Gastrointestinal Stromal Tumours(GIST)
... • In normal cells activation of the of the c-kit tyrosine kinase requires the presence of an endogenous ligand (KIT ligand, ckit ligand, or stem cell factor) • Approx 80 % of GISTs have KIT protooncogene mutations that lead to activation of the c-kit receptor resulting in spontaneous receptor activa ...
... • In normal cells activation of the of the c-kit tyrosine kinase requires the presence of an endogenous ligand (KIT ligand, ckit ligand, or stem cell factor) • Approx 80 % of GISTs have KIT protooncogene mutations that lead to activation of the c-kit receptor resulting in spontaneous receptor activa ...
Andrei Fagarasanu Department of Cell Biology Supervisor: Dr
... enzymes necessary for its conjugation. Ubiquitination activity, and the abundance of ubiquitinated proteins increased in response to cues stimulating flagellar disassembly. However, though the group found an active ubiquitination system, there was no evidence of a flagellar-localized proteasome. The ...
... enzymes necessary for its conjugation. Ubiquitination activity, and the abundance of ubiquitinated proteins increased in response to cues stimulating flagellar disassembly. However, though the group found an active ubiquitination system, there was no evidence of a flagellar-localized proteasome. The ...
Guidleine on potency testing of cell based immunotherapy medicinal
... the biological activity of the active ingredient either at the level of drug substance and/or drug product. In principle the results of a potency assay should provide assurance that the amount of the active ingredient is sufficient to induce a meaningful response and that the amount is consistent fr ...
... the biological activity of the active ingredient either at the level of drug substance and/or drug product. In principle the results of a potency assay should provide assurance that the amount of the active ingredient is sufficient to induce a meaningful response and that the amount is consistent fr ...
Three-Dimensional Reconstruction of Tubular Structure of Vacuolar
... connecting planar contours that represent cross-sections through the objects (Fuchs et al. 1977). The obtained vacuolar structures could be observed from any angle, and measurements of their volume and surface area could be obtained. The 3-D vacuolar structures, which were reconstructed by SSR at ea ...
... connecting planar contours that represent cross-sections through the objects (Fuchs et al. 1977). The obtained vacuolar structures could be observed from any angle, and measurements of their volume and surface area could be obtained. The 3-D vacuolar structures, which were reconstructed by SSR at ea ...
Female Gametophyte Development in Flowering Plants
... the megasporocyte is manifested by the polar distribution of organelles, the dynamic deposition of callose, and the microtubule cytoskeleton. So far, the role of this polarity on megaspore development is unknown. The disruption of this polarity in megasporocytes was observed in switch1 (swi1)/dyad o ...
... the megasporocyte is manifested by the polar distribution of organelles, the dynamic deposition of callose, and the microtubule cytoskeleton. So far, the role of this polarity on megaspore development is unknown. The disruption of this polarity in megasporocytes was observed in switch1 (swi1)/dyad o ...
Autophagy_Marc
... The breakdown of cellular components promotes cellular survival during starvation by maintaining cellular energy levels. Autophagy allows the degradation and recycling of cellular components. During this process, targeted cytoplasmic constituents are isolated from the rest of the cell within a doubl ...
... The breakdown of cellular components promotes cellular survival during starvation by maintaining cellular energy levels. Autophagy allows the degradation and recycling of cellular components. During this process, targeted cytoplasmic constituents are isolated from the rest of the cell within a doubl ...
Arabidopsis CSLD5 Functions in Cell Plate
... Uniquely Regulated by the Cell Cycle If loss of CSLD activity impairs cell wall deposition during cell division in csld5, csld2/5, and csld3/5 mutants, these proteins should be present on forming cell plates. We therefore examined whether CSLD2, CSLD3, and CSLD5 were localized to forming cell plates ...
