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https://www.readbyqxmd.com/read/28811128/a-newly-synthesized-ligustrazine-stilbene-derivative-inhibits-pdgf-bb-induced-vascular-smooth-muscle-cell-phenotypic-switch-and-proliferation-via-delaying-cell-cycle-progression
#1
Chunlian Peng, Siming Zhang, Haixin Liu, Yanxiao Jiao, Guifa Su, Yan Zhu
Vascular Smooth muscle cells (VSMCs) possess remarkable phenotype plasticity that allows it to rapidly adapt to fluctuating environmental cues, including the period of development and progression of vascular diseases such as atherosclerosis and restenosis subsequent to vein grafting or coronary intervention. Although VSMC phenotypic switch is an attractive target, there is no effective drug so far. Using rat aortic VSMCs, we investigate the effects of Ligustrazine and its synthetic derivatives on platelet-derived growth factor-BB (PDGF-BB) induced proliferation and phenotypic switch by a cell image-based screening of 60 Ligustrazine stilbene derivatives...
August 12, 2017: European Journal of Pharmacology
https://www.readbyqxmd.com/read/28810065/olodaterol-shows-anti-fibrotic-efficacy-in-in-vitro-and-in-vivo-models-of-pulmonary-fibrosis
#2
Franziska Elena Herrmann, Lutz Wollin, Johannes Wirth, Florian Gantner, Bärbel Lämmle, Eva Wex
BACKGROUND AND PURPOSE: Idiopathic pulmonary fibrosis (IPF) is a fatal respiratory disease characterized by excessive fibroblast activation ultimately leading to scarring of the lungs. Although, the activation of β2 -adrenergic receptors (β2 -AR) has been shown to inhibit pro-fibrotic events primarily in cell lines, the role of β2 -AR agonism has not yet been fully characterized. The aim of our study was to explore the anti-fibrotic activity of the long-acting β2 -AR-agonist olodaterol in primary human lung fibroblasts, and in murine models of pulmonary fibrosis...
August 15, 2017: British Journal of Pharmacology
https://www.readbyqxmd.com/read/28808001/two-transmembrane-dimers-of-the-bovine-papillomavirus-e5-oncoprotein-clamp-the-pdgf-%C3%AE-receptor-in-an-active-dimeric-conformation
#3
Alexander G Karabadzhak, Lisa M Petti, Francisco N Barrera, Anne P B Edwards, Andrés Moya-Rodríguez, Yury S Polikanov, J Alfredo Freites, Douglas J Tobias, Donald M Engelman, Daniel DiMaio
The dimeric 44-residue E5 protein of bovine papillomavirus is the smallest known naturally occurring oncoprotein. This transmembrane protein binds to the transmembrane domain (TMD) of the platelet-derived growth factor β receptor (PDGFβR), causing dimerization and activation of the receptor. Here, we use Rosetta membrane modeling and all-atom molecular dynamics simulations in a membrane environment to develop a chemically detailed model of the E5 protein/PDGFβR complex. In this model, an active dimer of the PDGFβR TMD is sandwiched between two dimers of the E5 protein...
August 14, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28805233/analytic-and-dynamic-secretory-profile-of-patient-derived-cytokine-induced-killer-cells
#4
Giulia Mesiano, Roberta Zini, Giulia Montagner, Nicoletta Bianchi, Rossella Manfredini, Antonella Chillemi, Massimo Aglietta, Giovanni Grignani, Ilaria Lampronti, Erika Fiorino, Fabio Malavasi, Dario Sangiolo, Roberto Gambari, Davide Ferrari
Adoptive immunotherapy with Cytokine Induced Killer (CIK) cells has shown antitumor activity against several kinds of cancers in preclinical models and clinical trials. CIK cells are a subset of ex vivo expanded T lymphocytes with T-NK phenotype and MHC-unrestricted antitumor activity. Literature provides scanty information on cytokines, chemokines and growth factors secreted by CIK cells. Therefore, we investigated the secretory profile of CIK cells generated from tumor patients. The secretome analysis was performed at specific time points (day 1, day 14 and day 21) of CIK cells expansion...
