Index Catalog // ScholarsArchive@OSU

Dietary organosulfur and organoselenium compounds as HDAC inhibitors

Creator:: Nian, Hui
Abstract:: Histone deacetylase (HDAC) inhibitors have the potential to de-repress epigenetically silenced genes in cancer cells, leading to cell cycle arrest and apoptosis. Dietary HDAC inhibitors derived from natural phytochemicals are promising anticancer agents. In this thesis, metabolites from natural organosulfur and organoselenium compounds, i.e. allyl mercaptan (AM), β-methylselenopyruvate (MSP) and...
Resource Type:: Dissertation

Crystal structures of DNA four-way junctions

Creator:: Eichman, Brandt F.
Abstract:: DNA four-way junctions (also known as Holliday junctions) are the primary structural intermediate during recombination, an important process responsible for biological evolution and maintenance of genomes. These junctions arise from the assembly of four nucleic acid strands to produce double-helical regions extending from a central point. Although much progress has...
Resource Type:: Dissertation
Full Text:: approved _____________ l Pui Shing Ho DNA four-way junctions (also known as Holliday junctions) are the

Underlying Mechanisms of the Anti-inflammatory and Antioxidant Effects of Quercetin in Human Aortic Endothelial Cells : Implications for Vascular Inflammation and Atherosclerosis

Creator:: Li, Chuan
Abstract:: Atherosclerosis is the underlying cause of ischemic heart disease and stroke and is the leading cause of death worldwide, especially in developed countries. As an inflammatory disease of arteries in a hyperlipidemic milieu, expression of adhesion molecules, such as endothelial-leukocyte adhesion molecule-1 (E-selectin) and intercellular adhesion molecule-1 (ICAM-1), on endothelial...
Resource Type:: Dissertation
Full Text:: 2 (Nrf2) activation, increased mRNA and protein levels of heme oxygenase 1 (HO-1), NAD(P)H

Towards a Better Understanding of How the Dietary Supplement Xanthohumol Can Improve Health

Creator:: Logan, Isabelle E.
Abstract:: Xanthohumol, a prenylated flavonoid found in hops and beer, possesses a long-standing reputation to improve health. Xanthohumol’s cytotoxicity to a wide variety of cancer cell lines is well-established. Herein we provide further insight into the cytotoxicity of not only xanthohumol, but also its non-estrogenic derivatives, to a number of colonic...
Resource Type:: Dissertation
Full Text:: Vasquez-Perez, Jaewoo Choi, and Malcolm Lowry contributed to experimental design and provided technical

Structural Insights into Novel Sugar Phosphate Cyclases and Flavoenzymes

Creator:: Kean, Kelsey M.
Abstract:: The function of a protein is defined by its three-dimensional structure, and in understanding the three-dimensional structure of a protein, we gain an understanding of its function and mechanism. Protein structures, especially at high resolution, can provide detailed insights into many elements of enzyme function and catalysis – identifying residues...
Resource Type:: Dissertation

Control of p53 tumor suppressor and peroxiredoxin activity through shifts incellular redox balance

Creator:: Stoner, Christopher S.
Abstract:: Aerobic organisms have evolved many sensory mechanisms that allow response to oxidants in the environment. One area of interest is the relationship between the activity of the tumor suppressor protein p53 and the redox state of thioredoxin. Human p53 activity is severely compromised in budding yeast lacking thioredoxin reductase. Evidence...
Resource Type:: Dissertation

Biophysical analyses of peroxiredoxins and a partner reductase

Creator:: Hall, Andrea Renée
Abstract:: Peroxiredoxins (Prxs) are dominant peroxide-reducing enzymes with two important roles: they protect all organisms from oxidative damage induced by peroxides, and in eukaryotes, they participate in hydrogen peroxide signaling pathways. This dissertation presents studies aimed at the biophysical characterization of select Prxs and a Prx reductase to elucidate their structure-function...
Resource Type:: Dissertation
Full Text:: linked with several different types of cancer (Yanagawa et al. 1999; Yanagawa et al. 2000; Chang et al

Transcriptional regulation of the human cathelicidin antimicrobial peptide gene

Creator:: Guo, Chunxiao
Abstract:: Human cathelicidin antimicrobial peptide (CAMP/LL-37) is a cationic antimicrobial peptide that is widely expressed by myeloid and epithelial cells at the human-environment interface. It possesses broad spectrum antimicrobial capacity against bacteria, fungi and viruses. In addition to its direct antimicrobial activity, CAMP/LL-37 also attracts and recruits monocytes, neutrophils and other...
Resource Type:: Dissertation
Full Text:: (Arnedo-Pena et al., 2011; Arya and Agarwal, 2011; Friis et al., 2008; Gibney et al., 2008; Ho-Pham et

Towards Resolving Functional and Evolutionary Mysteries of the Large and Heterozygous Genome of Hop (Humulus lupulus) and the Cannabaceae Family Using Genomic Data Science

Creator:: Padgitt-Cobb, Lillian K.
Abstract:: Hop (Humulus lupulus L. var. lupulus) is a diploid, dioecious plant with an extensive history of cultivation and use in brewing, as a textile, and for its therapeutic properties. Hop is prized for its ability to produce a variety of aromatic and flavor compounds, as well as compounds with anti-microbial...
Resource Type:: Dissertation

Model systems for structural investigations into peroxiredoxin catalysis, conformation change, and inactivation

Creator:: Perkins, Arden
Abstract:: Peroxiredoxin (Prx) enzymes catalyze the reduction of hydrogen peroxide, peroxynitrous acid, and organic peroxides, and are extremely efficient peroxidases, with k[subscript cat]/K[subscript M] on the order of 10⁷ - 10⁸ M⁻¹ s⁻¹. Besides their role in oxidative stress defense, evidence has accumulated that some eukaryotes, including humans, use Prxs as...
Resource Type:: Dissertation

ScholarsArchive@OSU

Dietary organosulfur and organoselenium compounds as HDAC inhibitors

Crystal structures of DNA four-way junctions

Underlying Mechanisms of the Anti-inflammatory and Antioxidant Effects of Quercetin in Human Aortic Endothelial Cells : Implications for Vascular Inflammation and Atherosclerosis

Towards a Better Understanding of How the Dietary Supplement Xanthohumol Can Improve Health

Structural Insights into Novel Sugar Phosphate Cyclases and Flavoenzymes

Control of p53 tumor suppressor and peroxiredoxin activity through shifts incellular redox balance

Biophysical analyses of peroxiredoxins and a partner reductase

Transcriptional regulation of the human cathelicidin antimicrobial peptide gene

Towards Resolving Functional and Evolutionary Mysteries of the Large and Heterozygous Genome of Hop (Humulus lupulus) and the Cannabaceae Family Using Genomic Data Science

Model systems for structural investigations into peroxiredoxin catalysis, conformation change, and inactivation

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