CR6-交互因子-1 在照射后通过NF-κB信号通路促进骨质结晶形成
Lixin Xiang1, Fengjie Li1, Yang Xiang1
1Basic Research Innovation Center for Acute Radiation Syndrome, Laboratory Medicine Center, Department of Blood Transfusion, Lab of Radiation Biology, The Second Affiliated Hospital, Army Military Medical University, Chongqing, 400037, China.
Radiation research
|October 10, 2023
概括
辐射暴露会增加骨质细胞形成,从而导致骨质损失. CR6相互作用因子-1 (Crif1) 通过激活NF-κB通路来促进这一过程,这表明Crif1是辐射诱导的骨损失的治疗标.
科学领域:
- 生物医学科学 生物医学科学
- 细胞生物学 细胞生物学
- 在瘤学瘤学.
背景情况:
- 放射治疗可能会导致显著的骨损失和由于辐射暴露的再吸收.
- 反应性氧物种 (ROS) 与辐射诱导的骨质结晶发生有关,但潜在的机制尚不清楚.
- CR6相互作用因子-1 (Crif1) 是一种参与各种细胞功能的蛋白质.
研究的目的:
- 调查Crif1在辐射诱导的骨质细胞形成中的作用.
- 阐明Crif1影响辐射后骨损失的分子机制.
主要方法:
- 研究了Crif1表达和骨质细胞形成在体外对辐射的反应中 (RAW264.7细胞).
- 利用siRNA击败Crif1并评估其对NF-κB信号通路组件的影响 (p65,ERK,JNK,p38,IκB-α).
- 在体内进行的研究,使用骨髓细胞特异性的Crif1淘汰赛小鼠 (Lyz2Cre;Crif1fl/fl) 来评估辐射后的骨损失.
主要成果:
- 辐射暴露增加了Crif1的表达,并增强了骨质细胞原始体的骨质细胞生成.
- Crif1 knockdown 降低了NF-κB p65的酸化和核转位,抑制了被辐射细胞中的骨质细胞生成.
- 与对照小鼠相比,在小鼠中,骨髓细胞特异性删除Crif1减轻了照射后的骨损失.
- Crif1调解了NF-κB p65酸化和核转位,通过NF-κB通路辐射后促进骨质细胞形成.
结论:
- Crif1在调解辐射诱导的骨质细胞形成和随后的骨质损失方面发挥着关键作用.
- 通过NF-κB信号通路,Crif1促进骨质细胞形成.
- 准Crif1可能为减轻辐射诱导的骨损失提供了一种新的治疗策略.
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