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https://www.readbyqxmd.com/read/28102737/platelet-microvesicles-in-health-and-disease
#1
Imene Melki, Nicolas Tessandier, Anne Zufferey, Eric Boilard
Interest in cell-derived extracellular vesicles and their physiological and pathological implications is constantly growing. Microvesicles, also known as microparticles, are small extracellular vesicles released by cells in response to activation or apoptosis. Among the different microvesicles present in the blood of healthy individuals, platelet-derived microvesicles (PMVs) are the most abundant. Their characterization has revealed a heterogeneous cargo that includes a set of adhesion molecules. Similarly to platelets, PMVs are also involved in thrombosis through support of the coagulation cascade...
January 19, 2017: Platelets
https://www.readbyqxmd.com/read/28101628/rho-kinase-inhibitor-fasudil-mitigates-high-cholesterol-diet-induced-hypercholesterolemia-and-vascular-damage
#2
Nibrass Taher Abdali, Awny H Yaseen, Eman Said, Tarek M Ibrahim
The current study was designed to investigate the potential beneficial therapeutic outcome of Rho kinase inhibitor (fasudil) against hypercholesterolemia-induced myocardial and vascular injury in rabbits together with diet modification. Sixteen male rabbits were randomly divided into four groups: normal control group which received standard rabbit chow, hypercholesterolemic control group, and treated groups which received cholesterol-rich rabbit chow (1.5% cholesterol) for 8 weeks. Treated groups received either fasudil (100 mg/kg/day) or rosuvastatin (2...
January 18, 2017: Naunyn-Schmiedeberg's Archives of Pharmacology
https://www.readbyqxmd.com/read/28101213/osteopontin-improves-adhesion-and-migration-of-human-primary-renal-cortical-epithelial-cells-during-wound-healing
#3
Jinfeng Wu, Zuolin Wang
The aim of the present study was to investigate the effect of osteopontin (OPN) on adhesion and migration in human primary renal cortical epithelial cells during wound healing and Transwell assays. MTT assay was used to examine the cell viability and western blot analysis was used to examine the expression of cytoskeletal proteins and cell adhesion molecules. The results showed that overexpression of OPN had positive effects on the viability, proliferation, adhesion and migration of the human primary renal cortical epithelial cells...
December 2016: Oncology Letters
https://www.readbyqxmd.com/read/28098905/cripto-1-promotes-epithelial-mesenchymal-transition-in-prostate-cancer-via-wnt-%C3%AE-catenin-signaling
#4
Yan Liu, Zhenbang Qin, Kuo Yang, Ranlu Liu, Yong Xu
The Cripto-1 (CR-1) derived EGF-CFC family was overexpressed in tumor development enhancing proliferation, epithelial-mesenchymal transition (EMT) and migration of tumor cells. However, correlation between CR-1 and prostate cancer (PCa) remains still unclear. In the present study, we proved that CR-1 was expressed in PCa and its function was in the progression of PCa. Compared with benign prostatic hyperplasia (BPH) tissues, we confirmed that PCa tissues had high expression of CR-1 by immunohistochemistry and statistical data showed that CR-1 promoted properties of EMT in PCa tissues, including the downregulation of the cell adhesion molecules β-catenin (membrane) and E-cadherin while upregulating transcription factors β-catenin...
January 17, 2017: Oncology Reports
https://www.readbyqxmd.com/read/28098888/hclock-induction-by-hypoxia-promotes-inflammatory-responses-by-activating-the-nf%C3%A2-%C3%AE%C2%BAb-pathway
#5
Xiao Tang, Daqiao Guo, Changpo Lin, Zhenyu Shi, Ruizhe Qian, Weiguo Fu, Jianjun Liu, Xu Li, Longhua Fan
The expression and secretion of infla-mmation‑associated cytokines are induced by hypoxia. Circadian locomotor output cycles protein kaput (CLOCK) has previously been shown to activate the nuclear factor‑κB (NF‑κB) pathway, which is a key transcription factor during hypoxia. The present study evaluated the role of the NF‑κB pathway in the CLOCK‑induced inflammatory response. Under hypoxic conditions, the expression levels of NF‑κB and proinflammatory cytokines, including interleukin (IL)‑1, IL‑1β, IL‑6, intercellular adhesion molecule 1, cyclooxygenase 2 and tumor necrosis factor alpha, were significantly increased compared with under control conditions...
