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Articles 31 - 60 of 203

Full-Text Articles in Translational Medical Research

An Investigation Into The Potential Of Cell Therapies For Acute Myeloid Leukemia (Aml) Treatment, Amanda Eckstrom May 2025

An Investigation Into The Potential Of Cell Therapies For Acute Myeloid Leukemia (Aml) Treatment, Amanda Eckstrom

Dissertations and Theses (Open Access)

Despite recent advances in acute myeloid leukemia (AML) treatment, curative rates remain poor with high rates of relapse and many patients are unable to tolerate the intensive chemotherapy standard of care regimen. Cell therapies have shown great success against hematologic malignancies but face several challenges including treatment-related toxicities and human-leukocyte antigen (HLA) matching. Natural killer (NK) cells and gamma delta (γδ) T cells offer alternative effector cell options for cell therapies that do not require HLA-matching and have shown low toxicity in previous studies. In this project, we sought to evaluate FT538 induced pluripotent stem cell-derived NK (iPSC-NK) and donor-derived …


Tobacco Smoke Exposure Is A Driver Of Altered Oxidative Stress Response And Immunity In Head And Neck Cancer, Yang Li, Pedram Yadollahi, Fonma N Essien, Vasanta Putluri, Chandra Shekar R Ambati, Karthik Reddy Kami Reddy, Abu Hena Mostafa Kamal, Nagireddy Putluri, Lama M Abdurrahman, Maria E Ruiz Echartea, Keenan J Ernste, Akshar J Trivedi, Jonathan Vazquez-Perez, William H Hudson, William K Decker, Rutulkumar Patel, Abdullah A Osman, Farrah Kheradmand, Stephen Y Lai, Jeffrey N Myers, Heath D Skinner, Cristian Coarfa, Kwangwon Lee, Antrix Jain, Anna Malovannaya, Mitchell J Frederick, Vlad C Sandulache Apr 2025

Tobacco Smoke Exposure Is A Driver Of Altered Oxidative Stress Response And Immunity In Head And Neck Cancer, Yang Li, Pedram Yadollahi, Fonma N Essien, Vasanta Putluri, Chandra Shekar R Ambati, Karthik Reddy Kami Reddy, Abu Hena Mostafa Kamal, Nagireddy Putluri, Lama M Abdurrahman, Maria E Ruiz Echartea, Keenan J Ernste, Akshar J Trivedi, Jonathan Vazquez-Perez, William H Hudson, William K Decker, Rutulkumar Patel, Abdullah A Osman, Farrah Kheradmand, Stephen Y Lai, Jeffrey N Myers, Heath D Skinner, Cristian Coarfa, Kwangwon Lee, Antrix Jain, Anna Malovannaya, Mitchell J Frederick, Vlad C Sandulache

Faculty, Staff and Student Publications

Background: Exposomes are critical drivers of carcinogenesis. However, how they modulate tumor behavior remains unclear. Extensive clinical data show cigarette smoke to be a key exposome that promotes aggressive tumors, higher rates of metastasis, reduced response to chemoradiotherapy, and suppressed anti-tumor immunity. We sought to determine whether smoke itself can modulate aggressive tumor behavior in head and neck squamous cell carcinoma (HNSCC) through reprogramming of the cellular reductive state.

Methods: Using established human and murine HNSCC cell lines and syngeneic mouse models, we utilized conventional western blotting, steady state and flux metabolomics, RNA sequencing, quantitative proteomics and flow cytometry to …


Longitudinal Changes In Aerodigestive Responses To Varying Nipple Properties In Infant Pigs, François D H Gould, Christopher Mayerl, Khaled Adjerid, Jessica Reibel, Nichole Charles, Chloe Edmonds, Rebecca Z German Mar 2025

Longitudinal Changes In Aerodigestive Responses To Varying Nipple Properties In Infant Pigs, François D H Gould, Christopher Mayerl, Khaled Adjerid, Jessica Reibel, Nichole Charles, Chloe Edmonds, Rebecca Z German

Rowan-Virtua School of Osteopathic Medicine Departmental Research

Coordination of respiration and swallowing is critical for survival in infant mammals and changes throughout infant maturation. Infants show sensorimotor feeding responses to changes in physical properties of nipples. Commercial nipples are promoted as improving aerodigestive coordination. However, it is unknown how nipple properties influence coordination of respiration and swallowing. Furthermore, how infant-nipple interactions change throughout maturation is not well understood. We designed and manufactured four silicone nipples of the same shape that varied in two parameters: nipple opening diameter and nipple stiffness. We used our validated infant pig model to test the impact of nipple parameters on aerodigestive coordination …


