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Articles 91 - 120 of 337

Full-Text Articles in Nanomedicine

Novel Therapy Targeting Mutant-Krasg12d And Galectin-1 In Pancreatic Cancer, Ana I. Martinez Bulnes, Nirnoy Dan, Poornima Devi Shaji, Swathi Holla, Murali M. Yallapu, Sheema Khan Oct 2023

Novel Therapy Targeting Mutant-Krasg12d And Galectin-1 In Pancreatic Cancer, Ana I. Martinez Bulnes, Nirnoy Dan, Poornima Devi Shaji, Swathi Holla, Murali M. Yallapu, Sheema Khan

Research Colloquium

Introduction: Although, surgical resection and chemotherapy are the gold standard for treating Pancreatic Ductal Adenocarcinoma (PDAC), low patient survival rate remains the problem. The activating point mutation of the KRAS on codon-12 is present in 70–95% of PDAC cases and so far, no success has been achieved to inhibit KRAS. KRASG12D regulates cell proliferation, differentiation, apoptosis. Recent preliminary and published studies show high Galectin-1 (Gal-1) levels in both pancreatic cancer and stromal cells, which modulate tumor microenvironment and metastasis. Additionally, genetic deletion of gal1 inhibits metastasis and improves survival in KRAS mouse model of PDAC (1). Therefore, our objective is …


Developing A Chlorophyll-Based Near-Infrared Fluorescent Probe For Cancer Cell Imaging, Benilde E. Adriano, Nycol M. Cotto, Neeraj Chauhan, Meena Jaggi, Subhash C. Chauhan, Murali M. Yallapu Oct 2023

Developing A Chlorophyll-Based Near-Infrared Fluorescent Probe For Cancer Cell Imaging, Benilde E. Adriano, Nycol M. Cotto, Neeraj Chauhan, Meena Jaggi, Subhash C. Chauhan, Murali M. Yallapu

Research Colloquium

Introduction: Near-Infrared (NIR) fluorescence-based imaging is a noteworthy and safer strategy for cancer cells/tissues imaging compared to radiological imaging. NIR fluorescence offers deep tissue penetration and have minimal obstruction by autofluorescence and photon scattering [1]. There are several NIR dyes including indocyanine green (ICG) [2] and IR-1061 [3] that allow high-resolution tissue imaging. However, these dyes possess some low-quality characteristics which limit their use, namely photo instability, toxicity, poor water solubility, and short half-lives [4]. Therefore, more efficient and effective alternatives are urgently required to provide the desired clinical outcomes. Chlorophyll (Chl) is a natural dietary NIR fluorescence emitting …


Novel Therapy Targeting Mutant-Krasg12d And Galectin-1 In Pancreatic Cancer, Ana I. Martinez Bulnes, Poornima Devi Shaji, Swathi Holla, Nirnoy Dan, Shabnam Malik, Murali M. Yallapu, Meena Jaggi, Stephen W. Behrman, Subhash C. Chauhan, Sheema Khan Oct 2023

Novel Therapy Targeting Mutant-Krasg12d And Galectin-1 In Pancreatic Cancer, Ana I. Martinez Bulnes, Poornima Devi Shaji, Swathi Holla, Nirnoy Dan, Shabnam Malik, Murali M. Yallapu, Meena Jaggi, Stephen W. Behrman, Subhash C. Chauhan, Sheema Khan

Research Colloquium

Introduction: In pancreatic ductal adenocarcinoma (PDAC), low patient survival rate remains a problem. The activating point mutation of KRAS on codon-12 is present in 70–95% of PDAC cases and so far, no success has been achieved to inhibit KRAS. KRASG12D regulates cell proliferation, differentiation, apoptosis; recent preliminary and published studies show high Galectin-1 (Gal-1) levels in both PDAC and stromal cells, which modulate tumor microenvironment and metastasis. Therefore, we have developed a novel combination therapy for PDAC by targeting mutated KRASG12D and Gal-1 to target both proliferation and metastasis in PDAC. This includes the delivery of KRASG12D …


Smoking And Drinking Activates Nf-Κb /Il-6 Axis To Promote Inflammation During Cervical Carcinogenesis, Vivek Kumar Kashyap, Prashanth Kb Nagesh, Ajay K. Singh, Andrew Massey, Godwin P. Darkwah, Murali M. Yallapu, Meena Jaggi, Subhash C. Chauhan Sep 2023

