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The Role of Brm, Brg-1, Snail 1 and Snail 2 in the Progression of Non-Melanoma Skin CancerBock, Vanessa Leonie January 2008 (has links)
Master of Medicine / Non-melanoma skin cancer (NMSC) is the most common human cancer worldwide. Squamous cell carcinoma (SCC) and basal cell carcinoma (BCC) make up almost all NMSC. SCC usually arises from actinic keratosis (AK) as a result of exposure to sunlight. SCC and AK provide a useful clinical model to investigate changes involved in the progression of NMSC. This project examines the expression of Brm, Brg-1, Snail 1 and Snail 2 in the progression of NMSC. Brm and Brg-1 are subunits of the SWI/SNF chromatin-remodelling complex which is involved in regulating the access of cell machinery to DNA by altering the structure of chromatin. It has been suggested that loss of this function is involved in carcinogenesis as the cell is unable to access to DNA normally in order to repair mutations or activate apoptosis. The loss of Brm or Brg-1 has been described in several human cancers. Snail 1 and Snail 2 are zinc-finger transcription factors that are known for their role in epithelial to mesenchymal transition (EMT), a process vital to embryological development. Increased expression of these factors leads to a loss of cell-cell adhesion and a migratory phenotype and has been described in some human cancers. In this project, double-label immunohistochemistry was used to determine the relative expression of these proteins in human SCC, BCC, AK and normal skin. The expression of Snail was unable to be determined due to poor specificity of the antibodies used. The expression of both Brm and Brg-1 proteins was found to be dramatically and consistently decreased in SCC and BCC when compared to normal skin and AK. This loss of Brm and Brg-1 occured as the tumour progressed from benign AK to malignant SCC. This finding suggests that the loss of either Brm or Brg-1 constitutes a key step in carcinogenesis. The results of this study identify Brm and Brg-1 as putative tumour suppressors involved in the progression of non-melanoma skin cancer from benign to malignant.
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Transposon free regions in vertebrate genomesCas Simons Unknown Date (has links)
No description available.
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Factors involved in DNA demethylationD'Alessio, Ana Catalina. January 1900 (has links)
Thesis (Ph.D.). / Written for the Dept. of Pharmacology and Therapeutics. Title from title page of PDF (viewed 2008/05/09). Includes bibliographical references.
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Technologies for genome-wide identification of Stat5 regulated genesLeBaron, Matthew J. January 2003 (has links) (PDF)
Thesis (Ph. D.)--Uniformed Services University of the Health Sciences, 2003. / Typescript (scanned image).
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Identification and characterization of matrix attachment regions in wheat /Christoffers, Michael J. January 1998 (has links)
Thesis (Ph. D.)--University of Missouri-Columbia, 1998. / Typescript. Vita. Includes bibliographical references (leaves 90-97). Also available on the Internet.
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Identification and characterization of matrix attachment regions in wheatChristoffers, Michael J. January 1998 (has links)
Thesis (Ph. D.)--University of Missouri-Columbia, 1998. / Typescript. Vita. Includes bibliographical references (leaves 90-97). Also available on the Internet.
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MyoD induces chromatin remodeling : implications for lineage determination and tumorigenesis /Gerber, Anthony Nicholas, January 1997 (has links)
Thesis (Ph. D.)--University of Washington, 1997. / Vita. Includes bibliographical references (leaves [79]-97).
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The analysis of the MCF7 cancer model system and the effects of 5-AZA-2'-Deoxycytidine treatment on the chromatin state using a novel microarray-based technology for high resolution global chromatin state measurementWeil, Michael Ryan. January 2006 (has links)
Thesis (Ph.D.) -- University of Texas Southwestern Medical Center at Dallas, 2006. / Partial embargo. Vita. Bibliography: References located at the end of each study.
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Histone modifications and chromatin dynamics of the mammalian inactive sex chromosomes titleKhalil, Ahmad M., January 2004 (has links)
Thesis (Ph.D.)--University of Florida, 2004. / Typescript. Title from title page of source document. Document formatted into pages; contains 102 pages. Includes Vita. Includes bibliographical references.
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In vitro and in vivo analysis of the establishment and maintenance of [beta]-globin locus chromatin structureLevings, Padraic P. January 2005 (has links)
Thesis (Ph.D.)--University of Florida, 2005. / Typescript. Title from title page of source document. Document formatted into pages; contains 103 pages. Includes Vita. Includes bibliographical references.
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