Human umbilical cord mesenchymal stem cells inhibit proliferation of hepatic stellate cells in vitro. 2018

Li-Ting Zhang, and Xue-Bin Peng, and Xue-Qin Fang, and Jun-Feng Li, and Hong Chen, and Xiao-Rong Mao
Department of Infectious Diseases, The First Hospital of Lanzhou University, Lanzhou, Gansu 730000, P.R. China.

The effect of human umbilical cord mesenchymal stem cells (hUC-MSCs) on the proliferation of hepatic stellate cells (HSCs) is largely unknown. The purpose of this study was to explore the mechanism of action of hUC‑MSCs on the proliferation of HSCs in vitro. The upper and lower double-cell co-culture system was established between hUC‑MSCs and HSCs in the experimental group. HSCs were cultured alone as a negative control group. Cell proliferation and apoptosis were determined by 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay and flow cytometry, respectively. Cell supernatants were harvested to determine the concentration of transforming growth factor-β1 (TGF-β1) by ELISA. mRNA and protein of TGF-β1, Smad3 and Smad7 in HSCs were determined by reverse transcription-polymerase chain reaction and western blotting, respectively. In the co-culture group, the proliferation of HSCs was significantly inhibited compared with the negative control group at 24 and 48 h (p<0.05). Apoptosis of HSCs in the co-culture group increased compared with that in the negative control group, which was more obvious at 48 h (p<0.05). The concentration of TGF-β1 in the co-culture group was significantly lower than in the HSCs cultured alone (p<0.05). After HSCs were co-cultured with hUC‑MSCs for 48 h, expression of TGF-β1 and Smad3 mRNA and protein was reduced and expression of Smad7 mRNA and protein was increased compared with the negative control group (p<0.05). hUC‑MSCs inhibited proliferation of HSCs, possibly through inhibiting TGF-β1 and Smad3 expression and increasing Smad7 protein expression.

UI MeSH Term Description Entries
D002460 Cell Line Established cell cultures that have the potential to propagate indefinitely. Cell Lines,Line, Cell,Lines, Cell
D005786 Gene Expression Regulation Any of the processes by which nuclear, cytoplasmic, or intercellular factors influence the differential control (induction or repression) of gene action at the level of transcription or translation. Gene Action Regulation,Regulation of Gene Expression,Expression Regulation, Gene,Regulation, Gene Action,Regulation, Gene Expression
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D014470 Umbilical Cord The flexible rope-like structure that connects a developing FETUS to the PLACENTA in mammals. The cord contains blood vessels which carry oxygen and nutrients from the mother to the fetus and waste products away from the fetus. Cord, Umbilical,Cords, Umbilical,Umbilical Cords
D017209 Apoptosis A regulated cell death mechanism characterized by distinctive morphologic changes in the nucleus and cytoplasm, including the endonucleolytic cleavage of genomic DNA, at regularly spaced, internucleosomal sites, i.e., DNA FRAGMENTATION. It is genetically programmed and serves as a balance to mitosis in regulating the size of animal tissues and in mediating pathologic processes associated with tumor growth. Apoptosis, Extrinsic Pathway,Apoptosis, Intrinsic Pathway,Caspase-Dependent Apoptosis,Classic Apoptosis,Classical Apoptosis,Programmed Cell Death,Programmed Cell Death, Type I,Apoptoses, Extrinsic Pathway,Apoptoses, Intrinsic Pathway,Apoptosis, Caspase-Dependent,Apoptosis, Classic,Apoptosis, Classical,Caspase Dependent Apoptosis,Cell Death, Programmed,Classic Apoptoses,Extrinsic Pathway Apoptoses,Extrinsic Pathway Apoptosis,Intrinsic Pathway Apoptoses,Intrinsic Pathway Apoptosis
D049109 Cell Proliferation All of the processes involved in increasing CELL NUMBER including CELL DIVISION. Cell Growth in Number,Cellular Proliferation,Cell Multiplication,Cell Number Growth,Growth, Cell Number,Multiplication, Cell,Number Growth, Cell,Proliferation, Cell,Proliferation, Cellular
D051900 Smad3 Protein A receptor-regulated smad protein that undergoes PHOSPHORYLATION by ACTIVIN RECEPTORS, TYPE I. Activated Smad3 can bind directly to DNA, and it regulates TRANSFORMING GROWTH FACTOR BETA and ACTIVIN signaling. Madh3 Protein
D051906 Smad7 Protein An inhibitory smad protein that associates with TRANSFORMING GROWTH FACTOR BETA RECEPTORS and BONE MORPHOGENETIC PROTEIN RECEPTORS. It negatively regulates SIGNAL TRANSDUCTION PATHWAYS by inhibiting PHOSPHORYLATION of RECEPTOR-REGULATED SMAD PROTEINS. Madh7 Protein
D053773 Transforming Growth Factor beta1 A subtype of transforming growth factor beta that is synthesized by a wide variety of cells. It is synthesized as a precursor molecule that is cleaved to form mature TGF-beta 1 and TGF-beta1 latency-associated peptide. The association of the cleavage products results in the formation a latent protein which must be activated to bind its receptor. Defects in the gene that encodes TGF-beta1 are the cause of CAMURATI-ENGELMANN SYNDROME. TGF-beta1,Transforming Growth Factor-beta1,TGF-beta-1,TGF-beta1 Latency-Associated Protein,TGF-beta1LAP,Transforming Growth Factor beta 1 Latency Associated Peptide,Transforming Growth Factor beta I,Latency-Associated Protein, TGF-beta1,TGF beta 1,TGF beta1 Latency Associated Protein,TGF beta1LAP
D055166 Hepatic Stellate Cells Perisinusoidal cells of the liver, located in the space of Disse between HEPATOCYTES and sinusoidal endothelial cells. Ito Cells,Cell, Hepatic Stellate,Cells, Hepatic Stellate,Cells, Ito,Hepatic Stellate Cell,Stellate Cell, Hepatic,Stellate Cells, Hepatic

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