... Uniquely Regulated by the Cell Cycle If loss of CSLD activity impairs cell wall deposition during cell division in csld5, csld2/5, and csld3/5 mutants, these proteins should be present on forming cell plates. We therefore examined whether CSLD2, CSLD3, and CSLD5 were localized to forming cell plates ...
Saccharomyces cerevisiae Genes Involved in Survival of Heat Shock
... (Davidson and Schiestl 2001; Sakaki et al. 2003) whose identity and source in vivo have yet to be determined. The heat-shock response in cells, involving the increased transcription of a specific set of genes in response to an increase in temperature, is highly conserved. First noted in Drosophila as ...
... (Davidson and Schiestl 2001; Sakaki et al. 2003) whose identity and source in vivo have yet to be determined. The heat-shock response in cells, involving the increased transcription of a specific set of genes in response to an increase in temperature, is highly conserved. First noted in Drosophila as ...
A Simple 1-D Physical Model for the Crawling Nematode Sperm Cell
... Biochemical Regulation. The precise role played by pH in MSP turnover, bundling and adhesion is yet to be established. In the model, we use pH distribution as a marker for these processes. We assume that protons constantly appear at the cell body, and that protons leak out from the lamellipod, maint ...
... Biochemical Regulation. The precise role played by pH in MSP turnover, bundling and adhesion is yet to be established. In the model, we use pH distribution as a marker for these processes. We assume that protons constantly appear at the cell body, and that protons leak out from the lamellipod, maint ...
How and why cells grow as rods Open Access Fred Chang
... in Arabidopsis thaliana). E. coli and S. pombe even have similar aspect ratios (length is approximately four times width), despite a nearly 100-fold difference in volume and qualitatively different spatial patterns of growth. One speculation is that the shape and aspect ratio of these rods may have ...
... in Arabidopsis thaliana). E. coli and S. pombe even have similar aspect ratios (length is approximately four times width), despite a nearly 100-fold difference in volume and qualitatively different spatial patterns of growth. One speculation is that the shape and aspect ratio of these rods may have ...
Skb5, an SH3 adaptor protein, regulates Pmk1 MAPK signaling by
... activation processes (Jeffrey et al., 2007; Pan et al., 2015). MAPKKKs lie at the apex of the MAPK pathway kinase module and play a crucial role in transmitting upstream signaling to MAPKKs and MAPKs. MAPKKKs have been known to be inactivated through dephosphorylation by PP5 (von Kriegsheim et al., ...
... activation processes (Jeffrey et al., 2007; Pan et al., 2015). MAPKKKs lie at the apex of the MAPK pathway kinase module and play a crucial role in transmitting upstream signaling to MAPKKs and MAPKs. MAPKKKs have been known to be inactivated through dephosphorylation by PP5 (von Kriegsheim et al., ...
Chromosomes with Two Intact Axial Cores Are Induced by G2
... intact mammalian cells. Mammalian cells contain a checkpoint that imposes G2 arrest and blocks progression into mitosis if chromatin is not sufficiently decatenated (Downes et al., 1994). A drug block with any of several agents that interfere with topo II enzyme activity, such as VM-26 and ICRF-193, ...
... intact mammalian cells. Mammalian cells contain a checkpoint that imposes G2 arrest and blocks progression into mitosis if chromatin is not sufficiently decatenated (Downes et al., 1994). A drug block with any of several agents that interfere with topo II enzyme activity, such as VM-26 and ICRF-193, ...
Mitochondrial GFA2 Is Required for Synergid Cell
... The present study had two main objectives. The first was to determine the extent to which FG development and function are controlled/mediated by FG-expressed genes and to identify specific genes required by these developmental/reproductive steps. To address these issues, we have identified and chara ...
... The present study had two main objectives. The first was to determine the extent to which FG development and function are controlled/mediated by FG-expressed genes and to identify specific genes required by these developmental/reproductive steps. To address these issues, we have identified and chara ...
