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药理学刺激可溶性鸟苷酸环化酶可拮抗人结膜成纤维细胞的促纤维化激活。

Pharmacological Stimulation of Soluble Guanylate Cyclase Counteracts the Profibrotic Activation of Human Conjunctival Fibroblasts.

机构信息

Section of Anatomy and Histology, Department of Experimental and Clinical Medicine, University of Florence, Largo Brambilla 3, 50134 Florence, Italy.

Section of Experimental Pathology and Oncology, Department of Experimental and Clinical Biomedical Sciences "Mario Serio", University of Florence, Viale Morgagni 50, 50134 Florence, Italy.

出版信息

Cells. 2024 Feb 18;13(4):360. doi: 10.3390/cells13040360.

Abstract

Conjunctival fibrosis is a serious clinical concern implicated in a wide spectrum of eye diseases, including outcomes of surgery for pterygium and glaucoma. It is mainly driven by chronic inflammation that stimulates conjunctival fibroblasts to differentiate into myofibroblasts over time, leading to abnormal wound healing and scar formation. Soluble guanylate cyclase (sGC) stimulation was found to suppress transforming growth factor β (TGFβ)-induced myofibroblastic differentiation in various stromal cells such as skin and pulmonary fibroblasts, as well as corneal keratocytes. Here, we evaluated the in vitro effects of stimulation of the sGC enzyme with the cell-permeable pyrazolopyridinylpyrimidine compound BAY 41-2272 in modulating the TGFβ1-mediated profibrotic activation of human conjunctival fibroblasts. Cells were pretreated with the sGC stimulator before challenging with recombinant human TGFβ1, and subsequently assayed for viability, proliferation, migration, invasiveness, myofibroblast marker expression, and contractile properties. Stimulation of sGC significantly counteracted TGFβ1-induced cell proliferation, migration, invasiveness, and acquisition of a myofibroblast-like phenotype, as shown by a significant downregulation of , , , , , , , and mRNA levels, as well as by a significant reduction in α-smooth muscle actin, N-cadherin, COL1A1, and FN-EDA protein expression. In addition, pretreatment with the sGC stimulator was capable of significantly dampening TGFβ1-induced acquisition of a contractile phenotype by conjunctival fibroblasts, as well as phosphorylation of Smad3 and release of the proinflammatory cytokines IL-1β and IL-6. Taken together, our findings are the first to demonstrate the effectiveness of pharmacological sGC stimulation in counteracting conjunctival fibroblast-to-myofibroblast transition, thus providing a promising scientific background to further explore the feasibility of sGC stimulators as potential new adjuvant therapeutic compounds to treat conjunctival fibrotic conditions.

摘要

结膜纤维化是一种严重的临床问题,与广泛的眼部疾病有关,包括翼状胬肉和青光眼手术后的结果。它主要由慢性炎症驱动,随着时间的推移,刺激结膜成纤维细胞分化为肌成纤维细胞,导致异常的伤口愈合和瘢痕形成。已经发现可溶性鸟苷酸环化酶(sGC)的刺激可抑制各种基质细胞(如皮肤和肺成纤维细胞以及角膜角膜细胞)中的转化生长因子β(TGFβ)诱导的肌成纤维细胞分化。在这里,我们评估了穿透细胞的吡唑并吡啶并嘧啶化合物 BAY 41-2272 刺激 sGC 酶对调节人结膜成纤维细胞 TGFβ1 介导的促纤维化激活的体外作用。在用重组人 TGFβ1 刺激之前,用 sGC 刺激剂预处理细胞,然后检测细胞活力、增殖、迁移、侵袭、肌成纤维细胞标志物表达和收缩特性。sGC 的刺激显着抵消了 TGFβ1 诱导的细胞增殖、迁移、侵袭和获得肌成纤维细胞样表型,这表现为下调、、、、、、、和 mRNA 水平,以及α-平滑肌肌动蛋白、N-钙黏蛋白、COL1A1 和 FN-EDA 蛋白表达的显著降低。此外,sGC 刺激剂的预处理能够显着抑制 TGFβ1 诱导的结膜成纤维细胞获得收缩表型,以及 Smad3 的磷酸化和促炎细胞因子 IL-1β 和 IL-6 的释放。总之,我们的研究结果首次证明了药理学 sGC 刺激在对抗结膜成纤维细胞向肌成纤维细胞转化方面的有效性,为进一步探索 sGC 刺激剂作为治疗结膜纤维化疾病的潜在新型辅助治疗化合物的可行性提供了有希望的科学背景。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5ca5/10887040/d24376e29904/cells-13-00360-g001.jpg

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