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https://www.readbyqxmd.com/read/28741790/diallyl-trisulfide-inhibits-cell-migration-and-invasion-of-human-melanoma-a375-cells-via-inhibiting-integrin-facal-adhesion-kinase-pathway
#1
Hsiao-Chi Wang, Yung-Lin Chu, Shu-Chen Hsieh, Lee-Yan Sheen
Melanoma is the leading cause of death from skin disease due to its propensity for metastasis. Studies have shown that integrin-mediated focal adhesion kinase (FAK) signal pathway is implicated in cell proliferation, survival and metastasis of tumor cells. Our previous results indicated that diallyl trisulfide (DATS) provided its antimelanoma activity via inducing cell cycle arrest and apoptosis. The aim of this study was to explore DATS mediated antimetastatic effect and the corresponding mechanism in human melanoma A375 cells...
July 25, 2017: Environmental Toxicology
https://www.readbyqxmd.com/read/28741418/focal-adhesion-kinase-activation-is-necessary-for-stretch-induced-alignment-and-enhanced-differentiation-of-myogenic-precursor-cells
#2
Jens Isak Andersen, Cristian Pablo Pennisi, Trine Fink, Vladimir Zachar
Myogenic precursors sense and dynamically respond to mechanical stimulation through complex integrin-mediated mechanotransduction, in which focal adhesion kinase (FAK) is a fundamental intracellular signaling mediator. When skeletal myoblasts are exposed to uniaxial cyclic tensile strain (UCTS) they display uniform alignment and an enhanced rate of differentiation. In this work, we explored the role of FAK activation using C2C12 myoblasts that were grown on flexible culture plates and exposed to UCTS during the early differentiation phase...
July 25, 2017: Tissue Engineering. Part A
https://www.readbyqxmd.com/read/28740516/pge2-promotes-the-migration-of-mesenchymal-stem-cells-through-the-activation-of-fak-and-erk1-2-pathway
#3
Xiaomin Lu, Jibin Han, Xiuping Xu, Jingyuan Xu, Ling Liu, Yingzi Huang, Yi Yang, Haibo Qiu
A critical step of MSCs therapy is dependent on its ability to migrate into the sites of injury, so various approaches have been introduced to boost the migratory ability of MSCs. PGE2 is the major prostaglandin generated by COX enzymes and has been implicated in inflammatory response. Evidence indicates that PGE2 can facilitate MSCs migration. Further exploration of the underlying molecular mechanism participating in the promigratory ability of PGE2 may provide a novel strategy to improve MSC transplantation efficacy...
2017: Stem Cells International
https://www.readbyqxmd.com/read/28739717/potential-implication-of-paxillin-in-cancer-establishment-within-the-bone-environment
#4
Anna D Sobkowicz, Andrew J Sanders, Malcolm D Mason, Wen G Jiang
BACKGROUND: Bone metastases are a common feature of advanced prostatic malignancies. They are characterised by a unique prevalence of osteoblastic phenotype and a poor prognosis. Paxillin is a 68-kDa signal transduction adaptor and scaffold protein that contains motifs involved in the mediation of protein-protein interactions. The state of paxillin phosphorylation is central to determining a cell's ability to adhere, detach and migrate and hence has been linked to processes such as wound repair and tumour metastasis...
August 2017: Anticancer Research
https://www.readbyqxmd.com/read/28736978/cxcl8-promotes-the-invasion-of-human-osteosarcoma-cells-by-regulation-of-pi3k-akt-signaling-pathway
#5
Hai Jiang, Xiaowei Wang, Wusheng Miao, Bing Wang, Yusheng Qiu
Chemokine cysteine-X-cysteine motif ligand 8 (CXCL8) is up-regulated in many malignancies, indicating that CXCL8 takes part in tumor progression. However, the expression and function of CXCL8 in osteosarcoma remained not fully elucidated. In this study, expressions of 12 cytokines and chemokines were measured in the serum from 12 of normal controls (NCs) and 25 of osteosarcoma patients. The human osteosarcoma cell line MG-63 was stimulated by recombinant CXCL8 to further analyze invasion, proliferation, apoptosis, cell cycles, cytokine secretions, and signaling pathways...
