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Abstract Title:Calcipotriol Attenuates Form Deprivation Myopia Through a Signaling Pathway Parallel to TGF-β2诱导的胶原蛋白表达的增加。
摘要来源:
投资Ophthalmol Vis Sci。 2023年2月1日; 64(2):2。 PMID: 36723926“> 36723926 Huiman Zhuang, Hongli Ran, Fei Zhao, Nethrajeith Srinivasalu, Jia Qu, Xiangtian Zhou
Article Affiliation:Shiming Jiao
Abstract:PURPOSE: To determine the role of calcipotriol, a vitamin D3类似物,在近视发育和改变小鼠I型胶原蛋白(COL1α1)的巩膜α1链的表达中。我们还旨在确定信号传导途径是否中介上述变化与转化生长因子β2(TGF-β2)介导的Col1a1在培养的人巩膜成纤维细胞(HSFS)中介导的增加的变化不同。钙化三醇并受到形式剥夺(FD)或暴露于正常屈光内发育4周。使用腺相关病毒包装的短发夹RNA(AAV8-SHRNA)的亚第12个胶囊注入巩膜维生素D受体(VDR)表达。折射和生物特征测量评估了近视发育。 A combination of knockdown and induction strategies determined the relative contributions of the vitamin D3 and the TGF-β2 signaling pathways in modulating COL1A1 expression in HSFs.
RESULTS: Calcipotriol injections suppressed FD-induced myopia (FDM), but it had no significant effect on normal参考衣。 AAV8-shRNA注射将VDR mRNA的表达降低了42%,并将折射向近视(-3.15±0.99d,平均值±SEM)。在HSF中,VDR敲低降低了钙三醇诱导的COL1A1表达上升,但并未改变TGF-β2诱导的COL1A1表达的增加。此外,TGF-β2在COL1A1表达中增强了钙三醇诱导的上升。 TGF-βreceptor (TGFBRI/II) knockdown blunted TGF-β2-induced increases in COL1A1 expression, whereas calcipotriol-induced increases in VDR and COL1A1 expression levels were unaltered.
CONCLUSIONS: Scleral vitamin D3抑制小鼠的近视发育,可能通过激活VDR依赖性信号通路并增加了硬化COL1A1表达水平。