Dissertations / Theses on the topic 'Cells'
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Islam, Azharul. "Cell-walls of growing plant cells." Thesis, University of Westminster, 2013. https://westminsterresearch.westminster.ac.uk/item/8z033/cell-walls-of-growing-plant-cells.
Full textKoreeda, Satoshi. "Basal cell carcinoma cells resemble follicular matrix cells rather than follicular bulge cells." Kyoto University, 2004. http://hdl.handle.net/2433/147556.
Full textLeskinen, Markus. "Mast cell-mediated apoptosis of smooth muscle cells and endothelial cells." Helsinki : University of Helsinki, 2003. http://ethesis.helsinki.fi/julkaisut/laa/kliin/vk/leskinen/.
Full textCarnathan, Diane Gail Vilen Barbara J. "Dendritic cell regulation of B cells." Chapel Hill, N.C. : University of North Carolina at Chapel Hill, 2007. http://dc.lib.unc.edu/u?/etd,1200.
Full textTitle from electronic title page (viewed Mar. 26, 2008). "... in partial fulfillment of the requirements for the degree of Master of Science in the Department of Microbiology and Immunology, School of Medicine." Discipline: Microbiology and Immunology; Department/School: Medicine.
Iqbal, Syed Amir. "Asymmetric Cell Division in Mammalian Cells." Thesis, University of Manchester, 2009. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.503635.
Full textCadart, Clotilde. "Cell size homeostasis in animal cells." Thesis, Université Paris-Saclay (ComUE), 2017. http://www.theses.fr/2017SACLS103/document.
Full textThe way proliferating mammalian cells maintain a constant size through generations is still unknown. This question is however central because size homeostasis is thought to occur through the coordination of growth and cell cycle progression. In the yeast S. pombe for example, the trigger for cell division is the reach of a target size (Fantes, 1977). This mechanism is referred to as ‘sizer’. The homeostatic behavior of bacteria and daughter cells of the yeast S. cerevisiae on the contrary was recently characterized as an ‘adder’ where all cells grow by the same absolute amount of volume at each cell cycle. This leads to a passive regression towards the mean generation after generation (Campos et al., 2014; Soifer et al., 2016; Taheri-Araghi et al., 2015). These findings were made possible by the development of new technologies enabling direct and dynamic measurement of volume over full cell cycle trajectories. Such measurement is extremely challenging in mammalian cells whose shape constantly fluctuate over time and cycle over 20 hours long periods. Studies therefore privileged indirect approaches (Kafri et al., 2013; Sung et al., 2013; Tzur et al., 2009) or indirect measurement of cell mass rather than cell volume (Mir et al. 2014; Son et al., 2012). These studies showed that cells overall grew exponentially and challenged the classical view that cell cycle duration was adapted to size and instead proposed a role for growth rate regulation. To date however, no clear model was reached. In fact, the nature and even the existence of the size homeostasis behavior of mammalian cells is still debated (Lloyd, 2013).In order to characterize the homeostatic process of mammalian cells, we developed a technique that enable measuring, for the first time, single cell volume over full cell cycle trajectories (Cadart et al., 2017; Zlotek-Zlotkiewicz et al. 2015). We found that several cell types, HT29, HeLa and MDCK cells behaved in an adder-like manner. To further test the existence of homeostasis, we artificially induced asymmetrical divisions through confinement in micro-channels. We observed that asymmetries of sizes were reduced within the following cell cycle through an ‘adder’-like behavior. To then understand how growth and cell cycle progression were coordinated in way that generates the ‘adder’, we combined our volume measurement method with cell cycle tracking. We showed that G1 phase duration is negatively correlated with initial size. This adaptation is however limited by a minimum duration of G1, unraveled by the study of artificially-induced very large cells. Nevertheless, the adder behavior is maintained even in the absence of time modulation, thus suggesting a complementary growth regulatory mechanism. Finally, we propose a method to estimate theoretically the relative contribution of growth and timing modulation in the overall size control and use this framework to compare our results with that of bacteria. Overall, our work provides the first evidence that proliferating mammalian cells behave in an adder-like manner and suggests that both growth and cell cycle duration are involved in size control
BARBERI, CHIARA. "Myeloma cells induce the accumulation of activated CD94low NK cells by cell-to-cell contacts involving CD56 molecules." Doctoral thesis, Università degli studi di Genova, 2020. http://hdl.handle.net/11567/996094.
