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Articles 1 - 19 of 19
Full-Text Articles in Biotechnology
Understanding The Transcriptional Regulation Of Secondary Cell Wall Biosynthesis In The Model Grass Brachypodium Distachyon, Pubudu Handakumbura
Understanding The Transcriptional Regulation Of Secondary Cell Wall Biosynthesis In The Model Grass Brachypodium Distachyon, Pubudu Handakumbura
Doctoral Dissertations
Secondary cell wall synthesis occurs in specialized cell types following completion of cell enlargement. By virtue of mechanical strength provided by a wall thickened with cellulose, hemicelluloses, and lignin, these cells can function as water-conducting vessels and provide structural support. Several transcription factor families regulate genes encoding wall synthesis enzymes. Certain NAC and MYB proteins directly bind upstream of structural genes and other transcription factors. The most detailed model of this regulatory network is established predominantly for a eudicot, Arabidopsis thaliana. In grasses, both the patterning and the composition of secondary cell walls are distinct from that of eudicots. …
Intercellular Cooperation And Competition In Brain Cancers: Lessons From Drosophila And Human Studies, Indrayani Waghmare, Austin Roebke, Mutsuko Minata, Madhuri Kango-Singh, Ichiro Nakano
Intercellular Cooperation And Competition In Brain Cancers: Lessons From Drosophila And Human Studies, Indrayani Waghmare, Austin Roebke, Mutsuko Minata, Madhuri Kango-Singh, Ichiro Nakano
Biology Faculty Publications
Glioblastoma (GBM) is a primary brain cancer with an extremely poor prognosis. GBM tumors contain heterogeneous cellular components, including a small subpopulation of tumor cells termed glioma stem cells (GSCs). GSCs are characterized as chemotherapy- and radiotherapy-resistant cells with prominent tumorigenic ability. Studies in Drosophila cancer models demonstrated that interclonal cooperation and signaling from apoptotic clones provokes aggressive growth of neighboring tumorigenic clones, via compensatory proliferation or apoptosis induced proliferation. Mechanistically, these aggressive tumors depend on activation of Jun-N-terminal kinase (upstream of c-JUN), and Drosophila Wnt (Wg) in the apoptotic clones. Consistent with these nonmammalian studies, data from several mammalian …
Enhanced Expression Of Codon Optimized Mycobacterium Avium Subsp. Paratuberculosis Antigens In Lactobacillus Salivarius, Christopher D. Johnston, John P. Bannatine, Rodney Govender, Lorraine Endersen, Daniel Pletzer, Helge Weingart, Aidan Coffey, Jim O'Mahony, Roy D. Sleator
Enhanced Expression Of Codon Optimized Mycobacterium Avium Subsp. Paratuberculosis Antigens In Lactobacillus Salivarius, Christopher D. Johnston, John P. Bannatine, Rodney Govender, Lorraine Endersen, Daniel Pletzer, Helge Weingart, Aidan Coffey, Jim O'Mahony, Roy D. Sleator
Department of Biological Sciences Publications
It is well documented that open reading frames containing high GC content show poor expression in A+T rich hosts. Specifically, G+C-rich codon usage is a limiting factor in heterologous expression of Mycobacterium avium subsp. paratuberculosis (MAP) proteins using Lactobacillus salivarius. However, re-engineering opening reading frames through synonymous substitutions can offset codon bias and greatly enhance MAP protein production in this host. In this report, we demonstrate that codon-usage manipulation of MAP2121c can enhance the heterologous expression of the major membrane protein (MMP), analogous to the form in which it is produced natively by MAP bacilli. When heterologously over-expressed, antigenic determinants …
