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Articles 1 - 30 of 172
Full-Text Articles in Medical Cell Biology
An Inf2-Dependent Actin-Mediated Step In Inositol 1,4,5-Trisphosphate Receptor Cluster Formation And Activity, Maite R. Zavala, Amrapali Ghosh, Suresh K. Joseph, Rajarshi Chakrabarti
An Inf2-Dependent Actin-Mediated Step In Inositol 1,4,5-Trisphosphate Receptor Cluster Formation And Activity, Maite R. Zavala, Amrapali Ghosh, Suresh K. Joseph, Rajarshi Chakrabarti
Department of Pathology, Anatomy, and Cell Biology Faculty Papers
Intracellular calcium signaling plays a vital role in regulating various cellular processes including gene regulation, motility, metabolism, and cell death. Inositol 1,4,5-trisphosphate receptors (IP3Rs) on the endoplasmic reticulum (ER) are a major cation channel that regulates stimulus-induced calcium release from the ER. While several molecular players regulate the activity of IP3R, its regulation by actin filaments was uncharacterized. Here, we show that actin filaments polymerized by the specific actin nucleator INF2 facilitate agonist-induced IP3R activity. Our results demonstrate that INF2-mediated actin filaments regulate the formation and/or stability of IP3R clusters on the ER that have been previously shown to be …
Routine Transfusion Of Rh(D)-Positive Rbcs To Rh(D)-Negative Patients Designated As Do Not Resuscitate Conserves Rh(D)-Negative Red Blood Cell Inventory, Julie Katz Karp, Jovanna Everetts, Juliana Guarente, Angelica Vivero, Tiffany Bohr, Mary Harach
Routine Transfusion Of Rh(D)-Positive Rbcs To Rh(D)-Negative Patients Designated As Do Not Resuscitate Conserves Rh(D)-Negative Red Blood Cell Inventory, Julie Katz Karp, Jovanna Everetts, Juliana Guarente, Angelica Vivero, Tiffany Bohr, Mary Harach
Department of Pathology, Anatomy, and Cell Biology Faculty Papers
Background: A minority of blood donors are Rh(D)-negative, and Rh(D)-negative red blood cell (RBC) products are often overutilized. As such, Rh(D)-negative RBCs may be difficult to maintain in blood bank inventory.
Study design and methods: We changed our blood bank laboratory policy to approve non-alloimmunized Rh(D)-negative patients to receive Rh(D)-positive RBCs for routine transfusion under defined criteria. Those criteria included Rh(D)-negative males (all ages) and females (aged >50 years) who were designated as do not resuscitate (DNR), either with or without intubation, in the electronic medical record.
Results: From August 15, 2024 through August 15, 2025, a total of 204 …
Developing A Protocol For Non-Cellular Transplantation Of Donor Mitochondria Into Recipient Cells, Andrew Parton
Developing A Protocol For Non-Cellular Transplantation Of Donor Mitochondria Into Recipient Cells, Andrew Parton
Honors Theses
Tumor innervation has emerged as a critical feature of cancer progression, with increased nerve density correlating with enhanced aggressiveness, metastatic dissemination, and poor clinical outcome. However, the functional contribution of neurons to tumor biology remains incompletely defined. We recently identified the intercellular transfer of mitochondria from neurons to cancer cells as a mechanism that promotes tumor progression. We therefore hypothesized that disruption of this transfer could attenuate tumor aggressivity. To directly investigate this process, we developed an approach to isolate mitochondria from donor cells and transplant them into recipient cancer cells independently of canonical cell-cell interactions. Transferred mitochondria were tracked …
The Impact Of Glucose Exposure On Organic Cation Transporters (Oct) Function In A Corneal Epithelial Cell Line, David A. Garza
The Impact Of Glucose Exposure On Organic Cation Transporters (Oct) Function In A Corneal Epithelial Cell Line, David A. Garza
Theses & Dissertations
