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沉默线粒体守门人VDAC1作为膀癌的潜在治疗方法
Belal Alhozeel1, Swaroop Kumar Pandey1, Anna Shteinfer-Kuzmine2
1Department of Life Sciences, Ben-Gurion University of the Negev, Beer-Sheva 84105, Israel.
Cells
|April 12, 2024
概括
新的膀癌 (BC) 治疗向电压依赖的阳离子通道1 (VDAC1). 在BC模型中沉默VDAC1抑制瘤生长和入侵,提供了一个有前途的治疗策略.
科学领域:
- 在瘤学瘤学.
- 分子生物学分子生物学
- 生物化学 生化学
背景情况:
- 目前的膀癌 (BC) 治疗方法,如卡尔梅特-盖林菌 (BCG) 疗效有限,70%的患者需要进行激进囊切除术.
- 现有的二线疗法,如免疫检查点抑制剂,在临床试验中也取得了有限的成功.
- 对于有效治疗膀癌的新型治疗策略有着至关重要的需求.
研究的目的:
- 为了研究电压依赖性离子通道1 (VDAC1) 在膀癌中的作用.
- 评估在临床前膀癌模型中使用小干扰RNA (siRNA) 静止VDAC1的治疗潜力.
主要方法:
- 在BC细胞系 (UM-UC3,HTB-5) 中分析了VDAC1表达.
- 向VDAC1的siRNA (si-m/hVDAC1-B) 用于降低BC细胞系和小鼠模型中的VDAC1水平.
- 研究人员使用了两种BC小鼠模型:皮下UM-UC3异体移植和N-Butyl-N-(4-hydroxybutyl) 氨酸 (BBN) 诱导的BC.
- 在BBN诱导模型中,si-m/hVDAC1-B通过PLGA-PEI纳米粒子静脉输送.
主要成果:
- 在BC细胞系UM-UC3和HTB-5中,VDAC1过度表达.
- 静止VDAC1降低了BC细胞活力,线粒体膜潜力和ATP水平.
- 在皮下UM-UC3瘤中,si-m/hVDAC1-B通过降低关键代谢蛋白的调节来抑制瘤生长和重编程新陈代谢.
- si-m/hVDAC1-B还降低了癌症干细胞标记物,血管生成和上皮-介质细胞过渡.
- 在BBN诱导的BC小鼠中,静脉内给药si-m/hVDAC1-B纳米颗粒减少了瘤面积和肌肉入侵.
结论:
- VDAC1是膀癌进展和高能代谢的重要因素.
- 用siRNA (si-m/hVDAC1-B) 准VDAC1在临床前膀癌模型中显示出强大的抗瘤作用.
- si-m/hVDAC1-B作为一种用于膀癌治疗的新型肠道治疗剂具有前途.
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