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Decorin counteracts disease progression in mice with recessive dystrophic epidermolysis bullosa.
Matrix Biology ( IF 4.5 ) Pub Date : 2018-12-05 , DOI: 10.1016/j.matbio.2018.12.001
Francesca Cianfarani 1 , Emanuela De Domenico 1 , Alexander Nyström 2 , Simona Mastroeni 3 , Damiano Abeni 3 , Enke Baldini 4 , Salvatore Ulisse 4 , Paolo Uva 5 , Leena Bruckner-Tuderman 2 , Giovanna Zambruno 6 , Daniele Castiglia 1 , Teresa Odorisio 1
Affiliation  

Loss-of-function mutations in the gene encoding type VII collagen underlie recessive dystrophic epidermolysis bullosa (RDEB), a disease characterized by skin and mucosal blistering, impaired wound healing, and diffuse dermal inflammation and fibrosis. Transforming growth factor-β signaling plays a crucial role in determining RDEB fibrotic microenvironment that leads to the development of disabling secondary disease manifestations, including hand and foot deformities. Experimental findings indicate that expression levels of decorin, a small leucine-rich proteoglycan and an endogenous TGF-β inhibitor, can modulate RDEB disease phenotype by contrasting dermal fibroblast fibrotic behavior. In this study, the ability of decorin to modify RDEB course was investigated by systemically treating RDEB mice with a lentivirus expressing human decorin. Overexpressed decorin was able to enhance survival, and to limit digit contraction and the development of paw deformities. These effects were associated with decreased TGF-β1 levels and TGF-β signaling activation. Fibrotic traits were strongly reduced in paw skin and also attenuated in the non-chronically injured back skin. However, the expression of pro-inflammatory proteins was not decreased in both paw and back skin. Our findings confirm TGF-β role in promoting fibrosis and disease progression in RDEB, and show that decorin counteracts disease manifestations by inhibiting TGF-β activation. More generally, our data indicate that modifying extracellular matrix composition is an option to improve RDEB disease course.

中文翻译:

Decorin抵消了隐性营养不良性大疱性表皮松解症小鼠的疾病进展。

隐性营养不良性表皮松解性大疱病(RDEB)是VII型胶原蛋白编码基因的功能丧失突变,这种疾病的特征是皮肤和粘膜起泡,伤口愈合受损以及皮肤发炎和纤维化扩散。转化生长因子-β信号转导在确定RDEB纤维化微环境中起关键作用,该环境导致残疾继发性疾病表现的发展,包括手足畸形。实验结果表明,decorin(一种富含亮氨酸的小蛋白聚糖和一种内源性TGF-β抑制剂)的表达水平可以通过对比皮肤成纤维细胞的纤维化行为来调节RDEB疾病表型。在这项研究中,通过用表达人类核心蛋白的慢病毒全身性处理RDEB小鼠,研究了核心蛋白聚糖修饰RDEB过程的能力。过表达的decorin能够提高存活率,并限制手指收缩和爪畸形的发展。这些作用与降低的TGF-β1水平和TGF-β信号激活有关。爪状皮肤的纤维化性状显着降低,而非慢性损伤的背部皮肤的纤维化性状也减弱。然而,在爪子和背部皮肤中促炎蛋白的表达均未降低。我们的发现证实了TGF-β在促进RDEB中的纤维化和疾病进展中的作用,并显示了得体蛋白通过抑制TGF-β的活化来抵消疾病的表现。更一般而言,我们的数据表明,改变细胞外基质组成是改善RDEB病程的一种选择。这些作用与降低的TGF-β1水平和TGF-β信号激活有关。爪状皮肤的纤维化性状显着降低,而非慢性损伤的背部皮肤的纤维化性状也减弱。然而,在爪子和背部皮肤中促炎蛋白的表达均未降低。我们的发现证实了TGF-β在促进RDEB中的纤维化和疾病进展中的作用,并显示了得体蛋白通过抑制TGF-β的活化来抵消疾病的表现。更一般而言,我们的数据表明,改变细胞外基质组成是改善RDEB病程的一种选择。这些作用与降低的TGF-β1水平和TGF-β信号激活有关。爪状皮肤的纤维化性状显着降低,而非慢性损伤的背部皮肤的纤维化性状也减弱。然而,在爪子和背部皮肤中促炎蛋白的表达均未降低。我们的发现证实了TGF-β在促进RDEB中的纤维化和疾病进展中的作用,并显示了得体蛋白通过抑制TGF-β的活化来抵消疾病的表现。更一般而言,我们的数据表明,改变细胞外基质组成是改善RDEB病程的一种选择。爪和背部皮肤中促炎蛋白的表达均未降低。我们的发现证实了TGF-β在促进RDEB中的纤维化和疾病进展中的作用,并显示了得体蛋白通过抑制TGF-β的活化来抵消疾病的表现。更一般而言,我们的数据表明,改变细胞外基质组成是改善RDEB病程的一种选择。爪和背部皮肤中促炎蛋白的表达均未降低。我们的发现证实了TGF-β在促进RDEB中的纤维化和疾病进展中的作用,并显示了得体蛋白通过抑制TGF-β的活化来抵消疾病的表现。更一般而言,我们的数据表明,改变细胞外基质组成是改善RDEB病程的一种选择。
更新日期:2019-07-05
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