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Articles 961 - 990 of 9779

Full-Text Articles in Genetics and Genomics

Assessing Roman Catholics’ Modern Beliefs And Behaviors Surrounding Genetics Counseling Services, Mary S. Shinaberry Jun 2024

Assessing Roman Catholics’ Modern Beliefs And Behaviors Surrounding Genetics Counseling Services, Mary S. Shinaberry

USF Tampa Graduate Theses and Dissertations

Currently, there is limited knowledge about the contemporary beliefs of Roman Catholics regarding genetic healthcare, and concerns exist that they may be less comfortable accessing genetic counseling services. To better meet the needs of this population, we interviewed 18 adult Roman Catholics living in the United States. A novel method of thematic analysis was utilized, combining traditional qualitative techniques with the assistance of ChatGPT-4, following best practices proposed to improve the trustworthiness of AI-assisted qualitative analysis. The majority of participants were college-educated women aged 25-40, none of whom had seen a genetic counselor. Most participants associated the term “genetic counseling” …


Protocol For Optical, Aqueous-Based Clearing Of Murine Tissues Using Ez Clear, Taeyong Ahn, Gabrielle E Largoza, Julia Younis, Mary E Dickinson, Chih-Wei Hsu, Joshua D Wythe Jun 2024

Protocol For Optical, Aqueous-Based Clearing Of Murine Tissues Using Ez Clear, Taeyong Ahn, Gabrielle E Largoza, Julia Younis, Mary E Dickinson, Chih-Wei Hsu, Joshua D Wythe

Faculty, Staff and Students Publications

Tissue clearing is an essential prerequisite for 3D volumetric imaging of larger tissues or organs. Here, we present a detailed protocol for optical, aqueous-based clearing of adult murine tissues using EZ Clear. We describe steps to ensure successful perfusion and fixation of organs from the adult mouse and supply guidelines for optimal lipid removal, refractive index matching, and tissue clearing. Finally, we provide imaging parameters for visualizing both exogenous perfused fluorescent dyes and endogenous fluorescence reporters in the adult mouse. For complete details on the use and execution of this protocol, please refer to Hsu et al.


Esr1 And P53 Interactome Alteration Defines Mechanisms Of Tamoxifen Response In Luminal Breast Cancer, Chetan C Oturkar, Spencer R Rosario, Alan D Hutson, Adrianne Groman, Stephen B Edge, Carl D Morrison, Wendy M Swetzig, Jianmin Wang, Jun Hyoung Park, Benny Abraham Kaipparettu, Prashant K Singh, Shicha Kumar, Helen H Cappuccino, Manish Ranjan, Araba Adjei, Mohammad Ghasemi, Andrew K L Goey, Swati Kulkarni, Gokul M Das Jun 2024

Esr1 And P53 Interactome Alteration Defines Mechanisms Of Tamoxifen Response In Luminal Breast Cancer, Chetan C Oturkar, Spencer R Rosario, Alan D Hutson, Adrianne Groman, Stephen B Edge, Carl D Morrison, Wendy M Swetzig, Jianmin Wang, Jun Hyoung Park, Benny Abraham Kaipparettu, Prashant K Singh, Shicha Kumar, Helen H Cappuccino, Manish Ranjan, Araba Adjei, Mohammad Ghasemi, Andrew K L Goey, Swati Kulkarni, Gokul M Das

Faculty, Staff and Students Publications

The canonical mechanism behind tamoxifen's therapeutic effect on estrogen receptor α/ESR1+ breast cancers is inhibition of ESR1-dependent estrogen signaling. Although ESR1+ tumors expressing wild-type p53 were reported to be more responsive to tamoxifen (Tam) therapy, p53 has not been factored into choice of this therapy and the mechanism underlying the role of p53 in Tam response remains unclear. In a window-of-opportunity trial on patients with newly diagnosed stage I-III ESR1+/HER2/wild-type p53 breast cancer who were randomized to arms with or without Tam prior to surgery, we reveal that the ESR1-p53 interaction in tumors was inhibited by Tam. This resulted in …


Comprehensive Single-Cell Atlas Of The Mouse Retina, Jin Li, Jongsu Choi, Xuesen Cheng, Justin Ma, Shahil Pema, Joshua R Sanes, Graeme Mardon, Benjamin J Frankfort, Nicholas M Tran, Yumei Li, Rui Chen Jun 2024

Comprehensive Single-Cell Atlas Of The Mouse Retina, Jin Li, Jongsu Choi, Xuesen Cheng, Justin Ma, Shahil Pema, Joshua R Sanes, Graeme Mardon, Benjamin J Frankfort, Nicholas M Tran, Yumei Li, Rui Chen

Faculty, Staff and Students Publications

Single-cell RNA sequencing (scRNA-seq) has advanced our understanding of cellular heterogeneity by characterizing cell types across tissues and species. While several mouse retinal scRNA-seq datasets exist, each dataset is either limited in cell numbers or focused on specific cell classes, thereby hindering comprehensive gene expression analysis across all retina types. To fill the gap, we generated the largest retinal scRNA-seq dataset to date, comprising approximately 190,000 single cells from C57BL/6J mouse retinas, enriched for rare population cells via antibody-based magnetic cell sorting. Integrating this dataset with public datasets, we constructed the Mouse Retina Cell Atlas (MRCA) for wild-type mice, encompassing …


