Ex Vivo Tissue Slice/Explant Invasion Assay

  • Principle
  • Experimental Materials
  • Experimental Procedure
  • Troubleshooting

Materials Required

• DAPI (HY-D2868)
• DAPI dihydrochloride (HY-D0814)

Principle

Ex vivo organotypic tissue slice cultures are based on maintaining thin, viable tissue sections at an air-liquid interface to preserve native cytoarchitecture and local cell-matrix interactions, enabling observation of cell behavior such as migration and tissue infiltration within a physiologically relevant 3D microenvironment. The method relies on maintaining tissue viability on porous membrane supports, allowing diffusion of nutrients and oxygen while preserving structural integrity for extended culture periods, which makes it suitable for studying dynamic cellular processes in intact tissue contexts such as cell movement and tissue remodeling.[1].

MCE has not independently verified the accuracy of these methods. They are for reference only.

Experimental Materials

• Organotypic slice culture systems typically require basal culture media supplemented with serum and nutrients to maintain tissue viability and support long-term survival of ex vivo slices at an air-liquid interface, enabling continued metabolic activity and structural preservation of the tissue explant[1].

• No specific antibody or dye requirements are defined in the foundational slice culture protocol; downstream detection reagents depend on the experimental readout used to visualize cell localization or tissue structure in cultured slices[1].

• A porous membrane culture system is used to support tissue slices at the interface between air and liquid phases, allowing optimized gas exchange and nutrient diffusion while preserving tissue architecture in long-term culture conditions[1].

Experimental Procedure

• Tissue slices are prepared by sectioning freshly isolated tissue into thin sections that can be maintained in culture while preserving cytoarchitecture, followed by placement onto porous membrane inserts that allow air-liquid interface culture conditions to sustain viability and structural integrity over time[1].

• Prepared tissue slices are positioned on membrane supports and maintained in culture medium under conditions that support long-term viability, enabling preservation of tissue structure and cellular organization while allowing observation of cell behavior within the slice environment over time in vitro[1].

• Cellular behavior within organotypic tissue slices is typically assessed by monitoring spatial distribution and movement of cells within the preserved tissue architecture, with analysis focused on changes in localization patterns and structural interactions within the native tissue microenvironment maintained in culture[1].

Troubleshooting

Loss of tissue integrity during culture:

Possible Cause
Disruption of slice architecture or inadequate maintenance of air-liquid interface conditions; Literature-supported Solutio

- Ensure slices are maintained on porous membrane supports that preserve structural organization and allow proper diffusion of nutrients and oxygen to sustain tissue viability over time[1].

Reduced viability of cultured tissue slices:

Possible Cause
Insufficient nutrient supply or suboptimal culture conditions affecting long-term tissue maintenance; Literature-supported Solutio

- Maintain organotypic slices under conditions that support sustained metabolic activity and tissue survival through appropriate medium supplementation and interface-based culture configuration[1].

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