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Myofibroblast

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https://www.readbyqxmd.com/read/28534511/stromal-derived-igf2-promotes-colon-cancer-progression-via-paracrine-and-autocrine-mechanisms
#1
C Unger, N Kramer, D Unterleuthner, M Scherzer, A Burian, A Rudisch, M Stadler, M Schlederer, D Lenhardt, A Riedl, S Walter, A Wernitznig, L Kenner, M Hengstschläger, J Schüler, W Sommergruber, H Dolznig
The insulin-like growth factor (IGF)2/IGF1 receptor (IGF1R) signaling axis has an important role in intestinal carcinogenesis and overexpression of IGF2 is an accepted risk factor for colorectal cancer (CRC) development. Genetic amplifications and loss of imprinting contribute to the upregulation of IGF2, but insufficiently explain the extent of IGF2 expression in a subset of patients. Here, we show that IGF2 was specifically induced in the tumor stroma of CRC and identified cancer-associated fibroblasts (CAFs) as the major source...
May 22, 2017: Oncogene
https://www.readbyqxmd.com/read/28533999/synchronous-inflammatory-myofibroblastic-tumor-in-lung-and-brain-a-case-report-and-review-of-literature
#2
Maham Jehangir, Aisha Jang, Imaad Ur Rehman, Nadira Mamoon
Inflammatory myofibroblastic tumor (IMT) is a rare entity and a diagnostic challenge with myriad clinical presentations and pathogenetic mechanisms. Isolated occurrences can be at any site in the body; however, only a few cases of IMT with the concomitant appearance of different organs have been published. We report a unique occurrence of bilateral inflammatory myofibroblastic tumor of the lungs with synchronous brain parenchymal lesions in an 11-year-old male, detailing clinical presentation with the emphasis on imaging and review of the literature...
April 20, 2017: Curēus
https://www.readbyqxmd.com/read/28533318/putting-the-brakes-on-hypertensive-remodeling-an-atf3-mechanism-of-myofibroblast-restraint
#3
EDITORIAL
Jennifer Davis
No abstract text is available yet for this article.
May 23, 2017: Circulation
https://www.readbyqxmd.com/read/28532900/combinatorial-screening-of-3d-biomaterial-properties-that-promote-myofibrogenesis-for-mesenchymal-stromal-cell-based-heart-valve-tissue-engineering
#4
Jenna Usprech, David A Romero, Cristina H Amon, Craig A Simmons
The physical and chemical properties of a biomaterial integrate with soluble cues in the cell microenvironment to direct cell fate and function. Predictable biomaterial-based control of integrated cell responses has been investigated with two-dimensional (2D) screening platforms, but integrated responses in 3D have largely not been explored systematically. To address this need, we developed a screening platform using polyethylene glycol norbornene (PEG-NB) as a model biomaterial with which the polymer wt% (to control elastic modulus) and adhesion peptide types (RGD, DGEA, YIGSR) and densities could be controlled independently and combinatorially in arrays of 3D hydrogels...
May 19, 2017: Acta Biomaterialia
https://www.readbyqxmd.com/read/28530639/calcium-binding-protein-s100a4-confers-mesenchymal-progenitor-cell-fibrogenicity-in-idiopathic-pulmonary-fibrosis
#5
Hong Xia, Adam Gilbertsen, Jeremy Herrera, Emilian Racila, Karen Smith, Mark Peterson, Timothy Griffin, Alexey Benyumov, Libang Yang, Peter B Bitterman, Craig A Henke
Idiopathic pulmonary fibrosis (IPF) is a progressive disease with a prevalence of 1 million persons worldwide. The fibrosis spreads from affected alveoli into contiguous alveoli and leads to death by asphyxiation. We previously discovered that the IPF lung harbors fibrogenic mesenchymal progenitor cells (MPCs) that serve as a cell of origin for disease-mediating myofibroblasts. In a prior genomewide transcriptional analysis, we found that IPF MPCs displayed increased expression of S100 calcium-binding A4 (S100A4), a protein linked to cancer cell proliferation and invasiveness...
