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Articles 1 - 30 of 68
Full-Text Articles in Genetics and Genomics
Computational Analysis Of O6-Methylated Guanine And Thioguanine Complexes, Kirsten Stinson, Michael Bowman
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 …
A Comparison Of Three Dna Extraction Methods On 45-Year-Old Pupae Cases, Ananya Udyaver, Casey Flint, Jeffery Tomberlin, Baneshwar Singh
A Comparison Of Three Dna Extraction Methods On 45-Year-Old Pupae Cases, Ananya Udyaver, Casey Flint, Jeffery Tomberlin, Baneshwar Singh
Undergraduate Research Posters
Blow flies are the primary colonizers of human cadavers. In many death investigations, insect evidence can help in prediction of minimum post-mortem interval (PMImin) but to do that, the first step is to identify collected insect evidence. For immature stages, morphological keys are either limited or incomplete and hence DNA based identification is used. For DNA based ID, DNA extraction is the first and the most important step, especially when collected evidence is highly degraded. The main aim of this study was to compare three DNA extraction methods (QIAgen Blood and Tissue Kit, organic, and QIAgen DNA Investigator Kit) to …
Creation Of A Digital Storage System For Genome Sequencing Metadata, Jacquelin W. Olexa
Creation Of A Digital Storage System For Genome Sequencing Metadata, Jacquelin W. Olexa
Undergraduate Theses, Professional Papers, and Capstone Artifacts
As the field of computational genomics continues to expand in both potential and application, it is now more imperative than ever to ensure that massive genetic sequencing datasets are properly stored in an accessible manner. This project sought to establish a practical, user-friendly, secure system for a genomics research lab (the Good Lab; thegoodlab.org) at the University of Montana. A MySQL database and connected web application was ruled the best configuration to maximize utility and accessibility for the lab’s researchers. Building the logical framework for the database, creating the server, and sourcing data occurred over several months. The dataset ranged …
Understanding The Expression And Role Of Pros-1 In The Male Gonad Of C. Elegans, Jack Bozik
Understanding The Expression And Role Of Pros-1 In The Male Gonad Of C. Elegans, Jack Bozik
Undergraduate Theses
The gene pros-1 is a transcription factor that is highly expressed within neuronal sheath cells, glial cells, and excretory canal cells. pros-1 plays a role in cell determination of those cell types in the nematode C. elegans, which promotes organismal development. But the degree to which pros-1 presence is important is still not fully understood, because there are many genes involved in development that when mutated or damaged can result in unexpected phenotypes or even total loss of function to a certain developmental mechanism. What makes pros-1 valuable to research is that it is a functional homologue to a …
My Summer Working With Two-Spotted Spider Mites, Renée A. Smith
My Summer Working With Two-Spotted Spider Mites, Renée A. Smith
Undergraduate Student Research Internships Conference
Two-spotted spider mites are a polyphagous pest, capable of eating a magnitude of food crops which causes a large problem for Canadian agriculture. Their ability to consume various crops stems from their ability to adapt to various chemical defence mechanisms. This ability allows them to acquire resistance to many commonly used pesticides. This has resulted in large infections in Canadian farms with few options to prevent the pests from affecting crop yields. Take a look at my project if you'd like to see how the Grbic lab is working to combat this issue using genetic engineering techniques!
A Patient-Derived Ipsc Model To Study Glutamate Deficiency By Shank-3 Mutation In Autism Spectrum Disorder, Tiffany Berry, Courtney Caccia
A Patient-Derived Ipsc Model To Study Glutamate Deficiency By Shank-3 Mutation In Autism Spectrum Disorder, Tiffany Berry, Courtney Caccia
Biology Student Scholarship
Tiffany Berry ’22, Majors: Biology and Psychology
Courtney Caccia ’22, Majors: Biology and Psychology
Faculty Mentor: Dr. Charles Toth, Biology
The use of human stem cell lines derived from persons with Autism Spectrum Disorder (ASD) provides a unique opportunity to model brain growth and potential to regain brain activity for treatment. Our lab has previously used stem cells to derive 3D cardiomyocytes to examine cardiovascular disease as well as kidney organoids and macrophages to study kidney disease. Using techniques our lab has learned using these stem cell models have prepared us to examine cell communication in mutated neurons. We will …
Cpf1-Based Crispr Genome Editing In The Cyanobacterium N. Punctiforme, Soohan Woo
Cpf1-Based Crispr Genome Editing In The Cyanobacterium N. Punctiforme, Soohan Woo
University of the Pacific Theses and Dissertations
CRISPR systems have been growing in their utility and their application throughout the biological field as researchers continue to grow in their understanding of the relatively novel genome editing technology. However, despite the potential of CRISPR as a genome editing tool, the complexity of applying this technology to a specific organism calls for custom modifications to the system to improve its success rate. In this project, a CRISPR-Cpf1 system that can be effectively employed in the cyanobacterium Nostoc punctiforme was designed, with a focus on the hormogonium development of this species. Multiple plasmids containing the CRISPR system and targeting different …
Anatomy And Physiology Preparatory Course Textbook (2nd Edition), Carlos Liachovitzky
Anatomy And Physiology Preparatory Course Textbook (2nd Edition), Carlos Liachovitzky
Open Educational Resources
The goal of this preparatory textbook is to give students a chance to become familiar with some terms and some basic concepts they will find later on in the Anatomy and Physiology course, especially during the first few weeks of the course.