Detection Of Alteration In Carotid Artery Volumetry Using Standard-Of-Care Computed Tomography Surveillance Scans Following Unilateral Radiation Therapy For Early-Stage Tonsillar Squamous Cell Carcinoma Survivors: A Cross-Sectional Internally-Matched Carotid Isodose Analysis, Efstratios Koutroumpakis, Mohamed A Naser, Abdallah Sherif Radwan Mohamed, Salman A Eraj, Andrea Jarre, Jay C Shiao, Mona Kamal, Subha Perni, Jack P Phan, William H Morrison, Steven J Frank, G Brandon Gunn, Adam S Garden, Anita Deswal, Jun-Ichi Abe, David I Rosenthal, Elie Mouhayar, Clifton D Fuller Mar 2025

Detection Of Alteration In Carotid Artery Volumetry Using Standard-Of-Care Computed Tomography Surveillance Scans Following Unilateral Radiation Therapy For Early-Stage Tonsillar Squamous Cell Carcinoma Survivors: A Cross-Sectional Internally-Matched Carotid Isodose Analysis, Efstratios Koutroumpakis, Mohamed A Naser, Abdallah Sherif Radwan Mohamed, Salman A Eraj, Andrea Jarre, Jay C Shiao, Mona Kamal, Subha Perni, Jack P Phan, William H Morrison, Steven J Frank, G Brandon Gunn, Adam S Garden, Anita Deswal, Jun-Ichi Abe, David I Rosenthal, Elie Mouhayar, Clifton D Fuller

Faculty, Staff and Student Publications

Aim: This study leveraged standard-of-care CT scans of patients receiving unilateral radiotherapy (RT) for early tonsillar cancer to detect volumetric changes in the carotid arteries, and determine whether there is a dose-response relationship.

Methods: Disease-free cancer survivors (>3 months since therapy and age > 18 years) treated with intensity modulated RT for early (T1-2, N0-2b) tonsillar cancer with pre- and post-therapy contrast-enhanced CT scans available were included. Patients treated with definitive surgery, bilateral RT, or additional RT before the post-RT CT scan were excluded. Isodose lines from treatment plans were projected onto both scans, facilitating the delineation of carotid artery …


Investigating The Relationship Between The Circadian Clock, Age, And Lifestyle, Samuel Park, Amaka Eziakonwa, Amega Nguyen, Madison Payne, Erich Stahmer, Alexis Salinas, Payson Broome, Angel Oliver, Christian Mccormick, Jasmyn Brown, Julie A. Zacharias-Simpson, Jutta Ward, Deborah Bell-Pedersen Feb 2025

Investigating The Relationship Between The Circadian Clock, Age, And Lifestyle, Samuel Park, Amaka Eziakonwa, Amega Nguyen, Madison Payne, Erich Stahmer, Alexis Salinas, Payson Broome, Angel Oliver, Christian Mccormick, Jasmyn Brown, Julie A. Zacharias-Simpson, Jutta Ward, Deborah Bell-Pedersen

Annual Research Symposium

This poster presentation aims to understand how circadian clock strength and phase are affected by age and lifestyle. By analyzing changes in physiological rhythms, the study seeks to develop strategies for promoting healthy aging by optimizing circadian function.


Tracking The Effects Of Time Zone Shift On An Individual’S Circadian Rhythm, Amaka Eziakonwa, Erich Stahmer, Amega Nguyen, Samuel Park, Madison Payne, Alexis Salinas, Deborah Bell-Pedersen, Julie A. Zacharias-Simpson Feb 2025

Tracking The Effects Of Time Zone Shift On An Individual’S Circadian Rhythm, Amaka Eziakonwa, Erich Stahmer, Amega Nguyen, Samuel Park, Madison Payne, Alexis Salinas, Deborah Bell-Pedersen, Julie A. Zacharias-Simpson

Annual Research Symposium

This poster presentation aims to understand how a rapid time-zone change can affect an individual’s circadian rhythms. By quantifying changes in physiological rhythms, the study seeks to develop targeted therapeutic interventions to mitigate the negative effects of jetlag.


Can We Eliminate The Negative Consequences Of Circadian Desynchronization Caused By Night Shift Work By Using A Light Therapy Lamp To Simulate A Sunset?, Amega Nguyen, Madison Payne, Amaka Eziakonwa, Erich Stahmer, Alexis Salinas, Samuel Park, Julie A. Zacharias-Simpson, Deborah Bell-Pedersen Feb 2025

Can We Eliminate The Negative Consequences Of Circadian Desynchronization Caused By Night Shift Work By Using A Light Therapy Lamp To Simulate A Sunset?, Amega Nguyen, Madison Payne, Amaka Eziakonwa, Erich Stahmer, Alexis Salinas, Samuel Park, Julie A. Zacharias-Simpson, Deborah Bell-Pedersen

Annual Research Symposium

This poster aims to understand the relationship between desynchronosis of circadian rhythms and night-shift work and how light therapy can mitigate some of the issues of desynchronosis. This study seeks to develop therapies for disrupted circadian rhythms from night-ship works.