Advancing Clinical Microbiology: Applications And Future Of Next-Generation Sequencing, Rob E. Carpenter Jun 2024

Advancing Clinical Microbiology: Applications And Future Of Next-Generation Sequencing, Rob E. Carpenter

Human Resource Development Faculty Publications and Presentations

Next-generation sequencing (NGS) has reformed infectious disease management, including COVID-19. While real-time polymerase chain reaction (PCR) is widely used for rapid pathogen detection, it requires predefined targets. NGS offers an unbiased approach, detecting multiple pathogens simultaneously without prior knowledge. Despite its potential, NGS implementation in clinical settings faces challenges like high costs and technical complexity. NGS platforms like Illumina, Ion Torrent, and Nanopore provide high-throughput sequencing, identifying pathogens and resistance markers. Applications include whole genome sequencing (WGS), metagenomic NGS (mNGS), and targeted NGS (tNGS). Integrating NGS with conventional methods could improve diagnostics, but current evidence is mixed for supporting its …


A Single Cell Rna Sequence Atlas Of The Early Drosophila Larval Eye, Komal Kumar Bollepogu Raja, Kelvin Yeung, Yumei Li, Rui Chen, Graeme Mardon Jun 2024

A Single Cell Rna Sequence Atlas Of The Early Drosophila Larval Eye, Komal Kumar Bollepogu Raja, Kelvin Yeung, Yumei Li, Rui Chen, Graeme Mardon

Faculty, Staff and Students Publications

The Drosophila eye has been an important model to understand principles of differentiation, proliferation, apoptosis and tissue morphogenesis. However, a single cell RNA sequence resource that captures gene expression dynamics from the initiation of differentiation to the specification of different cell types in the larval eye disc is lacking. Here, we report transcriptomic data from 13,000 cells that cover six developmental stages of the larval eye. Our data show cell clusters that correspond to all major cell types present in the eye disc ranging from the initiation of the morphogenetic furrow to the differentiation of each photoreceptor cell type as …


Daily Eicosapentaenoic Acid Infusion In Iugr Fetal Lambs Reduced Systemic Inflammation, Increased Muscle Adrβ2 Content, And Improved Myoblast Function And Muscle Growth, Haley Beer, Taylor A. Lacey, Rachel L. Gibbs, Micah S. Most, Zena M. Hicks, Pablo C. Grijalva, Eileen S. Marks-Nelson, Ty B. Schmidt, Jessica Lynn Petersen, Dustin T. Yates Jun 2024

Daily Eicosapentaenoic Acid Infusion In Iugr Fetal Lambs Reduced Systemic Inflammation, Increased Muscle Adrβ2 Content, And Improved Myoblast Function And Muscle Growth, Haley Beer, Taylor A. Lacey, Rachel L. Gibbs, Micah S. Most, Zena M. Hicks, Pablo C. Grijalva, Eileen S. Marks-Nelson, Ty B. Schmidt, Jessica Lynn Petersen, Dustin T. Yates

Department of Animal Science: Faculty Publications

Intrauterine growth-restricted (IUGR) fetuses exhibit systemic inflammation that contributes to programmed deficits in myoblast function and muscle growth. Thus, we sought to determine if targeting fetal inflammation improves muscle growth outcomes. Heat stress-induced IUGR fetal lambs were infused with eicosapentaenoic acid (IUGR+EPA; n = 9) or saline (IUGR; n = 8) for 5 days during late gestation and compared to saline-infused controls (n = 11). Circulating eicosapentaenoic acid was 42% less (p < 0.05) for IUGR fetuses but was recovered in IUGR+EPA fetuses. The infusion did not improve placental function or fetal O2 but resolved the 67% greater (p < 0.05) circulating TNFα observed in IUGR fetuses. This improved myoblast function and muscle growth, as the 23% reduction (p < 0.05) in the ex vivo differentiation of IUGR myoblasts was resolved in IUGR+EPA myoblasts. Semitendinosus, longissimus dorsi, and flexor digitorum superficialis muscles were 24–39% lighter (p < 0.05) for IUGR but not for IUGR+EPA fetuses. Elevated (p < 0.05) IL6R and reduced (p < 0.05) β2 adrenoceptor content in IUGR muscle indicated enhanced inflammatory sensitivity and diminished β2 adrenergic sensitivity. Although IL6R remained elevated, β2 adrenoceptor deficits were resolved in IUGR+EPA muscle, demonstrating a unique underlying mechanism for muscle dysregulation. These findings show that fetal inflammation contributes to IUGR muscle growth deficits and thus may be an effective target for intervention.


