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Epithelial mesenchymal transformation

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https://www.readbyqxmd.com/read/28819404/activin-b-regulates-adhesion-invasiveness-and-migratory-activities-in-oral-cancer-a-potential-biomarker-for-metastasis
#1
Akihiro Kita, Atsushi Kasamatsu, Dai Nakashima, Yosuke Endo-Sakamoto, Sho Ishida, Toshihiro Shimizu, Yasushi Kimura, Isao Miyamoto, Shusaku Yoshimura, Masashi Shiiba, Hideki Tanzawa, Katsuhiro Uzawa
Activin B, a homodimer of inhibin beta b (INHBB), is a multifunctional cytokine belonging to the transforming growth factor-β (TGF-β) family. However, the molecular functions and clinical relevance of activin B have not been determined in oral cancer. We investigated the critical roles of activin B in oral squamous cell carcinoma (OSCC). We performed quantitative reverse transcriptase-polymerase chain reaction, Western blotting, and immunohistochemistry to study INHBB expression in OSCC-derived cell lines and OSCC clinical samples...
2017: Journal of Cancer
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/28817313/ccr7-mediates-tgf-%C3%AE-1-induced-human-malignant-glioma-invasion-migration-and-epithelial-mesenchymal-transition-by-activating-mmp2-9-through-the-nuclear-factor-kappab-signaling-pathway
#3
Yanyan Zheng, Yiting Miu, Xiaokai Yang, Xiaoguo Yang, Meijia Zhu
Chemokine receptor 7 (CCR7) has emerged as an inducer of invasion, migration, and epithelial-mesenchymal transition (EMT) in cancer. In this research, human malignant glioma cells were stimulated with transforming growth factor beta 1 (TGF-β1) and siCCR7. The data show that CCR7 mediates TGF-β1-induced EMT, migration, and invasion in U251 and U87 cells and that these effects of TGF-β1 were reversed by treatment with siCCR7 or a CCR7 neutralizing antibody. Importantly, the TGF-β1-mediated increase in nuclear factor kappaB (NF-κB) activity in human glioma cells was reduced by treatment with siCCR7 or a CCR7 neutralizing antibody...
August 17, 2017: DNA and Cell Biology
https://www.readbyqxmd.com/read/28811384/loss-of-spdef-and-gain-of-tgfbi-activity-after-androgen-deprivation-therapy-promote-emt-and-bone-metastasis-of-prostate-cancer
#4
Wei-Yu Chen, Yuan-Chin Tsai, Hsiu-Lien Yeh, Florent Suau, Kuo-Ching Jiang, Ai-Ning Shao, Jiaoti Huang, Yen-Nien Liu
Androgen deprivation therapy (ADT) targeting the androgen receptor (AR) is a standard therapeutic regimen for treating prostate cancer. However, most tumors progress to metastatic castration-resistant prostate cancer after ADT. We identified the type 1, 2, and 4 collagen-binding protein transforming growth factor-β (TGFβ)-induced protein (TGFBI) as an important factor in the epithelial-to-mesenchymal transition (EMT) and malignant progression of prostate cancer. In prostate cancer cell lines, AR signaling stimulated the activity of the transcription factor SPDEF, which repressed the expression of TGFBI ADT, AR antagonism, or overexpression of TGFBI inhibited the activity of SPDEF and enhanced the proliferation rates of prostate cancer cells...
August 15, 2017: Science Signaling
https://www.readbyqxmd.com/read/28810600/ethanol-extract-of-gardenia-fruit-alleviates-renal-interstitial-fibrosis-induced-by-unilateral-ureteral-obstruction-in-rats
#5
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/28809418/native-extracellular-matrix-derived-semipermeable-optically-transparent-and-inexpensive-membrane-inserts-for-microfluidic-cell-culture
#6
Mark J Mondrinos, Yoon-Suk Yi, Nan-Kun Wu, Xueting Ding, Dongeun Huh
Semipermeable cell culture membranes are commonly used in multilayered microfluidic devices to mimic the basement membrane in vivo and to create compartmentalized microenvironments for physiological cell growth and differentiation. However, existing membranes are predominantly made up of synthetic polymers, providing limited capacity to replicate cellular interactions with native extracellular matrices that play a crucial role in the induction of physiological phenotypes. Here we describe a new type of cell culture membranes engineered from native extracellular matrix (ECM) materials that are thin, semipermeable, optically transparent, and amenable to integration into microfluidic cell culture devices...
August 15, 2017: Lab on a Chip
https://www.readbyqxmd.com/read/28808957/differential-effect-of-tgf%C3%AE-on-the-proteome-of-cancer-associated-fibroblasts-and-cancer-epithelial-cells-in-a-co-culture-approach-a-short-report
#7
Maria Magdalena Koczorowska, Charlotte Friedemann, Klaus Geiger, Marie Follo, Martin Lothar Biniossek, Oliver Schilling
BACKGROUND: Solid tumors contain various components that together form the tumor microenvironment. Cancer associated fibroblasts (CAFs) are capable of secreting and responding to signaling molecules and growth factors. Due to their role in tumor development, CAFs are considered as potential therapeutic targets. A prominent tumor-associated signaling molecule is transforming growth factor β (TGFβ), an inducer of epithelial-to-mesenchymal transition (EMT). The differential action of TGFβ on CAFs and ETCs (epithelial tumor cells) has recently gained interest...
