Elucidating The Roles Of Septin Proteins In Thermotolerance And Cell Wall Integrity In Cryptococcus Neoformans,
2024
Clemson University
Elucidating The Roles Of Septin Proteins In Thermotolerance And Cell Wall Integrity In Cryptococcus Neoformans, Stephani S. Martinez Barrera
All Dissertations
Cryptococcus neoformans is a globally distributed fungal pathogen responsible for causing cryptococcal meningitis in immunocompromised individuals. This pathogenic yeast must adapt to changes in temperature upon entering the human host. Septin proteins are conserved filament-forming GTPases that assemble as higher-order complexes at the cell cortex to support cytokinesis and morphogenesis in fungal and animal cells. In C. neoformans, four septin homologs (Cdc3, Cdc10, Cdc11, and Cdc12) assemble at the mother-bud neck, contributing to cytokinesis through poorly understood mechanisms. C. neoformans strains lacking the septins Cdc3 or Cdc12 are viable at 25°C, but fail to proliferate at 37°C, and are …
Investigation Of The Microbiome Of A Recirculating Aquaculture System (Ras) For Crassostrea Virginica Larvae,
2024
The University of Southern Mississippi
Investigation Of The Microbiome Of A Recirculating Aquaculture System (Ras) For Crassostrea Virginica Larvae, Isabelle Townsend
Master's Theses
Recirculating Aquaculture Systems (RAS) offer control over physicochemical and biological factors impacting aquaculture success. One understudied facet of RASs is the water microbiome. Oyster larval microbiomes are shaped by their aquatic microbiomes. Understanding the dynamics of and the factors shaping RAS microbiome may provide insights to how the microbiome can be a tool for optimizing larval production. This study’s goals were to investigate the microbiome stability of a RAS rearing oyster larvae across time and space, determine impacts of larval presence on the microbiome, and examine connections between larvae production outcomes and microbiome stability. Water samples were collected weekly from …
Performance And Enhanced Efficiency Induced By Cold Plasma On Sapo-34 Membranes For Co2 And Ch4 Mixtures,
2024
University of Arkansas, Fayetteville
Performance And Enhanced Efficiency Induced By Cold Plasma On Sapo-34 Membranes For Co2 And Ch4 Mixtures, Fnu Gorky, Vashanti Storr, Grace Jones, Apolo Nambo, Jacek B. Jasinski, Maria L. Carreon
Chemical Engineering Faculty Publications and Presentations
In this study, we investigate the influence of cold-plasma-induced enhanced performance and efficiency of SAPO-34 membranes in the separation of CO2 and CH4 mixtures. Placing the herein presented research in a broader context, we aim to address the question of whether cold plasma can significantly impact the membrane performance. We subjected SAPO-34 membranes to plasma mild disturbances and analyzed their performance in separating CO2 and CH4. Our findings reveal a notable enhancement in membrane efficiency and sustained performance when exposed to cold plasma. The pulsed plasma separation displayed improved structural integrity, and the experimental results …
Cigarette Smoke-Induced Epithelial-To-Mesenchymal Transition: Insights Into Cellular Mechanisms And Signaling Pathways,
2024
University of Kentucky
Cigarette Smoke-Induced Epithelial-To-Mesenchymal Transition: Insights Into Cellular Mechanisms And Signaling Pathways, Sarah Mohammed Alqithami, Amrita Machwe, David K. Orren
Markey Cancer Center Faculty Publications
This review delves into the molecular complexities underpinning the epithelial-to-mesenchymal transition (EMT) induced by cigarette smoke (CS) in human bronchial epithelial cells (HBECs). The complex interplay of pathways, including those related to WNT//β-catenin, TGF-β/SMAD, hypoxia, oxidative stress, PI3K/Akt, and NF-κB, plays a central role in mediating this transition. While these findings significantly broaden our understanding of CS-induced EMT, the research reviewed herein leans heavily on 2D cell cultures, highlighting a research gap. Furthermore, the review identifies a stark omission of genetic and epigenetic factors in recent studies. Despite these shortcomings, the findings furnish a consolidated foundation not only for the …
Nsd3::Nutm1 Fusion Sarcoma Mimicking Malignant Peripheral Nerve Sheath Tumor With Prolonged Survival,
2024
University of Kentucky