Real World Predictors Of Response And 24-Month Survival In High-Grade Tp53-Mutated Myeloid Neoplasms, Amandeep Kaur, Alexandra E Rojek, Emily Symes, Mariam T Nawas, Anand A Patel, Jay L Patel, Payal Sojitra, Barina Aqil, Madina Sukhanova, Megan E Mcnerney, Leo P Wu, Aibek Akmatbekov, Jeremy Segal, Melissa Y Tjota, Sandeep Gurbuxani, Jason X Cheng, Su-Yeon Yeon, Harini V Ravisankar, Carrie Fitzpatrick, Angela Lager, Michael W Drazer, Caner Saygin, Pankhuri Wanjari, Panagiotis Katsonis, Olivier Lichtarge, Jane E Churpek, Sharmila B Ghosh, Ami B Patel, Madhu P Menon, Daniel A Arber, Peng Wang, Girish Venkataraman Jun 2024

Real World Predictors Of Response And 24-Month Survival In High-Grade Tp53-Mutated Myeloid Neoplasms, Amandeep Kaur, Alexandra E Rojek, Emily Symes, Mariam T Nawas, Anand A Patel, Jay L Patel, Payal Sojitra, Barina Aqil, Madina Sukhanova, Megan E Mcnerney, Leo P Wu, Aibek Akmatbekov, Jeremy Segal, Melissa Y Tjota, Sandeep Gurbuxani, Jason X Cheng, Su-Yeon Yeon, Harini V Ravisankar, Carrie Fitzpatrick, Angela Lager, Michael W Drazer, Caner Saygin, Pankhuri Wanjari, Panagiotis Katsonis, Olivier Lichtarge, Jane E Churpek, Sharmila B Ghosh, Ami B Patel, Madhu P Menon, Daniel A Arber, Peng Wang, Girish Venkataraman

Faculty, Staff and Students Publications

Current therapies for high-grade TP53-mutated myeloid neoplasms (≥10% blasts) do not offer a meaningful survival benefit except allogeneic stem cell transplantation in the minority who achieve a complete response to first line therapy (CR1). To identify reliable pre-therapy predictors of complete response to first-line therapy (CR1) and outcomes, we assembled a cohort of 242 individuals with TP53-mutated myeloid neoplasms and ≥10% blasts with well-annotated clinical, molecular and pathology data. Key outcomes examined were CR1 & 24-month survival (OS24). In this elderly cohort (median age 68.2 years) with 74.0% receiving frontline non-intensive regimens (hypomethylating agents +/- venetoclax), the overall cohort CR1 …


Evaluation Of Major Physical And Mechanical Properties Of Trembling Aspen Lumber, Dawei Wang, Mengyuan Zhang, Meng Gong, Ying-Hei Chui Jun 2024

Evaluation Of Major Physical And Mechanical Properties Of Trembling Aspen Lumber, Dawei Wang, Mengyuan Zhang, Meng Gong, Ying-Hei Chui

Aspen Bibliography

Trembling aspen (Populus tremuloides) is one of the major species within Populus, a predominant genus of hardwoods in North America. However, its utilization has been limited to pulp and paper or wood-based composite boards. This study aimed at evaluating the major physical and mechanical properties of trembling aspen lumber, with an ultimate objective of using this species to produce engineered wood products (EWPs). The testing materials consisted of 2 × 4 (38 mm × 89 mm) trembling aspen lumber pieces in lengths of 8, 10, and 12 feet (2.44, 3.05, and 3.66 m) with two visual grades, …


The Ifitm5 Mutation In Osteogenesis Imperfecta Type V Is Associated With An Erk/Sox9-Dependent Osteoprogenitor Differentiation Defect, Ronit Marom, I-Wen Song, Emily C Busse, Megan E Washington, Ava S Berrier, Vittoria C Rossi, Laura Ortinau, Youngjae Jeong, Ming-Ming Jiang, Brian C Dawson, Mary Adeyeye, Carolina Leynes, Caressa D Lietman, Bridget M Stroup, Dominyka Batkovskyte, Mahim Jain, Yuqing Chen, Racel Cela, Alexis Castellon, Alyssa A Tran, Isabel Lorenzo, D Nicole Meyers, Shixia Huang, Alicia Turner, Vinitha Shenava, Maegen Wallace, Eric Orwoll, Dongsu Park, Catherine G Ambrose, Sandesh Cs Nagamani, Jason D Heaney, Brendan H Lee Jun 2024

The Ifitm5 Mutation In Osteogenesis Imperfecta Type V Is Associated With An Erk/Sox9-Dependent Osteoprogenitor Differentiation Defect, Ronit Marom, I-Wen Song, Emily C Busse, Megan E Washington, Ava S Berrier, Vittoria C Rossi, Laura Ortinau, Youngjae Jeong, Ming-Ming Jiang, Brian C Dawson, Mary Adeyeye, Carolina Leynes, Caressa D Lietman, Bridget M Stroup, Dominyka Batkovskyte, Mahim Jain, Yuqing Chen, Racel Cela, Alexis Castellon, Alyssa A Tran, Isabel Lorenzo, D Nicole Meyers, Shixia Huang, Alicia Turner, Vinitha Shenava, Maegen Wallace, Eric Orwoll, Dongsu Park, Catherine G Ambrose, Sandesh Cs Nagamani, Jason D Heaney, Brendan H Lee