July 24, 2017: APMIS: Acta Pathologica, Microbiologica, et Immunologica Scandinavica
https://www.readbyqxmd.com/read/28733702/anti-invasive-effects-of-cxcr4-and-fak-inhibitors-in-non-small-cell-lung-carcinomas-with-mutually-inactivated-p53-and-pten-tumor-suppressors
#6
Miodrag Dragoj, Jasna Bankovic, Evangelia Sereti, Sofija Jovanovic Stojanov, Konstantinos Dimas, Milica Pesic, Tijana Stankovic
Non-small cell lung carcinoma (NSCLC) is the most common type of lung cancer. At the time of diagnosis, a large percentage of NSCLC patients have already developed metastasis, responsible for extremely high mortality rates. CXCR4 receptor and focal adhesion kinase (FAK) are known to regulate such invasive cancer behavior. Their expression is downregulated by p53 and PTEN tumor suppressors which are commonly co-inactivated in NSCLC patients and contribute to metastasis. Therefore, targeting CXCR4 or FAK seems to be a promising strategy in suppressing metastatic spread of p53/PTEN deficient NSCLCs...
July 22, 2017: Investigational New Drugs
https://www.readbyqxmd.com/read/28730470/dissecting-kinase-effector-signaling-using-the-raprtap-methodology
#7
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/28729346/distinct-pka-regulatory-subunits-mediate-pge2-inhibition-of-tgf%C3%AE-1-stimulated-collagen-i-translation-and-myofibroblast-differentiation
#8
Scott H Wettlaufer, L Raghu Penke, Katsuhide Okunishi, Marc Peters-Golden
Prostaglandin E2 (PGE2), via cAMP signaling, inhibits a variety of fibroblast functions relevant to fibrogenesis. Among these are their translation of collagen I protein and their differentiation to myofibroblasts. PKA is central to these actions, with cAMP binding to regulatory (R) subunits leading to the release of catalytic subunits. Here we examined the role of specific PKAR subunit isoforms in these inhibitory actions in transforming growth factorβ-1 (TGFβ-1)-stimulated human lung fibroblasts (HLFs)...
July 20, 2017: American Journal of Physiology. Lung Cellular and Molecular Physiology
https://www.readbyqxmd.com/read/28726786/calcium-binding-protein-s100a14-induces-differentiation-and-suppresses-metastasis-in-gastric-cancer
#9
Min Zhu, Hongyi Wang, Jiantao Cui, Wenmei Li, Guo An, Yuanming Pan, Qingying Zhang, Rui Xing, Youyong Lu
S100A14 is a calcium-binding protein involved in cell proliferation and differentiation as well as the metastasis of human tumors. In this study, we characterized the regulation of S100A14 expression between biological signatures and clinical pathological features in gastric cancer (GC). Our data demonstrated that S100A14 induced the differentiation of GC by upregulating the expression of E-cadherin and PGII. Moreover, S100A14 expression negatively correlated with cell migration and invasion in in vitro and in vivo experimental models...
July 20, 2017: Cell Death & Disease
https://www.readbyqxmd.com/read/28726546/nanotopographic-influence-on-the-in-vitro-behavior-of-induced-pluripotent-stem-cells
#10
Ji-Yun Ko, Hyun-Jik Oh, Jimin Lee, Gun-Il Im
While the influence of nanotopography on stem cell behavior have been extensively investigated on adult stem cells, far fewer studies have investigated the interaction of induced pluripotent stem cells (iPSC) with various nanotopographical patterns. The purpose of this study was to identify nanopatterns that can influence the stemness and proliferation as well as the adhesive properties in iPSCs, and thereby explore the feasibility of applying these nano-features for regenerative medicine. Three kinds of nanopatterns were fabricated from polydimethylsiloxane (PDMS) membranes, irregular patterned membrane (IPM), groove patterned membrane (GPM), and post patterned membrane (PPM), in addition to flat patterned membrane (FPM) which did not have any nanotopographic features and was used as the control pattern...
July 20, 2017: Tissue Engineering. Part A
https://www.readbyqxmd.com/read/28723623/daurinol-blocks-breast-and-lung-cancer-metastasis-and-development-by-inhibition-of-focal-adhesion-kinase-fak
#11
Jong K Woo, Hyun J Jung, Ji-Youn Park, Ju-Hee Kang, Byung I Lee, DongYun Shin, Chu W Nho, Soo-Young Cho, Je K Seong, Seung H Oh
FAK overexpression has been reported in diverse primary and metastatic tumor tissues, supporting its pro-tumorigenic and pro-metastatic roles. Therefore, we have developed a neo-treatment strategy using daurinol to effectively treat cancer metastasis. Daurinol blocked cancer cell migration and invasion in vitro and exhibited anti-metastatic activity in an experimental metastasis model of breast and lung cancer. Daurinol selectively inhibited phosphorylation of FAK at Tyr925, Tyr576/577, and Tyr397 sites in a dose- and time-dependent manner...
