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| Home > Publications database > Integrated real-time imaging of executioner caspase dynamics, apoptosis-induced proliferation, and immunogenic cell death using a stable fluorescent reporter platform. |
| Home > Publications database > Integrated real-time imaging of executioner caspase dynamics, apoptosis-induced proliferation, and immunogenic cell death using a stable fluorescent reporter platform. |
| Journal Article | DKFZ-2025-01639 |
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2025
Nature Publishing Group
London
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Please use a persistent id in citations: doi:10.1038/s41420-025-02662-y
Abstract: Regulated cell death plays a central role in tissue homeostasis, disease progression, and therapeutic responses. However, tools to study these processes with high spatiotemporal resolution in physiologically relevant systems remain limited. Here, we present a fluorescent reporter cell system that enables real-time visualization of caspase-3/-7 activity via a DEVD-based biosensor, alongside a constitutive fluorescent marker for assessing successful transduction and cell presence. We generated stable cell lines expressing this reporter and adapted them to both 2D and 3D culture systems, including organoids. This platform allowed dynamic tracking of apoptotic events and viability loss at single-cell resolution. Using a proliferation dye, we also detected apoptosis-induced proliferation in neighboring cells. Furthermore, the system enabled simultaneous detection of immunogenic cell death via an endpoint measurement of surface calreticulin exposure by flow cytometry, supporting its application in studying immunogenic signaling. By measuring and integrating multiple cell death readouts by live-cell imaging, our system is well-suited for high-content screening and mechanistic dissection of different modes of cell death. When combined with complementary markers of pyroptosis and necroptosis, this platform may also be extended to investigate more complex, integrated forms of cell death.
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