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https://www.readbyqxmd.com/read/28102294/novel-bio-functional-magnesium-coating-on-porous-ti6al4v-orthopaedic-implants-in-vitro-and-in-vivo-study
#1
Xiaokang Li, Peng Gao, Peng Wan, Yifeng Pei, Lei Shi, Bo Fan, Chao Shen, Xin Xiao, Ke Yang, Zheng Guo
Titanium and its alloys with various porous structures are one of the most important metals used in orthopaedic implants due to favourable properties as replacement for hard tissues. However, surface modification is critical to improve the osteointegration of titanium and its alloys. In this study, a bioactive magnesium coating was successfully fabricated on porous Ti6Al4V by means of arc ion plating, which was proved with fine grain size and high film/substrate adhesion. The surface composition and morphology were characterized by X-ray diffraction and SEM equipped with energy dispersive spectroscopy...
January 19, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28102225/glucocorticoid-receptor-signalling-activates-yap-in-breast-cancer
#2
Giovanni Sorrentino, Naomi Ruggeri, Alessandro Zannini, Eleonora Ingallina, Rebecca Bertolio, Carolina Marotta, Carmelo Neri, Elisa Cappuzzello, Mattia Forcato, Antonio Rosato, Miguel Mano, Silvio Bicciato, Giannino Del Sal
The Hippo pathway is an oncosuppressor signalling cascade that plays a major role in the control of cell growth, tissue homoeostasis and organ size. Dysregulation of the Hippo pathway leads to aberrant activation of the transcription co-activator YAP (Yes-associated protein) that contributes to tumorigenesis in several tissues. Here we identify glucocorticoids (GCs) as hormonal activators of YAP. Stimulation of glucocorticoid receptor (GR) leads to increase of YAP protein levels, nuclear accumulation and transcriptional activity in vitro and in vivo...
January 19, 2017: Nature Communications
https://www.readbyqxmd.com/read/28102193/tumour-derived-interleukin-35-promotes-pancreatic-ductal-adenocarcinoma-cell-extravasation-and-metastasis-by-inducing-icam1-expression
#3
Chongbiao Huang, Na Li, Zengxun Li, Antao Chang, Yanan Chen, Tiansuo Zhao, Yang Li, Xiuchao Wang, Wei Zhang, Zhimin Wang, Lin Luo, Jingjing Shi, Shengyu Yang, He Ren, Jihui Hao
Interleukin 35 (IL-35) is a novel member of the IL-12 family, consisting of an EBV-induced gene 3 (EBI3) subunit and a P35 subunit. IL-35 is an immune-suppressive cytokine mainly produced by regulatory T cells. However, the role of IL-35 in cancer metastasis and progression is not well understood. Here we demonstrate that IL-35 is overexpressed in human pancreatic ductal adenocarcinoma (PDAC) tissues, and that IL-35 overexpression is associated with poor prognosis in PDAC patients. IL-35 has critical roles in PDAC cell extravasation and metastasis by facilitating the adhesion to endothelial cells and transendothelial extravasation...
January 19, 2017: Nature Communications
https://www.readbyqxmd.com/read/28101863/lessons-from-animal-models-of-cytoplasmic-intermediate-filament-proteins
#4
Jamal-Eddine Bouameur, Thomas M Magin
Cytoplasmic intermediate filaments (IFs) represent a major cytoskeletal network contributing to cell shape, adhesion and migration as well as to tissue resilience and renewal in numerous bilaterians, including mammals. The observation that IFs are dispensable in cultured mammalian cells, but cause tissue-specific, life-threatening disorders, has pushed the need to investigate their function in vivo. In keeping with human disease, the deletion or mutation of murine IF genes resulted in highly specific pathologies...
