Protein Information

Name Smad (protein family or complex)
Synonyms SMAD; SMAD, mothers against DPP homolog; SMAD, mothers against DPP homologs; Smad

Compound Information

Name carbon tetrachloride
CAS tetrachloromethane

Reference List

PubMed Abstract RScore(About this table)
16012952 Inagaki Y, Kushida M, Higashi K, Itoh J, Higashiyama R, Hong YY, Kawada N, Namikawa K, Kiyama H, Bou-Gharios G, Watanabe T, Okazaki I, Ikeda K: Cell type-specific intervention of transforming growth factor beta/Smad signaling suppresses collagen gene expression and hepatic fibrosis in mice. Gastroenterology. 2005 Jul;129(1):259-68.

METHODS: Recombinant adenoviruses expressing either green fluorescent protein or a transforming growth factor beta/Smad signal repressor, YB-1, were injected into mice untreated or treated with carbon tetrachloride.
10(0,0,1,5) Details
15818738 Song SL, Gong ZJ, Zhang QR, Huang TX: Effects of Chinese traditional compound, JinSanE, on expression of TGF-beta1 and TGF-beta1 type II receptor mRNA, Smad3 and Smad7 on experimental hepatic fibrosis in vivo. World J Gastroenterol. 2005 Apr 21;11(15):2269-76.

In this study, the therapeutic effects of Chinese traditional compound decoction, JinSanE, and the changes of TGF-beta/Smad signaling pathway system in carbon tetrachloride (CCl (4))-induced rat experimental liver fibrosis were examined.
8(0,0,1,3) Details
18395914 Wu XL, Zeng WZ, Jiang MD, Qin JP, Xu H: Effect of Oxymatrine on the TGFbeta-Smad signaling pathway in rats with CCl4-induced hepatic fibrosis. World J Gastroenterol. 2008 Apr 7;14(13):2100-5.

Experimental hepatic fibrosis was induced by subcutaneous injection of carbon tetrachloride (CCl4 soluted in liquid paraffin with the concentration of 300 g/L, the dosage of injection was 3 mL/kg, twice per week for 8 wk).
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19488034 Ma X, Xu L, Wang S, Chen H, Xu J, Li X, Ning G: Loss of steroid receptor co-activator-3 attenuates carbon tetrachloride-induced murine hepatic injury and fibrosis. Lab Invest. 2009 Aug;89(8):903-14. Epub 2009 Jun 1.

Further investigation revealed that TGFbeta1/Smad signaling pathway was impaired in the absence of SRC-3.
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18712785 Nitta T, Kim JS, Mohuczy D, Behrns KE: Murine cirrhosis induces hepatocyte epithelial mesenchymal transition and alterations in survival signaling pathways. Hepatology. 2008 Sep;48(3):909-19.

Here, chronic murine liver injury was induced by twice-weekly carbon tetrachloride administration for 8 weeks.
Normal liver-derived hepatocytes (NLDH) and cirrhotic liver-derived hepatocytes (CLDH) were examined for EMT and the small mothers against decapentaplegic homolog (Smad), phosphatidylinositol-3-kinase (PI3K/Akt), and mitogen activated protein kinase (MAPK) pathways were investigated.
2(0,0,0,2) Details
18502066 Yang Y, Yang S, Chen M, Zhang X, Zou Y, Zhang X: Compound Astragalus and Salvia miltiorrhiza Extract exerts anti-fibrosis by mediating TGF-beta/Smad signaling in myofibroblasts. J Ethnopharmacol. 2008 Jul 23;118(2):264-70. Epub 2008 Apr 18.

To test this hypothesis, we induced fibrosis in rats by twice weekly injections of carbon tetrachloride (CCl (4)) and Smad2 phosphorylation was measured by immunohistochemical method; protein expression in myofibroblasts (MFBs) induced by TGF-beta1 was analyzed by western blotting and plasminogen activator inhibitor type 1 (PAI-1) transcriptional activity in MFBs was evaluated.
2(0,0,0,2) Details
20333785 Yang FR, Fang BW, Lou JS: Effects of Haobie Yangyin Ruanjian Decoction on hepatic fibrosis induced by carbon tetrachloride in rats. World J Gastroenterol. 2010 Mar 28;16(12):1458-64.