Organization and functioning of the human organism are generally presented starting from the simplest building blocks, and then moving into levels of increasing complexity. This textbook follows the same presentation. It begins introducing the concept of homeostasis, then covers the chemical level, and later on a basic introduction to cellular level, organ level, and organ system level. This …
Will There Be Changes In Sexually Differentiated Behaviors In Mice Manipulated For The Sry Gene As They Mature Into Adultood?, Subin Joo
CMC Senior Theses
Sexually differentiated behavior has been shown to be affected by both genes and hormones. The discovery of the SRY gene, which codes for the development of testes, lead to the development of the Four Core Genotypes model of mice, and the separation of sex chromosomes and its resulting gonadal hormones. Using the FCG model, this study aims to look at the development of sexually differentiated behavior in mice, and track how it changes throughout their life. FCG mice will be divided into individual and social housing, and repeated experiments carried out to test their reaction to both intact female and …
Examining A Functional Interaction Between Chromatin Remodeler Chd1 And Histone H1 In D. Melanogaster, Breanna Kim
Examining A Functional Interaction Between Chromatin Remodeler Chd1 And Histone H1 In D. Melanogaster, Breanna Kim
Scripps Senior Theses
Chromodomain-helicase-DNA-binding-protein-1 (CHD1) is a highly conserved ATP- dependent remodeling protein. It is localized to active genes and directs nucleosome spacing, while its loss has been linked to various human diseases, such as human prostate cancer. In Drosophila, CHD1 is important for fertility and wing development, and overexpression of CHD1 leads to severe wing vein defect phenotypes. The Linker Histone H1, which is known for maintaining heterochromatin and is associated with inactive genes, had been previously identified as a possible functional partner of CHD1, though the exact nature of their interaction is unclear. I undertook a genetic approach to examining the …
Composition And Homology In The Taxonomic Classification Of Escherichia Coli, Tanya Irani
Composition And Homology In The Taxonomic Classification Of Escherichia Coli, Tanya Irani
Theses and Dissertations (Comprehensive)
As new techniques have been introduced, specifically the possibility of complete genome sequencing, better methods of defining bacterial species have also been proposed. One of the most recently proposed methods, using bioinformatic techniques, is to calculate the average nucleotide identity (ANI) between the homologous genome segments of different isolates. Another method for species discrimination that has been tested successfully is the similarity of DNA compositional signatures. However, in a recent update, DNA signatures split the available Escherichia coli complete genomes into three groups. To check if this result was consistent with such genomes belonging to different species, we tested methods …
Inheritability Of Ciprofloxacin-Induced Mitochondrial Mutations From Parental To Offspring Generation Using Quantitative Polymerase Chain Reaction, Rose Mccoy
Honors Theses
In all eukaryotes, mitochondria are known as the powerhouse of the cell (Siekevitz, 1957). In plants, however, their mitochondrial genome is especially strange. Plant mitochondrial genomes are extremely large and contain both linear and circular subgenomic DNA fragments. Plant mitochondrial genomes undergo a significant amount of mutations in the form of rearrangements. However, it is not known how often these rearrangements are inherited by the next generation. It is thought that plant cells that are still dividing have higher rates of DNA repair, such as double-strand break repair, to ensure the quality of that plant lineage. As follows, it is …
Population Genetics Of A Recent Range Expansion By The Southern Pine Beetle, Dendroctonus Frontalis, Into The Northeastern United States, Megan Stubbs
Honors Theses
Population genetics as a field of study aims to determine the genetic variation among individuals in a population, and differences among populations. Certain population genetic analyses can provide such information and be used to better understand the biological aspects to a species’ expansion beyond its native range. The southern pine beetle (SPB), Dendroctonus frontalis, has become an invasive pest to pine forests in northeastern United States with its recent range expansion. Nine microsatellite loci were first developed and then used in analyses. To determine what the genetic variation is among individuals in SPB populations across its entire range, including …
A Genomic Analysis Of Bobcat Populations In North America With A Comparison To The Canada Lynx: An Assessment Of Local Adaptation To Unique Ecoregions And Phylogeography, Jennifer C. Broderick
