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Chen ZZ, Yuan WM, Xiang C, Zeng DP, Liu B, Qin KR. A microfluidic device with spatiotemporal wall shear stress and ATP signals to investigate the intracellular calcium dynamics in vascular endothelial cells. Biomech Model Mechanobiol 2018; 18:189-202. [PMID: 30187350 DOI: 10.1007/s10237-018-1076-x] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2018] [Accepted: 08/31/2018] [Indexed: 11/28/2022]
Abstract
Intracellular calcium dynamics plays an important role in the regulation of vascular endothelial cellular functions. In order to probe the intracellular calcium dynamic response under synergistic effect of wall shear stress (WSS) and adenosine triphosphate (ATP) signals, a novel microfluidic device, which provides the adherent vascular endothelial cells (VECs) on the bottom of microchannel with WSS signal alone, ATP signal alone, and different combinations of WSS and ATP signals, is proposed based upon the principles of fluid mechanics and mass transfer. The spatiotemporal profiles of extracellular ATP signals from numerical simulation and experiment studies validate the implementation of our design. The intracellular calcium dynamics of VECs in response to either WSS signal or ATP signal alone, and different combinations of WSS and ATP signals have been investigated. It is found that the synergistic effect of the WSS and ATP signals plays a more significant role in the signal transduction of VECs rather than that from either WSS signal or ATP signal alone. In particular, under the combined stimuli of WSS and ATP signals with different amplitudes and frequencies, the amplitudes and frequencies of the intracellular Ca2+ dynamic signals are observed to be closely related to the amplitudes and frequencies of WSS or ATP signals.
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Affiliation(s)
- Zong-Zheng Chen
- School of Optoelectronic Engineering and Instrumentation Science and School of Biomedical Engineering, Dalian University of Technology, No. 2, Linggong Rd, Dalian, 116024, Liaoning Province, China.,First Affiliated Hospital of Shenzhen University (Shenzhen Second People's Hospital), No.3002,Sungang Rd, Shenzhen, 518035, Guangdong Province, China
| | - Wei-Mo Yuan
- School of Optoelectronic Engineering and Instrumentation Science and School of Biomedical Engineering, Dalian University of Technology, No. 2, Linggong Rd, Dalian, 116024, Liaoning Province, China
| | - Cheng Xiang
- Department of Electrical and Computer Engineering, National University of Singapore, Singapore, 117576, Singapore
| | - De-Pei Zeng
- School of Optoelectronic Engineering and Instrumentation Science and School of Biomedical Engineering, Dalian University of Technology, No. 2, Linggong Rd, Dalian, 116024, Liaoning Province, China
| | - Bo Liu
- School of Optoelectronic Engineering and Instrumentation Science and School of Biomedical Engineering, Dalian University of Technology, No. 2, Linggong Rd, Dalian, 116024, Liaoning Province, China
| | - Kai-Rong Qin
- School of Optoelectronic Engineering and Instrumentation Science and School of Biomedical Engineering, Dalian University of Technology, No. 2, Linggong Rd, Dalian, 116024, Liaoning Province, China.
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Chen ZZ, Gao ZM, Zeng DP, Liu B, Luan Y, Qin KR. A Y-Shaped Microfluidic Device to Study the Combined Effect of Wall Shear Stress and ATP Signals on Intracellular Calcium Dynamics in Vascular Endothelial Cells. Micromachines (Basel) 2016; 7:mi7110213. [PMID: 30404384 PMCID: PMC6190056 DOI: 10.3390/mi7110213] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/13/2016] [Revised: 11/17/2016] [Accepted: 11/18/2016] [Indexed: 12/02/2022]
Abstract
The intracellular calcium dynamics in vascular endothelial cells (VECs) in response to wall shear stress (WSS) and/or adenosine triphosphate (ATP) have been commonly regarded as an important factor in regulating VEC function and behavior including proliferation, migration and apoptosis. However, the effects of time-varying ATP signals have been usually neglected in the past investigations in the field of VEC mechanobiology. In order to investigate the combined effects of WSS and dynamic ATP signals on the intracellular calcium dynamic in VECs, a Y-shaped microfluidic device, which can provide the cultured cells on the bottom of its mixing micro-channel with stimuli of WSS signal alone and different combinations of WSS and ATP signals in one single micro-channel, is proposed. Both numerical simulation and experimental studies verify the feasibility of its application. Cellular experimental results also suggest that a combination of WSS and ATP signals rather than a WSS signal alone might play a more significant role in VEC Ca2+ signal transduction induced by blood flow.
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Affiliation(s)
- Zong-Zheng Chen
- Department of Biomedical Engineering, Dalian University of Technology, Dalian 116024, China.
| | - Zheng-Ming Gao
- Department of Biomedical Engineering, Dalian University of Technology, Dalian 116024, China.
| | - De-Pei Zeng
- Department of Biomedical Engineering, Dalian University of Technology, Dalian 116024, China.
| | - Bo Liu
- Department of Biomedical Engineering, Dalian University of Technology, Dalian 116024, China.
| | - Yong Luan
- Department of Anesthesiology, The First Affiliated Hospital of Dalian Medical University, Dalian 116011, China.
| | - Kai-Rong Qin
- Department of Biomedical Engineering, Dalian University of Technology, Dalian 116024, China.
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