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Articles 1 - 9 of 9

Full-Text Articles in Molecular Biology

Development And Characterization Of Novel Anti-Bat Monoclonal Antibodies For Studying Bat Immunity, Cailyn Cowan Jan 2017

Development And Characterization Of Novel Anti-Bat Monoclonal Antibodies For Studying Bat Immunity, Cailyn Cowan

Legacy Theses & Dissertations (2009 - 2024)

Abstract


A Tale Of Two Regulators : Characterization Of The Novel Transcription Factor Abmr And The Small Non-Coding Rna Mcr11 In Mycobacterium Tuberculosis, Roxanne Candice Girardin Jan 2017

A Tale Of Two Regulators : Characterization Of The Novel Transcription Factor Abmr And The Small Non-Coding Rna Mcr11 In Mycobacterium Tuberculosis, Roxanne Candice Girardin

Legacy Theses & Dissertations (2009 - 2024)

Genes of unknown function make up nearly one third of Mtb’s genome (Cole,


Influence Of The Pre-Initiation Complex On Mediator Recruitment In Saccharomyces Cerevisiae, Elisabeth Rose Knoll Jan 2017

Influence Of The Pre-Initiation Complex On Mediator Recruitment In Saccharomyces Cerevisiae, Elisabeth Rose Knoll

Legacy Theses & Dissertations (2009 - 2024)

The Mediator complex plays a central, highly conserved role in eukaryotic transcription by RNA Polymerase II (Pol II) by stimulating the cooperative assembly of a pre-initiation complex (PIC) and recruitment of Pol II for gene activation. Mediator recruitment has generally been ascribed to sequence-specific activators engaging subunits from the tail module which in turn function to recruit the middle and head for complete assembly at the UAS. Mediator subunits of the middle and head then bridge the enhancer to connect with the PIC at the core promoter. It is reported that Mediator recruitment at the UAS preferentially occurs at SAGA-dependent, …


Effects Of Antibiotic Treatment On The Expression Of Hepatic And Intestinal Cytochrome P450, Bruno Pereira De Carvalho Jan 2017

Effects Of Antibiotic Treatment On The Expression Of Hepatic And Intestinal Cytochrome P450, Bruno Pereira De Carvalho

Legacy Theses & Dissertations (2009 - 2024)

Expression of metabolic enzymes Cytochrome P450 (CYP) is highly affected by drugs, diseases, age and gender. The Intestinal microflora has been suggested to play a role in regulating CYP expression and antibiotic treatments would lead to changes in level and composition of microbiota in mouse gut. This study aims to analyze CYP expression changes in the liver and small intestine resulted from the reduction of intestinal microflora by antibiotics. Impacts on bile acid signaling were also analyzed for a better comprehension of the mechanisms involved in this modulation. Female C57BL/6J mice (9- to 13-week old) were treated with ampicillin (AMP) …


Structural And Functional Characterization Of An Unusual Camp Responsive Transcription Factor, Cmr, In Tb Complex Mycobacteria, Sridevi Ranganathan Jan 2017

Structural And Functional Characterization Of An Unusual Camp Responsive Transcription Factor, Cmr, In Tb Complex Mycobacteria, Sridevi Ranganathan

Legacy Theses & Dissertations (2009 - 2024)

Mycobacterium tuberculosis (Mtb), the causative agent of tuberculosis in humans, is an intracellular pathogen that infects millions of people every year. Mtb can survive inside the host for extended periods of time by sensing and adapting to the host environmental stressors. Transcriptional gene regulation plays a critical role in this adaptation. This dissertation focuses on understanding the structural and functional aspects of one such transcriptional regulatory unit, Cmr (Rv1675c), in Mtb.


The Role Of The Mediator Transcriptional Co-Activator Complex And Promoter Dependence In Ty1 Retrotransposition In Saccharomyces Cerevisiae, Alicia Salinero Jan 2017

The Role Of The Mediator Transcriptional Co-Activator Complex And Promoter Dependence In Ty1 Retrotransposition In Saccharomyces Cerevisiae, Alicia Salinero

Legacy Theses & Dissertations (2009 - 2024)

Retrotransposons are mobile genetic elements that replicate via an RNA intermediary and constitute a significant portion of most eukaryotic genomes. Saccharomyces cerevisiae has been invaluable to retrotransposon research due to the presence of an active retroelement known as Ty1. The mobility of Ty1 is regulated both positively and negatively by numerous host factors, including several subunits of the Mediator transcriptional co-activator complex. The Mediator core complex is organized into genetically and structurally defined head, middle, and tail modules, along with a transiently associated kinase module. We show that with the exception of the kinase module, deletion of non-essential subunits from …


Profiling Resistance To P450-Activated Food Carcinogens Using Toxicogenomic Approaches In Budding Yeast, Nicholas Stjohn Jan 2017

Profiling Resistance To P450-Activated Food Carcinogens Using Toxicogenomic Approaches In Budding Yeast, Nicholas Stjohn

Legacy Theses & Dissertations (2009 - 2024)

The human response to environmental carcinogens, some of which require metabolic activation, is highly variable. Factors such as environment, lifestyle, and genetics all influence the rates of exposure to and ultimate bioactivation of these compounds. Genetic factors include mutations to cell-cycle regulation, cell proliferation, and DNA repair genes; however, epidemiological studies may lack significance due to inadequate patient numbers. We used budding yeast as a model organism to determine genetic susceptibility to food-associated carcinogens, including aflatoxin (AFB1) and heterocyclic aromatic amines (HAAs). Budding yeast does not contain P450s that activate these compounds, so expression vectors were induced that contain human …


Retinal Disease Modeling And Drug Screening Using Stem Cell Derived Retinal Pigment Epithelium, Janmeet Singh Saini Jan 2017

Retinal Disease Modeling And Drug Screening Using Stem Cell Derived Retinal Pigment Epithelium, Janmeet Singh Saini

Legacy Theses & Dissertations (2009 - 2024)

The eye is an intricate organ, possessing sensory receptors in the retina that are involved in visual perception. The retina consists primarily of the neural layer, referred to as the neural retina, and the pigmented layer, referred to as the retinal pigment epithelium (RPE). The neural retina and RPE develop and mature in a coordinated manner, and depend on each other for survival. In a mature healthy retina, the retinal photoreceptor outer segments interdigitate with the RPE monolayer, and they co-exchange key supportive factors. RPE cells are indispensable for the health of the retina as they are involved in a …


Altered Lipid Metabolism And Adipocyte Activity Support Her2+ Breast Cancer Progression, Jason Wong Jan 2017

Altered Lipid Metabolism And Adipocyte Activity Support Her2+ Breast Cancer Progression, Jason Wong

Legacy Theses & Dissertations (2009 - 2024)

Overexpression of HER2 (ERBB2/neu) in breast cancer is an established clinical marker for aggressive disease and increased mortality. HER2+ breast cancers have increased protein levels of Human Epidermal Growth Factor Receptor 2 and overexpression of its coding gene, ERBB2. Many HER2+ tumors feature concomitant co-expression of the Nuclear Receptor subfamily 1, Group D, Member 1 (NR1D1/RevERBα) which regulates adipogenesis and circadian rhythm; the dysregulation of these two processes are known risk factors for breast cancer. HER2+ breast cancer cells have increased lipid synthesis, with evidence suggesting that NR1D1 is responsible for the upregulation of several genes in the de novo …