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Tesi sul tema "Cell migration"

Autore: Grafiati

Pubblicato: 4 giugno 2021

Ultima modifica: 25 luglio 2025

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1

Falk, Anna. "Stem cells : proliferation, differentiation, migration /." Stockholm, 2005. http://diss.kib.ki.se/2006/91-7140-497-X/.

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2

Sundström, Magnus. "Signal transduction in mast cell migration /." Uppsala : Acta Universitatis Upsaliensis : Univ.-bibl. [distributör], 2001. http://publications.uu.se/theses/91-554-5130-6/.

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3

SUN, Xue-Zhi, Sentaro TAKAHASHI, Chun GUI, et al. "Neuronal Migration and Neuronal Migration Disorder in Cerebral Cortex." Research Institute of Environmental Medicine, Nagoya University, 2002. http://hdl.handle.net/2237/2773.

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4

Chometon-Luthe, Gretel. "Epithelial cell migration on laminins." [S.l. : s.n.], 2005. http://deposit.ddb.de/cgi-bin/dokserv?idn=975579185.

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5

Burthem, John. "Hairy cell adhesion and migration." Thesis, University of Liverpool, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.240394.

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6

Dawson, M. "Mast cell migration in allergy." Thesis, University College London (University of London), 2012. http://discovery.ucl.ac.uk/1357935/.

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Abstract (sommario):

The symptomology associated with allergic diseases are a direct consequence of the release of pro-inflammatory mediators from mast cells following bi- or multivalent antigen cross-linking with the high affinity immunoglobulin (Ig) E receptor, FcεR1. Chemokines, small 8-15 kDa polypeptides, control the activation and recruitment of immune cells during the allergic response. Previous studies have demonstrated that co-stimulation by the chemokine, macrophage inflammatory protein-1α (Mip-1α) and cross-linking by IgE with antigen result in four phenomenon 1) enhanced degranulation in ex vivo conjun

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7

Erlandsson, Anna. "Neural Stem Cell Differentiation and Migration." Doctoral thesis, Uppsala : Acta Universitatis Upsaliensis : Univ.-bibl.[distributör], 2003. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-3546.

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8

Belotti, Yuri. "Microfluidic methods for investigating cell migration and cell mechanics." Thesis, University of Dundee, 2016. https://discovery.dundee.ac.uk/en/studentTheses/fb5ac03d-a752-45a1-8b95-37c8180dc7d9.

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In this thesis I explore how migratory properties of the model organism Dictyostelium discoideum are influenced by dimensionality and topology of the environment that surrounds the cell. Additionally, I sought to develop a microfluidic device able to measure mechanical properties of single cells with a sufficient throughput to account for the inherent heterogeneity of biological samples. Throughout this thesis I made use of microfabrication methods such as photo-lithography and soft-lithography, to develop ad hoc microstructured substrates. These tools enabled me to tackle different biological

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9

RUNYAN, CHRISTOPHER MICHAEL. "The Role of Cell Death in Germ Cell Migration." University of Cincinnati / OhioLINK, 2008. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1210732680.

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10

Shuib, Anis Suhaila. "Investigation of blood cells migration in large stenosed artery." Thesis, University of Edinburgh, 2012. http://hdl.handle.net/1842/6265.

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Atherosclerosis is one of the main diseases responsible for the high global mortality rate involving heart and blood vessel disorders. The build-up of fatty materials in the inner wall of the human artery prevents sufficient oxygen and nutrients reaching the organs of the body. Atherosclerosis is a chronic, long term condition, which develops and progresses over time; however, the disease does not present any symptoms until an advanced stage is reached, which results in potential permanent debility and sometimes sudden death. This thesis is concerned with the progression of atherosclerosis in

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11

Kozyrska, Katarzyna. "The mechanisms underlying mechanical cell competition and leader cell migration in mammalian epithelia." Thesis, University of Cambridge, 2019. https://www.repository.cam.ac.uk/handle/1810/289434.

