Life Sciences Commons^™

Multi-Institutional Study On Image Quality For A Novel Cbct Solution On O-Ring Linac, Luis Agulles-Pedrós, R Lee Macdonald, Amanda Jean Cherpak, Nayha Dixit, Lei Dong, Tianyu Zhao, Kundan Thind, Anthony Doemer, Boon-Keng Teo, Shiqin Su, Alexander Moncion, James L Robar

Faculty, Staff and Student Publications

INTRODUCTION: This work presents a multi-institutional study on image quality provided by a novel cone beam computed tomography (CBCT). The main goal is to investigate the consistency of imaging performance across multiple institutions.

METHODS: Phantoms for measuring relative electron density (RED) and image quality were sent to six institutions for imaging on Ethos and Halcyon units equipped with HyperSight CBCT. The imaging protocols included tube potential from 100 to 140 kVp and exposure from 80 to 800 mAs. Imaging performance was evaluated with regard to RED versus Hounsfield units (HU), uniformity, contrast-to-noise ratio (CNR), slice thickness, circular symmetry, modulation transfer …

Encoding 3d Information In 2d Feature Maps For Brain Ct-Angiography, Uma M Lal-Trehan Estrada, Sunil Sheth, Arnau Oliver, Xavier Lladó, Luca Giancardo

Faculty, Staff and Student Publications

We propose learnable 3D pooling (L3P), a CNN module designed to compress 3D information into 2D feature maps using anisotropic convolutions and unidirectional max pooling. Specifically, we used L3P followed by a 2D network to generate predictions from 3D brain CT-Angiography (CTA) in the context of large vessel occlusion (LVO). To further demonstrate its versatility, we extended its application to 3D brain MRI analysis for brain age prediction. First, we designed an experiment to classify the LVO-affected hemisphere (left or right), projecting the input CTA into the sagittal plane, which allowed to assess the ability of L3P to encode the …

Novel Treatment-Specific Causal Biomarkers For Colorectal Cancer By Omics Integration, Akram Yazdani, Azam Yazdani, Raul Mendez-Giraldez, Gianluigi Pillonetto, Esmat Samiei, Reza Hadi, Heinz-Josef Lenz, Alan P Venook, Ahmad Samiei, Andrew B Nixon, Joseph A Lucci, Scott Kopetz, Monica M Bertagnolli, Federico Innocenti

Faculty, Staff and Student Publications

While monoclonal antibody-based targeted therapies have substantially improved progression-free survival in cancer patients, the variability in individual responses poses a significant challenge in patient care. Therefore, identifying cancer subtypes and their associated biomarkers is required for assigning effective treatment. In this study, we integrated genotype and pre-treatment tissue RNA-seq data and identified biomarkers causally associated with the overall survival (OS) of colorectal cancer (CRC) patients treated with either cetuximab or bevacizumab. We performed enrichment analysis for specific consensus molecular subtypes (CMS) of CRC and evaluated differential expression of identified genes using paired tumor and normal tissue from an external cohort. …

Home-Based Transcranial Direct Current Stimulation For Major Depressive Disorder: 6-Month Follow-Up From Randomised Sham-Controlled Trial And Open-Label Treatment Phases, Rachel D Woodham, Sudhakar Selvaraj, Nahed Lajmi, Harriet Hobday, Gabrielle Sheehan, Ali-Reza Ghazi-Noori, Peter J Lagerberg, Rodrigo Machado-Vieira, Jair C Soares, Allan H Young, Cynthia H Y Fu

Faculty, Staff and Student Publications

Transcranial direct current stimulation (tDCS) is a potential home-based treatment for major depressive disorder (MDD). In our double-blind randomised controlled trial (RCT) (n = 174; UK and USA), a 10-week course of home-based tDCS demonstrated clinical efficacy (clinical response: 58.3 % active treatment arm and 37.8 % sham (p = 0.017). tDCS was delivered in a bifrontal montage, with anode over left dorsolateral prefrontal cortex (DLPFC) and cathode over right DLPFC. Each session was 30 min, with active stimulation at 2 mA and sham at 0 mA, incorporating brief ramp-up and ramp-down phased. Following the 10-week RCT, all participants were …

