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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
191

Investigation of the molecular function of the nuclear oncoprotein HOX11 in human t-cell leukaemia.

Mansour Heidari January 2003 (has links)
HOXll, the prototypical member of the HOXll family (HOX11, HOXllLl and HOXllL2) was originally discovered as a transcriptional regulator aberrantly expressed in tumours with an immature T-cell phenotype (T-ALL) as a result of specific chromosomal translocations involving T-cell receptor loci. Subsequently, it was revealed that HOXll is required for normal spleen development since newborn Hoxll-/- mice exhibit asplenia. In both its normal and abnormal roles, HOXll has been postulated to function by binding regulatory elements within specific target genes to control gene transcription. However, very few genomic targets of HOX11 have been identified and little is known about its mode of action. In this study, we sought to further understand the role of HOX11 in controlling differentiation and cell growth by 1) determining the identity of genomic sequences that are directly bound by HOXll and 2) determining the identity of proteins which exist within HOXll-containing nuclear complexes. To identify direct HOXll target sequences, a whole genome PCR-based screening method was employed using immobilised recombinant HOXll that had first been expressed as a biologically active GST fusion protein. Using this approach, restriction enzyme-cleaved human genomic DNA was selected for high-affinity HOXll binding sites. Unexpectedly, almost all clones isolated contained sequences derived from satellite 2 DNA that, together with related satellite 3 DNA, is found on most chromosomes at transcriptionally inactive pericentromeric heterochromatin. The specific binding of HOXl1 to satellite 2 DNA was verified by bandshift assays using both recombinant HOXll protein and nuclear extract derived from the T-ALL cell line, ALL-SIL. DNA-protein complexes containing HOX11 were identified by their ablation upon addition of HOXl1 antibody. To confirm that HOXll associates with pericentromeric heterochromatin in vivo, HOXll was characterised in terms of its nuclear localisation during interphase in unsynchronised leukaemic T-cells (ALL-SIL) harbouring a translocation involving the HOXll locus. Using indirect immunofluorescence and confocal microscopy, HOXll antibody produced a punctate pattern of staining in the nucleus with discrete areas of dense staining superimposed on a diffuse distribution of HOXll protein. By dual staining, the bright HOXll foci correlated with centromeres since they overlapped with signals detected by an antibody specific for the centromeric protein CENP-B. Further evidence for a direct interaction of HOXll with satellite 2 DNA was provided by chromatin immunoprecipitation assay. In the presence of HOXll antibody, DNA fragments containing satellite 2 sequences were irnmunoprecipitated from sheared, cross-linked ALL-SIL chromatin but not from chromatin isolated from the HOXll-negative T-cell line PER-1 17. Finally, using a combination of immunoprecipitation with HOXll antibody, gel electrophoresis and mass peptide fingerprinting, a set of nuclear proteins were identified as potential HOXll interactors which are known to either localise to centromeric regions or act as regulators of gene expression. Together, these results implicate HOXl 1 in a functional interaction with centromeric heterochromatin, which may be a key feature of this oncoprotein in terms of both its T-cell transformation and transcriptional regulatory functions.
192

Biosynthesis of leukotriene B₄ in hematological malignancies /

Gudmundur Runarsson, January 2005 (has links)
Diss. (sammanfattning) Stockholm : Karol. inst., 2005. / Härtill 4 uppsatser.
193

Regulation of tissue factor expression in myeloid and monocytic leukaemia cells /

Tenno, Taavo, January 1900 (has links)
Diss. (sammanfattning) Uppsala : Univ., 2001. / Härtill 4 uppsatser.
194

Investigation of the molecular function of the nuclear oncoprotein HOX11 in human t-cell leukaemia /

Heidari, Mansour. January 2003 (has links)
Thesis (Ph.D.)--Murdoch University, 2003. / Thesis submitted to the Division of Health Sciences. Bibliography: leaves 177-201.
195

Role of KCNRG in B-CELL chronic lymphocytic leukemia

Birerdinc, Aybike. January 2008 (has links)
Thesis (Ph.D.)--George Mason University, 2008. / Vita: p. 175. Thesis director: Ancha Baranova. Submitted in partial fulfillment of the requirements for the degree of Doctor of Philosophy in Biosciences. Title from PDF t.p. (viewed Jan. 8, 2009). Includes bibliographical references (p. 156-174). Also issued in print.
196

Investigating the functional roles of Mcl-1 in apoptosis in mammalian cells /

Xiao, Kang. January 2009 (has links)
Thesis (Ph.D.)--Hong Kong University of Science and Technology, 2009. / Includes bibliographical references (p. 140-165).
197

The evolution of host range and receptor determinants for subgroup B feline leukemia viruses /

Boomer, Sarah M. January 1996 (has links)
Thesis (Ph. D.)--University of Washington, 1996. / Vita. Includes bibliographical references (leaves [92]-111).
198

Agarkultur undersøgelser af den humane granulopoiese hos normale og ved leukaemi

Knudtzon, Søren. January 1980 (has links)
Thesis (doctoral)--Københavns universitet.
199

Response of swine after feeding bovine lymphosarcoma material

Koller, Loren Douglas, January 1969 (has links)
Thesis (M.S.)--University of Wisconsin--Madison, 1969. / eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references.
200

Sjuksköterskans omvårdnad av barn med leukemi : En litteraturöversikt

Drayd Fuad, Bella, Schön, Linnea January 2020 (has links)
Leukemi är en av de vanligaste cancersjukdomar som drabbar barn och kan orsaka en tuff period för ett barn i sin utveckling, samtidigt som föräldrar och familj påverkas genom anpassning till en ny vardag. Sjuksköterskans omvårdnad av barn med leukemi blir en central roll för att lindra lidande och främja välbefinnande hos de cancersjuka barnen. Samtidigt ska sjuksköterskan finnas som stöd och tröst för familjen. Syftet med denna litteraturstudie är att beskriva sjuksköterskans omvårdnad av barn med leukemi utifrån sjuksköterskans-, föräldrars- och barnens perspektiv. Litteraturöversikt används som metod, där vetenskapliga artiklar söktes fram som besvarade syftet för examensarbetet. Elva vetenskapliga artiklar granskades och analysen resulterade i tre huvudkategorier; sjuksköterskans vårdande relation med barnen, föräldrars upplevelse av sjuksköterskans omvårdnad och sjuksköterskans användning av lek som kommunikationsmedel i omvårdnaden av barn med leukemi, med tillhörande subkategorier. Resultatet visar att barn uppskattar en god relation med sjuksköterskan som ökar deras trygghet och tillit för sin omvårdnad. Sjuksköterskans omvårdnadsarbete blir smidigare med en god vårdande relation till barnen. Många föräldrar har en liten kunskap om sitt barns sjukdom vid första kontakt med sjukvården efter ställd diagnos. Föräldrar uppskattar sjuksköterskans information om sjukdomen där informationen anpassas utefter föräldrarnas förståelse. Föräldrar uppskattar delaktighet i deras barns omvårdnadsplan, som ökar deras trygghet för omvårdnaden från sjuksköterskan. Leken är ett viktigt kommunikationsmedel mellan sjuksköterskan och barnen. Barn kan lättare genomgå svåra processer med hjälp av distraktion av leken. Slutsatsen av resultatet visar på att lek är en central del för sjuksköterskan som arbetar med barn. Sjuksköterskans kunskaper i information och bemötande för ett barn och dess familj är kärnan i omvårdnaden.

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