August 9, 2017: Molecular Medicine
https://www.readbyqxmd.com/read/28805145/pdgf-vegf-related-receptor-affects-transglutaminase-activity-to-control-cell-migration-during-crustacean-hematopoiesis
#5
Kingkamon Junkunlo, Chadanat Noonin, Kenneth Söderhäll, Irene Söderhäll
The platelet-derived growth factor (PDGF) receptor, a tyrosine kinase receptor whose ligand is PDGF, is crucial in the transduction of extracellular signals into cells and mediates numerous processes, such as cell proliferation, differentiation, survival and migration. We demonstrate the important roles of a receptor tyrosine kinase related to the PDGF/VEGF family protein (PVR) in controlling hematopoietic progenitor cell migration by affecting extracellular transglutaminase (TGase) activity. Pl_PVR1, GenBank accession number KY444650, is highly expressed in hemocytes and the hematopoietic tissue (HPT)...
August 12, 2017: Stem Cells and Development
https://www.readbyqxmd.com/read/28805015/stromelysin-2-mmp-10-a-novel-mediator-of-vascular-remodeling-underlying-pulmonary-hypertension-associated-with-systemic-sclerosis
#6
Jérôme Avouac, Christophe Guignabert, Anna Maria Hoffmann-Vold, Barbara Ruiz, Peter Dorfmuller, Sonia Pezet, Olivia Amar, Ly Tu, Jérôme Van Wassenhove, Jérémy Sadoine, David Launay, Muriel Elhai, Anne Cauvet, Arun Subramaniam, Robert Resnick, Eric Hachulla, Øyvind Molberg, André Kahan, Marc Humbert, Yannick Allanore
OBJECTIVE: To decipher the role of gene candidates involved in pulmonary hypertension (PH) associated with systemic sclerosis (SSc). METHODS: Gene candidates were identified through microarray experiments performed on Affymetrix GeneChip(®) Human Exon 1.0 ST Arrays in endothelial progenitor cell (EPC)-derived endothelial cells (ECs) issued from patients with SSc-PH, SSc without PH and controls. Expression of identified candidates was assessed by quantitative sandwich ELISA in the serum and by immunohistochemistry in lesional lung tissue...
August 13, 2017: Arthritis & Rheumatology
https://www.readbyqxmd.com/read/28802066/targeting-senescent-cholangiocytes-and-activated-fibroblasts-with-bcl-xl-inhibitors-ameliorates-fibrosis-in-mdr2-mice
#7
Anja Moncsek, Mohammed S Al-Suraih, Christy E Trussoni, Steven P O'Hara, Patrick L Splinter, Camille Zuber, Eleonora Patsenker, Piero V Valli, Christian D Fingas, Achim Weber, Yi Zhu, Tamar Tchkonia, James L Kirkland, Gregory J Gores, Beat Müllhaupt, Nicholas F LaRusso, Joachim C Mertens
Cholangiocyte senescence has been linked to primary sclerosing cholangitis (PSC). Persistent secretion of growth factors by senescent cholangiocytes leads to the activation of stromal fibroblasts (ASF), which are drivers of fibrosis. The activated phenotype of ASF is characterized by an increased sensitivity to apoptotic stimuli. Here, we examined the mechanisms of apoptotic priming in ASF and explored a combined targeting strategy to deplete senescent cholangiocytes and ASF from fibrotic tissue to ameliorate liver fibrosis...
August 12, 2017: Hepatology: Official Journal of the American Association for the Study of Liver Diseases
https://www.readbyqxmd.com/read/28801346/pan-ppar-agonist-iva337-is-effective-in-experimental-lung-fibrosis-and-pulmonary-hypertension
#8
Jerome Avouac, Irena Konstantinova, Christophe Guignabert, Sonia Pezet, Jeremy Sadoine, Thomas Guilbert, Anne Cauvet, Ly Tu, Jean-Michel Luccarini, Jean-Louis Junien, Pierre Broqua, Yannick Allanore
OBJECTIVE: To evaluate the antifibrotic effects of the pan-peroxisome proliferator-activated receptor (PPAR) agonist IVA337 in preclinical mouse models of pulmonary fibrosis and related pulmonary hypertension (PH). METHODS: IVA337 has been evaluated in the mouse model of bleomycin-induced pulmonary fibrosis and in Fra-2 transgenic mice, this latter being characterised by non-specific interstitial pneumonia and severe vascular remodelling of pulmonary arteries leading to PH...