Smoking And Drinking Activates Nf-Κb /Il-6 Axis To Promote Inflammation During Cervical Carcinogenesis, Vivek Kumar Kashyap, Prashanth Kb Nagesh, Ajay K. Singh, Andrew Massey, Godwin P. Darkwah, Murali M. Yallapu, Meena Jaggi, Subhash C. Chauhan

Research Symposium

Background: High-risk strains of HPV are known to cause cervical cancer. Multiple clinical studies have emphasized that smoking and drinking are critical risk factors for cervical cancer and its high-grade precursors. In this study, we investigated the molecular mechanisms involved in the interplay of smoking and/or drinking with HPV infectivity and defined a systematic therapeutic approach for their attenuation in cervical cancer.

Methods: The impact of benzo[a]pyrene (B[a]P) and/or ethanol (EtOH) exposure on cervical cancer cells was assessed by measuring changes in cell proliferation, clonogenicity, biophysical properties, cell migration, and invasion. Expression of HPV16 E6/E7, NF-κB, cytokines, cell cycle, and …


Development And Evaluation Of A Nanofiber Membrane In Vitro As A Therapeutic Alternative For The Post Treatment In Breast Cancer Cell In A Murine Model, Bruno A. Valades-Aguilar, Diana Ginette Zarate-Triviño, José Raúl Rángel-López, Moises Armides Franco-Molina, Jorge Luis Menchaca-Arredondo, María Cristina Rodríguez-Padilla Sep 2023

Development And Evaluation Of A Nanofiber Membrane In Vitro As A Therapeutic Alternative For The Post Treatment In Breast Cancer Cell In A Murine Model, Bruno A. Valades-Aguilar, Diana Ginette Zarate-Triviño, José Raúl Rángel-López, Moises Armides Franco-Molina, Jorge Luis Menchaca-Arredondo, María Cristina Rodríguez-Padilla

Research Symposium

Worldwide female breast cancer is the most commonly diagnosed cancer, with an estimated 2.3 million new cases in 2020, reason for the need of targeted therapies that can maximize treatment success and minimize toxicity. Nanoparticles of gold (AuNps) exhibit cytotoxic properties against certain types of cancer cell lines. Nanofibers have been use in the drug delivery systems due to its degradability and high surface area. We proposed a membrane with nanometric fibers using polivinilic alcohol (PVA) and chitosan (Qts) loaded with AuNps and Doxorubicin (Doxo) with the purpose of diminish tumor regression.

PVA-Qts membrane was develop with electrospinning, the injection, …


Folate Conjugated Nanomedicines For Selective Inhibition Of Mtor Signaling In Polycystic Kidneys At Clinically Relevant Doses, Rajasekharreddy Pala, Ayan K. Barui, Ashraf M. Mohieldin, Jing Zhou, Surya M. Nauli Sep 2023

Folate Conjugated Nanomedicines For Selective Inhibition Of Mtor Signaling In Polycystic Kidneys At Clinically Relevant Doses, Rajasekharreddy Pala, Ayan K. Barui, Ashraf M. Mohieldin, Jing Zhou, Surya M. Nauli

Pharmacy Faculty Articles and Research

Although rapamycin is a very effective drug for rodents with polycystic kidney disease (PKD), it is not encouraging in the clinical trials due to the suboptimal dosages compelled by the off-target side effects. We here report the generation, characterization, specificity, functionality, pharmacokinetic, pharmacodynamic and toxicology profiles of novel polycystic kidney-specific-targeting nanoparticles (NPs). We formulated folate-conjugated PLGA-PEG NPs, which can be loaded with multiple drugs, including rapamycin (an mTOR inhibitor) and antioxidant 4-hydroxy-TEMPO (a nephroprotective agent). The NPs increased the efficacy, potency and tolerability of rapamycin resulting in an increased survival rate and improved kidney function by decreasing side effects and …


Nanoformulations Of Essential Oils Extracted From Pistacia Lentiscus And Boswellia Sacra And Investigation Of Their Anticancer, Antimicrobial, And Antioxidant Activities., Obaydah Abd Alkader Alabrahim Aug 2023

Nanoformulations Of Essential Oils Extracted From Pistacia Lentiscus And Boswellia Sacra And Investigation Of Their Anticancer, Antimicrobial, And Antioxidant Activities., Obaydah Abd Alkader Alabrahim

