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TGF-β1/Smad3 Signaling Pathway Mediates T-2 Toxin-Induced Decrease of Type II Collagen in Cultured Rat Chondrocytes

T-2 toxin can cause damage to the articular cartilage, but the molecular mechanism remains unclear. By employing the culture of rat chondrocytes, we investigated the effect of the TGF-β1/Smad3 signaling pathway on the damage to chondrocytes induced by T-2 toxin. It was found that T-2 toxin could red...

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Autores principales: Li, Yang, Zou, Ning, Wang, Jing, Wang, Ke-Wei, Li, Fu-Yuan, Chen, Fu-Xun, Sun, Bing-Yu, Sun, Dian-Jun
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2017
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5705974/
https://www.ncbi.nlm.nih.gov/pubmed/29113082
http://dx.doi.org/10.3390/toxins9110359
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author Li, Yang
Zou, Ning
Wang, Jing
Wang, Ke-Wei
Li, Fu-Yuan
Chen, Fu-Xun
Sun, Bing-Yu
Sun, Dian-Jun
author_facet Li, Yang
Zou, Ning
Wang, Jing
Wang, Ke-Wei
Li, Fu-Yuan
Chen, Fu-Xun
Sun, Bing-Yu
Sun, Dian-Jun
author_sort Li, Yang
collection PubMed
description T-2 toxin can cause damage to the articular cartilage, but the molecular mechanism remains unclear. By employing the culture of rat chondrocytes, we investigated the effect of the TGF-β1/Smad3 signaling pathway on the damage to chondrocytes induced by T-2 toxin. It was found that T-2 toxin could reduce cell viability and increased the number of apoptotic cells when compared with the control group. After the addition of the T-2 toxin, the production of type II collagen was reduced at mRNA and protein levels, while the levels of TGF-β1, Smad3, ALK5, and MMP13 were upregulated. The production of the P-Smad3 protein was also increased. Inhibitors of TGF-β1 and Smad3 were able to reverse the effect of the T-2 toxin on the protein level of above-mentioned signaling molecules. The T-2 toxin could promote the level of MMP13 via the stimulation of TGF-β1 signaling in chondrocytes, resulting in the downregulation of type II collagen and chondrocyte damage. Smad3 may be involved in the degradation of type II collagen, but the Smad3 has no connection with the regulation of MMP13 level. This study provides a new clue to elucidate the mechanism of T-2 toxin-induced chondrocyte damage.
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spelling pubmed-57059742017-12-04 TGF-β1/Smad3 Signaling Pathway Mediates T-2 Toxin-Induced Decrease of Type II Collagen in Cultured Rat Chondrocytes Li, Yang Zou, Ning Wang, Jing Wang, Ke-Wei Li, Fu-Yuan Chen, Fu-Xun Sun, Bing-Yu Sun, Dian-Jun Toxins (Basel) Article T-2 toxin can cause damage to the articular cartilage, but the molecular mechanism remains unclear. By employing the culture of rat chondrocytes, we investigated the effect of the TGF-β1/Smad3 signaling pathway on the damage to chondrocytes induced by T-2 toxin. It was found that T-2 toxin could reduce cell viability and increased the number of apoptotic cells when compared with the control group. After the addition of the T-2 toxin, the production of type II collagen was reduced at mRNA and protein levels, while the levels of TGF-β1, Smad3, ALK5, and MMP13 were upregulated. The production of the P-Smad3 protein was also increased. Inhibitors of TGF-β1 and Smad3 were able to reverse the effect of the T-2 toxin on the protein level of above-mentioned signaling molecules. The T-2 toxin could promote the level of MMP13 via the stimulation of TGF-β1 signaling in chondrocytes, resulting in the downregulation of type II collagen and chondrocyte damage. Smad3 may be involved in the degradation of type II collagen, but the Smad3 has no connection with the regulation of MMP13 level. This study provides a new clue to elucidate the mechanism of T-2 toxin-induced chondrocyte damage. MDPI 2017-11-05 /pmc/articles/PMC5705974/ /pubmed/29113082 http://dx.doi.org/10.3390/toxins9110359 Text en © 2017 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Li, Yang
Zou, Ning
Wang, Jing
Wang, Ke-Wei
Li, Fu-Yuan
Chen, Fu-Xun
Sun, Bing-Yu
Sun, Dian-Jun
TGF-β1/Smad3 Signaling Pathway Mediates T-2 Toxin-Induced Decrease of Type II Collagen in Cultured Rat Chondrocytes
title TGF-β1/Smad3 Signaling Pathway Mediates T-2 Toxin-Induced Decrease of Type II Collagen in Cultured Rat Chondrocytes
title_full TGF-β1/Smad3 Signaling Pathway Mediates T-2 Toxin-Induced Decrease of Type II Collagen in Cultured Rat Chondrocytes
title_fullStr TGF-β1/Smad3 Signaling Pathway Mediates T-2 Toxin-Induced Decrease of Type II Collagen in Cultured Rat Chondrocytes
title_full_unstemmed TGF-β1/Smad3 Signaling Pathway Mediates T-2 Toxin-Induced Decrease of Type II Collagen in Cultured Rat Chondrocytes
title_short TGF-β1/Smad3 Signaling Pathway Mediates T-2 Toxin-Induced Decrease of Type II Collagen in Cultured Rat Chondrocytes
title_sort tgf-β1/smad3 signaling pathway mediates t-2 toxin-induced decrease of type ii collagen in cultured rat chondrocytes
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5705974/
https://www.ncbi.nlm.nih.gov/pubmed/29113082
http://dx.doi.org/10.3390/toxins9110359
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