A Genomic Analysis Of Bobcat Populations In North America With A Comparison To The Canada Lynx: An Assessment Of Local Adaptation To Unique Ecoregions And Phylogeography, Jennifer C. Broderick
Electronic Theses and Dissertations
Bobcats (Lynx rufus) are an ecologically and genetically diverse species with a large contiguous range throughout North America. The species not only has a wide array of phenotypic variation compared to other mammals, but shows marked adaptability across ecozones with differing ecological influences. It is these various selective pressures in distinctive parts of the continent that have likely led to localized adaptations within the bobcat metapopulations. The species is also marked by its ability to maintain connectivity and populations in anthropogenically developed areas, an advantage it has over other felids, including its close relative the Canada lynx ( …
10th Annual Postdoctoral Science Symposium, University Of Texas Md Anderson Cancer Center Postdoctoral Association
10th Annual Postdoctoral Science Symposium, University Of Texas Md Anderson Cancer Center Postdoctoral Association
Annual Postdoctoral Science Symposium Abstracts
The Annual Postdoctoral Science Symposium (APSS) was initiated on August 4, 2011, by the MD Anderson Postdoctoral Association to provide a platform for talented postdoctoral fellows throughout the Texas Medical Center to present their work to a wider audience.
APSS is a scientific symposium organized by postdoctoral fellows from The University of Texas MD Anderson Cancer Center that welcomes submissions and presentations from postdoctoral fellows from all Texas Medical Center affiliated institutions and other Houston area institutions. The APSS provides a professional venue for postdoctoral scientists to develop, clarify and refine their research as result of formal reviews and critiques …
Using Crispr-Cas9 As A Restriction Enzyme, Zack Crawley
Using Crispr-Cas9 As A Restriction Enzyme, Zack Crawley
Master's Theses
Restriction digests are a commonly utilized process for cleaving DNA at specific, but relatively common sites. Restriction enzymes have widespread use in DNA manipulation. CRISPR/Cas9 is a recently identified endonuclease which utilizes a customizable guide sequence to recognize and cut specific ~20 bp sites located in a DNA sequence. This preliminary research aimed to exploit the potential benefit of DNA restriction using the CRISPR/Cas9 procedure through alterations of different components involved in that system. We sought to refine existing CRISPR/Cas9 protocols and make a budget friendly, user-selectable CRISPR/Cas9 restriction digest protocol. The motivation for this research was to simplify and …
A Look At Gene Control: Tracking The Ccnd1 Gene, Bryan Anders
A Look At Gene Control: Tracking The Ccnd1 Gene, Bryan Anders
Mahurin Honors College Capstone Experience/Thesis Projects
Cancer occurs when the cell does not properly control its own cell cycle. It then replicates in an out of control fashion leading to the death of various organs and then the demise of the organism as a whole. As it seems to have always been a problem for cell-based life, certain safeguards against cancer have been evolved over time. One such method comes in the form of prevention via cyclin proteins, which are encoded from cyclin genes. The gene that is the focus of this research is the CCND1, or cyclin D1, gene that controls the progression through various …
Floral Trait Architecture In Crop Sunflower (Helianthus Annuus) Under Drought Conditions, Lauren Segarra
Floral Trait Architecture In Crop Sunflower (Helianthus Annuus) Under Drought Conditions, Lauren Segarra
All Master's Theses
Longer and more intense droughts are predicted to become more common in the coming century due to anthropogenic climate change. Drought can reduce crop yield and decrease food security. In order to mitigate the negative effects of drought on crop production, it is important to elucidate the underlying mechanisms that promote drought stress resistance in crop plants. Floral traits impact yield, especially in oilseed crops such as sunflower (Helianthus annuus), but their susceptibility to drought stress is understudied. The goal of this study was to describe the floral trait architecture of H. annuus crop lines under drought versus …
9th Annual Postdoctoral Science Symposium, University Of Texas Md Anderson Cancer Center Postdoctoral Association
9th Annual Postdoctoral Science Symposium, University Of Texas Md Anderson Cancer Center Postdoctoral Association
Annual Postdoctoral Science Symposium Abstracts
The mission of the Annual Postdoctoral Science Symposium (APSS) is to provide a platform for talented postdoctoral fellows throughout the Texas Medical Center to present their work to a wider audience. The MD Anderson Postdoctoral Association convened its inaugural Annual Postdoctoral Science Symposium (APSS) on August 4, 2011.