Theses and Dissertations

Essential oils (EOs) obtained from natural sources have shown promising biological and therapeutical properties such as anticancer, antimicrobial, and antioxidant activities, attributing to their high content of a variety of bioactive components. However, EOs’ therapeutic properties are limited by their low stability, poor bioavailability, high volatility, and low targeting ability. Therefore, the encapsulation and nanoformulation of EOs can maximize their therapeutical efficiency and physicochemical properties while overcoming their undesirable side effects and drawbacks. EOs extracted from the resins of Pistacia Lentiscus var. Chia (P.oil) and Boswellia Sacra (B.oil) are two promising EOs that have shown great therapeutic potential. P.oil was …


Protein L Functionalized Microparticles For Early Detection Of Surface Markers In Heterogeneous Colorectal Lesions, Saleh Ramezani Aug 2023

Protein L Functionalized Microparticles For Early Detection Of Surface Markers In Heterogeneous Colorectal Lesions, Saleh Ramezani

Dissertations and Theses (Open Access)

Colorectal cancer (CRC) is the third leading cause of cancer-related deaths among both men and women worldwide, a statistic that can be improved with early detection. Increased understanding of the tumor landscape has identified surface antigens that can be utilized to distinguish normal and cancerous tissue lining the colonic lumen. Use of antibodies conjugated to nano/micromaterials offers a means to detect these antigens, however, the heterogeneous nature of tumors makes it unlikely that antibodies against a single antigen will have sufficient sensitivity and specificity to detect all tumors. A versatile micromaterial able to be functionalized with more than one targeting …


Image Analysis Methodology For Evaluating Coating Uniformity Of Drug-Coated Angioplasty Balloons, Allison Dobson Zieschang Apr 2023

Image Analysis Methodology For Evaluating Coating Uniformity Of Drug-Coated Angioplasty Balloons, Allison Dobson Zieschang

LSU Master's Theses

Percutaneous transluminal balloon angioplasty (PTA) is a surgical procedure to treat peripheral artery disease, but restenosis causes suboptimal outcomes in many patients. Drug-coated angioplasty balloons (DCBs) were developed to reduce the risk of restenosis by delivering anti-proliferative drugs to the lesion. The efficacy of DCBs depends on factors like drug loading and drug release rate, both of which are directly impacted by the coating uniformity. This thesis evaluates the uniformity of DBCs using fluorescence microscopy, scanning electron microscopy (SEM), qualitative analysis, and an image processing algorithm. Uniformity was quantified by three measurements: histogram standard deviation, histogram percentage of coverage, and …


Development, Optimization, And In Vitro/In Vivo Evaluation Of Azelaic Acid Transethosomal Gel For Antidermatophyte Activity, Ali Nasr, Noha Badawi, Yasmine Tartor, Nader Sobhy, Ali Nasr Apr 2023

Development, Optimization, And In Vitro/In Vivo Evaluation Of Azelaic Acid Transethosomal Gel For Antidermatophyte Activity, Ali Nasr, Noha Badawi, Yasmine Tartor, Nader Sobhy, Ali Nasr

Pharmacy

Treatment of dermatophytosis is quite challenging. This work aims to investigate the antidermatophyte action of Azelaic acid (AzA) and evaluate its efficacy upon entrapment into transethosomes (TEs) and incorporation into a gel to enhance its application. Optimization of formulation variables of TEs was carried out after preparation using the thin film hydration technique. The antidermatophyte activity of AzA-TEs was first evaluated in vitro. In addition, two guinea pig infection models with Trichophyton (T.) mentagrophytes and Microsporum (M.) canis were established for the in vivo assessment. The optimized formula showed a mean particle size of 219.8 ± 4.7 nm and a …


Emergence Of Dental Nanomaterials: “Their Role In Performing Endodontic Therapy”, Chandrika Nama, John Wisniewski Dr. Feb 2023

Emergence Of Dental Nanomaterials: “Their Role In Performing Endodontic Therapy”, Chandrika Nama, John Wisniewski Dr.

Annual Research Symposium

No abstract provided.


