAC进展方面发挥着至关重要的作用.
- 在PDAC的背景下,SFRP4是Wnt/TGFβ信号传输和ECM重塑的关键媒介.
- 在抑制胰腺癌生长和转移方面,SFRP4是一个有前途的治疗标.
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