The APSS provides a professional venue for postdoctoral scientists to develop, clarify, and refine their research as a result of formal reviews and critiques of faculty and other postdoctoral scientists. Additionally, attendees discuss current research on a broad range of subjects while promoting academic interactions and enrichment and developing new collaborations.
Investigating The Role Of Free Radicals In Huntington's Disease Using Drosophila Melanogaster, Jennifer Libov
Investigating The Role Of Free Radicals In Huntington's Disease Using Drosophila Melanogaster, Jennifer Libov
Honors Theses
During normal cell metabolism, reactive oxygen species (ROS) are produced as a byproduct of oxidative phosphorylation. ROS are utilized in the cell as a signaling molecule and can be maintained at healthy levels by cellular antioxidants. However, when the cell experiences oxidative stress due to environmental or genetic conditions, levels of ROS can exceed healthy levels and inhibit necessary life functions by damaging biomolecules and cellular structures. This loss of function can lead to physiological decline and neurodegeneration, such as in diseases like Alzheimer’s, amyotrophic lateral sclerosis (ALS), and, potentially, Huntington’s disease. The following experiments use the model genetic organism …
Application And Refinement Of Molecular Ecology Techniques For Amphibian Conservation, Stephanie Marie Burgess
Application And Refinement Of Molecular Ecology Techniques For Amphibian Conservation, Stephanie Marie Burgess
Electronic Theses and Dissertations
Wildlife conservation has become increasingly difficult due to habitat loss habitat fragmentation and land use change. Thus conservationists have embraced advances in molecular ecology such as landscape genetics and microbial bioinformatics that employ genetic techniques to further understand the relationship between individuals and their environment. In landscape genetics model inferences can be used to identify features that facilitate or resist gene flow providing a framework for anticipating the impacts of land use changes on a species’ ability to disperse. However the factors that affect the transferability of landscape genetics inferences are poorly understood and little is known about the effect …
The Effect Of Sweeteners In Drosophila Melanogaster's Locomotion., Araceli Francisco
The Effect Of Sweeteners In Drosophila Melanogaster's Locomotion., Araceli Francisco
The International Student Science Fair 2018
This research aims to measure how much locomotion is affected in Drosophila melanogaster considering the alimentation. The experiment was divided in a control group, a group fed with natural sugar and another fed with artificial sugar. The diets were prepared based on standard laboratory food (SLF) by varying the sugar. Several generations were grown. The locomotion was measured through monitors with infrared lasers which calculated the number of times the fly passed through it. They were accustomed to a day and night cycle and were kept under observation for a period of 13 days. As a result, the group that …
A Humanized Hypertrophic Cardiomyopathy Model To Elucidate Molecular Mechanism In Disease Pathology, Ragavi Vijayakumar, Maxine Hong
A Humanized Hypertrophic Cardiomyopathy Model To Elucidate Molecular Mechanism In Disease Pathology, Ragavi Vijayakumar, Maxine Hong
The International Student Science Fair 2018
Hypertrophic cardiomyopathy (HCM), that clinically manifests as an enlarged heart is a highly prevalent cardiac disorder with propensity towards arrhythmia-induced sudden cardiac death. The mechanism of HCM remains poorly defined, necessitating further understanding of the disease for improved therapeutic strategies. As it is challenging to obtain cardiac biopsies from human subjects, using induced pluripotent stem cells technology, we generated cardiomyocytes (CMs) in a dish from HCM patients. These HCM-CMs presented the clinical manifestation in that they were significantly larger in size in comparison to control (healthy)-CMs. Furthermore, gene expression profiling of cardiac ion channels revealed increased transcripts encoding for calcium …
Light-Induced Expression Of A Blue Coral Protein In An Industrial Fungus, Lindsay Tomczak
Light-Induced Expression Of A Blue Coral Protein In An Industrial Fungus, Lindsay Tomczak
Honors Theses
The ultimate goal of this research project is to improve the growth and structural characteristics of an Ecovative Design LLC (Green Island, NY) production strain to produce commercial biomaterials for packaging. These biomaterials are produced from renewable resources and can be easily broken down after they fulfill their purpose, unlike the commonly used materials today (such as Styrofoam). In an effort to quantify the light-reactivity of the fungus, a codon-optimized DNA sequence coding a blue chromoprotein was introduced and utilized as a visual reporter gene. Transcriptional controlling sequences were identified from orthologs to specific light-regulated genes and were combined with …
