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https://www.readbyqxmd.com/read/28817661/ouabain-affects-cell-migration-via-na-k-atpase-p130cas-and-via-nucleus-centrosome-association
#1
Young Ou, Chen Xuan Pan, Jeremy Zuo, Frans A van der Hoorn
Na,K-ATPase is a membrane protein that catalyzes ATP to maintain transmembrane sodium and potassium gradients. In addition, Na,K-ATPase also acts as a signal-transducing receptor for cardiotonic steroids such as ouabain and activates a number of signalling pathways. Several studies report that ouabain affects cell migration. Here we used ouabain at concentrations far below those required to block Na,K-ATPase pump activity and show that it significantly reduced RPE cell migration through two mechanisms. It causes dephosphorylation of a 130 kD protein, which we identify as p130cas...
2017: PloS One
https://www.readbyqxmd.com/read/28730470/dissecting-kinase-effector-signaling-using-the-raprtap-methodology
#2
Anne-Marie Ray, Jennifer E Klomp, Kerrie B Collins, Andrei V Karginov
Kinases are involved in a broad spectrum of cell behaviors. A single kinase can interact with different ligands each eliciting a specific cellular response. Dissecting downstream signaling pathways of kinases is a key step to understanding physiological and pathological cell process. However, directing kinase activity to specific substrates remains challenging. Here, we present a new tool to selectively activate a kinase in a specific protein complex in living cells. This technology uses a rapamycin-inducible kinase activation coupled to interaction with FKBP12-binding domain (FRB) tagged protein...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28723560/crkl-mediates-p110%C3%AE-dependent-pi3k-signaling-in-pten-deficient-cancer-cells
#3
Jing Zhang, Xueliang Gao, Fabienne Schmit, Guillaume Adelmant, Michael J Eck, Jarrod A Marto, Jean J Zhao, Thomas M Roberts
The p110β isoform of PI3K is preferentially activated in many tumors deficient in the phosphatase and tensin homolog (PTEN). However, the mechanism(s) linking PTEN loss to p110β activation remain(s) mysterious. Here, we identify CRKL as a member of the class of PI3Kβ-interacting proteins. Silencing CRKL expression in PTEN-null human cancer cells leads to a decrease in p110β-dependent PI3K signaling and cell proliferation. In contrast, CRKL depletion does not impair p110α-mediated signaling. Further study showed that CRKL binds to tyrosine-phosphorylated p130Cas in PTEN-null cancer cells...
July 18, 2017: Cell Reports
https://www.readbyqxmd.com/read/28700345/platelet-derived-growth-factor-c-promotes-human-melanoma-aggressiveness-through-activation-of-neuropilin-1
#4
Federica Ruffini, Lauretta Levati, Grazia Graziani, Simona Caporali, Maria Grazia Atzori, Stefania D'Atri, Pedro M Lacal
Despite recent progress in advanced melanoma therapy, identification of signalling pathways involved in melanoma switch from proliferative to invasive states is still crucial to uncover new therapeutic targets for improving the outcome of metastatic disease. Neuropilin-1 (NRP-1), a co-receptor for vascular endothelial growth factor-A (VEGF-A) tyrosine kinase receptors (VEGFRs), has been suggested to play a relevant role in melanoma progression. NRP-1 can be activated by VEGF-A also in the absence of VEGFRs, triggering specific signal transduction pathways (e...
June 27, 2017: Oncotarget
https://www.readbyqxmd.com/read/28687864/stressed-podocytes-mechanical-forces-sensors-signaling-and-response
#5
REVIEW
Karlhans Endlich, Felix Kliewe, Nicole Endlich
Increased glomerular capillary pressure (glomerular hypertension) and increased glomerular filtration rate (glomerular hyperfiltration) have been proven to cause glomerulosclerosis in animal models and are likely to be operative in patients. Since podocytes cover the glomerular basement membrane, they are exposed to tensile stress due to circumferential wall tension and to fluid shear stress arising from filtrate flow through the narrow filtration slits and through Bowman's space. In vitro evidence documents that podocytes respond to tensile stress as well as to fluid shear stress...