Faculty, Staff and Students Publications

Osteogenesis imperfecta (OI) type V is the second most common form of OI, distinguished by hyperplastic callus formation and calcification of the interosseous membranes, in addition to the bone fragility. It is caused by a recurrent, dominant pathogenic variant (c.-14C>T) in interferon-induced transmembrane protein 5 (IFITM5). Here, we generated a conditional Rosa26-knockin mouse model to study the mechanistic consequences of the recurrent mutation. Expression of the mutant Ifitm5 in osteo-chondroprogenitor or chondrogenic cells resulted in low bone mass and growth retardation. Mutant limbs showed impaired endochondral ossification, cartilage overgrowth, and abnormal growth plate architecture. The cartilage phenotype correlates with …


Maldi Imaging Mass Spectrometry Visualizes The Distribution Of Antidepressant Duloxetine And Its Major Metabolites In Mouse Brain, Liver, Kidney, And Spleen Tissues, Saleh M Khalil, Xuan Qin, John M Hakenjos, Jian Wang, Zhaoyong Hu, Xinli Liu, Jin Wang, Mirjana Maletic-Savatic, Kevin R Mackenzie, Martin M Matzuk, Feng Li Jun 2024

Maldi Imaging Mass Spectrometry Visualizes The Distribution Of Antidepressant Duloxetine And Its Major Metabolites In Mouse Brain, Liver, Kidney, And Spleen Tissues, Saleh M Khalil, Xuan Qin, John M Hakenjos, Jian Wang, Zhaoyong Hu, Xinli Liu, Jin Wang, Mirjana Maletic-Savatic, Kevin R Mackenzie, Martin M Matzuk, Feng Li

Faculty, Staff and Student Publications

Imaging mass spectrometry (IMS) is a powerful tool for mapping the spatial distribution of unlabeled drugs and metabolites that may find application in assessing drug delivery, explaining drug efficacy, and identifying potential toxicity. This study focuses on determining the spatial distribution of the antidepressant duloxetine, which is widely prescribed despite common adverse effects (liver injury, constant headaches) whose mechanisms are not fully understood. We used high-resolution IMS with matrix-assisted laser desorption/ionization to examine the distribution of duloxetine and its major metabolites in four mouse organs where it may contribute to efficacy or toxicity: brain, liver, kidney, and spleen. In none …


Isolation Of Gametophytic Selection And Selective Embryo Abortion In Mimulus Guttatus, Desmond C. Willson Jun 2024

Isolation Of Gametophytic Selection And Selective Embryo Abortion In Mimulus Guttatus, Desmond C. Willson

University Honors Theses

A lack of genomic studies examining gametophytic selection (GS) and selective embryo abortion (SEA)--which occur during the reproduction of angiosperms--leaves questions regarding the adaptive and evolutionary effects of these processes. Analyzing deviations from Mendelian segregation offers an avenue for identifying loci targeted by GS and SEA, and their contributions to purging of genetic load. However, other selective processes such as meiotic drive and cytonuclear interactions, as well as pollen and ovule abortion, can cause distortion. To distinguish the effects of GS and SEA from other causes of distortion, we will perform reciprocal crosses between highly homozygous and highly heterozygous individuals …


Investigating The Role Of Ebf3a In Craniofacial Development, Shujan A. Sharafeldeen Jun 2024

Investigating The Role Of Ebf3a In Craniofacial Development, Shujan A. Sharafeldeen

Undergraduate Theses, Capstones, and Recitals

Proper craniofacial development requires many genes. Single-cell RNA sequencing (scRNA-seq) allows us to identify genes expressed in precursor cells for craniofacial structures, but the function of many of these genes in craniofacial development has yet to be characterized. In our scRNA-seq of cranial neural crest cells (NCCs), which are precursor cells for the craniofacial skeleton, we found a gene called early B-cell factor 3 (ebf3a) that may be involved in craniofacial development. In our scRNA-seq data, ebf3a expression is restricted to cranial NCCs of the dorsal and ventral domains of pharyngeal arches 1 and 2. In humans, damaging variants in …


Mutating Lysine 336 In Msh6 Does Not Appear To Affect Dna Mismatch Repair In Saccharomyces Cerevisiae, Anthony Thompson, Daniel Reese, Noa Bennafield, Kalila Daveron, Christopher Bolden, Joanna E. Haye-Bertolozzi Jun 2024

Mutating Lysine 336 In Msh6 Does Not Appear To Affect Dna Mismatch Repair In Saccharomyces Cerevisiae, Anthony Thompson, Daniel Reese, Noa Bennafield, Kalila Daveron, Christopher Bolden, Joanna E. Haye-Bertolozzi

XULAneXUS

Defects in the DNA mismatch repair process results in the accumulation of mutations and disease. Mutations in MSH6 and MSH2, encoding for the subunits of the MutSα complex, are often responsible for Constitutional Mismatch Repair Deficiency (CMMRD) and Lynch Syndrome (LS), respectively. This work focused on DNA mismatch repair through analysis of the MSH6 missense variant msh6-K336T. The mutation examined in this study is msh6-K336T in Saccharomyces cerevisiae, which is equivalent to msh6-K431T in humans. The mutation results in the replacement of lysine with threonine, an amino acid with different properties. It was therefore hypothesized that the mutation …