Transcranial Magnetic Stimulation As A Treatment Modality For Functional Bowel Disorder And Irritable Bowel Syndrome And Possible Correlations With The Gut-Brain Axis: A Review, Lauren Draper, Devin Pfister, Ethan Zaugg Feb 2025

Transcranial Magnetic Stimulation As A Treatment Modality For Functional Bowel Disorder And Irritable Bowel Syndrome And Possible Correlations With The Gut-Brain Axis: A Review, Lauren Draper, Devin Pfister, Ethan Zaugg

Annual Research Symposium

Functional Bowel Disorders (FBD), including Irritable Bowel Syndrome (IBS), are highly prevalent gastrointestinal conditions classified as Disorders of Gut-Brain Interactions (DGBIs) under the Rome IV criteria. These conditions, marked by abdominal pain, altered bowel habits, and significant psychological comorbidities, present substantial challenges in both diagnosis and treatment. Conventional therapies primarily target gut-centric mechanisms but often yield limited efficacy, underscoring the need for approaches that account for the complex interplay of the gut-brain axis in DGBI pathophysiology.


Notch3 Deletion Regulates Hiv-1 Gene Expression And Systemic Inflammation To Ameliorate Chronic Kidney Disease, Mackenzie Thornton, Nicole Sommer, Mercedes Mcgonigle, Anil Kumar Ram, Sireesha Yerrathota, Henrietta Ehirim, Aakriti Chaturvedi, Johnny Dinh Phan, Anubhav Chakraborty, V. Praveen Chakravarthi, Sumedha Gunewardena, Mudit Tyagi, Jaya Talreja, Tao Wang, Pravin Singhal, Pamela V. Tran, Timothy A. Fields, Patricio E. Ray, Navneet K. Dhillon, Madhulika Sharma Feb 2025

Notch3 Deletion Regulates Hiv-1 Gene Expression And Systemic Inflammation To Ameliorate Chronic Kidney Disease, Mackenzie Thornton, Nicole Sommer, Mercedes Mcgonigle, Anil Kumar Ram, Sireesha Yerrathota, Henrietta Ehirim, Aakriti Chaturvedi, Johnny Dinh Phan, Anubhav Chakraborty, V. Praveen Chakravarthi, Sumedha Gunewardena, Mudit Tyagi, Jaya Talreja, Tao Wang, Pravin Singhal, Pamela V. Tran, Timothy A. Fields, Patricio E. Ray, Navneet K. Dhillon, Madhulika Sharma

Center for Translational Medicine Faculty Papers

Anti-retroviral therapy (ART) has decreased human immunodeficiency virus (HIV)-1-associated morbidity. However, despite ART, immune cells remain latently infected, leading to chronic inflammation and HIV-1-associated comorbidities. New strategies are needed to target viral proteins and inflammation. We found activation of Notch3 in renal cells of the HIV-1 transgenic mouse model (HIV-Tg26) and in patients with HIV-associated nephropathy. We hypothesized that targeting NOTCH3 activation constitutes an effective therapy for HIV-related chronic kidney disease. We generated HIV-Tg26 mice with Notch3 knocked out (Tg-N3KO). Compared to HIV-Tg26 mice at 3 months, Tg-N3KO mice showed a marked reduction in renal injury, skin lesions and mortality …


Optimizing Decision-Making In A Cerebral Palsy Model Using Reinforcement Learning, Richard Ampah Jan 2025

Optimizing Decision-Making In A Cerebral Palsy Model Using Reinforcement Learning, Richard Ampah

Pitzer Senior Theses

This study presents an original interdisciplinary investigation into how reinforcement learning (RL) can model motor and cognitive defects and potentially improve motor and cognitive functions in individuals with cerebral palsy (CP), a non-progressive neurological disorder that impairs movement and adaptability. Integrating computational neuroscience and machine learning, the research applies policy gradient methods and Markov Decision Processes (MDPs) to simulate adaptive learning in agents with and without CP-related constraints.

The central aim is to compare the cumulative rewards of optimal policies, derived from value iteration, and human-like learning policies using the REINFORCE algorithm, both with and without the Bellman baseline. The …


Leveraging Clinical Standards To Improve The Translational Relevance Of Therapies For Experimental Spinal Cord Injury, Aaron L. Silverstein Jan 2025

Leveraging Clinical Standards To Improve The Translational Relevance Of Therapies For Experimental Spinal Cord Injury, Aaron L. Silverstein

Theses and Dissertations--Neuroscience

Efforts to improve treatment of spinal cord injury (SCI) often use animals to develop effective therapeutics, intending to improve the survival and the quality of life of persons with SCI. Over half of all SCIs in the United States occur at the cervical level and often cause locomotor deficits and life-threatening breathing dysfunction. Thus, my dissertation is focused on this important patient population.