Full textLiu, Hao. "Dendritic cell development directed by stromal cells." Thesis, University of York, 2009. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.516409.
Full textCrawford, A. "How B cells influence T cell responses." Thesis, University of Edinburgh, 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.645118.
Full textEl-Sherbiny, Yasser Mohamed. "Natural killer cells and plasma cell neoplasia." Thesis, University of Leeds, 2007. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.438481.
Full textWorapamorn, Wilairat. "Cell-surface proteoglycan expression by periodontal cells /." St. Lucia, Qld, 2001. http://www.library.uq.edu.au/pdfserve.php?image=thesisabs/absthe16097.pdf.
Full textNie, Yingjie. "Defective dendritic cells and mesenchymal stromal cells in systemic lupus erythematosus and the potential of mesenchymal stromal cells as cell-therapy." Click to view the E-thesis via HKUTO, 2009. http://sunzi.lib.hku.hk/hkuto/record/B43278681.
Full textFalk, Anna. "Stem cells : proliferation, differentiation, migration /." Stockholm, 2005. http://diss.kib.ki.se/2006/91-7140-497-X/.
Full textGale, Zoe. "Glial cell line-derived neurotrophic factor effects on dental pulp cells and osteoblast-like cells." Thesis, University of Birmingham, 2012. http://etheses.bham.ac.uk//id/eprint/3268/.
Full textTabayoyong, William Borj. "Engraftment of embryonic stem cell-derived hematopoietic progenitor cells is regulated by natural killer cells." Diss., University of Iowa, 2011. https://ir.uiowa.edu/etd/1089.
Full textHou, Yuen-chi Denise. "A comparative study on the effects of feeder cells on culture of human embryonic stem cells." Click to view the E-thesis via HKUTO, 2009. http://sunzi.lib.hku.hk/hkuto/record/B43703604.
Full textLi, Jing. "Effects of intrinsic & extrinsic factors on the growth and differentiation of human mesenchymal stem cells." View the Table of Contents & Abstract, 2006. http://sunzi.lib.hku.hk/hkuto/record/B36434450.
Full textMeletis, Konstantinos. "Studies on adult stem cells /." Stockholm, 2006. http://diss.kib.ki.se/2006/91-7140-803-7/.
Full textRabodzey, Aleksandr. "Flow-induced mechanotransduction in cell-cell junctions of endothelial cells." Thesis, Massachusetts Institute of Technology, 2006. http://hdl.handle.net/1721.1/41586.
Full textIncludes bibliographical references (leaves 86-92).
Endothelial cells show an unexpected behavior shortly after the onset of laminar flow: their crawling speed decreases ~40% within the first 30 min, but only in a confluent monolayer of endothelial cells, not in subconfluent cultures, where cell-cell interactions are limited. This led us to study early shear effects on cell-cell adherens junctions. We found a 30±6% increase in the number of VE-cadherin molecules in the junctions. The strength of interactions of endothelial cells with surfaces coated with recombinant VE-cadherin protein also increased after laminar flow. These observations suggest that endothelial cell junction proteins respond to flow onset. The process of clustering may induce diffusion of monomers to the junction area, resulting in an overall increase in VE-cadherins in the junctions. To directly confirm the role of adherens junctions in the decrease in cell crawling speed, we used siRNA-knockdown technique to produce cells lacking VE-cadherin. These cells showed no decline in crawling speed under flow. Our interpretation is consistent with previous data on junction disassembly 8 hr after flow onset. The speed of endothelial cell crawling returns to the original level by that time, and junctional disassembly may explain that phenomenon. In order to understand better the change in VE-cadherin distribution under flow and during junction formation and remodelling, we developed a mathematical model of VE-cadherin redistribution in endothelial cells. This model allowed us to develop a quantitative framework for analysis of VE-cadherin redistribution and estimate the amount of protein in the junctions and on the apical surface. In addition to that, the model explains rapid junction disassembly in the leukocyte transmigration and junction formation in subconfluent cells.