Nsd3::Nutm1 Fusion Sarcoma Mimicking Malignant Peripheral Nerve Sheath Tumor With Prolonged Survival, Jing Di, Ali M. Alhaidary, Chi Wang, Jinge Liu, Sainan Wei, Joseph Valentino, Therese J. Bocklage
Markey Cancer Center Faculty Publications
Nuclear Protein in Testis (NUT)-rearranged tumors comprise predominantly NUT car- cinoma but also include certain lymphomas, leukemias, skin appendage tumors, and sarcomas. Although histologically diverse, all are genetically identified by oncogenic rearrangement in the NUTM1 gene. Many fusion partners occur, and NSD3 is NUT carcinoma’s third most common partner. Herein, we present a case of a 26-year-old man with an NSD3::NUTM1 fusion sarcoma. The patient presented at the age of 13 months with a scalp nodule. Over the next 24 years, he experienced five local recurrences and ultimately expired of a rapidly progressive recurrence. His treatment included surgical resections, radiation, …
Unraveling The Complex Dynamics Of Cardiac Fibrosis: Ccn1 As A Novel Regulator Of Scar Collagen Architecture And Structural Integrity In Myocardial Infarction.,
2024
University of Louisville
Unraveling The Complex Dynamics Of Cardiac Fibrosis: Ccn1 As A Novel Regulator Of Scar Collagen Architecture And Structural Integrity In Myocardial Infarction., Annalara Garland Fischer
Electronic Theses and Dissertations
Expansion of the extracellular matrix (ECM), known as fibrosis, accompanies nearly all forms of cardiac disease; however, its most significant and complex manifestations arise following a myocardial infarction (MI). This process, principally led by fibroblasts, constitutes a necessary and adaptive response acutely to fill the void from cardiomyocyte necrosis following ischemic injury due to the heart’s lack of regenerative capacity. This acute response never fully resolves and contributes to ongoing collagen accumulation in non-infarcted regions, leading to diminished ventricular compliance, ongoing myocyte loss, and attrition in function—culminating in heart failure. Further, recent research demonstrates that concomitant with progressive increases in …
Diatom Abundance In The Polar Oceans Is Predicted By Genome Size,
2024
University of Arkansas, Fayetteville
Diatom Abundance In The Polar Oceans Is Predicted By Genome Size, Wade R. Roberts, Adam M. Siepielski, Andrew J. Alverson
Biological Sciences Faculty Publications and Presentations
A principal goal in ecology is to identify the determinants of species abundances in nature. Body size has emerged as a fundamental and repeatable predictor of abundance, with smaller organisms occurring in greater numbers than larger ones. A biogeographic component, known as Bergmann’s rule, describes the preponderance, across taxonomic groups, of larger-bodied organisms in colder areas. Although undeniably important, the extent to which body size is the key trait underlying these patterns is unclear. We explored these questions in diatoms, unicellular algae of global importance for their roles in carbon fixation and energy flow through marine food webs. Using a …
Placental Co-Transcriptional Activator Vestigial-Like 1 (Vgll1) Drives Tumorigenesis Via Increasing Transcription Of Proliferation And Invasion Genes,
2024
The Texas Medical Center Library
Placental Co-Transcriptional Activator Vestigial-Like 1 (Vgll1) Drives Tumorigenesis Via Increasing Transcription Of Proliferation And Invasion Genes, Heather Sonnemann
Dissertations and Theses (Open Access)
Vestigial-like 1 (VGLL1) is a co-transcriptional activator that binds to TEA domain containing transcription factors (TEADs). Its expression is upregulated in a variety of aggressive cancer types, including pancreatic and basal-like breast cancer, and increased transcription of VGLL1 is strongly correlated with poor prognosis and decreased overall patient survival. In normal tissues, VGLL1 is most highly expressed within placental trophoblast cells, which share the common attributes of rapid cellular proliferation and invasion with tumor cells. The impact of VGLL1 in cancer has not been fully elucidated and no VGLL1-targeted therapy currently exists. The aim of this study was to evaluate …
Exploring Acetate Metabolism: Genetically Characterizing Acetate Production And Acetate Utilization In The Fungal Pathogen Cryptococcus Neoformans,