Cll Cell-Derived Exosomes Alter The Immune And Hematopoietic Systems, Ivo Veletic, David M Harris, Uri Rozovski, Maria Teresa S Bertilaccio, George A Calin, Koichi Takahashi, Ping Li, Zhiming Liu, Taghi Manshouri, Rares-Constantin Drula, Ken Furudate, Muharrem Muftuoglu, Anwar Hossain, William G Wierda, Michael J Keating, Zeev Estrov

Faculty, Staff and Student Publications

The origins of immunosuppression, neutropenia, and anemia in patients with chronic lymphocytic leukemia (CLL) are not fully understood. Because in patients with CLL, circulating exosomes, which participate in cell-to-cell interactions, are CLL cell-derived, we examined whether those exosomes contribute to abnormal features of this disease. Our data revealed that CLL cell-derived exosomes engulfed by healthy donors’ monocytes, fibrocytes, and lymphocytes altered target-cell gene and protein expression and suppressed normal hematopoiesis. CLL cell-derived exosomes increased normal monocytes’ CD14 and CD16 expression such that it mimicked the accessory cell profile and upregulated T cells’ checkpoint PD-1 and CD160 protein levels, potentially reducing …

International Expert-Based Consensus Definition, Classification Criteria, And Minimum Data Elements For Osteoradionecrosis Of The Jaw: An Interdisciplinary Modified Delphi Study, Amy C Moreno, Erin E Watson, Laia Humbert-Vidan, Douglas E Peterson, Lisanne V Van Dijk, Teresa Guerrero Urbano, Lisa Van Den Bosch, Andrew J Hope, Matthew S Katz, Frank J P Hoebers, Ruth A Aponte Wesson, James E Bates, Paolo Bossi, Adeyinka F Dayo, Mélanie Doré, Eduardo Rodrigues Fregnani, Thomas J Galloway, Daphna Y Gelblum, Issa A Hanna, Christina E Henson, Sudarat Kiat-Amnuay, Anke Korfage, Nancy Y Lee, Carol M Lewis, Charlotte Duch Lynggaard, Antti A Mäkitie, Marco Magalhaes, Yvonne M Mowery, Carles Muñoz-Montplet, Jeffrey N Myers, Ester Orlandi, Jaymit Patel, Jillian M Rigert, Deborah Saunders, Jonathan D Schoenfeld, Ugur Selek, Efsun Somay, Vinita Takiar, Juliette Thariat, Gerda M Verduijn, Alessandro Villa, Nicholas S West, Max J H Witjes, Alex M Won, Mark E Wong, Christopher M K L Yao, Simon W Young, Kamal Al-Eryani, Carly E A Barbon, Doke J M Buurman, François J Dieleman, Theresa M Hofstede, Abdul Ahad Khan, Adegbenga O Otun, John C Robinson, Lauren Hum, Jorgen Johansen, Rajesh Lalla, Alexander Lin, Vinod Patel, Richard J Shaw, Mark S Chambers, Daniel Ma, Mabi Singh, Noam Yarom, Abdallah Sherif Radwan Mohamed, Katherine A Hutcheson, Stephen Y Lai, Clifton David Fuller

Faculty, Staff and Student Publications

Purpose: Osteoradionecrosis of the jaw (ORNJ) is a severe iatrogenic disease characterized by bone death after radiation therapy to the head and neck. With >9 published definitions and at least 16 classification systems, the true incidence and severity of ORNJ are obscured by lack of a standard for disease definition and severity assessment, leading to inaccurate estimation of incidence, reporting ambiguity, and likely underdiagnosis worldwide. This study aimed to achieve consensus on an explicit definition and phenotype of ORNJ and related precursor states through data standardization to facilitate effective diagnosis, monitoring, and multidisciplinary management of ORNJ.

