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新型方法靶向成纤维细胞增殖性疾病中的成纤维细胞力学转导。

Novel approaches to target fibroblast mechanotransduction in fibroproliferative diseases.

机构信息

Keenan Research Institute for Biomedical Science of the St. Michael's Hospital, and Faculty of Dentistry, University of Toronto, Toronto, Ontario, Canada.

Keenan Research Institute for Biomedical Science of the St. Michael's Hospital, and Faculty of Dentistry, University of Toronto, Toronto, Ontario, Canada.

出版信息

Pharmacol Ther. 2023 Oct;250:108528. doi: 10.1016/j.pharmthera.2023.108528. Epub 2023 Sep 12.

Abstract

The ability of cells to sense and respond to changes in mechanical environment is vital in conditions of organ injury when the architecture of normal tissues is disturbed or lost. Among the various cellular players that respond to injury, fibroblasts take center stage in re-establishing tissue integrity by secreting and organizing extracellular matrix into stabilizing scar tissue. Activation, activity, survival, and death of scar-forming fibroblasts are tightly controlled by mechanical environment and proper mechanotransduction ensures that fibroblast activities cease after completion of the tissue repair process. Conversely, dysregulated mechanotransduction often results in fibroblast over-activation or persistence beyond the state of normal repair. The resulting pathological accumulation of extracellular matrix is called fibrosis, a condition that has been associated with over 40% of all deaths in the industrialized countries. Consequently, elements in fibroblast mechanotransduction are scrutinized for their suitability as anti-fibrotic therapeutic targets. We review the current knowledge on mechanically relevant factors in the fibroblast extracellular environment, cell-matrix and cell-cell adhesion structures, stretch-activated membrane channels, stress-regulated cytoskeletal structures, and co-transcription factors. We critically discuss the targetability of these elements in therapeutic approaches and their progress in pre-clinical and/or clinical trials to treat organ fibrosis.

摘要

细胞感知和响应机械环境变化的能力对于器官损伤时至关重要,因为正常组织的结构会受到干扰或丧失。在对损伤做出反应的各种细胞中,成纤维细胞通过分泌和组织细胞外基质形成稳定的瘢痕组织,在重建组织完整性方面起着核心作用。成纤维细胞的激活、活性、存活和死亡受到机械环境的严格控制,适当的力学转导可确保在组织修复过程完成后,成纤维细胞的活性停止。相反,力学转导失调常常导致成纤维细胞过度激活或持续存在于正常修复状态之外。由此产生的细胞外基质病理性积累称为纤维化,这种情况与工业化国家中超过 40%的死亡有关。因此,人们正在研究成纤维细胞力学转导中的各种因素,以评估其作为抗纤维化治疗靶点的适用性。我们综述了成纤维细胞细胞外环境中与力学相关的因素、细胞-基质和细胞-细胞黏附结构、拉伸激活的膜通道、应激调节的细胞骨架结构和共转录因子的最新知识。我们批判性地讨论了这些因素在治疗方法中的靶向性及其在临床前和/或临床试验中治疗器官纤维化的进展。

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