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Articles 1 - 18 of 18
Full-Text Articles in Physical Sciences and Mathematics
Synthesis Of New Platinum-Based Anti-Cancer Drugs, Saud O. Albaroodi Yasser
Synthesis Of New Platinum-Based Anti-Cancer Drugs, Saud O. Albaroodi Yasser
Masters Theses
Cancer is considered the second leading cause of death after heart attack. Different treatments have been applied to kill cancer cells such as chemotherapy, which is the use of chemicals or drugs in order to treat cancer cells. Platinum-based anti cancer drugs are the backbone of chemotherapy, they play a crucial role in treating various malignant tumor. However, the disadvantages of these drugs are very painful on patients, such as nephrotoxicity and ototoxicity. In the last four decades, thousands of platinum-based anticancer drugs have been synthesized for hope in find a new drug with higher efficacy and less side effects.In …
Autophagy-Mediated Mechanisms Of Chemoresistance In Cancer, David Broadbent, Dr. Joshua Andersen
Autophagy-Mediated Mechanisms Of Chemoresistance In Cancer, David Broadbent, Dr. Joshua Andersen
Journal of Undergraduate Research
The resistance of tumor cells to chemotherapy is a critical problem in the clinic and is a common cause of mortality in cancer. Emerging data suggests that resistance to chemotherapy is caused by a tumor-expressed protein called 14-3-3ζ, yet the mechanism to explain 14-3-3ζ-mediated chemoresistance is not completely understood (1). Rapid growing tumors often outgrow their blood supply resulting in regions of hypoxia (low glucose and oxygen). These cells must adapt or die and those that do adapt often become metastatic and chemoresistant. A recently proposed mechanism by which cancer cells are able to adapt to hypoxia is via autophagy, …
Biochemical And Structural Characterization Of The Core Subunits Of Gpi Transamidase, Dilani G. Gamage
Biochemical And Structural Characterization Of The Core Subunits Of Gpi Transamidase, Dilani G. Gamage
Wayne State University Dissertations
BIOCHEMICAL AND STRUCTURAL CHARACTERIZATION OF THE CORE SUBUNITS OF GPI TRANSAMIDASE
by
DILANI G GAMAGE
May 2015
Advisor: Prof. Tamara L. Hendrickson
Major: Chemistry (Biochemistry)
Degree: Doctor of Philosophy
Glycosylphosphatidylinositol transamidase (GPI-T) is a complicated, membrane-bound, multi-subunit enzyme that catalyzes an essential post-translational modification. This enzyme attaches GPI anchors to the C-termini of various proteins that contain a proper GPI-T signal sequence. Gpi8, Gaa1, Gpi16, Gpi17 and Gab1 are the five known subunits that may encompass the fungal GPI-T; Gpi8 is the catalytic subunit, but the functions of the other subunits remain essentially unknown. In humans, different GPI-T subunits are …
Biological Evaluation Of The Vaccine Candidate Tf-Ps A1 And A One-Pot Multicomponent Coupling/Cyclization For Natural Product Herbicide (±)-Thaxtomin A, Jean Paul Bourgault
Biological Evaluation Of The Vaccine Candidate Tf-Ps A1 And A One-Pot Multicomponent Coupling/Cyclization For Natural Product Herbicide (±)-Thaxtomin A, Jean Paul Bourgault
Wayne State University Dissertations
ABSTRACT
BIOLOGICAL EVALUATION OF THE VACCINE CANDIDATE TF-PS A1 AND A ONE-POT MULTICOMPONENT COUPLING/CYCLIZATION FOR NATURAL PRODUCT HERBICIDE (±)-THAXTOMIN A
By
JEAN PAUL BOURGAULT
August 2015
Advisor: Prof. Peter R. Andreana
Major: Chemistry (Organic)
Degree: Doctor of Philosophy
The -aminooxy derivative of the Thomsen–Friedenreich tumor associated carbohydrate antigen has been synthesized in 11 steps utilizing a D-GalN3 acceptor carrying a pre-installed -N-hydroxysuccinimidyl moiety. The natural linkage was prepared in high selectivity employing a suitably protected D-GalN3-thioglycoside donor with N-hydroxysuccinimide. With access to -TF-ONH2, the preparation of the TF-PS A1 vaccine candidate ensued smoothly through oxime bond formation. This construct …
Stimulus-Dependent Differences In Signalling Regulate Epithelial-Mesenchymal Plasticity And Change The Effects Of Drugs In Breast Cancer Cell Lines, Joseph Cursons, Karl-Johan Leuchowius, Mark Waltham, Eva Tomaskovic-Crook, Momeneh Foroutan, Cameron P. Bracken, Andrew Redfern, Edmund J. Crampin, Ian Street, Melissa J. Davis, Erik W. Thompson
Stimulus-Dependent Differences In Signalling Regulate Epithelial-Mesenchymal Plasticity And Change The Effects Of Drugs In Breast Cancer Cell Lines, Joseph Cursons, Karl-Johan Leuchowius, Mark Waltham, Eva Tomaskovic-Crook, Momeneh Foroutan, Cameron P. Bracken, Andrew Redfern, Edmund J. Crampin, Ian Street, Melissa J. Davis, Erik W. Thompson