May 22, 2017: Journal of Clinical Investigation
https://www.readbyqxmd.com/read/28530262/transtracheal-endoscopic-assisted-resection-of-a-rare-inflammatory-myofibroblastic-tumour-in-adult-trachea-a-case-report
#6
S Reddy, R Swamy, D V Kumar Irugu, K V V Ramji
Inflammatory myofibroblastic tumours (IMTs) are rare and clinically benign in childhood, and malignant in adults. The aetiology of IMTs is not clear, and recent studies report it as true neoplasm rather than a reactive or inflammatory lesion. IMTs can involve any part of the body, but are usually common in lungs. These are rarely seen in adults and tracheal involvement is also rare in both adults and children. We describe an 18-year-old woman who presented with respiratory difficulty to the emergency department...
May 22, 2017: Acta Otorhinolaryngologica Italica
https://www.readbyqxmd.com/read/28530121/glucocorticoids-retain-bi-potent-fibroblast-progenitors-during-alveolar-septation-in-mice
#7
Stephen E McGowan, Diann M McCoy
Glucocorticoids have been widely used and exert pleiotropic effects on alveolar structure and function, but do not improve the long-term clinical outcomes for patients with bronchopulmonary dysplasia, emphysema, or interstitial lung diseases. Treatments which foster alveolar regeneration could substantially improve the long-term outcomes for such patients. One approach to alveolar regeneration is to stimulate and guide intrinsic alveolar progenitors along developmental pathways used during secondary septation...
May 21, 2017: American Journal of Respiratory Cell and Molecular Biology
https://www.readbyqxmd.com/read/28529943/the-complexity-of-pdgfr-signaling-regulation-of-adipose-progenitor-maintenance-and-adipocyte-myofibroblast-transition
#8
EDITORIAL
Christian Dani, Alexander Pfeifer
No abstract text is available yet for this article.
2017: Stem Cell Investigation
https://www.readbyqxmd.com/read/28529153/model-of-vascular-desmoplastic-multispecies-tumor-growth
#9
Chin F Ng, Hermann B Frieboes
We present a three-dimensional nonlinear tumor growth model composed of heterogeneous cell types in a multicomponent-multispecies system, including viable, dead, healthy host, and extra-cellular matrix (ECM) tissue species. The model includes the capability for abnormal ECM dynamics noted in tumor development, as exemplified by pancreatic ductal adenocarcinoma, including dense desmoplasia typically characterized by a significant increase of interstitial connective tissue. An elastic energy is implemented to provide elasticity to the connective tissue...
May 18, 2017: Journal of Theoretical Biology
https://www.readbyqxmd.com/read/28527846/characterization-of-dental-pulp-myofibroblasts-in-rat-molars-after-pulpotomy
#10
Naoki Edanami, Nagako Yoshiba, Naoto Ohkura, Ryosuke Takeuchi, Aiko Tohma, Yuichiro Noiri, Kunihiko Yoshiba
INTRODUCTION: Myofibroblasts express alpha smooth muscle actin (α-SMA) and play a critical role in wound healing. Myofibroblast differentiation is controlled by the joint actions of transforming growth factor beta 1 (TGF-β1) and the extradomain A fibronectin splice variant (EDA-FN). Currently, the contribution of myofibroblasts to dental pulp healing is unknown. Therefore, we analyzed expressional characteristics of α-SMA-positive cells and investigated TGF-β1, EDA-FN, and α-SMA expression levels after pulpotomy to better understand dental pulp healing...
May 17, 2017: Journal of Endodontics
https://www.readbyqxmd.com/read/28527302/aortic-adventitial-fibroblast-sensitivity-to-mitogen-activated-protein-kinase-inhibitors-depends-on-substrate-stiffness
#11
Rebecca A Scott, Prathamesh M Kharkar, Kristi L Kiick, Robert E Akins
Adventitial fibroblasts (AFs) are key determinants of arterial function and critical mediators of arterial disease progression. The effects of altered stiffness, particularly those observed across individuals during normal vascular function, and the mechanisms by which AFs respond to altered stiffness, are not well understood. To study the effects of matrix stiffness on AF phenotype, cytokine production, and the regulatory pathways utilized to interpret basic cell-matrix interactions, human aortic AFs were grown in 5%, 7...