January 17, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28098764/iqgap1-in-podosomes-invadosomes-is-involved-in-the-progression-of-glioblastoma-multiforme-depending-on-the-tumor-status
#6
Deborah Rotoli, Natalia Dolores Pérez-Rodríguez, Manuel Morales, María Del Carmen Maeso, Julio Ávila, Ali Mobasheri, Pablo Martín-Vasallo
Glioblastoma multiforme (GBM) is the most frequent and aggressive primary brain tumor. GBM is formed by a very heterogeneous astrocyte population, neurons, neovascularization and infiltrating myeloid cells (microglia and monocyte derived macrophages). The IQGAP1 scaffold protein interacts with components of the cytoskeleton, cell adhesion molecules, and several signaling molecules to regulate cell morphology and motility, cell cycle and other cellular functions. IQGAP1 overexpression and delocalization has been observed in several tumors, suggesting a role for this protein in cell proliferation, transformation and invasion...
January 13, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28098193/non-pathogenic-tissue-resident-cd8-t-cells-uniquely-accumulate-in-the-brains-of-lupus-prone-mice
#7
Peter A Morawski, Chen-Feng Qi, Silvia Bolland
Severe lupus often includes psychiatric and neurological sequelae, although the cellular contributors to CNS disease remain poorly defined. Using intravascular staining to discriminate tissue-localized from blood-borne cells, we find substantial accumulation of CD8(+) T cells relative to other lymphocytes in brain tissue, which correlates with lupus disease and limited neuropathology. This is in contrast to all other affected organs, where infiltrating CD4(+) cells are predominant. Brain-infiltrating CD8(+) T cells represent an activated subset of those found in the periphery, having a resident-memory phenotype (CD69(+)CD122(-)PD1(+)CD44(+)CD62L(-)) and expressing adhesion molecules (VLA-4(+)LFA-1(+)) complementary to activated brain endothelium...
January 18, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28097464/cdc42-promotes-schwann-cell-proliferation-and-migration-through-wnt-%C3%AE-catenin-and-p38-mapk-signaling-pathway-after-sciatic-nerve-injury
#8
Bin Han, Jun-Ying Zhao, Wu-Tao Wang, Zheng-Wei Li, Ai-Ping He, Xiao-Yang Song
Schwann cells (SCs) are unique glial cells in the peripheral nerve and may secrete multiple neurotrophic factors, adhesion molecules, extracellular matrix molecules to form the microenvironment of peripheral nerve regeneration, guiding and supporting nerve proliferation and migration. Cdc42 plays an important regulatory role in dynamic changes of the cytoskeleton. However, there is a little study referred to regulation and mechanism of Cdc42 on glial cells after peripheral nerve injury. The present study investigated the role of Cdc42 in the proliferation and migration of SCs after sciatic nerve injury...
January 17, 2017: Neurochemical Research
https://www.readbyqxmd.com/read/28097236/lung-vaso-occlusion-in-sickle-cell-disease-mediated-by-arteriolar-neutrophil-platelet-microemboli
#9
Margaret F Bennewitz, Maritza A Jimenez, Ravi Vats, Egemen Tutuncuoglu, Jude Jonassaint, Gregory J Kato, Mark T Gladwin, Prithu Sundd
In patients with sickle cell disease (SCD), the polymerization of intraerythrocytic hemoglobin S promotes downstream vaso-occlusive events in the microvasculature. While vaso-occlusion is known to occur in the lung, often in the context of systemic vaso-occlusive crisis and the acute chest syndrome, the pathophysiological mechanisms that incite lung injury are unknown. We used intravital microscopy of the lung in transgenic humanized SCD mice to monitor acute vaso-occlusive events following an acute dose of systemic lipopolysaccharide sufficient to trigger events in SCD but not control mice...
January 12, 2017: JCI Insight
https://www.readbyqxmd.com/read/28096537/jak2-v617f-activates-%C3%AE-1-integrin-mediated-adhesion-of-granulocytes-to-vascular-cell-adhesion-molecule-1-vcam1
#10
N Gupta, B Edelmann, T M Schnoeder, F C Saalfeld, D Wolleschak, S Kliche, B Schraven, F H Heidel, T Fischer
Leukemia accepted article preview online, 18 January 2017. doi:10.1038/leu.2017.26.