Crispr Genetic Editing: Paths For Christian Acceptance And Analysis Of In Vivo And In Vitro Efficiency, Mandeep Sandhu
Crispr Genetic Editing: Paths For Christian Acceptance And Analysis Of In Vivo And In Vitro Efficiency, Mandeep Sandhu
Scripps Senior Theses
With advancements in CRISPR-cas9 broadening the potential paths for clinical usage of genetic editing, conversations about genetic editing have grown to outside simply scientific communities and into mainstream conversations. This study focuses specifically on Christian discourse of genetic editing and locates four major tensions for many Christians when they think about genetic editing: beginning of life, Creator-human relationship, imago Dei, and stewardship. With these major concerns in mind, I identify epigenetics, somatic cell genetic editing, and in vivo genetic editing research as important research paths to pursue as they can potentially produce techniques that more Christian individuals would feel comfortable …
Unseen Science: Modern Discoveries Too Far Away Or Tiny For Human Eyes, Lucy Huang
Unseen Science: Modern Discoveries Too Far Away Or Tiny For Human Eyes, Lucy Huang
Capstones
As science has progressed, scientists have realized that evidence goes beyond the realms of physical sight. Whether it is too small or difficult to find, scientists have developed different ways to get around this problem. We see this in cancer genomics and in extrasolar planetary research. Scientists use what they know and what they measure to validate their work.
https://lucy-huang-9tge.squarespace.com/
Software Development For Genome Sequence Analysis, David Farr
Software Development For Genome Sequence Analysis, David Farr
Symposium Of University Research and Creative Expression (SOURCE)
The cost of genome sequencing has decreased rapidly, expanding availability for many biological applications (Muir 2016). For example, researchers can now obtain genome sequences from multiple populations under different types of selection. Comparison of these sequences allows for identification of chromosome regions and specific genes associated with adaptive evolution (Kelly 2013). As an increasing number of researchers engage in this type of inquiry, many have created in-house computer scripts to analyze the raw sequence data (e.g., Kelly 2013), creating a gap in both continuity and standardization.
Using a test dataset and preliminary results from an ongoing artificial selection experiment in …
Separation Of Blood Mixtures Using Fluorescently Labeled Antibodies, Christopher Ehrhardt, Dani Jabado, Emily Brocato
Separation Of Blood Mixtures Using Fluorescently Labeled Antibodies, Christopher Ehrhardt, Dani Jabado, Emily Brocato
Undergraduate Research Posters
Identifying and analyzing biological mixture samples at a crime scene are of paramount concern for forensic scientists, especially if that type of evidence contains only one cell type. The presence of multiple contributors in a biological evidence sample reduces the probative value of DNA evidence and can sometimes lead to its eventual loss of value. As such, this study was performed in an attempt to examine and evaluate flow cytometry analysis as a means to separate blood mixture samples labeled with fluorescent antibodies. Fluorescein Isothiocyanate (FITC) antibodies were specifically targeted and bound to HLA (Human Leukocyte Antigens) markers present on …
Dynamics Of Gene Networks In Cancer Research, Paul Scott
Dynamics Of Gene Networks In Cancer Research, Paul Scott
Electronic Theses and Dissertations
Cancer prevention treatments are being researched to see if an optimized treatment schedule would decrease the likelihood of a person being diagnosed with cancer. To do this we are looking at genes involved in the cell cycle and how they interact with one another. Through each gene expression during the life of a normal cell we get an understanding of the gene interactions and test these against those of a cancerous cell. First we construct a simplified network model of the normal gene network. Once we have this model we translate it into a transition matrix and force changes on …
Optimization Of A Genomic Editing System Using Crispr/Cas9-Induced Site-Specific Gene Integration, Jillian L. Mccool Ms., Nick Hum, Gabriela G. Loots
Optimization Of A Genomic Editing System Using Crispr/Cas9-Induced Site-Specific Gene Integration, Jillian L. Mccool Ms., Nick Hum, Gabriela G. Loots
STAR Program Research Presentations
The CRISPR-Cas system is an adaptive immune system found in bacteria which helps protect against the invasion of other microorganisms. This system induces double stranded breaks at precise genomic loci (1) in which repairs are initiated and insertions of a target are completed in the process. This mechanism can be used in eukaryotic cells in combination with sgRNAs (1) as a tool for genome editing. By using this CRISPR-Cas system, in addition to the “safe harbor locus,” ROSAβ26, the incorporation of a target gene into a site that is not susceptible to gene silencing effects can be achieved through few …