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Cell Adhesion & Migration

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https://www.readbyqxmd.com/read/29961393/polarity-and-morphogenesis-of-the-eye-epithelium-requires-the-adhesion-junction-associated-adaptor-protein-traf4
#1
Carrie Lynn Hehr, Rami Halabi, Sarah McFarlane
During development, neuroepithelial progenitors acquire apico-basal polarity and adhere to one another via apically located tight and adherens junction complexes. This polarized neuroepithelium must continue to integrate cells arising through cell divisions and intercalation, and allow for cell movements, at the same time as undergoing morphogenesis. Cell proliferation, migration and intercalation all occur in the morphing embryonic eye. To understand how eye development might depend on dynamic epithelial adhesion, we investigated the function of a known regulator of junctional plasticity, Tumour necrosis factor receptor-associated factor 4 (Traf4)...
July 31, 2018: Cell Adhesion & Migration
https://www.readbyqxmd.com/read/30015560/role-of-glycosylation-in-hypoxia-driven-cell-migration-and-invasion
#2
Cecilia Arriagada, Patricio Silva, Vicente A Torres
Hypoxia, a common condition of the tumor microenvironment, induces changes in the proteome of cancer cells, mainly via HIF-1, a transcription factor conformed by a constitutively expressed β-subunit and an oxygen-regulated α-subunit. In hypoxia, HIF-1α stabilizes, forms the heterodimeric complex with HIF-1β, and binds to Hypoxia Response Elements (HRE), activating gene expression to promote metabolic adaptation, cell invasion and metastasis. Furthermore, the focal adhesion kinase, FAK, is activated in hypoxia, promoting cell migration by mechanisms that remain unclear...
July 17, 2018: Cell Adhesion & Migration
https://www.readbyqxmd.com/read/29969940/behavioral-remodeling-of-normal-and-cancerous-epithelial-cell-lines-with-differing-invasion-potential-induced-by-substrate-elastic-modulus
#3
Arian Ansardamavandi, Mohammad Tafazzoli-Shadpour, Mohammad Ali Shokrgozar
The micro-environment of cancer cells in the body is mechanically stiffer than that of normal cells. This phenomenon may alter cellular features. We cultured three breast cell lines of MCF10A-normal, MCF7-noninvasive, and MDA-MB-231-invasive on PDMS substrates with elastic moduli of 640kpa, 40kpa and 10kpa, and examined alterations in morphology, cell area, actin structure, cell motility and gene expression caused by substrate stiffness among three cell lines. Effects of substrate stiffness on cell behavior were evident among all examined cell lines...
July 3, 2018: Cell Adhesion & Migration
https://www.readbyqxmd.com/read/29969346/discoidin-domain-receptors-multitaskers-for-physiological-and-pathological-processes
#4
Birgit Leitinger, Frédéric Saltel
No abstract text is available yet for this article.
July 3, 2018: Cell Adhesion & Migration
https://www.readbyqxmd.com/read/29961420/a-biophysically-defined-hyaluronic-acid-based-compound-accelerates-migration-and-stimulates-the-production-of-keratinocyte-derived-neuromodulators
#5
Annalisa La Gatta, Antonella D'Agostino, Chiara Schiraldi, Giuseppe Colella, Nicola Cirillo
Hyaluronic acid (HA) preparations are widely used in clinical practice and recent data suggest that commercially available HA-based compounds promote ulcer re-epithelialization and induce pain relief. However, the pathophysiological basis of these effects remains poorly understood. In the present study, we investigated the biophysical, biomolecular and functional properties of a HA preparation combined with a pool of collagen precursor synthetic aminoacids, namely l-proline, l-leucine, l-lysine and glycine (Aminogam®)...
July 2, 2018: Cell Adhesion & Migration
https://www.readbyqxmd.com/read/29952722/ddr1-and-ddr2-in-skin
#6
Muriel Cario
Human skin is one of the most important organs in the human body since its main role is to protect the body against deleterious external factors such as ultraviolet (UV) light, trauma, microorganisms and chemicals. It is composed of three layers: the hypodermis, dermis and epidermis (Figure 1). The epidermis, which is the external layer, is a keratinized pluristratified epithelium composed of keratinocytes (90 %), melanocytes (5%) in the basal layer, Merkel cells and Langerhans cells. The dermis is a connective tissue that supports and nourishes the epidermis since the latter is not vascularized...
