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Full-Text Articles in Life Sciences
The Role Of Reactive Oxygen Species In The Accumulation Of Driver Mutations In B Cell Acute Lymphoblastic Leukemia, Mia P. Sams
The Role Of Reactive Oxygen Species In The Accumulation Of Driver Mutations In B Cell Acute Lymphoblastic Leukemia, Mia P. Sams
Electronic Thesis and Dissertation Repository
B cell acute lymphoblastic leukemia (B-ALL) is the most prevalent type of cancer in young children and is associated with recurrent mutations and high levels of reactive oxygen species (ROS). The antioxidant N-acetylcysteine was tested for its ability to prolong lifespan of a mouse model of B-ALL and reduce frequency of mutations. Mice treated with 1g/L of N-acetylcysteine in drinking water were found to have delayed onset of B-ALL at 11 weeks of age and changes in gene expression relating to B cell development, calcium-apoptosis signaling, and pathways in cancer, although no differences in lifespan were observed. Tumours from treated …
Meningeal B Cells In Central Nervous System Autoimmunity: Their Phenotype And Susceptibility To Therapeutic Depletion, Yodit Tesfagiorgis
Meningeal B Cells In Central Nervous System Autoimmunity: Their Phenotype And Susceptibility To Therapeutic Depletion, Yodit Tesfagiorgis
Electronic Thesis and Dissertation Repository
B cell depleting therapies have been effective in the treatment of Multiple Sclerosis (MS), yet to date little is known about how B cells promote disease pathogenesis. B cells can be found invading the meninges around the brain and spinal cord in MS, where they cluster in association with T cells. These meningeal B cells clusters are often adjacent to demyelinating lesions suggesting this may be a site where B cells are exerting their pathogenic effects. The purpose of this thesis was to understand the contribution of meningeal B cells to central nervous system (CNS) autoimmunity, by characterizing their phenotype …
The Role Of Spi-B And Pu.1 Transcription Factors In B Cell Development And In Suppression Of Leukemogenesis, Carolina Reyes Batista
The Role Of Spi-B And Pu.1 Transcription Factors In B Cell Development And In Suppression Of Leukemogenesis, Carolina Reyes Batista
Electronic Thesis and Dissertation Repository
The E26 transformation-specific transcription factors PU.1 and Spi-B are required for B cell maturation within the bone marrow. PU.1 expression is first detected in hematopoietic stem and progenitor cells, whereas Spi-B levels arise as early as the pro-B cell stage. The expression levels of both factors are maintained as B cells progress in development, and the lack of PU.1 and Spi-B at early stages impairs B cell development and can lead to B-cell leukemia. We hypothesized that PU.1 and Spi-B control events associated with the transition from high to low proliferative stages in B cell development and the absence of …