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EMT and pulmonary fibrosis

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https://www.readbyqxmd.com/read/29337256/microrna-regulatory-networks-reflective-of-polyhexamethylene-guanidine-phosphate-induced-fibrosis-in-a549-human-alveolar-adenocarcinoma-cells
#1
Da Young Shin, Mi Ho Jeong, In Jae Bang, Ha Ryong Kim, Kyu Hyuck Chung
Polyhexamethylene guanidine phosphate (PHMG-phosphate), an active component of humidifier disinfectant, is suspected to be a major cause of pulmonary fibrosis. Fibrosis, induced by recurrent epithelial damage, is significantly affected by epigenetic regulation, including microRNAs (miRNAs). The aim of this study was to investigate the fibrogenic mechanisms of PHMG-phosphate through the profiling of miRNAs and their target genes. A549 cells were treated with 0.75 μg/mL PHMG-phosphate for 24 and 48 h and miRNA microarray expression analysis was conducted...
January 11, 2018: Toxicology Letters
https://www.readbyqxmd.com/read/29290631/emodin-attenuates-bleomycin-induced-pulmonary-fibrosis-via-anti-inflammatory-and-anti-oxidative-activities-in-rats
#2
Sheng-Lan Tian, Yang Yang, Xiao-Liu Liu, Qing-Bang Xu
BACKGROUND Idiopathic pulmonary fibrosis (IPF) can severely damage lung function, which may result in death. Emodin is a major ingredient of rhubarb and has been proven to protect against lung disruptions. Our study focused on the potential medicinal effect of emodin against IPF. MATERIAL AND METHODS The experiment subjects were fully-grown male Sprague-Dawley rats with average weight of 180-220 kg. Histological analyses, Western blotting analysis, quantitative real-time PCR, and statistical analysis were used in the study...
January 1, 2018: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/29258746/nlrp3-inflammasome-inhibition-attenuates-silica-induced-epithelial-to-mesenchymal-transition-emt-in-human-bronchial-epithelial-cells
#3
Xiang Li, Xiaopei Yan, Yanli Wang, Jingjing Wang, Fang Zhou, Hong Wang, Weiping Xie, Hui Kong
Silicosis is an incurable and progressive lung disease characterized by chronic inflammation and fibroblasts accumulation. Studies have indicated a vital role for epithelial-mesenchymal transition (EMT) in fibroblasts accumulation. NLRP3 inflammasome is a critical mediator of inflammation in response to a wide range of stimuli (including silica particles), and plays an important role in many respiratory diseases. However, whether NLRP3 inflammasome regulates silica-induced EMT remains unknown. Our results showed that silica induced EMT in human bronchial epithelial cells (16HBE cells) in a dose- and time-dependent manner...
December 16, 2017: Experimental Cell Research
https://www.readbyqxmd.com/read/29207055/therapeutic-effects-of-conditioned-medium-from-bone-marrow-derived-mesenchymal-stem-cells-on-epithelial-mesenchymal-transition-in-a549-cells
#4
Xin Wang, Jun-Ling Gao, Man-Man Zhao, Hui-Xing Zhu, Yan-Xia Tian, Ran Li, Xiao-Hua Jiang, Lei Yu, Jing-Rui Tian, Jian-Zhong Cui
Pulmonary fibrosis (PF) is a chronic lung disease. The transforming growth factor-β1 (TGF-β1)/Smad3 signaling pathway plays an important role in the pathogenesis of pulmonary fibrosis. Bone marrow-derived mesenchymal stem cells (BMSCs) have been shown to be a modulator of the molecular aspects of the fibrosis pathway. However, it is still unknown as to whether the conditioned medium from BMSCs (BMSCs-CM) inhibits the epithelial-mesenchymal transition (EMT) process. This study confirmed the hypothesis that BMSCs-CM exerts an anti-fibrotic effect on human type II alveolar epithelial cells (A549) by suppressing the phosphorylation of Smad3...
