Non-invasive approach for endoluminal biopsy coupled with single-cell proteomics allows for immune characterization of intracranial aneurysms
Antonios, J.; Gultekin, B.; Theriault, B.; Yalcin, K.; Miyagishima, D.; Adenu-Mensah, N.; Sujijantarat, N.; Koo, A.; Haynes, J.; Cedeno, P.; Johnson, M.; Hebert, R.; Matouk, C.; Barak, T.; Gunel, M.
Show abstract
The immune regulatory mechanisms driving the stability, growth, and rupture of intracranial aneurysms (IAs) remain incompletely understood. In this study, we employ endoluminal biopsy with single-cell proteomics to comprehensively profile the immune landscape of IAs across their pathologic states. Our findings reveal distinct immune signatures associated with aneurysm states. Stable, i.e. non-growing unruptured, IAs exhibit a balanced immune cell composition. Ruptured IAs are marked by significant neutrophil predominance. Notably, we highlight key immune markers in aneurysm instability, offering new insights into immune drivers of aneurysm progression. These findings provide a foundation for immune-targeted, non-invasive therapeutic strategies aimed at targeting IAs and preventing rupture.
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