(cont.) These studies show that intercellular adhesion molecules are important in the force transmission and shear stress response. Their role, however, is not limited to flow mechanotransduction. Intercellular force transmission has an important application - organ development and, specifically, angiogenesis. We studied the role of VE-cadherin in vessel development in HUVECs and showed that VE-cadherin-null cells do not form vessels in the in vitro assay. This observation confirms the important role of intercellular force transmission in response to external force caused by flow or exerted by other cells.
by Aleksandr Rabodzey.
Ph.D.
Sarvi, Sana. "Small cell lung cancer and cancer stem cell-like cells." Thesis, University of Edinburgh, 2014. http://hdl.handle.net/1842/9542.
Full textJoseph, Krishna Sathyamurthy. "Hybrid direct methanol fuel cells." Thesis, Georgia Institute of Technology, 2012. http://hdl.handle.net/1853/44777.
Full textHou, Yuen-chi Denise, and 侯元琪. "A comparative study on the effects of feeder cells on culture of human embryonic stem cells." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2009. http://hdl.handle.net/10722/210317.
Full textEgawa, Haruto. "Peripheral blood mononuclear cells in early pregnancy promote invasion of human choriocarcinoma cell line, BeWo cells." Kyoto University, 2004. http://hdl.handle.net/2433/147458.
Full textClayton, Zoe Ellen. "The pro-angiogenic properties of induced pluripotent stem cell derived endothelial cells and induced endothelial cells." Thesis, The University of Sydney, 2017. http://hdl.handle.net/2123/17300.
Full textAarum, Johan. "Interactions between mouse CNS cells: microglia and neural precursor cells /." Stockholm, 2004. http://diss.kib.ki.se/2004/91-7140-120-2/.
Full textGustavsson, Natalia. "Cell-Specific Ca2+ Response in Pancreatic ß-cells." Doctoral thesis, Umeå universitet, Histologi med cellbiologi, 2005. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-661.
Full textLiu, Qing. "Curcumin induces cell inhibition in breast cancer cells." Click to view the E-thesis via HKUTO, 2006. http://sunzi.lib.hku.hk/hkuto/record/B38688608.
Full textChisholm, S. E. "Natural killer cell recognition of virally infected cells." Thesis, University of Cambridge, 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.597615.
Full textNadal-Melsio, Elisabet. "Regulatory T cells after allogeneic stem cell transplantation." Thesis, Imperial College London, 2010. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.523746.
Full textLiu, Qing, and 劉晴. "Curcumin induces cell inhibition in breast cancer cells." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2006. http://hub.hku.hk/bib/B38688608.
Full textLi, Victor Chun. "The Cell Cycle and Differentiation in Stem Cells." Thesis, Harvard University, 2012. http://dissertations.umi.com/gsas.harvard:10536.
Full textSnell, Daniel C. "Cell-surface molecules of developing chicken B cells." Thesis, University of Reading, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.326977.
Full textMahajan, Simmi. "Development of T cell help for B cells." Thesis, University of Edinburgh, 2005. http://hdl.handle.net/1842/12548.
Full textMavin, Emily. "Regulatory T cells in haematopoietic stem cell transplantation." Thesis, University of Newcastle upon Tyne, 2014. http://hdl.handle.net/10443/2731.
Full textHarrison, Sean. "Liver cell types derived from pluripotent stem cells." Thesis, University of Manchester, 2014. https://www.research.manchester.ac.uk/portal/en/theses/liver-cell-types-derived-from-pluripotent-stem-cells(7f39c3ec-facd-4c06-ab9a-7c171313eb05).html.
