Researchers have used advanced 3D imaging techniques to visualize how cytotoxic T lymphocytes, the body's specialized killer cells, eliminate infected or cancerous cells. The study, published in a peer-reviewed journal, reveals the precise structure of the immune synapse, a specialized exchange zone where T cells release cytotoxic molecules.
The imaging shows that T cells form a stable interface with target cells, organizing proteins and signaling molecules into a structured zone. This allows the directed release of perforin and granzymes, which puncture the target cell membrane and induce apoptosis. The 3D reconstruction provides unprecedented detail of the molecular architecture at the synapse.
According to the researchers, this understanding could lead to improved immunotherapies, such as enhancing CAR-T cell efficacy. The findings were confirmed by multiple imaging modalities, including electron microscopy and super-resolution fluorescence microscopy.
