The Influence Of Flow Mechanotransduction On Endothelial Cells In The Lymphatic Valve Sinus, 2022 University of Massachusetts Amherst
The Influence Of Flow Mechanotransduction On Endothelial Cells In The Lymphatic Valve Sinus, Joshua Daniel Hall
Fluid flow in the cardiovascular and lymphatic systems influences the phenotype of endothelial cells that line the interior to the vessel via mechanotransduction. Geometric features in a vessel such as curvature, bifurcation, and valves promote heterogeneous fluid flow profiles, inducing a heterogeneous endothelial phenotype within a vessel region. Certain flow conditions are associated with vascular dysfunction, and diseases such as atherosclerosis preferentially develop in areas of flow disturbance. Lymphatic vessels are highly analogous to blood vessels, although lymphatic flow characteristics and its effect on lymphatic endothelial cells (LECs) via mechanotransduction have been comparatively less examined. The most significant geometric features ...
A Versatile Python Package For Simulating Dna Nanostructures With Oxdna, 2022 University of Arkansas, Fayetteville
A Versatile Python Package For Simulating Dna Nanostructures With Oxdna, Kira Threlfall
Computer Science and Computer Engineering Undergraduate Honors Theses
The ability to synthesize custom DNA molecules has led to the feasibility of DNA nanotechnology. Synthesis is time-consuming and expensive, so simulations of proposed DNA designs are necessary. Open-source simulators, such as oxDNA, are available but often difficult to configure and interface with. Packages such as oxdna-tile-binding pro- vide an interface for oxDNA which allows for the ability to create scripts that automate the configuration process. This project works to improve the scripts in oxdna-tile-binding to improve integration with job scheduling systems commonly used in high-performance computing environments, improve ease-of-use and consistency within the scripts compos- ing oxdna-tile-binding, and move ...
Isolation And Production Of Tandem Collagen Binding Domain From Clostridial Collagenase Colg And Developments In C1q Reagent Production For Future Molecule Characterization Work, 2022 University of Arkansas, Fayetteville
Isolation And Production Of Tandem Collagen Binding Domain From Clostridial Collagenase Colg And Developments In C1q Reagent Production For Future Molecule Characterization Work, Stephanie Beitle
Chemical Engineering Undergraduate Honors Theses
This thesis covers a two part project: the production methods to create a double collagen binding domain molecule with a growth factor for wound healing applications and the development of a new in-house production method for isolating C1q from bovine blood. The wound healing molecule was created using transformation, sonication, and purification before being tested via electrophoresis SDS page and Western blots to confirm the molecule’s presence. The C1q in-house production method utilizes an ultrafiltration flow cell rather than dialysis at a critical point in the process, allowing for researchers to not only be able to use a single ...
Drug-Facilitated Sexual Assault At The University Of Arkansas, 2022 University of Arkansas, Fayetteville
Drug-Facilitated Sexual Assault At The University Of Arkansas, Barrett Weidman
Chemical Engineering Undergraduate Honors Theses
This work was written to fulfill two main purposes. First, to help survivors of Drug-Facilitated Sexual Assault (DFSA) process their experience by compiling the toxicological, pharmacological, and distribution of the three most used date-rape drugs. Second, to gauge the knowledge and interest of University of Arkansas students regarding drug impairments, sexual assault education, and bystander intervention training. A survey was conducted for the latter and revealed that 91.6% of students believe the University’s existing sexual assault prevention education and bystander intervention training have room for improvement. Also, 37.1% of students who have received this education report that ...
Characterizing The Expression Pattern And Function Of Tartan During Drosophila Development, 2022 University of Arkansas, Fayetteville
Characterizing The Expression Pattern And Function Of Tartan During Drosophila Development, Alaina Baggett
Biomedical Engineering Undergraduate Honors Theses
The development of complex structures and organs by multicellular organisms relies on the ability of epithelial cells to self-organize. Epithelia are sheets of connected cells, and compartment boundaries are formed between certain epithelial cells to create distinct tissue compartments. Compartment boundaries are specialized cell-cell interfaces that are enriched for the cytoskeletal proteins actin and myosin, leading to straight cell edges under relatively high tension that act as fences keep cells from moving between compartments. In the model organism Drosophila melanogaster (fruit fly), compartment boundaries in the early embryo are established in response to the non-uniform striped expression of the cell-surface ...
Investigating The Impact Of Hypoxia On Reactive Oxygen Species Generation Within Murine Breast Cancer Cells, 2022 University of Arkansas, Fayetteville
Investigating The Impact Of Hypoxia On Reactive Oxygen Species Generation Within Murine Breast Cancer Cells, Jared Mcpeake
Biomedical Engineering Undergraduate Honors Theses
When cancer metastasizes from a primary tumor site to secondary site through the bloodstream or lymph, the cancer becomes more difficult to treat. For this reason, it is vital to study what indicates the metastatic potential of a tumor. Current research has shown that cell lines with high metastatic potential display increased levels of metabolic adaptability over their nonmetastatic counterparts after undergoing hypoxic conditions. One method of assessing this adaptability is to measure the concentration of reactive oxygen species (ROS) produced by the cells while undergoing oxidative stress. In highly adaptable metastatic cells, an increase of ROS buildup within the ...
