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https://www.readbyqxmd.com/read/29348482/egfr-activation-triggers-cellular-hypertrophy-and-lysosomal-disease-in-naglu-depleted-cardiomyoblasts-mimicking-the-hallmarks-of-mucopolysaccharidosis-iiib
#1
Valeria De Pasquale, Antonio Pezone, Patrizia Sarogni, Alfonso Tramontano, Gabriele Giacomo Schiattarella, Vittorio Enrico Avvedimento, Simona Paladino, Luigi Michele Pavone
Mucopolysaccharidosis (MPS) IIIB is an inherited lysosomal storage disease caused by the deficiency of the enzyme α-N-acetylglucosaminidase (NAGLU) required for heparan sulfate (HS) degradation. The defective lysosomal clearance of undigested HS results in dysfunction of multiple tissues and organs. We recently demonstrated that the murine model of MPS IIIB develops cardiac disease, valvular abnormalities, and ultimately heart failure. To address the molecular mechanisms governing cardiac dysfunctions in MPS IIIB, we generated a model of the disease by silencing NAGLU gene expression in H9C2 rat cardiomyoblasts...
January 18, 2018: Cell Death & Disease
https://www.readbyqxmd.com/read/29348417/identification-of-a-membrane-less-compartment-regulating-invadosome-function-and-motility
#2
Kristyna Sala, Andrea Raimondi, Diletta Tonoli, Carlo Tacchetti, Ivan de Curtis
Depletion of liprin-α1, ERC1 or LL5 scaffolds inhibits extracellular matrix degradation by invasive cells. These proteins co-accumulate near invadosomes in NIH-Src cells, identifying a novel invadosome-associated compartment distinct from the core and adhesion ring of invadosomes. Depletion of either protein perturbs the organization of invadosomes without influencing the recruitment of MT1-MMP metalloprotease. Liprin-α1 is not required for de novo formation of invadosomes after their disassembly by microtubules and Src inhibitors, while its depletion inhibits invadosome motility, thus affecting matrix degradation...
January 18, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29348189/cancer-stem-cell-phenotypes-in-er-breast-cancer-models-are-promoted-by-pelp1-aib1-complexes
#3
Thu H Truong, Hsiangyu Hu, Nuri A Temiz, Kyla Hagen, Brian J Girard, Nicholas J Brady, Kathryn L Schwertfeger, Carol A Lange, Julie H Ostrander
Proline, glutamic acid, and leucine rich protein 1 (PELP1) is overexpressed in approximately 80% of invasive breast tumors. PELP1 dynamically shuttles between the nucleus and cytoplasm, but is primarily nuclear in normal breast tissue. However, altered localization of PELP1 to the cytoplasm is an oncogenic event that promotes breast cancer initiation and progression. Herein, interacting partners unique to cytoplasmic PELP1 and the mechanisms by which these interactions promote oncogenic PELP1 signaling were sought...
January 18, 2018: Molecular Cancer Research: MCR
https://www.readbyqxmd.com/read/29345428/traf3-regulation-of-inhibitory-signaling-pathways-in-b-and-t-lymphocytes-by-kinase-and-phosphatase-localization
#4
REVIEW
Alicia M Wallis, Gail A Bishop
This brief review presents current understanding of how the signaling adapter protein TRAF3 can both induce and block inhibitory signaling pathways in B and T lymphocytes, via association with kinases and phosphatases, and subsequent regulation of their localization within the cell. In B lymphocytes, signaling through the interleukin 6 receptor (IL-6R) induces association of TRAF3 with IL-6R-associated JAK1, to which TRAF3 recruits the phosphatase PTPN22 (protein tyrosine phosphatase number 22) to dephosphorylate JAK1 and STAT3, inhibiting IL-6R signaling...
