An Innovative 3D-Printed Insert Designed to Enable Straightforward 2D and 3D Cell Cultures

Area of Science:

• Biotechnology
• Cell Biology
• Tissue Engineering

Background:

• Classical indirect cell communication studies rely on conditioned media, which is time-consuming and not physiologically relevant.
• Existing co-culture models are limited in cell type combinations and assay compatibility.

Purpose of the Study:

• To develop and validate a novel 3D-printed insert for versatile co-culture applications.
• To enable the study of intercellular communication between multiple cell types under more physiological conditions.

Main Methods:

• Utilized 3D-printed inserts to divide a 6-well plate into four compartments, allowing for controlled cell seeding and medium exchange.
• Incorporated windows in compartment walls to facilitate volume-dependent intercellular communication (paracrine signaling).
• Tested the system with various cell culture formats including monolayer, 3D spheroids, and 3D organoids.

Main Results:

• The 3D-printed inserts successfully supported co-culture of up to four cell types in various configurations (2D/3D).
• Intercellular communication assays performed using the inserts yielded reproducible results comparable to traditional conditioned media methods.
• The system allowed for independent collection of cell types and reagents from each compartment.

Conclusions:

• The 3D-printed insert provides a flexible, simple, and adaptable system for diverse co-culture models involving adherent cell types.
• This technology overcomes limitations of conditioned media and restricted commercial co-culture systems.
• It facilitates the study of cell-cell interactions in a more physiologically relevant manner.