August 2017: Pflügers Archiv: European Journal of Physiology
https://www.readbyqxmd.com/read/28608180/montelukast-improves-the-changes-of-cytoskeletal-and-adaptor-proteins-of-human-podocytes-by-interleukin-13
#6
Tae-Sun Ha, Ja Ae Nam, Su-Bin Seong, Moin A Saleem, Se Jin Park, Jae Il Shin
OBJECTIVE AND DESIGN: Interleukin-13 (IL-13) has recently been reported to be a potential cytokine in the pathogenesis of minimal-change nephrotic syndrome (MCNS). However, the mechanistic insights associated with podocyte dysfunction mediated by IL-13-induced changes in various slit diaphragm (SD) and cytoskeletal molecules have not yet been shown in cultured human podocytes in vitro. MATERIALS: Human conditionally immortalized podocytes were used. TREATMENT: Podocytes were incubated with various concentrations of IL-13 during the indicated time periods (6, 12, and 24 h) and montelukast was administered with the dose of 0...
September 2017: Inflammation Research: Official Journal of the European Histamine Research Society ... [et Al.]
https://www.readbyqxmd.com/read/28442738/dysregulation-of-blimp1-transcriptional-repressor-unleashes-p130cas-erbb2-breast-cancer-invasion
#7
Marianna Sciortino, Maria Del Pilar Camacho-Leal, Francesca Orso, Elena Grassi, Andrea Costamagna, Paolo Provero, Wayne Tam, Emilia Turco, Paola Defilippi, Daniela Taverna, Sara Cabodi
ErbB2 overexpression is detected in approximately 20% of breast cancers and is correlated with poor survival. It was previously shown that the adaptor protein p130Cas/BCAR1 is a crucial mediator of ErbB2 transformation and that its overexpression confers invasive properties to ErbB2-positive human mammary epithelial cells. We herein prove, for the first time, that the transcriptional repressor Blimp1 is a novel mediator of p130Cas/ErbB2-mediated invasiveness. Indeed, high Blimp1 expression levels are detected in invasive p130Cas/ErbB2 cells and correlate with metastatic status in human breast cancer patients...
April 25, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28365595/a-mechanosensory-role-for-p130cas-fat
#8
(no author information available yet)
No abstract text is available yet for this article.
April 1, 2017: Journal of Cell Science
https://www.readbyqxmd.com/read/28337997/the-mir-24-3p-p130cas-a-novel-axis-regulating-the-migration-and-invasion-of-cancer-cells
#9
Hoin Kang, Jun Gi Rho, Chongtae Kim, Hyosun Tak, Heejin Lee, Eunbyul Ji, Sojin Ahn, A-Ri Shin, Hyun-Il Cho, Yun Hyun Huh, Woo Keun Song, Wook Kim, Eun Kyung Lee
MicroRNAs (miRNAs) are small non-coding RNAs that negatively regulate gene expression by suppressing translation or facilitating mRNA decay. Differential expression of miRNAs is involved in the pathogenesis of several diseases including cancer. Here, we investigated the role of-miR-24-3p as a downregulated miRNA in metastatic cancer. miR-24-3p was decreased in metastatic cancer and lower expression of miR-24-3p was related to poor survival of cancer patients. Consistently, ectopic expression of miR-24-3p suppressed the cell migration, invasion, and proliferation of MCF7, Hep3B, B16F10, SK-Hep1, and PC-3 cells by directly targeting p130Cas...
March 24, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28333195/genome-wide-genetic-analyses-highlight-mitogen-activated-protein-kinase-mapk-signaling-in-the-pathogenesis-of-endometriosis
#10
Outi Uimari, Nilufer Rahmioglu, Dale R Nyholt, Katy Vincent, Stacey A Missmer, Christian Becker, Andrew P Morris, Grant W Montgomery, Krina T Zondervan
Study question: Do genome-wide association study (GWAS) data for endometriosis provide insight into novel biological pathways associated with its pathogenesis? Summary answer: GWAS analysis uncovered multiple pathways that are statistically enriched for genetic association signals, analysis of Stage A disease highlighted a novel variant in MAP3K4, while top pathways significantly associated with all endometriosis and Stage A disease included several mitogen-activated protein kinase (MAPK)-related pathways...
April 1, 2017: Human Reproduction
https://www.readbyqxmd.com/read/28316141/dasatinib-inhibits-actin-fiber-reorganization-and-promotes-endothelial-cell-permeability-through-rhoa-rock-pathway
#11
Swapan K Dasgupta, Anhquyen Le, K Vinod Vijayan, Perumal Thiagarajan
Treatment with dasatinib, a tyrosine kinase inhibitor, is associated with edema, pleural effusion, and pulmonary edema. We investigated the effect of dasatinib on the barrier function of human microvascular endothelial cells-1 (HMEC-1) in vitro and in vivo. The permeability of HMEC-1 to fluorescein isothiocyante (FITC)-dextran increased in Transwell chambers within 5 min following the addition of therapeutic concentrations of dasatinib. The change in permeability was associated with increased activation of RhoA GTPase and its effector Rho-associated coiled-coil kinase 1(ROCK1)...
