En-Face Imaging of T Cell-Dendritic Cell Immunological Synapses

Area of Science:

• Cell biology
• Immunology
• Microscopy

Background:

• Imaging the immunological synapse (IS) between dendritic cells (DCs) and T cells in suspension is challenging due to suboptimal cell-cell contact alignment.
• Vertical imaging planes necessitate optical sectioning, often leading to poor temporal and spatial resolution.

Purpose of the Study:

• To present a novel workflow for enhanced imaging of the DC-T cell IS.
• To overcome the limitations of traditional imaging techniques for studying cell-cell interactions in suspension.

Main Methods:

• Confining dendritic cells (DCs) and T cells between glass and polydimethylsiloxane (PDMS) layers.
• Orienting cells onto a horizontal imaging plane for en-face imaging.
• Utilizing fast imaging techniques for dynamic cellular processes.

Main Results:

• Achieved optimal cell-cell contact alignment along the horizontal imaging plane.
• Enabled fast en-face imaging of the DC-T cell IS.
• Improved spatial and temporal resolution compared to traditional methods.

Conclusions:

• The presented workflow significantly enhances the ability to image the DC-T cell IS.
• This method provides a valuable tool for studying immune cell interactions with improved resolution.
• Facilitates dynamic studies of immunological synapse formation and function.