3D Cell Tissue Layering for Thick, Low-Void Tissue Construction
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Solution Overview
Problem
Existing methods for constructing three-dimensional cell tissues are inefficient, time-consuming, and struggle to produce thicker tissues with controlled layer thickness and arrangement, often causing physical damage to cells and low recovery rates.
Innovation Solution
A method involving mixing cells with a cationic substance, a polymeric electrolyte, and an extracellular matrix component to form a cell aggregate, followed by centrifugal separation and suspension to create a stable, thick three-dimensional cell tissue with reduced voids and controlled layering.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If existing methods are used to construct three-dimensional cell tissues, then cell organization can be achieved, but the construction process is time-consuming and inefficient
Solution Approach 1:
The invention divides the cell tissue construction process into discrete layers that can be independently prepared and then stacked. Each layer is formed by depositing cells onto a substrate, allowing parallel preparation and reducing overall construction time while maintaining organizational integrity.
Solution Approach 2:
The invention prepares cell layers in advance before final assembly. Cells are cultured, harvested, and suspended in preparation media beforehand, so that when construction is needed, pre-prepared layers can be quickly deposited and stacked without time-consuming processing during assembly.
2Length of stationary object
If existing methods are used to construct three-dimensional cell tissues, then tissue formation is possible, but the tissues are thin and lack controlled thickness
Solution Approach 1:
The invention constructs thick tissues by stacking multiple thin cell layers rather than attempting to form a single thick layer. This segmentation approach enables precise thickness control through the formula: total thickness = number of layers × thickness per layer, where each layer's thickness is easily controlled during deposition.
Solution Approach 2:
The invention transitions from forming tissues in a single dimension to building them layer-by-layer in the vertical dimension. By controlling the number of stacked layers, the invention achieves precise thickness control while creating three-dimensional tissue structures with controlled architecture.
3Stability of the object's composition
If existing methods are used to construct three-dimensional cell tissues, then cell aggregation can be achieved, but voids are present in the tissue structure
Solution Approach 1:
The invention forms multiple thin cell layers with high cell density and minimal internal voids, then stacks them to create a homogeneous thick tissue. Each thin layer is sufficiently dense that when layers are stacked, the cumulative structure achieves homogeneity without the large voids that would exist in a single thick aggregation.
Solution Approach 2:
The invention achieves homogeneous tissue composition by stacking multiple layers of uniformly distributed cells. Each layer is prepared with consistent cell suspension concentration and deposition parameters, ensuring uniform cell distribution. The stacked layers maintain this homogeneity throughout the entire tissue thickness, eliminating the voids present in conventional aggregation methods.
4Reliability
If existing methods are used to construct three-dimensional cell tissues, then cell layers can be formed, but physical damage occurs to cells during processing
Solution Approach 1:
The invention replaces harsh mechanical processing steps with gentle chemical and biological methods. Instead of using forceful centrifugation, filtration, or mechanical disruption to form cell layers, the invention employs controlled cell deposition from suspension and layer stacking, which preserves cell integrity while achieving the same structural outcome.
5Productivity
If existing methods are used to construct three-dimensional cell tissues, then cell layers can be processed, but cell recovery rate is low
Solution Approach 1:
The invention uses the cells' own properties to facilitate their collection and assembly. By controlling cell adhesion characteristics and using physiological buffer solutions, the invention enables cells to self-assemble into layers without requiring harsh processing steps that would cause cell loss. The cells naturally deposit and adhere to form layers, eliminating the need for forceful collection methods.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables the rapid and convenient production of thicker three-dimensional cell tissues with fewer voids and improved cell recovery rates, allowing for efficient construction of tissues with controlled thickness and layering, reducing physical damage and operational complexity.
Implementation Method 1
constructing a three-dimensional tissue of a cell by using magnetite cationic liposomes (MCL) containing nanomagnetic fine particles having electrostatic interaction with a cell membrane
Implementation Method 2
by mixing normal human thermal fibroblast (NHDF) cells with fibronectin (FN), heparin (Hep), or dextran sulfate (DS) and subsequently subjecting the mixture to centrifugal separation
Data Source
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AI summary
A method of producing a three-dimensional cell tissue, including: a step A of mixing cells with a cationic substance and an extracellular matrix component to obtain a mixture; a step B of gathering the cells from the obtained mixture to form a cell aggregate on a substrate; and a step C of culturing the cells to obtain a three-dimensional cell tissue.