Mixing Trembling Aspen And White Spruce Increases The Understory Vegetation Cover And Improves Soil Properties But Effects Vary With Broadleaf Density, Mostarin Ara, Bradley D. Pinno, Philip G. Comeau Jun 2024

Mixing Trembling Aspen And White Spruce Increases The Understory Vegetation Cover And Improves Soil Properties But Effects Vary With Broadleaf Density, Mostarin Ara, Bradley D. Pinno, Philip G. Comeau

Aspen Bibliography

Despite the importance of species mixtures to ecosystem-based forest management, density effect of broadleaf trees in the mixture on understory vegetation and soil properties are poorly understood. In this study, we examine the effects of trembling aspen [aspen] (Populus tremuloides Michx.) -white spruce [ spruce] (Picea glauca (Moench) Vos) mixtures that vary in the proportion of aspen on understory vegetation cover, soil nutrient supply rates, and soil properties. Data were collected from an established study located in Alberta, Canada at age 20 and included the following treatments: 1. Natural regeneration of pure aspen; 2. Retaining only …


Developmental Milestones And Daily Living Skills In Individuals With Angelman Syndrome, Anjali Sadhwani, Sonya Powers, Anne Wheeler, Hillary Miller, Sarah Nelson Potter, Sarika U Peters, Carlos A Bacino, Steven A Skinner, Logan K Wink, Craig A Erickson, Lynne M Bird, Wen-Hann Tan Jun 2024

Developmental Milestones And Daily Living Skills In Individuals With Angelman Syndrome, Anjali Sadhwani, Sonya Powers, Anne Wheeler, Hillary Miller, Sarah Nelson Potter, Sarika U Peters, Carlos A Bacino, Steven A Skinner, Logan K Wink, Craig A Erickson, Lynne M Bird, Wen-Hann Tan

Faculty, Staff and Students Publications

BACKGROUND: Angelman syndrome (AS) is a neurodevelopmental disorder associated with severe global developmental delay. However, the ages at which different developmental skills are achieved in these individuals remain unclear. We seek to determine the probability and the age of acquisition of specific developmental milestones and daily living skills in individuals with AS across the different molecular subtypes, viz. class I deletion, class II deletion, uniparental disomy, imprinting defect, and UBE3A variants.

METHODS: Caregivers participating in a longitudinal multicenter Angelman Syndrome Natural History Study completed a questionnaire regarding the age at which their children achieved specific developmental milestones and daily living …


Puberty Classifications In Beef Heifers Are Moderately To Highly Heritable And Associated With Candidate Genes Related To Cyclicity And Timing Of Puberty, Melanie K. Hess, Anteneh Mersha, Sadie S. Ference, Sarah R. Nafziger, Jessica A. Keane, Anna M. Fuller, Scott G. Kurz, Courtney M. Sutton, Matthew L. Spangler, Jessica Lynn Petersen, Andrea S. Cupp Jun 2024

Puberty Classifications In Beef Heifers Are Moderately To Highly Heritable And Associated With Candidate Genes Related To Cyclicity And Timing Of Puberty, Melanie K. Hess, Anteneh Mersha, Sadie S. Ference, Sarah R. Nafziger, Jessica A. Keane, Anna M. Fuller, Scott G. Kurz, Courtney M. Sutton, Matthew L. Spangler, Jessica Lynn Petersen, Andrea S. Cupp

Department of Animal Science: Faculty Publications

Introduction: Pubertal attainment is critical to reproductive longevity in heifers. Previously, four heifer pubertal classifications were identified according to attainment of blood plasma progesterone concentrations > 1 ng/ml: 1) Early; 2) Typical; 3) Start-Stop; and 4) Non-Cycling. Early and Typical heifers initiated and maintained cyclicity, Start-Stop started and then stopped cyclicity and Non- Cycling never initiated cyclicity. Start-Stop heifers segregated into Start-Stop- Discontinuous (SSD) or Start-Stop-Start (SSS), with SSD having similar phenotypes to Non-Cycling and SSS to Typical heifers. We hypothesized that these pubertal classifications are heritable, and loci associated with pubertal classifications could be identified by genome wide association …


Rest-Dependent Downregulation Of Von Hippel-Lindau Tumor Suppressor Promotes Autophagy In Shh-Medulloblastoma, Ashutosh Singh, Donghang Cheng, Jyothishmathi Swaminathan, Yanwen Yang, Yan Zheng, Nancy Gordon, Vidya Gopalakrishnan Jun 2024

Rest-Dependent Downregulation Of Von Hippel-Lindau Tumor Suppressor Promotes Autophagy In Shh-Medulloblastoma, Ashutosh Singh, Donghang Cheng, Jyothishmathi Swaminathan, Yanwen Yang, Yan Zheng, Nancy Gordon, Vidya Gopalakrishnan

