Actin conformation dynamics precede force generation in cytotoxic T lymphocytes
Rochussen AM, Kebabci AO, Winkel AK, Franze K, Fletcher DA, Griffiths GM, Lippert AH (2026)
Publication Type: Journal article
Publication year: 2026
Journal
Book Volume: 9
Article Number: 1256
Journal Issue: 1
DOI: 10.1038/s42003-026-11011-3
Abstract
Cytotoxic T lymphocytes (CTLs) are cells of the adaptive immune system that are able to recognise and kill cancerous or virally infected target cells. The biochemical basis of CTL-mediated killing has been examined in great detail. Recent work has underscored the importance of physical forces in T cell function too, but how CTLs sense and exert force during migration and killing is not fully understood. Here, by expressing actin conformation probes based on the CH domain of utrophin, we directly visualize regions of altered F-actin conformation in primary CTLs during migration and killing. By combining these probes with traction force microscopy, we correlate external force with the internal cytoskeleton. We show that actin conformation is regulated upstream of force production, and that force exertion at the cytotoxic immune synapse temporally follows actin conformation dynamics. Our work offers insight into the relationship between cellular force production and F-actin conformation in important primary immune cells.
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Germany (DE)How to cite
APA:
Rochussen, A.M., Kebabci, A.O., Winkel, A.K., Franze, K., Fletcher, D.A., Griffiths, G.M., & Lippert, A.H. (2026). Actin conformation dynamics precede force generation in cytotoxic T lymphocytes. Communications Biology, 9(1). https://doi.org/10.1038/s42003-026-11011-3
MLA:
Rochussen, Adam M., et al. "Actin conformation dynamics precede force generation in cytotoxic T lymphocytes." Communications Biology 9.1 (2026).
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