Cryopreservation Of Hepatocyte (Hepg2) Cell Monolayers: Impact Of Trehalose, Blake Stokich, Quinn Osgood, David Grimm, Shhyam Moorthy, Nilay Chakraborty, Michael A. Menze
Cryopreservation Of Hepatocyte (Hepg2) Cell Monolayers: Impact Of Trehalose, Blake Stokich, Quinn Osgood, David Grimm, Shhyam Moorthy, Nilay Chakraborty, Michael A. Menze
Michael Menze
A simple method to cryogenically preserve hepatocyte monolayers is currently not available but such a technique would facilitate numerous applications in the field of biomedical engineering, cell line development, and drug screening. We investigated the effect of trehalose and dimethyl sulfoxide (Me2SO) in cryopreservation of human hepatocellular carcinoma (HepG2) cells in suspension and monolayer formats. HepG2 cell monolayers were incubated for 24 h at varying concentrations of trehalose (50–150 mM) prior to cryopreservation to identify the optimum concentration for such preincubation. When trehalose alone was used as the cryoprotective agent (CPA), cells in monolayer format did not survive freezing while …
Cryopreservation Of Hepatocyte (Hepg2) Cell Monolayers: Impact Of Trehalose, Blake Stokich, Quinn Osgood, David Grimm, Shhyam Moorthy, Nilay Chakraborty, Michael A. Menze
Cryopreservation Of Hepatocyte (Hepg2) Cell Monolayers: Impact Of Trehalose, Blake Stokich, Quinn Osgood, David Grimm, Shhyam Moorthy, Nilay Chakraborty, Michael A. Menze
Faculty Research & Creative Activity
A simple method to cryogenically preserve hepatocyte monolayers is currently not available but such a technique would facilitate numerous applications in the field of biomedical engineering, cell line development, and drug screening. We investigated the effect of trehalose and dimethyl sulfoxide (Me2SO) in cryopreservation of human hepatocellular carcinoma (HepG2) cells in suspension and monolayer formats. HepG2 cell monolayers were incubated for 24 h at varying concentrations of trehalose (50–150 mM) prior to cryopreservation to identify the optimum concentration for such preincubation. When trehalose alone was used as the cryoprotective agent (CPA), cells in monolayer format did not survive freezing while …
Cryopreservation Of Hepatocyte (Hepg2) Cell Monolayers: Impact Of Trehalose, Blake Stokich, Quinn Osgood, David Grimm, Shhyam Moorthy, Nilay Chakraborty, Michael Menze
Cryopreservation Of Hepatocyte (Hepg2) Cell Monolayers: Impact Of Trehalose, Blake Stokich, Quinn Osgood, David Grimm, Shhyam Moorthy, Nilay Chakraborty, Michael Menze
Faculty Scholarship
A simple method to cryogenically preserve hepatocyte monolayers is currently not available but such a technique would facilitate numerous applications in the field of biomedical engineering, cell line development, and drug screening. We investigated the effect of trehalose and dimethyl sulfoxide (Me2SO) in cryopreservation of human hepatocellular carcinoma (HepG2) cells in suspension and monolayer formats. HepG2 cell monolayers were incubated for 24 h at varying concentrations of trehalose (50–150 mM) prior to cryopreservation to identify the optimum concentration for such preincubation. When trehalose alone was used as the cryoprotective agent (CPA), cells in monolayer format did not survive freezing while …
Construction And Characterization Of Non-Toxic Bacterial Enterotoxins As Vaccine Adjuvants, Lavanya Vempati
Construction And Characterization Of Non-Toxic Bacterial Enterotoxins As Vaccine Adjuvants, Lavanya Vempati
Boise State University Theses and Dissertations
