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通过结合粘附分子A/miR-106b轴对糖尿病伤口愈合的转录后调节
Teng Gong1, Xiaoming Fan2, Minjuan Wu3
1Burn & Wound Repair Department, Fujian Medical University Union Hospital, No. 29 Xinquan Road, Fuzhou, Fujian 350001, China; Fujian Burn Institute, Fujian Medical University Union Hospital, No. 29 Xinquan Road, Fuzhou, Fujian 350001, China; Fujian Burn Medical Center, Fujian Medical University Union Hospital, No. 29 Xinquan Road, Fuzhou, Fujian 350001, China; Fujian Provincial Key Laboratory of Burn and Trauma, Fujian Medical University Union Hospital, No. 29 Xinquan Road, Fuzhou, Fujian 350001, China.
糖尿病伤口愈合受到JAM-A 3'-UTR的替代拼接的影响,导致过度的miR-106b释放. 这对状细胞的增殖和迁移产生调节障碍,阻碍了伤口的修复.
科学领域:
- 分子生物学分子生物学
- 伤口治愈研究研究 伤口治愈研究
- 生物材料科学 生物材料科学
背景情况:
- 尽管科学进步,糖尿病伤口愈合机制仍然不清楚.
- 研究结合粘附分子A (JAM-A) 在糖尿病伤口愈合的转录后调节中的作用.
研究的目的:
- 阐明JAM-A 3 -UTR在糖尿病伤口再上皮质化中的作用.
- 确定关键的微RNA (miRNA) 参与者及其参与糖尿病伤口愈合的基因.
- 了解miR-106b-5p对角质细胞增殖和迁移的影响.
主要方法:
- 使用了小鼠伤口模型,血素和色素染色,以及痕分析.
- 使用RNA拉下,microRNA测序和生物信息学来识别miRNA.
- 确认了JAM-A 3 -UTR的替代拼接,使用现场杂交,免疫组织化学,西部涂抹和PCR.
主要成果:
- 在糖尿病伤口中,JAM-A 3 -UTR加速了重新上皮化.
- 糖尿病条件诱导了JAM-A 3 -UTR中的缩短拼接,导致过度的miR-106b-5p释放.
- 上调的miR-106b-5p抑制了PTEN/TIAM1,过度激活了增殖,并通过AKT和RAC1途径抑制了角质细胞的迁移.
结论:
- 糖尿病中JAM-A 3 -UTR的替代拼接会导致过度的miR-106b释放.
- 通过减少PTEN/TIAM1的表达,miR-106b的上调会影响糖尿病伤口愈合.
- 这导致了质细胞的过度增殖和减少迁移,破坏了重新表皮化.
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