January 18, 2017: Leukemia: Official Journal of the Leukemia Society of America, Leukemia Research Fund, U.K
https://www.readbyqxmd.com/read/28096336/%C3%AE-catenin-haploinsufficiency-promotes-mammary-tumorigenesis-in-an-erbb2-positive-basal-breast-cancer-model
#11
Bui Tung, Babette Schade, Robert D Cardiff, Olulanu H Aina, Virginie Sanguin-Gendreau, William J Muller
Aberrant activation of β-catenin through its activity as a transcription factor has been observed in a large proportion of human malignancies. Despite the improved understanding of the β-catenin signaling pathway over the past three decades, attempts to develop therapies targeting β-catenin remain challenging, and none of these targeted therapies have advanced to the clinic. In this study, we show that part of the challenge in antagonizing β-catenin is caused by its dual functionality as a cell adhesion molecule and a signaling molecule...
January 17, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28096299/exosomes-from-eosinophils-autoregulate-and-promote-eosinophil-functions
#12
José Antonio Cañas, Beatriz Sastre, Carla Mazzeo, Mar Fernández-Nieto, José Manuel Rodrigo-Muñoz, Andrés González-Guerra, Manuel Izquierdo, Pilar Barranco, Santiago Quirce, Joaquín Sastre, Victoria Del Pozo
Eosinophils are able to secrete exosomes that have an undefined role in asthma pathogenesis. We hypothesized that exosomes released by eosinophils autoregulate and promote eosinophil function. Eosinophils of patients with asthma (n = 58) and healthy volunteers (n = 16) were purified from peripheral blood, and exosomes were isolated and quantified from eosinophils of the asthmatic and healthy populations. Apoptosis, adhesion, adhesion molecules expression, and migration assays were performed with eosinophils in the presence or absence of exosomes from healthy and asthmatic individuals...
January 17, 2017: Journal of Leukocyte Biology
https://www.readbyqxmd.com/read/28096264/adherens-junctions-on-the-move-membrane-trafficking-of-e-cadherin
#13
Lena Brüser, Sven Bogdan
Cadherin-based adherens junctions are conserved structures that mediate epithelial cell-cell adhesion in invertebrates and vertebrates. Despite their pivotal function in epithelial integrity, adherens junctions show a remarkable plasticity that is a prerequisite for tissue architecture and morphogenesis. Epithelial cadherin (E-cadherin) is continuously turned over and undergoes cycles of endocytosis, sorting and recycling back to the plasma membrane. Mammalian cell culture and genetically tractable model systems such as Drosophila have revealed conserved, but also distinct, mechanisms in the regulation of E-cadherin membrane trafficking...
January 17, 2017: Cold Spring Harbor Perspectives in Biology
https://www.readbyqxmd.com/read/28096092/initiation-of-acute-graft-versus-host-disease-by-angiogenesis
#14
Katarina Riesner, Yu Shi, Angela Jacobi, Martin Kraeter, Martina Kalupa, Aleixandria McGearey, Sarah Mertlitz, Steffen Cordes, Jens-Florian Schrezenmeier, Jörg Mengwasser, Sabine Westphal, Daniel Perez-Hernandez, Clemens Schmitt, Gunnar Dittmar, Jochen Guck, Olaf Penack
The inhibition of inflammation-associated angiogenesis ameliorates inflammatory diseases by reducing the recruitment of tissue infiltrating leukocytes. However, it is not known if angiogenesis has an active role during the initiation of inflammation or if it is merely a secondary effect occurring in response to stimuli by tissue infiltrating leukocytes. Here we show that angiogenesis precedes leukocyte infiltration in experimental models of inflammatory bowel disease and acute graft-versus-host disease (GVHD)...
January 17, 2017: Blood
https://www.readbyqxmd.com/read/28095646/a-frog-s-view-of-ephrinb-signaling
#15
REVIEW
Yoo-Seok Hwang, Ira O Daar
Cell-cell and cell-substrate adhesion are essential to the proper formation and maintenance of tissue patterns during development, and deregulation of these processes can lead to invasion and metastasis of cancer cells. Cell surface adhesion and signaling molecules are key players in both normal development and cancer progression. One set of cell surface proteins, the Eph receptor tyrosine kinases and their membrane-bound ligands, ephrins, are significant regulators of these processes. During embryonic development, the Eph/ephrin signaling system is involved in cell-cell contact events that result in cell sorting and boundary formation between receptor and ligand bearing cells...
