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Chien HC, Wang YL, Tu YC, Tsui PF, Tsai MC. Activation of heme oxygenase-1 by laminar shear stress ameliorates high glucose-induced endothelial cell and smooth muscle cell dysfunction. J Cell Biochem 2024. [PMID: 38591551 DOI: 10.1002/jcb.30563] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2023] [Revised: 03/05/2024] [Accepted: 03/24/2024] [Indexed: 04/10/2024]
Abstract
High glucose (HG)-induced endothelial cell (EC) and smooth muscle cell (SMC) dysfunction is critical in diabetes-associated atherosclerosis. However, the roles of heme oxygenase-1 (HO-1), a stress-response protein, in hemodynamic force-generated shear stress and HG-induced metabolic stress remain unclear. This investigation examined the cellular effects and mechanisms of HO-1 under physiologically high shear stress (HSS) in HG-treated ECs and adjacent SMCs. We found that exposure of human aortic ECs to HSS significantly increased HO-1 expression; however, this upregulation appeared to be independent of adenosine monophosphate-activated protein kinase, a regulator of HO-1. Furthermore, HSS inhibited the expression of HG-induced intercellular adhesion molecule-1, vascular cell adhesion molecule-1, and reactive oxygen species (ROS) production in ECs. In an EC/SMC co-culture, compared with static conditions, subjecting ECs close to SMCs to HSS and HG significantly suppressed SMC proliferation while increasing the expression of physiological contractile phenotype markers, such as α-smooth muscle actin and serum response factor. Moreover, HSS and HG decreased the expression of vimentin, an atherogenic synthetic phenotypic marker, in SMCs. Transfecting ECs with HO-1-specific small interfering (si)RNA reversed HSS inhibition on HG-induced inflammation and ROS production in ECs. Similarly, reversed HSS inhibition on HG-induced proliferation and synthetic phenotype formation were observed in co-cultured SMCs. Our findings provide insights into the mechanisms underlying EC-SMC interplay during HG-induced metabolic stress. Strategies to promote HSS in the vessel wall, such as continuous exercise, or the development of HO-1 analogs and mimics of the HSS effect, could provide an effective approach for preventing and treating diabetes-related atherosclerotic vascular complications.
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Affiliation(s)
- Hung-Che Chien
- Department of Physiology and Biophysics, Graduate Institute of Physiology, National Defense Medical Center, Taipei, Taiwan
| | - Yu-Lin Wang
- Center of General Education, Southern Taiwan University of Science and Technology, Tainan, Taiwan
- School of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan
- Department of Physical Medicine and Rehabilitation, Chi Mei Medical Center, Tainan, Taiwan
| | - Yun-Chin Tu
- Department of Physiology and Biophysics, Graduate Institute of Physiology, National Defense Medical Center, Taipei, Taiwan
| | - Pi-Fen Tsui
- Department of Oncology, Lombardi Comprehensive Cancer Center, Georgetown University, Washington, District of Columbia, USA
| | - Min-Chien Tsai
- Department of Physiology and Biophysics, Graduate Institute of Physiology, National Defense Medical Center, Taipei, Taiwan
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Li Z, Li JN, Li Q, Liu C, Zhou LH, Zhang Q, Xu Y. Cholesterol efflux regulator ABCA1 exerts protective role against high shear stress-induced injury of HBMECs via regulating PI3K/Akt/eNOS signaling. BMC Neurosci 2022; 23:61. [PMCID: PMC9636808 DOI: 10.1186/s12868-022-00748-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2022] [Accepted: 10/26/2022] [Indexed: 11/08/2022] Open
Abstract
Background In brain, microvascular endothelial cells are exposed to various forces, including shear stress (SS). However, little is known about the effects of high shear stress (HSS) on human brain microvascular endothelial cells (HBMECs) and the underlying mechanism. The cholesterol efflux regulator ATP-binding cassette subfamily A member 1 (ABCA1) has been demonstrated to exert protective effect on HBMECs. However, whether ABCA1 is involved in the mechanism underneath the effect of HSS on HBMECs remains obscure. In the present study, a series of experiments were performed to better understand the effect of HSS on cellular processes of HBMECs and the possible involvement of ABCA1 and PI3K/Akt/eNOS in the underlying mechanisms. Results HBMECs were subjected to physiological SS (PSS) or high SS (HSS). Cell migration was evaluated using Transwell assay. Apoptotic HBMECs were detected by flow cytometry or caspase3/7 activity. IL-1β, IL-6, MCP-1 and TNF-α levels were measured by ELISA. RT-qPCR and western blotting were used for mRNA and protein expression detection, respectively. ROS and NO levels were detected using specific detection kits. Compared to PSS, HBMECs exhibited decreased cell viability and migration and increased cell apoptosis, increased levels of inflammatory cytokines, and improved ROS and NO productions after HSS treatment. Moreover, HSS downregulated ABCA1 but upregulated the cholesterol efflux-related proteins MMP9, AQP4, and CYP46 and activated PI3K/Akt/eNOS pathway. Overexpression of ABCA1 in HBMECS inhibited PI3K/Akt/eNOS pathway and counteracted the deleterious effects of HSS. Contrary effects were observed by ABCA1 silencing. Inhibiting PI3K/Akt/eNOS pathway mimicked ABCA1 effects, suggesting that ABCA1 protects HBMECs from HSS via PI3K/Akt/eNOS signaling. Conclusion These results advanced our understanding on the mechanisms of HSS on HBMECs and potentiated ABCA1/PI3K/Akt/eNOS pathway as therapeutic target for cerebrovascular diseases. Supplementary Information The online version contains supplementary material available at 10.1186/s12868-022-00748-2.
