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Human T Lymphocyte Isolation, Culture and Analysis of Migration In Vitro
Published on: June 1, 2010
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Microenvironmental Control of High-Speed Interstitial T Cell Migration in the Lymph Node
Tomoya Katakai1, Tatsuo Kinashi2
1Department of Immunology, Graduate School of Medical and Dental Sciences, Niigata University , Niigata , Japan.
Frontiers in Immunology
|June 1, 2016
Summary
T cells rapidly migrate in lymph nodes by switching between movement styles. Fibroblastic reticular cells and dendritic cells guide this high-speed T cell movement, crucial for immune responses.
Area of Science:
- Immunology
- Cell Biology
- Microscopy
Background:
- T cells are crucial for adaptive immunity and reside in lymph node (LN) paracortex.
- High-speed T cell migration is vital for scanning dendritic cells (DCs) to detect antigens.
Purpose of the Study:
- To elucidate the mechanisms behind rapid T cell migration in the lymph node microenvironment.
- To understand how T cells achieve high interstitial velocities.
Main Methods:
- Live imaging using two-photon laser scanning microscopy.
- Analysis of T cell migration velocity and movement patterns.
Main Results:
- T cells exhibit vigorous, non-directional migration at >10 μm/min in the LN paracortex.
- Fibroblastic reticular cells (FRCs) and DCs cooperatively regulate T cell motility.
- FRCs produce chemokines and lysophosphatidic acid; DCs express ICAM-1, facilitating LFA-1-dependent migration.
- The dense LN microenvironment promotes anchorage-independent motility.
Conclusions:
- T cells dynamically switch between anchorage-dependent and -independent motility modes.
- The unique LN microenvironment and T cell migration strategies enable high-speed interstitial movement.
- Understanding T cell migration is key to optimizing adoptive immune responses.