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Cell competition is a form of cell-cell signalling that results in the elimination of less fit cells from a tissue by their fitter counterparts. I take advantage of an established in vitro model of cell competition using Madin-Darby canine kidney (MDCK) cells to shed insight into the molecular basis of cell competition in epithelial cells. In this system, silencing of the tumour suppressor scribble (scribKD) results in a 'loser' phenotype whereby scribKD cells are specifically eliminated from the monolayer by surrounding wild-type cells. More specifically, scribKD cells are compacted into tigh

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12

Sundström, Magnus. "Signal Transduction in Mast Cell Migration." Doctoral thesis, Uppsala University, Department of Genetics and Pathology, 2001. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-1474.

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<p>Mast cells are essential effector cells in the immune system as they release several inflammatory mediators. An accumulation of mast cells has been described in inflammatory conditions such as asthma and allergic rhinitis. Increased mast cell number, in the skin and other organs, is also a characteristic in mastocytosis, a disease without an effective treatment. One explanation for the increase in mast cell number is migration of mast cells in the tissue. In our studies we utilised mast cell lines, including HMC-1; cell lines transfected with the <i>c-kit</i> gene; and <i>in vitro</i> devel

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13

Olsson, Niclas. "Mast Cell Migration in Inflammatory Diseases." Doctoral thesis, Uppsala University, Department of Genetics and Pathology, 2003. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-3615.

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<p>Mast cells (MCs) are forceful multifunctional effector cells of the immune system. MCs are normally distributed throughout connective and mucosal tissues, but in several pathological conditions accumulation of MCs occur. This accumulation is probable due to directed migration of MCs and they are subjects for migration at least two different occations: 1) when they are recruited as progenitor cells from the blood into the tissue; and 2) when they as mature MCs are recruited to sites of inflammation. The aim of this study was to investigate MC migration to chemoattractants released <i>in vivo

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14

Suri, Rakesh Mark. "Dendritic cell maturation, migration and function." Thesis, University of Oxford, 1998. https://ora.ox.ac.uk/objects/uuid:47d2be37-0508-47d6-8b97-a3cf8e39f9f6.

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Dendritic cells (DC) have a fundamental role in priming naive T-cell responses and a suspected importance in the regulation of central and peripheral tolerance. Before DC can be responsibly used in human clinical trials, the generation of both immature and mature subsets must be standardised and their in vivo migratory and functional characteristics explored. The generation of human blood monocyte-derived DC in either fetal calf serum (PCS) or autologous plasma (HP) were compared. Phenotypic and functional assays demonstrated that DC derived from either system were similarly immature and under

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15

Kuo, Cheng-Hwa. "Bioengineering scaffolds for cell migration assay." Thesis, University of Cambridge, 2014. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.707983.

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16

Mills, Shirley. "Chemokine signalling in malignant cell migration." Thesis, University of East Anglia, 2018. https://ueaeprints.uea.ac.uk/69973/.

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Abstract (sommario):

Communication within and between cells is called signalling; elucidation of cell signalling in diseases, especially metastatic cancers, creates opportunities for developing therapeutic interventions. Signalling initiation occurs when a cell surface receptor binds a ligand; the signal then transmits via phosphorylation events through cytosolic signalling proteins to nuclear or effector proteins that orchestrate a cellular response. G-protein coupled receptors (GPCRs) are one type of receptor; a sub-family of GPCRs are chemokine receptors, their ligands, chemokines, can trigger directional migra

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17

Jefferyes, Samuel D. R. "Modelling shape fluctuations during cell migration." Thesis, University of Warwick, 2014. http://wrap.warwick.ac.uk/70995/.

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Abstract (sommario):

Cell migration is of crucial importance for many physiological processes, including embryonic development, wound healing and immune response. Defects in cell migration are the cause of chronic in ammatory diseases, mental retardation and cancer metastasis. Cell movement is driven by actin-mediated cell protrusion, substrate adhesion and contraction of the cell body. The emergent behaviour of the intracellular processes described above is a change in the morphology of the cell. This inspires the main hypothesis of this work which is that there is a measurable relationship between cell morpholog

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18

Limestoll, Scott R. "Discrete Modeling of Cell Island Migration." Case Western Reserve University School of Graduate Studies / OhioLINK, 2009. http://rave.ohiolink.edu/etdc/view?acc_num=case1228413862.

