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Epithelial to mesenchymal transition and fibrosis

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https://www.readbyqxmd.com/read/28820530/cxcr7-attenuates-the-tgf-%C3%AE-induced-endothelial-to-mesenchymal-transition-and-pulmonary-fibrosis
#1
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...
August 18, 2017: Molecular BioSystems
https://www.readbyqxmd.com/read/28817830/microrna-200a-inhibits-transforming-growth-factor-%C3%AE-1-induced-proximal-tubular-epithelial-mesenchymal-transition-by-targeting-%C3%AE-catenin
#2
Yi Gong, Zhexue Qin, Baoshang Zhou, Hua Chen, Zhengmin Shi, Jing Zhang
BACKGROUND: The epithelial-mesenchymal transition (EMT) is a crucial event in the development of renal interstitial fibrosis (RIF). A growing body of evidence indicates that β-catenin plays an important role in various types of fibrosis. Although members of the microRNA (miRNA)-200 family have been suggested to suppress EMT in cancer and fibrosis, the function of miRNA-200a in regulating the progression of RIF is unknown. We speculate that miRNA-200a may hinder this progression through the suppression of β-catenin...
August 18, 2017: Nephron
https://www.readbyqxmd.com/read/28816009/protective-effect-of-atazanavir-sulfate-against-pulmonary-fibrosis-in-vivo-and-in-vitro
#3
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/28810600/ethanol-extract-of-gardenia-fruit-alleviates-renal-interstitial-fibrosis-induced-by-unilateral-ureteral-obstruction-in-rats
#4
Xiaobo Li, Min Ma, Xianggui Zhang, Liang Deng, Yarong Wang, Zhuang Bian, Shining Cai, Bangya Peng, Jiangquan Yang, Yang Chen
Gardenia fruit has been used in traditional Chinese medicine for thousands of years. A previous study by the present authors indicated that the ethanol extract of gardenia fruits (EEG) primarily contains eight constituents. In the present study, the potential effects of EEG on unilateral ureteral obstruction (UUO)-induced renal interstitial fibrosis were observed in rats. A total of 30 rats were randomly divided into three groups (n=10 each): Sham group, UUO group, and EEG group, which were administered with EEG (200 mg/kg/day) or the same volume of distilled water as a vehicle...
August 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/28807717/myofibroblast-transdifferentiation-the-dark-force-in-ocular-wound-healing-and-fibrosis
#5
REVIEW
Daisy Y Shu, Frank J Lovicu
Wound healing is one of the most complex biological processes to occur in life. Repair of tissue following injury involves dynamic interactions between multiple cell types, growth factors, inflammatory mediators and components of the extracellular matrix (ECM). Aberrant and uncontrolled wound healing leads to a non-functional mass of fibrotic tissue. In the eye, fibrotic disease disrupts the normally transparent ocular tissues resulting in irreversible loss of vision. A common feature in fibrotic eye disease is the transdifferentiation of cells into myofibroblasts that can occur through a process known as epithelial-mesenchymal transition (EMT)...
August 12, 2017: Progress in Retinal and Eye Research
https://www.readbyqxmd.com/read/28800587/highly-efficient-gene-inactivation-by-adenoviral-crispr-cas9-in-human-primary-cells
#6
Olaf Voets, Frans Tielen, Edo Elstak, Julian Benschop, Max Grimbergen, Jan Stallen, Richard Janssen, Andre van Marle, Christian Essrich
Phenotypic assays using human primary cells are highly valuable tools for target discovery and validation in drug discovery. Expression knockdown (KD) of such targets in these assays allows the investigation of their role in models of disease processes. Therefore, efficient and fast modes of protein KD in phenotypic assays are required. The CRISPR/Cas9 system has been shown to be a versatile and efficient means of gene inactivation in immortalized cell lines. Here we describe the use of adenoviral (AdV) CRISPR/Cas9 vectors for efficient gene inactivation in two human primary cell types, normal human lung fibroblasts and human bronchial epithelial cells...