2024
Clemson University
Exploring Acetate Metabolism: Genetically Characterizing Acetate Production And Acetate Utilization In The Fungal Pathogen Cryptococcus Neoformans, Rodrigo Catalan-Hurtado
All Dissertations
The basidiomycete Cryptococcus neoformans is an invasive opportunistic fungal pathogen and the most frequent cause of fungal meningitis resulting in approximately 112,000 deaths per year worldwide. Recently, the World Health Organization systematically prioritized fungal pathogens in which C. neoformans was among four fungal pathogens deemed critically important. Current methods of treatment are inadequate for most of the infected population; therefore, it is imperative to find novel therapeutic targets. Previous studies have shown that acetate is a major metabolite found in biopsies of C. neoformans infected mouse brain and lung tissues. Two potential pathways for acetate production have been identified. …
Assessment Of Tce And Chiral Pcb Dechlorination Rate, Congener Diversity, And Enantioselectivity In Town Creek, Sc, Usa Sediment Microcosms,
2024
Clemson University
Assessment Of Tce And Chiral Pcb Dechlorination Rate, Congener Diversity, And Enantioselectivity In Town Creek, Sc, Usa Sediment Microcosms, Catherine P. Sumner
All Dissertations
Polychlorinated biphenyls (PCBs) and trichloroethene (TCE) are ubiquitous contaminants and are recognized as persistent organic pollutants due to their extreme chemical stability. PCBs were manufactured by chlorinating biphenyls that created 209 congeners with various structures, of which 19 are chiral and can exist as a pair of stable atropisomers. PCBs have been known to cause developmental and neurological toxicity in humans and wildlife; they can act as endocrine disrupters, carcinogens, and teratogens. Sangamo Weston Inc. was an industrial plant located near Town Creek in Pickens Country, South Carolina, that manufactured capacitors and used Aroclors 1016 and 1254 as dialectic fluids …
Developing A Comprehensive Genome-Scale Metabolic Model For The Arabidopsis Thaliana Root System,
2024
University of Nebraska-Lincoln
Developing A Comprehensive Genome-Scale Metabolic Model For The Arabidopsis Thaliana Root System, Lohani Esterhuizen
Department of Chemical and Biomolecular Engineering: Dissertations, Theses, and Student Research
Arabidopsis thaliana (Arabidopsis) is the most well-established model plant to date. Being the first plant to have its genome mapped, studies on Arabidopsis have provided insurmountable insights into the physiological and biochemical nature of plants. Methods that allow us to computationally study the metabolism of organisms include the use of genome-scale metabolic models (GEMs). Despite its popularity, no GEM currently maps the metabolic activity in the root system of Arabidopsis, which is the first organ to face and respond to stress conditions in the soil. This work aims to develop and implement a comprehensive GEM of the Arabidopsis root system …
L-Arabinose Induced Overexpression For Crystallographic Analysis Of The Spoiie Protein From Clostridioides Difficile,
2024
University of Arkansas, Fayetteville
L-Arabinose Induced Overexpression For Crystallographic Analysis Of The Spoiie Protein From Clostridioides Difficile, Danielle M. Maynard
Graduate Theses and Dissertations
The SpoIIE protein plays a crucial role in the sporulation process of Clostridioides difficile, a pathogen responsible for severe gastrointestinal diseases. Understanding the structural and functional aspects of SpoIIE is pivotal for deciphering its role in sporulation and exploring its potential as a therapeutic target. This study investigates the impact of varying concentrations of L-arabinose on the overexpression of SpoIIE in C. difficile, aiming to optimize protein yield and purity for subsequent crystallization and structural determination via X-ray crystallography. Using a recombinant expression system in Escherichia coli, different concentrations of L-arabinose were employed to induce SpoIIE overexpression. Protein purification was …
Diapause Specific Proteins Of A Brine Shrimp Form Liquid Droplets Dependent On Salt And Ph Levels,
2024
University of Louisville
Diapause Specific Proteins Of A Brine Shrimp Form Liquid Droplets Dependent On Salt And Ph Levels, Kolby Sanders, Alex Haydon, Charles Elder, David Grimm, Michael Menze