Formulation Of Encapsulated Nanoparticles Of Leek Extract As Antimicrobial And Anticancer Agent, Rawan Hassan Mohamed Elghanam Feb 2023

Formulation Of Encapsulated Nanoparticles Of Leek Extract As Antimicrobial And Anticancer Agent, Rawan Hassan Mohamed Elghanam

Theses and Dissertations

Leek extract (LEK) has broad therapeutic activity. However, plant extract use has many drawbacks, which could be resolved using nanocarriers. The purpose of this research work was to prepare chitosan nanoparticles (CS NPs) encapsulating LEK and investigate their antioxidant, antimicrobial, and anticancer activity. Gas chromatography-mass spectroscopy was used to determine the LEK components. The CS-LEK NPs were produced by tripolyphosphate (TPP) crosslinking with chitosan (CS) the ionic gelation methodology. The particle size was 331 nm, zeta potential (ZP) was 28.9 mv, polydispersity index (PDI) was 0.4, encapsulation efficiency (EE) was 65.6%, and loading capacity (LC) was 28.8 % of the …


Characterization, Antibacterial, Antioxidant, Antidiabetic, And Anti-Inflammatory Activities Of Green Synthesized Silver Nanoparticles Using Phragmanthera Austroarabica A. G. Mill And J. A. Nyberg Extract, Shady Swidan, Dina Khodeer, Sarah Shabayek, Ali Nasr, Roaa Khinkar, Mohammed Aldurdunji, Maryam Ramadan, Jihan Badr Jan 2023

Characterization, Antibacterial, Antioxidant, Antidiabetic, And Anti-Inflammatory Activities Of Green Synthesized Silver Nanoparticles Using Phragmanthera Austroarabica A. G. Mill And J. A. Nyberg Extract, Shady Swidan, Dina Khodeer, Sarah Shabayek, Ali Nasr, Roaa Khinkar, Mohammed Aldurdunji, Maryam Ramadan, Jihan Badr

Pharmacy

Introduction: Diabetes mellitus is a chronic metabolic disorder that exhibited great expansion all over the world. It is becoming an epidemic disease adding a major burden to the health care system, particularly in developing countries.

Methods: The plant under investigation in the current study Phragmanthera austroarabica A. G. Mill and J. A. Nyberg is traditionally used in Saudi Arabia for the treatment of diabetes mellitus. The methanolic extract (200 mg/kg) of the plant and pure gallic acid (40 mg/kg), a major metabolite of the plant, as well as their silver nanoparticle formulae (AgNPs) were evaluated for their antidiabetic activity.

Results …


Soft X-Ray And Susceptibility Based Magnetic Resonance Imaging To Map Iron Distribution In Apples: Initial Results To Model Iron Storage In Water-Deficient Or Dehydrated Biological Tissue, Subhendra N. Sarkar, Eric Lobel, Evans Lespinasse, Zoya Vinokur, Analia Basilicata, Sonia Orellana, Maria Orellana, Aaliyah Salmon, Joanna Syska, Aravis Mcbroom, Jian Wang, Anam Riaz, Jodi-Ann Douglas Jan 2023

Soft X-Ray And Susceptibility Based Magnetic Resonance Imaging To Map Iron Distribution In Apples: Initial Results To Model Iron Storage In Water-Deficient Or Dehydrated Biological Tissue, Subhendra N. Sarkar, Eric Lobel, Evans Lespinasse, Zoya Vinokur, Analia Basilicata, Sonia Orellana, Maria Orellana, Aaliyah Salmon, Joanna Syska, Aravis Mcbroom, Jian Wang, Anam Riaz, Jodi-Ann Douglas

Publications and Research

Radiology departments have contributed significantly to greenhouse gases including release of toxic imaging contrast media to environment. We feel Radiology also has several spectroscopy and imaging tools that may apply to monitor and support cleaner environmental goals. The current manuscript is one of the firsts to prompt Radiology to move in that direction by non invasive imaging of bio metals that are less abundant in biological tissues but play key roles as co-factors in tissue structure and function. Conventional analytical tools are mostly invasive and cannot characterize the native oxidation states of bio metals. We chose carbohydrate matrix of metal-rich …


Self-Assembled Ternary Polypeptide Nanoparticles With Improved Biostability For Drug Delivery In Cancer Therapy, Preye Mike Agbana Jan 2023

Self-Assembled Ternary Polypeptide Nanoparticles With Improved Biostability For Drug Delivery In Cancer Therapy, Preye Mike Agbana

