来自人类皮肤纤维细胞的外体细胞保护皮肤免受UVB诱导的光衰老
A Yeon Park1, Jung Ok Lee1, Youna Jang1
1Department of Dermatology, College of Medicine, Chung‑Ang University, Seoul 06974, Republic of Korea.
International journal of molecular medicine
|October 27, 2023
概括
来自人类前皮纤维细胞 (BJ-5ta Exo) 的外体细胞有效地对抗紫外线B (UVB) 辐射引起的皮肤光衰. 这些外体减少氧化应激,促进DNA修复,并改善皮肤弹性和水分在小鼠模型.
科学领域:
- 皮肤病学 皮肤病学
- 细胞生物学 细胞生物学
- 生物技术是生物技术.
背景情况:
- 外体正在成为皮肤修复的治疗剂.
- BJ-5ta外体对紫外线B (UVB) 诱导的光衰老的影响仍未得到研究.
- 光衰老是由UVB照射引起的,导致皮肤严重受损.
研究的目的:
- 评估从人类前皮纤维细胞BJ-5ta (BJ-5ta Exo) 获得的外体的抗光衰老潜力.
- 研究BJ-5ta Exo对UVB辐射的人体皮肤纤维细胞和SKH-1无毛小鼠的影响.
主要方法:
- 评估了氧化应激标志物 (ROS,SOD,GPx,catalase) 和抗氧化途径 (Nrf2).
- 分析了DNA损伤和修复标记 (γH2AX,p53/21,裂开的PARP,RS52) 和TGF-β1/Smad信号传递.
- 在小鼠模型中评估了衰老标志物 (β-galactosidase,p16) 和光衰老症状 (TEWL,纹,MMP-1,原,弹性质).
主要成果:
- BJ-5ta Exo在UVB后减少了活性氧物种和增强了抗氧化酶表达.
- BJ-5ta Exo减轻了UVB诱导的DNA损伤,促进了DNA修复,并激活了TGF-β1 / Smad通路.
- 在小鼠中,BJ-5ta Exo抑制了UVB诱导的衰老,并防止了皮肤屏障破坏,纹形成和基质降解,同时保留了原和弹性素.
结论:
- BJ-5ta Exo通过对抗氧化应激,促进DNA修复和保存皮肤结构来证明显著的抗光衰老特性.
- BJ-5ta Exo显示为一种新的治疗剂,用于预防和治疗皮肤光衰老.
- 这些发现支持BJ-5ta Exo在抗衰老功效的化品配方中的潜在使用.
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