循环基因NPAS2通过CDC25A介导的纤维细胞活动缓解过敏性痕形成
Pei Wei1,2,3,4, Yongqiang Xiao5, Zhaorong Xu1,2,3,4
1Burn & Wound Repair Department, Fujian Medical University Union Hospital, Fuzhou, Fujian, China.
Journal of cellular and molecular medicine
|June 23, 2025
概括
神经PAS域蛋白2 (NPAS2) 在缩性痕 (HTS) 中被上调,促进纤维细胞的增殖和迁移. 在老鼠伤口中抑制NPAS2减少了HTS的形成,这表明NPAS2是皮肤纤维化的潜在治疗标.
科学领域:
- 皮肤病学 皮肤病学
- 分子生物学分子生物学
- 伤口治愈研究研究 伤口治愈研究
背景情况:
- 神经PAS域蛋白2 (NPAS2) 与组织纤维化有关.
- 过度缩性痕 (HTS) 代表皮肤纤维化,其特征是肌纤维细胞过度活跃和细胞外基质 (ECM) 过度沉积.
- 在HTS开发中NPAS2的作用尚不清楚.
研究的目的:
- 研究NPAS2在缩性痕中的表达和功能.
- 阐明NPAS2影响纤维细胞行为和ECM沉积的分子机制.
- 评估针对HTS形成中的NPAS2的治疗潜力.
主要方法:
- 定量RT-PCR和免疫组织化学评估NPAS2表达在正常皮肤和HTS.
- 在人类皮肤纤维细胞 (HDF) 和HTS衍生的纤维细胞 (HTS-Fs) 中对NPAS2的基因操纵 (敲除和过度表达).
- 在体外测试 (流细胞计,CCK-8,transwell) 细胞增殖和迁移.
- 在分子标记物 (NPAS2, CLOCK, BMAL1, COL I, COL III, α-SMA, CDC25A) 的测试中采用西方抹杀和RT-PCR.
- 双露西法酶记者和染色体免疫沉试验以确定NPAS2-CDC25A相互作用.
- 在体内研究,使用鼠尾全厚皮肤缺陷模型,通过病毒载体对NPAS2进行敲除.
主要成果:
- 与正常皮肤相比,HTS中的NPAS2表达显著上调.
- 过度表达NPAS2增强了HDF中的COL I,COL III和α-SMA的增殖,迁移和表达.
- 敲除NPAS2可以减少HTS-Fs中的这些行为.
- NPAS2促进纤维细胞激活和ECM沉积,通过其与CDC25A的相互作用进行调解.
- 在体内,NPAS2 Knockdown抑制了老鼠伤口中的HTS形成,从而改善了组织结构和减少了痕.
结论:
- 在缩性痕中,NPAS2被上调,促进纤维细胞激活,增殖和迁移.
- NPAS2-CDC25A轴是推动HTS发展的一个关键机制.
- 针对NPAS2表明了抑制HTS形成和改善痕质量的治疗潜力.
相关概念视频
01:19Clinical Applications of Epidermal Stem Cells
2.8K
Epidermal stem cells (EpiSCs) are mainly located at the basal layer of the epidermis. These cells repair minor injuries of the skin and replace dead skin cells. However, EpiSCs’ cannot heal severe wounds such as major burns or those from diabetes or hereditary disorders. In such cases, culturing the epidermal stem cells from the patient is possible and has yielded successful treatment options, such as laboratory-grown skin grafts. These grafts are synthesized using a patient’s own...
2.8K
02:19Circadian Rhythms and Gene Regulation
4.2K
The biological clock is involved in many aspects of regulating complex physiology in all animals. It was in 1935 when German zoologists, Hans Kalmus and Erwin Bünning, discovered the existence of circadian rhythm in Drosophila melanogaster. However, the internal molecular mechanisms behind the circadian clock remained a mystery until 1984, when Jeffrey C. Hall, Michael Rosbash, and Michael W. Young discovered the expression of the Per gene oscillating over a 24-hour cycle. In subsequent...
4.2K
01:23Tissue Renewal without Stem Cells
1.8K
After cellular or tissue damage, the resident stem cells present in the human body can locally repair and regenerate the damaged tissue or organ. However, even though some tissues do not have stem cells, they can repair and regenerate with the help of pre-existing cells. For example, beta cells of the pancreas and hepatocytes of the liver can divide to renew and regenerate the tissue. Here, both cell division and cell death are well regulated by homeostasis.
However, failure of such a system...
However, failure of such a system...
1.8K