Cellular Micro-Masonry for Single-Cell Precision in 3D Tissue Models
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current methods in 3D bioprinting are not precise enough to replicate the detailed spatial structures and functions of tissues, as they rely on self-assembly processes that are time-consuming and do not accurately reproduce the structural and functional heterogeneities found in vivo tissues.
Innovation Solution
The development of a cellular micro-masonry system that uses a translation system with a micro-capillary attached to a suction/pressure generator, combined with a 3D culture medium made from jammed microgels, allowing for precise manipulation and placement of cells in a 3D structure, enabling the creation of complex cellular patterns with single-cell precision.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If self-assembly processes are used to build tissues, then large structures containing 10^5-10^9 cells can be produced, but the spatial structure and patterning precision is insufficient to replicate in vivo tissue heterogeneities
Solution Approach 1:
The patent segments the tissue construction process into two distinct phases: (1) bulk self-assembly for generating large numbers of cells (10^5-10^9 cells), and (2) precision micro-masonry for placing individual cells (1-100 cells) at specific locations to create spatial heterogeneities. This segmentation allows each method to operate in its optimal regime, combining the scalability of self-assembly with the precision of manual placement.
Solution Approach 2:
The patent introduces a new dimension of control by transitioning from population-level statistical patterns to single-cell precision placement. The micro-masonry system operates at a different scale dimension (single cells rather than bulk populations), enabling the creation of spatially heterogeneous structures with controlled cell positions, orientations, and interactions that cannot be achieved through self-assembly alone.
2Quantity of substance
If self-assembly processes are used, then large scale tissue production is achieved, but the process is time-consuming and does not accurately reproduce structural heterogeneities
Solution Approach 1:
The patent divides the tissue construction task into segments: bulk self-assembly for rapid generation of cell populations, and targeted micro-masonry for precise cell placement. This segmentation allows the majority of cells (10^5-10^9) to be produced quickly through self-assembly, while only the critical few (1-100 cells) requiring precise spatial positioning are placed individually, minimizing total construction time.
Solution Approach 2:
The patent applies partial precision action by using micro-masonry only where spatial heterogeneity is critical (1-100 cells out of 10^5-10^9 total cells). This partial action approach avoids the excessive time cost of placing every cell individually while still achieving the structural heterogeneities necessary for functional tissue models.
3Manufacturing precision
If cell-by-cell placement is performed manually, then precise spatial structures are created, but the productivity is too low for large scale tissue production
Solution Approach 1:
The patent segments the cell placement task by quantity and complexity: manual micro-masonry for small numbers of cells (1-100 cells) requiring high precision, and automated self-assembly for large numbers of cells (10^5-10^9 cells). This segmentation matches the appropriate method to the scale of the task, maintaining high productivity for bulk production while achieving high precision where needed.
Solution Approach 2:
The patent uses self-assembly as a copying mechanism where a small number of precisely placed cells (1-100 cells) serve as templates or seeds that guide the self-assembly of the remaining bulk cells (10^5-10^9 cells). This copying approach allows the precision work to be performed once on a small scale, with the pattern then replicated automatically through self-assembly at large scale.
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 assembly of precise 3D cellular structures that can mimic the spatial heterogeneities of in vivo tissues, facilitating the study of tissue function and behavior, and potentially accelerating the development of functional tissue models.
Implementation Method 1
a three-dimensional (3D) cell culture medium comprising a plurality of hydrogel particles and a liquid cell culture medium, wherein the hydrogel particles are swelled with the liquid cell culture medium to form a granular gel
Implementation Method 2
a suction generating system, a pressure generating system, or both coupled to the translation system
Data Source
AI summary
Described herein are systems and methods relating to cellular micro-masonry. Systems and methods as described herein allow a user to create three-dimensional (3D) structures of cells disposed in a 3D culture medium. Systems and methods as described herein provide for the manipulation and construction of cellular structures on a single, cell-by-cell, basis.