Methods and materials: The …

A Virtual Wellness Program To Enhance Well-Being For Pediatric Oncology Staff During The Covid-19 Pandemic, Karen M Moody, Maria Chang Swartz, Zachary Gresham, Martha Askins, Laura Cahalan, Christine Geistkemper, Amy Heaton, Ruitao Lin, Melissa Melo, Alakh Rajan, Madeline Smith, Priti Tewari, Keyana Williams, Cheng-Han Yang, Rhonda Robert

Faculty, Staff and Student Publications

In response to the COVID-19 global health crisis and mandated social isolation, Pediatric leadership at MD Anderson Children's Cancer Hospital was concerned for the psychological impact on its workforce and encouraged wellness programming. A grassroots wellness taskforce was assembled for the Division of Pediatrics. The task force's primary mission was to promote the well-being of clinicians and non-clinical staff members through a broadly accessible, sustainable, and effective virtual wellness program. Guided by the Stanford Model for Professional Fulfillment, a virtual program entitled, "Weekly Wellness Webex" for Pediatrics staff was launched. Weekly Wellness Webex is a 1-hour live-streamed program with varied …

The Burden Of Burnout: Understanding Its Prevalence And Organizational Drivers In Medical Physics, Deborah Schofield, C Lynn Chevalier, Laurence Court, William Harmsen, Akiva Turner

Faculty, Staff and Student Publications

Background: Burnout is a work-related syndrome characterized by increased levels of emotional exhaustion (EE) and depersonalization (DP) along with decreased levels of personal achievement. In the healthcare setting, higher burnout levels have been associated with negative impacts on personnel, an increased risk of errors, and a decrease in the quality of delivered care.

Purpose: The purpose of this study was to assess the prevalence of burnout among medical physicists working in the United States. Additionally, the impact of personal and organizational features on burnout risk was examined.

Methods: The anonymous survey was distributed to 1962 full members of the American …

Gut Microbiota In Immuno-Oncology: A Practical Guide For Medical Oncologists With A Focus On Antibiotics Stewardship, Arielle Elkrief, Bertrand Routy, Lisa Derosa, Laura Bolte, Jennifer A Wargo, Jennifer L Mcquade, Laurence Zitvogel

Faculty, Staff and Student Publications

The gut microbiota has emerged as a critical determinant of immune checkpoint inhibitor (ICI) efficacy, resistance, and toxicity. Retrospective and prospective studies profiling the taxonomic composition of intestinal microbes of patients treated with ICI have revealed specific gut microbial signatures associated with response. By contrast, dysbiosis, which can be caused by chronic inflammatory processes (such as cancer) or comedications, is a risk factor of resistance to ICI. Recent large-scale meta-analyses have confirmed that antibiotic (ATB) use before or during ICI therapy alters the microbiota repertoire and significantly shortens overall survival, even after adjusting for prognostic factors. These results underscore the …

Building Community Through Data: The Value Of A Researcher Driven Open Science Ecosystem, Meredith C B Adams, Carla M Bann, Emine Ozgur Bayman, Maria Chao, Georgene W Hergenroeder, Charles Knott, Martin A Lindquist, Z David Luo, Rosemarie Martin, Maryann E Martone, John Mccarthy, Micah Mccumber, Sharon B Meropol, Ty A Ridenour, Lissette M Saavedra, Abeed Sarker, Kevin J Anstrom, Wesley K Thompson

Faculty, Staff and Student Publications

No abstract provided.

Fibroblast Dynamics During Mammary Oncogenesis: Senescence, Wnt9a And Beyond, Viktoria Boeker, Raghu Kalluri

Faculty, Staff and Student Publications

Mammary gland fibroblasts are highly plastic and transition through distinct states during development and disease. A new study by Pascual et al (2025) provides a comprehensive single-cell atlas of murine mammary stromal cell hierarchies, revealing dysregulation of progenitor-driven fibroblast lineages in breast cancer and a senescence role of Wnt9a in cancer-associated myofibroblasts.

