Abstract
In this paper, we develop a multi-scale model to simulate the aggregation of platelets in a low shear-coefficient flow. In this multi-scale model, the Morse potential is used to describe the interaction between the \(\alpha \mathrm {II}b\beta 3\) receptor and fibrinogen, the dissipative particle dynamics (DPD) is used to simulate fluids on the macro-scale, and the coarse-grained molecular dynamics (CGMD) is used to simulate the fine-scale receptors’ biochemical reactions. Moreover, with the assistance of the high-throughput simulations on the heterogeneous cluster, we calibrate the parameters for the Morse potential which are critical in the proper simulation of the aggregation of platelets. With this model, we simulate the long-term behaviour of thrombus formation constructed by many platelets. Our simulating results are consistent with in-vitro experiments on contact areas and detaching forces. Moreover, it reduces the computational cost significantly.
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Acknowledgment
The research was supported in part by NSFC Grant 12071496, Guangdong Provincial NSF Grant 2017B030311001, Guangdong Province Key Laboratory of Computational Science at the Sun Yat-sen University (2020B1212060032), and Nantong Science & Technology Research Plan (No. JC2021133). This work also benefited from resources made available at the National Supercomputer Center in Kunshan.
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Xu, Z., Zou, Q. (2022). A Molecular Dynamics Based Multi-scale Platelet Aggregation Model and Its High-Throughput Simulation. In: Shen, H., et al. Parallel and Distributed Computing, Applications and Technologies. PDCAT 2021. Lecture Notes in Computer Science(), vol 13148. Springer, Cham. https://doi.org/10.1007/978-3-030-96772-7_8
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