Design Of A Four Channel Pulsatile Perfusion Bioreactor For Ex-Vivo Study Of Vascular Grafts, 2022 Clemson University
Design Of A Four Channel Pulsatile Perfusion Bioreactor For Ex-Vivo Study Of Vascular Grafts, Thomas M. Fair
Cardiovascular diseases are the leading cause of death in the United States. Atherosclerosis in peripheral arteries is a major contributing factor. Autologous saphenous vein grafts are the most common bypass grafts for treating peripheral artery diseases. A quarter of these grafts fail within a year, and around half have failed within 10 years of the initial surgery. Graft failure is attributed to the development of intimal hyperplasia indicated by the migration and proliferation of vascular smooth muscle cells, fibroblasts, and the deposition of extracellular proteins.
Increases in flow, pressure, the pulse frequency, and the differential of pressure that model an ...
Interactions Between Soft Nanoparticles And Mammalian Cells, 2022 University of Tennessee, Knoxville
Interactions Between Soft Nanoparticles And Mammalian Cells, Mitchell Raith
Nanoparticles have been of interest to the pharmaceutical industry since the 1980s. The first FDA approved nanoparticle-based therapies included liposomal anesthesia agents. Since then, the amount of FDA-approved nanoparticle therapies remains low. This is because nanoparticle-patient interactions can be very complex and are not well understood. Complicating factors also include increasing obesity rates among the patient population and many small animal pre-clinical trials are completed with healthy, lean animals. The biochemical differences between lean and obese patients prevents early studies from accurately predicting nanoparticle clinical behaviors. Many nanoparticles fail in trails. In this thesis, I aimed to uncover how nanoparticles ...
Nonviral Approaches For Delivery Of Crispr-Cas9 Into Hepatocytes For Treatment Of Inherited Metabolic Disease, Tanner R. Rathbone
Inherited metabolic diseases (IMDs) of the liver have a collective occurrence of about 1 in 800 births. Current therapies for IMDs of the liver are limited, and the only curative option for patients is orthotopic liver transplantation. Due to shortages of organ donors, immunosuppression following the transplantation, and mortality risks associated with the procedure, alternative treatment options are necessary for curing IMDs of the liver. Therapeutic gene editing has been proposed as a potential strategy for treating IMDs of the liver. Adeno-associated viral vectors (AAVs) are the most widely used delivery method for liver-targeted gene therapies. Although widely used for ...
Characterization Of Fundamental Parameters That Modulate Acoustofluidic-Mediated Molecular Delivery To Cells., 2022 University of Louisville
Characterization Of Fundamental Parameters That Modulate Acoustofluidic-Mediated Molecular Delivery To Cells., Connor Sterling Centner
Electronic Theses and Dissertations
Cell-based therapies represent the latest biotechnological revolution in medicine, but significant limitations exist in non-viral intracellular delivery techniques during manufacturing of cell therapies. To address these limitations, a novel acoustofluidic device was developed to deliver ultrasound waves into a flow chamber for rapid molecular delivery to human cells. Our acoustofluidic device delivers biomolecules by inducing expansion and collapse of exogenous gas-filled microbubbles (“cavitation”), which enhances molecular delivery to nearby cells. Experimental studies were conducted to characterize key parameters that influence acoustofluidic-mediated molecular delivery to human cells. A clinical ultrasound transducer was generally utilized with varying cationic microbubble concentrations. Intracellular delivery ...
Europium-Doped Cerium Oxide Nanoparticles For Microglial Aβ Clearance And Homeostasis, 2022 University of Nebraska Medical Center
Europium-Doped Cerium Oxide Nanoparticles For Microglial Aβ Clearance And Homeostasis, Jatin Machhi, Pravin Yeapuri, Milica Markovic, Milankumar Patel, Wenhui Yan, Yaman Lu, Jacob D. Cohen, Mahmudul Hasan, Mai Mohamed Abdelmoaty, You Zhou, Huangui Xiong, Xinglong Wang, R. Lee Mosley, Howard E. Gendelman, Bhavesh D. Kevadiya
Papers from the Nebraska Center for Biotechnology
Alzheimer’s disease (AD) is the most common neurodegenerative disorder. Pathologically, it is characterized by the deposition of amyloid beta (Aβ) plaques and presence of neurofibrillary tangles. These drive microglia neuroinflammation and consequent neurodegeneration. While the means to affect Aβ plaque accumulation was achieved how it affects disease outcomes remains uncertain. Cerium oxide (CeO2) reduces Aβ plaques, oxidative stress, inflammation, and Alzheimer’s disease (AD) signs and symptoms. Specifically, CeO2 nanoparticles (CeO2NPs) induces free radical scavenging and cell protective intracellular signaling. This can ameliorate the pathobiology of an AD-affected brain. In order to investigate, CeO2 ...