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19

Hatzikirou, H., K. Böttger, and A. Deutsch. "Model-based Comparison of Cell Density-dependent Cell Migration Strategies." Cambridge University Press, 2015. https://tud.qucosa.de/id/qucosa%3A39048.

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Here, we investigate different cell density-dependent migration strategies. In particular, we consider strategies which differ in the precise regulation of transitions between resting and motile phenotypes. We develop a lattice-gas cellular automaton (LGCA) model for each migration strategy. Using a mean-field approximation we quantify the corresponding spreading dynamics at the cell population level. Our results allow for the prediction of cell population spreading based on experimentally accessible single cell migration parameters.

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20

Xia, Weiliang, and 夏偉梁. "Role of cytokines in junction restructuring and germ cell migration inmammalian testes." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2006. http://hub.hku.hk/bib/B37101134.

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21

Eaton, Laura. "Skin dendritic cells : activation, maturation and migration." Thesis, University of Manchester, 2012. https://www.research.manchester.ac.uk/portal/en/theses/skin-dendritic-cells-activation-maturation-and-migration(0831ed5e-c580-406c-a404-4b1eb59b040d).html.

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Abstract (sommario):

Langerhans’ cells (LC) are the dendritic cells (DC) of the epidermis and, as sentinels of the immune system, act as a bridge between the innate and adaptive immune responses. When LC, and other DC, recognise an antigen or pathogen they mature and are stimulated to migrate to the lymph nodes, where they orchestrate immune responses. Pathogen derived toll-like receptor (TLR) ligands, and chemical allergens, are recognised as being potentially harmful and stimulate LC to mobilise and mature. Cytokine signals, including tumour necrosis factor (TNF)-α, interleukin (IL)-1β, and IL-18, all induce LC

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22

De, Pascalis Chiara. "Role of intermediate filaments in collective cell migration of glial cells." Thesis, Paris 6, 2017. http://www.theses.fr/2017PA066026.

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Abstract (sommario):

Pendant la morphogenèse, la réparation des tissus et le cancer, les cellules peuvent migrer en manière mésenchymateuse et collective. Le cytosquelette est essentiel pour la migration, mais alors que l'actine et les microtubules ont été largement étudiés, le rôle des filaments intermédiaires (FIs) est encore largement inconnu. La déplétion des FI diminue souvant la vitesse de migration et les FI sont fréquemment surexprimé dans les tumeurs invasives. Pour ces propriétés, nous supposons que les FIs peuvent jouer un rôle clé dans la mécanique cellulaire pendant la migration.Pour étudier le rôle d

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23

De, Pascalis Chiara. "Role of intermediate filaments in collective cell migration of glial cells." Electronic Thesis or Diss., Paris 6, 2017. http://www.theses.fr/2017PA066026.

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Abstract (sommario):

Pendant la morphogenèse, la réparation des tissus et le cancer, les cellules peuvent migrer en manière mésenchymateuse et collective. Le cytosquelette est essentiel pour la migration, mais alors que l'actine et les microtubules ont été largement étudiés, le rôle des filaments intermédiaires (FIs) est encore largement inconnu. La déplétion des FI diminue souvant la vitesse de migration et les FI sont fréquemment surexprimé dans les tumeurs invasives. Pour ces propriétés, nous supposons que les FIs peuvent jouer un rôle clé dans la mécanique cellulaire pendant la migration.Pour étudier le rôle d

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24

Xia, Weiliang. "Role of cytokines in junction restructuring and germ cell migration in mammalian testes." Click to view the E-thesis via HKUTO, 2006. http://sunzi.lib.hku.hk/hkuto/record/B37101134.

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25

Ng, Mei Rosa. "Mechanical Regulation of Epithelial Cell Collective Migration." Thesis, Harvard University, 2012. http://dissertations.umi.com/gsas.harvard:10578.

