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Full-Text Articles in Cell and Developmental Biology

The Regulation Of Chemokinesis By The Soil Amoeba, Dictyostelium Discoideum, Julia Horan May 2021

The Regulation Of Chemokinesis By The Soil Amoeba, Dictyostelium Discoideum, Julia Horan

Honors Scholar Theses

Many types of cells crawl on solid surfaces by amoeboid locomotion. Membrane protrusions, such as pseudopods, are generated by outward directed forces and the cell body retracts to allow the cell to migrate on the surface. The movement can be random, or can be directional in response to diffusible (chemotaxis) or surface associated signals (haptotaxis). It has been known for some time that chemotactic signals also lead to an increase in overall cell speed (chemokinesis), however the mechanism of this speed increase is unknown. This project investigates the cellular signaling pathways involved in the regulation of cell speed by ligands …


The Signaling Pathways Of Metallothionein-Mediated Chemotaxis In Breast Cancer, Jennifer Messina May 2019

The Signaling Pathways Of Metallothionein-Mediated Chemotaxis In Breast Cancer, Jennifer Messina

University Scholar Projects

Metallothionein (MT) is a small, thiol rich protein released into the extracellular environment in response to stress. Elevated expression of MT has been linked to many inflammatory diseases including inflammatory bowel diseases, diabetes, and cancer. In breast cancer, high expression of MT has been associated with poor patient prognosis. Previous studies have shown that MT acts as a chemoattractant in lymphocytes, and that UC1MT, a monoclonal anti-MT antibody, can block this chemotactic response. In addition, it has been shown that both Cholera toxin and Pertussis toxin, which are known antagonists of G-protein coupled receptors, can inhibit MT-mediated chemotaxis. Here, I …


The Signaling Pathways Of Metallothionein-Mediated Chemotaxis In Breast Cancer, Jennifer Messina May 2019

The Signaling Pathways Of Metallothionein-Mediated Chemotaxis In Breast Cancer, Jennifer Messina

Honors Scholar Theses

Metallothionein (MT) is a small, thiol rich protein released into the extracellular environment in response to stress. Elevated expression of MT has been linked to many inflammatory diseases including inflammatory bowel diseases, diabetes, and cancer. In breast cancer, high expression of MT has been associated with poor patient prognosis. Previous studies have shown that MT acts as a chemoattractant in lymphocytes, and that UC1MT, a monoclonal anti-MT antibody, can block this chemotactic response. In addition, it has been shown that both Cholera toxin and Pertussis toxin, which are known antagonists of G-protein coupled receptors, can inhibit MT-mediated chemotaxis. Here, I …