The development of adjuvants that can promote the delivery of purified subunit vaccines by mucosal routes, such as the nose or the mouth, is recognized as a top priority for vaccine research. The bacterial enterotoxins; cholera toxin (CT) and E.coli heat-labile toxin (LTI), have long been recognized as powerful adjuvants with the ability to stimulate specific immune responses to co-administered antigens when delivered to mucosal surfaces. Shiga toxin 1 (ST1) and pertussis toxin (PT) are structurally homologous bacterial toxins secreted by Escherichia coli 0157:H7 and Bordetella pertussis respectively. ST1 and PT also have reported adjuvant activity but it is less …
Strategies To Sensitize Bladder Cancer Cells To Small Molecule Inhibitors Targeting The Pi3k Pathway, Giovanni Nitti
Strategies To Sensitize Bladder Cancer Cells To Small Molecule Inhibitors Targeting The Pi3k Pathway, Giovanni Nitti
Dissertations & Theses (Open Access)
After many years of cancer research, it is well accepted by the scientific community that the future cure for this disease lies in a personalized therapeutic approach. Anticipating therapeutic outcome based on the genetic signature of a tumor has become the new paradigm. The PI3K pathway represents an ideal target for bladder cancer, as many of the key proteins of this pathway are altered or mutated in this particular type of cancer. Several small molecule inhibitors have been developed to target this pathway, but their efficacy has been shown to be heterogeneous among different cell lines and mostly cytostatic but …
Metagenomic Identification Of A Novel Salt Tolerance Gene From The Human Gut Microbiome Which Encodes A Membrane Protein With Homology To A Brp/Blh-Family Beta-Carotene 15,15'-Monooxygenase, Eamonn P. Culligan, Roy D. Sleator, Julian R. Marchesi, Colin Hill
Metagenomic Identification Of A Novel Salt Tolerance Gene From The Human Gut Microbiome Which Encodes A Membrane Protein With Homology To A Brp/Blh-Family Beta-Carotene 15,15'-Monooxygenase, Eamonn P. Culligan, Roy D. Sleator, Julian R. Marchesi, Colin Hill
Department of Biological Sciences Publications
The human gut microbiome consists of at least 3 million non-redundant genes, 150 times that of the core human genome. Herein, we report the identification and characterisation of a novel stress tolerance gene from the human gut metagenome. The locus, assigned brpA, encodes a membrane protein with homology to a brp/blh-family β-carotene monooxygenase. Cloning and heterologous expression of brpA in Escherichia coli confers a significant salt tolerance phenotype. Furthermore, when cultured in the presence of exogenous β-carotene, cell pellets adopt a red/orange pigmentation indicating the incorporation of carotenoids in the cell membrane.
A Magnetic Compass Aids Monarch Butterfly Migration, Robert Gegear, Patrick Guerra, Steven Reppert
A Magnetic Compass Aids Monarch Butterfly Migration, Robert Gegear, Patrick Guerra, Steven Reppert
Robert J. Gegear
Convincing evidence that migrant monarch butterflies (Danaus plexippus) use a magnetic compass to aid their fall migration has been lacking from the spectacular navigational capabilities of this species. Here we use flight simulator studies to show that migrants indeed possess an inclination magnetic compass to help direct their flight equatorward in the fall. The use of this inclination compass is light-dependent utilizing ultraviolet-A/blue light between 380 and 420 nm. Notably, the significance of light <420 nm for inclination compass function was not considered in previous monarch studies. The antennae are important for the inclination compass because they appear to contain light-sensitive magnetosensors. For migratory monarchs, the inclination compass may serve as an important orientation mechanism when directional daylight cues are unavailable and may also augment time-compensated sun compass orientation for appropriate directionality throughout the migration.
