Digital Commons Network^™

A Novel Sialylation Pathway Mediated By Extracellular Vesicles In Aggressive Prostate Cancer, Camila A. Bach, Md Niamat Hossain, Ishan J. Chaudhari, Cecilia E. Verrillo, Nicole M. Naranjo, Isabella Amoroso, Anna Testa, Samuel Sey, W. Kevin Kelly, Susan L. Bellis, Aurelio Lorico, Ada G. Blidner, Gabriel A. Rabinovich, Lucia R. Languino

Department of Pharmacology, Physiology, and Cancer Biology Faculty Papers

Altered cell surface glycosylation is a hallmark of cancer; among aberrant glycan structures, hypersialylated proteins contribute to disease progression. The enzyme ST6 β-galactoside α2,6-sialyltransferase 1 (ST6GAL1) mediates α2,6-linked sialylation of N-glycosylated proteins and is upregulated in many cancers, including prostate cancer (PrCa). We propose that ST6GAL1 may be released by cancer cells in small extracellular vesicles (sEVs) in the PrCa tumor microenvironment to potentially modulate cell surface sialylation in recipient cells. We isolated sEVs from PrCa cells by density gradient separation and characterized them by nanoparticle tracking analysis using ZetaView and immunoblotting analysis. We identified ST6GAL1 in both its membrane-bound …

A Picture Paints A Thousand Words: Understanding How People Conceptualise Autism Through Images, Gray Atherton, Emily Dawson, Andrea Piovesan, Lauren Hawksworth-Quill, Liam Cross

School of Psychology

Conceptions of autism and neurodiversity vary widely, with differing views on how they are portrayed in contemporary culture. Although autism scholars have long advocated for greater involvement of autistic individuals in knowledge creation, meaningful co-production between autistic stakeholders, researchers, and the broader community remains limited. To explore differences in autism knowledge between autistic and non-autistic people, we used a qualitative method called visual elicitation. We invited the public to upload an image they felt represented autism and explain their choice. Through thematic analysis of these images and their accompanying descriptions, we identified three key themes highlighting how autism is currently …

Sga 57 Senate 2025-09-12 Minutes, Niu Student Government Association Senate

Student Government Association Archives

No abstract provided.

Structural Analysis Of Pseudomonas Phage Dev Virion-Associated Rna Polymerase (Gp71), James Scherer

All ETDs from UAB

DEV is a Pseudomonas aeruginosa bacteriophage part of a newly reclassified genus called Schitoviridae. This group of bacteriophages is also referred to as “N4-like” phages, after the prototypical Escherichia coli phage N4, originally isolated from sewage water in 19661. N4, and other phages in the group, contain a large, virion-associated RNA polymerase (vRNAP). This vRNAP is vital to the proliferation of the phage, as it performs the transcription of the early gene products and potentially acts as a motor that helps eject the viral genome into the host bacteria. In DEV, the vRNAP is also known as gene product 71 …

Draft Genome Sequence Of Staphylococcus Aureus N208 Isolated From A Nasal Swab Of A Healthy Female, Sandra Jablonska, Lila Nelson, Grace Finger, Alex Kula, Catherine Putonti

Biology: Faculty Publications and Other Works

Staphylococcus aureus, a common member of the healthy human microbiota, is an opportunistic pathogen. To investigate the genomic features of this species in healthy individuals, we present the draft genome sequence of S. aureus N208, isolated from a nasal swab collected from a healthy female participant.

Infusion Of Blood From Young And Old Mice Modulates Amyloid Pathology, Matias Pizarro, Ruben Gomez-Gutierrez, Ariel Caviedes, Catalina Valdes, Ute Woehlbier, Cristian Vargas, Mauricio Hernandez, Claudia Duran-Aniotz, Rodrigo Morales

Faculty, Staff and Student Publications

Alzheimer's disease (AD) is a neurodegenerative disease characterized by the accumulation of misfolded proteins in the brain. Recently, the impact of blood components in the progression of this disease has come to attention. This study investigates the effects of infusing blood from young and old wild-type mice into transgenic mice that model AD brain amyloidosis. Impaired memory and Aβ accumulation were observed in mice infused with blood from old donors. A proteomic analysis in the brain of these mice identified alterations in components related to synaptogenesis and the endocannabinoid system. The α2δ2 protein, associated with neuronal calcium regulation, was validated …

Loss Of Ptdss1 In Tumor Cells Improves Immunogenicity And Response To Anti-Pd-1 Therapy, Jielin Liu, Shelley Herbrich, Sreyashi Basu, Yulong Chen, Ashwat Nagarajan, Swetha Anandhan, Sangeeta Goswami, Liangwen Xiong, Baoxiang Guan, Padmanee Sharma

