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Cardiogenesis of embryonic stem cells with liquid marble micro-bioreactor
Fatemeh Sarvi1, Kanika Jain, Tina Arbatan
1Division of Biological Engineering, Monash University, VIC, 3800, Australia; Department of Mechanical & Aerospace Engineering, Monash University, VIC, 3800, Australia.
Advanced Healthcare Materials
|May 14, 2014
Summary
Liquid marbles create a unique microenvironment for generating uniform embryonic stem cell (ESC) aggregates. This method efficiently promotes ESCs to differentiate into functional cardiomyocytes without growth factors.
Area of Science:
- Biotechnology
- Stem Cell Biology
- Developmental Biology
Background:
- Embryonic stem cells (ESCs) are crucial for regenerative medicine.
- Generating uniform embryoid bodies (EBs) is essential for controlled differentiation.
- Existing methods for EB formation can be complex and costly.
Purpose of the Study:
- To investigate the use of liquid marbles as micro-bioreactors for ESC culture.
- To assess the efficiency of ESC differentiation into cardiomyocytes within liquid marbles.
- To establish a cost-effective and efficient method for generating functional cardiomyocytes.
Main Methods:
- Murine ESCs (Oct4B2-ESC) were cultured in liquid marbles formed on a PTFE particle bed.
- EB formation and spontaneous cardiac mesoderm marker expression were analyzed.
- Differentiated EBs were plated and assessed for cardiomyocyte markers and functionality.
Main Results:
- Uniform ESC aggregates (EBs) formed within liquid marbles in 3 days.
- Suspended EBs expressed precardiac mesoderm markers (Flk-1, Gata4, Nkx2.5) and showed spontaneous contraction.
- Plated EBs differentiated into functional cardiomyocytes, expressing mature markers (MLC2a, MLC2v, α-actinin, cTnT) with >60% exhibiting spontaneous contraction.
Conclusions:
- Liquid marbles provide a suitable microenvironment for EB formation and cardiac differentiation.
- This technique facilitates spontaneous cardiogenesis without exogenous growth factors.
- The liquid-marble approach is an efficient, cost-effective method for generating EBs and cardiomyocytes.
