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Full-Text Articles in Life Sciences
Energetic Cost And Physiological Trade-Offs, Heba A. Ali
Energetic Cost And Physiological Trade-Offs, Heba A. Ali
FIU Electronic Theses and Dissertations
Understanding how organisms allocate limited resources across physiological systems is a major challenge in biology. This study revealed that high energetic demand of electric signals of male electric fish (Brachyhypopomus gauderio) is matched by a metabolic trade-off with other cellular functions. We used thyroxine (T4) to modulate the fish’s signal metabolism, partitioned the energy budget pharmacologically, and measured energy consumption using oxygen respirometry. In males, total energy consumption was unchanged pre- and post-T4 treatment, while signal metabolism rose and the standard metabolic rate fell in an even trade-off. Total metabolism in females did the opposite. Under T4, the …
Identifying The Cell Composition And Clonal Diversity Of Supratentorial Ependymoma Using Single Cell Rna-Sequencing, James He
University Scholar Projects
Ependymoma is a primary solid tumor of the central nervous system. Supratentorial ependymoma (ST-EPN), a subtype of ependymomas, is driven by an oncogenic fusion between the ZFTA and RELA genes in 70% of cases. We introduced this fusion into neural progenitor cells of mice embryos via in utero electroporation of a non-viral binary piggyBac transposon system containing ZFTA-RELA. From preliminary data in the LoTurco lab, inducing the expression of ZFTA-RELA into different neural progenitor cells produces tumors of varying lethality and cellular composition. To define the cellular composition and subclonal diversity of ST-EPN tumors, we used single cell RNA-sequencing to …
The Roles Of Capsular Polysaccharides And Diet In The Immune Response To A Bacteroides Thetaiotaomicron Antigen, Samantha Hsieh
The Roles Of Capsular Polysaccharides And Diet In The Immune Response To A Bacteroides Thetaiotaomicron Antigen, Samantha Hsieh
Arts & Sciences Electronic Theses and Dissertations
The environment is well recognized to modulate immune responses within the intestinal mucosa in a general fashion. However, the connection between the effects of the environment on the immune response directed towards specific intestinal microbes is unclear. Progress in this area has been hampered by the lack of a model system in which the immune responses to a specific antigen in a gut symbiont can be examined. To this end, we developed a novel CD4+ T cell model, termed BθOM, that is specific for a dominant antigen in the gut symbiont Bacteroides thetaiotaomicron (B. theta). In this work, we use …
Temperature-Dependent Macrophage Activity In Rainbow Trout, Danica Mcgrevey
Temperature-Dependent Macrophage Activity In Rainbow Trout, Danica Mcgrevey
Biological Sciences Undergraduate Honors Theses
Fever is an essential component of the immune response. Fever enhances immune responses as well as creates an environment in which the body has advantages over pathogens. Macrophages are often the first cells that come in contact with pathogens, as they reside in tissues. They are important for their engulfment of pathogens that results in the digestion of the pathogen, but they also produce nitric oxide and cytokines that contribute to immune response in a variety of ways, including initiating adaptive immunity and directing the production and activity of other immune cells. We were curious about macrophages from other temperature …
Assessing The Durability Of The Immune Response Induced By Rivax®, A Ricin Subunit Vaccine, Hayley Lynn Novak
Assessing The Durability Of The Immune Response Induced By Rivax®, A Ricin Subunit Vaccine, Hayley Lynn Novak
Legacy Theses & Dissertations (2009 - 2024)
Assessing the performance and durability of the antibody response in animal models can assist in the development of biodefense vaccines. Ricin is one of the most toxic biological agents known and has been a public health issue for years. Since ricin is easily manufactured and a deadly toxin, rational vaccine design and immunotherapeutic optimization have been explored. RiVax® is a candidate subunit vaccine with a modified A-chain of ricin toxin that was formulated to remove ricin's biological activity. It is thought that RiVax® could serve as a prophylactic that would induce humoral- and cell-mediated immunological responses that elicit protective antigens …