cell cell and cell matrix interactions abrogate the microenvironmental control on intraepithelial tumor cells and promote cancer progression
Báo cáo y học: "The role played by cell-substrate interactions in the pathogenesis of osteoclast-mediated peri-implant osteolysis" potx
... origin The association of the fibroblastic cells with the bone surface and the ex vivo demonstration that they can resorb a bone matrix have led some investigators to speculate that these cells ... differentiation Cathepsin K and tartrate-resistant acid phosphatase (TRAP) are among the enzymes that are expressed in these cells and contribute to the resorption of the extracellular matrix component ... field] and d [dark field]) Multinuclear cells on the bone surface (panels e and f) and mononuclear and multinuclear cells associated with PE particles (panels g and h) stain positively for cathepsin...
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Báo cáo khoa học: Super life – how and why ‘cell selection’ leads to the fastest-growing eukaryote doc
... orice The morphology and dimensions of the cells were microscopically determined and compared with a standard Cellular protein content The protein concentration of the cells was determined using the ... volume The former is considered proportional to the cell surface and is assumed to control growth proportionally Thus variation in cell morphology may change the cells surfaceto-volume ratio and ... areas and cell volumes for various S cerevisiae generations, assuming the cells to be ellipsoidal spheres The so-called virgin cells, which are the youngest yeast cells possessing only one birth...
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Báo cáo khoa học: Bridging the gap between in silico and cell-based analysis of the nuclear factor-jB signaling pathway by in vitro studies of IKK2 ppt
... from the global t The constant a is the ratio of apparent dissociation constants for binding GST-IjBa in the presence and absence of ATP, and the value of a indicates whether the binding of one ... substrate at saturation concentration of 60 lM ATP, and the dissociation constant for ATP at saturation concentraapp tion of 15.33 lM GST-IjBa The apparent Vmax (V max) at 60 lM ATP and 50 nM IKK2 ... conditions (i.e MgCl2 with MnCl2 vs MgCl2 only) We therefore decided to perform a second investigation of the Km values in the presence of MnCl2, but with all other experimental conditions constant...
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Báo cáo khoa học: Fast set-up of doxycycline-inducible protein expression in human cell lines with a single plasmid based on Epstein– Barr virus replication and the simple tetracycline repressor ppt
... integration into genomic DNA At best, only 0.001% of cells generate clones Expansion of the few survivors takes weeks, particularly with selection and functional testing of individual clones In contrast, ... transfections) with this system, where no clones at all were generated in the end, even with the positive control plasmid supplied The major bottleneck in stable transfection of cells arises from the ... integrate the plasmid for protein expression into the target site Since the open reading frame for hygromycin resistance on the expression plasmid lacks a start codon, random integration into the genome...
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Báo cáo hóa học: " The role of single N-glycans in proteolytic processing and cell surface transport of the Lassa virus glycoprotein GP-C" ppt
... activation cleavage by SKI-1/S1P The differences between the precursor glycoprotein GP-C and the cleaved subunits GP-1 and GP2, not only with respect to N-glycosylation, remain an enigma since only the ... participated in the analysis of the results and drafted the manuscript OL helped to draft the manuscript and revised it critically WG designed the study, participated in the analysis of the results and helped ... N-glycosylation site is used for N-glycan attachment Next we determined the effect of the individual N-glycans on the maturation cleavage by analysing the presence of the cleaved subunit GP-2 Disruption...
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Báo cáo khoa học: "Radioprotective effects of fucoidan on bone marrow cells: improvement of the cell survival and immunoreactivity" doc
... biological effects on natural killer cells [13], hematopoietic stem cells [6], endothelial cells [11], and DCs [10] Although the effects of fucoidan on the mobilization of HPCs in bone marrow have ... 24 h and then irradiated once (1 Gy) After 24 h, cells were harvested and used for the cell death measurements Annexin V-FITC/PI staining and rhodamine 123 staining were used to confirm the protective ... indicate the cell percentage of quadrant (B) Numbers indicate the mean fluorescence intensity of all cells and brackets include the percentage of high expressed cells (M1) 362 Yun-Young Byon et al cellular...
