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通过激活Notch1通路,MFAP2诱导骨髓肉瘤细胞的表皮-介质细胞转化
Shan Jiang1, Ziang Zheng1, Bo Yuan1
1Department of Bone and Soft Tissue Repair and Reconstructive Surgery, The Second Hospital of Dalian Medical University, Dalian, China.
Translational cancer research
|July 11, 2024
概括
微纤维相关蛋白2 (MFAP2) 通过调节Notch1通路和上皮-介质细胞转换 (EMT) 来促进骨髓瘤 (OS) 的进展. 针对MFAP2为OS患者提供了潜在的治疗策略.
科学领域:
- 在瘤学瘤学.
- 分子生物学分子生物学
- 生物化学 生物化学
背景情况:
- 骨髓瘤 (OS) 是一种主要的骨癌,起源于介质细胞组织.
- 微纤维素相关蛋白2 (MFAP2) 涉及各种癌症,促进表皮-介质细胞转换 (EMT).
- MFAP2在OS病原体中的特定作用仍未得到研究.
研究的目的:
- 阐明MFAP2在骨髓瘤中的作用.
- 调查MFAP2与OS中的Notch1信号通路之间的关系.
- 评估MFAP2作为骨髓瘤的潜在治疗点.
主要方法:
- 在OS细胞 (U2OS) 中使用shRNA使MFAP2沉默,通过qRT-PCR进行验证.
- 从公共数据库中分析了MFAP2的基因表达数据.
- 细胞行为,EMT标记物和Notch1通路激活被评估使用各种测定方法,包括CCK-8,伤口愈合,Transwell,西部涂抹和qRT-PCR.
- 在异种移植小鼠模型中评估了瘤性.
主要成果:
- 与正常骨质母细胞相比,MFAP2表达在OS细胞系中升高.
- 抑制MFAP2抑制了OS细胞的活力,迁移和入侵,同时降低EMT标记物 (N-cadherin,vimentin) 的调节,并影响β-catenin.
- MFAP2表达与Notch1通路正相关,MFAP2抑制降低了Notch1水平.
- 诺奇1激活抵消了MFAP2对OS细胞恶性瘤的抑制作用.
- 在体内,MFAP2倒置抑制了瘤生长和EMT标志物的表达.
结论:
- MFAP2作为Notch1信号通路的上游调节器,在骨髓瘤中驱动EMT.
- 在OS模型中,MFAP2抑制显示出抗瘤效应.
- 在骨髓瘤治疗中,MFAP2是一个有前途的治疗标.
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