2017: PloS One
https://www.readbyqxmd.com/read/28798253/cyp2e1-regulates-the-development-of-radiation-induced-pulmonary-fibrosis-via-er-stress-and-ros-dependent-mechanisms
#7
Beomseok Son, TaeWoo Kwon, Sungmin Lee, IkJoon Han, Wanyeon Kim, HyeSook Youn, BuHyun Youn
Radiation-induced pulmonary fibrosis (RIPF) is one of the most common side effects of lung cancer radiotherapy. This study was conducted to identify the molecular mechanism responsible for RIPF. We revealed that the transcriptional level of cytochrome P450 2E1 (CYP2E1) was elevated by examining expression profile analysis of RIPF mouse models. We also confirmed that CYP2E1 regulated levels of endoplasmic reticulum (ER) stress and reactive oxygen species (ROS) in alveolar epithelial type II (AE2) cells and lung fibroblasts...
August 10, 2017: American Journal of Physiology. Lung Cellular and Molecular Physiology
https://www.readbyqxmd.com/read/28791399/reactive-oxygen-species-modulator-1-regulates-oxidative-stress-and-induces-renal-and-pulmonary-fibrosis-in-a-unilateral-ureteral-obstruction-rat-model-and-in-hk%C3%A2-2-cells
#8
Donghai Liu, Ying Liu, Zhenkun Xia, Haiyun Dong, Zhuwen Yi
Renal interstitial fibrosis (RIF) is the main process that leads to renal failure. It is necessary to investigate the mechanism of RIF and identify appropriate methods of regulating it. Furthermore, unilateral ureteral obstruction is a frequently used model for the study of RIF. The morphological damage associated with kidney and lung dysfunction was detected using histopathological experiments. Subsequently, high expression of reactive oxygen species (ROS) modulator 1 (ROMO1) and ROS was measured in blood serum...
August 3, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28790310/p16-ink4a-deletion-ameliorated-renal-tubulointerstitial-injury-in-a-stress-induced-premature-senescence-model-of-bmi-1-deficiency
#9
Jianliang Jin, Jianguo Tao, Xin Gu, Zhenzhen Yu, Rong Wang, Guoping Zuo, Qing Li, Xianhui Lv, Dengshun Miao
To determine whether p16 (INK4a) deletion ameliorated renal tubulointerstitial injury by inhibiting a senescence-associated secretory phenotype (SASP) in Bmi-1-deficient (Bmi-1 (-/-)) mice, renal phenotypes were compared among 5-week-old Bmi-1 and p16 (INK4a) double-knockout, and Bmi-1 (-/-) and wild-type mice. Fifth-passage renal interstitial fibroblasts (RIFs) from the three groups were analyzed for senescence and proliferation. The effect of Bmi-1 deficiency on epithelial-to-mesenchymal transition (EMT) was examined in Bmi-1-knockdown human renal proximal tubular epithelial (HK2) cells, which were treated with concentrated conditioned medium (CM) from the fifth-passage renal interstitial fibroblasts (RIFs) of above three group mice or with exogenous TGF-β1...
August 8, 2017: Scientific Reports
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
#10
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/28765970/bmp-7-enhances-snon-mrna-expression-in-renal-tubular-epithelial-cells-under-high-glucose-conditions
#11
Yuanyuan Wang, Ying Xiao, Shuang Li, Lei Shi, Lirong Liu, Yingying Zhang, Mingjun Shi, Bing Guo
The present study aimed to identify any association between bone morphogenetic protein‑7 (BMP‑7) and the expression of the transcriptional co‑repressor Ski‑related novel protein N (SnoN), in addition to alterations in tubulointerstitial fibrosis, during the development and progression of diabetic nephropathy (DN). Streptozotocin was injected into the tail veins of 20 healthy and specific pathogen‑free male Sprague‑Dawley rats. The rats were sacrificed to detect the appropriate biochemical indicators of renal pathological alterations following 24 weeks...