After beginning with a description of translational research and surveying SCI from a clinical standpoint, I turned to describe experimental models of cervical SCI and more detailed neuroimmunological findings relevant to my work. Then, I conducted a …


Fabricating Silver-Ceria Polymer Nanocomposite Scaffolds For Biomedical Therapeutic Applications, Shreya S. Pawar Jan 2025

Fabricating Silver-Ceria Polymer Nanocomposite Scaffolds For Biomedical Therapeutic Applications, Shreya S. Pawar

Honors Undergraduate Theses

Improper healing of bone fractures and limited regeneration of bone following bone tumor resection remain a prevalent complication worldwide. Long-term effects of this include joint instability, limited movement, and arthritis. Bone infections (osteomyelitis), reactive oxygen species (ROS) generation via excessive inflammation, and underlying conditions such as osteoporosis can contribute to suboptimal bone tissue regeneration. ROS accumulation stimulates osteoblast apoptosis, while promoting osteoclast differentiation. These processes inhibit mineralization and osteogenesis. Conventional therapeutics involve the utilization of drugs and bone grafts. However, these approaches pose limitations and can result in subsequent complications. Microbial infections, ROS accumulation, and excessive inflammations are factors that …


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 Dec 2024

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 …


Cocaine-Induced Dna-Dependent Protein Kinase Relieves Rnap Ii Pausing By Promoting Trim28 Phosphorylation And Rnap Ii Hyperphosphorylation To Enhance Hiv Transcription, Adhikarimayum Lakhikumar Sharma, Priya Tyagi, Meenata Khumallambam, Mudit Tyagi Nov 2024

Cocaine-Induced Dna-Dependent Protein Kinase Relieves Rnap Ii Pausing By Promoting Trim28 Phosphorylation And Rnap Ii Hyperphosphorylation To Enhance Hiv Transcription, Adhikarimayum Lakhikumar Sharma, Priya Tyagi, Meenata Khumallambam, Mudit Tyagi

Center for Translational Medicine Faculty Papers

Drug abuse continues to pose a significant challenge in HIV control efforts. In our investigation, we discovered that cocaine not only upregulates the expression of the DNA-dependent protein kinase (DNA-PK) but also augments DNA-PK activation by enhancing its phosphorylation at S2056. Moreover, DNA-PK phosphorylation triggers the higher localization of the DNA-PK into the nucleus. The finding that cocaine increases the nuclear localization of the DNA-PK provides further support to our observation of enhanced DNA-PK recruitment at the HIV long terminal repeat (LTR) following cocaine exposure. By activating and facilitating the nuclear localization of the DNA-PK, cocaine effectively orchestrates multiple stages …


Avaren-Fc, A Novel Immunotherapeutic, Recruits Nk Cells In B16f10 Melanoma Tumor Tissue, Sreevatsa Vemuri, Katarina L Mayer, Nobuyuki Matoba Nov 2024

Avaren-Fc, A Novel Immunotherapeutic, Recruits Nk Cells In B16f10 Melanoma Tumor Tissue, Sreevatsa Vemuri, Katarina L Mayer, Nobuyuki Matoba

The Cardinal Edge

Melanoma is the fifth most common cancer in the US, with limited effective immunotherapeutic options available for patients. Avaren-Fc (AvFc) is a novel experimental immunotherapeutic agent with a unique “lectibody” property. It is capable of targeting cancer cells through the selective recognition of high mannose glycans, which are aberrantly overrepresented on the surface of malignant cells. Upon binding to cancer cells, AvFc can interact with circulating effector immune cells equipped with Fc receptors, such as natural killer (NK) cells to induce antibody-dependent cell-mediated cytotoxicity (ADCC) and kill the cancer cells. Previous work has shown that AvFc effectively induces ADCC activity …


Genetic Knock-In Of Eif2ak3 Variants Reveals Differences In Perk Activity In Mouse Liver And Pancreas Under Endoplasmic Reticulum Stress, Shivesh Ghura, Noah R. Beratan, Xinglong Shi, Elena Alvarez-Periel, Sarah E. Bond Newton, Cagla Akay-Espinoza, Kelly L. Jordan-Sciutto Oct 2024

Genetic Knock-In Of Eif2ak3 Variants Reveals Differences In Perk Activity In Mouse Liver And Pancreas Under Endoplasmic Reticulum Stress, Shivesh Ghura, Noah R. Beratan, Xinglong Shi, Elena Alvarez-Periel, Sarah E. Bond Newton, Cagla Akay-Espinoza, Kelly L. Jordan-Sciutto