2017: Sub-cellular Biochemistry
https://www.readbyqxmd.com/read/28101348/evans-blue-mediated-white-light-detection-of-non-muscle-invasive-bladder-cancer-a-preclinical-feasibility-and-safety-study-using-a-rat-bladder-urothelial-cell-carcinoma-model
#5
Sanne Elsen, Evelyne Lerut, Frank Van Der Aa, Ben Van Cleynenbreugel, Hendrik Van Poppel, Peter De Witte
Photodynamic diagnosis (PDD) improves the detection of non-muscle-invasive bladder cancer (NMIBC). However, white-light (WL) cystoscopy remains the technique routinely used in urological clinics. A more cost-effective but equally performant alternative to PDD may encompass the use of an intense tumoritropic dye in combination with WL cystoscopy. Using a preclinical setting, we investigated the practical aspects of the use of Evans blue (EB) dye for the possible future detection of NMIBC using WL cystoscopy...
December 2016: Molecular and Clinical Oncology
https://www.readbyqxmd.com/read/28101211/receptor-fgfrl1-acts-as-a-tumor-suppressor-in-nude-mice-when-overexpressed-in-hek-293-tet-on-cells
#6
Lei Zhuang, Florian Steinberg, Beat Trueb
Fibroblast growth factor receptor-like 1 (FGFRL1) is a transmembrane receptor that interacts with heparin and FGF ligands. In contrast to the classical FGF receptors, FGFR1 to FGFR4, it does not appear to affect cell growth and proliferation. In the present study, an inducible gene expression system was utilized in combination with a xenograft tumor model to investigate the effects of FGFRL1 on cell adhesion and tumor formation. It was determined that recombinant FGFRL1 promotes the adhesion of HEK 293 Tet-On(®) cells in vitro...
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
#7
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/28098764/iqgap1-in-podosomes-invadosomes-is-involved-in-the-progression-of-glioblastoma-multiforme-depending-on-the-tumor-status
#8
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/28098306/effective-viscosity-and-dynamics-of-spreading-epithelia-a-solvable-model
#9
C Blanch-Mercader, R Vincent, E Bazellières, X Serra-Picamal, X Trepat, J Casademunt
Collective cell migration in spreading epithelia in controlled environments has become a landmark in our current understanding of fundamental biophysical processes in development, regeneration, wound healing or cancer. Epithelial monolayers are treated as thin layers of a viscous fluid that exert active traction forces on the substrate. The model is exactly solvable and shows a broad range of applicabilities for the quantitative analysis and interpretation of force microscopy data of monolayers from a variety of experiments and cell lines...
January 18, 2017: Soft Matter
https://www.readbyqxmd.com/read/28098193/non-pathogenic-tissue-resident-cd8-t-cells-uniquely-accumulate-in-the-brains-of-lupus-prone-mice
#10
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/28097057/a-gene-expression-study-of-dorso-ventrally-restricted-pigment-pattern-in-adult-fins-of-neolamprologus-meeli-an-african-cichlid-species
#11
Ehsan Pashay Ahi, Kristina M Sefc
Fish color patterns are among the most diverse phenotypic traits found in the animal kingdom. Understanding the molecular and cellular mechanisms that control in chromatophore distribution and pigmentation underlying this diversity is a major goal in developmental and evolutionary biology, which has predominantly been pursued in the zebrafish model system. Here, we apply results from zebrafish work to study a naturally occurring color pattern phenotype in the fins of an African cichlid species from Lake Tanganyika...
2017: PeerJ
https://www.readbyqxmd.com/read/28096669/nanocoating-with-plant-derived-pectins-activates-osteoblast-response-in-vitro
#12
J Folkert, A Meresta, T Gaber, K Miksch, F Buttgereit, J Detert, N Pischon, K Gurzawska
A new strategy to improve osseointegration of implants is to stimulate adhesion of bone cells, bone matrix formation, and mineralization at the implant surface by modifying surface coating on the nanoscale level. Plant-derived pectins have been proposed as potential candidates for surface nanocoating of orthopedic and dental titanium implants due to 1) their osteogenic stimulation of osteoblasts to mineralize and 2) their ability to control pectin structural changes. The aim of this study was to evaluate in vitro the impact of the nanoscale plant-derived pectin Rhamnogalacturonan-I (RG-I) from potato on the osteogenic response of murine osteoblasts...