July 4, 2017: Oncotarget
https://www.readbyqxmd.com/read/28715434/engineered-extracellular-matrices-with-controlled-mechanics-modulate-renal-proximal-tubular-cell-epithelialization
#12
Jeffrey A Beamish, Evan Chen, Andrew J Putnam
Acute kidney injury (AKI) is common and associated with significant morbidity and mortality. Recovery from many forms of AKI involves the proliferation of renal proximal tubular epithelial cells (RPTECs), but the influence of the microenvironment in which this recovery occurs remains poorly understood. Here we report the development of a poly(ethylene glycol) (PEG) hydrogel platform to study the influence of substrate mechanical properties on the proliferation of human RPTECs as a model for recovery from AKI...
2017: PloS One
https://www.readbyqxmd.com/read/28713929/microrna-379-inhibits-metastasis-and-epithelial-mesenchymal-transition-via-targeting-fak-akt-signaling-in-gastric-cancer
#13
Meizhong Xu, Shui Qin, Fan Cao, Shi Ding, Mengnan Li
Accumulating evidence demonstrates that aberrant miRNAs contribute to gastric cancer (GC) development and progression. However, the roles of various miRNAs in GC remain to be determined. In the present study, we confirmed that a reduced miR-379 expression was present in GC tissues and cell lines. Our clinical analysis revealed that the downregulated miR-379 expression was significantly correlated with poor prognostic features including lymph node metastasis and advanced TNM stage. Moreover, we confirmed that miR-379 was a novel independent prognostic marker for predicting 5-year survival of GC patients...
July 12, 2017: International Journal of Oncology
https://www.readbyqxmd.com/read/28712848/a-short-region-of-connexin43-reduces-human-glioma-stem-cell-migration-invasion-and-survival-through-src-pten-and-fak
#14
Myriam Jaraíz-Rodríguez, Ma Dolores Tabernero, María González-Tablas, Alvaro Otero, Alberto Orfao, Jose M Medina, Arantxa Tabernero
Connexin43 (CX43), a protein that forms gap junction channels and hemichannels in astrocytes, is downregulated in high-grade gliomas. Its relevance for glioma therapy has been thoroughly explored; however, its positive effects on proliferation are counterbalanced by its effects on migration and invasion. Here, we show that a cell-penetrating peptide based on CX43 (TAT-Cx43266-283) inhibited c-Src and focal adhesion kinase (FAK) and upregulated phosphatase and tensin homolog in glioma stem cells (GSCs) derived from patients...
July 3, 2017: Stem Cell Reports
https://www.readbyqxmd.com/read/28704809/istaroxime-inhibits-motility-and-down-regulates-orai1-expression-soce-and-fak-phosphorylation-in-prostate-cancer-cells
#15
Matias Julian Stagno, Nefeli Zacharopoulou, Jonas Bochem, Anna Tsapara, Lisann Pelzl, Tamer Al-Maghout, Galatea Kallergi, Saad Alkahtani, Konstantinos Alevizopoulos, Konstantinos Dimas, Theodora Calogeropoulou, Steven W Warmann, Florian Lang, Evi Schmid, Christos Stournaras
BACKGROUND/AIMS: Istaroxime is a validated inotropic Na+/K+ ATPase inhibitor currently in development for the treatment of various cardiac conditions. Recent findings established that this steroidal drug exhibits potent apoptotic responses in prostate tumors in vitro and in vivo, by affecting key signaling orchestrating proliferation and apoptosis, such as c-Myc and caspase 3, Rho GTPases and actin cytoskeleton dynamics. In the present study we examined whether istaroxime is affecting cell motility and analyzed the underlying mechanism in prostate tumor cells...