Theses and Dissertations--Pharmacy

Cancer remains a real and present threat to global health. In the United States, according to cancer statistics, almost 40% of people will be diagnosed with cancer at some point in their lifetime. Conventional chemotherapy has become the mainstay for cancer treatment option. However, chemotherapeutic agents are plagued with problems such as poor aqueous solubility, chemical degradation, Bio instability, and off-site toxicity due to non-specificity. New drug modalities are needed to tackle the ever-growing burden on cancer. In recent times, the promise of nanotechnology has aided to develop drug delivery vehicles to facilitate the administration of potent chemotherapeutics. Nanoformulations such …


Investigation Of Folate-Poly(Glutamic Acid)/Polyethylenimine/Dna Complexes For In Vitro Gene Delivery, Caleb Akers Jan 2023

Investigation Of Folate-Poly(Glutamic Acid)/Polyethylenimine/Dna Complexes For In Vitro Gene Delivery, Caleb Akers

Theses and Dissertations--Pharmacy

Gene therapy is currently being studied as a treatment for a variety of indications, including cancer, infectious disease, and cardiovascular diseases, among others. While many of the early treatments in the field involved the use of viral delivery methods, various safety, ethical, and financial concerns limit the potential uses of this methodology. As such, more recent research has focused on developing non-viral delivery platforms to alleviate some of the issues inherent in viral delivery. Recently, the release of the COVID-19 vaccines from Pfizer and Moderna represents a promising use of non-viral delivery as both utilized a lipid-based delivery vector.

Despite …


Interactions Of Carboxylated Nanodiamonds With Mouse Macrophages Cell Line And Primary Cells, Maisoun Bani-Hani, Stephen J. Beebe, Michael W. Stacey, Christopher Osgood Jan 2023

Interactions Of Carboxylated Nanodiamonds With Mouse Macrophages Cell Line And Primary Cells, Maisoun Bani-Hani, Stephen J. Beebe, Michael W. Stacey, Christopher Osgood

Bioelectrics Publications

Nanodiamonds (ND) have attracted significant interest for their use in several biomedical applications. These applications can be very useful if the safety and compatibility of ND are proven. We assessed the effects of ND (100 nm, Carboxylated) on primary macrophages and a macrophage-like cell line and found that these particles are not toxic to these cells at lower concentrations but may interfere with cell functions and differentiation. Internalization of ND by these cells in a time- and dose-dependent manner was mostly via phagocytosis and clathrin-dependent endocytosis and localized to the cytoplasm but not into the nucleus. No significant induction of …


Effect Of Decorating Super Paramagnetic Iron Oxide Nanoparticles With Silver Nanoparticles On Their Magneto-Photo Thermal Heating Efficiency, Anthony Joseph Afful Jan 2023

Effect Of Decorating Super Paramagnetic Iron Oxide Nanoparticles With Silver Nanoparticles On Their Magneto-Photo Thermal Heating Efficiency, Anthony Joseph Afful

All Graduate Theses, Dissertations, and Other Capstone Projects

Cancer treatment is rather dangerous to the body, often involving many secondary effects, including nausea, hair loss, and weight fluctuations. The search for non-invasive, highly efficient, and targetable treatments ameliorates these issues. Super paramagnetic iron oxide nanoparticles (SPIONS) have been used for other medical purposes such as magnetic resonance imaging contrast agent and is being extensively studied as a potential candidate for many cancer therapeutic and diagnostic approaches due to its biocompatibility and superior magnetic properties. When subjected to an external alternating magnetic field SPIONS generate heat mainly due to the friction of the SPIONS against the fluid it is …


Proposing An Rna Interference (Rnai)-Based Treatment For Human Immunodeficiency Virus (Hiv) By Analyzing The Post-Transcriptional Gene Targeting Of Sars-Cov-2, Hepatitis C Virus, And A549 Lung Cancer Cells, Arjun Jagdeesh Jan 2023

Proposing An Rna Interference (Rnai)-Based Treatment For Human Immunodeficiency Virus (Hiv) By Analyzing The Post-Transcriptional Gene Targeting Of Sars-Cov-2, Hepatitis C Virus, And A549 Lung Cancer Cells, Arjun Jagdeesh

Undergraduate Research Posters

Human Immunodeficiency Virus (HIV) is a retrovirus that infects CD4+ T cell lymphocytes in humans, leading to the development of Acquired Immunodeficiency Syndrome (AIDS) if left untreated. While current treatment methods, including antiretroviral combination treatments, effectively limit HIV replication, HIV can evade these treatments due to its high mutation rate. Long-term antiretroviral treatment can also be toxic to patients, meaning patients would benefit from a new mechanism of HIV treatment. RNA interference (RNAi) is an antiviral pathway found in mammals, plants, and insects that involves a small-interfering RNA that is incorporated into a protein complex called the RNA-induced Silencing Complex …


