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Articles 1 - 8 of 8
Full-Text Articles in Cell and Developmental Biology
Novel Roles Of Tobacco-Associated Genes Underlying Disparate Survival In Appalachian Head And Neck Squamous Cell Carcinoma, Brenen William Papenberg
Novel Roles Of Tobacco-Associated Genes Underlying Disparate Survival In Appalachian Head And Neck Squamous Cell Carcinoma, Brenen William Papenberg
Graduate Theses, Dissertations, and Problem Reports
Head and neck squamous cell carcinoma (HNSCC) is an aggressive neoplasm primarily caused by tobacco consumption or human papillomavirus (HPV) infection. Incidence and mortality rates for HNSCC vary geographically. Appalachian residents consume tobacco products to a greater extent than national averages, a risk factor known to promote HPV-negative HNSCC through increased genomic instability. Male Appalachian patients display significantly worse relative survival than Appalachian females or non-Appalachian residents of either sex. Secondary analysis of available cancer registry outcome data from 2007-2013 indicates that white males with stage IV oral cavity/pharyngeal (OC/P) HNSCC are responsible for the decreased male survival observed within …
Grainyhead-Like 2 Sensitizes Cells To Natural Killer Cell Cytotoxicity And Promotes The Interferon Response, Ian Philip Macfawn
Grainyhead-Like 2 Sensitizes Cells To Natural Killer Cell Cytotoxicity And Promotes The Interferon Response, Ian Philip Macfawn
Graduate Theses, Dissertations, and Problem Reports
Our research determined that the epithelial master transcription factor Grainyhead-like 2 (GRHL2) promotes sensitivity to Natural Killer (NK) cell-mediated killing, and modulates the interferon I (IFN-I) response of epithelial cells. Immune surveillance by NK cells constitutes a major selective pressure for circulating tumor cells. Epithelial (GRHL2-expressing) cells exhibited significantly higher rates of NK conjugation, a crucial step in direct cell-mediated cytotoxicity. Mechanistically, GRHL2 upregulates expression of intercellular adhesion molecule 1 (ICAM-1), a cell surface molecule critical for NK to target cell synaptogenesis. GRHL2 epigenetically regulates gene expression, and we found that GRHL2 mutant proteins unable to interact with the epigenetic …
Role Of Ciliary Proteins Adp Ribosylation Factor Like Gtpase 13b (Arl13b) And Bardet-Biedl Syndrome-8 (Bbs8) In Photoreceptor Outer Segment Morphogenesis, Maintenance, And Viability, Tanya L. Dilan
Graduate Theses, Dissertations, and Problem Reports
Photoreceptor neurons are modified primary cilia with an extended ciliary compartment known as the outer segment (OS). The mechanisms behind the elaboration of photoreceptor cilia, OS morphogenesis, and maintenance remain poorly understood. In this work, we focused on dissecting the role of two ciliary proteins, the small GTPase ADP-ribosylation factor-like GTPase 13B (ARL13B) and Bardet-Biedl Syndrome-8 (BBS8) in the context of photoreceptor biology. Both BBS8 and ARL13B are linked to defects in ciliogenesis (cilia development) and Retinitis Pigmentosa (vision loss). ARL13B is implicated in regulating ciliary length, and BBS8 is part of the Bardet-Biedl Syndrome complex (BBSome); the BBSome is …
Developmental Mechanisms For The Diversification Of Polyphenic Morphs In The Head Horn Of Onthophagine Beetles (Coleoptera: Scarabaeidae Onthophagus Taurus): Plasticity Through Nutrition, Logan Paul Zeigler
Graduate Theses, Dissertations, and Problem Reports
Developmental plasticity is the phenotypic variation between organisms that is caused by environmental interactions affecting the developmental systems of organisms. The research focused primarily on nutrition-responsive developmental plasticity. In this research we used the nutritionally determined head horn development of Onthophagus taurus to better understand the developmental mechanisms and genetic underpinnings of nutrition-responsive trait development. We focused specifically on altering the availability of specific nutrition-related primary metabolites, cholesterol and palmitic acid, identified in the activity of The Hedgehog pathway, a critical pathway in head horn development. By altering diet composition using cholesterol, reducing transcript expression of an acyltransferase gene, rasp …