November 24, 2017: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/29195901/triptolide-suppresses-paraquat-induced-idiopathic-pulmonary-fibrosis-by-inhibiting-tgfb1-dependent-epithelial-mesenchymal-transition
#5
Hong Chen, Qun Chen, Chun-Ming Jiang, Guang-Yue Shi, Bo-Wen Sui, Wei Zhang, Li-Zhen Yang, Zhu-Ying Li, Li Liu, Yu-Ming Su, Wen-Cheng Zhao, Hong-Qiang Sun, Zhen-Zi Li, Zhou Fu
Idiopathic pulmonary fibrosis (IPF) and tumor are highly similar to abnormal cell proliferation that damages the body. This malignant cell evolution in a stressful environment closely resembles that of epithelial-mesenchymal transition (EMT). As a popular EMT-inducing factor, TGFβ plays an important role in the progression of multiple diseases. However, the drugs that target TGFB1 are limited. In this study, we found that triptolide (TPL), a Chinese medicine extract, exerts an anti-lung fibrosis effect by inhibiting the EMT of lung epithelial cells...
November 28, 2017: Toxicology Letters
https://www.readbyqxmd.com/read/29158503/kr%C3%A3-pple-like-factor-4-attenuates-lung-fibrosis-via-inhibiting-epithelial-mesenchymal-transition
#6
Lianjun Lin, Qian Han, Yan Xiong, Ting Li, Zhonghui Liu, Huiying Xu, Yanping Wu, Nanping Wang, Xinmin Liu
Epithelial-mesenchymal transition (EMT) plays an important role in the pathogenesis of idiopathic pulmonary fibrosis (IPF). Krüpple-like-factor 4 (KLF4), has been suggested to play an important role in the phenotype transition. However, its function in pulmonary fibrosis and EMT of human alveolar epithelial cells (AECs) remains unclear. This study aimed to examine the role of KLF4 in pulmonary fibrosis and EMT. Decreased expression of KLF4 was first observed in human IPF lung tissues and models of bleomycin-induced pulmonary fibrosis...
November 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29118928/mir-5100-targets-tob2-to-drive-epithelial-mesenchymal-transition-associated-with-activating-smad2-3-in-lung-epithelial-cells
#7
Chun-Yan Li, Ya-Hong Wang, Zi-Ying Lin, La-Wei Yang, Sheng-Lan Gao, Tie Liu, Bao-An Zou, Zhan-Chun Pan, Ze-Qing Song, Gang Liu
Idiopathic pulmonary fibrosis (IPF) is a devastating disease and the pathogenesis of IPF remains unclear. Our previous study indicated that miR-5100 promotes the proliferation and metastasis of lung epithelial cells. In this study, we investigated the effect and mechanism of miR-5100 on bleomycin (BLM)-induced mouse lung fibrosis and transforming growth factor β (TGF-β1) or epidermal growth factor (EGF) induced EMT-model in A549 and Beas-2B cells. The elevated level of miR-5100 was observed in both the mouse lung fibrosis tissues and EMT cell model...
2017: American Journal of Translational Research
https://www.readbyqxmd.com/read/29116196/thalidomide-inhibits-tgf-%C3%AE-1-induced-epithelial-to-mesenchymal-transition-in-alveolar-epithelial-cells-via-smad-dependent-and-smad-independent-signaling-pathways
#8
Xian-Long Zhou, Peng Xu, Hai-Hua Chen, Yan Zhao, Jun Shen, Cheng Jiang, Shan Jiang, Shao-Zhou Ni, Bing Xu, Lei Li
Recent evidence indicates that the epithelial to mesenchymal transition (EMT) in primary alveolar cells (AECs) plays an important role in idiopathic pulmonary fibrosis (IPF). In vivo models have suggested that thalidomide (THL) has anti-fibrotic effects against pulmonary fibrosis, but the underlying mechanism of this effect is not clear. This study investigated whether THL regulates alveolar EMT and the possible mechanisms underlying this process. CCL-149 cells were treated with TGF-β1 in the presence of THL at the indicated concentrations...