Faculty, Staff and Student Publications

PTDSS1 (phosphatidylserine synthase 1) encodes an enzyme that facilitates production of phosphatidylserine (PS), which mediates a global immunosuppressive signal. Here, based on in vivo CRISPR screen, we identified PTDSS1 as a target to improve anti-PD-1 therapy. Depletion of Ptdss1 in tumor cells increased expression of interferon-γ (IFN-γ)-regulated genes, including B2m, Cxcl9, Cxcl10, and Stat1, even in the absence of IFN-γ stimulation in vitro. Loss of Ptdss1 in tumor cells also led to increased expression of MHC-I, enhanced cytotoxicity of CD8+ T cells, and increased frequency of an iNOS+ myeloid subset. A gene signature derived from the …

The Diamond, September 12, 2025, Dordt University

Dordt Diamond

• Front Page: Staffing and Service Challenges in the New Atrium; Summer Storm Recap: Historic 'Derecho' Wind Hits Sioux Center; In God's Hands, On Our Helmets: Honoring Liam Sorensen's Life
• News: The Cottages: A Place to Call Home; Sioux Center Welcomes New Pickleball Courts
• Feature: Construction Updates and Ripples Seen on Campus; Dr. Justin Bailey and the 2025-2026 Chapel Vision; Dordt Welcomes Kristin Brouwer as New Director of Campus Ministries
• Politics: 'Pursuing Peace': Trump's Meeting with Putin; Funding Cuts Hinder the "Second Space Race"
• Opinion: Jersey on the Wall: Recent Reflection on Grief; Kraft Korner: …

Re: Butte Priority Soils Operable Unit (Bpsou) Final Insufficiently Reclaimed Sites Field Sampling Plan (Fsp): Bres No. 181 – Mountain Con-3 Dump., Mike Mcanulty

Silver Bow Creek/Butte Area Superfund Site

No abstract provided.

Hemispheric Asymmetry Of Phase Partition In Mixed-Phase Clouds Based On Near Global-Scale Airborne Observations, Ching An Yang, Minghui Diao, Yang Shi, Xiaohong Liu

Faculty Research, Scholarly, and Creative Activity

Mixed-phase clouds contribute to substantial uncertainties in global climate models due to their complex microphysical properties. Former model evaluations almost exclusively rely on satellite observations to assess cloud phase distributions globally. This study investigated mixed-phase cloud properties using near global-scale in situ observation data sets from 14 flight campaigns in combination with collocated output from a global climate model. The Southern Hemisphere (SH) shows significantly higher occurrence frequencies and higher mass fractions of supercooled liquid water than Northern Hemisphere (NH) based on observations at 0.2 and 100 km horizontal scales. Such hemispheric asymmetry is not captured by the model. The …

Observations On Predation Of The Flatback Turtle Natator Depressus By The Saltwater Crocodile Crocodylus Porosus At A Major Rookery In Northern Australia, Casper Avenant, James Gee

Research outputs 2022 to 2026

Context: We examined predation by the saltwater crocodile (Crocodylus porosus) on the flatback turtle (Natator depressus), an Australian endemic, at Cape Domett, a significant nesting site in Cambridge Gulf, northern Australia, where crocodile populations have recovered since legislative protection was implemented in the 1970s. Aims: The investigation aimed to document crocodile predation on flatback turtles across hatchling and adult life stages, assess predation strategies, and evaluate ecological impacts on this genetically distinct turtle stock. Methods: Conducted over three Austral winters (2021–2023), the study utilised infrared videography, unmanned aerial vehicles, and beach patrols to observe predation events in a population of …

Asthma Adherence And Self-Management In Pediatrics: A Quality Improvement Project, Harroop S. Kaur, Nancy S. Goldstein

International Nursing Research Congress (INRC)

The purpose of this pilot project was a quality improvement initiative aimed to assess various interventions designed to enhance treatment adherence amongst pediatric patients in an understaffed, underserved, rural area. It had three goals: boost interdisciplinary understanding of asthma, promote self-management amongst pediatric patients with asthma, and reduce additional clinic and emergency department visits, as well as hospitalizations.

Asthma, a chronic condition characterized by airway inflammation, affects over four million children in the US, impacting their quality of life. The condition manifests through a series of symptoms like wheezing. Without proper management, severe asthma can cause lifelong complications in pediatric …

Increasing Hpv Education And Vaccination Uptake In Women Aged 27-45: A Clinic Based Approach, Michelle Wakefield

International Nursing Research Congress (INRC)

BACKGROUND: Human Papillomavirus (HPV), the most common sexually transmitted infection, is linked to cervical, anal, vulvar, and oropharyngeal cancers. Despite its impact, only 16% of women aged 27-45 have received an HPV vaccine dose, partly due to recent vaccine recommendation changes. This project aimed to improve HPV knowledge and vaccination rates among women in this age group at a private obstetrics and gynecology practice in Southwestern Indiana.