Australian Institute for Innovative Materials - Papers
Introduction: The normal process of epithelial mesenchymal transition (EMT) is subverted by carcinoma cells to facilitate metastatic spread. Cancer cells rarely undergo a full conversion to the mesenchymal phenotype, and instead adopt positions along the epithelial-mesenchymal axis, a propensity we refer to as epithelial mesenchymal plasticity (EMP). EMP is associated with increased risk of metastasis in breast cancer and consequent poor prognosis. Drivers towards the mesenchymal state in malignant cells include growth factor stimulation or exposure to hypoxic conditions.
Methods: We have examined EMP in two cell line models of breast cancer: the PMC42 system (PMC42-ET and PMC42-LA …
Evaluation Of The Effects Of A Plasma Activated Medium On Cancer Cells, S. Mohades, M. Laroussi, J. Sears, N. Barekzi, H. Razavi
Evaluation Of The Effects Of A Plasma Activated Medium On Cancer Cells, S. Mohades, M. Laroussi, J. Sears, N. Barekzi, H. Razavi
Electrical & Computer Engineering Faculty Publications
The interaction of low temperature plasma with liquids is a relevant topic of study to the field of plasma medicine. This is because cells and tissues are normally surrounded or covered by biological fluids. Therefore, the chemistry induced by the plasma in the aqueous state becomes crucial and usually dictates the biological outcomes. This process became even more important after the discovery that plasma activated media can be useful in killing various cancer cell lines. Here, we report on the measurements of concentrations of hydrogen peroxide, a species known to have strong biological effects, produced by application of plasma to …
Killing Adherent And Nonadherent Cancer Cells With The Plasma Pencil, Mounir Laroussi, Soheila Mohades, Nazir Barekzi
Killing Adherent And Nonadherent Cancer Cells With The Plasma Pencil, Mounir Laroussi, Soheila Mohades, Nazir Barekzi
Electrical & Computer Engineering Faculty Publications
The application of low temperature plasmas in biology and medicine may lead to a paradigm shift in the way various diseases can be treated without serious side effects. Low temperature plasmas generated in gas mixtures that contain oxygen or air produce several chemically reactive species that have important biological implications when they interact with eukaryotic or prokaryotic cells. Here, a review of the effects of low temperature plasma generated by the plasma pencil on different cancerous cells is presented. Results indicate that plasma consistently shows a delayed killing effect that is dose dependent. In addition, there is some evidence that …
Synthesis And Characterization Of Imidazolium Salt Derivatives For Anti-Tumor Activity, Ryan W. Pearce
Synthesis And Characterization Of Imidazolium Salt Derivatives For Anti-Tumor Activity, Ryan W. Pearce
Williams Honors College, Honors Research Projects
Several aldehydes (butanal, pentanal, hexanal, 4-hydroxybenzaldehyde) were reacted with 1,3-bis(naphthalen-2-ylmethyl)-imidazolium bromide (1) to produce novel C2 substituted imidazolium salts for the potential use against non-small cell lung cancer in humans. Compounds 2-(1-hydroxypentyl)-1,3-bis(naphthalen-2-ylmethyl)-imidazolium bromide (3) and 2-(1-hydroxyhexyl)-1,3-bis(naphthalen-2-ylmethyl)-imidazolium bromide (5) were successfully synthesized with structures supported by NMR and mass spectrometry. Characterization by 1H NMR showed evidence of 1 in both compounds. The tumor cell growth inhibition of 3 against non-small cell lung cancer lines NCI-A549, NCI-H460, HCC827, and NCI-H1975 was tested and found to be comparable to cisplatin as measured by MTT assay. …
Interesting Properties Of P-, D-, And F-Block Elements When Coordinated With Dipicolinic Acid And Its Derivatives As Ligands: Their Use As Inorganic Pharmaceuticals, Michael J. Celestine, Jimmie L. Bullock, Shivani Boodram, Varma H. Rambaran, Alvin A. Holder
Interesting Properties Of P-, D-, And F-Block Elements When Coordinated With Dipicolinic Acid And Its Derivatives As Ligands: Their Use As Inorganic Pharmaceuticals, Michael J. Celestine, Jimmie L. Bullock, Shivani Boodram, Varma H. Rambaran, Alvin A. Holder
Chemistry & Biochemistry Faculty Publications
This is a review of the literature concerning the interesting properties of p-, d-, and f-block elements when coordinated with 2,6-pyridinedicarboxylic acid (dipicolinic acid, H2dipic) and its derivatives as ligands, with a focus on their use as inorganic pharmaceuticals. Some of the complexes reported were used as insulin-like, bioimaging contrasting agents, antimicrobial agents, and anticancer agents.