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Abstract (sommario):

Cell migration is a fundamental biological process involved in tissue development, wound repair, and diseases such as cancer metastasis. It is a biomechanical process involving the adhesion of a cell to a substratum, usually an elastic extracellular matrix, as well as the physical contraction of the cell driven by intracellular actomyosin network. In the migration of cells as a group, known as collective migration, the cells are also physically linked to one another through cell-cell adhesions. How mechanical interactions with cell substratum and with neighboring cells regulate movements durin

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26

Zhao, Zhiqiang. "Electric field-directed cell migration and endothelialization." Thesis, Available from the University of Aberdeen Library and Historic Collections Digital Resources. Restricted: no access until June 30, 2014, 2009. http://digitool.abdn.ac.uk:80/webclient/DeliveryManager?application=DIGITOOL-3&owner=resourcediscovery&custom_att_2=simple_viewer&pid=26544.

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27

Czuchra, Aleksandra. "Cdc42 and beta1 integrin in cell migration." Diss., lmu, 2005. http://nbn-resolving.de/urn:nbn:de:bvb:19-47081.

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28

Jiang, Pengju. "Filamin and its interactions in cell migration." Thesis, University of Oxford, 2007. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.487265.

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Human filamin is a large dimeric, modular protein made up of two calponin homology domains and twenty-four immunoglobulin-like (Ig_FLMN) domains. Filamin cross-links actin filaments and is deeply involved in cell migration processes, largely through interactions with plasma membrane proteins, especially integrins. In the work presented here, the structural properties of filamin fragments involved in integrin binding have been studied. NMR investigations of individual dissected Ig_FLMN modules from human . filamin A (called FLNa here) revealed that, although homologous at the sequence level, th

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29

Schioppa, Tiziana. "Effects of tumour hypoxia on cell migration." Thesis, Open University, 2006. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.434200.

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Abstract (sommario):

Cell adaptation to hypoxia requires activation of transcriptional programs that coordinate expression of genes involved in oxygen delivery (via- angiogenesis) and metabolic adaptation (via glycolisis). During migration and invasion of normal and pathological tissues, cells may encounter different oxygen levels, due to poor or altered vascularization, and recent evidence has suggested that chemotaxis is a cell function which may be affected by oxygen availability. This thesis describes how oxygen avaibility is a determinant parameter in the setting of chemotactic responsiveness to Stromal-Deriv

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30

Prentice, Mott Harrison Valentine. "Chemical and Physical Determinants of Cell Migration." Thesis, Harvard University, 2014. http://dissertations.umi.com/gsas.harvard:11494.

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Abstract (sommario):

The phenomenon of directed cell motion in response to external directional cues has drawn significant interest for more than a century, with the first recorded observations of bacterial chemotaxis at the end of the 19th century. Furthermore, movies generated by David Rogers while at Vanderbilt University of a peripheral blood neutrophil tracking a bacterium are a staple of any college biology class to demonstrate the phenomenon of eukaryotic chemotaxis. In just the last decade, our understanding of the biochemical mechanisms underlying the process of directed eukaryotic cell migration. As a re

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31

Bahm, Isabel. "PDGF signalling during Neural Crest Cell migration." Thesis, University College London (University of London), 2018. http://discovery.ucl.ac.uk/10041758/.

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Abstract (sommario):

Neural crest cells are a transient cell population, which migrates through the vertebrate embryonic body, and eventually gives rise to a many different cell types in the adult. Contact inhibition of locomotion (CIL) is a fundamental property of the collective migrating neural crest cells. CIL describes a process by which colliding cells change their direction upon collision and move away from each other, which has been linked to cell dispersion, boundary formation and metastasis. CIL is acquired in neural crest cells during Epithelial-to-Mesenchymal-Transition (EMT), by a switch in the express

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32

Vanderleyden, Ine. "Follicular regulatory T cell migration and differentiation." Thesis, University of Cambridge, 2019. https://www.repository.cam.ac.uk/handle/1810/288422.