Organic cation transporters (OCT) facilitate the movement of neurochemicals and medications, contribute to the removal of cellular waste, and facilitate neuronal communication. Three subtypes of these high-capacity, low-affinity transporters (OCT1, OCT2, and OCT3) are differently expressed in peripheral tissues such as the liver, kidneys, as well as the central nervous system. OCTs are also expressed in ocular tissues. Chronic hyperglycemia is a complication commonly associated with diabetes that can lead to ocular diseases such as diabetic keratopathy, which affects the cornea. In this project, we expose immortalized human corneal epithelial cells (HCE-S) to various glucose concentrations to study their impact …
Effects Of Tubulin-Binding Medications On Microplastic Uptake And Cyotoskeletal Functionality Across Diverse Cell Types, Alejandra D. Favela Santos
Effects Of Tubulin-Binding Medications On Microplastic Uptake And Cyotoskeletal Functionality Across Diverse Cell Types, Alejandra D. Favela Santos
Posters - 2026
• Microtubules are composed of of a- and b- tubulin heterodimers, vital for cell structure, shape, and intracellular transport • Microtubules are also useful as they separate chromosomes during cell division • Microplastics (< 5 mm) are considered a health threat and have been found throughout the whole body (1) o In several studies, microplastics have been correlated to higher rates cardiorespiratory issues, endocrine disruption, and cancer (1) • Tubulin-binding medications are widely used as chemotherapeutic agents as they are known for disrupting cell division and targeting tubulin (2,3) o In this study, these medications were used to determine whether microtubules play a role in microplastic uptake § Colchicine typically binds to tubulins and arrests polymerization and growth § Nocodazole disrupts polymerization and prevents spindle formation § Vinblastine inhibits microtubule assembly and disruptions miotic spindle formation.
• The purpose of this study was to determine if different concentrations of tubulin-binding medications affect microplastic uptake o C2C12, RAW 264.7, and MOVAS cell lines were used to evaluate whether these changes are cell type specific
If microtubule dynamics are disrupted, microplastic uptake can be affect in a concentration-dependent and cell type- specific manner.
Gene Expression And Apoptotic Responses To Panobinostat Treatment And Yap Knockdown In Ewing Sarcoma Cells, Luna Collazo-Garcia, Alejandra Favela Santos, Madeline Torres-Salazar, Isabella Toscano
Gene Expression And Apoptotic Responses To Panobinostat Treatment And Yap Knockdown In Ewing Sarcoma Cells, Luna Collazo-Garcia, Alejandra Favela Santos, Madeline Torres-Salazar, Isabella Toscano
Posters - 2026
Ewing sarcoma is an aggressive pediatric cancer driven by abnormal gene expression caused by the EWS-FLI1 fusion protein
Usually treated with intensive treatments such as chemotherapy and radiation
Outcomes remain poor for metastatic disease, highlighting the need for new therapeutic strategies
The Hippo signaling pathway regulates cell proliferation and survival through the transcriptional co-activator YAP1
Mitochondrial Transfer And Induced Ros As A Therapeutic Strategy In Idh2-Mutant Chondrosarcoma, Vegas R. Bedder, Caleb Wyckoff, Chris Osgood, Gavin A. Vasquez, Michael Stacey
Mitochondrial Transfer And Induced Ros As A Therapeutic Strategy In Idh2-Mutant Chondrosarcoma, Vegas R. Bedder, Caleb Wyckoff, Chris Osgood, Gavin A. Vasquez, Michael Stacey
Knowledge and Creativity Expo
Chondrosarcoma (CS) are common bone cancers that produce cartilaginous tumors and are extremely refractive to chemo-and-radiation therapies, leaving very limited treatment options. They contain mutations in the isocitrate dehydrogenase genes, IDH1 or IDH2. Either IDH1 or IDH2 mutations are present in individual tumors, but not both. They both convert alphaketoglutarate (αKG) into the potent oncometabolite D-2-hydroxyglutarate (D2HG). D2HG can be transported from the tumors to cells of the tumor microenvironment (TME) where it can alter metabolic and epigenetic profiles in recipient cells. The process of α-KG to D2HG conversion occurs in the cytoplasm of IDH1 mutant cells, and in the …