Multicancer Early Detection Tests At A Crossroads: Commercial Availability Ahead Of Definitive Evidence, Carmen E Guerra, Jennifer Keating Litton, Carolina E Viswanath, A Mark Fendrick

Faculty, Staff and Student Publications

Multicancer early detection tests (MCEDs), sometimes referred to as liquid biopsies, are tests that can screen for multiple cancers by analyzing blood, urine, and other bodily fluids for biomarkers released by cancer cells. These tests have the potential to change the cancer screening paradigm if they are shown to reduce cancer mortality. However, it is not yet known whether MCEDs reduce mortality. Randomized controlled trials, the gold standard for evaluating cancer screening programs, are currently evaluating the effectiveness of MCEDs. However, because cancer-specific and all-cause mortality are end points that can take years to reach, trials are being designed with …

An Enzyme-Linked Immunosorbent Assay (Elisa)-Based Activity Assay For Amp-Activated Protein Kinase (Ampk), Trezze P Nguyen, Shangze Lyu, Yang Liu

Faculty, Staff and Student Publications

AMP-activated protein kinase (AMPK) is the master regulator of cellular and organismal energy homeostasis, playing an essential role in modulating metabolism and other cellular processes. Substantial efforts have been made to develop pharmacological modulators of AMPK activity due to their therapeutic potential against various diseases. Measuring AMPK activity in vitro is a fundamental step for testing AMPK activators and inhibitors. Here, we report an enzyme-linked immunosorbent assay (ELISA)-based AMPK activity assay with simple steps and high sensitivity. This assay offers a robust, in-house alternative to the traditional radioactive methods and other approaches that rely on specialized reagents or commercial kits.

Association Of Sirt6 Expression With Risk Of Pneumonitis Induced By Radiotherapy In Cancer Patients, Fengyuan Yu, Zheng Gong, Yuan Li, Danial F Naseem, Chen Li, Miaowei Wen, Bingying Zhao, Zhezhe Xu, Shanshan Zhang, Rukun Zang, Ailu Wu, Qingxin Han, Shuhui Wu, Hongwei Li, Yipeng Song

Faculty, Staff and Student Publications

Thoracic tumours represent a significant proportion of malignant cancers. While radiotherapy (RT) improves prognosis, it can also lead to side effects such as radiation-induced pneumonitis (RP). Since SIRT6 is involved in DNA repair, energy metabolism and inflammation, this study aims to investigate the expression of SIRT6 in lymphocytes as a potential biomarker and therapeutic target for RP. This study included 170 patients diagnosed with thoracic tumours, all of whom underwent thoracic RT. RP was evaluated and classified as severe RP (SRP) and lower as non-severe RP (NSRP). Analyses were performed using SPSS version 26.0 and the R. Among 170 patients …

Therapeutic Hurdles In Acute Myeloid Leukemia: Leukemic Stem Cells, Inflammation And Immune Dysfunction, Bofei Wang, Patrick K Reville, Hussein A Abbas

Faculty, Staff and Student Publications

Acute myeloid leukemia (AML) is an aggressive and highly heterogeneous hematological malignancy characterized by clonal expansion and differentiation arrest in myeloid progenitor cells. Despite advancements in chemotherapy, allogeneic hematopoietic stem cell transplantation, and post-remission maintenance therapies, the long-term survival remains unsatisfactory with high rates of relapse and refractory. These therapeutic challenges are mediated by multiple factors, including the complexity of the cellular hierarchies in AML, the interaction of leukemic stem cells (LSCs) with the bone marrow niche, inflammation, and immune evasion mechanisms. Further, the absence of specific surface markers that distinguish LSCs from normal hematopoietic stem cells, together with LSCs' …

