Glioblastoma is the most lethal primary brain tumor in adults, largely due to the blood-brain barrier (BBB), which blocks potentially effective chemotherapeutic drugs from entering the brain. Using zebrafish, Dr. O’Brown [Timmerman Traverse-Rachleff Innovator] aims to identify small molecules that can temporarily increase BBB permeability, enhancing drug delivery to brain tumors like glioblastoma and potentially improving patient outcomes. To achieve this, she will screen for small molecules that enhance BBB permeability and then validate promising candidates in mammalian systems to confirm their relevance for human use. Additionally, she will engineer “humanized” zebrafish to test advanced drug delivery methods in clinical trials. This innovative approach provides a new platform for discovering BBB-modulating therapies and paves the way for tailored treatments, offering hope for improved outcomes in aggressive brain cancers.

Dr. Chen’s research aims to harness a common skin-colonizing bacterium, present on all our skin, to train the immune system to attack cancer without causing infection or inflammation. This process is known to occur—notably, across an intact skin barrier—but its mechanism is not well understood. Dr. Chen is investigating which skin cells sense these bacteria and transmit the signal to immune cells, and why the immune cells that respond are so effective at killing cancer. Ultimately, she intends to develop a new type of cancer vaccine using engineered skin bacteria to activate immune cells to effectively target and destroy tumors. While the project’s current focus is melanoma, the goal is to apply this therapeutic approach across cancer types.

Certain immunotherapies work by instructing macrophages, a type of innate immune cell, to attack the tumor by phagocytosing, or eating cancer cells. However, macrophages rarely eat an entire cancer cell within a solid tumor. Instead, they nibble pieces off the cancer cell, a process called trogocytosis. While phagocytosis kills the cancer cell, trogocytosis usually doesn’t – and worse, nibbling removes the markers on the cancer cell that allow the immune system to recognize it as a threat. Dr. Morrissey is studying why some cancer cells die after being nibbled while others survive, with the goal of making macrophage-activating immunotherapies more effective. Specifically, she is studying Her2-positive breast and ovarian cancers, as it has been shown that Her2 immunotherapies cause trogocytosis instead of phagocytosis. This research could enhance any immunotherapy that is designed to activate macrophage phagocytosis, improving treatment of diverse cancers like lung cancer, lymphoma, and glioblastoma.

CAR T cells, or genetically engineered immune cells, have transformed the treatment of cancer in recent years, achieving cures for many patients who previously faced terminal diagnoses. Despite the remarkable impact that CARs have had on patients and families, however, fewer than 5% of cancer patients currently benefit from these therapies. A major barrier to broader CAR applications lies in the identification of tumor-specific targets: only ~0.00000001% of the cell surface distinguishes tumor cells from healthy cells. To date, CARs have targeted molecules on the surface of tumor cells, but the majority of tumor-specific molecules reside within the cell, where they are inaccessible to conventional CARs. Dr. Yarmarkovich’s team has pioneered a new class of CAR T cells that are able to target key drivers of cancer. These CARs completely eradicate aggressive tumors in preclinical testing and are entering the clinic in 2025. Encouraged by this success, he has proposed three new strategies to comprehensively map the landscape of subtle molecular differences that distinguish tumor cells from healthy cells. He will map the “known unknowns” using cutting-edge technologies for characterizing the surface of tumor cells, as well as the “unknown unknowns” by harnessing the immune system’s intrinsic capacity for identifying foreign targets. The goal of this study is to significantly expand the landscape of actionable immunotherapy targets, paving the way for curative therapies that benefit a much larger population of cancer patients.

Dr. Perry [Damon Runyon-Lois A. Cinelli Awardee supported by the Cinelli Family Foundation] is investigating how a key immune cell in the tumor microenvironment, the macrophage, contributes to cancer’s development and progression. His work focuses on triple-negative breast cancer, as it remains one of the deadliest cancers, especially to young women and Black women, with decades of treatment efforts failing to improve patient outcomes. Specifically, Dr. Perry aims to combine novel methods of manipulating and imaging the cellular metabolism to better understand how macrophages contribute nutrients to help cancer cells meet their nutrient demand and escape treatment. This work will not only provide a method for diagnostic biomarker identification but also establish a novel platform for developing individualized treatments. Importantly, his work has the potential of being broadly applicable to all difficult-to-treat metastatic adenocarcinomas.

Many cancer diagnostic and treatment strategies use markers on the cell surface to find and kill cancer cells in a sea of healthy tissue. Dr. Flynn's research aims to expand our knowledge of what molecules are found on the surface of cancer cells. He will focus on acute myeloid leukemia (AML), as there is a major unmet clinical need for new curative treatments. Specifically, he aims to define RNA as a new cell surface molecule that could have unique structures on AML cells. With this knowledge he will develop antibodies to selectively detect cancer cells and enable tumor killing. Because tumors from other parts the body also express RNA on their surface, this strategy is expected to be broadly applicable to other cancer types.

Groundbreaking advances in immunotherapy have revolutionized the treatment of cancer. In particular, new antibody drugs that block immunosuppressive pathways have achieved remarkable success in reawakening the immune system to clear tumor cells, leading to lasting cures in patients whose cancers do not respond to any other therapies. Unfortunately, the majority of patients (>70%) do not respond to immunotherapy treatment. It is difficult to predict which patients will benefit, creating an urgent demand for novel immunotherapy drugs that act through alternative mechanisms. Dr. Spangler is working to develop a class of antibody therapeutics that target cancer-promoting pathways in a different way than all current immunotherapies, with the goal of drastically expanding the percentage of cancer patients who benefit from them.