November 7, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29113749/long-non-coding-rna-atb-promotes-emt-during-silica-induced-pulmonary-fibrosis-by-competitively-binding-mir-200c
#9
Yi Liu, Yan Li, Qi Xu, Wenxi Yao, Qiuyun Wu, Jiali Yuan, Weiwen Yan, Tiantian Xu, Xiaoming Ji, Chunhui Ni
Long non-coding RNAs (lncRNAs) are important signal transduction regulators that act by various patterns. However, little is known about the molecular mechanisms of lncRNA related pathways in occupational lung fibrosis. Our previous study found that epithelial-mesenchymal transition (EMT) was one of the key events in silica-induced pulmonary fibrosis. This study showed that the lncRNA-ATB promoted EMT by acting as a miR-200c sponge. miR-200c was identified by miRNA array as a potential target of lncRNA-ATB and verified by dual luciferase reporter gene together with RNA pull-down assays...
November 4, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/29097327/gallic-acid-attenuates-pulmonary-fibrosis-in-a-mouse-model-of-transverse-aortic-contraction-induced-heart-failure
#10
Li Jin, Zhe Hao Piao, Simei Sun, Bin Liu, Yuhee Ryu, Sin Young Choi, Gwi Ran Kim, Hyung-Seok Kim, Hae Jin Kee, Myung Ho Jeong
Gallic acid, a trihydroxybenzoic acid found in tea and other plants, attenuates cardiac hypertrophy, fibrosis, and hypertension in animal models. However, the role of gallic acid in heart failure remains unknown. In this study, we show that gallic acid administration prevents heart failure-induced pulmonary fibrosis. Heart failure induced in mice, 8weeks after transverse aortic constriction (TAC) surgery, was confirmed by echocardiography. Treatment for 2weeks with gallic acid but not furosemide prevented cardiac dysfunction in mice...
October 30, 2017: Vascular Pharmacology
https://www.readbyqxmd.com/read/29083412/resolvind1-stimulates-epithelial-wound-repair-and-inhibits-tgf-%C3%AE-induced-emt-whilst-reducing-fibroproliferation-and-collagen-production
#11
Shengxing Zheng, Qian Wang, Vijay D'Souza, Dom Bartis, Rachel Dancer, Dhruv Parekh, Fang Gao, Qingquan Lian, Shengwei Jin, David R Thickett
Acute and chronic inflammatory lung diseases are often associated with epithelial cell injury/loss and fibroproliferative responses. ResolvinD1 (RvD1) is biosynthesized during the resolution phase of inflammatory response and exerts potent anti-inflammatory and promotes resolution of inflammatory lung diseases. The aim of this study was to investigate whether RvD1 exerts protective effects on alveolar epithelial cell function/differentiation and protects against fibroproliferative stimuli. Primary human alveolar type II cells were used to model the effects of RvD1 in vitro upon wound repair, proliferation, apoptosis, transdifferentiation, and epithelial-mesenchymal transition (EMT)...
October 30, 2017: Laboratory Investigation; a Journal of Technical Methods and Pathology
https://www.readbyqxmd.com/read/29062612/lncrna-h19-is-involved-in-tgf-%C3%AE-1-induced-epithelial-to-mesenchymal-transition-in-bovine-epithelial-cells-through-pi3k-akt-signaling-pathway
#12
Wei Yang, Xuezhong Li, Shaopei Qi, Xueru Li, Kun Zhou, Suzhu Qing, Yong Zhang, Ming-Qing Gao
Increased levels of long noncoding RNA H19 (H19) have been observed in many inflammatory and organ fibrosis diseases including ulcerative colitis, osteoarthritis, liver fibrosis, renal fibrosis and pulmonary fibrosis. However, the role of H19 in bovine mastitis and mastitis-caused fibrosis is still unclear. In our study, H19 was characterized as a novel regulator of EMT induced by transforming growth factor-β1 (TGF-β1) in bovine mammary alveolar cell-T (MAC-T) cell line. We found that H19 was highly expressed in bovine mastitis tissues and inflammatory MAC-T cells induced by virulence factors of pathogens...