January 17, 2018: Journal of Leukocyte Biology
https://www.readbyqxmd.com/read/29345355/effects-of-antioxidants-on-apoptosis-induced-by-dasatinib-and-nilotinib-in-k562-cells
#5
Sara Damiano, Serena Montagnaro, Maria Valeria Puzio, Lorella Severino, Ugo Pagnini, Marcella Barbarino, Daniele Cesari, Antonio Giordano, Salvatore Florio, Roberto Ciarcia
In clinical practice for the treatment of chronic myeloid leukemia, second generation of tyrosine kinase inhibitors such as Nilotinib (NIL) specific and potent inhibitor of the BCR/ABL kinase and Dasatinib (DAS) a inhibitor of BCR/ABL and Src family kinase were developed to clinically overcome imatinib resistance. In this study we wanted to test the ability of some antioxidants such Resveratrol (RES) or a new recombinant mitochondrial manganese containing superoxide dismutase (rMnSOD) or δ-tocotrienol (δ-TOCO) to interact with DAS and NIL on viability, reactive oxygen species (ROS) production, lipid peroxidation and apoptosis...
January 18, 2018: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/29345291/microrna-1271-functions-as-a-metastasis-and-epithelial-mesenchymal-transition-inhibitor-in-human-hcc-by-targeting-the-ptp4a1-c-src-axis
#6
Chao Li, Yezhen Jiang, Runchen Miao, Kai Qu, Jingyao Zhang, Chang Liu
MicroRNAs (miRNAs or miRs) have been shown to regulate hepatocellular carcinoma (HCC) metastasis. In the present study, we focused on the functions of miR-1271 in HCC metastasis. The downregulation of miR-1271 was found to be associated with to venous infiltration, an advanced TNM stage (III+IV stage) and a shorter survival time. Our in vitro and in vivo data demonstrated that miR-1271 prevented HCC cell migration and invasion, as well as the formation of lung metastatic clusters. In addition, miR-1271 was demonstrated to markedly inhibit the epithelial-mesenchymal transition (EMT) of HCC cells...
February 2018: International Journal of Oncology
https://www.readbyqxmd.com/read/29343154/dasatinib-induced-pulmonary-arterial-hypertension-a-rare-late-complication
#7
Uroosa Ibrahim, Amina Saqib, Vidhya Dhar, Marcel Odaimi
Dasatinib is a dual Src/Abl tyrosine kinase inhibitor approved for frontline and second line treatment of chronic phase chronic myelogenous leukemia. Pulmonary arterial hypertension is defined by an increase in mean pulmonary arterial pressure >25 mmHg at rest. Dasatinib-induced pulmonary hypertension has been reported in less than 1% of patients on chronic dasatinib treatment for chronic myelogenous leukemia. The pulmonary arterial hypertension from dasatinib may be categorized as either group 1 (drug-induced) or group 5 based on various mechanisms that may be involved including the pathogenesis of the disease process of chronic myelogenous leukemia...
January 1, 2018: Journal of Oncology Pharmacy Practice
https://www.readbyqxmd.com/read/29340103/anti-neoplastic-drugs-increase-caveolin-1-dependent-migration-invasion-and-metastasis-of-cancer-cells
#8
Natalia I Díaz-Valdivia, Claudia C Calderón, Jorge E Díaz, Lorena Lobos-González, Hugo Sepulveda, Rina J Ortíz, Samuel Martinez, Veronica Silva, Horacio J Maldonado, Patricio Silva, Sergio Wehinger, Verónica A Burzio, Vicente A Torres, Martín Montecino, Lisette Leyton, Andrew F G Quest
Expression of the scaffolding protein Caveolin-1 (CAV1) enhances migration and invasion of metastatic cancer cells. Yet, CAV1 also functions as a tumor suppressor in early stages of cancer, where expression is suppressed by epigenetic mechanisms. Thus, we sought to identify stimuli/mechanisms that revert epigenetic CAV1 silencing in cancer cells and evaluate how this affects their metastatic potential. We reasoned that restricted tissue availability of anti-neoplastic drugs during chemotherapy might expose cancer cells to sub-therapeutic concentrations, which activate signaling pathways and the expression of CAV1 to favor the acquisition of more aggressive traits...
