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EMT and pulmonary fibrosis

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https://www.readbyqxmd.com/read/29118928/mir-5100-targets-tob2-to-drive-epithelial-mesenchymal-transition-associated-with-activating-smad2-3-in-lung-epithelial-cells
#1
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
#2
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
#3
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
#4
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
#5
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
#6
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
#7
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
#8
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
#9
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
#10
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
#11
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
#12
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
#13
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
#14
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
https://www.readbyqxmd.com/read/28878195/1-945-25-dihydroxyvitamin-d3-attenuates-tgf-946-induced-pro-fibrotic-effects-in-human-lung-epithelial-cells-through-inhibition-of-epithelial-mesenchymal-transition
#15
Fei Jiang, Yong Yang, Lian Xue, Bingyan Li, Zengli Zhang
Pulmonary fibrosis is a progressive fibrotic lung disease of persisting lung injury and ineffective wound repair, with poor prognosis. Epithelial-mesenchymal transition (EMT) of alveolar epithelia cells is an early event in the development of pulmonary fibrosis, and transforming growth factor β (TGF-β) is an acknowledged inducer of EMT. Epidemiological studies demonstrated that serum levels of 25-hydroxy-vitamin D were associated with the presence of fibrosis diseases. We investigated whether vitamin D attenuated TGF-β-induced pro-fibrotic effects through inhibiting EMT in human alveolar epithelia A549 cells...
September 6, 2017: Nutrients
https://www.readbyqxmd.com/read/28873461/interleukin-17-induces-human-alveolar-epithelial-to-mesenchymal-cell-transition-via-the-tgf-%C3%AE-1-mediated-smad2-3-and-erk1-2-activation
#16
Ting Wang, Yuan Liu, Jing-Feng Zou, Zhen-Shun Cheng
Idiopathic pulmonary fibrosis (IPF) is a chronic and usually progressive lung disease and the epithelial-mesenchymal transition (EMT) may play an important role in the pathogenesis of pulmonary fibrosis. IL-17 is a proinflammatory cytokine which promotes EMT profiles in lung inflammatory diseases. In this study, we investigated the effect of IL-17 on EMT in alveolar epithelial cell line A549 and the role of TGFβ1-Smad and ERK signaling pathways in the process. Morphological observation on the cells was performed under inverted microscope...
2017: PloS One
https://www.readbyqxmd.com/read/28820530/cxcr7-attenuates-the-tgf-%C3%AE-induced-endothelial-to-mesenchymal-transition-and-pulmonary-fibrosis
#17
Shuhong Guan, Jun Zhou
Lung fibrosis is a progressive and often fatal lung disease characterized by fibroblast proliferation and excessive deposition of extracellular matrix in the lungs. The chemokine receptor CXCR7 has been shown to control cell adhesion, migration and proliferation by regulating the epithelial-to-mesenchymal transition (EMT), but the role of CXCR7 in regulating the endothelial-to-mesenchymal transition (EndMT) and lung fibrosis remains largely unclear. In this study, we investigated the interrelation of CXCR7 and TGF-β, a crucial player in lung fibrogenesis...
September 26, 2017: Molecular BioSystems
https://www.readbyqxmd.com/read/28816009/protective-effect-of-atazanavir-sulfate-against-pulmonary-fibrosis-in-vivo-and-in-vitro
#18
Shina Song, Yunxia Ji, Guanghua Zhang, Xue Zhang, Bin Li, Defang Li, Wanglin Jiang
Atazanavir sulfate, an antiretroviral protease inhibitor, has been used to treat HIV/AIDS, but its ability to serve as an anti-pulmonary fibrosis (PF) agent remains unknown. In this study, the effects of atazanavir sulfate on various aspects of PF were examined and CoCl2 was used to induce the hypoxia-mimicking condition in vitro, including epithelial-mesenchymal transition (EMT) in A549 cells, endothelial-mesenchymal transition (EndMT) in human pulmonary microvascular endothelial cells (HPMECs), proliferation in human lung fibroblasts (HLF-1) and potential protective effects in human type I alveolar epithelial cells (AT I)...
August 16, 2017: Basic & Clinical Pharmacology & Toxicology
https://www.readbyqxmd.com/read/28771711/tannic-acid-attenuates-tgf-%C3%AE-1-induced-epithelial-to-mesenchymal-transition-by-effectively-intervening-tgf-%C3%AE-signaling-in-lung-epithelial-cells
#19
Dhamotharan Pattarayan, Ayyanar Sivanantham, Venkateshwaran Krishnaswami, Lakshmanan Loganathan, Rajaguru Palanichamy, Subramanian Natesan, Karthikeyan Muthusamy, Subbiah Rajasekaran
Idiopathic pulmonary fibrosis (IPF) is a chronic, progressive and an irreversible lung disorder characterized by the accumulation of fibroblasts and myofibroblasts in the extracellular matrix. The transforming growth factor-β1 (TGF-β1)-induced epithelial-to-mesenchymal transition (EMT) is thought to be one of the possible sources for a substantial increase in the number of fibroblasts/myofibroblasts in IPF lungs. Tannic acid (TA), a natural dietary polyphenolic compound has been shown to possess diverse pharmacological effects...
August 3, 2017: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/28725012/phycocyanin-attenuates-pulmonary-fibrosis-via-the-tlr2-myd88-nf-%C3%AE%C2%BAb-signaling-pathway
#20
Chengcheng Li, Yan Yu, Wenjun Li, Bo Liu, Xudong Jiao, Xinyu Song, Changjun Lv, Song Qin
Our aim was to investigate the effects of phycocyanin (PC) on bleomycin (BLM)-induced pulmonary fibrosis (PF). In this study, C57 BL/6 wild-type (WT) mice and toll-like receptor (TLR) 2 deficient mice were treated with PC for 28 days following BLM exposure. Serum and lung tissues were collected on days 3, 7 and 28. Data shows PC significantly decreased the levels of hydroxyproline (HYP), vimentin, surfactant-associated protein C (SP-C), fibroblast specific protein-1 (S100A4) and α-smooth muscle actin (α-SMA) but dramatically increased E-cadherin and podoplanin (PDPN) expression on day 28...
July 19, 2017: Scientific Reports
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