Long Acting Beta2-Adrenergic Receptor Agonists Reverse Diabetic Nephropathy And Liver Steatosis In Murine Models Of Diabetes And Are Associated With Protection In Retrospective Human Studies, Brennan Winkler
MUSC Theses and Dissertations
Diabetes Mellitus (DM) affects 13.9% of men and 14.3% of women worldwide, a total of approximately 828 million people. Patients with diabetes are at risk of several complications including diabetic nephropathy (DN) and metabolic-associated steatohepatitis (MASH). These diseases eventually lead to end stage kidney disease (ESKD) and liver failure requiring dialysis and organ transplantation. In addition, diabetes exacerbates disease severity of autosomal dominant polycystic kidney disease (ADPKD), the most common potentially lethal genetic disease to affect humans with a prevalence of 1 in 500-1000. Therefore, a therapeutic approach that can attenuate organ damage and restore function in patients with DM, …
Investigation Into The A/Ss Of Cervical Cancer And Its Effects On Tumor Control Probability In Radiation Therapy, Cameron Thayer-Freeman
Investigation Into The A/Ss Of Cervical Cancer And Its Effects On Tumor Control Probability In Radiation Therapy, Cameron Thayer-Freeman
Theses and Dissertations--Radiation Medicine
The standard of care for locally advanced cervical cancer is chemoradiation, consisting of conventional external beam therapy (EBT) followed by a boost of high dose rate (HDR) brachytherapy. These two radiation treatments will illicit different degrees of biological response depending on the tissue in question, and quantifying the overall effect the combined treatments will have require some form of biological modeling. The linear quadratic (LQ) model of cell survival is the most widely used radiobiological model in clinics across the nation.
It is quantified by the parameters a and ß, which model how radiation generates lethal damage in a population …
The Effects Of Stress-Related Hormones On Excitatory Synapse Formation, Autumn C. Garvey
The Effects Of Stress-Related Hormones On Excitatory Synapse Formation, Autumn C. Garvey
Honors Undergraduate Theses
Stress profoundly influences brain function through neuromodulatory hormones that regulate synaptic plasticity, yet how temporal patterns of hormone exposure shape excitatory synapse formation remains poorly understood. This study investigates how exposure to stress hormones, norepinephrine and cortisol, affects excitatory synapse development. While existing research primarily compares concentration models, real-world stress occurs in variable patterns that may produce distinct neural outcomes. To address this gap, differentiated Neuro2A neuronal cells are exposed to norepinephrine or cortisol under a continuous treatment paradigm designed to model chronic stress conditions. Following treatment, immunofluorescence imaging is utilized to quantify excitatory synapse formation through analysis of presynaptic …
Exploring Anticholinergic Neurotoxicity: Diphenhydramine's Impact On Neuro-2a Cell Morphology, Expression, And Viability, Jordan B. Mcintyre
Exploring Anticholinergic Neurotoxicity: Diphenhydramine's Impact On Neuro-2a Cell Morphology, Expression, And Viability, Jordan B. Mcintyre
Honors Undergraduate Theses
Anticholinergic medications, such as diphenhydramine (commonly known as Benadryl), are increasingly recognized for their association with cognitive impairment and neurodegenerative disease. These medications, which inhibit the action of acetylcholine, a neurotransmitter essential for the formation and utilization of the central and peripheral nervous system, have been implicated in conditions such as dementia and may impact fundamental cellular processes like neurogenesis and cell proliferation. This study investigates the effects of diphenhydramine on neurogenesis when introduced to Neuro-2a cells during differentiation. For all studies cells were plated on coverslips or in 6-well plates with differentiation media containing 0 ng/mL, 50 ng/mL, …