January 17, 2017: Genesis: the Journal of Genetics and Development
https://www.readbyqxmd.com/read/28095483/association-between-nf-%C3%AE%C2%BAb-pathway-gene-variants-and-sicam1-levels-in-taiwanese
#16
Semon Wu, Ming-Sheng Teng, Leay-Kiaw Er, Wan-Yi Hsiao, Lung-An Hsu, Ching-Hua Yeh, Jeng-Feng Lin, Yi-Ying Lin, Cheng-Wen Su, Yu-Lin Ko
Intercellular adhesion molecule-1 (ICAM1) is crucial to the development and progression of atherosclerosis. Recent genome-wide association studies (GWAS) have revealed that single nucleotide polymorphisms (SNPs) in two of the nuclear factor-κB (NF-κB) pathway genes, NFKBIK and RELA, are associated with soluble ICAM1 (sICAM1) levels. However, neither of these two gene variants is found in the Asian populations. This study aimed to elucidate whether other candidate gene variants involved in the NF-κB pathway may be associated with sICAM1 levels in Taiwanese...
2017: PloS One
https://www.readbyqxmd.com/read/28094782/cocaine-enhances-dc-to-t-cell-hiv-1-transmission-by-activating-dc-sign-larg-lsp1-complex-and-facilitating-infectious-synapse-formation
#17
Anil Prasad, Rutuja Kulkarni, Shuxian Jiang, Jerome E Groopman
DC-SIGN is a dendritic cell surface structure which participates in binding and transmission of HIV-1. Here, for the first time we demonstrate that cocaine induces over expression of DC-SIGN and significantly enhances virus transfer from DCs to T-cells by increasing the binding and internalization of HIV-1 in DCs. We found that cocaine activates a DC-SIGN mediated 'signalosome' complex by enhancing its association with LARG and LSP1. Further, LARG was observed to participate in DC-SIGN mediated internalization of HIV-1 in DCs...
January 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28094766/matriptase-mediated-cleavage-of-epcam-destabilizes-claudins-and-dysregulates-intestinal-epithelial-homeostasis
#18
Chuan-Jin Wu, Xu Feng, Michael Lu, Sohshi Morimura, Mark C Udey
Congenital tufting enteropathy (CTE) is a severe autosomal recessive human diarrheal disorder with characteristic intestinal epithelial dysplasia. CTE can be caused by mutations in genes encoding EpCAM, a putative adhesion molecule, and HAI-2, a cell surface protease inhibitor. A similar phenotype occurs in mice whose intestinal epithelial cells (IECs) fail to express the tight junction-associated protein claudin-7. EpCAM stabilizes claudin-7 in IECs, and HAI-2 regulates the cell surface serine protease matriptase, a known modifier of intestinal epithelial physiology...
January 17, 2017: Journal of Clinical Investigation
https://www.readbyqxmd.com/read/28094605/multiple-protocadherins-are-expressed-in-brain-microvascular-endothelial-cells-and-might-play-a-role-in-tight-junction-protein-regulation
#19
Christina Dilling, Norbert Roewer, Carola Y Förster, Malgorzata Burek
Protocadherins (Pcdhs) are a large family of cadherin-related molecules. They play a role in cell adhesion, cellular interactions, and development of the central nervous system. However, their expression and role in endothelial cells has not yet been characterized. Here, we examined the expression of selected clustered Pcdhs in endothelial cells from several vascular beds. We analyzed human and mouse brain microvascular endothelial cell (BMEC) lines and primary cells, mouse myocardial microvascular endothelial cell line, and human umbilical vein endothelial cells...
January 1, 2017: Journal of Cerebral Blood Flow and Metabolism
https://www.readbyqxmd.com/read/28093267/interleukin-6-induces-cell-proliferation-of-clear-cell-renal-cell-carcinoma-by-suppressing-hepacam-via-the-stat3-dependent-up-regulation-of-dnmt1-or-dnmt3b
#20
Zhen Quan, Yunfeng He, Chunli Luo, Yang Xia, Yan Zhao, Nanjing Liu, Xiaohou Wu
Interleukin 6 (IL-6), a tumor promoting cytokine, has been largely implicated in the development of renal cell carcinoma (RCC). Hepatocyte cell adhesion molecule (hepaCAM) is a novel tumor suppressor, which is lost or down-regulated in many cancer types including RCC. In the present study, we intensively investigated the connection between IL-6 and hepaCAM in RCC. Our analysis of RCC tissues, adjacent tissues and paired serum samples from RCC patients revealed that IL-6 was elevated in patient serum and RCC tissue, whereas hepaCAM was completely lost or significantly down-regulated...
January 13, 2017: Cellular Signalling
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