Faculty, Staff and Student Publications

The RE1 silencing transcription factor (REST) is a driver of sonic hedgehog (SHH) medulloblastoma genesis. Our previous studies showed that REST enhances cell proliferation, metastasis and vascular growth and blocks neuronal differentiation to drive progression of SHH medulloblastoma tumors. Here, we demonstrate that REST promotes autophagy, a pathway that is found to be significantly enriched in human medulloblastoma tumors relative to normal cerebella. In SHH medulloblastoma tumor xenografts, REST elevation is strongly correlated with increased expression of the hypoxia-inducible factor 1-alpha (HIF1α)-a positive regulator of autophagy, and with reduced expression of the von Hippel-Lindau (VHL) tumor suppressor protein - a …


Machine Learning In Time-Lapse Imaging To Differentiate Embryos From Young Vs Old Mice†, Liubin Yang, Carolina Leynes, Ashley Pawelka, Isabel Lorenzo, Andrew Chou, Brendan Lee, Jason D Heaney Jun 2024

Machine Learning In Time-Lapse Imaging To Differentiate Embryos From Young Vs Old Mice†, Liubin Yang, Carolina Leynes, Ashley Pawelka, Isabel Lorenzo, Andrew Chou, Brendan Lee, Jason D Heaney

Faculty, Staff and Students Publications

Time-lapse microscopy for embryos is a non-invasive technology used to characterize early embryo development. This study employs time-lapse microscopy and machine learning to elucidate changes in embryonic growth kinetics with maternal aging. We analyzed morphokinetic parameters of embryos from young and aged C57BL6/NJ mice via continuous imaging. Our findings show that aged embryos accelerated through cleavage stages (from 5-cells) to morula compared to younger counterparts, with no significant differences observed in later stages of blastulation. Unsupervised machine learning identified two distinct clusters comprising of embryos from aged or young donors. Moreover, in supervised learning, the extreme gradient boosting algorithm successfully …


Protein Nanoparticles As Vaccine Platforms For Human And Zoonotic Viruses, Kush Kumar Pandey, Bikash R. Sahoo, Asit K. Pattnaik Jun 2024

Protein Nanoparticles As Vaccine Platforms For Human And Zoonotic Viruses, Kush Kumar Pandey, Bikash R. Sahoo, Asit K. Pattnaik

Nebraska Center for Virology: Faculty Publications

Vaccines are one of the most effective medical interventions, playing a pivotal role in treating infectious diseases. Although traditional vaccines comprise killed, inactivated, or liveattenuated pathogens that have resulted in protective immune responses, the negative consequences of their administration have been well appreciated. Modern vaccines have evolved to contain purified antigenic subunits, epitopes, or antigen-encoding mRNAs, rendering them relatively safe. However, reduced humoral and cellular responses pose major challenges to these subunit vaccines. Protein nanoparticle (PNP)-based vaccines have garnered substantial interest in recent years for their ability to present a repetitive array of antigens for improving immunogenicity and enhancing protective …


Quantifying Variation Across 16s Rrna Gene Sequencing Runs In Human Microbiome Studies, Andrew J. Hoisington, Christopher E. Stamper, Joseph C. Ellis, Christopher A. Lowry, Lisa A. Brenner Jun 2024

Quantifying Variation Across 16s Rrna Gene Sequencing Runs In Human Microbiome Studies, Andrew J. Hoisington, Christopher E. Stamper, Joseph C. Ellis, Christopher A. Lowry, Lisa A. Brenner

Faculty Publications

Recent microbiome research has incorporated a higher number of samples through more participants in a study, longitudinal studies, and metanalysis between studies. Physical limitations in a sequencing machine can result in samples spread across sequencing runs. Here we present the results of sequencing nearly 1000 16S rRNA gene sequences in fecal (stabilized and swab) and oral (swab) samples from multiple human microbiome studies and positive controls that were conducted with identical standard operating procedures. Sequencing was performed in the same center across 18 different runs. The simplified mock community showed limitations in accuracy, while precision (e.g., technical variation) was robust …


An Epigenetically Driven Relationship Between Parental Ptsd And Inflammatory Disease In Offspring: A Proposal, Emma Griffith, Kevin P. Kaut Jun 2024

An Epigenetically Driven Relationship Between Parental Ptsd And Inflammatory Disease In Offspring: A Proposal, Emma Griffith, Kevin P. Kaut

Journal of Neuropsychology and Behavioral Processes

Could a combat veteran's horrific experiences in early-2000s Afghanistan have a direct, biological impact on his or her now-adult daughter's risk of a heart attack later in her life? This concept would have been unapologetically mocked a mere twenty years ago, and it has only been in the past decade that the new field of epigenetics has revealed a distinct possibility for this event to actually take place—for parents' experiences to profoundly influence the biology of their children. The major objective of this research project is to argue for the legitimacy of this theoretical phenomenon by discussing the latest data …


Malnutrition Alters Protein Expression Of Kndy Neuropeptides In The Arcuate Nucleus Of Mature Ewes, Jennifer F. Thorson, Ligia D. Prezotto Jun 2024