Clinical Interrogation Of Tp53 Aberrations And Its Impact On Survival In Patients With Myeloid Neoplasms, Jayastu Senapati, Sanam Loghavi, Guillermo Garcia-Manero, Guillin Tang, Tapan Kadia, Nicholas J Short, Hussein A Abbas, Naszrin Arani, Courtney D Dinardo, Gautam Borthakur, Naveen Pemmaraju, Betul Oran, Elizabeth Shpall, Uday Popat, Richard Champlin, Sherry Pierce, Sankalp Arora, Ghayas Issa, Musa Yilmaz, Keyur Patel, Koichi Takahashi, Guillermo Montalban-Bravo, Danielle Hammond, Fadi G Haddad, Farhad Ravandi, Hagop M Kantarjian, Naval G Daver

Faculty, Staff and Student Publications

In myelodysplastic syndrome (MDS) and acute myeloid leukemia (AML) with TP53 aberrations, dissecting the interaction amongst patient, disease and treatment factors are important for therapeutic decisions and prognostication. This retrospective analysis included patients with newly diagnosed MDS (>5% blasts) and AML with TP53 mutation(s) treated at MD Anderson Cancer Center. We factored patient age, TP53 aberration burden, therapy intensity and use of venetoclax in the AML subgroup, and allogeneic hematopoietic stem cell transplantation (HSCT) to interrogate outcomes. TP53 was annotated as high-risk (TP53HR) if >1 mutation, one mutation plus allelic deletion or a single mutation with variant allele frequency …

Egfr Controls Transcriptional And Metabolic Rewiring In Krasg12d Colorectal Cancer, Dana Krauß, Veronica Moreno-Viedma, Emi Adachi-Fernandez, Cristiano De Sá Fernandes, Jakob-Wendelin Genger, Ourania Fari, Bernadette Blauensteiner, Dominik Kirchhofer, Nikolina Bradaric, Valeriya Gushchina, Georgios Fotakis, Thomas Mohr, Ifat Abramovich, Inbal Mor, Martin Holcmann, Andreas Bergthaler, Arvand Haschemi, Zlatko Trajanoski, Juliane Winkler, Eyal Gottlieb, Maria Sibilia

Faculty, Staff and Student Publications

Inhibition of the epidermal growth factor receptor (EGFR) shows clinical benefit in metastatic colorectal cancer (CRC) patients, but KRAS-mutations are known to confer resistance. However, recent reports highlight EGFR as a crucial target to be co-inhibited with RAS inhibitors for effective treatment of KRAS mutant CRC. Here, we investigated the tumor cell-intrinsic contribution of EGFR in KRASG12D tumors by establishing murine CRC organoids with key CRC mutations (KRAS, APC, TP53) and inducible EGFR deletion. Metabolomic, transcriptomic, and scRNA-analyses revealed that EGFR deletion in KRAS-mutant organoids reduced their phenotypic heterogeneity and activated a distinct cancer-stem-cell/WNT signature associated with reduced cell size …

Trem2 Depletion In Pancreatic Cancer Elicits Pathogenic Inflammation And Accelerates Tumor Progression Via Enriching Il-1Β+ Macrophages, Daowei Yang, Xinlei Sun, Hua Wang, Ignacio I Wistuba, Huamin Wang, Anirban Maitra, Yang Chen

Faculty, Staff and Student Publications

Background & aims: Pancreatic ductal adenocarcinoma (PDAC) has a complex tumor microenvironment enriched with tumor-associated macrophages. Triggering receptor expressed on myeloid cells 2 (TREM2) is highly expressed by a subset of macrophages in PDAC. However, the functional role of TREM2 in PDAC progression remains elusive.

