Multicellular Spheroid Preparation via Inert Matrix Suspension
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Solution Overview
Problem
Current three-dimensional cell culture systems fail to effectively mimic the in vivo cellular relationships and environment, leading to a lack of heterogeneity and accuracy in modeling tumor structures and responses to therapeutic agents.
Innovation Solution
A process for preparing multicellular spheroids by generating a suspension of single cells from biological tissue or cell-containing bodily fluids, adjusting cell concentration, and adding an inert matrix, which allows for direct derivation and incubation to form spheroids that closely mimic the antigen and genetic profiles of the original tissue.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If two-dimensional monolayer cell culture is used, then cells are supplied uniformly with nutrients and analysis is easy, but the culture does not reflect the true in vivo three-dimensional architecture of tumors and represents a homogenous cell population
Solution Approach 1:
The invention transitions from two-dimensional monolayer culture to three-dimensional spheroid culture, allowing cells to arrange themselves in a spatial configuration that mimics the in vivo tumor architecture. This dimensional change enables the formation of heterogeneous cell populations with different morphologies and functional states, while maintaining ease of analysis through standardized spheroid protocols.
2Adaptability or versatility
If three-dimensional cell culture systems are used to mimic in vivo conditions, then cellular heterogeneity is improved, but the systems are complex and require specialized equipment and techniques
Solution Approach 1:
The spheroid formation process utilizes the cells' own properties and interactions to self-organize into three-dimensional structures. By providing appropriate culture conditions (substrate composition, oxygen tension, nutrient supply), the system enables cells to spontaneously form heterogeneous spheroids that mimic in vivo architecture, eliminating the need for complex external guidance structures or sophisticated equipment.
3Measurement precision
If primary cells are used directly from tissue, then the spheroids exhibit accurate antigen and genetic profiles, but the process requires careful control of cell suspension concentration and preparation
Solution Approach 1:
The invention optimizes specific parameters of the cell suspension (concentration, viability, cell type composition) to ensure accurate representation of the original tissue. By controlling these parameters during spheroid formation, the process maintains high accuracy of antigen and genetic profiles while establishing standardized protocols that simplify repeated preparations.
Data Source
AI summary
The invention pertains to a process for the preparation of multicellular spheroids from a suspension of single cells, wherein the cells are directly derived from a biological tissue and/or from cell-containing bodily fluid. The invention is further directed to the multicellular spheroids obtained by the process according to the invention as well as to the use of the spheroids for diagnostic, screening and therapeutic purposes.