Malnutrition Alters Protein Expression Of Kndy Neuropeptides In The Arcuate Nucleus Of Mature Ewes, Jennifer F. Thorson, Ligia D. Prezotto

Department of Animal Science: Faculty Publications

The neuropeptides kisspeptin, neurokinin B, and dynorphin A are imperative for the pulsatile secretion of gonadotropin-releasing hormone and luteinizing hormone to ultimately regulate reproductive cyclicity. A population of neurons co-expressing these neuropeptides, KNDy neurons, within the arcuate nucleus of the hypothalamus (ARC) are positioned to integrate energy status from afferent neuronal and glial cells. We hypothesized that KNDyexpressing neurons in the ARC of mature ewes are influenced by energy balance. To test this hypothesis, ovary-intact, mature ewes were fed to lose, maintain, or gain body weight and hypothalamic tissue harvested during the luteal phase of the estrous cycle. Fluorescent, multiplex …


Effects Of Protein-Enriched Nutritional Support On Skeletal Muscle Mass And Rehabilitative Outcomes In Brain Tumor Patients: A Randomized Controlled Trial, Kye Hee Cho, Eun Young Han, Min Kyu Jung, Chang Moo Kang, Ji Cheol Shin, Sang Hee Im Jun 2024

Effects Of Protein-Enriched Nutritional Support On Skeletal Muscle Mass And Rehabilitative Outcomes In Brain Tumor Patients: A Randomized Controlled Trial, Kye Hee Cho, Eun Young Han, Min Kyu Jung, Chang Moo Kang, Ji Cheol Shin, Sang Hee Im

Faculty, Staff and Student Publications

Patients with brain tumors require extensive and prolonged rehabilitation efforts as they suffer from lesion-induced motor weakness as well as treatment-related side effects, often leading to a significant decline in function. Protein supplements have shown positive effects on promoting muscle strength and physical performance in various tumor etiologies. However, reports on their effects specifically in brain tumor patients remain scarce. This study aims to investigate the feasibility and efficacy of protein supplements in enhancing rehabilitative outcomes via muscle strengthening and functional gain in brain tumor patients with neurological demise. Sixty brain tumor patients were randomly assigned to either a protein …


Computational Analysis Of O6-Methylated Guanine And Thioguanine Complexes, Kirsten Stinson, Michael Bowman Jun 2024

Computational Analysis Of O6-Methylated Guanine And Thioguanine Complexes, Kirsten Stinson, Michael Bowman

Lux et Fides: A Journal for Undergraduate Christian Scholars

DNA methylation occurring on the O6 position of guanine has been linked to the formation of cancer. DNA complexes with O6-methylated guanine have been studied experimentally, yet questions remain concerning the carcinogenic properties of O6-methylguanine. This present research explored the interaction between O6-methylguanine and its potential nucleobase pairs of cytosine and adenine in hopes of elucidating the mutagenic characteristics of O6-methylguanine. A variety of computational methods including Density Functional Theory (DFT), Symmetry Adapted Perturbation Theory (SAPT), Noncovalent Interaction (NCI) analysis, and Natural Bond Orbital (NBO) analysis were employed to comprehensively probe …


Individuals With Jak1 Variants Are Affected By Syndromic Features Encompassing Autoimmunity, Atopy, Colitis, And Dermatitis, Michael E Horesh, Marta Martin-Fernandez, Conor Gruber, Sofija Buta, Tom Le Voyer, Eve Puzenat, Harry Lesmana, Yiming Wu, Ashley Richardson, David Stein, Stephanie Hodeib, Mariam Youssef, Jacob A Kurowski, Elizabeth Feuille, Luis A Pedroza, Ramsay L Fuleihan, Alexandria Haseley, Alain Hovnanian, Pierre Quartier, Jérémie Rosain, Georgina Davis, Daniel Mullan, O'Jay Stewart, Roosheel Patel, Angelica E Lee, Rebecca Rubinstein, Leyla Ewald, Nikhil Maheshwari, Virginia Rahming, Ivan K Chinn, James R Lupski, Jordan S Orange, Vanessa Sancho-Shimizu, Jean-Laurent Casanova, Noura S Abul-Husn, Yuval Itan, Joshua D Milner, Jacinta Bustamante, Dusan Bogunovic Jun 2024

Individuals With Jak1 Variants Are Affected By Syndromic Features Encompassing Autoimmunity, Atopy, Colitis, And Dermatitis, Michael E Horesh, Marta Martin-Fernandez, Conor Gruber, Sofija Buta, Tom Le Voyer, Eve Puzenat, Harry Lesmana, Yiming Wu, Ashley Richardson, David Stein, Stephanie Hodeib, Mariam Youssef, Jacob A Kurowski, Elizabeth Feuille, Luis A Pedroza, Ramsay L Fuleihan, Alexandria Haseley, Alain Hovnanian, Pierre Quartier, Jérémie Rosain, Georgina Davis, Daniel Mullan, O'Jay Stewart, Roosheel Patel, Angelica E Lee, Rebecca Rubinstein, Leyla Ewald, Nikhil Maheshwari, Virginia Rahming, Ivan K Chinn, James R Lupski, Jordan S Orange, Vanessa Sancho-Shimizu, Jean-Laurent Casanova, Noura S Abul-Husn, Yuval Itan, Joshua D Milner, Jacinta Bustamante, Dusan Bogunovic