2017: PeerJ
https://www.readbyqxmd.com/read/29050340/nogo-b-promotes-emt-in-lung-fibrosis-via-mmp14-mediates-free-tgf-beta1-formation
#13
Ye Xiong, Jing Zhang, Lingzhi Shi, Yunye Ning, Ying Zhu, Si Chen, Meng Yang, Jingyu Chen, Guo-Wu Zhou, Qiang Li
Idiopathic pulmonary fibrosis (IPF) is a lung disease with an extremely poor prognosis. Epithelial mesenchymal transition (EMT) appearing on the airway epithelial cell plays an essential role in the formation and development of Idiopathic pulmonary fibrosis. In this paper, Bleomycin (BLM)-induced mice model combined with bioinformatics analysis were employed to elucidate the potential mechanism of EMT in pulmonary fibrosis. The obtained results showed that endoplasmic reticulum protein Nogo-b may promote MMP14-mediated proprotein maturation of TGF-β1, accelerating the release of free TGF-β1 in type II airway epithelial cells A549, subsquently, induce the epithelial-mesenchymal transition (EMT) of the cell...
September 19, 2017: Oncotarget
https://www.readbyqxmd.com/read/29046395/epithelial-contribution-to-the-pro-fibrotic-stiff-microenvironment-and-myofibroblast-population-in-lung-fibrosis
#14
Marta Gabasa, Paula Duch, Ignasi Jorba, Alícia Giménez, Roberto Lugo, Irina Pavelescu, Fernando Rodríguez-Pascual, Maria Molina-Molina, Antoni Xaubet, Javier Pereda, Jordi Alcaraz
The contribution of epithelial-to-mesenchymal transition (EMT) to the pro-fibrotic stiff microenvironment and myofibroblast accumulation in pulmonary fibrosis remains unclear. We examined EMT-competent lung epithelial cells and lung fibroblasts from control (fibrosis-free) donors or patients with idiopathic pulmonary fibrosis (IPF), which is a very aggressive fibrotic disorder. Cells were cultured on pro-fibrotic conditions including stiff substrata and TGF-β1, and analyzed in terms of morphology, stiffness and expression of EMT/myofibroblast markers and fibrillar collagens...
October 18, 2017: Molecular Biology of the Cell
https://www.readbyqxmd.com/read/29045477/tubastatin-ameliorates-pulmonary-fibrosis-by-targeting-the-tgf%C3%AE-pi3k-akt-pathway
#15
Shigeki Saito, Yan Zhuang, Bin Shan, Svitlana Danchuk, Fayong Luo, Martina Korfei, Andreas Guenther, Joseph A Lasky
BACKGROUND: Idiopathic pulmonary fibrosis (IPF) is a chronic, progressive and fatal disease. Histone deacetylase 6 (HDAC6) alters function and fate of various proteins via deacetylation of lysine residues, and is implicated in TGF-β1-induced EMT (epithelial-mesenchymal transition). However, the role of HDAC6 in pulmonary fibrosis is unknown. METHODS: HDAC6 expression in IPF and control lungs was assessed by quantitative real-time PCR (qRT-PCR) and immunoblots. Lung fibroblasts were treated with TGF-β1 ± HDAC6 inhibitors (Tubacin, Tubastatin, ACY1215, or MC1568), and fibrotic markers such as type I collagen were assessed using qRT-PCR and immunoblots...
2017: PloS One
https://www.readbyqxmd.com/read/28983614/interaction-network-of-coexpressed-mrna-mirna-and-lncrna-activated-by-tgf%C3%A2-%C3%AE-1-regulates-emt-in-human-pulmonary-epithelial-cell
#16
Huizhu Liu, Xueying Zhao, Jing Xiang, Jie Zhang, Chao Meng, Jinjin Zhang, Minge Li, Xiaodong Song, Changjun Lv
Noncoding RNAs (ncRNAs), such as microRNAs (miRNAs) and long noncoding RNAs (lncRNAs), play increasingly important roles in pathological processes involved in disease development. However, whether mRNAs interact with miRNAs and lncRNAs to form an interacting regulatory network in diseases remains unknown. In this study, the interaction of coexpressed mRNAs, miRNAs and lncRNAs during tumor growth factor‑β1‑activated (TGF‑β1) epithelial‑mesenchymal transition (EMT) was systematically analyzed in human alveolar epithelial cells...
