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Articles 1 - 23 of 23
Full-Text Articles in Cell and Developmental Biology
Investigating The Role Of Bs21 In Vancomycin-Resistant Staphylococcus Aureus, Daniel Floyd
Investigating The Role Of Bs21 In Vancomycin-Resistant Staphylococcus Aureus, Daniel Floyd
Senior Honors Projects
Staphylococcus aureus is a Gram-positive pathogenic bacterium commonly known for being the causative organism of staph infections in clinical settings. In previous literature, it has been observed that mutations in certain genes in S. aureus can result in resistance to commonly used antibiotics. Specifically, mutations in the gene rpsU, encoding the ribosomal protein bS21, have been present in strains of S. aureus resistant to the antibiotic vancomycin. The aim of my project is to validate these findings by creating a strain of S. aureus without bS21 and performing an antibiotic assay to determine the level of resistance to vancomycin …
Multicopy Suppression Of Ribosomal Protein Deletion Mutants, Jacqualine Cerbone
Multicopy Suppression Of Ribosomal Protein Deletion Mutants, Jacqualine Cerbone
Senior Honors Projects
To suppress the ribosome assembly defective phenotype of a ribosomal protein uS17- deficient mutant, various ribosomal proteins were used to act as multicopy suppressors. Ribosomal protein uS17 is a highly conserved component of the 30S (small) ribosomal subunit and is important for 30S subunit assembly. Mutants with a deletion of rpsQ (the gene encoding uS17) are viable but have a severe 30S subunit assembly defect and a temperature-sensitive (ts) phenotype. While fully assembled 30S subunits do form, incomplete ("20S") particles lacking several proteins accumulate. We hypothesized that increasing the intracellular concentration of one or more of the proteins missing from …
Ciliate Endosymbiont Imaging Methodology, Aidan Boving, Roxanne Beinart
Ciliate Endosymbiont Imaging Methodology, Aidan Boving, Roxanne Beinart
Senior Honors Projects
Ciliates, a phylum of diverse microbial eukaryotes, are found in a wide range of environments, including anoxia. Anaerobic ciliates host intracellular methanogenic archaea – a unique type of symbiosis. Despite their importance, anaerobic ciliates and their symbiotic relationships remain understudied. Included in this is the ability to image and quantify the intracellular methanogenic symbionts in a precise, timely and replicable procedure. This project aimed to improve the current fluorescence microscopy methodology used for endosymbiont quantification. The proposed method is intended for use with the Opera Phenix, a high throughput spinning disk confocal microscope which can count large amounts of individual …
Acute Promyelocytic Leukemia: A Case Study Correlating Cytogenetic Abnormality With Prognosis, Alyssa Lamond, Theresa Tellier-Castellone
Acute Promyelocytic Leukemia: A Case Study Correlating Cytogenetic Abnormality With Prognosis, Alyssa Lamond, Theresa Tellier-Castellone
Senior Honors Projects
Advancements in medical technology today have positively impacted the diagnosis, treatment, and prognosis of cancers. Particularly acute promyelocytic leukemia (APL) has completely improved from having the poorest prognosis to one of the best. Acute promyelocytic leukemia is a malignant disease of hematopoietic tissue classified by WHO as leukemia with >20% blasts from the myeloid lineage, specifically promyelocytes. Determined in 1976, FAB classified AML subtypes M1-M7, with APL being M3. Specific characteristics classify the subtype of AML, with each resulting from a different genetic abnormality. The focus of APL diagnosis, treatment, and prognosis occurs around the known PML-RARα fusion gene. Flow …
Developing A Modern Microbiology Laboratory Manual To Enhance Student Learning, Alexander Yonchak
Developing A Modern Microbiology Laboratory Manual To Enhance Student Learning, Alexander Yonchak
Senior Honors Projects
My project has been addressing the issue of incorporating recent developments in biosafety and pedagogical approaches for lab-courses into our existing educational curriculum by developing a new, modern lab manual aimed at improving experiential learning for introductory microbiology teaching labs. Through researching the most recent safety regulations, industry standards, & guidelines for such teaching labs, my manual clearly delineates learning outcomes to match the skills expected of undergraduates completing degrees within the life sciences. In addition, the lab manual that I have designed has been modernized to incorporate the most recent recommended safety precautions and is written in a user-friendly …
Ms In Cytology, Joanna Burkhardt
Histology For Cytotechnologists Ii Mls 568, Joanna Burkhardt
Histology For Cytotechnologists Ii Mls 568, Joanna Burkhardt
Library Impact Statements
No abstract provided.