Water Water Everywhere: Analyzing Long Island's Water Issues And Finding Solutions For A Sustainable Future, Anthony T. Becker
Water Water Everywhere: Analyzing Long Island's Water Issues And Finding Solutions For A Sustainable Future, Anthony T. Becker
2014 Student Theses
Over three million people call Long Island their home. With access to beautiful landscapes, world-renowned beaches, and proximity to New York City, it is no wonder that so many proudly call this geographic stretch of glacial till their home. However, throughout the years our actions do not necessarily reflect this affection we have to our home. Years of sprawl and human infestation across the island have resulted in widespread environmental degradation. Specifically, the water we drink and the beaches we enjoy have become endangered. I plan on studying the urban ecology of how intensified population growth led to the eutrophication …
Differential Expression Of Cyclin G2, Cyclin Dependent Kinase Inhibitor 2c And Peripheral Myelin Protein 22 Genes During Adipogenesis..Pdf, Jibin Zhang, Yeunsu Suh, Young Min Choi, Jinsoo Ahn, Michael E. Davis, Kichoon Lee
Differential Expression Of Cyclin G2, Cyclin Dependent Kinase Inhibitor 2c And Peripheral Myelin Protein 22 Genes During Adipogenesis..Pdf, Jibin Zhang, Yeunsu Suh, Young Min Choi, Jinsoo Ahn, Michael E. Davis, Kichoon Lee
Jibin Zhang
Hits-Clip And Integrative Modeling Define The Rbfox Splicing-Regulatory Network Linked To Brain Development And Autism, Natalie Farny, Sebastien Weyn-Vanhentenryck, Aldo Mele, Qinghong Yan, Shuying Sun, Zuo Zhang, Chenghai Xue, Margaret Herre, Pamela Silver, Michael Zhang, Adrian Krainer, Robert Darnell, Chaolin Zhang
Hits-Clip And Integrative Modeling Define The Rbfox Splicing-Regulatory Network Linked To Brain Development And Autism, Natalie Farny, Sebastien Weyn-Vanhentenryck, Aldo Mele, Qinghong Yan, Shuying Sun, Zuo Zhang, Chenghai Xue, Margaret Herre, Pamela Silver, Michael Zhang, Adrian Krainer, Robert Darnell, Chaolin Zhang
Natalie G. Farny
The RNA binding proteins Rbfox1/2/3 regulate alternative splicing in the nervous system, and disruption of Rbfox1 has been implicated in autism. However, comprehensive identification of functional Rbfox targets has been challenging. Here, we perform HITS-CLIP for all three Rbfox family members in order to globally map, at a single-nucleotide resolution, their in vivo RNA interaction sites in the mouse brain. We find that the two guanines in the Rbfox binding motif UGCAUG are critical for protein-RNA interactions and crosslinking. Using integrative modeling, these interaction sites, combined with additional datasets, define 1,059 direct Rbfox target alternative splicing events. Over half of …
Using Progesterone As An Indicator Of Ovarian Response To Stimulation In Cattle, Kayla Mariah Kauffman
Using Progesterone As An Indicator Of Ovarian Response To Stimulation In Cattle, Kayla Mariah Kauffman
Animal Science
No abstract provided.
Chip-Seq And Rna-Seq Reveal An Amrz-Mediated Mechanism For Cyclic Di-Gmp Synthesis And Biofilm Development By Pseudomonas Aeruginosa, Christopher J. Jones, David Newsom, Benjamin Kelly, Yasuhiko Irie, Laura K. Jennings, Binjie Xu, Dominique H. Limoli, Joe J. Harrison, Matthew R. Parsek, Peter White, Daniel J. Wozniak
Chip-Seq And Rna-Seq Reveal An Amrz-Mediated Mechanism For Cyclic Di-Gmp Synthesis And Biofilm Development By Pseudomonas Aeruginosa, Christopher J. Jones, David Newsom, Benjamin Kelly, Yasuhiko Irie, Laura K. Jennings, Binjie Xu, Dominique H. Limoli, Joe J. Harrison, Matthew R. Parsek, Peter White, Daniel J. Wozniak
Biology Faculty Publications
The transcription factor AmrZ regulates genes important for P. aeruginosa virulence, including type IV pili, extracellular polysaccharides, and the flagellum; however, the global effect of AmrZ on gene expression remains unknown, and therefore, AmrZ may directly regulate many additional genes that are crucial for infection. Compared to the wild type strain, a ΔamrZ mutant exhibits a rugose colony phenotype, which is commonly observed in variants that accumulate the intracellular second messenger cyclic diguanylate (c-di-GMP). Cyclic di-GMP is produced by diguanylate cyclases (DGC) and degraded by phosphodiesterases (PDE). We hypothesized that AmrZ limits the intracellular accumulation of c-di-GMP through transcriptional repression …
Time Series Data For 3b Image Processing, George Mcnamara
Time Series Data For 3b Image Processing, George Mcnamara
George McNamara
Time series data for 3B image processing
Four time series data sets of Stellaris single molecules RNA FISH (fluorescence in situ hybridization). All four datasets are 301 imaqe planes. FISH probes are to TOP1 mRNA (Topoisomerase I)in Saos osterosarcoma cells.