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The germinal centre (GC) response is critical for generating highly effective humoral immune responses and immunological memory that forms the basis of successful immunisation. Control of the output of the GC response requires Follicular regulatory T (Tfr) cells, a subset of Foxp3+ Treg cells located within germinal centres. Tfr cells were first characterised in detail in 2011 and because of this relatively little is known about the exact role of Tfr cells within the GC, and the mechanism/s through which they exert their suppressive function. At the outset of this work, the major barrier to un

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33

Pinho, Ana Catarina Dinis de. "Unveiling the APP role in cell migration." Master's thesis, Universidade de Aveiro, 2013. http://hdl.handle.net/10773/11629.

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Mestrado em Biomedicina Molecular<br>A proteína precursora de amilóide de Alzheimer (PPA) é uma glicoproteína transmembranar com propriedades de adesão, descrita como reguladora positiva de migração celular. Embora ubíqua, a isoforma 695 da PPA está enriquecida no cérebro e pode funcionar na migração neuronal de novos neurónios que emergem de nichos neurogénicos existentes no cérebro adulto. No presente trabalho, objetivámos desvendar o papel da PPA e do seu fragmento secretado (sPPA) na migração celular, particularmente na migração de células do tipo neuronal, e os mecanismos molecular

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34

Van, Lonkhuyzen Derek Robert. "Novel modulators of cell growth and migration." Thesis, Queensland University of Technology, 2007. https://eprints.qut.edu.au/16549/1/Derek_Van_Lonkhuyzen_Thesis.pdf.

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Abstract (sommario):

Recent observations have demonstrated that Insulin-like Growth Factors (IGFs) are able to form complexes with the extracellular matrix protein Vitronectin (VN). These complexes of VN:IGFBP:IGF-I significantly enhance the proliferation and migration of various cell lines including skin and corneal epithelial cells, as well as primary cells derived from human skin and corneal tissue. These enhanced effects arise from co- activation of the IGF-binding type-1 IGF receptor (IGF-1R) as well as activation of the VN-binding αv-integrins. Further studies suggest that these complexes can replace the req

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Van, Lonkhuyzen Derek Robert. "Novel modulators of cell growth and migration." Queensland University of Technology, 2007. http://eprints.qut.edu.au/16549/.

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Abstract (sommario):

Recent observations have demonstrated that Insulin-like Growth Factors (IGFs) are able to form complexes with the extracellular matrix protein Vitronectin (VN). These complexes of VN:IGFBP:IGF-I significantly enhance the proliferation and migration of various cell lines including skin and corneal epithelial cells, as well as primary cells derived from human skin and corneal tissue. These enhanced effects arise from co- activation of the IGF-binding type-1 IGF receptor (IGF-1R) as well as activation of the VN-binding αv-integrins. Further studies suggest that these complexes can replace the req

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36

CRESTANI, MICHELE. "MECHANOPROPERTIES, HETEROGENEITY AND CELL MIGRATION IN GLIOBLASTOMA." Doctoral thesis, Università degli Studi di Milano, 2022. https://hdl.handle.net/2434/946015.

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Abstract (sommario):

Glioblastomas (GBMs) are primary brain tumors endowed with inter- and intra-patient heterogeneity and extreme di↵usivity. As heterogeneity is studied with genomic and transcriptomic analysis, little is known on how it is reflected on cell migration, mechanoproperties and motility modes. Generally, the tumor cells invade the brain moving on brain vasculature or white matter tracks: Patient-Derived Xenograft (PDX) has been a standard to reproduce them in order to study GBM invasion. However, PDX presents many disadvantages, including time consumption, hard standardization, high cost and e

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37

Capuana, Lavinia. "Role of PTEN during collective cell migration." Electronic Thesis or Diss., Sorbonne université, 2019. https://accesdistant.sorbonne-universite.fr/login?url=https://theses-intra.sorbonne-universite.fr/2019SORUS051.pdf.

