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Updated: Jun 19, 2026

Real-Time In Vitro Migration Assay for Primary Murine CD8+ T Cells
Published on: May 24, 2024
SKAP1 is dispensable for chemokine-induced migration of primary T-cells
Hongyan Wang1, Yuning Lu, Christopher E Rudd
1Department of Pathology, University of Cambridge, Tennis Court Road, Cambridge CB2 1QP, UK.
Immune adaptors SLP-76, ADAP and SKAP1 (SKAP-55) play central roles in anti-CD3 induced 'inside-out' signalling for LFA-1 activation and ICAM-1 adhesion. However, it has been unclear whether SKAP1 is also required for chemokine-induced T-cell motility. In this study, we found that SDF-1 and CCL21 induced similar motility in SKAP1 deficient (SKAP1-/-) and wild type (SKAP1+/+) resting, primary T-cells. In addition, the speed (i.e. 13 microM/min), tracking distance (i.e. length) and displacement values (i.e. direct distance between the start and the end positions of cell movement) in response to SDF1 were similar for SKAP1-/- and SKAP1+/+ primary, activated T-cells. Relatively high strength anti-CD3 ligation also arrested the migration (i.e. stop-signal) of resting SKAP1+/+ and SKAP1-/- T-cells in the presence of SDF-1 and CCL21. These data demonstrate that contrary to its central role in anti-CD3 induced LFA-1 adhesion, the response of primary T-cells to SDF-1 and CCL21 is not profoundly dependent on SKAP1 expression.
Immune adaptors SLP-76, ADAP and SKAP1 (SKAP-55) play central roles in anti-CD3 induced 'inside-out' signalling for LFA-1 activation and ICAM-1 adhesion. However, it has been unclear whether SKAP1 is also required for chemokine-induced T-cell motility. In this study, we found that SDF-1 and CCL21 induced similar motility in SKAP1 deficient (SKAP1-/-) and wild type (SKAP1+/+) resting, primary T-cells. In addition, the speed (i.e. 13 microM/min), tracking distance (i.e. length) and displacement values (i.e. direct distance between the start and the end positions of cell movement) in response to SDF1 were similar for SKAP1-/- and SKAP1+/+ primary, activated T-cells. Relatively high strength anti-CD3 ligation also arrested the migration (i.e. stop-signal) of resting SKAP1+/+ and SKAP1-/- T-cells in the presence of SDF-1 and CCL21. These data demonstrate that contrary to its central role in anti-CD3 induced LFA-1 adhesion, the response of primary T-cells to SDF-1 and CCL21 is not profoundly dependent on SKAP1 expression.
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