2017: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/28096643/intestinal-obstruction-associated-with-ovarian-remnant-in-postmenopausal-female
#13
Ridhima Gupta, Pushpender Gupta
Ovarian remnant syndrome (ORS) is a rare condition, in which the ovarian tissue is inadvertently left behind after difficult oophorectomy. The most common preexisting conditions associated for this complication include endometriosis, pelvic inflammatory disease, and prior abdominal surgery as in these conditions, removal of ovarian tissue becomes difficult. This is likely due to the presence of the dense fibrotic adhesions between an ovary and the surrounding structures. This residual ovarian tissue can become functional and cystic...
October 2016: Journal of Mid-life Health
https://www.readbyqxmd.com/read/28096298/mfg-e8-derived-peptide-attenuates-adhesion-and-migration-of-immune-cells-to-endothelial-cells
#14
Yohei Hirano, Weng-Lang Yang, Monowar Aziz, Fangming Zhang, Barbara Sherry, Ping Wang
Milk fat globule-epidermal growth factor-factor 8 (MFG-E8) plays an immunomodulatory role in inflammatory diseases. MFG-E8-derived short peptide (MSP68) greatly reduces neutrophil infiltration and injury in the lung during sepsis. In this study, we examined the effect of MSP68 on chemotaxis of various immune cells and its regulatory mechanism. Bone marrow-derived neutrophils (BMDNs) from C57BL/6 mice, human monocyte THP-1 cell line, and human T lymphocyte Jurkat cell line were used for adhesion and migration assays using a Transwell method in the presence of MSP68...
January 17, 2017: Journal of Leukocyte Biology
https://www.readbyqxmd.com/read/28096264/adherens-junctions-on-the-move-membrane-trafficking-of-e-cadherin
#15
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/28096263/integration-of-cadherin-adhesion-and-cytoskeleton-at-adherens-junctions
#16
René Marc Mège, Noboru Ishiyama
The cadherin-catenin adhesion complex is the key component of the intercellular adherens junction (AJ) that contributes both to tissue stability and dynamic cell movements in epithelial and nonepithelial tissues. The cadherin adhesion complex bridges neighboring cells and the actin-myosin cytoskeleton, and thereby contributes to mechanical coupling between cells which drives many morphogenetic events and tissue repair. Mechanotransduction at cadherin adhesions enables cells to sense, signal, and respond to physical changes in their environment...
January 17, 2017: Cold Spring Harbor Perspectives in Biology
https://www.readbyqxmd.com/read/28096092/initiation-of-acute-graft-versus-host-disease-by-angiogenesis
#17
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/28095912/study-on-expression-of-cdh4-in-lung-cancer
#18
Zhupeng Li, Dan Su, Lisha Ying, Guangmao Yu, Weimin Mao
BACKGROUND: The human CDH4 gene, which encodes the R-cadherin protein, has an important role in cell migration and cell adhesion, sorting, tissue morphogenesis, and tumor genesis. This study analyzed the relationship of CDH4 mRNA expression with lung cancer. METHODS: Real time PCR was applied to detect CDH4 mRNA transcription in 142 paired cases of lung cancer and noncancerous regions. RESULTS: No correlation was identified between CDH4 mRNA expression and gender, age, lymphnode metastasis, TNM stage, family history, smoking state, drinking state (P > 0...
January 17, 2017: World Journal of Surgical Oncology
https://www.readbyqxmd.com/read/28095687/patterned-poly-dopamine-films-for-enhanced-cell-adhesion
#19
Xi Chen, Christina Cortez-Jugo, Gwan H Choi, Mattias Björnmalm, Yunlu Dai, Pil J Yoo, Frank Caruso
Engineered materials that promote cell adhesion and cell growth are important in tissue engineering and regenerative medicine. In this work, we produced poly(dopamine) (PDA) films with engineered patterns for improved cell adhesion. The patterned films were synthesized via the polymerization of dopamine at the air-water interface of a floating bed of spherical particles. Subsequent dissolution of the particles yielded free-standing PDA films with tunable geometrical patterns. Our results show that these patterned PDA films significantly enhance the adhesion of both cancer cells and stem cells, thus showing promise as substrates for cell attachment for various biomedical applications...
January 18, 2017: Bioconjugate Chemistry
https://www.readbyqxmd.com/read/28095646/a-frog-s-view-of-ephrinb-signaling
#20
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
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