Radiotherapy Reimagined: Integrating Nanomedicines Into Radiotherapy Clinical Trials, Allison N Duross, Jack Phan, Alexander J Lazar, Joshua M Walker, Alexander R Guimaraes, Carole Baas, Sunil Krishnan, Charles R Thomas, Conroy Sun, Alexander F Bagley Jan 2023

Radiotherapy Reimagined: Integrating Nanomedicines Into Radiotherapy Clinical Trials, Allison N Duross, Jack Phan, Alexander J Lazar, Joshua M Walker, Alexander R Guimaraes, Carole Baas, Sunil Krishnan, Charles R Thomas, Conroy Sun, Alexander F Bagley

Faculty, Staff and Student Publications

Radioenhancing nanoparticles (NPs) are being evaluated in ongoing clinical trials for various cancers including head and neck, lung, esophagus, pancreas, prostate, and soft tissue sarcoma. Supported by decades of preclinical investigation and recent randomized trial data establishing clinical activity, these agents are poised to influence future multimodality treatment paradigms involving radiotherapy. Although the physical interactions between NPs and ionizing radiation are well characterized, less is known about how these agents modify the tumor microenvironment, particularly regarding tumor immunogenicity. In this review, we describe the key multidisciplinary considerations related to radiation, surgery, immunology, and pathology for designing radioenhancing NP clinical trials. …


Nano-Embedded Medical Devices And Delivery Systems In Interventional Radiology, Erin Marie D San Valentin, Allan John R Barcena, Carleigh Klusman, Benjamin Martin, Marites P Melancon Jan 2023

Nano-Embedded Medical Devices And Delivery Systems In Interventional Radiology, Erin Marie D San Valentin, Allan John R Barcena, Carleigh Klusman, Benjamin Martin, Marites P Melancon

Faculty, Staff and Student Publications

Nanomaterials research has significantly accelerated the development of the field of vascular and interventional radiology. The incorporation of nanoparticles with unique and functional properties in medical devices and delivery systems has paved the way for the creation of novel diagnostic and therapeutic procedures for various clinical disorders. In this review, we discuss the advancements in the field of interventional radiology and the role of nanotechnology in maximizing the benefits and mitigating the disadvantages of interventional radiology theranostic procedures. Several nanomaterials have been studied to improve the efficacy of interventional radiology interventions, reduce the complications associated with medical devices, improve the …


Synthesis, Characterization, And Application Of Chitosan Nanoparticles For In Vitro Studies On Hela Cancer Cells, Rejeena Jha Jan 2023

Synthesis, Characterization, And Application Of Chitosan Nanoparticles For In Vitro Studies On Hela Cancer Cells, Rejeena Jha

Graduate Theses/Dissertations

Chitosan is a fibrous substance that is derived from chitin, a natural substance in the shells of crustaceans. It possesses all the necessary qualities for being used as carrier for the transport of drugs and genes into tumor, such as biodegradability, biocompatibility, hydrophilicity, and non-toxicity and cationic in nature. Ionic gelation method was used to synthesize chitosan (CS) nanoparticles (NPs). Ionic gelation is a very benign process chemically that requires mixing a CS aqueous solution with a sodium tripolyphosphate (TPP) aqueous solution at room temperature. In addition, a surfactant polyethylene oxide (PEO) alone and a diblock copolymer of PEO and …


Nanofabrication For Precision Vaccinology, Karen Zagorski Dec 2022

Nanofabrication For Precision Vaccinology, Karen Zagorski

Theses & Dissertations

Vaccines are among the most effective and safe therapeutics known to mankind. Historically the approach to the creation of new vaccines has been dominated by empirical research, trial, and error. This thesis focuses on the more modern, rational approaches to vaccinology based on the current understanding of the inner workings of the immune system. We used nanotechnology for the generation of novel immunogens, addressed several challenges, and characterized the immune responses.