METHODS: Targeting unvaccinated women aged 27-45, this quality improvement initiative (January–April 2024) provided verbal education on HPV and assessed patient knowledge via a Likert scale survey. Staff received training on vaccine …

“A Field Beaten Bare Of Grass”: Samuel Youd’S The Death Of Grass (1956) And The Scouring Of The Shire, Kristine Larsen

Journal of Tolkien Research

One of the novels Tolkien admits to liking (according to his published letters) was Samuel Youd’s thriller The Death of Grass (1956), published under the pen name John Christopher. Among the novel’s aspects that might have particularly resonated with Tolkien included environmental concerns, analogs with Tolkien’s World War II experience (especially rationing), and an emphasis on fairy-story Consolation and Recovery, among others. But in addition, parallels with “The Scouring of the Shire” and other late episodes in The Lord of the Rings clearly deserve further analysis. This paper therefore engages with Youd’s novel through that specific lens.

When Evidence Is Shocking: The Value Of Struggling With Uncomfortable Ideas, Cortney Evans-Stout, Christin L. Porter

Family Perspectives

No abstract provided.

Goal-Oriented Aesthetic Treatment (Goat): A Systematic Framework For Three-Dimensional Facial Aesthetic Assessment — Part 1: Vertical Dimension, Heng-Ming Chang, Yao Chen, Kwok-Hing Ho, Kai-Long Wang, Chih-Wei Wang

Taiwanese Journal of Orthodontics

Facial aesthetics is a multidimensional concept that requires an integrative assessment of the sagittal, vertical, and transverse planes to achieve balance and harmony. Among these, the vertical dimension plays a crucial role in determining facial proportions, occlusal function, and overall aesthetic perception. This review introduces the Goal-Oriented Aesthetic Treatment (GOAT) framework as a systematic approach to evaluating the vertical aspects of facial aesthetics, providing a structured methodology for clinical assessment and treatment planning. A comprehensive evaluation of the vertical dimension encompasses several key parameters, including facial pattern classification, vertical proportions, lip competency, and overbite analysis. Traditional cephalometric indices, such as …

Predicting Stability And Relapse In Class Iii Patients: The Role Of The Mandibular Plane Angle In Bimaxillary Surgery, Jason Jyun-Cheng Kuo, Min-Chi Chen, Yu-Chih Wang, Ellen Wen-Ching Ko

Taiwanese Journal of Orthodontics

Purpose: Skeletal stability after orthognathic surgery remains challenging in Class III malocclusion. This study examined how preoperative mandibular plane angle (FMA) and its surgical changes affect postoperative outcomes.

Patients and Methods: Sixty adult Taiwanese patients with skeletal Class III malocclusion treated by bimaxillary surgery without genioplasty were retrospectively analyzed. Cone-beam computed tomography (CBCT) at preoperative (T0), immediate postoperative (T1), and orthodontic debonding, ≥ 1-year postoperative (T2) stages was used to measure sagittal (Pog-CP), vertical (Me-FH), and transverse (Go–Go) changes. Pearson correlation and multiple regression analyses were performed.

Results: Smaller preoperative FMA and larger increased intraoperative FMA increases were significantly associated …

Structural Evolution Of Nitrogenase Over 3 Billion Years, Bruno Cuevas Zuviría, Franka Detemple, Kaustubh Amritkar, Amanda K. Garcia, Lance Seefeldt, Betül Kaçar

Chemistry and Biochemistry Faculty Publications

Previously, we identified the only dinitrogen reduction mechanism known to date as an ancient feature conserved from nitrogenase ancestors, which we directly tested by resurrecting and integrating synthetic ancestral nitrogenases into the genome of Azotobacter vinelandii (Garcia et al., 2023), a genetically tractable, nitrogen-fixing model bacterium. Here, we extend this paleomolecular approach to investigate the structural evolution of nitrogenase over billions of years of evolution by combining phylogenetics, ancestral sequence reconstruction, protein crystallography, and deep-learning based predictions. This study reveals that nitrogenase, while maintaining a conserved multimeric core, evolved novel modular features aligned with major environmental transitions, suggesting that subtle …

The Current - Volume 36 Issue 2, Nova Southeastern University

Student Newspapers

No abstract provided.