April 2017: Cancer Medicine
https://www.readbyqxmd.com/read/28223315/the-focal-adhesion-targeting-domain-of-p130cas-confers-a-mechanosensing-function
#12
Peta M Bradbury, Kylie Turner, Camilla Mitchell, Kaitlyn R Griffin, Shiloh Middlemiss, Loretta Lau, Rebecca Dagg, Elena Taran, Justin Cooper-White, Ben Fabry, Geraldine M O'Neill
Members of the Cas family of focal adhesion proteins contain a highly conserved C-terminal focal adhesion targeting (FAT) domain. To determine the role of the FAT domain in these proteins, we compared wild-type exogenous NEDD9 with a hybrid construct in which the NEDD9 FAT domain had been exchanged for the p130Cas (also known as BCAR1) FAT domain. Fluorescence recovery after photobleaching (FRAP) revealed significantly slowed exchange of the fusion protein at focal adhesions and significantly slower two-dimensional migration...
April 1, 2017: Journal of Cell Science
https://www.readbyqxmd.com/read/28007913/vascular-endothelial-growth-factor-vegf-promotes-assembly-of-the-p130cas-interactome-to-drive-endothelial-chemotactic-signaling-and-angiogenesis
#13
Ian M Evans, Susan A Kennedy, Ketevan Paliashvili, Tapesh Santra, Maiko Yamaji, Ruth C Lovering, Gary Britton, Paul Frankel, Walter Kolch, Ian C Zachary
p130Cas is a polyvalent adapter protein essential for cardiovascular development, and with a key role in cell movement. In order to identify the pathways by which p130Cas exerts its biological functions in endothelial cells we mapped the p130Cas interactome and its dynamic changes in response to VEGF using high-resolution mass spectrometry and reconstruction of protein interaction (PPI) networks with the aid of multiple PPI databases. VEGF enriched the p130Cas interactome in proteins involved in actin cytoskeletal dynamics and cell movement, including actin-binding proteins, small GTPases and regulators or binders of GTPases...
February 2017: Molecular & Cellular Proteomics: MCP
https://www.readbyqxmd.com/read/27885186/-p130cas-mediated-regulation-of-mechanical-functions-of-cells
#14
Yasuhiro Sawada, Hiroaki Hirata
It is 10 years since we reported Cas as a cell mechano-sensor that converts stretching force to a biochemical signal. While we have been looking into the mechanism of how Cas molecules are extended, it appears that the source of stretching force does not derive from actomyosin contraction, but originates from actin polymerization. Furthermore, we have found that phosphorylated Cas links actomyosin contraction to cell migration by tensin 1-mediated association with inwardly moving actin filaments. Collectively, Cas serves as a force sensor at the cell leading edges as well as a part of force transmission machinery, i...
2016: Clinical Calcium
https://www.readbyqxmd.com/read/27854239/kshv-entry-and-trafficking-in-target-cells-hijacking-of-cell-signal-pathways-actin-and-membrane-dynamics
#15
REVIEW
Binod Kumar, Bala Chandran
Kaposi's sarcoma associated herpesvirus (KSHV) is etiologically associated with human endothelial cell hyperplastic Kaposi's sarcoma and B-cell primary effusion lymphoma. KSHV infection of adherent endothelial and fibroblast cells are used as in vitro models for infection and KSHV enters these cells by host membrane bleb and actin mediated macropinocytosis or clathrin endocytosis pathways, respectively. Infection in endothelial and fibroblast cells is initiated by the interactions between multiple viral envelope glycoproteins and cell surface associated heparan sulfate (HS), integrins (α3β1, αVβ3 and αVβ5), and EphA2 receptor tyrosine kinase (EphA2R)...