The preparation, characterization, and troubleshooting of several vaccines against dimeric amyloid beta are covered in chapters 4-6. Despite being ultimately unsuccessful, this part provided a deeper understanding of the …


The Impact Of Pegylation On Cellular Uptake And In Vivo Biodistribution Of Gold Nanoparticle Mri Contrast Agents., Nagwa El-Baz Dec 2022

The Impact Of Pegylation On Cellular Uptake And In Vivo Biodistribution Of Gold Nanoparticle Mri Contrast Agents., Nagwa El-Baz

Electronic Theses and Dissertations

Gold nanoparticles (GNPs) have become a pivotal platform for the delivery of pharmaceutical and diagnostic agents as well as for general therapeutic purposes. Despite their potential for use in biomedicine, their interaction with serum proteins is crucial as it could change their biological profile due to the formation of a protein corona, which can affect their delivery to target tissues in the body. Grafting the GNPs with polyethylene glycol (PEG) is widely used in research to decrease opsonization of the particles by serum proteins and decrease the uptake by the reticuloendothelial system. Here in this dissertation, we have developed a …


Immunological Conversion Of Solid Tumours Using A Bispecific Nanobioconjugate For Cancer Immunotherapy, Yifei Lu, Kristin Huntoon, Daeyong Lee, Yifan Wang, Jonghoon Ha, Yaqing Qie, Xuefeng Li, Benjamin R Schrank, Shiyan Dong, Thomas D Gallup, Minjeong Kang, Hai Zhao, Yi An, Zhaogang Yang, Jing Li, Betty Y S Kim, Wen Jiang Dec 2022

Immunological Conversion Of Solid Tumours Using A Bispecific Nanobioconjugate For Cancer Immunotherapy, Yifei Lu, Kristin Huntoon, Daeyong Lee, Yifan Wang, Jonghoon Ha, Yaqing Qie, Xuefeng Li, Benjamin R Schrank, Shiyan Dong, Thomas D Gallup, Minjeong Kang, Hai Zhao, Yi An, Zhaogang Yang, Jing Li, Betty Y S Kim, Wen Jiang

Faculty, Staff and Student Publications

Solid tumours display a limited response to immunotherapies. By contrast, haematological malignancies exhibit significantly higher response rates to immunotherapies as compared with solid tumours. Among several microenvironmental and biological disparities, the differential expression of unique immune regulatory molecules contributes significantly to the interaction of blood cancer cells with immune cells. The self-ligand receptor of the signalling lymphocytic activation molecule family member 7 (SLAMF7), a molecule that is critical in promoting the body's innate immune cells to detect and engulf cancer cells, is expressed nearly exclusively on the cell surface of haematologic tumours, but not on solid ones. Here we show …


Ionic Liquid: A Green Designer Solvent For Topical Delivery Of Nano System, Abulfadhel Jaber Neamah, Mowafaq M. Ghareeb, Asmaa M. Rashid Nov 2022

Ionic Liquid: A Green Designer Solvent For Topical Delivery Of Nano System, Abulfadhel Jaber Neamah, Mowafaq M. Ghareeb, Asmaa M. Rashid

Maaen Journal for Medical Sciences

Ionic liquids (ILs) defined as organic salts that produced from combination of organic cation with various types of organic/inorganic anions whose melting point less than 100°C. Because of their ionic character, most of ionic liquids exhibit useful properties such as no volatility, recyclability, good thermal stability, high conductivity and chemical stability. Ionic liquid cation - anion combinations permits the solvents to be prepared such as N, N-dialkylimidazolium as cation and acetate as anion. Ionic liquid was utilized as solvents or preparation components in various areas of drug delivery systems, also as novel liquid forms of APIs in various stages of …


Comparative Estimation Of The Cytotoxic Activity Of Different Parts Of Cynara Scolymus L.: Crude Extracts Versus Green Synthesized Silver Nanoparticles With Apoptotic Investigation, Shady Swidan, Amgad Khedr, Abdelaziz Farrag, Ali Nasr, Mohamed Nafie, Maged Abdel-Kader, Marwa Goda, Jihan Badr, Reda Abdelhameed Oct 2022

Comparative Estimation Of The Cytotoxic Activity Of Different Parts Of Cynara Scolymus L.: Crude Extracts Versus Green Synthesized Silver Nanoparticles With Apoptotic Investigation, Shady Swidan, Amgad Khedr, Abdelaziz Farrag, Ali Nasr, Mohamed Nafie, Maged Abdel-Kader, Marwa Goda, Jihan Badr, Reda Abdelhameed