Antiestrogens As Bone Protective Therapeutics For Estrogen Receptor-Positive Breast Cancer In The Presence Of Osteoporosis, Faith E. Parker, Emily K. Zboril, David C. Boyd, Rachel Myrick, J. Chuck Harrell
Antiestrogens As Bone Protective Therapeutics For Estrogen Receptor-Positive Breast Cancer In The Presence Of Osteoporosis, Faith E. Parker, Emily K. Zboril, David C. Boyd, Rachel Myrick, J. Chuck Harrell
Undergraduate Research Posters
Breast cancer (BC) is one of the most significant causes of mortality among women and the second leading cause of cancer death in women. The estrogen receptor (ER) is a key oncogenic driver in the majority of breast cancer. ER+ BC is the most common molecular subtype of BC. Management of ER+ breast cancer varies depending on menopausal status. For premenopausal women, the goal is to suppress estradiol production from the ovaries with surgical oophorectomy and/or aromatase inhibitors. In postmenopausal women, endocrine therapy (ET) serves to suppress estradiol production from sources other than the ovaries. During the menopausal transition, estradiol …
Impact Of S-Phase Kinase Protien 2 Blockades On Hematopoetic Stem Cell Metabolism, Nicole Elmaraghy
Impact Of S-Phase Kinase Protien 2 Blockades On Hematopoetic Stem Cell Metabolism, Nicole Elmaraghy
Electronic Theses, Projects, and Dissertations
Hematopoietic stem and progenitor cells (HSPCs) quiescence is vital for the success of bone marrow transplantation, as it preserves long term self- renewal and prevents premature exhaustion (Takubo et al., 2013; Wilson et al., 2008). However, bone marrow transplant (BMT) failure remains a clinical challenge, often due to lack of long-term engraftment and insufficient stress reliance. Both of these characteristics are tightly linked to disrupted stem cell quiescence and metabolic imbalance (Anso et al., 2017; Vannini et al., 2016). One key player is S-phase kinase protein (SKP2), an E3 ubiquitin ligase that targets cell cycle inhibitors, like p27, for proteosome …
The Influence Of Myocardin Effector Genes On The Tgf-Beta Smad3 Signaling Pathway In Human Pleural Mesothelial Cells, Hema Chandra Hrushi Dusharla
The Influence Of Myocardin Effector Genes On The Tgf-Beta Smad3 Signaling Pathway In Human Pleural Mesothelial Cells, Hema Chandra Hrushi Dusharla
Biotechnology Theses
Pleural Fibrosis (PF) involves excessive extracellular matrix (ECM) deposition, mainly by myofibroblasts, leading to pleural thickening and impaired lung function. Pleural mesothelial cells (PMCs) contribute via mesothelial and mesenchymal transition (MesoMT), triggered by cytokines like TGF-β. Our lab identified Myocardin (MyoCD), a transcriptional co-activator of cardiac and smooth muscle, is a master regulator of pleural fibrosis through interactions with serum response factor (SRF) and Smad2/3 transcription factors which initiate fibrosis signaling. RNA sequencing and qPCR analysis revealed that silencing MyoCD decreased the expression of CTNNB1, MDFI, and Tspan2. MDFI emerged as a potent candidate, as this gene affecting the expression …
Carbon Monoxide Releasing Polymeric Micelles, Riya Joshi
Carbon Monoxide Releasing Polymeric Micelles, Riya Joshi
Electronic Theses and Dissertations
Carbon monoxide (CO), traditionally known as a toxic gas, has emerged as a potential therapeutic agent due to its cytoprotective, anti-inflammatory, and vasodilatory properties. This study explores the development of CO-releasing polymeric micelles as a controlled delivery system for biomedical applications. Using ring-opening metathesis polymerization (ROMP), we synthesized diblock copolymers incorporating CO-releasing moiety diphenylcyclopropenone (DPCP) with hydrophilic polyethylene glycol (PEG) to enhance solubility and stability of the overall CO releasing system. Dynamic light scattering (DLS) and electron microscopy (EM) confirmed the formation of well-defined micelles, while fluorescence assays demonstrated efficient CO release with the use of Iridium photocatalyst under 470 …
