Impact of hydrodynamics on iPSC-derived cardiomyocyte differentiation processes

Jasmin J. Samaras, Bernardo Abecasis, Maria margarida Serra, Andrea Ducci, Martina Micheletti

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)

Abstract

Cardiomyocytes (CMs), derived from pluripotent stem cells (PSCs), have the potential to be used in cardiac repair. Addition of physical cues, such as electrical and mechanical stimulations, have proven to significantly effect morphology, density, cardiogenesis, maturity and functionality of differentiated CMs. This work combines rigorous fluid dynamics investigation and flow frequency analysis with iPSC differentiation experiments to identify and quantify the flow characteristics leading to a significant increase of differentiation yield. This is towards a better understanding of the physical relationship between frequency modulation and embryoid bodies suspension, and the development of dimensionless correlations applicable at larger scales. Laser Doppler Anemometry and Fast Fourier Transform analysis were used to identify characteristic flow frequencies under different agitation modes. Intermittent agitation resulted in a pattern of low intensity frequencies at reactor scale that could be controlled by varying three identified time components: rotational speed, interval and dwell times. A proof of concept biological study was undertaken, tuning the hydrodynamic environment through variation of dwell time based on the engineering study findings and a significant improvement in CM yield was obtained. This work introduces the concept of fine-tuning the physical hydrodynamic cues within a three-dimensional flow system to improve cardiomyocyte differentiation of iPSC.

Original languageEnglish
Pages (from-to)18-27
Number of pages10
JournalJournal of Biotechnology
Volume287
DOIs
Publication statusPublished - 10 Dec 2018

Keywords

  • Cardiomyocyte differentiation
  • FFT
  • Hydrodynamics
  • Induced pluripotent stem cells
  • Suspension dynamics

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