Methods: We generated a novel transgenic mouse model (KPPC;Trem2-/-) that enables the genetic depletion of TREM2 in the context of spontaneous PDAC development. Single-cell RNA-sequencing analysis was used to identify changes in the tumor immune microenvironment on TREM2 depletion. We evaluated the impacts of TREM2 depletion on the tumor immune microenvironment to elucidate the functions …

Nlrp3 Inflammasome Activation Expands The Immunosuppressive Myeloid Stroma And Antagonizes The Therapeutic Benefit Of Sting Activation In Glioblastoma, Spencer T Lea, Chao-Hsien Chen, Jun Wei, Ivana William, Inés Lopez Del Castillo, Michael A Curran

Faculty, Staff and Student Publications

Glioblastoma (GBM) is the most common and deadly primary brain malignancy and is clinically refractory to immunotherapy. Active NLRP3 inflammasome signaling and IL-1β secretion have been observed in GBM, and NLRP3-driven myeloid-derived suppressor cell (MDSC) recruitment can mediate cancer immune evasion. Agonists of the cytosolic double-stranded DNA-sensing stimulator of IFN gene (STING) pathway can mediate proinflammatory conversion of cancer MDSCs; however, secretion of the NLRP3 products IL-1β and IL-18 has also been observed in certain myeloid populations following STING activation. In this study, we aimed to determine both the potential mechanistic synergy between STING and NLRP3 agonists, and the effects …

Externally Validated Digital Decision Support Tool For Time-To-Osteoradionecrosis Risk-Stratification Using Right-Censored Multi-Institutional Observational Cohorts, Laia Humbert-Vidan, Serageldin Kamel, Andrew Wentzel, Zaphanlene Kaffey, Moamen Abdelaal, Kyle B Spier, Natalie A West, G Elisabeta Marai, Guadalupe Canahuate, Xinhua Zhang, Melissa M Chen, Kareem A Wahid, Jillian Rigert, Seyedmohammadhossein Hosseinian, Andrew J Schaefer, Kristy K Brock, Mark Chambers, Adegbenga O Otun, Ruth Aponte-Wesson, Vinod Patel, Andrew Hope, Jack Phan, Adam S Garden, Steven J Frank, William H Morrison, Michael T Spiotto, David Rosenthal, Anna Lee, Renjie He, Mohamed A Naser, Erin Watson, Katherine A Hutcheson, Abdallah S R Mohamed, Vlad C Sandulache, Lisanne V Van Dijk, Amy C Moreno, Teresa Guerrero Urbano, Clifton D Fuller, Stephen Y Lai

Faculty, Staff and Student Publications

Background: Existing studies on osteoradionecrosis of the jaw (ORNJ) have primarily used cross-sectional data, assessing risk factors at a single time point. Determining the time-to-event profile of ORNJ has important implications to monitor oral health in head and neck cancer (HNC) long-term survivors.

Methods: Data were retrospectively obtained for a clinical observational cohort of 1129 patients (198 ORNJ cases) with HNC treated with radiotherapy (RT) at The University of Texas MD Anderson Cancer Center. A Weibull Accelerated Failure Time model was trained on previously identified dosimetric, clinical and demographic predictors. External validation was performed using an independent cohort of 265 …

A Plain Language Summary Of Polaris: A Study To Look At Different Doses Of Encorafenib Plus Binimetinib For People With Braf V600-Mutant Melanoma With Brain Metastasis, Alexander M Menzies, Georgina V Long, Amiee Kohn, Hussein Tawbi, Jeffrey Webe, Keith Flaherty, Grant A Mcarthur, Paolo A Ascierto, Yanina Pfluger, Karl Lewis, Katy K Tsai, Omid Hamid, Hans Prenen, Luis Fein, Erjian Wang, Carolin Guenzel, Fan Zhang, Joseph F Kleh, Alessandra Di Pietro, Michael A Davies

