논문 (학술지)
The three-dimensionality of the hiPSC-CM spheroid contributes to the variability of the field potential
등록번호 | - | SCI 구분
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※구분 : SCI(SCIE포함), 비SCI |
SCI |
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저자명 (주·공동저자) | Minki Hwang1 Su-Jin Lee; Chul-Hyun Lim; Eun Bo Shim Hyang-Ae Lee | ||
논문구분 | 국외전문학술지 | 학술지명 | Frontiers in Physiology |
ISSN | 1664-042X | 학술지 출판일자 | 2023-03-21 |
학술지 볼륨번호 | 14 | 논문페이지 | 1123190 ~ 1123190 |
학술지 임팩트팩터 | 4.755 | 기여율 | 0 % |
초록 | Background: Field potential (FP) signals from human induced pluripotent stem cell-derived cardiomyocyte (hiPSC-CM) spheroid which are used for drug safety tests in the preclinical stage are different from action potential (AP) signals and require working knowledge of the multi-electrode array (MEA) system. In this study, we developed in silico three-dimensional (3-D) models of hiPSC-CM spheroids for the simulation of field potential measurement. We compared our model simulation results against in vitro experimental data under the effect of drugs E-4031 and nifedipine. Methods: In silico 3-D models of hiPSC-CM spheroids were constructed in spherical and discoidal shapes. Tetrahedral meshes were generated inside the models, and the propagation of the action potential in the model was obtained by numerically solving the monodomain reaction-diffusion equation. An electrical model of electrode was constructed and FPs were calculated using the extracellular potentials from the AP propagations. The effects of drugs were simulated by matching the simulation results with in vitro experimental data. Results: The simulated FPs from the 3-D models of hiPSC-CM spheroids exhibited highly variable shapes depending on the stimulation and measurement locations. The values of the IC50 of E-4031 and nifedipine calculated by matching the simulated FP durations with in vitro experimental data were in line with the experimentally measured ones reported in the literature. Conclusion: The 3-D in silico models of hiPSC-CM spheroids generated highly variable FPs similar to those observed in in vitro experiments. The in silico model has the potential to complement the interpretation of the FP signals obtained from in vitro experiments. |
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