Pharmacy

Different parts of Cynara scolymus L. and their green synthesized eco-friendly silver nanoparticles (AgNPs) were screened for their cytotoxicity and apoptotic activity. Results showed that flower extract AgNPs exhibited more potent cytotoxicity compared to the normal form against PC-3 and A549 cell lines with IC50 values of 2.47 μg/mL and 1.35 μg/mL, respectively. The results were compared to doxorubicin (IC50 = 5.13 and 6.19 μg/mL, respectively). For apoptosis-induction, AgNPs prepared from the flower extract induced cell death by apoptosis by 41.34-fold change and induced necrotic cell death by 10.2-fold. Additionally, they induced total prostate apoptotic cell death by a 16.18-fold …


Smart And Multi-Functional Magnetic Nanoparticles For Cancer Treatment Applications: Clinical Challenges And Future Prospects, Elham Aram, Masome Moeni, Roya Abedizadeh, Davood Sabour, Hamid Sadeghi-Abandansari, Jabbar Gardy, Ali Hassanpour Oct 2022

Smart And Multi-Functional Magnetic Nanoparticles For Cancer Treatment Applications: Clinical Challenges And Future Prospects, Elham Aram, Masome Moeni, Roya Abedizadeh, Davood Sabour, Hamid Sadeghi-Abandansari, Jabbar Gardy, Ali Hassanpour

Faculty, Staff and Students Publications

Iron oxide nanoparticle (IONPs) have become a subject of interest in various biomedical fields due to their magnetism and biocompatibility. They can be utilized as heat mediators in magnetic hyperthermia (MHT) or as contrast media in magnetic resonance imaging (MRI), and ultrasound (US). In addition, their high drug-loading capacity enabled them to be therapeutic agent transporters for malignancy treatment. Hence, smartening them allows for an intelligent controlled drug release (CDR) and targeted drug delivery (TDD). Smart magnetic nanoparticles (SMNPs) can overcome the impediments faced by classical chemo-treatment strategies, since they can be navigated and release drug via external or internal …


Silver Nanoparticles Formulation Of Flower Head’S Polyphenols Of Cynara Scolymus L.: A Promising Candidate Against Prostate (Pc-3) Cancer Cell Line Through Apoptosis Activation, Shady Swidan, Amgad Khedr, Marwa Goda, Abdelaziz Farrag, Ali Nasr, Mohamed Nafie, Maged Abdel-Kader, Jihan Badr, Reda Abdelhameed Sep 2022

Silver Nanoparticles Formulation Of Flower Head’S Polyphenols Of Cynara Scolymus L.: A Promising Candidate Against Prostate (Pc-3) Cancer Cell Line Through Apoptosis Activation, Shady Swidan, Amgad Khedr, Marwa Goda, Abdelaziz Farrag, Ali Nasr, Mohamed Nafie, Maged Abdel-Kader, Jihan Badr, Reda Abdelhameed

Pharmacy

Cynara scolymus L. (Family: Compositae) or artichoke is a nutritious edible plant widely used for its hepatoprotective effect. Crude extracts of flower, bract, and stem were prepared and evaluated for their in vitro antioxidant activity and phenolic content. The flower crude extract exhibited the highest phenolic content (74.29 mg GAE/gm) as well as the best in vitro antioxidant activity using total antioxidant capacity (TAC), ferric reducing antioxidant power (FEAP), and 1,1-diphenyl-2-picrylhyazyl (DPPH) scavenging assays compared with ascorbic acid. Phenolic fractions of the crude extracts of different parts were separated and identified using high-performance liquid chromatography HPLC-DAD analysis. The silver nanoparticles …


Quality By Design Based Optimization Of Anti-Inflammatory Nanoemulgels For Local Treatment Of Burn Wounds, Leah Dickey Aug 2022

Quality By Design Based Optimization Of Anti-Inflammatory Nanoemulgels For Local Treatment Of Burn Wounds, Leah Dickey

Electronic Theses and Dissertations

Burns are some of the most traumatizing and damaging skin injuries, with the potential of causing extensive internal damage that increases the risk of chronic wound development. Oral and topical analgesics in combination with antibiotics can provide temporary relief and improve wound healing progress for both mild and severe burns. However, recurrent systemic exposure to pain relievers and antibiotics has been associated with adverse side effects including nausea, drowsiness, abdominal pain, etc., and increased risk of new infections or even ulcers. Local and targeted drug delivery systems, such as nanomedicine, have gained attention as potentially more effective alternatives to improve …