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Articles 1 - 10 of 10
Full-Text Articles in Life Sciences
A Review Of How Bioinformatics And Genome Sequencing Are Affecting Precision Medicine, Taylor S. Hickey
A Review Of How Bioinformatics And Genome Sequencing Are Affecting Precision Medicine, Taylor S. Hickey
Honors Theses
Advancement in genomic sequencing and bioinformatics methods have been affecting biomedical research through precision medicine, especially in the area of cancer. Vaccine therapies can be developed using neoantigens that target specific mutations in tumors. The goals of this research are to identify mutations that lead to cancer and then define subpopulations in which patients can easily be identified. The future goal is to have targeted vaccines that are specific to each subpopulation ready to be used in treatment of their cancer. Limitations to reaching these goals have been due to tumor heterogeneity, cancer location, and difficulty in creating neoantigens for …
The Effects Of Temperature And Mito-Nuclear Interaction On Male Fertility In Drosophila., Violetta Bakunina
The Effects Of Temperature And Mito-Nuclear Interaction On Male Fertility In Drosophila., Violetta Bakunina
Honors Theses
The (simw501);Ore genotype is a strain of Drosophila melanogaster that has impaired mitochondrial function as a result of a disrupted interaction between a mitochondrially-encoded tRNATyr and the nuclear-encoded synthetase that aminoacylates mt-tRNATyr. We hypothesized that disruption of mitochondrial protein synthesis and oxidative phosphorylation (OXPHOS) in this genotype decreases mitochondrial translation and results in the sterility of (simw501);OreR males at 28oC. The results of Mitotracker staining showcased the reduced Mean Fluorescence Intensity (MFI), which confirms that sterility has an energetic basis, yet also that mature sperm function is compromised. Cytological dissection of male gonads …
Genomic Analysis Of Acetoanaerobium Sp. Vlb-1, An Anaerobic Bacterium Isolated From Nebraska's Eastern Saline Wetlands, Claire Martin
Genomic Analysis Of Acetoanaerobium Sp. Vlb-1, An Anaerobic Bacterium Isolated From Nebraska's Eastern Saline Wetlands, Claire Martin
Honors Theses
Through the analysis of genetic code, the genomic and physiological characteristics of an environmental anaerobic bacterial isolate, Acetoanaerobium sp. strain VLB-1, can be determined and significant pathways can be identified in its significance to the environment. This particular organism was isolated from the Eastern Saline Wetlands in Lincoln, NE. With this isolate, an investigation into elemental and amino acid cycling via the Stickland reaction and the Wood-Ljungdahl pathway was conducted to determine possible metabolic products. The Stickland reaction is a relatively newly discovered pathway, observed in the genus Clostridium. A. sticklandii is the main model for this method of …
Using Crispr-Cas9 To Construct Knockout Mutants In Dna-Repair Genes In Arabidopsis Thaliana, David Campbell
Using Crispr-Cas9 To Construct Knockout Mutants In Dna-Repair Genes In Arabidopsis Thaliana, David Campbell
Honors Theses
The mitochondria are known as the powerhouse of the cell, and just like a real powerhouse, it can be a dangerous place to store sensitive information. Energy generation and redox reactions in the mitochondria can cause damage to the DNA stored there, resulting in a higher mutation rate. Compared to their animal counterparts, however, plant mitochondria exhibit a lower mutation rate and a higher recombination rate. It is hypothesized that the unique DNA repair methods present in plant mitochondria are responsible for the phenomena observed there. To study the mechanics of DNA-repair in this organelle, however, researchers must be able …
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 …
Terms Of Service: The Use And Protection Of Genomic Information By Companies, Databases, And Law Enforcement, Sophia Kallas
Terms Of Service: The Use And Protection Of Genomic Information By Companies, Databases, And Law Enforcement, Sophia Kallas
Honors Theses
Private genomic companies have become a popular trend in the last two decades by providing customers with information regarding their ancestry and health risks. However, the profiles received from these companies can also be uploaded to public databases for various purposes, including locating other family members. Both testing companies and public databases have private interests, and both are at risk of law enforcement intervention for the purpose of forensic familial searching. There is little federal legislation protecting the privacy of an individual’s genetic profile. Consequently, it has been up to federal agencies, state laws, and judicial precedents to prevent the …
Error In Dna Mixture Analysis: Why The Application Of Forensic Dna Is Not A Perfect Science, Rachel Bisbee
Error In Dna Mixture Analysis: Why The Application Of Forensic Dna Is Not A Perfect Science, Rachel Bisbee
Honors Theses
Ever since the first use of DNA evidence in 1986, it has been heavily relied on in court as a means of both convicting felons and exonerating wrongfully imprisoned people. It is a valuable tool in investigations, but like everything else, is not perfect. There have been studies on the accuracy of DNA mixture interpretation in the past with varying results. This is because mixture interpretation is a complicated process that is not always as specific as would be ideal. This study attempted to determine if two students with the exact same education in forensic science and, more specifically, DNA …
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 …
Copy Number Variation In The Porcine Genome Detected From Whole-Genome Sequence, Rebecca Anderson
Copy Number Variation In The Porcine Genome Detected From Whole-Genome Sequence, Rebecca Anderson
Honors Theses
Copy number variations (CNVs) are large insertions, deletions, and duplications in the genome that vary between individuals in a species. These variations are known to impact a broad range of phenotypes from molecular-level traits to higher-order clinical phenotypes. CNVs have been linked to complex traits in humans such as autism, attention deficit hyperactivity disorder, nervous system disorders, and early-onset extreme obesity. In this study, whole-genome sequence was obtained from 72 founders of an intensely phenotyped experimental swine herd at the U.S. Meat Animal Research Center (USMARC) in Clay Center, Nebraska. This included 24 boars (12 Duroc and 12 Landrace) and …
Genetic Diversity And Distinctness Of Wild Nebraska Hops And Hop Cultivars (Humulus Lupulus L.), Megan Franklin
Genetic Diversity And Distinctness Of Wild Nebraska Hops And Hop Cultivars (Humulus Lupulus L.), Megan Franklin
Honors Theses
Background Commercial hop (Humulus lupulus) cultivars that are being grown in the Midwest are not performing as successfully as when they are grown in the Pacific Northwest, the region to which they are adapted. To increase adaptation to the Midwest environment, one strategy is to draw from the genetic pool of wild native Midwest hops, which have developed genes that allow them to grow successfully in this environment. Wild hop plants that are genetically distinct from commercial cultivars are likely to have more adaptations, such as pest/disease resistance and drought tolerance, which can be bred into commercial lines. The …