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Updated: May 9, 2025

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Wnt5a诱导了ROR1依赖的NF-κB激活,以增强MMP-9表达和慢性淋巴细胞白血病的侵入性
Md Kamrul Hasan1, George F Widhopf Ii2, Emanuela M Ghia2
1Center for Novel Therapeutics, Moores Cancer Center, University of California San Diego, La Jolla, CA, USA. k0hasan@ucsd.edu.
Leukemia
|April 28, 2025
概括
矩阵金属蛋白酶-9 (MMP-9) 有助于慢性淋巴细胞白血病 (CLL) 细胞扩散. 向ROR1蛋白与zilovertamab阻断Wnt5a诱导的MMP-9,抑制CLL细胞入侵.
科学领域:
- 血液学 血液学 血液学
- 癌症生物学 癌症生物学
- 分子瘤学分子瘤学
背景情况:
- 矩阵金属蛋白酶-9 (MMP-9) 参与慢性淋巴细胞白血病 (CLL) 细胞的扩散和透.
- 在CLL中高MMP-9表达与更具侵略性的疾病进展相关.
研究的目的:
- 研究瘤胚胎蛋白ROR1与CLL细胞中MMP-9表达之间的关系.
- 阐明Wnt5a信号传导在调节MMP-9产生和CLL细胞侵入性的作用.
- 评估向ROR1对抗Wnt5a诱导的MLL中的MMP-9活性的治疗潜力.
主要方法:
- 在表达不同水平的ROR1.1.的CLL细胞中量化MMP-9水平.
- 使用Wnt5a刺激CLL细胞,评估MMP-9释放和Matrigel入侵.
- 对BTK抑制剂,齐洛维他马布,NF-κB抑制剂和MMP-9抑制剂对Wnt5a诱导作用的抑制作用的评估.
- 使用siRNA用于NF-κB-p65和MMP-9.9的基因沉默.
主要成果:
- 具有高ROR1表达的CLL细胞表现出明显更高的MMP-9水平.
- 刺激Wnt5a增强了MMP-9的表达和释放,增加了CLL细胞的侵入性.
- 齐洛韦他马布,但不是BTK抑制剂,阻断了Wnt5a诱导的MMP-9效应.
- NF-κB和MMP-9的抑制取消了Wnt5a介导的CLL细胞入侵的增强.
结论:
- 通过ROR1传递Wnt5a信号,通过NF-κB激活诱导CLL细胞中的MMP-9表达.
- 这一途径增强了CLL细胞扩散和淋巴细胞组织透,这对疾病进展至关重要.
- 向ROR1是一个潜在的治疗策略,可以抑制MMP-9驱动的CLL细胞贩运.
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