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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 ...


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 Egta On Sit1 Scramblase Gene Expression And Cell Growth In Tetrahymena Thermophila, Emma Esposito, Theda Knauth, Amelia Ohnstad, Stefanie Otto-Hitt Jul 2018

Effect Of Egta On Sit1 Scramblase Gene Expression And Cell Growth In Tetrahymena Thermophila, Emma Esposito, Theda Knauth, Amelia Ohnstad, Stefanie Otto-Hitt

Life and Environmental Sciences Course-based Research Projects

Scramblase is an enzyme that facilitates the movement of newly synthesized phospholipids from the cytosolic side to the extracellular side of the lipid bilayer. This process is vital for cell membrane repair and growth. In Tetrahymena thermophila, the gene SIT1 encodes for the Scramblase protein, whose functionality is Ca2+-dependent. In this experiment, the concentration of accessible Ca2+ ions was decreased in order to observe whether the change had an aect on the expression of SIT1 and cell growth. It was hypothesized that expression of the SIT1 gene would increase, while cell growth would decrease. To carry out the experiment ...


In Situ Hybridization Technique As Applied To Cytogenetics, Daniel Coverdell Apr 1988

In Situ Hybridization Technique As Applied To Cytogenetics, Daniel Coverdell

Life and Environmental Sciences Undergraduate Theses

In our experimentation with the in situ hybridization technique we were unable to band chromosomes with the standard Giemsa staining procedure following autoradiography. Banding was achieved using a replication banding technique in which bromodeoxyuridine (BrdU) was incorporated during replication. The background particles and debris on the chromosomal preparations, which had been in situ hybridized, was reduced by maintaining constant agitation during post-hybridization washes. Excessive background streaks, resulting from cracks in the radiography emulsion, were nearly eliminated by heating the emulsion to 50° C while dipping the slides.