August 14, 2017: Cellular Oncology (Dordrecht)
https://www.readbyqxmd.com/read/28807903/transgelin-expressing-myofibroblasts-orchestrate-ventral-midline-closure-through-tgf-%C3%AE-signalling
#8
Bashar Aldeiri, Urmas Roostalu, Alessandra Albertini, Jason Wong, Antonino Morabito, Giulio Cossu
Ventral body wall (VBW) defects are among the most common congenital malformations, yet their embryonic origin and underlying molecular mechanisms have remained poorly characterized. Although transforming growth factor beta (TGF-β) signalling is essential for VBW closure the responding cells are not known. Here we identify a population of migratory myofibroblasts at the leading edge of the closing VBW that express the actin-binding protein Transgelin (TAGLN) and TGF-β receptor (TGFβR). These cells respond to a temporally regulated TGF-β2 gradient originating from the epithelium of the primary body wall...
August 14, 2017: Development
https://www.readbyqxmd.com/read/28807820/the-biology-function-and-clinical-implications-of-exosomes-in-lung-cancer
#9
Li Zhou, Tangfeng Lv, Qun Zhang, Qingqing Zhu, Ping Zhan, Suhua Zhu, Jianya Zhang, Yong Song
Exosomes are 30-100 nm small membrane vesicles of endocytic origin that are secreted by all types of cells, and can also be found in various body fluids. Increasing evidence implicates that exosomes confer stability and can deliver their cargos such as proteins and nucleic acids to specific cell types, which subsequently serve as important messengers and carriers in lung carcinogenesis. Here, we describe the biogenesis and components of exosomes mainly in lung cancer, we summarize their function in lung carcinogenesis (epithelial mesenchymal transition, oncogenic cell transformation, angiogenesis, metastasis and immune response in tumor microenvironment), and importantly we focus on the clinical potential of exosomes as biomarkers and therapeutics in lung cancer...
August 12, 2017: Cancer Letters
https://www.readbyqxmd.com/read/28807717/myofibroblast-transdifferentiation-the-dark-force-in-ocular-wound-healing-and-fibrosis
#10
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/28801702/paeonol-attenuates-aging-mrc-5-cells-and-inhibits-epithelial-mesenchymal-transition-of-premalignant-hacat-cells-induced-by-aging-mrc-5-cell-conditioned-medium
#11
Lihua Yang, Shangping Xing, Kun Wang, Hua Yi, Biaoyan Du
Senescence-associated secretory phenotype (SASP) factors, such as IL-6 and IL-8, are extremely critical in tissue microenvironment. Senescent human fibroblasts facilitate epithelial-mesenchymal transition (EMT) in premalignant epithelial cells mainly through the secretion of SASP factors. Meanwhile, premalignant human HaCaT Keratinocyte (HaCaT) cells as immortal epithelial cells are susceptible to malignant transformation. Paeonol, an herbal phenolic component found in peonies, exerts anti-aging and anti-tumor efficacies, while the molecular mechanisms of paeonol on EMT in premalignant HaCaT cells induced by SASP factors are unclear...
August 12, 2017: Molecular and Cellular Biochemistry
https://www.readbyqxmd.com/read/28796927/epithelial-to-mesenchymal-transition-contributes-to-invasion-in-squamous-cell-carcinomas-originated-from-actinic-keratosis-through-the-differentiated-pathway-whereas-proliferation-plays-a-more-significant-role-in-the-classical-pathway
#12
X Saenz-Sardà, C Carrato, L Pérez-Roca, L Puig, C Ferrándiz, A Ariza, M T Fernández-Figueras
BACKGROUND: Every actinic keratosis (AK) starts with atypia at the basal layers of the epidermis (AK I). Progression into invasive squamous cell carcinoma (iSCC) may occur following two main pathways, classical and differentiated. In the former, iSCC only occurs after involvement of the upper epidermal layers by atypical cells (AK III), while in the latter iSCC develops directly from AK I. In the anogenital mucosa, these two pathways are associated with differential expression of p53 and p16...
August 10, 2017: Journal of the European Academy of Dermatology and Venereology: JEADV
https://www.readbyqxmd.com/read/28796150/the-role-of-cancer-derived-exosomes-in-tumorigenicity-epithelial-to-mesenchymal-transition
#13
REVIEW
Robert H Blackwell, Kimberly E Foreman, Gopal N Gupta
Epithelial-to-mesenchymal transition (EMT) is a process by which epithelial cells lose their basement membrane interaction and acquire a more migratory, mesenchymal phenotype. EMT has been implicated in cancer cell progression, as cells transform and increase motility and invasiveness, induce angiogenesis, and metastasize. Exosomes are 30-100 nm membrane-bound vesicles that are formed and excreted by all cell types and released into the extracellular environment. Exosomal contents include DNA, mRNA, miRNA, as well as transmembrane- and membrane-bound proteins derived from their host cell contents...
