骨形态遗传蛋白-2 和转化生长因子-β1 调节细胞增殖和异胎克劳丁-4 表达在状状细胞中
Katsumasa Ueki1, Megumi Yokoyama1, Osamu Katsumata-Kato1
1Department of Physiology, Nihon University School of Dentistry at Matsudo, Matsudo, Chiba, 271-8587, Japan.
转化生长因子-β (TGF-β) 和骨形态遗传蛋白 (BMP) 信号通路在腺损伤后被激活. 这些途径可能促进组织再生,并保护细胞屏障.
科学领域:
- 唾液腺生物学的生物学
- 细胞再生 细胞再生
- 组织修复机制 组织修复机制
背景情况:
- 唾液腺分泌功能受到组织损伤的影响,但如果损伤轻微,可以恢复.
- 组织损伤会诱导分泌颗粒体的丧失,并诱导皮细胞中皮细胞和干细胞标记物的异位表达,这表明对生存的脱差.
- 研究转化生长因子 (TGF) -β超级家族的信号传导,以了解组织损伤反应.
研究的目的:
- 为了研究TGF-β超级家族成员在组织损伤后的表达特征.
- 阐明TGF-β超级家族成员在状状细胞对受伤反应中的功能性作用.
- 为了识别与唾液腺损伤后组织再生和保护有关的信号.
主要方法:
- 隔离和培养了大鼠状状细胞.
- 使用逆转录定量PCR (RT-qPCR) 量化TGF-β超级家族表达.
- 使用细胞计数套件-8评估细胞增殖,通过免疫阻塞检查细胞粘附分子和nestin的表达,在各种抑制剂的存在下.
主要成果:
- 状状细胞的初级培养表明BMP-2,BMP-6和TGF-β1的表达增加,在Src抑制剂治疗下降.
- 抑制BMP-2/4和TGF-β信号的抑制剂减少了细胞增殖.
- 在细胞分离后观察到的克劳丁-4和内斯的表达,在接受BMP和TGF-β信号抑制剂治疗后下降.
结论:
- 骨形态遗传蛋白 (BMP) -2和TGF-β1信号通路在响应状状细胞隔离时被上调调节.
- BMP-2和TGF-β1信号传递可能在组织再生和保护中发挥作用.
- 这些通路可能会增强细胞屏障功能,有助于唾液腺恢复.
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