Mesenchymal stem cell-based Smad7 gene therapy for experimental liver cirrhosis

Su，Dong Na1; Wu，Shi Pin1; Xu，Shang Zhong2

2020-09-14

10.1186/s13287-020-01911-4

Stem Cell Research & Therapy   影响因子和分区

1757-6512

1757-6512

Background: Bone mesenchymal stem cells (MSCs) can promote liver regeneration and inhibit inflammation and hepatic fibrosis. MSCs also can serve as a vehicle for gene therapy. Smad7 is an essential negative regulatory gene in the TGF-β1/Smad signalling pathway. Activation of TGF-β1/Smad signalling accelerates liver inflammation and fibrosis; we therefore hypothesized that MSCs overexpressing the Smad7 gene might be a new cell therapy approach for treating liver fibrosis via the inhibition of TGF-β1/Smad signalling. Methods: MSCs were isolated from 6-week-old Wistar rats and transduced with the Smad7 gene using a lentivirus vector. Liver cirrhosis was induced by subcutaneous injection of carbon tetrachloride (CCl4) for 8 weeks. The rats with established liver cirrhosis were treated with Smad7-MSCs by direct injection of cells into the main lobes of the liver. The expression of Smad7, Smad2/3 and fibrosis biomarkers or extracellular matrix proteins and histopathological change were assessed by quantitative PCR, ELISA and Western blotting and staining. Results: The mRNA and protein level of Smad7 in the recipient liver and serum were increased after treating with Smad-MSCs for 7 and 21 days (P < 0.001). The serum levels of collagen I and III and collagenase I and III were significantly (P < 0.001) reduced after the treatment with Smad7-MSCs. The mRNA levels of TGF-β1, TGFBR1, α-SMA, TIMP-1, laminin and hyaluronic acid were decreased (P < 0.001), while MMP-1 increased (P < 0.001). The liver fibrosis score and liver function were significantly alleviated after the cell therapy. Conclusions: The findings suggest that the MSC therapy with Smad7-MSCs is effective in the treatment of liver fibrosis in the CCl4-induced liver cirrhosis model. Inhibition of TGF-β1 signalling pathway by enhancement of Smad-7 expression could be a feasible cell therapy approach to mitigate liver cirrhosis.

Fibrosis Gene therapy Liver cirrhosis Mesenchymal stem cells Smad7 TGF-β

SCI

英语

第一

Cell Biology ; Research & Experimental Medicine

Cell & Tissue Engineering ; Cell Biology ; Medicine, Research & Experimental

WOS:000573614500002

BMC

2-s2.0-85091051992

Scopus

1.Department of Infectious Diseases,Shenzhen People's Hospital,Second Clinical Medical College,Jinan University,First Affiliated Hospital,Southern University of Science and Technology,Shenzhen, Guangdong Province,1017 Dong Men Bei Road, Luo Hu District,518020,China
2.Centre for Atherothrombosis and Metabolic Disease,Hull York Medical School,University of Hull,Hull,HU6 7RX,United Kingdom

Su，Dong Na,Wu，Shi Pin,Xu，Shang Zhong. Mesenchymal stem cell-based Smad7 gene therapy for experimental liver cirrhosis[J]. Stem Cell Research &amp; Therapy,2020,11(1).

Su，Dong Na,Wu，Shi Pin,&Xu，Shang Zhong.(2020).Mesenchymal stem cell-based Smad7 gene therapy for experimental liver cirrhosis.Stem Cell Research & Therapy,11(1).

Su，Dong Na,et al."Mesenchymal stem cell-based Smad7 gene therapy for experimental liver cirrhosis".Stem Cell Research & Therapy 11.1(2020).