September 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28760545/reactive-carbonyl-compounds-impair-wound-healing-by-vimentin-collapse-and-loss-of-the-primary-cilium
#12
Lara Rodríguez-Ribera, Craig Slattery, Tara Mc Morrow, Ricard Marcos, Susana Pastor
In renal pathologies tubulo-interstitial fibrosis results from an aberrant wound-healing ability where the normal epithelial tissue is substituted for scar tissue caused by accumulation of extracellular matrix proteins (ECM). During the wound-healing process, epithelial cells may undergo epithelial-mesenchymal transition (EMT) acquiring a mesenchymal-like phenotype that allows cells to migrate and re-epithelialize the wound site. It has been reported that chronic inflammation and uremic milieu are involved in wound-healing and enhanced kidney damage in chronic kidney disease (CKD) patients...
July 29, 2017: Food and Chemical Toxicology
https://www.readbyqxmd.com/read/28758926/emt-met-at-the-crossroad-of-stemness-regeneration-and-oncogenesis-the-ying-yang-equilibrium-recapitulated-in-cell-spheroids
#13
REVIEW
Elvira Forte, Isotta Chimenti, Paolo Rosa, Francesco Angelini, Francesca Pagano, Antonella Calogero, Alessandro Giacomello, Elisa Messina
The epithelial-to-mesenchymal transition (EMT) is an essential trans-differentiation process, which plays a critical role in embryonic development, wound healing, tissue regeneration, organ fibrosis, and cancer progression. It is the fundamental mechanism by which epithelial cells lose many of their characteristics while acquiring features typical of mesenchymal cells, such as migratory capacity and invasiveness. Depending on the contest, EMT is complemented and balanced by the reverse process, the mesenchymal-to-epithelial transition (MET)...
July 29, 2017: Cancers
https://www.readbyqxmd.com/read/28744157/the-abc7-regimen-a-new-approach-to-metastatic-breast-cancer-using-seven-common-drugs-to-inhibit-epithelial-to-mesenchymal-transition-and-augment-capecitabine-efficacy
#14
Richard E Kast, Nicolas Skuli, Samuel Cos, Georg Karpel-Massler, Yusuke Shiozawa, Ran Goshen, Marc-Eric Halatsch
Breast cancer metastatic to bone has a poor prognosis despite recent advances in our understanding of the biology of both bone and breast cancer. This article presents a new approach, the ABC7 regimen (Adjuvant for Breast Cancer treatment using seven repurposed drugs), to metastatic breast cancer. ABC7 aims to defeat aspects of epithelial-to-mesenchymal transition (EMT) that lead to dissemination of breast cancer to bone. As add-on to current standard treatment with capecitabine, ABC7 uses ancillary attributes of seven already-marketed noncancer treatment drugs to stop both the natural EMT process inherent to breast cancer and the added EMT occurring as a response to current treatment modalities...
2017: Breast Cancer: Targets and Therapy
https://www.readbyqxmd.com/read/28741985/the-influence-of-fasudil-on-renal-proximal-tubular-cell-epithelial-mesenchymal-transition-induced-by-parathormone
#15
Ziqing Gao, Weiping Zhu, Hua Zhang, Zhonghe Li, Tongxia Cui
BACKGROUND: Renal fibrosis is a common pathway through which a variety of chronic kidney diseases progress to end-stage renal disease. Epithelial-mesenchymal transition (EMT) of renal proximal tubular cells is one of the most important factors in renal fibrosis. This study investigates if fasudil could influence EMT of renal proximal tubular cells. METHODS: HK-2 cells in passage 3-4 were used for all experiments. The cells were divided into five groups and treated with different concentrations of PTH and then observe cellular morphological changes at 0, 24 and 48 h using an inverted microscope and investigate the expression of the epithelial cell marker E-cadherin and the renal fibroblast marker α-smooth muscle actin (α-SMA)...