Ks151 Synergizes With Venetoclax And Abt-737 In Aml: Efficacy In Both Flt3-Wildtype And Flt3-Mutant Models, Sahil Jethi, Arnold Rojas, Omar S. Al-Odat, Krishne Gowda, Subash C. Jonnalagadda, Manoj Pandey
Ks151 Synergizes With Venetoclax And Abt-737 In Aml: Efficacy In Both Flt3-Wildtype And Flt3-Mutant Models, Sahil Jethi, Arnold Rojas, Omar S. Al-Odat, Krishne Gowda, Subash C. Jonnalagadda, Manoj Pandey
Rowan-Virtua Research Day
Acute myeloid leukemia (AML) is the most common leukemia in adult patients, with a 5-year survival rate of less than 30 percent. Therefore, more effective therapeutic strategies are required to prolong the survival of AML patients. Importantly, anti-apoptotic proteins, especially B-cell lymphoma 2 (Bcl-2), overexpression in AML is associated with uncontrolled growth as well as chemoresistance. Unsurprisingly, Bruton’s tyrosine kinase (BTK) overexpresses in AML and associated with poor prognosis and chemoresistance. The FDA-approved BTK inhibitor, ibrutinib, has been successful in treating other hematologic malignancies, but a proportion of patients relapse mainly because of acquired mutations at Cys481Ser (C481S) in the …
Exploring Intracellular Signaling Responses To Ks18, A Potent Mcl-1 Inhibitor, In Multiple Myeloma, Emily Nelson, Omar S Al-Odat, Dhruti A. Brahmbhatt, Tulin Budak-Alpdogan, Subash Jonnalagadda, Manoj Kumar Pandey
Exploring Intracellular Signaling Responses To Ks18, A Potent Mcl-1 Inhibitor, In Multiple Myeloma, Emily Nelson, Omar S Al-Odat, Dhruti A. Brahmbhatt, Tulin Budak-Alpdogan, Subash Jonnalagadda, Manoj Kumar Pandey
Rowan-Virtua Research Day
Multiple myeloma (MM), a cancer of plasma B cells, is a hematological malignancy in which patients inevitably relapse and develop drug resistance. Mcl-1, a member of the anti-apoptotic subgroup of Bcl-2 family proteins, plays a critical role in the progression of multiple myeloma and contributes significantly to drug resistance. Elevated Mcl-1 expression is observed in approximately 52% of MM patients at diagnosis, increasing to 81% at relapse. Given its driving role in disease progression and therapy resistance, Mcl-1 inhibition has emerged as a promising therapeutic target, prompting ongoing research into the development and clinical evaluation of Mcl-1 inhibitors, particularly for …
Developing A Small Molecule To Inhibit Hsf1 Expression In Cancer And Evaluating Natural Genetic Variation In Small Molecule Toxicity., Michaela Kendal Foley
Developing A Small Molecule To Inhibit Hsf1 Expression In Cancer And Evaluating Natural Genetic Variation In Small Molecule Toxicity., Michaela Kendal Foley
Theses and Dissertations
Each year cancer affects nearly 20 million people worldwide and genetic differences across populations can impact cancer onset and progression. Specifically, tumors with high levels of HSF1, the master regulator of the cytoprotective heat shock response (HSR), are correlated with poor patient outcomes in multiple cancers such as prostate, breast, and melanoma. Subsequently, the development of pharmacological inhibitors of HSF1 represents a promising strategy for anticancer therapeutics. Using a luciferase-based transcriptional reporter, two small molecule libraries were screened for inhibitors of HSF1 expression in human embryonic kidney cells, yielding ten compounds that decrease HSF1 expression. To identify if cancer lines …
Ascl2 Positive Tumor Cells Modulate The Response Of Metastatic Colorectal Cancer To Mapk-Targeting Therapy, Oscar Eduardo Villarreal
Ascl2 Positive Tumor Cells Modulate The Response Of Metastatic Colorectal Cancer To Mapk-Targeting Therapy, Oscar Eduardo Villarreal
Dissertations and Theses (Open Access)
Colorectal cancer (CRC) is the second leading cause of cancer related deaths with nearly a quarter of patients presenting with metastatic disease at the time of their diagnosis. Therapeutic management of metastatic CRC continues to be a major challenge due to therapy resistance and disease heterogeneity. Due to its central role in tumorigenesis, CRC is commonly treated with MAPK pathway inhibitors (MAPKi). However, clinical trials repeatedly demonstrates that durability of benefit is short-lived in many patients. While genomic mechanisms of acquired resistance have been described, they explain a minority of patients, and further research is needed to determine the underlying …
