[关键词]
[摘要]
近视是全球高发的屈光不正性眼病,眼轴异常延长是其核心结构特征,而巩膜重塑是驱动眼轴延长的终末事件。转化生长因子-β(TGF-β)作为调控组织重塑的核心细胞因子,通过多信号轴网络调控巩膜成纤维细胞表型、细胞外基质(ECM)代谢及组织力学特性,在近视性巩膜重塑中发挥关键作用。文章系统梳理了TGF-β介导巩膜重塑的核心信号机制。TGF-β作为核心驱动因子,通过其下游Smad与Rho/Rho激酶两大核心信号轴,从转录调控与细胞力学两个层面协同驱动巩膜重塑,骨形态发生蛋白(BMP)作为TGF-β超家族重要成员,是核心信号轴的关键负向调节因子,通过拮抗TGF-β/Smad信号维系巩膜稳态。此外,TGF-β核心信号轴还可能与Wnt/β-catenin、PI3K/Akt等通路存在交叉对话。文章明确了TGF-β介导的信号轴网络在近视进展中的核心意义,为理解近视性巩膜重塑的分子机制提供了系统性的理解框架,同时指出信号轴交叉分子、阶段特异性作用及临床转化等领域的研究缺口,为近视精准防控与靶向治疗提供新思路。
[Key word]
[Abstract]
Myopia is a globally prevalent refractive eye disease, with abnormal axial elongation as its core structural feature, and scleral remodeling is the key terminal event driving axial elongation. Transforming growth factor-β(TGF-β), as a core cytokine regulating tissue remodeling, modulates the phenotype of scleral fibroblasts, extracellular matrix(ECM)metabolism, and tissue mechanical properties through a multi-signaling axis network, thereby playing a crucial role in myopic scleral remodeling. This article systematically summarizes the core signaling mechanisms of TGF-β-mediated scleral remodeling. As a core driver, TGF-β synergistically promotes scleral remodeling at both transcriptional regulatory and cellular mechanical levels through its two downstream core signaling axes, namely Smad and Rho/ROCK. Bone morphogenetic protein(BMP), an important member of the TGF-β superfamily and a key negative regulator of the core signaling axes, maintains scleral homeostasis by antagonizing the TGF-β/Smad signaling. Additionally, the TGF-β core signaling axes may crosstalk with pathways such as Wnt/β-catenin and PI3K/Akt. This article clarifies the core significance of the TGF-β-mediated signaling axis network in the progression of myopia, provides a systematic framework for understanding the molecular mechanisms of myopic scleral remodeling, and identifies research gaps in areas such as crosstalk molecules among signaling axes, stage-specific functions, and clinical translation. It also offers novel insights for the precise prevention, control, and targeted treatment of myopia.
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[基金项目]
南京中医药大学大学生创新训练项目(No.X202510315402); 南京中医药大学附属医院2025年度院级课题(2004)国自然培育专项(No.Y25069)