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Affiliation(s)
- Zhe Li
- grid.73113.370000 0004 0369 1660Present Address: Neurovascular Center, Changhai Hospital, Naval Medical University, No. 168 Changhai Rd, Shanghai, 200433 China
| | - Jia-Nan Li
- Department of Neurosurgery, General Hospital of Northern Theater Command, 83 Wenhua Road, Shenyang, Liaoning Province China
| | - Qiang Li
- grid.73113.370000 0004 0369 1660Present Address: Neurovascular Center, Changhai Hospital, Naval Medical University, No. 168 Changhai Rd, Shanghai, 200433 China
| | - Chun Liu
- grid.24516.340000000123704535Present Address: Department of Cerebrovascular Diseases, Blue Cross Brain Hospital Affiliated to Tongji University, No. 2880 Qixin Road, Shanghai, 201101 China
| | - Lin-Hua Zhou
- grid.24516.340000000123704535Present Address: Department of Cerebrovascular Diseases, Blue Cross Brain Hospital Affiliated to Tongji University, No. 2880 Qixin Road, Shanghai, 201101 China
| | - Qi Zhang
- grid.24516.340000000123704535Present Address: Department of Cerebrovascular Diseases, Blue Cross Brain Hospital Affiliated to Tongji University, No. 2880 Qixin Road, Shanghai, 201101 China
| | - Yi Xu
- grid.73113.370000 0004 0369 1660Present Address: Neurovascular Center, Changhai Hospital, Naval Medical University, No. 168 Changhai Rd, Shanghai, 200433 China
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Oota-Ishigaki A, Maruyama O, Sakota D, Kosaka R, Hijikata W, Nishida M. Quantitative investigation of platelet aggregation under high shear force for anti-platelet aggregation in vitro tests. Int J Artif Organs 2021; 44:687-693. [PMID: 34058917 DOI: 10.1177/03913988211020765] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Blood pumps are often used for hemofiltration in patients with renal failure. To design effective centrifugal blood pumps for hemofiltration, it is important to suppress clogging caused by platelet aggregation. However, the optimal conditions for conducting anti-platelet aggregation tests in vitro have not yet been established. This study aimed to quantify the effect of the shear loading value and shear loading time on platelet aggregation and determine the optimal conditions for anti-platelet aggregation testing in vitro. To quantitatively evaluate platelet aggregation in terms of the negative logarithm-platelet aggregation threshold index (NL-PATI), which reflects the propensity of residual platelets to aggregate after shear loading, the following parameters were examined: blood collection method (collected from porcine vein using a syringe or collected from a slaughterhouse), type of anticoagulant (sodium citrate or heparin), shear rate, and shear time. The results showed that platelet aggregation in porcine blood increased under a high shear load applied at shear rates of approximately 20,000 s-1 or higher for 30 s. Platelet aggregation propensity was 2-3 times higher in heparin-anticoagulated blood than in sodium citrate-anticoagulated blood. Moreover, platelet aggregation was 1.5-2 times more in blood collected from the slaughterhouse than in syringe-collected blood. Testing with an integrated shear time of 30 s or less in relation to the total blood volume may be effective for conducting in vitro circulation experiments using hemofiltration blood pumps. The conditions established in this study may be useful for hemocompatibility testing of cardiovascular devices based on NL-PATI.
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Affiliation(s)
- Akiko Oota-Ishigaki
- National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Ibaraki, Japan
| | - Osamu Maruyama
- National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Ibaraki, Japan
| | - Daisuke Sakota
- National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Ibaraki, Japan
| | - Ryo Kosaka
- National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Ibaraki, Japan
| | | | - Masahiro Nishida
- National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Ibaraki, Japan
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Wang Y, Qiu J, Luo S, Xie X, Zheng Y, Zhang K, Ye Z, Liu W, Gregersen H, Wang G. High shear stress induces atherosclerotic vulnerable plaque formation through angiogenesis. Regen Biomater 2016; 3:257-67. [PMID: 27482467 PMCID: PMC4966293 DOI: 10.1093/rb/rbw021] [Citation(s) in RCA: 49] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2016] [Revised: 05/15/2016] [Accepted: 05/19/2016] [Indexed: 12/12/2022] Open
Abstract
Rupture of atherosclerotic plaques causing thrombosis is the main cause of acute coronary syndrome and ischemic strokes. Inhibition of thrombosis is one of the important tasks developing biomedical materials such as intravascular stents and vascular grafts. Shear stress (SS) influences the formation and development of atherosclerosis. The current review focuses on the vulnerable plaques observed in the high shear stress (HSS) regions, which localizes at the proximal region of the plaque intruding into the lumen. The vascular outward remodelling occurs in the HSS region for vascular compensation and that angiogenesis is a critical factor for HSS which induces atherosclerotic vulnerable plaque formation. These results greatly challenge the established belief that low shear stress is important for expansive remodelling, which provides a new perspective for preventing the transition of stable plaques to high-risk atherosclerotic lesions.