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La migration cellulaire correspond à l’habilité des cellules de se déplacer d’un point à un autre. Certaines cellules se déplacent individuellement tandis que d’autres, sous l’influence de conditions physiologiques ou pathologiques, migrent collectivement en groupes étroitement associées. L’efficacité de ce processus dépend de la capacité des cellules à coordonner les étapes clés de la migration cellulaire. Tout d’abord les cellules établissent conjointement un axe de polarité avant-arrière pour restreindre l’activité protrusive à l’avant du groupe de cellules. Puis la régulation dynamique des

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38

Hu, Yang. "Regulation of dendritic cell and monocyte migration by interferons /." Access full-text from WCMC:, 2006. http://proquest.umi.com/pqdweb?did=1296095631&sid=1&Fmt=2&clientId=8424&RQT=309&VName=PQD.

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39

Brooks, Rebecca. "Coordinating cell-cell contacts with cell-matrix contacts in fibroblast migration during wound healing." Thesis, University of Bristol, 2016. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.690373.

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Abstract (sommario):

Following injury, fibroblasts migrate into the wound bed, where they play essential roles in effective wound healing through matrix deposition and contraction. Fibroblast migration relies on cell-matrix and cell-cell contacts, both of which are regulated by transmembrane receptors that are differentially regulated during wound healing. The fibronectin receptor syndecan-4 is increased upon wounding, which promotes fibroblast migration through activation of small GTPases and the recycling of integrin a5~1. Members of the Eph family of receptor tyrosine kinases, which regulate cellcell contacts,

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40

Wu, Xun. "Quantitative cell migration analysis of CCR7-mediated lymphocytes migration using a microfluidic device." The Royal Society of Chemistry, 2013. http://hdl.handle.net/1993/23886.

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Abstract (sommario):

Lymphocyte migration is crucial for adaptive immunity. CCR7 and its ligands mediate the migration and positioning of T cells in lymph nodes but the underlying mechanism is complex. The research in this thesis investigated CCR7-mediated T cell migration using a microfluidics-based approach. A microfluidic method suitable for quantitative migration analysis of genetically modified lymphocyte transfectants was developed. Using this method, I demonstrated chemotaxis of Jurkat transfectants expressing wild-type or C-terminal mutated CCR7 to a CCL19 gradient, and characterized the difference in tran

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41

Yang, Yongliang. "Emergent Leader Cells in Collective Cell Migration in In Vitro Wound Healing Assay." Diss., The University of Arizona, 2014. http://hdl.handle.net/10150/332896.

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Abstract (sommario):

Collective cell migration is critical for various physiological and pathological processes. In vitro wound healing assay has been widely used to study collective cell migration due to its technical simplicity and ability of revealing the complexity of collective cell migration. This project studies the function and importance of leader cells, the cells pulling cell monolayer migrating into free space, in endothelium and skin epithelial regeneration via plasma lithography enhanced in vitro wound healing assay. Despite leader cells have been identified in in vitro wound healing assays, little is

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42

Zhang, Congyingzi. "Morphological study of cell protrusions during redirected migration in human fibroblast cells." Bowling Green State University / OhioLINK, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=bgsu1367724529.

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43

Nilsson, Wiktor, and Emil Andersson. "Cytokine-induced immune cell migration towards tumour cells in a microchip environment." Thesis, KTH, Skolan för teknikvetenskap (SCI), 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-195835.

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Abstract (sommario):

The purpose of this project was to study the migration patterns of human immune cells in response to human renal cancer cells. This is useful in the study of different cancer treatments and the body’s own response to cancer. Cancer cells can release cytokines which can be detected by immune cells with the correct receptors. The specific type of immune cell that was studied, was the type of lymphocyte called Natural killer cell, abbreviated to NK cell. These lymphocytes have the characteristics that they can differentiate between a cancer cell and a healthy cell, and then have the capability to

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44

Koch, Britta. "Scaffold dimensionality and confinement determine single cell morphology and migration." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2016. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-194717.