December 19, 2017: Oncotarget
https://www.readbyqxmd.com/read/29340070/a-novel-orally-available-syk-src-jak2-inhibitor-sklb-850-showed-potent-anti-tumor-activities-in-b-cell-lymphoma-bcl-models
#9
Nannan Zhang, Guo Zhang, Ning Liu, Wanting Lin, Sen Ji, Mingwu Zheng, Kai Chen, Xiao Liang, Guobo Li, Yu Ma, Jun Zhu, Ting Niu, Lin-Li Li, Jiong Li, Yu-Quan Wei, Sheng-Yong Yang
B cell lymphoma (BCL) is the most frequently diagnosed type of non-Hodgkin lymphoma (NHL), and accounts for about 4% of all cancers in the USA. Kinases spleen tyrosine kinase (Syk), Src, and Janus kinase 2 (JAK2) have been thought as potential targets for the treatment of BCL. We have recently developed a multikinase inhibitor, SKLB-850, which potently inhibits Syk, Src, and JAK2. The aim of this study is to investigate the anti-BCL activities and mechanisms of action of SKLB-850 both in vitro and in vivo. Our results showed that SKLB-850 significantly inhibited BCL cell proliferation, and induced apoptosis of BCL cells...
December 19, 2017: Oncotarget
https://www.readbyqxmd.com/read/29334406/dasatinib-induced-pulmonary-arterial-hypertension
#10
REVIEW
Nurgül Özgür Yurttaş, Ahmet Emre Eşkazan
Drug-induced (Group 1) pulmonary hypertension (PH) is an important subgroup of PH involving dasatinib as a likely related agent, which is a second-generation tyrosine kinase inhibitor (TKI), that is used in the treatment of chronic myeloid leukemia (CML). The mechanism of dasatinib-induced pulmonary arterial hypertension (PAH) is unclear. However, the occurence of PAH at a late onset in CML patients suggests a chronic pathological mechanism with an insidious onset rather than an acute inflammatory or cardiac etiology...
January 15, 2018: British Journal of Clinical Pharmacology
https://www.readbyqxmd.com/read/29330344/parathyroid-hormone-related-protein-exhibits-antioxidant-features-in-osteoblastic-cells-through-its-n-terminal-and-osteostatin-domains
#11
S Portal-Núñez, J A Ardura, D Lozano, I Martínez de Toda, M De la Fuente, G Herrero-Beaumont, R Largo, P Esbrit
OBJECTIVES: Oxidative stress plays a major role in the onset and progression of involutional osteoporosis. However, classical antioxidants fail to restore osteoblast function. Interestingly, the bone anabolism of parathyroid hormone (PTH) has been shown to be associated with its ability to counteract oxidative stress in osteoblasts. The PTH counterpart in bone, which is the PTH-related protein (PTHrP), displays osteogenic actions through both its N-terminal PTH-like region and the C-terminal domain...
January 2018: Bone & Joint Research
https://www.readbyqxmd.com/read/29329077/nano-hydroxyapatite-blasted-titanium-surface-creates-a-biointerface-able-to-govern-src-dependent-osteoblast-metabolism-as-prerequisite-to-ecm-remodeling
#12
Célio J C Fernandes, Fábio Bezerra, Marcel R Ferreira, Amanda F C Andrade, Thais Silva Pinto, Willian F Zambuzzi
Over the last several years, we have focused on the importance of intracellular signaling pathways in dynamically governing the biointerface between pre-osteoblast and surface of biomaterial. Thus, this study investigates the molecular hallmarks involved in the pre-osteoblast relationship with different topography considering Machined (Mc), Dual Acid-Etching (DAE), and nano hydroxyapatite-blasted (nHA) groups. There was substantial differences in topography of titanium surface, considering Atomic Force Microscopy and water contact angle (Mc = 81...