June 28, 2018: Cell Adhesion & Migration
https://www.readbyqxmd.com/read/29952716/inositol-polyphosphate-4-phosphatase-type-ii-plays-critical-roles-in-the-modulation-of-cadherin-mediated-adhesion-dynamics-of-pancreatic-ductal-adenocarcinomas
#7
Bin Zhang, Weidong Wang, Chonghui Li, Rong Liu
The inositol polyphosphate-4-phosphatase type II (INPP4B) has been mostly proposed to act as a tumor suppressor whose expression is frequently dysregulated in numerous human cancers. To date, little is unveiled about whether and how INPP4B will exert its tumor suppressive function on the turnover of cadherin-based cell-cell adhesion system in pancreatic ductal adenocarcinomas (PDACs) in vitro. Here we provide the evidence that INPP4B manipulates cadherin switch in certain PDAC cell lines through a phosphorylated AKT-inactivation manner...
June 28, 2018: Cell Adhesion & Migration
https://www.readbyqxmd.com/read/29733741/age-related-modifications-of-type-i-collagen-impair-ddr1-induced-apoptosis-in-non-invasive-breast-carcinoma-cells
#8
Charles Saby, Hassan Rammal, Kevin Magnien, Emilie Buache, Sylvie Brassart-Pasco, Laurence Van-Gulick, Pierre Jeannesson, Erik Maquoi, Hamid Morjani
Type I collagen and DDR1 axis has been described to decrease cell proliferation and to initiate apoptosis in non-invasive breast carcinoma in three-dimensional cell culture matrices. Moreover, MT1-MMP down-regulates these effects. Here, we address the effect of type I collagen aging and MT1-MMP expression on cell proliferation suppression and induced-apoptosis in non-invasive MCF-7 and ZR-75-1 breast carcinoma. We provide evidence for a decrease in cell growth and an increase in apoptosis in the presence of adult collagen when compared to old collagen...
June 28, 2018: Cell Adhesion & Migration
https://www.readbyqxmd.com/read/29945484/quercetin-inhibits-lps-induced-macrophage-migration-by-suppressing-the-inos-fak-paxillin-pathway-and-modulating-the-cytoskeleton
#9
Shuna Cui, Qingqing Wu, Juan Wang, Min Li, Jing Qian, Shihua Li
The natural flavonoid quercetin has antioxidant, anti-inflammatory, and anticancer effects. We investigated the effect of quercetin on lipopolysaccharide (LPS)-induced macrophage migration. Quercetin significantly attenuated LPS-induced inducible nitric oxide synthase (iNOS)-derived nitric oxide (NO) production in RAW264.7 cells without affecting their viability. Additionally, quercetin altered the cell size and induced an elongated morphology and enlarged the vacuoles and concentrated nuclei. Quercetin significantly disrupted the F-actin cytoskeleton structure...
June 26, 2018: Cell Adhesion & Migration
https://www.readbyqxmd.com/read/29781387/estrogen-related-receptor-alpha-triggers-the-migration-and-invasion-of-endometrial-cancer-cells-via-up-regulation-of-tgfb1
#10
Xiumin Huang, Xuelian Wang, Jing Shang, Zhiqin Zhaang, Binbin Cui, Yanzhen Lin, Ying Yang, Youyi Song, Shengnan Yu, Junjie Xia
Estrogenic signals have been suggested to be important for the tumorigenesis and progression of endometrial cancer (EC) cells. Our present data showed that estrogen related receptor alpha (ERRα), while not ERRβ or ERRγ, was significantly elevated in EC cells and tissues when compared to their controls. Targeted inhibition of ERRα by siRNA or its inverse agonist XCT-790 can suppress the migration and invasion of EC cells. Both si-ERRα and XCT-790 decreased the expression of transforming growth factor-beta (TGF-β)...
June 25, 2018: Cell Adhesion & Migration
https://www.readbyqxmd.com/read/29616590/ddr1-and-ddr2-physical-interaction-leads-to-signaling-interconnection-but-with-possible-distinct-functions
#11
Coralie Croissant, Adjanie Tuariihionoa, Marion Bacou, Wilfried Souleyreau, Margaux Sala, Elodie Henriet, Andreas Bikfalvi, Frederic Saltel, Patrick Auguste
Discoidin domain receptors 1 and 2 (DDR1 and DDR2) are members of the tyrosine kinase receptors activated after binding with collagen. DDRs are implicated in numerous physiological and pathological functions such as proliferation, adhesion and migration. Little is known about the expression of the two receptors in normal and cancer cells and most of studies focus only on one receptor. Western blot analysis of DDR1 and DDR2 expression in different tumor cell lines shows an absence of high co-expression of the two receptors suggesting a deleterious effect of their presence at high amount...