Relationship Between Processing Body Formation, Epithelial-To-Mesenchymal Transition, And Invasion In Lung Adenocarcinoma, Amanda Warner
Relationship Between Processing Body Formation, Epithelial-To-Mesenchymal Transition, And Invasion In Lung Adenocarcinoma, Amanda Warner
Dissertations and Theses (Open Access)
Lung cancer is the leading cause of cancer-related deaths in the United States, largely due to its ability to metastasize. Epithelial-to-mesenchymal transition (EMT) is a process that enhances the ability of cells to lose their cell-cell contacts, invade, and enter the blood stream which are essential during metastasis. Many transcriptional gene programs are altered during EMT such as activation of mesenchymal transcription factors, like ZEB1, and enhanced response to the TGFβ1 cytokine. In oncogenic contexts, TGFβ1 enhances the formation of processing-bodies (P-bodies) where P-body proteins are required for invasion in multiple cancerous cell lines. P-bodies are a type of ribonucleoprotein …
Dysregulation Of Cholesterol Metabolism And Sorafenib Drug Resistance In Hepatocellular Carcinoma, Veerababu Nagati, Dennis Kwabiah, Yamile Abuchard Anaya, Ana Ayala Pazzi, Manish K. Tripathi
Dysregulation Of Cholesterol Metabolism And Sorafenib Drug Resistance In Hepatocellular Carcinoma, Veerababu Nagati, Dennis Kwabiah, Yamile Abuchard Anaya, Ana Ayala Pazzi, Manish K. Tripathi
Research Symposium
Background: Hepatocellular carcinoma (HCC) is among the most prevalent cancers and a leading cause of cancer-related deaths worldwide. Sorafenib, a multikinase inhibitor, serves as a key first-line treatment for HCC when surgical intervention is not an option. However, primary and acquired resistance to sorafenib has significantly limited its effectiveness, reducing the disease control rate. Dysregulation of numerous genes that influence cancer cell proliferation, survival, and drug resistance contributes to this challenge. Identifying the molecular drivers of sorafenib resistance remains critical to improving treatment outcomes. Several factors, including activation of oncogenic pathways (e.g., Akt/mTOR), hypoxia, cholesterol metabolism, EMT, multidrug resistance, and …
Uca1 As A Key Regulator Of The Warburg Effect During Anoikis Resistance In Colorectal Cancer Metastasis, Ricardo Pequeno Bracho, Salique Hassan Shaham, Yamile Abuchard Anaya, Sophia Leslie, Kyle Doxtater, Subhash Chauhan, Bilal Hafeez, Tamer Oraby, Manish K. Tripathi
Uca1 As A Key Regulator Of The Warburg Effect During Anoikis Resistance In Colorectal Cancer Metastasis, Ricardo Pequeno Bracho, Salique Hassan Shaham, Yamile Abuchard Anaya, Sophia Leslie, Kyle Doxtater, Subhash Chauhan, Bilal Hafeez, Tamer Oraby, Manish K. Tripathi
Research Symposium
Colorectal carcinoma (CRC) is the second leading cause of cancer-related mortality in the United States. While localized CRC has a 90% five-year survival rate, this drops sharply to 14% upon metastasis. Metastasis occurs in approximately 40–50% of CRC cases and requires cancer cells to acquire anoikis resistance—a critical adaptation allowing survival after detachment from the extracellular matrix, enabling migration and colonization of secondary sites. Understanding the molecular mechanisms driving anoikis resistance, particularly those linked to altered glucose metabolism, is essential for developing targeted therapies for metastatic CRC.
Cancer cells frequently exhibit the Warburg Effect, a metabolic adaptation favoring glycolysis over …
The Correlation Between Temporomandibular Disorder (Tmd) And Vitamin D Deficiency, Iris Kim, Claudia Freitas
The Correlation Between Temporomandibular Disorder (Tmd) And Vitamin D Deficiency, Iris Kim, Claudia Freitas
Annual Research Symposium
No abstract provided.
