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Articles 1 - 7 of 7
Full-Text Articles in Cell and Developmental Biology
Modeling And Analyzing An Optogenetic System For Photoactivatable Protein Dissociation, Anvin Thomas, James Schaff
Modeling And Analyzing An Optogenetic System For Photoactivatable Protein Dissociation, Anvin Thomas, James Schaff
Honors Scholar Theses
Computational modeling of cell-cell interactions can grant clues and can answer questions about an experiment, especially for observations about binding interactions and kinetics. This approach was used to investigate an interaction between a light-oxygen-voltage (LOV) domain and an engineered protein called Zdark (Zdk). The LOV domain is membrane-bound while Zdk is cytosolic. The LOV domain and Zdk bind strongly in dark (Kd 26.2 nM), and weakly upon exposure to blue light (Kd > 4 μM). Total internal reflection fluorescence (TIRF) images are acquired of Zdk, the fluorescent species bound to a mCherry tag, and the loss of fluorescence is …
Effect Of Silk-Based Hydrogel Topography On Intestinal Epithelial Cell Morphology And Wound Healing In Vitro, Marisa E. Boch
Effect Of Silk-Based Hydrogel Topography On Intestinal Epithelial Cell Morphology And Wound Healing In Vitro, Marisa E. Boch
University Scholar Projects
Recent advances in the field of biomaterials have suggested that cells cultured on substrates resembling the native tissue mechanical properties, matrix and growth factor composition, and topography can adopt phenotypes that more closely resemble the in vivo tissue compared to cells cultured on non-mimetic constructs. Understanding the effect of culture substrate on in vitro tissue formation is important for bioengineering applications that include mechanistic studies of healthy tissue function and development of disease models. In this work, Caco-2 adenocarcinoma cells were seeded on flat and crypt-like topographies of 3D-printed cytocompatible hydrogels derived from silk fibroin protein. Silk hydrogels were selected …
Pyruvate Kinase Isoform M2 Influences Autophagy And Related Processes In Hepatocellular Carcinoma Cells, Matthew Lin
Pyruvate Kinase Isoform M2 Influences Autophagy And Related Processes In Hepatocellular Carcinoma Cells, Matthew Lin
University Scholar Projects
Hepatocellular carcinoma (HCC) is the most common form of liver cancer that affects ~14 million people in the world. Like all cancers, HCC is a disease that arises from unstinted cellular growth initiated by genetic alterations, metabolic changes, and dysregulation in key cellular pathways. Of interest is the relationship between metabolism and cell proliferation/degradation for therapeutic targeting. Pyruvate kinase M2 is a dimeric, glycolytically inactive isoform of the final enzyme involved in glycolysis, that is often upregulated in cancerous tissue. It is thought that the enzymatic function of PKM2 outside of glycolysis contributes to the biosynthesis of anabolic intermediates used …
Effect Of Silk-Based Hydrogel Topography On Intestinal Epithelial Cell Morphology And Wound Healing In Vitro, Marisa E. Boch
Effect Of Silk-Based Hydrogel Topography On Intestinal Epithelial Cell Morphology And Wound Healing In Vitro, Marisa E. Boch
Honors Scholar Theses
Recent advances in the field of biomaterials have suggested that cells cultured on substrates resembling the native tissue mechanical properties, matrix and growth factor composition, and topography can adopt phenotypes that more closely resemble the in vivo tissue compared to cells cultured on non-mimetic constructs. Understanding the effect of culture substrate on in vitro tissue formation is important for bioengineering applications that include mechanistic studies of healthy tissue function and development of disease models. In this work, Caco-2 adenocarcinoma cells were seeded on flat and crypt-like topographies of 3D-printed cytocompatible hydrogels derived from silk fibroin protein. Silk hydrogels were selected …
Effects Of Piggybac Transposable Element Derived 5 (Pgbd5) In Cortical Tissue, Benjamin Shao
Effects Of Piggybac Transposable Element Derived 5 (Pgbd5) In Cortical Tissue, Benjamin Shao
Honors Scholar Theses
Many cancers are known to have genetic rearrangements, as these rearrangements develop abnormalities that can lead to certain types of cancer. Many of these genetic rearrangements can be caused by transposons, which are DNA sequences that can change its position and move to other positions within the genome. Transposons move to and integrate into a new location by the action of transposase enzymes, and recently genes that code for proteins similar to transposases and with transposase activity have been identified in the human and other vertebrate genomes. In this study, one of these genes, human piggyBac transposable element derived 5 …
Identifying New Genes Involved In Centromere Establishment, Megan Boyer
Identifying New Genes Involved In Centromere Establishment, Megan Boyer
Honors Scholar Theses
The centromere is a site on the chromosome that mediates accurate cell division by serving as a platform for kinetochore assembly, and microtubule attachment during cell division. Errors in the process of chromosome segregation can contribute to genetic irregularities, such as those seen in cancer and congenital defects. Our lab uses the ectopic centromere as a tool to discover what proteins may be involved in centromere establishment, defined as the deposition of CENP-A at the locus. We use the lacO/LacI system within Drosophila S2 cells that contain a CAL1-GFP- LacI transgene and an integrated lacO array to study the ectopic …
Reconstitution Of Gabaergic Postsynapses In Host Cells, Karthik Kanamalla
Reconstitution Of Gabaergic Postsynapses In Host Cells, Karthik Kanamalla
Honors Scholar Theses
Type A GABA receptors (GABAARs) can be found embedded in postsynaptic membranes or in a variety of extrasynaptic locations. Receptors with synaptic function are recruited to the postsynapse by submembranous scaffolds composed of gephyrin and collybistin (CB). This study was aimed at assessing whether the ability to interact with the scaffold differentiates synaptic from non-synaptic receptors. Using HEK293 cells as an expression system, and indirect immunofluorescence (IF), co-localization of extrasynaptic receptors α1β3δ and α4β3δ with the CB-gephyrin scaffold was assessed and compared with that of the synaptic receptor α1β3γ2. Results indicated that both extrasynaptic receptors were able to colocalize with …