Faculty, Staff and Student Publications

What is this summary about?People with a type of melanoma called advanced or metastatic BRAF V600- mutant melanoma, with a change in the BRAF gene, that has spread to the brain have poor outcomes.Current treatments include encorafenib (BRAFTOVI®) and binimetinib (MEKTOVI®). The POLARIS clinical study looked at whether increasing the encorafenib dose would make treatment more effective, with similar side effects, in these patients.The first part of the study, known as the safety lead-in, looked at the side effects of a high dose of encorafenib together with binimetinib. This was followed by a phase 2 part to …

The Potential Benefit Of Encorafenib Plus Cetuximab With Chemotherapy Compared With Standard Of Care In People With Braf V600e-Mutant Metastatic Colorectal Cancer In The Breakwater Study: A Plain Language Summary, Scott Kopetz, Takayuki Yoshino, Eric Van Cutsem, Cathy Eng, Tae Won Kim, Harpreet Singh Wasan, Jayesh Desai, Fortunato Ciardiello, Rona Yaeger, Timothy S Maughan, Elena Beyzarov, Xiaoxi Zhang, Graham Ferrier, Xiaosong Zhang, Josep Tabernero

Faculty, Staff and Student Publications

No abstract provided.

A Plain Language Summary Of The Molecular Changes In The Tumors Of People With Braf V600e-Mutant Colorectal Cancer In The Beacon Study, Scott Kopetz, Danielle A Murphy, Jie Pu, Fortunato Ciardiello, Jayesh Desai, Eric Van Cutsem, Harpreet Singh Wasan, Takayuki Yoshino, Hedieh Saffari, Xiaosong Zhang, Phineas Hamilton, Tao Xie, Rona Yaeger, Josep Tabernero

Faculty, Staff and Student Publications

What is this summary about?This summary discusses the genetic and molecular changes in tumors of participants with BRAF V600E–mutant metastatic colorectal cancer who were treated with encorafenib plus cetuximab, with or without binimetinib, in the BEACON study.

What were the results?Encorafenib plus cetuximab, with or without binimetinib, reduced the risk of participants dying compared with cetuximab plus chemotherapy, regardless of genetic or molecular colorectal cancer subtypes.The study also found genetic and molecular changes in the participants’ tumors during treatment that were associated with how long they lived.

What do the results of the study mean?The types of …

Outcomes After Palliative Radiation Therapy In Patients With Symptomatic Locoregionally Advanced Breast Cancer, Luisa E Jacomina, David M Swanson, Melissa P Mitchell, Wendy A Woodward, Benjamin D Smith, Karen E Hoffman, Chelain R Goodman, Haven R Garber, Susie X Sun, Timothy A Yap, Funda Meric-Bernstam, Isidora Y Arzu, Elizabeth S Bloom, Pamela J Schlembach, Eric A Strom, Michael C Stauder, Simona F Shaitelman

Faculty, Staff and Student Publications

Purpose: Symptomatic locoregionally advanced breast cancer (SLABC) can cause troublesome pain or wound complications that negatively impact quality of life. Although palliative radiation therapy (RT) can minimize tumor-related symptoms, how best to tailor RT to achieve the most meaningful and durable response is not well defined.

Methods and materials: This is a single institution, multi-site retrospective review of patients with SLABC treated between 2016 and 2023 with palliative RT to symptomatic disease in the breast, chest wall, and/or regional lymph node basins. Overall survival (OS), locoregional control (LC), clinical and radiographic treatment response, overall pain scores, and treatment-related toxicities were …

Bispecific Antibodies In Hematologic And Solid Tumors: Current Landscape And Therapeutic Advances, Lorenzo Guidi, Julian Etessami, Carmine Valenza, Augusto Valdivia, Funda Meric-Bernstam, Enriqueta Felip, Giuseppe Curigliano