Farber Institute for Neuroscience Staff Papers and Presentations

Common single-nucleotide variants (SNVs) of eukaryotic translation initiation factor 2 alpha kinase 3 (EIF2AK3) slightly increase the risk of disorders in the periphery and the central nervous system. EIF2AK3 encodes protein kinase RNA-like endoplasmic reticulum kinase (PERK), a key regulator of ER stress. Three exonic EIF2AK3 SNVs form the PERK-B haplotype, which is present in 28% of the global population. Importantly, the precise impact of these SNVs on PERK activity remains elusive. In this study, we demonstrate that PERK-B SNVs do not alter PERK expression or basal activity in vitro and in the novel triple knock-in mice expressing the exonic …


Proteomic Profile Of The Icam1 Pk56m Hfpef Risk Variant, Pedro Giro, Mallory Filipp, Michael J Zhang, Ethan D Moser, Edward B Thorp, Prarthana J Dalal, Ravi V Shah, Patrick T Ellinor, Jonathan W Cunningham, Sean J Jurgens, Arjun Sinha, Laura Rasmussen-Torvik, Jorge Kizer, Kent D Taylor, Philip Greenland, Bruce M Psaty, Russell P Tracy, Lin Yee Chen, Amil M Shah, Bing Yu, Sanjiv J Shah, Ravi B Patel Sep 2024

Proteomic Profile Of The Icam1 Pk56m Hfpef Risk Variant, Pedro Giro, Mallory Filipp, Michael J Zhang, Ethan D Moser, Edward B Thorp, Prarthana J Dalal, Ravi V Shah, Patrick T Ellinor, Jonathan W Cunningham, Sean J Jurgens, Arjun Sinha, Laura Rasmussen-Torvik, Jorge Kizer, Kent D Taylor, Philip Greenland, Bruce M Psaty, Russell P Tracy, Lin Yee Chen, Amil M Shah, Bing Yu, Sanjiv J Shah, Ravi B Patel

Faculty, Staff and Student Publications

A common missense variant in ICAM1 among African American individuals (rs5491; pK56M) has been associated with risk of heart failure with preserved ejection fraction (HFpEF), but the pathways that lead to HFpEF among those with this variant are not clear. In this analysis of 92 circulating proteins and their associated networks, we identified 7 circulating inflammatory proteins associated with rs5491 among >600 African American individuals. Using weighted coexpression network analysis, 3 protein networks were identified, one of which was associated with rs5491. This protein network was most highly represented by members of the tumor necrosis receptor superfamily. The rs5491 variant …


Utilizing Thalamic Deep Brain Stimulation For An Electronic Seizure Diary In A Definite Sudden Unexpected Death In Epilepsy Case, Surya Suresh, Yash Vakilna, Vladimir Vashin, Samden Lhatoo, Sandipan Pati Sep 2024

Utilizing Thalamic Deep Brain Stimulation For An Electronic Seizure Diary In A Definite Sudden Unexpected Death In Epilepsy Case, Surya Suresh, Yash Vakilna, Vladimir Vashin, Samden Lhatoo, Sandipan Pati

Faculty, Staff and Student Publications

Objective: Sudden unexpected death in epilepsy (SUDEP) is a serious threat to individuals with intractable epilepsies, contributing to premature mortality. Understanding the elusive pathophysiological mechanisms of SUDEP, especially in cases without observable terminal events, remains a crucial area for investigation. This study aimed to shed light on the burden of epileptiform activity preceding SUDEP by utilizing an automated electronic seizure diary derived from a sensing-enabled thalamic deep brain stimulator (DBS).

Methods: Herein, we present the case of a 57-year-old man afflicted with intractable multifocal epilepsy secondary to cortical dysplasia and encephalomalacia resulting from severe traumatic brain injury. Despite an initial …


Emerin Deficiency Drives Mcf7 Cells To An Invasive Phenotype, Emily Hansen, Christal Rolling, Matthew Wang, James M Holaska Aug 2024

Emerin Deficiency Drives Mcf7 Cells To An Invasive Phenotype, Emily Hansen, Christal Rolling, Matthew Wang, James M Holaska

Rowan-Virtua School of Osteopathic Medicine Departmental Research

During metastasis, cancer cells traverse the vasculature by squeezing through very small gaps in the endothelium. Thus, nuclei in metastatic cancer cells must become more malleable to move through these gaps. Our lab showed invasive breast cancer cells have 50% less emerin protein resulting in smaller, misshapen nuclei, and higher metastasis rates than non-cancerous controls. Thus, emerin deficiency was predicted to cause increased nuclear compliance, cell migration, and metastasis. We tested this hypothesis by downregulating emerin in noninvasive MCF7 cells and found emerin knockdown causes smaller, dysmorphic nuclei, resulting in increased impeded cell migration. Emerin reduction in invasive breast cancer …


