Abstract 4914: Mapping the cancer immune landscape in colorectal adenocarcinoma using multiplexed imaging and AI based analysis

Abstract Colorectal cancer is a high burden cancer in the United States, leading to the second highest cause of cancer deaths. Despite chemotherapeutic intervention and surgical resection, recurrent disease may occur in some patients and typically, has a poorer prognosis. Thus, there is a demand for advanced therapies such as immunotherapies for improved clinical outcomes. An in-depth understanding of the colon cancer microenvironment is necessary to improve outcome in this subset of patients. Spatial biology approaches are well positioned to comprehensively uncover the molecular and biological mechanisms of cancer cell aggression in colorectal cancer. Here, we visualized nearly 30 biomarkers in colon adenocarcinoma (CAC) tissue using the Cell DIVE multiplexed imaging workflow and validated antibodies from Cell Signaling Technology (CST®). Using this approach, we were able to probe multiple pathways of interest in cancer progression, such as vascularization of tumor tissue, immune cell responses, and cell proliferation. Together, these data allow the creation of a spatial map of tumor cell aggression and offer predictive value for the progression of the disease. Deep molecular and architectural insights on this level are possible only with a spatial biology approach and offer multiple downstream hypotheses to further understand cancer progression and interrogate the heterogeneity within the tumor microenvironment. Citation Format: Vasundhara Agrawal, Lisa Arvidson, Michael J. Smith, Katie O. White, Richard A. Heil-Chapdelaine, Samuel Jensen, Arindam Bose. Mapping the cancer immune landscape in colorectal adenocarcinoma using multiplexed imaging and AI based analysis abstract. In: Proceedings of the American Association for Cancer Research Annual Meeting 2024; Part 1 (Regular Abstracts) ; 2024 Apr 5-10; San Diego, CA. Philadelphia (PA): AACR; Cancer Res 2024;84 (6Suppl): Abstract nr 4914.