Faculty, Staff and Student Publications

Bispecific antibodies (bsAbs) have emerged as a novel class of therapeutics, offering a dual-targeting strategy to enhance the therapeutic efficacy of monoclonal antibodies, which is often limited by tumor heterogeneity and the occurrence of resistance mechanisms. By simultaneously engaging two distinct antigens or pathways, bsAbs disrupt multiple signaling cascades simultaneously, preventing escape mechanisms and offering a more durable response. Furthermore, they can optimize immune activation, improving immune cell recruitment strategies. In particular, T-cell engager bsAbs facilitate immune cell-mediated tumor destruction by linking T cells to tumor antigens. Instead, dual immune checkpoint inhibitors (CPIs) enhance immune activation by blocking inhibitory signals. …

Exploring Natural Competence Of Escherichia Coli Through Biofilm Formation, Thulni Liyanaarachchi

University Honors Theses

Escherichia coli is a species not known for natural competence; however, specific growth conditions can induce the process in this bacterium due to the presence of homologous competence genes. These conditions could be met with biofilm formation through an active growth phase in the two-layer architecture. Therefore, my thesis examined whether natural competence is exhibited in E. coli during biofilm formation as determined by the genetic transfer of ampicillin and chloramphenicol-resistance genes between two separate strains. The experiments were broken into three aims to determine the morphology of the biofilm in inter-strain co-cultures and cell-DNA mixes, the effect of …

Investigating A Link Between Dna Repair And Dna Replication In Escherichia Coli Using A Bacterial Two-Hybrid System, Lo Cooper

University Honors Theses

Cells rely on nucleotide excision repair (NER) to remove bulky DNA lesions, such as those caused by UV light. In Escherichia coli, NER involves the UvrABC complex, and includes two main pathways, global genomic repair and transcription-coupled repair (TCR). While TCR, which preferentially removes lesions that block RNA polymerase on the transcribed strand of active genes, is well studied, less is known about whether a similar coupling between repair proteins and replisomes blocked by damaged DNA exists. Such a process has been suggested by a high throughput interactome study, using the replisome subunit HolC as bait and the damage …

Digesting The Details: How Cooking Shapes The Microbiome And Influences Obesity, Tracy Lieu

University Honors Theses

Obesity is a growing global health concern linked to chronic diseases and changes in the gut microbiome. While diet is known to affect gut microbes, less attention has been given to how food processing methods, such as heating, fermentation, and cold processing, change food in ways that influence the gut microbiome and health. This thesis reviews research on how different cooking and preparation techniques affect the availability of nutrients for microbial fermentation and the resulting effects on microbial diversity and metabolism. The findings show that fermentation and cold processing are the most supportive of gut health. These methods help preserve …

Indigenous Science And The Legacy Of Fire: Resilience, Fuels, Mosaics, And Eco-Cultural Landscapes In Oregon’S Coastal And Cascade Range, Julia Alcalá

University Honors Theses

Most of Oregon's western Cascade and Coastal range is a landscape that has historically been considered devoid of mid to low-intensity fires by Western science. However, for time immemorial, Indigenous peoples have been stewarding the forests through the use of "good fire," creating diverse and heterogenous landscapes with mixed fire regimes, ranging from less than a decade to several centuries since the last fire, resulting in a mosaic of patchy forest, oak savannas, prairies, and wetlands. Yet centuries of Indigenous displacement, cultural assimilation, and suppression of cultural burning contributed to this prevailing belief. Despite that, in recent decades, Western scientists …

Integrating Methods To Investigate Phytoplankton Dynamics Along Gradients Of A Major Urban River, Nicholas Sheldon

University Honors Theses

Waterways that support human society and life on Earth host superabundant microorganisms which support all ecosystems and food webs: phytoplankton. This study aimed to identify and quantify phytoplankton in the Willamette River in order to understand the dynamics between different phyla. Building on previous studies, which showed that communities of phytoplankton change with the river environment, this work determined how eukaryotic and prokaryotic phytoplankton vary with one another while inhabiting the same river conditions. The approach involved sampling the Willamette river over a weekly time series and combined analytical techniques of qPCR, flow cytometry, and image cytometry to assess population …