December 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28938915/bdnf-trkb-axis-activation-promotes-epithelial-mesenchymal-transition-in-idiopathic-pulmonary-fibrosis
#17
Emanuela Cherubini, Salvatore Mariotta, Davide Scozzi, Rita Mancini, Giorgia Osman, Michela D'Ascanio, Pierdonato Bruno, Giuseppe Cardillo, Alberto Ricci
BACKGROUND: Neurotrophins (NT) belongs to a family of growth factors which promotes neurons survival and differentiation. Increasing evidence show that NT and their receptor are expressed in lung tissues suggesting a possible role in lung health and disease. Here we investigated the expression and functional role of the TrkB/BDNF axis in idiopathic pulmonary fibrotic lung (myo)fibroblasts. METHODS: Lung fibroblast were isolated from IPF patients and characterized for the expression of mesenchymal markers in comparison to normal lung fibroblasts isolated from non-IPF controls...
September 22, 2017: Journal of Translational Medicine
https://www.readbyqxmd.com/read/28931214/baicalin-alleviates-radiation-induced-epithelial-mesenchymal-transition-of-primary-type-ii-alveolar-epithelial-cells-via-tgf-%C3%AE-and-erk-gsk3%C3%AE-signaling-pathways
#18
Jinhua Lu, Yazhen Zhong, Zechen Lin, Xianlei Lin, Zhaohui Chen, Xuping Wu, Nan Wang, Haiqiao Zhang, Siyu Huang, Yuan Zhu, Yuanyuan Wang, Shengyou Lin
BACKGROUND: Radiation therapy is commonly used to treat thoracic malignancies. However, it may lead to severe lung pneumonitis and ultimately fibrosis. Irradiation has been reported to increase epithelial-mesenchymal transition (EMT) of type II alveolar epithelial cells (AEC), which play an important role in pulmonary fibrosis. The transforming growth factor-β (TGF-β) and ERK/glycogen synthase kinase 3β (GSK3β) pathways are critically involved in radiation-induced EMT. In the present study, we investigated whether baicalin was a novel therapeutic candidate for radiation-induced EMT in type II AEC...
November 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28900284/mir-503-modulates-epithelial-mesenchymal-transition-in-silica-induced-pulmonary-fibrosis-by-targeting-pi3k-p85-and-is-sponged-by-lncrna-malat1
#19
Weiwen Yan, Qiuyun Wu, Wenxi Yao, Yan Li, Yi Liu, Jiali Yuan, Ruhui Han, Jingjin Yang, Xiaoming Ji, Chunhui Ni
Silicosis is a kind of chronic, progressive and incurable lung fibrotic diseases with largely unknown and complex pathogenesis and molecular mechanisms. Mounting evidence suggests that microRNAs (miRNAs, miRs) are involved in the pathogenesis of silicosis. Our previous study based on miRNA microarray had shown that the expression levels of miR-503 were down-regulated in mouse lung tissues of silica-induced pulmonary fibrosis. Here, we validated the decreased expression of miR-503 in the fibrotic mouse lung tissues, human bronchial epithelial cells (HBE) and human lung adenocarcinoma A549 cells which were exposed to silica...
September 12, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28891150/endothelial-to-mesenchymal-transition-in-cardiovascular-diseases-developmental-signalling-pathways-gone-awry
#20
REVIEW
Gonzalo Sánchez-Duffhues, Amaya García de Vinuesa, Peter Ten Dijke
The process named endothelial-to-mesenchymal transition (EndMT) was observed for the first time during the development of the chicken embryo several decades ago. Interestingly, accumulating evidence suggests that EndMT plays a critical role in the onset and progression of a multiple postnatal cardiovascular diseases. EndMT is controlled by a set of developmental signalling pathways, very similar to the process of epithelial-to-mesenchymal transition (EMT), which determine the activity of a number of EndMT transcriptional effectors...
September 11, 2017: Developmental Dynamics: An Official Publication of the American Association of Anatomists
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