The Tin Man Needs A Heart: A Proposed Framework For The Regulation Of Bioprinted Organs, 2022 Fordham University School of Law
The Tin Man Needs A Heart: A Proposed Framework For The Regulation Of Bioprinted Organs, Linda Foit
Fordham Law Review
Each day, seventeen people die in the United States while waiting for an organ transplant. At least part of this need could be met by bioprinting, a technology that allows the on-demand production of custom-sized organs from a patient’s own cells. The field of bioprinting is progressing rapidly: the first bioprinted organs have already entered the clinic. Yet, developers of bioprinted organs face significant uncertainty as to how their potentially lifesaving products will be regulated—and by which government agency. Such regulatory uncertainty has the potential to decrease investment and stifle innovation in this promising technological field. This Note ...
Characterizing Mechanical Regulation Of Bone Metastatic Breast Cancer Cells, 2022 University of Massachusetts Amherst
Characterizing Mechanical Regulation Of Bone Metastatic Breast Cancer Cells, Boyuan Liu
Breast cancer most frequently metastasizes to the skeleton. Bone metastatic cancer is incurable and induces wide-spread bone osteolysis, resulting in significant patient morbidity and mortality. Mechanical stimuli in the skeleton are an important microenvironmental parameter that modulates tumor formation, osteolysis, and tumor cell-bone cell signaling, but which mechanical signals are the most beneficial and the corresponding molecular mechanisms are unknown. This work focused on bone matrix deformation and interstitial fluid flow based on their well-known roles in bone remodeling and in primary breast cancer. The goal of our research was to establish a platform that could define the relationship between ...
Controlled Codelivery Of Mir-26a And Antagomir-133a With Osteoconductive Scaffolds To Promote Healing Of Large Bone Defects, 2022 University of Massachusetts Amherst
Controlled Codelivery Of Mir-26a And Antagomir-133a With Osteoconductive Scaffolds To Promote Healing Of Large Bone Defects, Cole J. Ferreira
Often caused by trauma or tumor removal, large bone defects frequently result in delayed or non-union. The current gold standard for treatment is autograft. However, due to limitations, such as the size and location of the defect, these cannot always be utilized. A common alternative to autograft is the use of BMP-2 with a collagen scaffold, however, this treatment is limited by numerous side effects. In recent years, genetic materials such as microRNAs (miRNAs) have offered possible alternative therapies. MiRNAs are small non-coding RNA molecules that generally range from 20-24 nucleotides, serve as repressors of gene expression, and are involved ...
Bone And Cartilage Compression Simulator, 2022 California Polytechnic State University, San Luis Obispo
Bone And Cartilage Compression Simulator, Karoline M. Wucherer, Benjamin A. Parmentier, Thomasina E. Hinkle
A device was developed that delivers mechanical loads to bone and soft tissue samples under physiological conditions to aid in the research of tissue engineering bone and cartilage. To begin the design process, a Network Diagram and Gantt Chart were produced to create a general timeline for the project to follow. This allowed us to measure our progress and determine what effects (if any) delays could have on our project.
3d Bioprinting And Implantation Of Mouse Mammary Epithelial Structures Using A Custom Accessible 3d Bioprinting Platform, 2022 Old Dominion University
3d Bioprinting And Implantation Of Mouse Mammary Epithelial Structures Using A Custom Accessible 3d Bioprinting Platform, Xavier-Lewis Palmer, Saad Jafri, Patrick C. Sachs, Robert D. Bruno
College of Engineering & Technology (Batten) Posters
Prior work has shown that our bioprinting system can reliably produce human mammary organoids and tumoroids with high precision. However, this was not previously applied to mouse models, which are also important with respect to translational research in cancer drug development. To address this, we have produced protocols for the development of in vitro structures from murine mammary epithelial and tumor cells. Additionally, we assessed the translatability of both human and murine bioprinted organoids into mouse mammary fat pads over a period of 6 weeks. Our lab found that our produced organoids are reliable, they can survive in vivo, and ...
3d Bioprinted Structures From Cells Of Non-Epithelial Mesodermal And Endodermal Lineage Using A Custom Accessible 3d Bioprinting Platform, Xavier-Lewis Palmer, Annette Berkin, Patrick C. Sachs, Robert D. Bruno
College of Engineering & Technology (Batten) Posters
Prior work within our lab has demonstrated the ability to print both murine and human mammary organoids and tumoroids in vitro that can also be reliably transplanted into a murine host for translational studies. Peripherally, this bioprinting system has also been used for 3D printing neurons, stem cells, cancer cells, and a primary cell line rich with fibroblasts, but each of these efforts were with cells of ectodermal lineage. Thus, the system's capacity for use on cells of other origins had been untested. To address this, we have now developed protocols for cells of endodermal and non-epithelial mesodermal/mesenchymal ...