Cleavage furrow formation and ingression during animal cytokinesis
... the cortex. Time-lapse microscopy is needed to confirm these results and monitor microtubule behaviour during anaphase. In addition, this model cannot explain the furrowing phenotype observed in the zyg-9 and tac-1 mutants described above. Finally, if this hypothesis is correct, then one would expec ...
... the cortex. Time-lapse microscopy is needed to confirm these results and monitor microtubule behaviour during anaphase. In addition, this model cannot explain the furrowing phenotype observed in the zyg-9 and tac-1 mutants described above. Finally, if this hypothesis is correct, then one would expec ...
How Have Plant Cell Walls Evolved?1
... undertaking a kingdom-wide analysis of cell wall structures, especially since a truly comprehensive survey would have to encompass not only a very large number of species but also include multiple developmental stages, organs, tissues, and cell types (Fig. 1). Moreover, the biochemical techniques th ...
... undertaking a kingdom-wide analysis of cell wall structures, especially since a truly comprehensive survey would have to encompass not only a very large number of species but also include multiple developmental stages, organs, tissues, and cell types (Fig. 1). Moreover, the biochemical techniques th ...
Full-Text PDF
... and their associated DIMERISATION PARTNERS (DPs) which go on to promote the transcription of S-phase genes [12–14]. Genes involved in progression to G2/M phase, contain an M-phase-specific activator (MSA) element in their promoter region, but a clear-cut role for cis-elements and transcription activ ...
... and their associated DIMERISATION PARTNERS (DPs) which go on to promote the transcription of S-phase genes [12–14]. Genes involved in progression to G2/M phase, contain an M-phase-specific activator (MSA) element in their promoter region, but a clear-cut role for cis-elements and transcription activ ...
The Balance between Cell Division and Endoreplication Depends
... retinoblastoma (RBR)/E2F/DP pathway. Arabidopsis thaliana DPB is regulated by phosphorylation and targeted to proteasome-mediated proteolysis by the SCFSKP2A complex. In addition, DPB interacts in vivo with E2FC, because ectopic coexpression of E2FC and DPB produces severe developmental defects. To ...
... retinoblastoma (RBR)/E2F/DP pathway. Arabidopsis thaliana DPB is regulated by phosphorylation and targeted to proteasome-mediated proteolysis by the SCFSKP2A complex. In addition, DPB interacts in vivo with E2FC, because ectopic coexpression of E2FC and DPB produces severe developmental defects. To ...
Multiple mediators of plant programmed cell death: interplay of
... including cytotoxic drugs and DNA damage, can trigger caspase activation via the intrinsic pathway, mediated by cytochrome c release from the mitochondria. Alternatively, ER stress can directly induce caspase activity. Once activated, caspases may process and activate downstream caspases that cleave ...
... including cytotoxic drugs and DNA damage, can trigger caspase activation via the intrinsic pathway, mediated by cytochrome c release from the mitochondria. Alternatively, ER stress can directly induce caspase activity. Once activated, caspases may process and activate downstream caspases that cleave ...
Document
... All living things are made up of cells. The structures of different types of cells are related to their functions. Animal cells and plant cells have features in common, such as a nucleus, cytoplasm, cell membrane, mitochondria and ribosomes. Plant and algal cells also have a cell wall, and often hav ...
... All living things are made up of cells. The structures of different types of cells are related to their functions. Animal cells and plant cells have features in common, such as a nucleus, cytoplasm, cell membrane, mitochondria and ribosomes. Plant and algal cells also have a cell wall, and often hav ...
Light-Independent Cell Death Induced by
... accumulation of pheophorbide a in these mutants would lead to the generation of reactive oxygen species (ROS) under light conditions, which ultimately causes cell death, as observed in other chlorophyll biosynthesis mutants (Mock and Grimm 1997, Meskauskiene et al. 2001). To explain the cell death p ...