Potential Antineoplastic Structural Variations Of Uracil Mustard (Uramustine) Retaining Cytotoxic Activity And Drug-Likeness Suitable For Oral Administration, Ronald Bartzatt
Chemistry Faculty Publications
Aims: To present 12 new variants of uracil mustard having drug-like properties and cytotoxic functional group, by utilizing uracil mustard (uramustine) as a lead compound. Utilize rigorous substructure and similarity of a molecular scaffold to determine drug like variants. Physicochemical properties determined indicate the variants have favorable drug-likeness.
Study Design: Conduct molecular database search utilizing features of substructure and similarity based upon uracil mustard. Place and Duration of Study: Department of Chemistry, Medicinal Chemistry Study Section, University of Nebraska at Omaha, Omaha Nebraska between January 2015 to March 2015.
Methodology: Uracil mustard consists of the pyrimidine derivative uracil, …
Measuring The Alkylation Kinetics And Drug Likeness Of Four Candidate Antineoplastic Compounds, Ronald Bartzatt
Measuring The Alkylation Kinetics And Drug Likeness Of Four Candidate Antineoplastic Compounds, Ronald Bartzatt
Chemistry Faculty Publications
Aims: To synthesize small molecule alkylating compounds and analyze the kinetics of the alkylation in aqueous solution. Determine molecular properties and the drug likeness of these four compounds as potential antineoplastic agents and apply statistical analysis to identify interrelationships of properties.
Study Design: Four compounds were synthesized, characterized, and studied for alkylation capability. The alkylation kinetics were elucidated, as well as drug likeness properties. The interrelationships of properties were examined by statistical methodology.
Place and Duration of Study: Department of Chemistry, Durham Science Center, University of Nebraska at Omaha, Omaha NE, from May 2015 to June 2015.
Methodology: Four compounds …
Developing A Weibull Model Extension To Estimate Cancer Latency Times, Diana L. Nadler
Developing A Weibull Model Extension To Estimate Cancer Latency Times, Diana L. Nadler
Legacy Theses & Dissertations (2009 - 2024)
More than one-third of all Americans will be diagnosed with cancer sometime in their lives. Though their illness may be invisible now, it presents a great, and largely unexamined, opportunity to find and treat their cancers early. Early detection represents one of the most promising approaches to reduce the growing cancer burden by identifying cancer while it is localized and curable, preventing not only mortality, but also reducing morbidity and costs.
Curcumin: A Folklore Remedy From Kitchen On The Way To Clinic As Cancer Drug, Debasish Bandyopadhyay
Curcumin: A Folklore Remedy From Kitchen On The Way To Clinic As Cancer Drug, Debasish Bandyopadhyay
Chemistry Faculty Publications and Presentations
Numerous compounds are widely distributed in nature and many of these possess medicinal/biological/pharmacological activity. Curcumin, a polyphenol derived from the rhizomes (underground stems) of Curcuma longa Linn (a member of the ginger family, commonly known as turmeric) is a culinary spice and therapeutic used in India for thousands of years to induce color and flavor in food as well as to treat a wide array of diseases. The origin of turmeric as spice and folklore medicine is so old that it is lost in legend. Curcumin has many beneficial pharmacological effects which includes, but are not limited with, antimicrobial, anti-inflammatory, …
Synthesis And Anti-Proliferative Activity Of N,N’-Bis(Arylmethyl)Benzimidazolium Salts, Travis M. Williams
Synthesis And Anti-Proliferative Activity Of N,N’-Bis(Arylmethyl)Benzimidazolium Salts, Travis M. Williams
Williams Honors College, Honors Research Projects
A series of N,N’-bis(arylmethyl)benzimidazolium salts with hydrophilic and lipophilic substituents have been synthesized, characterized, and tested against select non-small cell cancer cell lines. Substituent variations on the imidazole ring have shown that lipophilicity and hydrophilicity can influence the imidazolium salts’ anti-proliferative activity and aqueous solubility.