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Báo cáo y học: "Formulation of a killed whole cell pneumococcus vaccine - effect of aluminum adjuvants on the antibody and IL-17 response" pps
... 107 cells (B) and 108 cells (C) per dose, or three times with WCA at 106 cells (D), 107 cells (E) and 108 cells (F) per dose The symbols represent individual mice (n = 4/group for WCA alone and ... with the antibody response and the T cell response, probably because there is insufficient release of antigen from the adjuvant to interact with B cells and for antigen processing and presentation ... present in the liquid regions These bacteria were moving freely by Brownian motion while the cells associated with the AH and AP adjuvant aggregates were stationary Thus, the observations by light...
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Báo cáo y học: "Undifferentiated giant cell type carcinoma of the gallbladder with sarcomatoid dedifferentiation: a case report and review of the literature" ppsx
... CAM5.2 (Table and Figures 2C and 3A) On the other hand, mesenchymal markers (vimentin, smooth-muscle actin: SMA) were strongly positive (Table 1, Figures 3B and 3C) The multinucleated cells showed ... http://jmedicalcasereports.com/jmedicalcasereports/article/view/3/3/6496 the presented case is that, despite the epithelioid morphology, the tumour cells demonstrated only focal immuno-positivity to cytokeratins (CAM5.2) and, at the same time, strong positivity ... However, in our case, there were no demonstrable foci of adenocarcinoma in the tumour Furthermore, the malignant giant cells were immunonegative to epithelial staining with only the focal staining...
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Báo cáo y học: " A statistical approach to estimating the strength of cell-cell interactions under the differential adhesion hypothesis" pptx
... for cells Next it considers interactions between cells and surrounding medium as Graner and Sawada did And finally it borrows from Graner and Glazier an additional constraint on the shape of cells ... (τi) are the corresponding cell types (or marks) The marks belong to a finite discrete space M In the section "Results and Discussion", we consider the case where cells may be of one of the three ... approaches, the model is based on a Hamiltonian function that describes cell- cell interactions The Hamiltonian function incorporates two terms: an interaction term and a shape constraint term The interaction...
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Báo cáo y học: "Systems biology-defined NF-κB regulons, interacting signal pathways and networks are implicated in the malignant phenotype of head and neck cancer cell lines differing in p53 status" pps
... ment in tumorigenesis (Figures and 4, and Table 1) Our experimental data confirmed and validated computational and bioinformatic predictions for NF-κB regulation and binding activity on the promoter ... cytokines (VEGF and GM-CSF are dominant in cells with mutant p53 status, which is consistent with either the loss of the negative regulation (PTEN and PPAR), or the suppression of NF-κB and other signal ... findings made with them in tumor tissue and serum specimens These include the demonstration of alterations and the biological and clinical significance of NF-κB activation and of multiple NF-κB-regulated...
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Molecular mechanisms of mechanosensing at cell cell and cell matrix adhesion 2
... other and to their environment is essential for the formation and functioning of tissues Cell- cell adhesion is one of the corner stones in the arising of multicellular organisms Depending on the ... - neuron cells on soft substrate, bone cells on hard substrates and adipocyte cells on substrate with intermediate rigidity [9] In addition, how cells interact with their mechanical environment ... pathological consequences Altered cell- cell and cell- matrix adhesion function is one of the hall marks of cancer [49, 50] The proper functions of cell adhesions, both in terms of adhesion strength and...
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Host cell pathogen interactions between erythrocytes and p falciparum apoptotic mimicry
... culture medium The cells were counted and seeded at x 105 cells per well in 12-well plates (Greiner Cellstar®) or at x 105 cells per well in 24-well plates (Greiner Cellstar®), depending on the experiment ... 2011) 1.4.5 Modulation of host cell apoptosis: protozoan parasites Parasite infection often leads to the death of the host cell and the ability to control how and when the cell dies is important ... allowed them to avoid detection by immune cells, in particular Kupffer cells, and the merozoites were safely transported out into the blood circulation for release and infection In humans, the malaria...
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The regulatory role of mixed lineage kinase 4 beta in MAPK signaling and ovarian cancer cell invasion
... to the degree of activation in response to stresses and environmental context of cells that favor the induction of either proliferation or apoptosis (Dhillon, et al., 2007) 1.5 The MAP3Ks The ... inducing transcriptional activation by translocating to the nucleus and activating transcription factors ERK1/2 is one of the main regulators of cell proliferation and transformation and the ERK signaling ... and MMP-9 consist of the following structural domains: the N-terminal signal peptide domain, the propeptide region, the catalytic domain containing the highly conserved zinc binding region, and...
