Engineered 3D Human Heart Tissue With Electromechanical Maturation
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Solution Overview
Problem
Current in vitro culture systems and animal models fail to accurately emulate human heart physiology, lacking key features of adult heart muscle such as excitation-contraction coupling, mature calcium homeostasis, and positive force-frequency response, which hinders effective drug discovery and modeling of cardiovascular diseases.
Innovation Solution
Engineered 3-D human heart tissue is developed using induced pluripotent stem cells (iPS cells) that undergo electromechanical conditioning to mature into adult-like heart muscle, incorporating a vascular network and microfluidic connections, enabling real-time measurement of physiological responses.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If current in vitro culture systems and animal models are used, then drug screening and disease modeling can be performed, but the models fail to accurately emulate human heart physiology due to lacking mature cardiac tissue characteristics
Solution Approach 1:
The patent applies preliminary action by subjecting engineered cardiac tissues to extended culture periods (4-8 weeks) and electromechanical conditioning before use, allowing the tissues to develop mature characteristics such as T-tubule networks, proper calcium handling, and adult-like contractile properties. This pre-maturation process ensures the tissues are physiologically relevant before drug screening or disease modeling applications.
Solution Approach 2:
The patent employs parameter changes by modifying culture conditions including extended culture time (4-8 weeks), controlled oxygen tension, serum-free media composition, and electromechanical stimulation parameters. These parameter adjustments drive the transformation from immature to mature cardiac tissue phenotypes, achieving adult-like physiology in engineered tissues.
2Reliability
If engineered tissues are developed to recapitulate adult heart characteristics, then accurate drug screening becomes possible, but the development process requires extended culture time and complex conditioning protocols
Solution Approach 1:
The patent applies periodic action through electromechanical conditioning protocols that deliver cyclic electrical stimuli and mechanical stretch to engineered cardiac tissues. This periodic stimulation mimics physiological heart activity patterns, accelerating maturation processes and promoting development of mature cardiac characteristics including synchronized contraction and proper calcium cycling.
Solution Approach 2:
The patent implements continuity of useful action by maintaining tissues in extended culture (4-8 weeks) with continuous optimization of culture conditions and sustained electromechanical conditioning. This continuous maturation process ensures progressive development of mature tissue characteristics without interruption, achieving reliable adult-like physiology for predictive drug screening.
3Ease of manufacture
If immature cardiomyocytes are used in engineered tissues, then tissue formation is easier and faster, but the tissues lack excitation-contraction coupling, mature calcium homeostasis, and positive force-frequency response
Solution Approach 1:
The patent applies preliminary action by establishing the basic tissue structure using readily available immature cardiomyocytes, then subsequently applying electromechanical conditioning and extended culture to mature the tissues. This two-stage approach first achieves easy tissue formation, then progresses to functional maturation, combining manufacturing simplicity with physiological reliability.
Solution Approach 2:
The patent employs parameter changes by transitioning culture conditions from initial tissue formation parameters to maturation parameters including serum-free media, controlled oxygen tension, and electromechanical stimulation. These parameter shifts drive the transformation from easily formed but immature tissues to functionally mature tissues with proper excitation-contraction coupling and calcium handling.
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 engineered tissue exhibits mature structural and functional properties of adult heart muscle, including well-developed T-tubules and positive force-frequency response, allowing accurate drug screening and disease modeling.
Implementation Method 1
The iPS-derived cardiomyocytes are conditioned to induce cell maturation by exposing the derived cells to electromechanical stimuli that increase in intensity over a period of time
Data Source
AI summary
A cardiac organoid containing 3-D matter of adult human heart tissue.