May 10, 2017: Biomaterials
https://www.readbyqxmd.com/read/28526812/soluble-axl-is-an-accurate-biomarker-of-cirrhosis-and-hepatocellular-carcinoma-development-results-from-a-large-scale-multicenter-analysis
#12
Mirko Dengler, Katharina Staufer, Heidemarie Huber, Rudolf Stauber, Heike Bantel, Karl Heinz Weiss, Patrick Starlinger, Hannelore Pock, Petra Klöters-Plachky, Daniel N Gotthardt, Peter Rauch, Carolin Lackner, Judith Stift, Christine Brostjan, Thomas Gruenberger, Takashi Kumada, Hidenori Toyoda, Toshifumi Tada, Thomas S Weiss, Michael Trauner, Wolfgang Mikulits
Patients with chronic liver disease (CLD) and cirrhosis are at high risk for hepatocellular carcinoma (HCC). Current diagnostic tools for HCC detection include imaging techniques and serum biomarkers such as α-fetoprotein (AFP). Yet, these methods are limited in sensitivity and specificity to accurately detect early HCC. Here we focused on the potential of soluble Axl (sAxl) as a biomarker in CLD patients by analyzing serum samples of 1067 patients and healthy controls from centers in Europe and Asia. We show that serum concentrations of sAxl were significantly increased at early (82...
May 3, 2017: Oncotarget
https://www.readbyqxmd.com/read/28525911/putative-intravascular-myofibroma-mimicking-a-vascular-malformation-with-phleboliths
#13
Daniel M Klufas, Syril Keena T Que, Marti Rothe, Hanspaul S Makkar, Michael J Murphy
Myofibroma is a rare, benign myofibroblastic tumor that commonly presents at birth or in early infancy, usually as a painless, slow-growing, solitary, nodular mass. We present a case of a 40-year-old woman with a painful, solitary, myofibroma on the right elbow. The unique features of this case include age and gender of the patient, site, pain on presentation, tumor morphology, and putative intravascular nature of the tumor.
June 2017: American Journal of Dermatopathology
https://www.readbyqxmd.com/read/28520219/plasminogen-activator-inhibitor-type-1-as-a-regulator-of-fibrosis
#14
Reyhaneh Rabieian, Maryam Boshtam, Mahshid Zareei, Shirin Kouhpayeh, Aria Masoudifar, Hamed Mirzaei
Fibrosis is known as a frequent and irreversible pathological condition which is associated with organ failure. Tissue fibrosis is a central process in a variety of chronic progressive diseases such as diabetes, hypertension, and persistent inflammation. This state could contribute to chronic injury and the initiation of tissue repair. Fibrotic disorders represent abnormal wound healing with defective matrix turnover and clearance that lead to excessive accumulation of extracellular matrix components. A variety of identified growth factors, cytokines, and persistently activated myofibroblasts have critical roles in the pathogenesis of fibrosis...
May 18, 2017: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/28517972/glycated-collagen-stimulates-the-differentiation-of-gingival-myofibroblasts
#15
Ignacio N Retamal, Romina Hernández, Francisco Melo, Paulina Zapata, Constanza Martínez, Jorge Martínez, Patricio C Smith
BACKGROUND: Glucose-derived metabolites may alter the structure and biological properties of important proteins in the periodontium such as collagens. As a consequence, it is possible that collagen-binding cells may change their phenotypic traits. Though the glucose derived product methylglyoxal has been detected in periodontal lesions, the precise effect of collagen glycation on gingival connective tissue biology is far from being understood. In the present study we have evaluated whether collagen glycation by methylglyoxal may affect the phenotypic properties and remodeling capacity of human gingival fibroblasts...