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This thesis describes a highly interdisciplinary approach to discern the differing impact of scaffold dimensionality and physical space restrictions on the behavior of single cells. Rolled-up nanotechnology is employed to fabricate three-dimensional (3D) SiO/SiO2 microtube geometries of varied diameter, that after a biofunctionalization step are shown to support the growth of U2OS and six different types of stem cells. Cell confinement quantifiable through the given microtube diameter is tolerated by U2OS cells through a remarkable elongation of the cell body and nucleus down to a certain thre

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45

Blazakis, Konstantinos N. "Computational methods for investigating cell motility with applications to neutrophil cell migration." Thesis, University of Sussex, 2015. http://sro.sussex.ac.uk/id/eprint/56990/.

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Abstract (sommario):

Cell motility is closely linked to many important physiological and pathological events such as the immune response, wound healing, tissue differentiation, embryogenesis, in ammation, tumour invasion and metastasis. Understanding the ability of cells to alter their shape, deform and migrate is of vital importance in many biological studies. The rapid development in microscopy and imaging techniques has generated a huge amount of discrete data on migrating cells in vivo and in vitro. A key challenge is the use of discrete experimental observations to develop novel methods and algorithms that tr

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Thiam, Hawa-Racine. "Cell migration under confinement : how can a cell squeeze through narrow gaps ?" Thesis, Paris 5, 2014. http://www.theses.fr/2014PA05T048/document.

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Abstract (sommario):

La migration cellulaire possède deux volets antagonistes ; nécessaire à plusieurs processus physiologiques tels que la réponse immunitaire, elle peut également induire la mort d’un organisme en permettant les cellules cancéreuses d’envahir des organes sains. In vivo, la migration s’effectue dans des milieux complexes et confinés qui imposent une forte déformabilité aux cellules migratoires. Récemment, divers études ont montré que le noyau impose la limite de la déformabilité cellulaire lors de la migration en 3D (Wolf et al. JCB, 2013; Harada et al. JCB, 2013). Il a, en effet, été montré que l

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47

Yu, Jiaole, and 于皎乐. "Intrinsic and extrinsic factors affecting the migratory mechanisms of human mesenchymal stem cells." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2012. http://hdl.handle.net/10722/197130.

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The potential applications of mesenchymal stem cells (MSCs) have been widely advocated, however, many barriers hinder their clinical utilization. Enhancement of the homing of human MSCs (hMSCs) to the target tissues remains a clinical challenge. To overcome this hurdle, the mechanisms responsible for migration and engraftment of hMSCs have to be defined. My study aimed to explore both the underlying mechanisms and means of enhancing the migration of hMSCs. A graft versus host disease (GvHD) injury model and a novel orthotopic neuroblastoma model were established to delineate the distinct pr

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Munevar, Steven. "Mechanics of Fibroblast Migration: a Dissertation." eScholarship@UMMS, 2003. https://escholarship.umassmed.edu/gsbs_diss/36.

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Cell migration involves complex mechanical interactions between cells or between cells and the underlying substrate. Using a newly developed technique, "traction force microscopy", I have been able to visualize the dynamic characteristics of mechanical forces exerted by migrating fibroblasts such as magnitude, direction, and shear. For NIH 3T3 fibroblasts, I found that the lamellipodium provides nearly all of the force necessary for cell migration. A high shear zone separates the lamellipodium from the remainder of the cell body, suggesting that they are mechanically distinct entities. The tim

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Juremalm, Mikael. "The Role of Chemokines in Mast Cell Migration." Doctoral thesis, Uppsala University, Department of Genetics and Pathology, 2003. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-3273.

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Abstract (sommario):

<p>Mast cells are very potent multifunctional effector cells of the immune system normally distributed throughout connective tissues. An accumulation of mast cells has been described in several pathological conditions such as allergic- and autoimmune inflammations and in certain tumours. This necessitates two different processes: 1) Recruitment of mast cell progenitors from peripheral blood; 2) Accretion of mature mast cells at sites of inflammation and tumour areas. Both processes are depending on the local production of chemotactic factors. The aim of this study was to investigate the role o

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50

Kiosses, William B. "Endothelial cell migration and cytoskeletal organization in situ." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk2/tape16/PQDD_0012/NQ28288.pdf.

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