Introduction: The biological and mechanical properties of circulating tumor cells (CTCs) in combination with the hemodynamics affect the preference of metastatic sites in the vasculature. Despite the extensive literature on the effects of biological properties on cell adhesion, the effects of hydrodynamic forces on primary attachment remains an active area of research. Here, using simulations in conjunction with experimentation, we provide new insight into the interplay of CTCs dynamics and local hydrodynamics. Methods: A flow experiment of CTC attachment was performed within a bioprinted, double branching endothelialized vessel. Simulations of fluid flow and CTC transport in the reconstructed and idealized bifurcated vessel were respectively performed by HARVEY, our in-house massively parallel computational fluid dynamics solver. HARVEY is based on the lattice Boltzmann and finite element methods to model the fluid and cells dynamics. The immersed boundary method is employed for resolving the fluid–structure interaction. Results: CTC attachment was quantified experimentally at all regions of the complex vessel. The results demonstrate a clear preference for CTCs to attach at the branch points. To elucidate the effect of the vessel topology on the location of attachment, a fluid-only simulation was performed assessing the differences in the hydrodynamics along the vessel. CTC transport in idealized bifurcated vessels was subsequently studied to examine the effects of cell deformability on the local hydrodynamics patterns and, thus, the preference of attachment sites. Conclusions: The current work provides evidence on the correlation of the hydrodynamics forces arising from the vessel topology and CTC properties on the attachment regions.
Pepona, Marianna, et al. "Investigating the Interaction Between Circulating Tumor Cells and Local Hydrodynamics via Experiment and Simulations." Cellular and Molecular Bioengineering, vol. 13, no. 5, Oct. 2020. https://doi.org/10.1007/s12195-020-00656-7
Pepona, Marianna, Balogh, Peter, Puleri, Daniel F., Hynes, William F., Robertson, Claire, Dubbin, Karen, Alvarado, Javier, Moya, Monica L., & Randles, Amanda (2020). Investigating the Interaction Between Circulating Tumor Cells and Local Hydrodynamics via Experiment and Simulations. Cellular and Molecular Bioengineering, 13(5). https://doi.org/10.1007/s12195-020-00656-7
Pepona, Marianna, Balogh, Peter, Puleri, Daniel F., et al., "Investigating the Interaction Between Circulating Tumor Cells and Local Hydrodynamics via Experiment and Simulations," Cellular and Molecular Bioengineering 13, no. 5 (2020), https://doi.org/10.1007/s12195-020-00656-7
@article{osti_1698288,
author = {Pepona, Marianna and Balogh, Peter and Puleri, Daniel F. and Hynes, William F. and Robertson, Claire and Dubbin, Karen and Alvarado, Javier and Moya, Monica L. and Randles, Amanda},
title = {Investigating the Interaction Between Circulating Tumor Cells and Local Hydrodynamics via Experiment and Simulations},
annote = {Introduction: The biological and mechanical properties of circulating tumor cells (CTCs) in combination with the hemodynamics affect the preference of metastatic sites in the vasculature. Despite the extensive literature on the effects of biological properties on cell adhesion, the effects of hydrodynamic forces on primary attachment remains an active area of research. Here, using simulations in conjunction with experimentation, we provide new insight into the interplay of CTCs dynamics and local hydrodynamics. Methods: A flow experiment of CTC attachment was performed within a bioprinted, double branching endothelialized vessel. Simulations of fluid flow and CTC transport in the reconstructed and idealized bifurcated vessel were respectively performed by HARVEY, our in-house massively parallel computational fluid dynamics solver. HARVEY is based on the lattice Boltzmann and finite element methods to model the fluid and cells dynamics. The immersed boundary method is employed for resolving the fluid–structure interaction. Results: CTC attachment was quantified experimentally at all regions of the complex vessel. The results demonstrate a clear preference for CTCs to attach at the branch points. To elucidate the effect of the vessel topology on the location of attachment, a fluid-only simulation was performed assessing the differences in the hydrodynamics along the vessel. CTC transport in idealized bifurcated vessels was subsequently studied to examine the effects of cell deformability on the local hydrodynamics patterns and, thus, the preference of attachment sites. Conclusions: The current work provides evidence on the correlation of the hydrodynamics forces arising from the vessel topology and CTC properties on the attachment regions.},
doi = {10.1007/s12195-020-00656-7},
url = {https://www.osti.gov/biblio/1698288},
journal = {Cellular and Molecular Bioengineering},
issn = {ISSN 1865-5025},
number = {5},
volume = {13},
place = {United States},
publisher = {Biomedical Engineering Society},
year = {2020},
month = {10}}
Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
Sponsoring Organization:
USDOE National Nuclear Security Administration (NNSA); National Institutes of Health (NIH); USDOE Laboratory Directed Research and Development (LDRD) Program
Grant/Contract Number:
AC52-07NA27344
OSTI ID:
1698288
Report Number(s):
LLNL-JRNL--805606; 1010633
Journal Information:
Cellular and Molecular Bioengineering, Journal Name: Cellular and Molecular Bioengineering Journal Issue: 5 Vol. 13; ISSN 1865-5025
Randles, Amanda Peters; Kale, Vivek; Hammond, Jeff
2013 IEEE International Symposium on Parallel & Distributed Processing (IPDPS), 2013 IEEE 27th International Symposium on Parallel and Distributed Processinghttps://doi.org/10.1109/IPDPS.2013.109
PASC '20: Platform for Advanced Scientific Computing Conference, Proceedings of the Platform for Advanced Scientific Computing Conferencehttps://doi.org/10.1145/3394277.3401848