One dataset is 10 millisecond exposures (very dim), acquired in Streaming acquisition mode (no hardware overhead).
The other three datasets are a three consecutive planes of the same XY field of view.
I have included image processing results for:
PiMP - a fast method developed by Sebastian Munck et al 2012, http://www.ncbi.nlm.nih.gov/pubmed/?term=22357945
and greatly improved performance by Glen Macdonald (Seattle). …
A Comprehensive Microrna Expression Profile Of The Backfat Tissue From Castrated And Intact Full-Sib Pair Male Pigs.Pdf, Ying Bai, Jinming Huang, Gang Liu, Jibin Zhang, Jianying Wang, Chengkun Liu, Meiying Fang
A Comprehensive Microrna Expression Profile Of The Backfat Tissue From Castrated And Intact Full-Sib Pair Male Pigs.Pdf, Ying Bai, Jinming Huang, Gang Liu, Jibin Zhang, Jianying Wang, Chengkun Liu, Meiying Fang
Jibin Zhang
Effect Of Origanum Chemotypes On Broiler Intestinal Bacteria, Liliana Betancourt, Fernando Rodriguez, Vienvilay Phandanouvong, Claudia Ariza-Nieto, Michael Hume, David Nisbet, German Afanador-Tellez, Alexandra Martynova-Van Kley, Armen Nalian
Effect Of Origanum Chemotypes On Broiler Intestinal Bacteria, Liliana Betancourt, Fernando Rodriguez, Vienvilay Phandanouvong, Claudia Ariza-Nieto, Michael Hume, David Nisbet, German Afanador-Tellez, Alexandra Martynova-Van Kley, Armen Nalian
Faculty Publications
Essential oils have been proposed as alternatives to antibiotic use in food animal production. This study evaluated 3 chemotypes of the Origanum genus, containing varying amounts of secondary metabolites carvacrol, thymol, and sabinene, in the broiler chicken diet. Aerial parts of Origanum vulgare L. (OL), O. vulgare L. ssp. hirtum (OH), and O. majorana (OM) were collected from a greenhouse located in the high altitude Sabana de Bogotá (Savanna of Bogotá) and O. vulgare L. ssp. hirtum (OG) produced and ground in Greece. Oregano essential oils (OEO) from these plants were obtained by steam distillation and analyzed by gas chromatography …
Systematic Screen Of Chemotherapeutics In Drosophila Stem Cell Tumors, Michele Markstein, Samantha Detorree, Julio Cho, Ralph Neumüller, Soren Craig-Müller, Norbert Perrimon
Systematic Screen Of Chemotherapeutics In Drosophila Stem Cell Tumors, Michele Markstein, Samantha Detorree, Julio Cho, Ralph Neumüller, Soren Craig-Müller, Norbert Perrimon
Michele Markstein
Here we report the development of an in vivo system to study the interaction of stem cells with drugs using a tumor model in the adult Drosophila intestine. Strikingly, we find that some Food and Drug Administration-approved chemotherapeutics that can inhibit the growth of Drosophila tumor stem cells can paradoxically promote the hyperproliferation of their wild-type counterparts. These results reveal an unanticipated side effect on stem cells that may contribute to tumor recurrence. We propose that the same side effect may occur in humans based on our finding that it is driven in Drosophila by the evolutionarily conserved Janus kinase-signal …