The Exploration Of Nanotoxicological Copper And Interspecific Saccharomyces Hybrids, Matthew Joseph Winans Phd
The Exploration Of Nanotoxicological Copper And Interspecific Saccharomyces Hybrids, Matthew Joseph Winans Phd
Graduate Theses, Dissertations, and Problem Reports
Nanotechnology takes advantage of cellular biology’s natural nanoscale operations by interacting with biomolecules differently than soluble or bulk materials, often altering normal cellular processes such as metabolism or growth. To gain a better understanding of how copper nanoparticles hybridized on cellulose fibers called carboxymethyl cellulose (CMC) affected growth of Saccharomyces cerevisiae, the mechanisms of toxicity were explored. Multiple methodologies covering genetics, proteomics, metallomics, and metabolomics were used during this investigation. The work that lead to this dissertation discovered that these cellulosic copper nanoparticles had a unique toxicity compared to copper. Further investigation suggested a possible ionic or molecular mimicry …
Breast Cancer Associated Muscle Fatigue: Novel Targets To Improve Survival And Quality Of Life, Hannah Elizabeth Wilson
Breast Cancer Associated Muscle Fatigue: Novel Targets To Improve Survival And Quality Of Life, Hannah Elizabeth Wilson
Graduate Theses, Dissertations, and Problem Reports
Women diagnosed with breast cancer (BC) currently represent the largest group of cancer survivors in the United States, accounting for over 20% of those living after a cancer diagnosis. Most BC survivors report an unusual degree of fatigue, which can present prior to diagnosis and continue for many years after treatment cessation. Recent studies show that deficits in muscle function predict shorter survival in cancer, perhaps due to the fact that fatigue is known to reduce a patient’s tolerance to anti-cancer therapies. Therefore, improving muscle function in BC patients has the potential to improve both quality of life and survival …
Evidence Of Y Chromosome Long Non-Coding Rnas Involved In The Radiation Response Of Male Non-Small Cell Lung Cancer Cells, Tayvia Brownmiller
Evidence Of Y Chromosome Long Non-Coding Rnas Involved In The Radiation Response Of Male Non-Small Cell Lung Cancer Cells, Tayvia Brownmiller
Graduate Theses, Dissertations, and Problem Reports
Non-small cell lung cancer (NSCLC) is the number one cause of cancer related mortality in the United States and worldwide. Advanced and therapeutically resistant lung tumors contribute to the high rate of mortality from NSCLC, therefore there is a need for new methods of diagnosing and treating this disease. Long non-coding RNAs (lncRNAs) have been shown to be a crucial component of human molecular biology, regulating nearly every cellular pathway from chromatin condensation to transcription and translation. Furthermore, many lncRNAs have been classified as oncogenes or tumor suppressors, highlighting the various molecular mechanisms they are involved in regarding the formation …
The Effects Of Internal Physiology On Polyphenic Horn Development In The Dung Beetle Onthophagus Taurus, Naomi Garrett Williamson
The Effects Of Internal Physiology On Polyphenic Horn Development In The Dung Beetle Onthophagus Taurus, Naomi Garrett Williamson
Graduate Theses, Dissertations, and Problem Reports
An organism’s phenotype can be affected in development by alterations to gene expression based on environmental inputs. Nutrition is one such environmental input and the central regulator of development of large horn or small horn phenotypes in the dung beetle species, Onthophagus taurus. However, little is known about the nature of chemical compounds that are critical to this plastic horn development. To better understand these compounds, we are utilizing an untargeted metabolomic approach as well as a targeted gene approach. Through the metabolomic approach, it was uncovered that environmental conditions tend to have a greater impact on metabolomic composition …