June 25, 2018: Cell Adhesion & Migration
https://www.readbyqxmd.com/read/29701112/multitasking-discoidin-domain-receptors-are-involved-in-several-and-specific-hallmarks-of-cancer
#12
Elodie Henriet, Margaux Sala, Aya Abou Hammoud, Adjanie Tuariihionoa, Julie Di Martino, Manon Ros, Frédéric Saltel
Discoidin domain receptors, DDR1 and DDR2, are two members of collagen receptor family that belong to tyrosine kinase receptor subgroup. Unlike other matrix receptor-like integrins, these collagen receptors have not been extensively studied. However, more and more studies are focusing on their involvement in cancer. These two receptors are present in several subcellular localizations such as intercellular junction or along type I collagen fibers. Consequently, they are involved in multiple cellular functions, for instance, cell cohesion, proliferation, adhesion, migration and invasion...
June 8, 2018: Cell Adhesion & Migration
https://www.readbyqxmd.com/read/29741444/isoquercitrin-ingredients-in-tetrastigma-hemsleyanum-diels-et-gilg-inhibits-hepatocyte-growth-factor-scatter-factor-induced-tumor-cell-migration-and-invasion
#13
Geng-Shou Xia, Shu-Hong Li, Wu Zhou
Aberrant activation of hepatocyte growth factor/scatter factor (HGF/SF) and its receptor, Met, is involved in the development and progression of many human cancers. In the screening assay of extracts from the root tuber of Tetrastigma hemsleyanum Diels et Gilg, isoquercitrin inhibited HGF/SF-Met signaling as indicated by its inhibitory activity on HGF/SF-induced cell scattering. Further analysis revealed that isoquercitrin specifically inhibited HGF/SF-induced tyrosine phosphorylation of Met. We also found that isoquercitrin decreased HGF-induced migration and invasion by parental or HGF/SF-transfected bladder carcinoma cell line NBT-II cells...
May 28, 2018: Cell Adhesion & Migration
https://www.readbyqxmd.com/read/29733749/real-time-dynamics-of-neutrophil-clustering-in-response-to-phototoxicity-induced-cell-death-and-tissue-damage-in-mouse-ear-dermis
#14
Sang A Park, Young Ho Choe, Eunji Park, Young-Min Hyun
Neutrophils are highly motile innate immune cells; they actively migrate in response to inflammatory signals. Using two-photon intravital microscopy, we discovered that neutrophils form stable clusters upon phototoxicity at a certain threshold. Without significant damage to the collagen structure of mouse dermis, neutrophils aggregated together with nearby neutrophils. Surprisingly, this in situ neutrophil clustering resulted in rigorous changes of migratory direction. The density of residing neutrophils was also a critical factor affecting clustering...
May 22, 2018: Cell Adhesion & Migration
https://www.readbyqxmd.com/read/29781749/oncogenic-pkc-%C3%AE-activates-vimentin-during-epithelial-mesenchymal-transition-in-melanoma-a-study-based-on-pkc-%C3%AE-and-pkc-%C3%AE-specific-inhibitors
#15
Wishrawana S Ratnayake, Christopher A Apostolatos, André H Apostolatos, Ryan J Schutte, Monica A Huynh, David A Ostrov, Mildred Acevedo-Duncan
Melanoma is one of the fastest growing cancers in the United States and is accompanied with a poor prognosis owing to tumors being resistant to most therapies. Atypical protein kinase Cs (aPKC) are involved in malignancy in many cancers. We previously reported that aPKCs play a key role in melanoma's cell motility by regulating cell signaling pathways which induce epithelial-mesenchymal Transition (EMT). We tested three novel inhibitors; [4-(5-amino-4-carbamoylimidazol-1-yl)-2,3-dihydroxycyclopentyl] methyl dihydrogen phosphate (ICA-1T) along with its nucleoside analog 5-amino-1-((1R,2S,3S,4R)-2,3-dihydroxy-4-methylcyclopentyl)-1H-imidazole-4-carboxamide (ICA-1S) which are specific to protein kinase C-iota (PKC-ι) and 8-hydroxy-1,3,6-naphthalenetrisulfonic acid (ζ-Stat) which is specific to PKC-zeta (PKC-ζ) on cell proliferation, apoptosis, migration and invasion of two malignant melanoma cell lines compared to normal melanocytes...
