Novel 3D Lung Tumor Spheroids for Oncoimmunological Assays

Kirsten De Ridder, Navpreet Tung, Jan-Timon Werle, Léa Karpf, Robin Maximilian Awad, Annie Bernier, Hannelore Ceuppens, Hélène Salmon, Cleo Goyvaerts

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Lung cancer thrives in a complex multicellular tumor microenvironment (TME) that impacts tumor growth, metastasis, response, and resistance to therapy. While orthotopic murine lung cancer models can partly recapitulate this complexity, they do not resonate with high-throughput immunotherapeutic drug screening assays. To address the current need for relevant and easy-to-use lung tumor models, a protocol is established to generate and evaluate fully histocompatible murine and human lung tumor spheroids, generated by coculturing lung fibroblasts with tumor cells in ultralow adherence 96-well plates. A spheroid generation protocol with the murine KrasG12Dp53−/− (KP) and Lewis Lung Carcinoma (LLC) cell lines is delivered next to the human lung H1650 adenocarcinoma line. In addition, their application potential to study tumor-stroma organization, T-cell motility, and infiltration as well as distinct macrophage subsets’ behavior using confocal microscopy is described. Finally, a 3D target-specific T-cell killing assay that allows spatiotemporal assessment of different tumor to T-cell ratios and immune checkpoint blockade regimens using flow cytometry and live cell imaging is described. This 3D lung tumor spheroid platform can serve as a blueprint for other solid cancer types to comply with the need for straightforward murine and human oncoimmunology assays.
Original languageEnglish
JournalAdvanced Nanobiomed Research
Issue number4
Publication statusPublished - Apr 2022


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