December 28, 2017: Colloids and Surfaces. B, Biointerfaces
https://www.readbyqxmd.com/read/29318780/the-synergistic-role-of-atp-dependent-drug-efflux-pump-and-focal-adhesion-signaling-pathways-in-vinorelbine-resistance-in-lung-cancer
#13
Takao Nakanishi, Toshi Menju, Shigeto Nishikawa, Koji Takahashi, Ryo Miyata, Kei Shikuma, Terumasa Sowa, Naoto Imamura, Masatsugu Hamaji, Hideki Motoyama, Kyoko Hijiya, Akihiro Aoyama, Toshihiko Sato, Toyofumi F Chen-Yoshikawa, Makoto Sonobe, Hiroshi Date
The vinorelbine (VRB) plus cisplatin regimen is widely used to treat non-small cell lung cancer (NSCLC), but its cure rate is poor. Drug resistance is the primary driver of chemotherapeutic failure, and the causes of resistance remain unclear. By focusing on the focal adhesion (FA) pathway, we have highlighted a signaling pathway that promotes VRB resistance in lung cancer cells. First, we established VRB-resistant (VR) lung cancer cells (NCI-H1299 and A549) and examined its transcriptional changes, protein expressions, and activations...
January 10, 2018: Cancer Medicine
https://www.readbyqxmd.com/read/29317819/inhibition-of-cancer-cell-migration-with-cus-msio2-peg-nanoparticles-by-repressing-mmp-2-mmp-9-expression
#14
Guoying Deng, Feng Zhou, Zizheng Wu, Fei Zhang, Kerun Niu, Yingjie Kang, Xijian Liu, Qiugen Wang, Yin Wang, Qian Wang
The metastasis of cancer cells is a vital aspect of disease progression and therapy. Although a few nanoparticles (NPs) aimed at controlling metastasis in cancer therapy have been reported, the NPs are normally combined with drugs, yet the direct therapeutic effects of the NPs are not reported. To study the direct influence of NPs on cancer metastasis, the potential suppression capacity of CuS@mSiO2-PEG NPs to tumor cell migration, a kind of typical photothermal NPs, was systemically evaluated in this study...
2018: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/29317342/imaging-guided-photo-therapeutic-nanoporphyrin-synergized-hsp90-inhibitor-in-patient-derived-xenograft-bladder-cancer-model
#15
Qilai Long, Tzu-Yin Lin, Yee Huang, Xiaocen Li, Ai-Hong Ma, Hongyong Zhang, Randy Carney, Susan Airhart, Kit S Lam, Chong-Xian Pan, Yuanpei Li
Photodynamic therapy is a promising and effective non-invasive therapeutic approach for the treatment of bladder cancers. Therapies targeting HSP90 have the advantage of tumor cell selectivity and have shown great preclinical efficacy. In this study, we evaluated a novel multifunctional nanoporphyrin platform loaded with an HSP90 inhibitor 17AAG (NP-AAG) for use as a multi-modality therapy against bladder cancer. NP-AAG was efficiently accumulated and retained at bladder cancer patient-derived xenograft (PDX) over 7 days...
January 6, 2018: Nanomedicine: Nanotechnology, Biology, and Medicine
https://www.readbyqxmd.com/read/29315500/long-term-outcome-of-dasatinib-first-line-treatment-in-gastrointestinal-stromal-tumor-a-multicenter-2-stage-phase-2-trial-swiss-group-for-clinical-cancer-research-56-07
#16
Michael Montemurro, Angela Cioffi, Julien Dômont, Piotr Rutkowski, Arnaud D Roth, Roger von Moos, Roman Inauen, Maud Toulmonde, Roger O Burkhard, Claudio Knuesli, Sebastian Bauer, Philippe Cassier, Heike Schwarb, Axel Le Cesne, Dieter Koeberle, Daniela Bärtschi, Daniel Dietrich, Christine Biaggi, John Prior, Serge Leyvraz
BACKGROUND: Tyrosine kinase inhibitors (TKIs) have improved the outcome of patients with gastrointestinal stromal tumors (GISTs), but most patients eventually develop resistance and progress. Dasatinib is a potent inhibitor of BCR-ABL, KIT, and SRC family kinases as well as imatinib-resistant cells. In GISTs, response evaluation is routinely done using computed tomography (CT) and 18 F-fluorodeoxyglucose positron emission tomography coupled to CT (FDG-PET/CT) for early response assessment and outcome prediction...