Undergraduate Research Events
Liquid-Liquid Phase Separation (LLPS) is a process when a polypeptide condenses into a dense and dilute phase in aqueous solutions. Within cells, this process is believed to relate to stress regulation and various cellular processes. Several stress-related proteins found only during the embryonic developmental stage of diapause in the brine shrimp, A. franciscana, have been observed to undergo LLPS in vitro. Our results show that the small heat shock protein (sHSP) p26 has a greater propensity to LLPS under varying salt concentrations compared to LEA6, a late embryogenesis abundant protein (LEA). At a protein concentration of 1.31 mg/ml in …
Elevating Plk1 Overcomes Beti Resistance In Prostate Cancer Via Triggering Brd4 Phosphorylation-Dependent Degradation In Mitosis,
2024
University of Kentucky
Elevating Plk1 Overcomes Beti Resistance In Prostate Cancer Via Triggering Brd4 Phosphorylation-Dependent Degradation In Mitosis, Yanquan Zhang, Ka-Wing Fong, Fengyi Mao, Ruixin Wang, Derek B. Allison, Dana Napier, Daheng He, Jinpeng Liu, Yeqing Zhang, Jing Chen, Yifan Kong, Chaohao Li, Guangbing Li, Jinghui Liu, Zhiguo Li, Haining Zhu, Chi Wang, Xiaoqi Liu
Markey Cancer Center Faculty Publications
Bromodomain-containing protein 4 (BRD4) has emerged as a promising therapeutic target in prostate cancer (PCa). Understanding the mechanisms of BRD4 stability could enhance the clinical response to BRD4-tar- geted therapy. In this study, we report that BRD4 protein levels are significantly decreased during mitosis in a PLK1-dependent manner. Mechanistically, we show that BRD4 is primarily phosphorylated at T1186 by the CDK1/cyclin B complex, recruiting PLK1 to phosphorylate BRD4 at S24/S1100, which are recognized by the APC/CCdh1 complex for proteasome pathway degradation. We find that PLK1 overexpression lowers SPOP mutation-stabilized BRD4, consequently rendering PCa cells re-sensitized to BRD4 inhibitors. Intrigu-ingly, we …
Mutant Androgen Receptor Induces Neurite Loss And Senescence Independently Of Are Binding In A Neuronal Model Of Sbma,
2024
Thomas Jefferson University
Mutant Androgen Receptor Induces Neurite Loss And Senescence Independently Of Are Binding In A Neuronal Model Of Sbma, Jordyn Karliner, Y Liu, Diane Merry
Department of Biochemistry and Molecular Biology Faculty Papers
Spinal and bulbar muscular atrophy (SBMA) is a slowly progressing neuromuscular disease caused by a polyglutamine (polyQ)-encoding CAG trinucleotide repeat expansion in the androgen receptor (AR) gene, leading to AR aggregation, lower motor neuron death, and muscle atrophy. AR is a ligand-activated transcription factor that regulates neuronal architecture and promotes axon regeneration; however, whether AR transcriptional functions contribute to disease pathogenesis is not fully understood. Using a differentiated PC12 cell model of SBMA, we identified dysfunction of polyQ-expanded AR in its regulation of neurite growth and maintenance. Specifically, we found that in the presence of androgens, polyQ-expanded AR inhibited neurite …
Functional And Structural Analysis Of The Neimann-Pick Disease Type C Pathway To Include Caveolin-1,
2024
University of New Mexico
Functional And Structural Analysis Of The Neimann-Pick Disease Type C Pathway To Include Caveolin-1, Anthony Michael Seat
Chemistry and Chemical Biology ETDs
Human disease is often thought of as an all or nothing prospect, either one has the disease or one does not. This does not bear out in clinical or personal experiences, instead demonstrating that disease occurs within a spectrum ranging from presumed unaffected to demonstrably and detrimentally affected.Neimann-Pick disease is one example of this spectrum look into diseased states, with multiple named versions of a phenotypically similar disease. We focus on Neimann-Picktype C (NPC), which is the result of a disruption in the efflux of cholesterol and sphingolipids from the endocytic pathway. NPC demonstrates this concept of a spectrum of …
Conformational Alterations Of The Cell Surface Of Monomeric And Dimeric Β2m-Free Hla-I (Proto-Hla) May Enable Novel Immune Functions In Health And Disease,
2024
Thomas Jefferson University