Full textWang, Qiufan Claire, and 王秋帆. "Mechanisms of junctional restructuring at the sertoli-sertoli and sertoli-germ cell interfaces during spermatogenesis." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2008. http://hub.hku.hk/bib/B40887686.
Full textWang, Qiufan Claire. "Mechanisms of junctional restructuring at the sertoli-sertoli and sertoli-germ cell interfaces during spermatogenesis." Click to view the E-thesis via HKUTO, 2008. http://sunzi.lib.hku.hk/hkuto/record/B40887686.
Full textWu, Yue. "Generating Beta-cells from liver cells." Thesis, King's College London (University of London), 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.420423.
Full textChowdhury, Azazul Islam. "Role of Cell-cell Interactions and Palmitate on β-cells Function." Doctoral thesis, Uppsala universitet, Institutionen för medicinsk cellbiologi, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-230841.
Full textWang, Wei. "Modulation of immune cell responses by small cell lung cancer cells." Thesis, King's College London (University of London), 2016. https://kclpure.kcl.ac.uk/portal/en/theses/modulation-of-immune-cell-responses-by-small-cell-lung-cancer-cells(7bdc85c2-acd8-4f13-9d2b-e2ce07d1567b).html.
Full textMurray, Nicholas. "Costimulation of T cells and its role in T cell recognition of malignant colorectal cells in vitro." Thesis, University of Oxford, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.301247.
Full textWang, Yenfeng. "The role of mast cells in foam cell formation, growth inhibition, and apoptosis of smooth muscle cells." Helsinki : University of Helsinki, 1999. http://ethesis.helsinki.fi/julkaisut/mat/bioti/vk/wang/.
Full textBigdeli, Narmin. "Derivation, characterization and differentiation of feeder-free human embryonic stem cells /." Göteborg : Department of Clinical Chemistry and Transfusion Medicine, Institute of Biomedicine at Sahlgrenska Academy, University of Gothenburg, 2010. http://hdl.handle.net/2077/22353.
Full textHuynh, The Hung. "Establishment of bovine mammary epithelial cell lines : an in vitro model for lactation." Thesis, McGill University, 1990. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=60426.
Full textMAC-T cells grew rapidly on plastic substratum with a doubling time of approximately 17 hours and became differentiated when grown on floating collagen gels in the presence of prolactin. The differentiated phenotype was characterized to include (1) the ability to form secretory domes with a lumen from a pavement of columnar cells; (2) increased casein mRNA abundance; (3) increased alpha S and beta casein secretion; (4) increased number and size of casein secretory vesicles; and (5) increased lactose synthesis and secretion.
Offiah, I. "Cross-talk between human T cells, mast cells and conjunctival epithelial cells." Thesis, University College London (University of London), 2012. http://discovery.ucl.ac.uk/1348498/.
Full textVasu, Srividya. "Molecular mechanisms of toxicity and cell damage in clonal human and mouse pancreatic beta cells, alpha cells, and intestinal L cells exposed to diabetic milieu." Thesis, Ulster University, 2012. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.646400.
Full textWong, Ching-hang. "Cell-cell interactions and cell junction dynamics in the mammalian testis." Click to view the E-thesis via HKUTO, 2005. http://sunzi.lib.hku.hk/hkuto/record/B31993084.
Full textTurhan, Ali G. "Clonality of normal and malignant hemopoiesis." Thesis, University of British Columbia, 1990. http://hdl.handle.net/2429/31369.
Full textMedicine, Faculty of
Pathology and Laboratory Medicine, Department of
Graduate
Gronthos, Stan. "Stromal precursor cells : purification and the development of bone tissue." Title page, contents and abstract only, 1998. http://web4.library.adelaide.edu.au/theses/09PH/09phg8757.pdf.
Full textO'Malley, James. "Novel cell surface markers identify routes to iPS cells." Thesis, University of Edinburgh, 2014. http://hdl.handle.net/1842/8883.
Full text