May 21, 2018: Cell Adhesion & Migration
https://www.readbyqxmd.com/read/29671358/discoidin-domain-receptors-microenvironment-sensors-that-promote-cellular-migration-and-invasion
#16
Yoshifumi Itoh
Extracellular matrix (ECM) provides cells scaffolding for cell migration and microenvironment for various cellular functions. Collagens are major ECM components in tissue and discoidin domain receptors (DDRs) are receptor tyrosine kinases (RTK) that recognise fibrillar collagens. Unlike other RTK, their ligands are solid ECM the that are abundantly present in the pericellular environment in various tissue, and thus its activation and regulations are unique amongst RTK family. It is emerging that DDRs may be the sensors that monitor and detects changes in ECM microenvironment and determines the cellular fates upon tissue injuries...
May 8, 2018: Cell Adhesion & Migration
https://www.readbyqxmd.com/read/29513145/new-insights-into-the-formation-and-the-function-of-lamellipodia-and-ruffles-in-mesenchymal-cell-migration
#17
Metello Innocenti
Lamellipodia and ruffles are veil-shaped cell protrusions composed of a highly branched actin filament meshwork assembled by the Arp2/3 complex. These structures not only hallmark the leading edge of cells adopting the adhesion-based mesenchymal mode of migration but are also thought to drive cell movement. Although regarded as textbook knowledge, the mechanism of formation of lamellipodia and ruffles has been revisited in the last years leveraging new technologies. Furthermore, recent observations have also challenged our current view of the function of lamellipodia and ruffles in mesenchymal cell migration...
May 8, 2018: Cell Adhesion & Migration
https://www.readbyqxmd.com/read/29505315/a-putative-role-for-discoidin-domain-receptor-1-in-cancer-chemoresistance
#18
Chiara Ambrogio, Elodie Darbo, Sam W Lee, David Santamaría
The Discoidin Domain Receptor 1 (DDR1) receptor tyrosine kinase performs pleiotropic functions in the control of cell adhesion, proliferation, survival, migration, and invasion. Aberrant DDR1 function as a consequence of either mutations or increased expression has been associated with various human diseases including cancer. Pharmacological inhibition of DDR1 results in significant therapeutic benefit in several pre-clinical cancer models. Here, we discuss the potential implication of DDR1-dependent pro-survival functions in the development of cancer resistance to chemotherapeutic regimens and speculate on the molecular mechanisms that might mediate such important feature...
April 3, 2018: Cell Adhesion & Migration
https://www.readbyqxmd.com/read/29513135/mechanical-signaling-through-the-discoidin-domain-receptor-1-plays-a-central-role-in-tissue-fibrosis
#19
Nuno M Coelho, Christopher A McCulloch
The preservation of tissue and organ architecture and function depends on tightly regulated interactions of cells with the extracellular matrix (ECM). These interactions are maintained in a dynamic equilibrium that balances intracellular, myosin-generated tension with extracellular resistance conferred by the mechanical properties of the extracellular matrix. Disturbances of this equilibrium can lead to the development of fibrotic lesions that are associated with a wide repertoire of high prevalence diseases including obstructive cardiovascular diseases, muscular dystrophy and cancer...
March 26, 2018: Cell Adhesion & Migration
https://www.readbyqxmd.com/read/29486622/a-novel-functional-crosstalk-between-ddr1-and-the-igf-axis-and-its-relevance-for-breast-cancer
#20
Antonino Belfiore, Roberta Malaguarnera, Maria Luisa Nicolosi, Rosamaria Lappano, Marco Ragusa, Andrea Morrione, Veronica Vella
In the last decades increasing importance has been attributed to the Insulin/Insulin-like Growth Factor signaling (IIGFs) in cancer development, progression and resistance to therapy. In fact, IIGFs is often deregulated in cancer. In particular, the mitogenic insulin receptor isoform A (IR-A) and the insulin-like growth factor receptor (IGF-1R) are frequently overexpressed in cancer together with their cognate ligands IGF-1 and IGF-2. Recently, we identified discoidin domain receptor 1 (DDR1) as a new IR-A interacting protein...
March 23, 2018: Cell Adhesion & Migration
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