May 18, 2017: Journal of Periodontology
https://www.readbyqxmd.com/read/28515727/basics-of-radiation-biology-when-treating-hyperproliferative-benign-diseases
#16
REVIEW
Franz Rödel, Claudia Fournier, Julia Wiedemann, Felicitas Merz, Udo S Gaipl, Benjamin Frey, Ludwig Keilholz, M Heinrich Seegenschmiedt, Claus Rödel, Stephanie Hehlgans
For decades, low- and moderate-dose radiation therapy (RT) has been shown to exert a beneficial therapeutic effect in a multitude of non-malignant conditions including painful degenerative muscoloskeletal and hyperproliferative disorders. Dupuytren and Ledderhose diseases are benign fibroproliferative diseases of the hand/foot with fibrotic nodules and fascial cords, which determine debilitating contractures and deformities of fingers/toes, while keloids are exuberant scar formations following burn damage, surgery, and trauma...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28514938/characterization-and-standardization-of-cultured-cardiac-fibroblasts-for-ex-vivo-models-of-heart-fibrosis-and-heart-ischemia
#17
Yue Zhou, Arthur Mark Richards, Peipei Wang
A full understanding of cardiac fibroblast (cFB) biology is essential to study the adverse cardiac remodeling and recovery of myocardium infarction. However, compared to cardiac myocytes, cFB are less well-characterized. Important questions including the variability introduced by cell age (neonatal vs. adult), culture conditions (passage, plate coating and culture medium), and responses to stimuli (e.g. hypoxia and drug treatments) have not been well addressed and standardization of techniques is lacking. This variability invites inconsistency and the confounding of study conclusions...
May 17, 2017: Tissue Engineering. Part C, Methods
https://www.readbyqxmd.com/read/28512246/tumor-associated-macrophages-promote-malignant-progression-of-breast-phyllodes-tumors-by-inducing-myofibroblast-differentiation
#18
Yan Nie, Jia-Ning Chen, Di Huang, Yandan Yao, Jiewen Chen, Lin Ding, Jiayi Zeng, Shicheng Su, Xue Chao, Fengxi Su, Herui Yao, Hai Hu, Erwei Song
Myofibroblast differentiation plays an important role in the malignant progression of phyllodes tumor (PT), a fast-growing neoplasm derived from periductal stromal cells of the breast. Macrophages are frequently found in close proximity with myofibroblasts, but it is uncertain whether they are involved in the myofibroblast differentiation during PT progression. Here we show that increased density of tumor associated macrophage (TAM) correlates with malignant progression of PT. We found that TAM stimulated myofibroblast differentiation and promoted the proliferation and invasion of PT cells...
May 16, 2017: Cancer Research
https://www.readbyqxmd.com/read/28511663/basic-fibroblast-growth-factor-reduces-scar-by-inhibiting-the-differentiation-of-epidermal-stem-cells-to-myofibroblasts-via-the-notch1-jagged1-pathway
#19
Peng Wang, Bin Shu, Yingbin Xu, Jiayuan Zhu, Jian Liu, Ziheng Zhou, Lei Chen, Jingling Zhao, Xusheng Liu, Shaohai Qi, Kun Xiong, Julin Xie
BACKGROUND: Basic fibroblast growth factor (bFGF) plays an important role in promoting wound healing and reducing scar, but the possible molecular mechanisms are still unclear. Our previous studies have found that activating the Notch1/Jagged1 pathway can inhibit the differentiation of epidermal stem cells (ESCs) to myofibroblasts (MFB). Herein, we document that bFGF reduces scar by inhibiting the differentiation of ESCs to MFB via activating the Notch1/Jagged1 pathway. METHODS: In in-vitro study, ESCs were isolated from 10 neonatal SD rats (1-3 days old), cultured in keratinocyte serum-free medium, and divided into six groups: bFGF group, bFGF + SU5402 group, bFGF + DAPT group, siJagged1 group, bFGF + siJagged1 group, and control group...
May 16, 2017: Stem Cell Research & Therapy
https://www.readbyqxmd.com/read/28506744/hepatic-stellate-cells-as-key-target-in-liver-fibrosis
#20
Takaaki Higashi, Scott L Friedman, Yujin Hoshida
Progressive liver fibrosis, induced by chronic viral and metabolic disorders, leads to more than one million deaths annually via development of cirrhosis, although no antifibrotic therapy has been approved to date. Transdifferentiation (or "activation") of hepatic stellate cells is the major cellular source of matrix protein-secreting myofibroblasts, the major driver of liver fibrogenesis. Paracrine signals from injured epithelial cells, fibrotic tissue microenvironment, immune and systemic metabolic dysregulation, enteric dysbiosis, and hepatitis viral products can directly or indirectly induce stellate cell activation...
May 12, 2017: Advanced Drug Delivery Reviews
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