Microfluidic Device for Maternal-Fetal Interface Simulation
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Solution Overview
Problem
Current methods for studying maternal-fetal transfer face challenges such as interspecies differences in animal models and limited viability of ex vivo perfused placental tissue, as well as the inability of in vitro models to recapitulate the complex three-dimensional structure and dynamic microenvironments of the placental barrier.
Innovation Solution
A microfluidic device is developed to simulate capillary blood flow and maternal-fetal interactions, featuring compartmentalized co-culture of human trophoblasts and endothelial cells on a semipermeable membrane, with hydrogel layers to induce three-dimensional vasculogenesis and vessel network formation, allowing for controlled simulation of physiological and pathological conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If in vitro methods are used to study maternal-fetal transport, then cost is reduced and human cell-based models are provided, but the ability to recapitulate complex three-dimensional structure and dynamic mechanical and biochemical microenvironments is limited
Solution Approach 1:
The patent transitions from traditional two-dimensional cell culture to three-dimensional microfluidic organ-on-a-chip models that recapitulate the spatial architecture and physiological functions of maternal-fetal interface tissues, enabling complex 3D cell-cell and cell-matrix interactions while maintaining in vitro accessibility
Solution Approach 2:
The device is divided into functionally independent microfluidic channels and compartments that can be separately cultured and controlled, allowing different cell types (trophoblasts, endothelial cells, stromal cells) to be maintained in their specific microenvironments while facilitating controlled interaction at defined interfaces
2Reliability
If ex vivo perfusion of placental tissue is used, then physiological conditions are maintained, but the length of time the tissue remains viable is limited
Solution Approach 1:
The patent creates simplified in vitro copies of placental tissue architecture and function using human-derived cells cultured in microfluidic devices, which can be maintained indefinitely under controlled conditions while preserving key physiological functions such as nutrient transport and hormonal production
Solution Approach 2:
The microfluidic system incorporates integrated components for automated medium perfusion, waste removal, and environmental control, enabling long-term culture maintenance without continuous manual intervention and sustaining tissue viability for extended periods
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
The microfluidic device effectively reconstitutes the maternal-fetal interface, enabling precise control over cell interactions and environment, improving the accuracy of maternal-fetal transfer studies and providing a low-cost, human cell-based alternative to existing models.
Implementation Method 1
a microfluidic device comprises a base, a membrane, a first monolayer of cells of a first cell type and a second monolayer of cells of a second cell type... the first and second microfluidic channels are in fluid communication through the membrane
Implementation Method 2
a first layer of a hydrogel can be formed on the first side of the membrane. a second layer of a hydrogel can be formed on the second side of the membrane... a second cell type can be encapsulated in the first or second hydrogel layer to induce three-dimensional vasculogenesis and vessel network formation
Implementation Method 3
The microfluidic device can simulate capillary blood flow in a fetal compartment of the device and pooled blood in a maternal compartment of the device
Data Source
AI summary
The presently disclosed subject matter provides a microfluidic device that can simulate capillary blood flow on a fetal side of the device and pooled blood on a maternal side of the device (i.e., intervillous space). The microfluidic device can reconstitute the maternal-fetal interface, can expand the capabilities of cell culture models, and can provide an alternative to current maternal-fetal transfer models.