Conformational Alterations Of The Cell Surface Of Monomeric And Dimeric Β2m-Free Hla-I (Proto-Hla) May Enable Novel Immune Functions In Health And Disease, Mepur Ravindranath, Narendranath Ravindranath, Carly Amato-Menker, Fatiha El Hilali, Edward Filippone
Division of Nephrology Faculty Papers
Human leukocyte antigens (HLAs) are polymorphic glycoproteins expressed on the cell surface of nucleated cells and consist of two classes, HLA class I and HLA class II. In contrast, in mice, these molecules, known as H-2, are expressed on both nucleated cells and erythrocytes. HLA-I molecules (Face-1) are heterodimers consisting of a polypeptide heavy chain (HC) and a light chain, B2-microglobulin (B2m). The heterodimers bind to antigenic peptides and present them to the T-cell receptors of CD8+ cytotoxic T lymphocytes. The HCs can also independently emerge on the cell surface as B2m-free HC monomers without peptides (Face-2). Early investigators suggested …
Exploring The Effects Of An Alfalfa Leaf-Derived Adsorbent On Microbial Community, Ileal Morphology, Barrier Function, And Immunity In Turkey Poults During Chronic Aflatoxin B1 Exposure,
2024
National Autonomous University of Mexico
Exploring The Effects Of An Alfalfa Leaf-Derived Adsorbent On Microbial Community, Ileal Morphology, Barrier Function, And Immunity In Turkey Poults During Chronic Aflatoxin B1 Exposure, Maria De Jesus Nava-Ramirez, Jing Liu, Juan Omar Hernandez-Ramirez, Xochitl Hernandez-Velasco, Juan D. Latorre, Alma Vazquez-Duran, Guolong Zhang, Roberto Señas-Cuesta, Sergio Gomez-Rosales, Andressa Stein, Billy M. Hargis, Guillermo Tellez-Isaias, Abraham Mendez-Albores, Jesus A. Maguey-Gonzalez
Poultry Science Faculty Publications and Presentations
This article follows-up on our recently published work, which evaluated the impact of the addition of an alfalfa leaf-derived adsorbent in the aflatoxin B1 (AFB1)-contaminated diet in regard to the production parameters, blood cell count, serum biochemistry, liver enzymes, and liver histology of turkey poults. This paper presents complementary results on microbial community, ileal morphology, barrier function, and immunity. For this purpose, 350 1-day-old female turkey poults were randomly distributed into five groups: (1) Control, AFB1-free diet; (2) AF, AFB1-contaminated diet at 250 ng/g; (3) alfalfa, AFB1-free diet + 0.5% ( …
Interleukin 24 Induces Apoptosis Through Glycogen Synthase Kinase-3 Beta Inactivation In Prostate Cancer Cells,
2024
CUNY Lehman College
Interleukin 24 Induces Apoptosis Through Glycogen Synthase Kinase-3 Beta Inactivation In Prostate Cancer Cells, Sual J. Lopez, Moira Sauane
Theses and Dissertations
Interleukin 24 (IL-24) is a tumor-suppressing protein currently in clinical trials. IL-24 induces cancer-specific apoptosis by activating endoplasmic reticulum (ER) stress and mitochondria dysfunction. We have previously demonstrated that IL-24 leads to apoptosis in cancer cells by protein kinase A (PKA) activation in human breast cancer cells. To further understand the mechanism by which IL-24 induces apoptosis, I analyzed the role of glycogen synthase kinase-3 (GSK3), a highly conserved and normally active serine/threonine kinase in cancer cells and downstream target of PKA. The work reported here provides direct evidence that GSK3 was inhibited following IL-24 treatment in human prostate cancer …
Soxb1 Transcription Factors Are Essential For Initiating And Maintaining Neural Plate Border Gene Expression,
2024
Northwestern University
Soxb1 Transcription Factors Are Essential For Initiating And Maintaining Neural Plate Border Gene Expression, Elizabeth Schock, Joshua R. York, Austin P. Li, Ashlyn Y. Tu, Carole Labonne
Markey Cancer Center Faculty Publications
SoxB1 transcription factors (Sox2/3) are well known for their role in early neural fate specification in the embryo, but little is known about functional roles for SoxB1 factors in non-neural ectodermal cell types, such as the neural plate border (NPB). Using Xenopus laevis, we set out to determine whether SoxB1 transcription factors have a regulatory function in NPB formation. Here, we show that SoxB1 factors are necessary for NPB formation, and that prolonged SoxB1 factor activity blocks the transition from a NPB to a neural crest state. Using ChIP-seq, we demonstrate that Sox3 is enriched upstream of NPB genes in …