August 11, 2017: Annals of the Rheumatic Diseases
https://www.readbyqxmd.com/read/28801243/peroxiredoxin-2-plays-a-pivotal-role-as-multimodal-cytoprotector-in-the-early-phase-of-pulmonary-hypertension
#9
Enrica Federti, Alessandro Matte', Alessandra Ghigo, Immacolata Andolfo, Cimino James, Angela Siciliano, Christophe Leboeuf, Anne Janin, Francesco Manna, Soo Young Choi, Achille Iolascon, Elisabetta Beneduce, Davide Melisi, Dae Won Kim, Sonia Levi, Lucia De Franceschi
Pulmonary-artery-hypertension (PAH) is a life-threatening and highly invalidating chronic disorder. Chronic oxidation contributes to lung damage and disease progression. Peroxiredoxin-2 (Prx2) is a typical 2-cysteine (Cys) peroxiredoxin but its role on lung homestasis is yet to be fully defined. Here, we showed that Prx2(-/-) mice displayed chronic lung inflammatory disease associated with (i) abnormal pulmonary vascular dysfunction; and (ii) increased markers of extracellular-matrix remodeling. Hypoxia was used to induce PAH...
August 8, 2017: Free Radical Biology & Medicine
https://www.readbyqxmd.com/read/28800959/mybph-inhibits-vascular-smooth-muscle-cell-migration-and-attenuates-neointimal-hyperplasia-in-a-rat-carotid-balloon-injury-model
#10
Ting Zhu, Yi He, Jue Yang, Weiguo Fu, Xin Xu, Yi Si
Vascular smooth muscle cell (VSMC) migration is implicated in restenosis. Myosin binding protein H (MYBPH) is capable of reducing cell motility and metastasis. In this study, we sought to determine whether MYBPH is involved in VSMC migration and neointima formation in response to vascular injury. To determine the expression of MYBPH in injured artery, we used a standard rat carotid artery balloon-injury model. In vivo studies have demonstrated that MYBPH is upregulated after vascular injury. VSMCs treated with platelet-derived growth factor (PDGF)-BB displayed increased MYBPH mRNA and protein levels...
August 8, 2017: Experimental Cell Research
https://www.readbyqxmd.com/read/28799067/mir-448-promotes-vascular-smooth-muscle-cell-proliferation-and-migration-in-through-directly-targeting-mef2c
#11
Weimin Li, Ruihong Zhang, Li Sui, Xiaojian Hong, Mao Yang
Abnormal proliferation and migration of vascular smooth muscle cells (VSMCs) is a critical process in various cardiovascular diseases such as coronary artery disease (CAD), atherosclerosis, stroke, and hypertension. MicroRNAs (miRNAs) are small, short, and noncoding RNAs that inhibit gene expression through binding to the 3'-UTR (3' untranslated regions) of target gene mRNAs. We showed that the expression of miR-448 was upregulated in VSMCs from coronary atherosclerotic plaques compared with normal coronary artery tissues...
August 11, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28796997/dynamics-of-inflammatory-factors-in-aqueous-humor-during-ranibizumab-or-aflibercept-treatment-for-age-related-macular-degeneration
#12
Ryosuke Motohashi, Hidetaka Noma, Kanako Yasuda, Osamu Kotake, Hiroshi Goto, Masahiko Shimura
PURPOSE: To evaluate the dynamic changes of the aqueous humor levels of inflammatory factors between patients receiving intravitreal ranibizumab injection (IRI) and aflibercept injection (IAI) in patients with exudative age-related macular degeneration (AMD). METHODS: The study was performed on 30 eyes with AMD that were scheduled to receive 3 doses of IRI (15 eyes) or IAI (15 eyes) at monthly intervals. Aqueous humor samples were collected when injection was done...