August 10, 2017: Cancers
https://www.readbyqxmd.com/read/28794289/differentiation-of-mesenchymal-stem-cells-towards-nephrogenic-lineage-and-their-enhanced-resistance-to-oxygen-peroxide-induced-oxidative-stress
#14
Asima Tayyeb, Naveed Shahzad, Gibran Ali
INTRODUCTION: Mesenchymal stem cells (MSCs) have been publicized to ameliorate kidney injury both in vitro and in vivo. However, very less is known if MSCs can be differentiated towards renal lineages and their further application potential in kidney injuries. MATERIALS AND METHODS: The present study developed a conditioning system of growth factors fibroblast growth factor 2, transforming growth factor-β2, and leukemia inhibitory factor for in vitro differentiation of MSCs isolated from different sources towards nephrogenic lineage...
July 2017: Iranian Journal of Kidney Diseases
https://www.readbyqxmd.com/read/28791412/benzo-a-pyrene-enhances-the-emt-associated-migration-of-lung-adenocarcinoma-a549-cells-by-upregulating-twist1
#15
Xi Chen, Hongbing Peng, Jian Xiao, Anqi Guan, Bin Xie, Bixiu He, Qiong Chen
Benzo(a)pyrene (BaP), an important toxic component of cigarette smoke, can cause lung cancer and lead to the progression of lung cancer. In the present study, we investigated the effect of BaP on the migration of lung adenocarcinoma A549 cells. BaP (1 µM) promoted the migration of A549 cells in a time-dependent manner and upregulated the expression of the Twist family BHLH transcription factor 1 (Twist1). BaP also induced upregulation of the mesenchymal markers N-cadherin and vimentin and downregulation of the epithelial marker E-cadherin...
August 3, 2017: Oncology Reports
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
#16
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/28790453/perianal-fistulizing-crohn-s-disease-pathogenesis-diagnosis-and-therapy
#17
REVIEW
Julián Panés, Jordi Rimola
Perianal fistulizing Crohn's disease has a major negative effect on patient quality of life and is a predictor of poor long-term outcomes. Factors involved in the pathogenesis of perianal fistulizing Crohn's disease include an increased production of transforming growth factor β, TNF and IL-13 in the inflammatory infiltrate that induce epithelial-to-mesenchymal transition and upregulation of matrix metalloproteinases, leading to tissue remodelling and fistula formation. Care of patients with perianal Crohn's disease requires a multidisciplinary approach...
August 9, 2017: Nature Reviews. Gastroenterology & Hepatology
https://www.readbyqxmd.com/read/28789953/hypoxia-promotes-the-skewed-differentiation-of-umbilical-cord-mesenchymal-stem-cells-toward-type-ii-alveolar-epithelial-cells-by-regulating-microrna-145
#18
Yang Li, Xu Shi, Liming Yang, Yan Mou, Yingbo Li, Rongjing Dang, Changyuan Li
Mesenchymal stem cells (MSCs) are well recognized for their ability to differentiate into type II alveolar epithelial (ATII) cells in damaged lungs, which is critical for reepithelization and recovery in acute lung injury (ALI). However, the high level of transforming growth factor-β (TGF-β) commonly seen in injured lung tissues is also able to induce MSCs to differentiate into fibroblast-like cells. In this study, we found that hypoxia could promote umbilical cord mesenchymal stem cells (UCMSCs) differentiation into ATII cells rather than into fibroblast-like cells, and this effect was mainly mediated by microRNA-145 (miR-145), which could induce the inhibition of TGF-β signaling by targeting TGF-β receptor II (TGFβRII)...
August 5, 2017: Gene
https://www.readbyqxmd.com/read/28783415/cadherin-mediated-cell-cell-interactions-in-normal-and-cancer-cells
#19
Natalya A Gloushankova, Svetlana N Rubtsova, Irina Y Zhitnyak
Adherens junctions (AJs) are molecular complexes that mediate cell-cell adhesive interactions and play pivotal roles in maintenance of tissue organization in adult organisms and at various stages of development. AJs consist of cadherin adhesion receptors, providing homophilic ligation with cadherins on adjacent cells, and members of the catenin protein family: p120, β- and α-catenin. α-catenin's linkage with the actin cytoskeleton defines the linear or punctate organization of AJs in different cell types...
July 20, 2017: Tissue Barriers
https://www.readbyqxmd.com/read/28782530/chemotherapeutics-resistance-arms-race-an-update-on-mechanisms-involved-in-resistance-limiting-egfr-inhibitors-in-lung-cancer
#20
REVIEW
Pankaj Kumar Singh, Om Silakari
Clinical reports suggest that EGFR-mutated lung cancer usually respond significantly towards small molecule tyrosine kinase inhibitors. Same studies also report the eventual development of acquired resistance within a median time interval of 9 to 14months. One of the major mechanisms involved in this acquired resistance was found to be a secondary point mutation at gate-keeper residue, EGFR T790M. However, there are other recent studies which disclose the role of few other novel key players such as, ZEB1, TOPK etc...
August 4, 2017: Life Sciences
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