Real-Time Analysis of Resident T-cell Migration in Different Tumor Regions Using Confocal Microscopy
Published: March 29, 2024
Abstract
Source: Peranzoni, Elisa, et al. Ex Vivo Imaging of Resident CD8 T Lymphocytes in Human Lung Tumor Slices Using Confocal Microscopy. J. Vis. Exp. (2017).
This video describes the imaging of resident tumor-infiltrating CD8 T cells labeled with fluorescently coupled antibodies within human lung tumor slices. This technique permits real-time analyses of CD8 T cell migration using confocal microscopy.
Protocol
1. Immunostaining of resident CD8 T cells and tumor cells Dilute the antibodies (final concentration 10 µg/mL) and the nuclear dye (final concentration 1 µg/mL) in RPMI-1640 media without phenol red. NOTE: Use fluorescently-coupled anti-CD8 (murine IgG, clone SK1) and anti-EpCAM (epithelial cell adhesion molecule) (murine IgG HEA-125) antibodies to label CD8 T lymphocytes and tumor epithelial cells, respectively. Use fluorescently-coupled anti-CD90/Thy1 (muri…
Representative Results
Figure 1: Photographs of the perfusion system. A) The phenol red-free RPMI solution is enriched in 5% CO2, 95% O2. B) The solution is then perfused by a peristaltic pump. C) The RPMI solution enters the culture dish via the inlet. At the outlet, the solution is aspirated by the pump from the chamber into a waste container. Note that the aspiration tip is set at a level to de…
開示
The authors have nothing to disclose.
Materials
| Upright confocal microscope | Leica | The use of a spinning disk confocal is recommended | |
| Imaris software | Bitplane | This sofware is used for visualization of images and tracking of T cell migration | |
| Fine Forceps | World Precision Instruments | 14142 | |
| 30 mm Culture inserts | Millipore | PICM0RG50 | |
| Roswell Park Memorial Institute (RPMI) medium, GlutaMAX Supplement | ThermoFisher | 61870010 | Complete RPMI-medium is made by adding 10 % heat-inactivated fetal calf serum and Penicillin/ streptomycin |
| Phosphate-buffered saline (PBS) | ThermoFisher | 20012019 | |
| Hanks' Balanced Salt Solution (HBSS) | Invitrogen | 14170088 | |
| Low gelling temperature Agarose, type VII-A | Sigma-Aldrich | A0701 | |
| Non-toxic butyl Cyanoacrylate Glue, Vetbond | 3M | 1469 | |
| Slice anchors, 19.7 diameter, 2 mm spacing threads | Warner Instruments | 64-1415 | |
| Stainless steel washers, 5 mm of inner diameter | Amazon | B004K1FDGQ | |
| BV605-conjugated anti-CD8 (clone SK1) | BD Biosciences | 565289 | |
| FITC-conjugated anti-EpCAM (clone HEA-125) | Miltenyi Biotec | 130-098-113 | |
| BV510-conjugated anti-CD90 (clone 5E10) | Biolegend | 328125 | |
| 4',6-diamidino-2-phenylindole (DAPI | ThermoFisher | D1306 |