Structural Basis For A Polθ Helicase Small-Molecule Inhibitor Revealed By Cryo-Em, Fumiaki Ito, Ziyuan Li, Leonid Minakhin, Gurushankar Chandramouly, Mrityunjay Tyagi, Robert Betsch, John J. Krais, Bernadette Taberi, Umeshkumar Vekariya, Marissa L Calbert, Tomasz Skorski, Neil Johnson, Xiaojiang S. Chen, Richard T. Pomerantz Aug 2024

Structural Basis For A Polθ Helicase Small-Molecule Inhibitor Revealed By Cryo-Em, Fumiaki Ito, Ziyuan Li, Leonid Minakhin, Gurushankar Chandramouly, Mrityunjay Tyagi, Robert Betsch, John J. Krais, Bernadette Taberi, Umeshkumar Vekariya, Marissa L Calbert, Tomasz Skorski, Neil Johnson, Xiaojiang S. Chen, Richard T. Pomerantz

Kimmel Cancer Center Papers, Presentations, and Grand Rounds

DNA polymerase theta (Polθ) is a DNA helicase-polymerase protein that facilitates DNA repair and is synthetic lethal with homology-directed repair (HDR) factors. Thus, Polθ is a promising precision oncology drug-target in HDR-deficient cancers. Here, we characterize the binding and mechanism of action of a Polθ helicase (Polθ-hel) small-molecule inhibitor (AB25583) using cryo-EM. AB25583 exhibits 6 nM IC50 against Polθ-hel, selectively kills BRCA1/2-deficient cells, and acts synergistically with olaparib in cancer cells harboring pathogenic BRCA1/2 mutations. Cryo-EM uncovers predominantly dimeric Polθ-hel:AB25583 complex structures at 3.0-3.2 Å. The structures reveal a binding-pocket deep inside the helicase central-channel, which underscores the high specificity …


The Impact Of Minimally Processed High Fat Meals On Postprandial Glucose, Lipids And Metabolic Index In Pre-Diabetics, Oluwafemi Ayoola Aug 2024

The Impact Of Minimally Processed High Fat Meals On Postprandial Glucose, Lipids And Metabolic Index In Pre-Diabetics, Oluwafemi Ayoola

Masters Theses, 2020-current

There is an increasing global prevalence of prediabetes, commonly diagnosed through increased fasting glucose (GLU). Elevated levels of GLU and triglycerides (TRG) have also been linked with more severe diabetes-related complications. Even a single high-fat meal (HFM) may result in adverse metabolic outcomes, in healthy individuals and prediabetics, which are a better predictor of disease risk than measuring fasting levels. Therefore, reducing these metabolic outcomes after a typical HFM often consumed in the Western diet is of critical importance to reduce chronic disease risk. The aim is to determine whether incorporating polyphenols and dietary fiber into an HFM would reduce …


Molecular Mechanism Of Bitter Taste Receptor Agonist-Mediated Relaxation Of Airway Smooth Muscle, Stanley Conaway, Weiliang Huang, Miguel A. Hernandez-Lara, Maureen A. Kane, Raymond B. Penn, Deepak A. Deshpande Jul 2024

Molecular Mechanism Of Bitter Taste Receptor Agonist-Mediated Relaxation Of Airway Smooth Muscle, Stanley Conaway, Weiliang Huang, Miguel A. Hernandez-Lara, Maureen A. Kane, Raymond B. Penn, Deepak A. Deshpande

Center for Translational Medicine Faculty Papers

G-protein-coupled receptors (GPCRs) belonging to the type 2 taste receptors (TAS2Rs) family are predominantly present in taste cells to allow the perception of bitter-tasting compounds. TAS2Rs have also been shown to be expressed in human airway smooth muscle (ASM), and TAS2R agonists relax ASM cells and bronchodilate airways despite elevating intracellular calcium. This calcium “paradox” (calcium mediates contraction by pro-contractile Gq-coupled GPCRs) and the mechanisms by which TAS2R agonists relax ASM remain poorly understood. To gain insight into pro-relaxant mechanisms effected by TAS2Rs, we employed an unbiased phosphoproteomic approach involving dual-mass spectrometry to determine differences in the phosphorylation of contractile-related …


In Search Of The Locus Coeruleus: Guidelines For Identifying Anatomical Boundaries And Electrophysiological Properties Of The Blue Spot In Mice, Fish, Finches, And Beyond, Amelien Vreven, Gary Aston-Jones, Anthony E Pickering, Gina R Poe, Barry Waterhouse, Nelson K Totah Jul 2024

In Search Of The Locus Coeruleus: Guidelines For Identifying Anatomical Boundaries And Electrophysiological Properties Of The Blue Spot In Mice, Fish, Finches, And Beyond, Amelien Vreven, Gary Aston-Jones, Anthony E Pickering, Gina R Poe, Barry Waterhouse, Nelson K Totah