Binding Of A [2fe-2s] Cluster Drives Dimerization Of Ferric Uptake Regulator (Fur) In Escherichia Coli, Fatemeh Najafi, Aidan G. Purcell, Finbar H. Homes, Huangen Ding

Faculty Publications

The ferric uptake regulator (Fur) is a global transcription factor that reversibly binds an iron-sulfur [2Fe-2S] cluster via the cysteine residues (site 3) in response to elevation of intracellular free Fe content in Escherichia coli. Here, we report that when E. coli Fur is expressed in E. coli cells grown in M9 medium supplemented with Fe or zinc (Zn), purified Fur binds a [2Fe-2S] cluster or Zn(II), respectively. While apo-form Fur is a monomer and has no DNA-binding activity, both the [2Fe-2S] cluster-bound Fur and the Zn(II)-bound Fur are homodimers and have a similar binding activity for the DNA sequence …

A Square Peg In A Round Hole: The Isolated Chitrali Population Displays The Lowest Consanguinity Rate In Pakistan, Saif Ullah, Sader Uddin, Tatheer Zahra, Zaibun Nisa, Sajid Malik

Human Biology Open Access Pre-Prints

Background and Objectives: Pakistan is among the countries with the highest prevalence of consanguineous unions (CU), with reported rates ranging between 55% and 65%. This high level of consanguinity contributes significantly to the burden of recessive genetic disorders. The Chitrali population, an isolated community residing in the Hindu-Kush mountains of northwestern Pakistan, exhibits distinct genetic and cultural characteristics. This study aimed to assess the prevalence and patterns of CU within this population.

Method: A random sample of 993 individuals from Chitral was recruited between January 2023 and December 2024 through visits to public venues and household surveys. The consanguinity rate …

Roadkill Scavenging Behavior Of White-Throated Magpie-Jay (Cyanocorax Formosus) In Northwestern Costa Ricacomportamiento De Carroñeo En Carretera De La Urraca Copetona (Cyanocorax Formosus) En El Noroeste De Costa Rica, Juan De Dios Astorga-Acuña, José Manuel Mora

Biology Faculty Publications and Presentations

Corvids are opportunistic omnivores and facultative scavengers, but there are no direct records of Cyanocorax species scavenging on carrion. We documented opportunistic feeding behavior of the White-throated Magpie-Jay (Cyanocorax formosus) on a road-killed Common Pauraque (Nyctidromus albicollis) in northwestern Costa Rica. On 25 August 2023, we observed three White-throated Magpie-Jays feeding on the carcass of a Common Pauraque, likely killed by collision with a vehicle, along a gravel road near the Taboga Forestry Reserve. This provides de first documented evidence of the White-throated Magpie-Jay scavenging on roadkill, and of carrion consumption by a Central American corvid. Given the White-throated Magpie-Jay's …

Evaluating Gains In Student Self-Efficacy In Scientific Literacy Associated With A Brief Curricular Intervention, Radhika Reddy, Olivia M. Ainsworth, Mackenzie J. Gray, Andrea Hildebrand, Jazzmine Waugh, Jennifer Lindwall, Javier Huerta, Thomas E. Keller

Biology Faculty Publications and Presentations

Undergraduate research experiences (UREs) are high-impact practices that enhance retention, motivation, and self-efficacy in science, particularly for students with limited prior exposure to scientific environments. However, many students-especially those from underrepresented or marginalized backgrounds-enter these experiences with low research self-efficacy, stemming from limited familiarity with academic language, scientific literature, and research communication. The Research Induction Curriculum (RIC) was designed to address this challenge by providing early, structured training in scientific literacy through scaffolded journal club discussions. The RIC introduces students to progressively more complex scientific articles, supports peer discussion, and builds confidence in reading, interpreting, and presenting scientific information. This …

Mechanistic Rationale For Toxic Aerosol Formation From Vaping And Dabbing With A Focus On Ketene Formation From Semi-Synthetic Cannabinoids, Kaelas Ryan Munger

Dissertations and Theses

Cannabis vaping is a relatively new route of administration that is increasingly common among youth and young adults. Cannabis vaping has been associated with cases of acute lung injury, especially among youth, and most often involves the heating and aerosolization of high-potency products having cannabinoid concentrations of ~ 50 % - 98 % w/w. Proponents argue that vaping is safer than smoking due to the characteristically lower temperatures and fewer plant materials. However, the extreme cannabinoid concentrations, along with non-natural formulations having undisclosed additives, require studies of the health effects of these products. Despite the popularity of cannabis concentrate vaping, …

The Hepatic Glucagon Receptor As A Novel Regulator Of Lifespan, Alexander Tate Lasher