August 11, 2017: Ophthalmic Research
https://www.readbyqxmd.com/read/28791754/endothelial-precursor-cells-stimulate-pericyte-like-coverage-of-bone-marrow-derived-mesenchymal-stem-cells-through-pdgf-bb-induction-which-is-enhanced-by-substance-p
#13
Mingzi Zhang, Woosung Ahn, Sumin Kim, Hyun Sook Hong, Chengshi Quan, Youngsook Son
OBJECTIVE: The aim of this study was to evaluate the angiogenicity of a combination of bone marrow-derived endothelial precursor cells (BM-EPCs) and bone marrow-derived mesenchymal stem cells (BM-MSCs) in vitro in the presence of substance P (SP), and its working mechanism. METHODS: BM-MSCs and BM-EPCs were co-cultured with or without SP. ELISA and RT-PCR were performed to detect angiogenic factors such as vascular endothelial growth factor (VEGF) and platelet-derived growth factor (PDGF-BB)...
August 8, 2017: Microcirculation: the Official Journal of the Microcirculatory Society, Inc
https://www.readbyqxmd.com/read/28780584/platelet-derived-growth-factor-alpha-pdgfr%C3%AE-induces-the-activation-of-cardiac-fibroblasts-by-activating-c-kit
#14
Lexun Wang, Yuan Yue, Xiao Yang, Tian Fan, Bo Mei, Jian Hou, Mengya Liang, Guangxian Chen, Zhongkai Wu
BACKGROUND Enhanced platelet-derived growth factor receptor a (PDGFRα) signaling pathway activity leads to cardiac fibrosis. However, because of the pleiotropic effects of PDGFR signaling, its role in mediating the cardiac fibrotic response remains poorly understood. This study aimed to investigate the regulatory effect of c-Kit in cardiac fibroblasts activated by PDGFRa signaling. MATERIAL AND METHODS A cardiac fibrosis mice model was induced using isoproterenol, and the heart tissues of mice were tested through western blotting and real-time quantitative PCR (RT-qPCR)...
August 6, 2017: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/28779552/oncostatin-m-causes-liver-fibrosis-by-regulating-cooperation-between-hepatic-stellate-cells-and-macrophages-in-mice
#15
Michitaka Matsuda, Shinya Tsurusaki, Naoko Miyata, Eiko Saijou, Hitoshi Okochi, Atsushi Miyajima, Minoru Tanaka
Fibrosis is an important wound-healing process in injured tissues, but excessive fibrosis is often observed in patients with chronic inflammation. While Oncostatin M (OSM) has been reported to play crucial roles for the recovery from acute liver injury by inducing tissue inhibitor of metalloproteinase 1 (Timp1) expression, the role of OSM in chronic liver injury is yet to be elucidated. Here we show that OSM exerts powerful fibrogenic activity by regulating macrophage activation during chronic liver injury...
August 5, 2017: Hepatology: Official Journal of the American Association for the Study of Liver Diseases
https://www.readbyqxmd.com/read/28778046/desalted-salicornia-europaea-extract-attenuated-vascular-neointima-formation-by-inhibiting-the-mapk-pathway-mediated-migration-and-proliferation-in-vascular-smooth-muscle-cells
#16
Kyung Jong Won, Kang Pa Lee, Suji Baek, Long Cui, Mee-Hyang Kweon, Seung Hyo Jung, Yun-Kyoung Ryu, Jung Min Hong, Eun-Ah Cho, Hwa-Sup Shin, Bokyung Kim
Salicornia europaea L. (SE) has been used as folk medicine for the treatment of various diseases such as obesity, diabetes, and cancer. However, its effects on atherosclerotic events in vascular smooth muscle cells (VSMCs) remain unknown. The present study explored the effects of the ethyl acetate fraction of desalted SE hot water extract (SEWEAF) on atherosclerotic responses (especially migration and proliferation) in VSMCs and vascular neointima formation. Treatment with the SEWEAF significantly suppressed the platelet-derived growth factor (PDGF)-BB-induced VSMC migration and proliferation as well the phosphorylation of mitogen-activated protein kinases (MAPKs) such as the p38 MAPK and extracellular signal-regulated kinase (ERK) 1/2...