November 14, 2016: Viruses
https://www.readbyqxmd.com/read/27764233/escrt-i-protein-tsg101-plays-a-role-in-the-post-macropinocytic-trafficking-and-infection-of-endothelial-cells-by-kaposi-s-sarcoma-associated-herpesvirus
#16
Binod Kumar, Dipanjan Dutta, Jawed Iqbal, Mairaj Ahmed Ansari, Arunava Roy, Leela Chikoti, Gina Pisano, Mohanan Valiya Veettil, Bala Chandran
Kaposi's sarcoma-associated herpesvirus (KSHV) binding to the endothelial cell surface heparan sulfate is followed by sequential interactions with α3β1, αVβ3 and αVβ5 integrins and Ephrin A2 receptor tyrosine kinase (EphA2R). These interactions activate host cell pre-existing FAK, Src, PI3-K and RhoGTPase signaling cascades, c-Cbl mediated ubiquitination of receptors, recruitment of CIB1, p130Cas and Crk adaptor molecules, and membrane bleb formation leading to lipid raft dependent macropinocytosis of KSHV into human microvascular dermal endothelial (HMVEC-d) cells...
October 2016: PLoS Pathogens
https://www.readbyqxmd.com/read/27718170/modulation-of-cutaneous-extracellular-collagen-contraction-by-phosphorylation-status-of-p130cas
#17
Mayumi Takeya, Yuushi Okumura, Takeshi Nikawa
Skin can respond to various types of internal and/or external mechanostimuli, such as excessive tension caused by body growth or decompression due to weight loss, which significantly affect skin morphology. Mechanosensors, including p130Cas, are reported to play a role in deformation and subsequent recovery of various tissues including skeletal muscles and blood vessels. However, the role of mechanotransduction via p130Cas in the regulation of skin size remains unclear. In this report, p130Cas activation was manipulated using a fibroblast-embedded collagen gel model or mouse skin contraction model...
September 2017: Journal of Physiological Sciences: JPS
https://www.readbyqxmd.com/read/27713116/prostate-specific-membrane-antigen-psma-assembles-a-macromolecular-complex-regulating-growth-and-survival-of-prostate-cancer-cells-in-vitro-and-correlating-with-progression-in-vivo
#18
Maria Elisa Perico, Silvia Grasso, Matteo Brunelli, Guido Martignoni, Enrico Munari, Enrico Moiso, Giulio Fracasso, Tiziana Cestari, Hassan Y Naim, Vincenzo Bronte, Marco Colombatti, Dunia Ramarli
The expression of Prostate Specific-Membrane Antigen (PSMA) increases in high-grade prostate carcinoma envisaging a role in growth and progression. We show here that clustering PSMA at LNCaP or PC3-PSMA cell membrane activates AKT and MAPK pathways thus promoting proliferation and survival. PSMA activity was dependent on the assembly of a macromolecular complex including filamin A, beta1 integrin, p130CAS, c-Src and EGFR. Within this complex beta1 integrin became activated thereby inducing a c-Src-dependent EGFR phosphorylation at Y1086 and Y1173 EGF-independent residues...
November 8, 2016: Oncotarget
https://www.readbyqxmd.com/read/27669437/the-focal-adhesion-associated-proteins-dock5-and-git2-comprise-a-rheostat-in-control-of-epithelial-invasion
#19
S R Frank, C P Köllmann, J F van Lidth de Jeude, J R Thiagarajah, L H Engelholm, M Frödin, S H Hansen
DOCK proteins are guanine nucleotide exchange factors for Rac and Cdc42 GTPases. DOCK1 is the founding member of the family and acts downstream of integrins via the canonical Crk-p130Cas complex to activate Rac GTPases in numerous contexts. In contrast, DOCK5, which possesses the greatest similarity to DOCK1, remains sparingly studied. Here we establish that DOCK5 has a non-redundant role in regulating motile and invasive capacities of epithelial cells. DOCK1 is constitutively associated with sites of integrin attachment termed focal adhesions (FAs)...
March 30, 2017: Oncogene
https://www.readbyqxmd.com/read/27622508/ezrin-is-associated-with-disease-progression-in-ovarian-carcinoma
#20
Vered Horwitz, Ben Davidson, Dganit Stern, Claes G Tropé, Tali Tavor Re'em, Reuven Reich
OBJECTIVE: Ezrin and p130Cas are structural proteins with an important role in signaling pathways and have been shown to promote cancer dissemination. We previously reported on overexpression of both ezrin and p130Cas in breast carcinoma effusions compared to primary carcinomas. Since ovarian and breast carcinomas share the ability to disseminate by forming malignant effusions, we sought to study the role of these molecules in ovarian carcinoma (OC). METHODS: OC cell lines were cultured in two different 3-dimensional conditions, on alginate scaffolds and as spheroids, which served as models for solid tumor and malignant effusions, respectively...
2016: PloS One
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