Statistical Modeling Of Microrna Expression With Human Cancers, Ke-Sheng Wang, Yue Pan, Chun Xu
Statistical Modeling Of Microrna Expression With Human Cancers, Ke-Sheng Wang, Yue Pan, Chun Xu
Health & Biomedical Sciences Faculty Publications and Presentations
MicroRNAs (miRNAs) are small non-coding RNAs (containing about 22 nucleotides) that regulate gene expression. MiRNAs are involved in many different biological processes such as cell proliferation, differentiation, apoptosis, fat metabolism, and human cancer genes; while miRNAs may function as candidates for diagnostic and prognostic biomarkers and predictors of drug response. This paper emphasizes the statistical methods in the analysis of the associations of miRNA gene expression with human cancers and related clinical phenotypes: 1) simple statistical methods include chi-square test, correlation analysis, t-test and one-way ANOVA; 2) regression models include linear and logistic regression; 3) survival analysis approaches such as …
Synthesis, Surface Functionalization, And Biological Testing Of Iron Oxide Nanoparticles For Development As A Cancer Therapeutic, Stanley E. Gilliland Iii
Synthesis, Surface Functionalization, And Biological Testing Of Iron Oxide Nanoparticles For Development As A Cancer Therapeutic, Stanley E. Gilliland Iii
Theses and Dissertations
Iron oxide nanoparticles are highly researched for their use in biomedical applications such as drug delivery, diagnosis, and therapy. The inherent biodegradable and biocompatible nanoparticle properties make them highly advantageous in nanomedicine. The magnetic properties of iron oxide nanoparticles make them promising candidates for magnetic fluid hyperthermia applications. Designing an efficient iron oxide nanoparticle for hyperthermia requires synthetic, surface functionalization, stability, and biological investigations. This research focused on the following three areas: optimizing synthesis conditions for maximum radiofrequency induced magnetic hyperthermia, designing a simple and modifiable surface functionalization method for specific or broad biological stability, and in vitro and in …
Light Controlled Drug Activation And Release, Jonathon Sheldon
Light Controlled Drug Activation And Release, Jonathon Sheldon
Theses and Dissertations
Cancer constitutes a terrible burden on modern society. In the United States there are an estimated 1,658,370 new cancer diagnoses resulting in 589,430 deaths in 2015 alone.[1] An estimated 41,170 of these cases will be diagnosed right here in Virginia. With new cancer patients comes the expanding demand for new treatments. As we all know, many modern chemotherapeutics cause adverse reactions to patients. This is because the toxic nature of these therapies often affects normal tissue alongside the tumors that are infesting the body. Therefore, researching novel ways to make chemotherapeutics selective for cancer, while leaving healthy tissue unscathed, …
Plasma Processes And Cancer - Special Topical Cluster Of The 2nd Iwpct Meeting, Masaru Hori, Mounir Laroussi, Kai Masur, Yuzuru Ikehara
Plasma Processes And Cancer - Special Topical Cluster Of The 2nd Iwpct Meeting, Masaru Hori, Mounir Laroussi, Kai Masur, Yuzuru Ikehara
Electrical & Computer Engineering Faculty Publications
(First paragraph) Although the emerging multidisciplinary field of plasma medicine has been around for nearly two decades important advances have already taken place that could one day revolutionize healthcare and the way various challenging diseases can be treated.1-3Amongst these advances the effects of low temperature plasma (LTP) on cancer cells in vitro and in vivo stand out.4-13Current cancer treatment modalities, such as chemotherapy and radiation therapy, have serious side effects and tend to lose their benefits to the patients after a while. Therefore, novel and improved therapies that can be used alone …