July 14, 2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/28703800/killing-two-birds-with-one-stone-dual-blockade-of-integrin-and-fgf-signaling-through-targeting-syndecan-4-in-postoperative-capsular-opacification
#16
Yingyan Qin, Yi Zhu, Furong Luo, Chuan Chen, Xiaoyun Chen, Mingxing Wu
The most common complication after cataract surgery is postoperative capsular opacification, which includes anterior capsular opacification (ACO) and posterior capsular opacification (PCO). Increased adhesion of lens epithelial cells (LECs) to the intraocular lens material surface promotes ACO formation, whereas proliferation and migration of LECs to the posterior capsule lead to the development of PCO. Cell adhesion is mainly mediated by the binding of integrin to extracellular matrix proteins, while cell proliferation and migration are regulated by fibroblast growth factor (FGF)...
July 13, 2017: Cell Death & Disease
https://www.readbyqxmd.com/read/28702842/essential-role-of-sh3gl1-in-interleukin-6-il-6-and-vascular-endothelial-growth-factor-vegf-triggered-p130-cas-mediated-proliferation-and-migration-of-osteosarcoma-cells
#17
En-Qi Li, Jin-Li Zhang
We recently demonstrated that interleukin-6 (IL-6)- and vascular endothelial growth factor (VEGF)-induced osteosarcoma (OS) cell proliferation and migration are parallel to significant increased expression of SH3GL1 and the phosphorylation level of P130(cas). The expression level of SH3GL1 was widely upregulated in human OS tissues, and their overexpression was significantly correlated with more aggressive clinicopathological features. Conversely, depletion of SH3GL1 by adenovirus shRNA abrogates P130(cas) phosphorylation and IL-6- and VEGF-induced OS cell proliferation and migration...
July 12, 2017: Human Cell
https://www.readbyqxmd.com/read/28701735/quantitative-proteomics-reveal-the-anti-tumour-mechanism-of-the-carbohydrate-recognition-domain-of-galectin-3-in-hepatocellular-carcinoma
#18
Mingchao Wang, Fang Tian, Wantao Ying, Xiaohong Qian
Hepatocellular carcinoma (HCC) is a serious threat to human health. The carbohydrate recognition domain of Galectin-3 (Gal3C) has been reported to be an anti-tumour molecule. In this study, we aim to explore effects of Gal3C in HCC and its possible molecular mechanism with quantitative proteomics approach. We found that rGal3C stimulation could inhibit cell viability, migration and invasion of HepG2. After rGal3C stimulating, 190 proteins were differentially expressed. Eighty up-regulated proteins located mainly in extracellular exosome and involved in cell adhesion and metabolism, and 110 down-regulated proteins located in mitochondria and extracellular exosome, and related to processes of metabolism and oxidation-reduction...
July 12, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28701377/microrna-206-modulates-an-rtn4a-cxcr4a-thbs3a-axis-in-newly-forming-somites-to-maintain-and-stabilize-the-somite-boundary-formation-of-zebrafish-embryos
#19
Cheng-Yung Lin, Jun-Yu He, Chih-Wei Zeng, Moo-Rumg Loo, Wen-Yen Chang, Po-Hsiang Zhang, Huai-Jen Tsai
Although microRNA-206 (miR-206) is known to regulate proliferation and differentiation of muscle fibroblasts, the role of miR-206 in early-stage somite development is still unknown. During somitogenesis of zebrafish embryos, reticulon4a (rtn4a) is specifically repressed by miR-206. The somite boundary was defective, and actin filaments were crossing over the boundary in either miR-206-knockdown or rtn4a-overexpressed embryos. In these treated embryos, C-X-C motif chemokine receptor 4a (cxcr4a) was reduced, while thrombospondin 3a (thbs3a) was increased...
July 2017: Open Biology
https://www.readbyqxmd.com/read/28701345/trim9-dependent-ubiquitination-of-dcc-constrains-kinase-signaling-exocytosis-and-axon-branching
#20
Melissa Plooster, Shalini Menon, Cortney C Winkle, Fabio L Urbina, Caroline Monkiewicz, Kristen D Phend, Richard J Weinberg, Stephanie L Gupton
Extracellular netrin-1 and its receptor DCC promote axon branching in developing cortical neurons. Netrin-dependent morphogenesis is preceded by multimerization of DCC, activation of FAK and Src family kinases, and increases in exocytic vesicle fusion, yet how these occurrences are linked is unknown. Here we demonstrate that TRIM9-dependent ubiquitination of DCC blocks the interaction with and phosphorylation of FAK. Upon netrin-1 stimulation TRIM9 promotes DCC multimerization, but TRIM9-dependent ubiquitination of DCC is reduced, which promotes an interaction with FAK and subsequent FAK activation...
July 12, 2017: Molecular Biology of the Cell
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