Genetic Testing And A Real World Case Of Lynch Syndrome, Paige Montanaro
Genetic Testing And A Real World Case Of Lynch Syndrome, Paige Montanaro
Senior Honors Projects
In recent years, advancements in genetic testing methods have revolutionized the medical field by enhancing the ability to identify persons with an inherited predisposition to cancer. According to the American Society for Clinical Oncology, individuals should undergo genetic testing when he or she meets the following criteria: the individual demonstrates familial history that indicates a predisposition to certain cancers, the test can be adequately interpreted, and the results will aid in the diagnosis, treatment, or management of the patient or additional family members at risk. Genetic testing can be done on samples of hair, skin, blood, amniotic fluid, or other …
Mechanism Of Lck Activation In Driving Leukemia Cell Proliferation, Hannah E. Dobson
Mechanism Of Lck Activation In Driving Leukemia Cell Proliferation, Hannah E. Dobson
Senior Honors Projects
Leukemia is a type of cancer that develops in blood-forming tissues of the immune system. These tissues can include the bone marrow or sites within the lymphatic system such as the lymph nodes. Leukemia progresses from a mutational event within a white blood cell. Often this mutation alters the cell’s normal life cycle, resulting in uninhibited cell division and growth. With this uncontrolled cell proliferation, mutated white blood cells accumulate and begin interfering with the functioning of healthy cells.
Scientists are unsure of the exact mechanisms required for leukemia development. However, recently scientists identified four characteristic mutations in the protein …
Experimental Approaches In Molecular And Cell Biology Cmb 460, Michael Cerbo
Experimental Approaches In Molecular And Cell Biology Cmb 460, Michael Cerbo
Library Impact Statements
No abstract provided.
Epigenetic Regulation Of Gene Expression During Spermatogenesis, Karishma Nayak
Epigenetic Regulation Of Gene Expression During Spermatogenesis, Karishma Nayak
Senior Honors Projects
In the US livestock production industry, improving reproductive efficiency will improve animal welfare and maintain reasonable costs of meat and milk for consumers. In recent research, abnormalities in epigenetic markers in sperm during spermatogenesis, has been linked to male subfertility in many species. Epigenetics is the study of changes in organisms caused by modifications of gene expression, including DNA methylation, rather than alteration of the genetic code itself. When this process is disturbed, it can negatively impact semen therefore decreasing its fertility. Through further research on how DNA methylation influences gene expression during spermatogenesis and its impact on sperm quality, …
Defining The Sites Of Interaction Of The Fancd2, Fance, And Fancl Proteins, Joseph Mcclanaghan
Defining The Sites Of Interaction Of The Fancd2, Fance, And Fancl Proteins, Joseph Mcclanaghan
Senior Honors Projects
Fanconi anemia (FA) is a rare genetic disease characterized by congenital defects, bone marrow failure and increased cancer susceptibility. FA is caused by mutations in any one of 16 genes. These genes encode for proteins that function in the FA-BRCA pathway to repair damaged DNA. Because of its important role in DNA repair, this pathway is considered a major cellular tumor suppressor pathway, i.e. is critical for the prevention of cancer. Underscoring this fact, several of the FA genes - including BRCA2, BRIP1, PALB2, and RAD51C - are bona fide breast and ovarian cancer susceptibility genes.
My …
Molecular Chaperone Tools For Use Against Neurodegenerative Diseases, Matthew Tinkham
Molecular Chaperone Tools For Use Against Neurodegenerative Diseases, Matthew Tinkham
Senior Honors Projects
A noted characteristic found in several neurodegenerative disorders, including Alzheimer’s Disease, Parkinson’s Disease, Huntington’s Disease and bovine spongiform encephalopathy, is the accumulation of amyloid plaques in the brain. Amyloid plaques contain deposits of fibrillar aggregates of misfolded proteins that disrupt normal functionality in neurons. Certain variants of these misfolded proteins are self-replicating; these self-replicating amyloids are termed prions (for infectious protein). We are interested in how protein misfolding contributes to amyloid formation and how molecular chaperone proteins can change the formation of amyloid deposits. Chaperone proteins function by catalyzing the proper folding of other proteins, the refolding of misfolded proteins, …
The Importance Of Epigenetic Phenomena In Regulating Activity Of The Genetic Material, Sin Chan
The Importance Of Epigenetic Phenomena In Regulating Activity Of The Genetic Material, Sin Chan
Senior Honors Projects
Genetics has taught us that genes are represented as discrete sequences within a larger DNA molecule found embedded within the chromosomes of a living cell. Collectively these chromosomes and their associated genes carry all of the instructions for life. Until recently, the prevailing thought has been that genes are destiny in the life of an individual since the genes carry the information that determines the general traits and characteristics associated with that individual. The relatively recent understanding of mechanisms that underlie epigenetic phenomena has led to a rethinking of this concept. Epigenetics describes cellular mechanisms that explain how two individuals …
A Search For Light-Detecting Proteins In The Free-Living Protist, Tetrahymena Thermophila: Does Tetrahymena Have Opsin-Like Or Bacteriorhodopsin-Like Proteins?, Jillian Marie Rainville
A Search For Light-Detecting Proteins In The Free-Living Protist, Tetrahymena Thermophila: Does Tetrahymena Have Opsin-Like Or Bacteriorhodopsin-Like Proteins?, Jillian Marie Rainville
Senior Honors Projects
Tetrahymena is a genus of ciliated protozoans, a diversified lineage of unicellular eukaryotes. They are freshwater organisms, and generally inhabit streams, lakes, and ponds. Tetrahymena thermophila is commonly studied as a model cell because of its unique variety of complex and specialized cell structures and processes, which are similar to those of higher animals.