An In Vivo Study Of Lns8801, A Gper Agonist, In A Spontaneous Melanoma-Prone Mouse Model, Tgs., Christina Marinaro, John Sauer, Christopher A Natale, Todd Ridky, Suzie Chen
An In Vivo Study Of Lns8801, A Gper Agonist, In A Spontaneous Melanoma-Prone Mouse Model, Tgs., Christina Marinaro, John Sauer, Christopher A Natale, Todd Ridky, Suzie Chen
Rowan-Virtua School of Osteopathic Medicine Departmental Research
Melanoma is the most aggressive and deadly form of skin cancer that arises from the transformation of melanocytes, the pigment producing cells of the skin. In the year 2024 there will be approximately 10,000 new cases of melanoma diagnosed and approximately 8,000 deaths attributed to melanoma in the United States. In this study we treated a group of male and female transgenic mice that spontaneously develop metastatic melanoma, TGS, with a G-protein-coupled estrogen receptor agonist LNS8801 to assess the efficacy on disease progression. A second group of male and female TGS mice was also exposed to UVB irradiation to mimic …
Xanthine Oxidoreductase, Uric Acid, And Iron Homeostasis: Discovering A Therapeutic Vulnerability In Breast Cancer, Matthew G. Chapa
Xanthine Oxidoreductase, Uric Acid, And Iron Homeostasis: Discovering A Therapeutic Vulnerability In Breast Cancer, Matthew G. Chapa
Graduate Theses, Dissertations, and Problem Reports (ETD)
Breast cancer remains the most frequently diagnosed malignancy and the leading cause of cancer related deaths in women. This is primarily due to distant metastases, which highlight the necessity to understand factors that contribute to breast cancer progression. Emerging evidence associates decreased tumor xanthine oxidoreductase (XOR) expression with a poorer prognosis, increased recurrence, and a more aggressive phenotype. While healthy liver, intestines, kidneys, and breast tissue have robust XOR expression and activity, there is a tendency for this to be ablated in carcinogenesis. This dissertation investigates XOR's role in breast cancer and identifies its product, uric acid (UA), as possessing …
Characterizing A Rad23 Dependent Ultraviolet Radiation Resistance In Tetrahymena Thermophila, Emma June Liimatta
Characterizing A Rad23 Dependent Ultraviolet Radiation Resistance In Tetrahymena Thermophila, Emma June Liimatta
Graduate Theses/Dissertations
In 2020, 10 million deaths were attributed to cancer, with multidrug resistance being responsible for over 90% of deaths in cancer patients receiving treatment. This study utilized the model organism Tetrahymena thermophila to study how cells become resistant to Ultraviolet Radiation (UV) radiation, a process similar to multidrug resistance, specifically focusing on the nucleotide excision repair and ubiquitin shuttle protein Rad23. The National Cancer Institute documented 30-60% of cancers tested had a mutation in RAD23. Knockdown of RAD23 in Tetrahymena thermophila demonstrated a UV resistance phenotype with decreased nucleotide excision repair and differential expression of proteins active within caspase-independent …
Characterization Of The Overexpression Of Reca Homologs Rad51 And Dmc1 In Tetrahymena Thermophila, Jianna M. Cox
Characterization Of The Overexpression Of Reca Homologs Rad51 And Dmc1 In Tetrahymena Thermophila, Jianna M. Cox
Graduate Theses/Dissertations
RecA homologs, Dmc1 and Rad51, work to repair DNA double-strand breaks (DSBs) within the cell through the recombination of homologous sections of DNA. Dmc1 works to repair programmed DSBs through meiotic recombination, while Rad51 functions to repair both meiotic and non-meiotic DSBs, the latter repaired through the process of homologous recombination repair (HHR). Chemotherapeutics, exogenous agents, work to form DSBs in cancer cells, attempting to inhibit the cell’s growth. A hyper recombinant phenotype is often seen in cancer cells due to the overexpression of RAD51, leading to drug resistance, the persistence of cancers, and an overall poor patient outcome. …