All ETDs from UAB

In developed nations the average lifespan has nearly doubled over the last 200 years, and the proportion of humans living into old age is ever increasing. While this is certainly a testament to the effectiveness of modern medicine and infrastructure, it presents a unique challenge to public health. Gains to health have not necessarily kept pace with the gains in lifespan, and the expanding aged population positions age-associated diseases to reach unprecedented prevalence. In light of this challenge, a mechanistic understanding of the aging process is necessary to identify factors that control longevity and to ultimately develop strategies for healthy …

Interactions Between Staphylococcus Aureus And Corynebacterium Species In The Context Of Chronic Rhinosinusitis, Joshua Tucker Huffines

All ETDs from UAB

Chronic rhinosinusitis (CRS) is a complex inflammatory disease affecting the upper respiratory tract (URT) for a large portion of the populace, leading to significant economic burdens. Staphylococcus aureus is considered as a significant contributor to CRS inflammation through the production of toxins regulated through quorum sensing (QS). Microbiome studies have characterized the microbial communities present in the healthy URT and in CRS. These studies show that the genus Corynebacterium is associated with the healthy URT, decreased in CRS, and has a negative correlation with S. aureus regardless of health status. A few studies have partially characterized a mechanism to explain …

Analysis Of Telomeric Conformational Dynamics At The Single Molecule Level, Arianna Lacen

All ETDs from UAB

In eukaryotes, the telomere serves as a safeguard against DNA damage and loss during replication and other events. To do so, telomeric DNA folds into a variety of protective secondary and tertiary structures whose formation and conformational dynamics have not been well characterized. We have identified a slow conformational rearrangement in telomeric single stranded DNA that results in a G-Quadruplex (G4) that cannot be unfolded by a complementary strand. We have also determined how the accessibility of G4 forming sequences changes in response to different high K+ environments, which may have implications on how the nascent telomeric overhang interacts with …

Leveraging Computational Modelling/Simulation, Machine Learning, And Additive Manufacturing For Customized Design Of Periodontal And Bone Tissue Scaffolds, Rakesh Pemmada

All ETDs from UAB

The current dissertation presents an overarching pipeline for the development and production of custom-made scaffolds for periodontal tissue regeneration using finite element analysis (FEA), machine learning (ML), and additive manufacturing (AM).CAD anatomically realistic scaffolds were generated from CT-based maxilla and mandible models. The FEA simulation results under masticatory (100 N), parafunctional (500–550 N), and traumatic (800–850 N) loads showed region-specific distribution of stresses and strains, which guided structural reinforcement strategies. Over 1000 3D-printed PCL scaffolds were printed using various pore diameters (200–300 µm) and filament diameters. Five ML models were constructed for predicting print quality based on process factors. Classification …

Mechanism Of Targeted Cancer Therapeutics-Induced Cardiotoxicity, Angelica Toro-Cora

All ETDs from UAB

Targeted cancer therapies are known to cause cardiovascular (CV) complications in human patients. Agents such as osimertinib, a tyrosine kinase inhibitor (TKI), as well as immune checkpoint inhibitors (ICIs) have been demonstrated to induce severe cardiotoxicities, including heart failure and myocarditis. Nevertheless, the mechanisms of TKIs and ICIs-induced cardiotoxicity remain poorly understood. Herein, we developed the first in vivo preclinical model of osimertinib-induced cardiotoxicity using a transverse aortic constriction (TAC) mouse model. Osimertinib-treated mice displayed severe cardiac dysfunction, elevated markers of heart failure and fibrosis, and failed to undergo compensatory hypertrophic remodeling, resulting in cardiomyocyte death. Mechanistically, we identified suppression …

Combined Crystallographic Study Of King Scallop (Pecten Maximus) Shells Using Sem, Ebsd And Raman Spectroscopy, Lise Guichaoua, Natalie Reznikov, Bryce D. Stewart, Roland Kröger, Raynald Gauvin

School of Biological and Marine Sciences

The shells of Pecten maximus (king scallop) are composed primarily of polycrystalline calcitic calcium carbonate, with a crucial aragonitic prismatic myostracum layer that facilitates soft tissue attachment and contributes to mechanical strength. Despite its importance, the impact of environmental stressors, such as metal contamination, on the myostracum remains underexplored. Hence, this study's main goal was to shed light on the microstructure and crystallography of king scallop shells, particularly the myostracum region, using a combination of scanning electron microscopy (SEM), electron backscatter diffraction (EBSD) analysis, and Raman spectroscopy. This approach was chosen to develop new protocols that integrate imaging techniques for …