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Full-Text Articles in Molecular Biology

Effect Of Lead On Vma1 Atpase Gene Expression And Feeding Behavior In Tetrahymena Thermophila, Sarah Butler, Jazmine E. Townsend Apr 2019

Effect Of Lead On Vma1 Atpase Gene Expression And Feeding Behavior In Tetrahymena Thermophila, Sarah Butler, Jazmine E. Townsend

Carroll College Student Undergraduate Research Festival

Lead is an environmental toxin that has been sown to have deleterious effects on human health, including neurological defects, developmental delays, and bodily pain. The purpose of this experiment was to test whether prolonged exposure to lead altered expression of the VMA1 gene and feeding behavior in the model organism, Tetrahymena thermophila. The VMA1 gene encodes the protein VMA1 (Vacuolar Membrane ATPase) which assists in regulating active transport systems on the vacuolar membrane. We hypothesized that exposure of T. thermophila to lead would result in altered expression of the VMA1 gene and in the feeding behavior of these organisms. For ...


Investigating The Effect Of Phytosterol Concentration On The Des7 Gene And Feeding Behavior In Tetrahymena Thermophila, Nate Burman, Dylan Jones Apr 2019

Investigating The Effect Of Phytosterol Concentration On The Des7 Gene And Feeding Behavior In Tetrahymena Thermophila, Nate Burman, Dylan Jones

Carroll College Student Undergraduate Research Festival

This study examined the impact of phytosterols on DES7 gene expression and feeding behavior in Tetrahymena thermophila. Tetrahymena thermophila are single-celled protists that are often used as model organisms for studying basic processes of Molecular Biology. One major topic in Molecular Biology that has been extensively studied in Tetrahymena is the concept of gene regulation. Gene regulation helps determine whether a certain protein is produced, and this often depends on both the internal and external conditions of the organism. This project took a closer look at the way Tetrahymena process exogenous cholesterol molecules through the production of the DES7 enzyme ...


Effects Of Ethanol On The Gene Expression Of Uracil Dna N-Glycosylase 1 (Ung1) And Growth Rate In Tetrahymena Thermophila, Samantha Mundel, Seth Berkowitz Apr 2019

Effects Of Ethanol On The Gene Expression Of Uracil Dna N-Glycosylase 1 (Ung1) And Growth Rate In Tetrahymena Thermophila, Samantha Mundel, Seth Berkowitz

Carroll College Student Undergraduate Research Festival

Alcohol (ethanol) interferes with human health in a variety of ways such as heart damage, liver damage, and specifically, DNA damage. The purpose of this experiment is to explore the effects of ethanol on the growth rate and expression of the uracil DNA N-Glycosylase (UNG1 ) gene in Tetrahymena thermophila. It was hypothesized that expression of UNG1, the gene that codes for the enzyme uracil DNA N-Glycosylase, would increase and that growth rate would decrease in Tetrahymena cells exposed to ethanol. Previous studies suggest that UNG1 expression is increased when DNA is damaged. This enzyme is involved in base excision repair ...


Effect Of Turmeric On Oxidatively Stressed Tetrahymena Thermophila Cells, Logan Meeks, Luke R. Mcentee Apr 2019

Effect Of Turmeric On Oxidatively Stressed Tetrahymena Thermophila Cells, Logan Meeks, Luke R. Mcentee

Carroll College Student Undergraduate Research Festival

Reactive oxygen species (ROSs) are chemically reactive forms of oxygen that, within a cellular environment, form free radicals that interfere with cellular processes and damage DNA. ROSs are routinely produced during oxidative metabolic processes that occur within the mitochondria and their presence in the cell must be tightly regulated. The OXR1 gene encodes a protein that is essential to the degradation of ROSs primarily in the nucleus and in the mitochondria. In this study, we wanted to determine whether turmeric had a protective effect on ROS-induced oxidative stress through regulation of the OXR1 gene in the model organism Tetrahymena thermophila ...


Effect Of Bis (2-Ethylhexyl) Phthalate On Tetrahymena Thermophila Dcl-1 Gene Expression And Conjugation, Talya Vaira, Peyton Twete Apr 2019

Effect Of Bis (2-Ethylhexyl) Phthalate On Tetrahymena Thermophila Dcl-1 Gene Expression And Conjugation, Talya Vaira, Peyton Twete

Carroll College Student Undergraduate Research Festival

Phthalates, often referred to as plasticizers, are a group of chemicals used in hundreds of products including detergents, food packaging, and nail polish. Bis (2-ethylhexyl) phthalates (DEHP) have recently been shown to disrupt endocrine chemical balances, thereby causing reproductive strain. For this project, we wanted to explore how DEHP influences conjugation in Tetrahymena thermophila and to determine how DEHP exposure affects expression of the DCL-1 gene. The DCL-1 gene encodes the protein DCL-1 which is essential for transmitting genetic information during the process of conjugation in T. thermophila. We hypothesized that DEHP will act as a repressor of conjugation resulting ...


Pesticides And Parkinson's: An Investigation Of The Effect Of Roundup Exposure On Drosophila Melanogaster, Siobhan O'Neill Apr 2019

Pesticides And Parkinson's: An Investigation Of The Effect Of Roundup Exposure On Drosophila Melanogaster, Siobhan O'Neill

Carroll College Student Undergraduate Research Festival

From commercial farms to private households, Roundup is the most commonly used herbicide in the United States. In recent years, exposure to Roundup has been correlated with a variety of health problems including Celiac Disease, birth defects, kidney and liver diseases, Alzheimer's Disease, and Parkinson's Disease. To date, the use of Roundup has been banned or restricted in several foreign countries, including the Netherlands, Portugal, Germany and Italy, because it has been classified as a possible carcinogen by the World Health Organization. The goal of this research was to determine the effects of Roundup exposure on dopaminergic neurons ...


The Effects Of Roundup On Tetrahymena Thermophila Growth And Cytochrome P450 Gene Expression, Ethan Viles, Henry Walker Apr 2019

The Effects Of Roundup On Tetrahymena Thermophila Growth And Cytochrome P450 Gene Expression, Ethan Viles, Henry Walker

Carroll College Student Undergraduate Research Festival

Roundup is a very common herbicide in the United States, but has been linked to many detrimental health effects and was classified as ‘probably carcinogenic’ by the World Health Organization in 1994. Not much research has been done to elucidate the possible effects on non-cancer gene pathways.The goal of this project was to research the influence that exposure to Roundup has on the growth of Tetrahymena thermophila and the expression of the cytochrome p450 gene. It was hypothesized that Roundup exposure would change the expression of cytochrome p450 gene and would decrease the growth rate of Tetrahymena thermophila. Background ...


Effect Of Potassium Bromate On Oxr1 Gene Expression And Cell Growth In Tetrahymena Thermophila, Brendan Mcmahon, Scott Kahle Apr 2018

Effect Of Potassium Bromate On Oxr1 Gene Expression And Cell Growth In Tetrahymena Thermophila, Brendan Mcmahon, Scott Kahle

Carroll College Student Undergraduate Research Festival

Investigation of Tetrahymena Thermophila’s Response to Oxidative Damage

The purpose of our experiment was to answer the question: Does oxidative damage, induced by potassium bromate (KBrO3), affect the growth rate and the expression of the OXR1 gene in Tetrahymena Thermophila? It was hypothesized that the expression of OXR1 would increase in Tetrahymena that were exposed to potassium bromate and that their growth rate would decrease. The exact mechanism and function of the OXR1 gene is still unknown, however, the literature suggests that it is required for oxidative damage resistance. To test the hypothesis Tetrahymena were randomly assigned to either ...