Faculty, Staff and Students Publications

Inborn errors of immunity lead to autoimmunity, inflammation, allergy, infection, and/or malignancy. Disease-causing JAK1 gain-of-function (GoF) mutations are considered exceedingly rare and have been identified in only four families. Here, we use forward and reverse genetics to identify 59 individuals harboring one of four heterozygous JAK1 variants. In vitro and ex vivo analysis of these variants revealed hyperactive baseline and cytokine-induced STAT phosphorylation and interferon-stimulated gene (ISG) levels compared with wild-type JAK1. A systematic review of electronic health records from the BioME Biobank revealed increased likelihood of clinical presentation with autoimmunity, atopy, colitis, and/or dermatitis in JAK1 variant-positive individuals. Finally, …


Rewiring The Sex-Determination Pathway During The Evolution Of Self-Fertility., Yongquan Shen, Shin-Yi Lin, Jonathan Harbin, Richa Amin, Allison Vassalotti, Joseph Romanowski, Emily Schmidt, Alexis Tierney, Ronald E Ellis Jun 2024

Rewiring The Sex-Determination Pathway During The Evolution Of Self-Fertility., Yongquan Shen, Shin-Yi Lin, Jonathan Harbin, Richa Amin, Allison Vassalotti, Joseph Romanowski, Emily Schmidt, Alexis Tierney, Ronald E Ellis

Rowan-Virtua School of Osteopathic Medicine Departmental Research

Although evolution is driven by changes in how regulatory pathways control development, we know little about the molecular details underlying these transitions. The TRA-2 domain that mediates contact with TRA-1 is conserved in Caenorhabditis. By comparing the interaction of these proteins in two species, we identified a striking change in how sexual development is controlled. Identical mutations in this domain promote oogenesis in Caenorhabditis elegans but promote spermatogenesis in Caenorhabditis briggsae. Furthermore, the effects of these mutations involve the male-promoting gene fem-3 in C. elegans but are independent of fem-3 in C. briggsae. Finally, reciprocal mutations in these genes show …


Aspen As Firebreaks At The Development Fringe, Kevin Krasnow, Paul C. Rogers Jun 2024

Aspen As Firebreaks At The Development Fringe, Kevin Krasnow, Paul C. Rogers

Aspen Bibliography

Quaking aspen (Populus tremuloides) forests are widely known and prized for their numerous values—biodiversity, habitat, forage, recreation, aesthetics, and others—including as a deterrent to wildfire. This reputation for stopping or slowing flames is explored here, alongside measures that may be taken to facilitate thriving aspen communities near human developments. It is clear that science supporting the premise of aspen as an effective firebreak is far from complete. Yet, how can we benefit from what we do know on this topic to increase the probability of preventing structural fire damage, while also encouraging the valued characteristics of aspen ecosystems?


Climate Considerations For Quaking Aspen Conservation, Douglas Shinneman, Susan Mcilroy, Paul C. Rogers Jun 2024

Climate Considerations For Quaking Aspen Conservation, Douglas Shinneman, Susan Mcilroy, Paul C. Rogers

Aspen Bibliography

Human-caused climate change alters ecosystem processes ranging from local to global scales. As a consequence of climate change we should expect increased rates and intensities of disturbance events. Though we are only beginning to understand what those impacts might be to aspen forests and their diverse plant and animal assemblages, recent science suggests there may be unavoidable effects. In the face of anticipated climate-ecosystem challenges, contemporary managers are searching for guidance on preserving aspen resilience. We suggest crafting strategic yet cautious approaches to minimize effects and facilitate broad resilience. For instance, monitoring conditions in and near aspen forests will help …


Genetic Diversity Analysis Of Greater Yam (Dioscorea Alata L.) Collections Using Tuber Morphology And Simple Sequence Repeats (Ssr) Markers, Junelyn Ravelo, Lara Jaaziel Batalon, Antonio Lalusin Jun 2024

Genetic Diversity Analysis Of Greater Yam (Dioscorea Alata L.) Collections Using Tuber Morphology And Simple Sequence Repeats (Ssr) Markers, Junelyn Ravelo, Lara Jaaziel Batalon, Antonio Lalusin

The Philippine Agricultural Scientist

The diversity of 148 greater yam (Dioscorea alata L.) accessions from the collections of the National Plant Genetics Resources Laboratory (NPGRL), Visayas State University (VSU), and the Institute of Crop Science - University of the Philippines Los Baños (ICROPS-UPLB) was evaluated using 54 Dioscorea-based SSR markers. Out of 54 SSR markers, polymorphic bands were amplified in 50 SSR markers with Polymorphic Information Content (PIC) values ranging from 0.65 to 0.89. Subsequent cluster analysis generated nine distinct clusters with a Jaccard’s distance index of 0.85, implying 85% dissimilarity among the greater yam accessions. Each formed cluster from the analysis comprised …