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Cell phones and brain cancer unlocking the controversy
... 11 0.5 0.2 - 1.3 Cell- Phone Use and Risk of Glioma: Laterality of Tumor and Phone Use Tumor Left Right Phone Use* Left Right 18 10 17 P-value** 0.77 * Use for >= months before tumor diagnosis ... "brain tumors" rather than "brain cancers." Glioma: Most common type of brain cancer Gliomas are not a specific type of cancer Glioma is a general term for a group of tumors that start in glial cells ... all case -control studies) • Changes in cellular technology Changes in Cellular Networks and Phones • Analog versus digital – First cell phones were analog – Digital service began in the U.S in...
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Báo cáo khoa học: Human skin cell stress response to GSM-900 mobile phone signals In vitro study on isolated primary cells and reconstructed epidermis docx
... to cells In the second phase, a series of experiments using NHDFc was performed to confirm the effect of RFR exposure on Hsc70 On the one hand, the Hsc70 expression pattern was different and, on ... Dt, where c is the calorific capacity of the medium, T the temperature in Kelvin and t the time in seconds In line with the International Commission on Non-Ionizing Radiation Protection guidelines ... overexpression, i.e new protein synthesis of Hsp27, Hsp70 and Hsp90, in mitotic CHO cells [54] Taken together, these observations suggest that a large proportion of NHDFc cells may be in the mitotic...
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Báo cáo khoa học: Insulin resistance in human adipocytes occurs downstream of IRS1 after surgical cell isolation but at the 1 level of phosphorylation of IRS1 in type 2 diabetes pot
... don’t know the details of the molecular dysregulation in the target cells of the hormone Studies of cells from patients with the disease and nondiabetic subjects have demonstrated that mutations ... affected by cell isolation procedures and prolonged incubations in the same way as rat and mouse [26] cells The insulin-sensitivity for phosphorylation of the insulin receptor and the immediate ... examined the insulin responsiveness of the cells after overnight incubation (to avoid interference from the insulin resistance that we found when cells were analyzed directly) In these cells, the...
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Báo cáo khoa học: Collective behavior in gene regulation: The cell is an oscillator, the cell cycle a developmental process doc
... in the cycle This temporal organization extends to the synchronous gating of cells into the S phase DNA replication in these cells begins abruptly at the end of The cell as an oscillator the ... divided cells – the exponential growth distribution Further complicating the simulation or calculation of cell- cycle times within the gated synchrony population is the clear indication that newly ... oscillation that require a particular phase relationship between the TRAC and the cell cycle The release of H2S by a significant fraction of the cells in the fermenter ensures that no cells in the...
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scientific american - 2002 10 - vehicle of change - how fuel - cell cars could revolutionize the world
... concern for the toll that the nonfatal chronic conditions of aging take on mental and physical health as well as the economic consequences that are accompanying our rapidly expanding population ... cutting in the world, it seems, is done in Holland, by eminent and long practiced lapidaries, and the most famous of them, a person of the Jewish persuasion, was sent for, and consulted about the safety ... fuel cells represent the only feasible long-term path toward addressing the environmental, economic and geopolitical issues associated with de- pendence on petroleum The Bush administration, too,...
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báo cáo hóa học:" Identifying alemtuzumab as an anti-myeloid cell antiangiogenic therapy for the treatment of ovarian cancer" pdf
... effects on angiogenesis based on the elimination of VLC, Alemtuzumab may also inhibit angiogenesis via the elimination of B cells and mast cells from the tumor microenvironment; both of these cell ... CD14+ and CD3+ cells in peripheral blood mononuclear cells isolated from control (n = 3) and anti-CD52 immunotoxin treated mice (n = 5) demonstrating a reduction in the percentage of both CD14+ and ... confirm a critical role for these cells in tumorigenesis and indicate that these cells may be novel therapeutic targets for solid tumor therapy Genetic manipulations to inhibit or eliminate these...
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Báo cáo hóa học: " Comparison of T-cell receptor repertoire restriction in blood and tumor tissue of colorectal cancer patients" docx
... restriction, clonal expansions of γδ T -cells are not addressed Aim of the study was the application of mathematical markers to describe the global restriction of the αβ TCR repertoire in the different ... measurements and analyses NCN collected samples and participated in the conduct of the study ET participated in design and conduct of the study UK participated in design and conduct of the study DN conceived ... degradation were excluded from further analysis The aim of our study was the detection of TCR repertoire restriction due to T -cell expansions associated with significant TCR expression of the expanded...
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