Centrosome Polarisation in Immune Cells
Author Information
Author(s): Jane C Stinchcombe, Mariolina Salio, Vincenzo Cerundolo, Daniela Pende, Maurizo Arico, Gillian M Griffiths
Primary Institution: Cambridge Institute for Medical Research, University of Cambridge
Hypothesis
Do natural killer (NK) and invariant NKT (iNKT) cells use a similar mechanism as cytotoxic T lymphocytes (CTLs) to direct secretion towards the immunological synapse?
Conclusion
NK and iNKT cells use centrosome polarisation to direct secretory lysosomes to the immunological synapse, similar to CTLs.
Supporting Evidence
- Centrosomes of NK and iNKT cells polarise to the immunological synapse during target cell killing.
- Secretory lysosomes are directed towards the centrosome at the plasma membrane.
- The overall structure of the immunological synapse is similar across CTLs, NK, and iNKT cells.
Takeaway
Immune cells have a special way of aiming their attack at sick cells, making sure they hit the right target without hurting others.
Methodology
High-resolution electron microscopy was used to examine the contact sites of NK and iNKT cells with their targets.
Limitations
The study primarily focuses on the morphological aspects and does not explore the functional implications of centrosome polarisation in detail.
Participant Demographics
Healthy donors provided NK and iNKT cells for the study.
Digital Object Identifier (DOI)
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