January 9, 2018: Cancer
https://www.readbyqxmd.com/read/29312631/proteomic-approach-toward-determining-the-molecular-background-of-pazopanib-resistance-in-synovial-sarcoma
#17
Zhiwei Qiao, Kumiko Shiozawa, Tadashi Kondo
Pazopanib, a multitarget tyrosine kinase (TK) inhibitor, has been approved for treatment of soft tissue sarcoma. Elucidation of the molecular background of pazopanib resistance should lead to improved clinical outcomes in sarcomas; accordingly, we investigated this in synovial sarcoma using a proteomic approach. Pazopanib sensitivity was examined in four synovial sarcoma cell lines: SYO-1, HS-SYII, 1273/99, and YaFuSS. The 1273/99 cell line showed significantly higher IC50 values than the others for pazopanib...
December 12, 2017: Oncotarget
https://www.readbyqxmd.com/read/29310804/the-cytoskeletal-network-regulates-expression-of-the-profibrotic-genes-pai-1-and-ctgf-in-vascular-smooth-muscle-cells
#18
Rohan Samarakoon, Paul J Higgins
Vascular smooth muscle cells (VSMCs) are subject to changing hemodynamic stimuli that alter cytoskeletal dynamics, cellular architecture, and structure-associated signal transduction. Tensional stress, force application, and structural perturbations are sensed by VSMCs and impact the physiological as well as pathophysiological responses of the vasculature. Microtubule-targeting drugs provide useful tools to analyze cytoskeletal-associated signaling pathways and their linkages to pathological outcomes. Architecture-based controls on a subset of profibrotic genes commonly expressed in vascular disease are highlighted by their frequent induction in mechanically manipulated cells and with associated changes in cytoskeletal dynamics...
2018: Advances in Pharmacology
https://www.readbyqxmd.com/read/29304860/role-and-regulation-of-abelson-tyrosine-kinase-in-crk-associated-substrate-profilin-1-interaction-and-airway-smooth-muscle-contraction
#19
Yinna Wang, Alyssa C Rezey, Ruping Wang, Dale D Tang
BACKGROUND: Airway smooth muscle contraction is critical for maintenance of appropriate airway tone, and has been implicated in asthma pathogenesis. Smooth muscle contraction requires an "engine" (myosin activation) and a "transmission system" (actin cytoskeletal remodeling). However, the mechanisms that control actin remodeling in smooth muscle are not fully elucidated. The adapter protein Crk-associated substrate (CAS) regulates actin dynamics and the contraction in smooth muscle. In addition, profilin-1 (Pfn-1) and Abelson tyrosine kinase (c-Abl) are also involved in smooth muscle contraction...
January 5, 2018: Respiratory Research
https://www.readbyqxmd.com/read/29301501/inhibition-of-neddylation-facilitates-cell-migration-through-enhanced-phosphorylation-of-caveolin-1-in-pc3-and-u373mg-cells
#20
Sung Yeon Park, Jong-Wan Park, Gun-Woo Lee, Lan Li, Yang-Sook Chun
BACKGROUND: Protein neddylation is a post-translational modification by a covalent conjugation with the neural precursor cell expressed, developmentally downregulated 8 (NEDD8). Although this process has been reported to participate in diverse cellular signaling, little is known about its role in cancer cell migration. Given a recent proteomics report showing that NEDD8 is downregulated in prostate cancer tissues versus normal prostate tissues, we tested the possibility that neddylation plays a role in cancer evolution, and then tried to identify target proteins of the neddylation...
January 5, 2018: BMC Cancer
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