Cell Tracking in Cancer Immunotherapy.

Area of Science:

• Immunology
• Nuclear Medicine
• Biomedical Imaging

Background:

• Cancer immunotherapy has advanced due to a better understanding of immune system regulation.
• Monitoring immune cell migration is vital for characterizing disease and selecting treatments.
• Traditional methods like radiolabeled white blood cells are being enhanced by novel non-invasive imaging techniques.

Purpose of the Study:

• To review current and emerging non-invasive imaging methods for tracking immune cells in vivo.
• To focus on the application of cell tracking in therapeutic contexts, especially Chimeric Antigen Receptor (CAR) T-cell therapy.
• To discuss the impact of advanced imaging on the progress of novel therapeutic modalities.

Main Methods:

• Overview of ex vivo cell labeling techniques (paramagnetic, radioactive, fluorescent tracers).
• Description of in vivo cell tracking methods (tracer capture, labeled antibodies/ligands, pre-targeted substrates).
• Discussion of SPECT and PET imaging applications in detecting and quantifying specific cells within tumors.

Main Results:

• Emerging non-invasive methods improve detection sensitivity and preserve cell activity/integrity.
• Both in vitro and in vivo cell labeling strategies offer distinct advantages and limitations.
• Imaging provides a powerful tool for monitoring therapeutic cells and disease-related cells.

Conclusions:

• Longitudinal, whole-body immune cell tracking is essential for personalized cancer therapy.
• Advanced imaging techniques are critical for the success and development of cell-based therapies.
• The integration of imaging into cell therapy research will accelerate therapeutic progress.