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Articles 1 - 6 of 6
Full-Text Articles in Biotechnology
Investigation Of Cell-Penetrating Peptide Transformation In Two Regenerable Tissue Culture Systems, Atiyyah S. Ferouz
Investigation Of Cell-Penetrating Peptide Transformation In Two Regenerable Tissue Culture Systems, Atiyyah S. Ferouz
Electronic Thesis and Dissertation Repository
The genetic engineering of plants allows for the modification of plant genomes, subsequently improving plant traits. There are, however, plants recalcitrant to established transformation methods, requiring the implementation of novel techniques. This study investigates the viability of cell-penetrating peptide (CPP) transformation using Tat2, a CPP with demonstrated transformation efficiency in plant and animal systems, in two regenerable tissue culture systems, soybean somatic embryos and Arabidopsis protoplasts. Assessments of complex formation, Tat2 cellular translocation, complex uptake, and CPP-mediated transformation were carried out. The results show the formation of a Tat2-plasmid complex and the uptake of Tat …
Application Of 3d Printing Technology In Porous Anode Fabrication For Enhanced Power Output Of Microbial Fuel Cells, Bin Bian
Electronic Thesis and Dissertation Repository
Microbial fuel cells (MFCs) are widely researched for application in wastewater treatment. However, the current anodes used in MFCs often suffer from high fabrication cost and uncontrollable pore sizes. In this thesis, three-dimensional printing technique was utilized to fabricate anodes with different micro pore sizes for MFCs. Copper coating and carbonization were applied to the printed polymer anodes to increase the conductivity and specific surface area. Voltages of MFCs with various anodes were measured as well as other electrochemical tests such as linear sweep voltammetry and electrochemical impedance spectroscopy. 3D copper porous anode produced higher maximum voltages and power densities …
A Plant-Made Vaccine Candidate To Protect Ruminants Against Shiga Toxin-Producing Escherichia Coli, Sean Miletic
A Plant-Made Vaccine Candidate To Protect Ruminants Against Shiga Toxin-Producing Escherichia Coli, Sean Miletic
Electronic Thesis and Dissertation Repository
Shiga toxin-producing Escherichia coli (STEC) are enteropathogens colonizing the digestive tracts of humans and animals worldwide. STEC are shed in the manure of cattle and frequently contaminate beef products, vegetables, and drinking water. Immunizing cattle herds against STEC is a promising strategy to reduce STEC colonization in cattle and therefore decrease contamination in the food supply. The goal of this project is to produce a plant-made vaccine to protect ruminants against STEC. Several recombinant proteins were designed as vaccine candidates and expressed transiently in Nicotiana benthamiana and transplastomically Nicotiana tabacum. One vaccine candidate, an E. coli secreted protein A (EspA) …
The Application Of The Ultrafine Technology In Improving The Biocompatibility And Osteo-Inductivity Of Dental Implants, Nicholas Y. Hou
The Application Of The Ultrafine Technology In Improving The Biocompatibility And Osteo-Inductivity Of Dental Implants, Nicholas Y. Hou
Electronic Thesis and Dissertation Repository
Dental implants are very effective medical devices. However, although stable, the conventional titanium implants are not very bioactive which in some instances could reduce their efficacy. This thesis described the research progress of using polymeric ultrafine-particles with bioactive additives to enrich the surface of titanium substrate, thereby increasing the biocompatibility and osteo-inductivity of the biomaterial. During this doctoral project, three different types of polymers were examined, initially the conventional polyester, and later the novel epoxy as well as the epoxy/polyester hybrid polymers. Physical characterizations confirmed that all of the coating powders were ultrafine particles, and homogeneous surfaces were constructed from …
Examining The Nucleotide Preference Of The Linker Domain In Engineered Tev-Mtalens, Brendon C. Mcdowell
Examining The Nucleotide Preference Of The Linker Domain In Engineered Tev-Mtalens, Brendon C. Mcdowell
Electronic Thesis and Dissertation Repository
Tev-mTALENs are genome-editing nucleases which combine the nuclease and linker domains of I-TevI with the DNA-binding domain of a TAL effector. The linker domain interacts with a portion of the Tev-mTALEN target site called the DNA Spacer, facilitating DNA cleavage. Linker-DNA Spacer interactions are poorly understood but necessary for Tev-mTALEN activity. I examined the DNA Spacer sequence requirements of the linker by assaying Tev-mTALEN activity on targets with mutated DNA Spacer sequences. I also performed activity assays using Tev-mTALENs with mutations to the I-TevI linker domain. My results indicate that the linker DNA Spacer sequence requirements are highly cryptic. No …
Translesion Synthesis And Mutations: On The Mutagenic Properties Of The Two Dna Lesions, 8-Oxo-G And Pt-Gg, And The Functions Of Y-Family Dna Polymerases And Rev3l On The Bypass Of Each Of The Dna Lesions In Mammalian Cells, Lizhen Guo
Electronic Thesis and Dissertation Repository
I studied the capabilities of the two DNA lesions 8-oxo-guanine and cisplatin intrastrand crosslinked 1,2-d(GpG) or Pt-GG to cause mutations in mammalian cells. Using isogenic cell lines generated from mice with selective gene knockouts of distinct DNA polymerases as models, I deduced the biological functions of the translesion DNA polymerases Pol eta, Pol kappa, Pol iota, Rev1 and Rev3L on bypassing each of the lesions 8-oxo-G and Pt-GG. My study takes advantage of the Next Generation Sequencing (NGS) technology to determine mutagenic effects of the DNA lesions in vivo and effects of translesion DNA polymerases on bypassing the lesions. Through …