... accumulation of pheophorbide a in these mutants would lead to the generation of reactive oxygen species (ROS) under light conditions, which ultimately causes cell death, as observed in other chlorophyll biosynthesis mutants (Mock and Grimm 1997, Meskauskiene et al. 2001). To explain the cell death p ...
The mitogen-activated protein kinase cascade in rat islets of
... proteins ranging in molecular weight from 41-44kDa, are stimulated in response to a variety of extracellular growth factors and one major role of MAPKs is the regulation of cell proliferation [reviewed in I]. However, it is becoming apparent that MAPKs also function to transduce non-mitogenic signal ...
... proteins ranging in molecular weight from 41-44kDa, are stimulated in response to a variety of extracellular growth factors and one major role of MAPKs is the regulation of cell proliferation [reviewed in I]. However, it is becoming apparent that MAPKs also function to transduce non-mitogenic signal ...
immunohistological study of mannan polysaccharides in poplar stem
... Mannan polysaccharides serve as storage reserves in seeds and as structure elements in cell walls, but they may also perform other important functions during plant growth. As one of the major hemicelluloses in angiosperm wood, little is known about the presence and localization of mannan polysacchar ...
... Mannan polysaccharides serve as storage reserves in seeds and as structure elements in cell walls, but they may also perform other important functions during plant growth. As one of the major hemicelluloses in angiosperm wood, little is known about the presence and localization of mannan polysacchar ...
Scholarly Interest Report
... size in the brain and spinal cord. We are using the zebrafish model to address these questions, as it is well suited for a multifaceted approach that includes classical and molecular genetic analysis, as well as experimental manipulation of embryos. Zebrafish mutations that disrupt the genes encodin ...
... size in the brain and spinal cord. We are using the zebrafish model to address these questions, as it is well suited for a multifaceted approach that includes classical and molecular genetic analysis, as well as experimental manipulation of embryos. Zebrafish mutations that disrupt the genes encodin ...
Visualizing microtubule dynamics and membrane - UvA-DARE
... EMM tomography revealed the existence of at least two different kinds of vesicles during celll plate formation which could suggest the involvement of multiple membrane sources andd trafficking pathways driving cell plate formation (Segui-Simarro et al., 2004). Inn addition to these observations, rec ...
... EMM tomography revealed the existence of at least two different kinds of vesicles during celll plate formation which could suggest the involvement of multiple membrane sources andd trafficking pathways driving cell plate formation (Segui-Simarro et al., 2004). Inn addition to these observations, rec ...
Detection of Apoptosis in Paraffin Embedded Tissues: the Influence
... With increasing importance of apoptosis, many assays have been developed to detect apoptosis in cell populations and individual cells. Apoptotic cells are often proved using TUNEL assay based on detection of DNA strand breaks that occur during apoptosis. The method enables quantification of apoptoti ...
... With increasing importance of apoptosis, many assays have been developed to detect apoptosis in cell populations and individual cells. Apoptotic cells are often proved using TUNEL assay based on detection of DNA strand breaks that occur during apoptosis. The method enables quantification of apoptoti ...
Biochemical switches in the cell cycle
A series of biochemical switches control transitions between and within the various phases of the cell cycle. The cell cycle is a series of complex, ordered, sequential events that control how a single cell divides into two cells, and involves several different phases. The phases include the G1 and G2 phases, DNA replication or S phase, and the actual process of cell division, mitosis or M phase. During the M phase, the chromosomes separate and cytokinesis occurs.The switches maintain the orderly progression of the cell cycle and act as checkpoints to ensure that each phase has been properly completed before progression to the next phase. For example, Cdk, or cyclin dependent kinase, is a major control switch for the cell cycle and it allows the cell to move from G1 to S or G2 to M by adding phosphate to protein substrates. Such multi-component (involving multiple inter-linked proteins) switches have been shown to generate decisive, robust (and potentially irreversible) transitions and trigger stable oscillations. As a result, they are a subject of active research that tries to understand how such complex properties are wired into biological control systems.