November 2017: Renal Failure
https://www.readbyqxmd.com/read/28736185/effect-of-coa-cl-on-transforming-growth-factor-%C3%AE-1-induced-epithelial-mesenchymal-transition-in-rle-abca3-cells
#16
Masashi Kawami, Junya Deguchi, Ryoko Yumoto, Norikazu Sakakibara, Ikuko Tsukamoto, Ryoji Konishi, Mikihisa Takano
Transforming growth factor (TGF)-β1 has received much attention as a major inducer of epithelial-mesenchymal transition (EMT) in pathological conditions such as cancer and organ fibrosis. In this study, we examined the effect of a novel nucleic acid analog, COA-Cl, on TGF-β1-induced EMT using RLE/Abca3, a cell line having alveolar type II cell-like phenotype. Changes in the cell morphology consistent with EMT were induced by TGF-β1, whereas, this response was suppressed by co-treatment of the cells with COA-Cl...
May 17, 2017: Drug Metabolism and Pharmacokinetics
https://www.readbyqxmd.com/read/28729638/inhibition-of-microrna-214-promotes-epithelial-mesenchymal-transition-process-and-induces-interstitial-cystitis-in-postmenopausal-women-by-upregulating-mfn2
#17
Jian-Wei Lv, Wei Wen, Chen Jiang, Qi-Bo Fu, Yin-Jun Gu, Ting-Ting Lv, Zhen-Dong Li, Wei Xue
Our study aims to investigate the roles that microRNA-214 (miR-214) plays in the epithelial mesenchymal transition (EMT) process and the development of interstitial cystitis (IC) in postmenopausal women by targeting Mitofusin 2 (Mfn2). IC bladder tissues and adjacent normal bladder tissues were collected from postmenopausal women. Immunohistochemistry (IHC) staining was conducted. The target relationship between miR-214 and Mfn2 was determined by a dual luciferase reporter gene assay. Adipose-derived mesenchymal stem cells (ADMSCs) were extracted from postmenopausal rats and assigned to the blank, mimics, miR-214 inhibitors, mimics negative control (NC), inhibitors NC, Mfn2 siRNA, miR-214 inhibitors and Mfn2 siRNA groups...
July 21, 2017: Experimental & Molecular Medicine
https://www.readbyqxmd.com/read/28725012/phycocyanin-attenuates-pulmonary-fibrosis-via-the-tlr2-myd88-nf-%C3%AE%C2%BAb-signaling-pathway
#18
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
https://www.readbyqxmd.com/read/28720775/metformin-ameliorates-the-phenotype-transition-of-peritoneal-mesothelial-cells-and-peritoneal-fibrosis-via-a-modulation-of-oxidative-stress
#19
Hyun-Soo Shin, Jiyeon Ko, Dal-Ah Kim, Eun-Sun Ryu, Hye-Myung Ryu, Sun-Hee Park, Yong-Lim Kim, Eok-Soo Oh, Duk-Hee Kang
Phenotype transition of peritoneum is an early mechanism of peritoneal fibrosis. Metformin, 5'-adenosine monophosphate-activated protein kinase (AMPK) activator, has recently received a new attention due to its preventive effect on organ fibrosis and cancer metastasis by inhibiting epithelial-to-mesenchymal transition (EMT). We investigated the effect of metformin on EMT of human peritoneal mesothelial cells (HPMC) and animal model of peritoneal dialysis (PD). TGF-β1-induced EMT in HPMC was ameliorated by metformin...
July 18, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28718381/histological-and-immunohistochemical-characterization-of-the-similarity-and-difference-between-ovarian-endometriomas-and-deep-infiltrating-endometriosis
#20
Xishi Liu, Qi Zhang, Sun-Wei Guo
Ovarian endometrioma (OMA) and deep infiltrating endometriosis (DIE) have long been recognized to have different histology and, as such, postulated to be 2 separate disease entities. Few studies, however, have attempted to elucidate the causes for their differences. Making use of ectopic endometrial tissue samples from 25 and 20 women with OMA and DIE, respectively, and control endometrial tissue samples from 25 women without endometriosis, we conducted an immunohistochemical analysis to evaluate the expression of a group of carefully chosen markers for epithelial-mesenchymal transition (EMT), fibroblast-to-myofibroblast transdifferentiation (FMT), smooth muscle metaplasia (SMM), fibrosis, vascularity, hormonal receptors, and proteins involved in epigenetic modifications...
January 1, 2017: Reproductive Sciences
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