The Hitran2020 Molecular Spectroscopic Database, 2022 Old Dominion University
The Hitran2020 Molecular Spectroscopic Database, I. E. Gordon, L. S. Rothman, R. J. Hargreaves, R. Hashemi, E. V. Karlovets, F. M. Skinner, E. K. Conway, C. Hill, R. V. Kochanov, Y. Tan, P. Wcisło, A.A. Finenko, K. Nelson, P. F. Bernath, M. Birk, V. Boudon, A. Campargue, K. V. Chance, A. Coustenis, B. J. Drouin, J.-M. Flaud, R. R. Gamache, J. T. Hodges, D. Jacquemart, E. J. Mlawer, A. V. Nikitin, V.I. Perevalov, M. Rotger, J. Tennyson, G. C. Toon, H. Tran, V. G. Tyuterev, E. M. Adkins, A. Baker, A. Barbe, E. Canè, A. G. Császár, A. Dudaryonok, O. Egorov, A. J. Fleisher, H. Fleurbaey, A. Foltynowicz, T. Furtenbacher, J. J. Harrison, J.M. Hartmann, V.- M. Horneman, X. Huang, T. Karman, J. Karns, S. Kassi, I. Kleiner, V. Kofman, F. Kwabia-Tchana, N.N. Lavrentieva, T. J. Lee, D. A. Long, A. A. Lukashevskaya, O. M. Lyulin, V. Yu Makhnev, W. Matt, S. T. Massie, M. Melosso, S. N. Mikhailenko, D. Mondelain, H.S.P. Müller, O. V. Naumenko, A. Perrin, O. L. Polyansky, E. Raddaoui, P. L. Raston, Z. D. Reed, M. Rey, C. Richard, R. Tóbiás, I. Sadiek, D. W. Schwenke, E. Starikova, K. Sung, F. Tamassia, S. A. Tashkun, J. Vander Auwera, I.A. Vasilenko, A.A. Vigasin, G.L. Villanueva, B. Vispoel, G. Wagner, A. Yachmenev, S. N. Yurchenko
Chemistry & Biochemistry Faculty Publications
The HITRAN database is a compilation of molecular spectroscopic parameters. It was established in the early 1970s and is used by various computer codes to predict and simulate the transmission and emission of light in gaseous media (with an emphasis on terrestrial and planetary atmospheres). The HITRAN compilation is composed of five major components: the line-by-line spectroscopic parameters required for high-resolution radiative-transfer codes, experimental infrared absorption cross-sections (for molecules where it is not yet feasible for representation in a line-by-line form), collision-induced absorption data, aerosol indices of refraction, and general tables (including partition sums) that apply globally to the data ...
Exploring Cell Differentiation Vs. Localization In Engineered Ligament-To-Bone Entheses, 2022 Virginia Commonwealth University
Exploring Cell Differentiation Vs. Localization In Engineered Ligament-To-Bone Entheses, Saagar N. Sheth, Michael E. Brown, Jennifer L. Puetzer
Undergraduate Research Posters
The anterior cruciate ligament (ACL) connects to bone via structurally complex insertions known as entheses that translate load from elastic ligament and stiff bone via gradients in organization, composition, and cell phenotype . These gradients are not recreated in graft repair or engineered replacements, yielding limited repair options and high failure rates . Previously, we developed a culture system that uses a tensile-compressive interface to guide ligament fibroblasts to develop early postnatal-like entheses by 6 weeks ; however, cells used were isolated from the entirety of the neonatal bovine ACL from bone to bone and likely contained multiple cell phenotypes ...
Novel Microfabricated Systems To Elucidate The Role Of Anisotropic Stiffness In The Tumor Microenvironment, 2022 Virginia Commonwealth University
Novel Microfabricated Systems To Elucidate The Role Of Anisotropic Stiffness In The Tumor Microenvironment, Jiten Narang
Theses and Dissertations
Cancer is the second leading cause of death in women and late stage (metastatic) cancers have abysmal survival rates compared to early stage regional cases (27% vs 86%). As a tumor grows, the surrounding extracellular matrix (ECM) is reorganized into a dense, collagen rich matrix. The new matrix of aligned collagen fibers provides unique mechanical cues such as anisotropic stiffness and contact guidance. Matrix turnover also constricts local vasculature and restricts delivery of key nutrients and signaling molecules to malignant cells to outside the tumor creating a chemotactic gradient from outside to inside. In this work, we developed a novel ...