Rowan-Virtua School of Osteopathic Medicine Departmental Research

Our understanding of human brain function can be greatly aided by studying analogous brain structures in other organisms. One brain structure with neurochemical and anatomical homology throughout vertebrate species is the locus coeruleus (LC), a small collection of norepinephrine (NE)-containing neurons in the brainstem that project throughout the central nervous system. The LC is involved in nearly every aspect of brain function, including arousal and learning, which has been extensively examined in rats and nonhuman primates using single-unit recordings. Recent work has expanded into putative LC single-unit electrophysiological recordings in a nonmodel species, the zebra finch. Given the importance of …


Investigating The Role Of The Gut Microbiota On Immune Checkpoint Inhibitor-Mediated Colitis, Taylor Halsey, Robert Jenq May 2024

Investigating The Role Of The Gut Microbiota On Immune Checkpoint Inhibitor-Mediated Colitis, Taylor Halsey, Robert Jenq

Dissertations and Theses (Open Access)

Immune checkpoint inhibitors (ICIs) have been revolutionary in the fight against cancer by recruiting the host immune system as an agent for attack on malignant cells. Unfortunately, immune-related adverse events (irAEs), including ICI-mediated colitis (IMC), are common side effects that result from immune cell mediated damage on healthy tissues. Recent studies have highlighted a role for the gut microbiota in modulating ICI-mediated anti-tumor responses, but less is known regarding how the gut microbiota may impact on irAEs. Considering that the gastrointestinal tract harbors thousands of unique microbial species, many of which are known to modulate the immune system, microbes and …


Cord Blood-Derived Invariant Natural Killer T Cells As A Platform For Allogeneic Chimeric Antigen Receptor Cell Therapy, Maison Grefe May 2024

Cord Blood-Derived Invariant Natural Killer T Cells As A Platform For Allogeneic Chimeric Antigen Receptor Cell Therapy, Maison Grefe

Dissertations and Theses (Open Access)

Chimeric antigen receptor (CAR) T cells have revolutionized the treatment of hematopoietic malignancies achieving >50% complete response rates in numerous refractory/relapsed B cell malignancies. However, there are challenges that hinder CAR-T efficacy and bar the broader use of this therapy in patients. One approach to address these challenges is to create a safe allogeneic CAR cell product by using cells that do not cause graft versus host disease (GvHD). Invariant natural killer T (iNKT) cells are an ideal candidate as they are restricted to the monomorphic CD1d protein in contrast to HLA restricted αβ-T cells and therefore are safe in …


Intraprocedural Versus Initial Follow-Up Minimal Ablative Margin Assessment After Colorectal Liver Metastasis Thermal Ablation: Which One Better Predicts Local Outcomes?, Yuan-Mao Lin, Iwan Paolucci, Jessica Albuquerque Marques Silva, Caleb S O'Connor, Bryan M Fellman, Aaron K Jones, Joshua D Kuban, Steven Y Huang, Zeyad A Metwalli, Kristy K Brock, Bruno C Odisio Apr 2024

Intraprocedural Versus Initial Follow-Up Minimal Ablative Margin Assessment After Colorectal Liver Metastasis Thermal Ablation: Which One Better Predicts Local Outcomes?, Yuan-Mao Lin, Iwan Paolucci, Jessica Albuquerque Marques Silva, Caleb S O'Connor, Bryan M Fellman, Aaron K Jones, Joshua D Kuban, Steven Y Huang, Zeyad A Metwalli, Kristy K Brock, Bruno C Odisio

Faculty, Staff and Student Publications

Objectives: The aim of this study was to investigate the prognostic value of 3-dimensional minimal ablative margin (MAM) quantified by intraprocedural versus initial follow-up computed tomography (CT) in predicting local tumor progression (LTP) after colorectal liver metastasis (CLM) thermal ablation.

Materials and methods: This single-institution, patient-clustered, tumor-based retrospective study included patients undergoing microwave and radiofrequency ablation between 2016 and 2021. Patients without intraprocedural and initial follow-up contrast-enhanced CT, residual tumors, or with follow-up less than 1 year without LTP were excluded. Minimal ablative margin was quantified by a biomechanical deformable image registration method with segmentations of CLMs on intraprocedural preablation …


A Phase I Study Of Docetaxel Plus Synthetic Lycopene In Metastatic Prostate Cancer Patients, Michael B Lilly, Chunli Wu, Yu Ke, Wen-Pin Chen, Adam C Soloff, Kent Armeson, Noriko N Yokoyama, Xiaotian Li, Liankun Song, Ying Yuan, Christine E Mclaren, Xiaolin Zi Mar 2024

A Phase I Study Of Docetaxel Plus Synthetic Lycopene In Metastatic Prostate Cancer Patients, Michael B Lilly, Chunli Wu, Yu Ke, Wen-Pin Chen, Adam C Soloff, Kent Armeson, Noriko N Yokoyama, Xiaotian Li, Liankun Song, Ying Yuan, Christine E Mclaren, Xiaolin Zi

Faculty, Staff and Student Publications

Purpose: Our preclinical studies showed that lycopene enhanced the anti-prostate cancer efficacy of docetaxel in animal models. A phase I trial (NCT0149519) was conducted to identify an optimum dose of synthetic lycopene in combination with docetaxel (and androgen blockade [androgen deprivation therapy, ADT]), and to evaluate its effect on the safety and pharmacokinetics of docetaxel in men with metastatic prostate cancer.