Single-Molecule Studies Reveal The Off-Pathway Early Paused State Intermediates As A Target Of Streptolydigin Inhibition Of Rna Polymerase And Its Dramatic Enhancement By Gre Factors, Anatolii Arseniev, Mikhail Panfilov, Georgii Pobegalov, Alina Potyseva, Polina Pavlinova, Maria Yakunina, Jookyung Lee, Sergei Borukhov, Konstantin Severinov, Mikhail Khodorkovskii
Single-Molecule Studies Reveal The Off-Pathway Early Paused State Intermediates As A Target Of Streptolydigin Inhibition Of Rna Polymerase And Its Dramatic Enhancement By Gre Factors, Anatolii Arseniev, Mikhail Panfilov, Georgii Pobegalov, Alina Potyseva, Polina Pavlinova, Maria Yakunina, Jookyung Lee, Sergei Borukhov, Konstantin Severinov, Mikhail Khodorkovskii
Rowan-Virtua School of Osteopathic Medicine Departmental Research
Antibiotic streptolydigin (Stl) inhibits bacterial transcription by blocking the trigger loop folding in the active center of RNA polymerase (RNAP), which is essential for catalysis. We use acoustic force spectroscopy to characterize the dynamics of transcription elongation in ternary elongation complexes (ECs) of RNAP in the presence of Stl at a single-molecule level. We found that Stl induces long-lived stochastic pauses while the instantaneous velocity of transcription between the pauses is unaffected. Stl enhances the short-lived pauses associated with an off-pathway early paused state intermediates of the RNAP nucleotide addition cycle. Unexpectedly, we found that transcript cleavage factors GreA and …
Sk609, A Novel Dopamine D3 Receptor Agonist And Norepinephrine Transporter Blocker With Putative Pro-Cognitive Actions, Does Not Induce Psychostimulant-Like Increases In Risky Choice During Probabilistic Discounting, Christopher P. Knapp, Brooke Fallon, Sandhya Kortagere, Barry D. Waterhouse, Stan B Floresco, Rachel L Navarra
Sk609, A Novel Dopamine D3 Receptor Agonist And Norepinephrine Transporter Blocker With Putative Pro-Cognitive Actions, Does Not Induce Psychostimulant-Like Increases In Risky Choice During Probabilistic Discounting, Christopher P. Knapp, Brooke Fallon, Sandhya Kortagere, Barry D. Waterhouse, Stan B Floresco, Rachel L Navarra
Rowan-Virtua School of Osteopathic Medicine Departmental Research
RATIONALE: Psychostimulants, such as amphetamine (AMPH) and methylphenidate (MPH), non-selectively elevate extracellular concentrations of the catecholamine neurotransmitters, dopamine (DA) and norepinephrine (NE), and are common pharmacological strategies used to improve prefrontal cortex (PFC)-dependent cognitive dysfunction. However, this approach can be problematic given AMPH has been shown to increase preference for risky choices in a rodent assay of risk/reward decision making. SK609 is a novel NE reuptake blocker that selectively activates DA D3 receptors without affinity for the DA transporter. SK609 has been shown to improve cognitive performance without increasing psychostimulant-like spontaneous locomotor activity, suggesting SK609 may benefit neurocognitive function without …
Mechanisms Of Extracellular Vesicle Uptake And Implications For The Design Of Cancer Therapeutics, Stephanie R Jackson Cullison, Joseph P Flemming, Kubra Karagoz, Peter J Wermuth, Mỹ G Mahoney
Mechanisms Of Extracellular Vesicle Uptake And Implications For The Design Of Cancer Therapeutics, Stephanie R Jackson Cullison, Joseph P Flemming, Kubra Karagoz, Peter J Wermuth, Mỹ G Mahoney
Rowan-Virtua School of Osteopathic Medicine Departmental Research
The translation of pre-clinical anti-cancer therapies to regulatory approval has been promising, but slower than hoped. While innovative and effective treatments continue to achieve or seek approval, setbacks are often attributed to a lack of efficacy, failure to achieve clinical endpoints, and dose-limiting toxicities. Successful efforts have been characterized by the development of therapeutics designed to specifically deliver optimal and effective dosing to tumour cells while minimizing off-target toxicity. Much effort has been devoted to the rational design and application of synthetic nanoparticles to serve as targeted therapeutic delivery vehicles. Several challenges to the successful application of this modality as …