G-protein-coupled receptors (GPCRs) are transmembrane proteins that transduce stimuli from outside of the cell into intracellular signals, through the interaction of their intracellular domains with heterotrimeric G proteins. GPCRs make up a vast protein family that includes a variety of subfamilies with distinct functions. They are …
Analysis Of The Chondroitinase Operon Of Flavobacterium Columnare, Erin L. Sorlien
Analysis Of The Chondroitinase Operon Of Flavobacterium Columnare, Erin L. Sorlien
Senior Honors Projects
Analysis of the chondroitinase operon of Flavobacterium columnare
Erin Sorlien
Major
Cell and Molecular Biology, Chemistry
Advisor
Dr. David R. Nelson
Date
May 2, 2013
Keywords
Flavobacterium columnare, columnaris disease, chondroitin AC lyase, complementation, csl operon
Abstract
Flavobacterium columnare, an opportunistic bacterial pathogen of fish, is the causative agent of columnaris disease (CD). The bacterium is a Gram-negative rod that exhibits gliding motility and avidly forms biofilms. CD affects both wild and cultured freshwater fish, and continues to cause large economic losses to the fish farming industry. According to an investigation conducted by the National Animal Health Monitoring System, CD …
Mutation And Complementation Of A Cellulose Synthase (Cesa) Gene, Ahmed Y. El-Araby
Mutation And Complementation Of A Cellulose Synthase (Cesa) Gene, Ahmed Y. El-Araby
Senior Honors Projects
Cellulose is a carbohydrate polymer that is composed of repeating glucose subunits. Being the most abundant organic compound in the biosphere and comprising a large percentage of all plant biomass, cellulose is extremely plentiful and has a significant role in nature. Cellulose is present in plant cell walls, in commercial products such as those made from wood or cotton, and is of interest to the biofuel industry as a potential alternative fuel source. Although indigestible by humans, cellulose is nutritionally valuable, serving as a dietary fiber. Because of its ubiquity and importance in many areas, studying cellulose will prove to …
Library Impact Statement For Bps 455 Protein Molecular Modeling, Michael Vocino
Library Impact Statement For Bps 455 Protein Molecular Modeling, Michael Vocino
Library Impact Statements
Library Impact Statement for BPS 455 Protein Molecular Modeling. No new resources were required to support this course.
Library Impact Statement For Bps 555 Protein Molecular Modeling, Michael Vocino
Library Impact Statement For Bps 555 Protein Molecular Modeling, Michael Vocino
Library Impact Statements
Library Impact Statement for BPS 555 Protein Molecular Modeling. No new resources were required to support this course.
A Guide To The Continuing Investigation Of The Relationship Between The Cytoskeleton And Cell Wall In Developing Buds Of Physcomitrella Patens, Derek Brockman
A Guide To The Continuing Investigation Of The Relationship Between The Cytoskeleton And Cell Wall In Developing Buds Of Physcomitrella Patens, Derek Brockman
Senior Honors Projects
Persistent questions in biology address the nature of tissue organization and how information encoded in the genome can be manifested as a physical form. While the ‘final’ product of gene expression is a protein, science has yet to elucidate how those proteins are able to interact with other cellular components and external forces to generate a specific cell shape. This complex process is critical in determining not only the shape of an individual cell but also that of an entire organ. In plants, cell shape is controlled by cellulose microfibrils of the cell wall, which are typically oriented perpendicular to …
Characterization Of The Interaction Between The Fanconi Anemia (Fa) D2 Protein And Proliferating Cell Nuclear Antigen (Pcna), Carolyn Schmiedel
Characterization Of The Interaction Between The Fanconi Anemia (Fa) D2 Protein And Proliferating Cell Nuclear Antigen (Pcna), Carolyn Schmiedel
Senior Honors Projects
No abstract provided.
16s Ribosomal Dna Sequencing Confirms The Synonymy Of Vibrio Harveyi And V. Carchariae, Eric J. Gauger, Marta Gomez-Chiarri
16s Ribosomal Dna Sequencing Confirms The Synonymy Of Vibrio Harveyi And V. Carchariae, Eric J. Gauger, Marta Gomez-Chiarri
Fisheries, Animal and Veterinary Sciences Faculty Publications
Seventeen bacterial strains previously identified as Vibrio harveyi (Baumann et al. 1981) or V. carchariae (Grimes et al. 1984) and the type strains of V. harveyi, V. carchariae and V. campbellii were analyzed by 16S ribosomal DNA (rDNA) sequencing. Four clusters were identified in a phylogenetic analysis performed by comparing a 746 base pair fragment of the 16S rDNA and previously published sequences of other closely related Vibrio species. The type strains of V. harveyi and V. carchariae and about half of the strains identified as V. harveyi or V. carchariae formed a single, wellsupported cluster designed as ‘bona …
The Life History Of An Animal Cell, William Ferguson Harley
The Life History Of An Animal Cell, William Ferguson Harley
Student and Lippitt Prize Essays
Chronicles the life cycle of an animal’s cell, including physical features of the cell, formation of new cells and cell divisions.