Methods: Subjects were treated with 21-day cycles of 75 mg/m2 docetaxel (and ADT), plus lycopene at 30, 90 or 150 mg/day. A Bayesian model averaging continual reassessment method was used to guide dose escalation. Pharmacokinetics of docetaxel …


Enabling The Clinical Application Of Artificial Intelligence In Genomics: A Perspective Of The Amia Genomics And Translational Bioinformatics Workgroup, Nephi A Walton, Radha Nagarajan, Chen Wang, Murat Sincan, Robert R Freimuth, David B Everman, Derek C Walton, Scott P Mcgrath, Dominick J Lemas, Panayiotis V Benos, Alexander V Alekseyenko, Qianqian Song, Ece Gamsiz Uzun, Casey Overby Taylor, Alper Uzun, Thomas Nate Person, Nadav Rappoport, Zhongming Zhao, Marc S Williams Jan 2024

Enabling The Clinical Application Of Artificial Intelligence In Genomics: A Perspective Of The Amia Genomics And Translational Bioinformatics Workgroup, Nephi A Walton, Radha Nagarajan, Chen Wang, Murat Sincan, Robert R Freimuth, David B Everman, Derek C Walton, Scott P Mcgrath, Dominick J Lemas, Panayiotis V Benos, Alexander V Alekseyenko, Qianqian Song, Ece Gamsiz Uzun, Casey Overby Taylor, Alper Uzun, Thomas Nate Person, Nadav Rappoport, Zhongming Zhao, Marc S Williams

Faculty, Staff and Student Publications

OBJECTIVE: Given the importance AI in genomics and its potential impact on human health, the American Medical Informatics Association-Genomics and Translational Biomedical Informatics (GenTBI) Workgroup developed this assessment of factors that can further enable the clinical application of AI in this space.

PROCESS: A list of relevant factors was developed through GenTBI workgroup discussions in multiple in-person and online meetings, along with review of pertinent publications. This list was then summarized and reviewed to achieve consensus among the group members.

CONCLUSIONS: Substantial informatics research and development are needed to fully realize the clinical potential of such technologies. The development of …


Avaren-Fc, A Novel Immunotherapeutic, Recruits Nk Cells In B16f10 Melanoma Tumor Tissue, Sreevatsa Vemuri, Katarina Mayer, Nobuyuki Matoba Jan 2024

Avaren-Fc, A Novel Immunotherapeutic, Recruits Nk Cells In B16f10 Melanoma Tumor Tissue, Sreevatsa Vemuri, Katarina Mayer, Nobuyuki Matoba

Posters-at-the-Capitol

Melanoma is the fifth most common cancer in the US, with limited effective immunotherapeutic options available for patients. Avaren-Fc (AvFc) is a novel experimental immunotherapeutic agent with a unique “lectibody” property. It is capable of targeting cancer cells through the selective recognition of high mannose glycans, which are aberrantly overrepresented on the surface of malignant cells. AvFc can interact with circulating effector immune cells equipped with Fc receptors, such as natural killer (NK) cells to induce antibody-dependent cell-mediated cytotoxicity (ADCC) and kill cancer cells. Previous work has shown that AvFc effectively induces ADCC activity against B16F10 cancer cells in vitro …


Modulating The Mtor Pathway Using Inducible Retrogradely Transported Aavs As A Novel Approach To Improve Motor Recovery In Spinal Cord Injury, Christopher Bosse-Joseph Jan 2024

Modulating The Mtor Pathway Using Inducible Retrogradely Transported Aavs As A Novel Approach To Improve Motor Recovery In Spinal Cord Injury, Christopher Bosse-Joseph

Theses and Dissertations--Medical Sciences

Spinal cord injury poses multiple regeneration barriers, including neuronal-intrinsic and extrinsic factors. Overcoming these barriers has stood as a longstanding challenge in neuroscience. A well-studied mechanism to promote spinal cord regeneration and locomotor recovery is activating the PI3K/mTOR pathway by knocking out phosphatase and tensin homolog protein (PTEN). PTEN knockout (PTEN-KO) studies have traditionally used adeno-associated virus (AAV) viral vectors to improve functional recovery. The use of traditional AAV serotypes to induce PTEN-KO has shown promise to improve functional recovery in rodent models; however, these approaches show significant limitations for translational utility. Firstly, the use of traditional AAV serotypes to …