August 1, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28776225/forced-expression-of-vascular-endothelial-growth-factor-a-in-podocytes-decreases-mesangial-cell-numbers-and-attenuates-endothelial-cell-differentiation-in-the-mouse-glomerulus
#17
Masahiro Suyama, Yoichi Miyazaki, Taiji Matsusaka, Naoki Sugano, Hiroyuki Ueda, Tetsuya Kawamura, Makoto Ogura, Takashi Yokoo
BACKGROUND: Glomerular podocyte-derived vascular endothelial growth factor (VEGF) is indispensable for the migration and proliferation of glomerular endothelial cells. In contrast, podocyte-specific Vegf overexpression leads to the collapse of glomerular tufts; however, the mechanisms underlying this outcome have not yet been reported. METHODS: To further clarify the effects of elevated levels of Vegf expression on glomerular cells, we established a dual transgenic mouse line in which Vegf was exclusively and inducibly expressed in podocytes under the control of the "Tet-on system" (Podocin-rtTA/TetO-Vegf164 mice)...
August 3, 2017: Clinical and Experimental Nephrology
https://www.readbyqxmd.com/read/28775097/platelet-derived-growth-factor-receptor-alpha-pdgfr%C3%AE-and-ras-related-c3-botulinum-toxin-substrate-1-rac1-regulate-mechano-responsiveness-of-lung-fibroblasts
#18
Stephen E McGowan, Diann M McCoy
Platelet-derived growth factor (PDGF)-A, which only signals through PDGF-receptor-alpha (PDGFRα) is required for secondary alveolar septal formation. Although PDGFRα distinguishes mesenchymal progenitor cells during the saccular stage, PDGFRα-expressing alveolar cells persist through adulthood. PDGF-A sustains proliferation, limits apoptosis, and maintains alpha-smooth muscle actin (αSMA) containing alveolar cells, which congregate at the alveolar entry ring at postnatal day (P)12. PDGFRα-expressing, αSMA-containing, alveolar cells re-distribute in the elongating septum, suggesting that they migrate to the alveolar entry rings where mechanical tension is higher...
August 3, 2017: American Journal of Physiology. Lung Cellular and Molecular Physiology
https://www.readbyqxmd.com/read/28765945/platelet-rich-plasma-exhibits-beneficial-effects-for-rheumatoid-arthritis-mice-by-suppressing-inflammatory-factors
#19
Shichao Tong, Changqing Zhang, Ji Liu
Platelet-rich plasma (PRP) is a multifunctional blood product containing highly concentrated platelets, and various cell growth factors which promote cell proliferation and differentiation. PRP exhibited benefits in injurious articular cartilage repair and the removal of inflammatory factors in clinical studies. Rheumatoid arthritis (RA) is an autoimmune disease manifesting primarily as inflammatory arthritis, which is associated with notable morbidity in humans. In the present study, the therapeutic effects and primary mechanism of PRP on a type II collagen‑induced arthritis (CIA) mouse model was investigated...
July 27, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28763452/pathogen-reduction-through-additive-free-short-wave-uv-light-irradiation-retains-the-optimal-efficacy-of-human-platelet-lysate-for-the-expansion-of-human-bone-marrow-mesenchymal-stem-cells
#20
Sabrina Viau, Lucie Chabrand, Sandy Eap, Judith Lorant, Karl Rouger, Francis Goudaliez, Chryslain Sumian, Bruno Delorme
BACKGROUND: We recently developed and characterized a standardized and clinical grade human Platelet Lysate (hPL) that constitutes an advantageous substitute for fetal bovine serum (FBS) for human mesenchymal stem cell (hMSC) expansion required in cell therapy procedures, avoiding xenogenic risks (virological and immunological) and ethical issues. Because of the progressive use of pathogen-reduced (PR) labile blood components, and the requirement of ensuring the viral safety of raw materials for cell therapy products, we evaluated the impact of the novel procedure known as THERAFLEX UV-Platelets for pathogen reduction on hPL quality (growth factors content) and efficacy (as a medium supplement for hMSC expansion)...
2017: PloS One
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