AIM: To explore the anti-fibrotic effect of Haobie Yangyin Ruanjian Decoction (HYRD) on CCl (4)-induced hepatic fibrosis in rats and its modulation on the transforming growth factor (TGF) beta-Smad signaling pathway.
2(0,0,0,2) Details
18308447 Park JK, Jeong DH, Park HY, Son KH, Shin DH, Do SH, Yang HJ, Yuan DW, Hong IH, Goo MJ, Lee HR, Ki MR, Ishigami A, Jeong KS: Hepatoprotective effect of Arazyme on CCl4-induced acute hepatic injury in SMP30 knock-out mice. Toxicology. 2008 Apr 18;246(2-3):132-42. Epub 2008 Jan 19.

This study focused on the hepatoprotective effect of Arazyme on carbon tetrachloride (CCl4)-induced acute hepatic injury in senescence marker protein 30 (SMP30) knock-out (KO) mice and SMP30 wild-type (WT) mice.
Therefore, it is concluded that Arazyme plays a significant role in protecting injured hepatocytes by increasing the expression of SMP30, inhibiting the transforming growth factor-beta (TGF-beta)/Smad pathway and elevating the expression of antioxidant proteins.
1(0,0,0,1) Details
18771671 Moro T, Shimoyama Y, Kushida M, Hong YY, Nakao S, Higashiyama R, Sugioka Y, Inoue H, Okazaki I, Inagaki Y: Glycyrrhizin and its metabolite inhibit Smad3-mediated type I collagen gene transcription and suppress experimental murine liver fibrosis. Life Sci. 2008 Oct 10;83(15-16):531-9. Epub 2008 Aug 16.

Their effects on the TGF-beta/Smad signaling pathway were studied by cell transfection assays and immunofluorescence studies using cultured hepatic stellate cells.
KEY FINDINGS: Administration of glycyrrhizin or its metabolite, glycyrrhetinic acid, significantly suppressed COL1A2 promoter activation and progression of liver fibrosis induced by repeated carbon tetrachloride injections.
1(0,0,0,1) Details
16382155 Ju W, Ogawa A, Heyer J, Nierhof D, Yu L, Kucherlapati R, Shafritz DA, Bottinger EP: Deletion of Smad2 in mouse liver reveals novel functions in hepatocyte growth and differentiation. Mol Cell Biol. 2006 Jan;26(2):654-67.


Smad family proteins Smad2 and Smad3 are activated by transforming growth factor beta (TGF-beta)/activin/nodal receptors and mediate transcriptional regulation.
1(0,0,0,1) Details
15154911 Flanders KC: Smad3 as a mediator of the fibrotic response. Int J Exp Pathol. 2004 Apr;85(2):47-64.

TGF-beta signals through transmembrane receptor serine/threonine kinases to activate novel signalling intermediates called Smad proteins, which modulate the transcription of target genes.
Smad3 null mice are resistant to radiation-induced cutaneous fibrosis, bleomycin-induced pulmonary fibrosis, carbon tetrachloride-induced hepatic fibrosis as well as glomerular fibrosis induced by induction of type 1 diabetes with streptozotocin.
1(0,0,0,1) Details
18753413 Khimji AK, Shao R, Rockey DC: Divergent transforming growth factor-beta signaling in hepatic stellate cells after liver injury: functional effects on ECE-1 regulation. Am J Pathol. 2008 Sep;173(3):716-27.


We measured Smad3 and MAP kinase activation after isolating stellate cells from rat livers injured by either bile duct ligation (BDL) or repeated carbon tetrachloride (CCl (4)) administration.
0(0,0,0,0) Details
18266971 Hamzavi J, Ehnert S, Godoy P, Ciuclan L, Weng H, Mertens PR, Heuchel R, Dooley S: Disruption of the Smad7 gene enhances CCI4-dependent liver damage and fibrogenesis in mice. J Cell Mol Med. 2008 Oct;12(5B):2130-44. Epub 2008 Feb 4.


To obtain insight into Smad7-depend-ent protective effects, chronic liver damage was induced in mice by carbon tetrachloride (CCI4) administration.
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