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Affiliation(s)
- Yi Wang
- Key Laboratory for Biorheological Science and Technology of Ministry of Education, State and Local Joint Engineering Laboratory for Vascular Implants, Bioengineering College of Chongqing University, Chongqing, 400030, China; Taiji Group Co, Ltd, Chongqing, 401147, China
| | - Juhui Qiu
- Key Laboratory for Biorheological Science and Technology of Ministry of Education, State and Local Joint Engineering Laboratory for Vascular Implants, Bioengineering College of Chongqing University, Chongqing, 400030, China; Taiji Group Co, Ltd, Chongqing, 401147, China
| | - Shisui Luo
- Key Laboratory for Biorheological Science and Technology of Ministry of Education, State and Local Joint Engineering Laboratory for Vascular Implants, Bioengineering College of Chongqing University, Chongqing, 400030, China; Taiji Group Co, Ltd, Chongqing, 401147, China
| | - Xiang Xie
- Key Laboratory for Biorheological Science and Technology of Ministry of Education, State and Local Joint Engineering Laboratory for Vascular Implants, Bioengineering College of Chongqing University, Chongqing, 400030, China; Taiji Group Co, Ltd, Chongqing, 401147, China
| | - Yiming Zheng
- Key Laboratory for Biorheological Science and Technology of Ministry of Education, State and Local Joint Engineering Laboratory for Vascular Implants, Bioengineering College of Chongqing University, Chongqing, 400030, China; Taiji Group Co, Ltd, Chongqing, 401147, China
| | - Kang Zhang
- Key Laboratory for Biorheological Science and Technology of Ministry of Education, State and Local Joint Engineering Laboratory for Vascular Implants, Bioengineering College of Chongqing University, Chongqing, 400030, China; Taiji Group Co, Ltd, Chongqing, 401147, China
| | - Zhiyi Ye
- Key Laboratory for Biorheological Science and Technology of Ministry of Education, State and Local Joint Engineering Laboratory for Vascular Implants, Bioengineering College of Chongqing University, Chongqing, 400030, China; Taiji Group Co, Ltd, Chongqing, 401147, China
| | - Wanqian Liu
- Key Laboratory for Biorheological Science and Technology of Ministry of Education, State and Local Joint Engineering Laboratory for Vascular Implants, Bioengineering College of Chongqing University, Chongqing, 400030, China; Taiji Group Co, Ltd, Chongqing, 401147, China
| | - Hans Gregersen
- Key Laboratory for Biorheological Science and Technology of Ministry of Education, State and Local Joint Engineering Laboratory for Vascular Implants, Bioengineering College of Chongqing University, Chongqing, 400030, China; Taiji Group Co, Ltd, Chongqing, 401147, China
| | - Guixue Wang
- Key Laboratory for Biorheological Science and Technology of Ministry of Education, State and Local Joint Engineering Laboratory for Vascular Implants, Bioengineering College of Chongqing University, Chongqing, 400030, China; Taiji Group Co, Ltd, Chongqing, 401147, China
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Kokkinos D, Dakhil H, Wierschem A, Briesen H, Braun A. Deformation and rupture of Dunaliella salina at high shear rates without the use of thickeners. Biorheology 2016; 53:1-11. [PMID: 26967951 DOI: 10.3233/bir-15057] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
BACKGROUND High-density cultures require operating below the critical threshold of shear stress, in order to avoid reducing the specific growth rate of the cells. When determining this threshold, direct inspection of the cells in flow provides insight into the conditions of shearing. OBJECTIVE Aim of this study was using a novel rheo-optical setup for the observation of cells in laminar shear flow and the determination of the critical shear stress required to damage them in their natural environment. METHODS Dunaliella salina cells were sheared and observed in flow for shear stresses of up to 90 Pa, at ambient temperature, without adding thickeners. The critical shear stress was determined by fitting a hydrodynamics-based criterion to the experimental data on the percentage of deformed cells after shearing. RESULTS Single cells, clusters and strings of cells were visible in shear flow. The strings formed at maximum shear stresses of 10 Pa or higher. Cells lost motility for maximum shear stresses higher than 15 Pa, and more than 80% of the cells were deformed at maximum shear stresses higher than 60 Pa. The estimated critical shear stress was 18 Pa. CONCLUSIONS Shear stresses higher than 18 Pa should be avoided when cultivating D. salina.
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Affiliation(s)
- Dimitrios Kokkinos
- Wissenschaftszentrum Weihenstephan für Ernährung und Landnutzung, Lehrstuhl für Systemverfahrenstechnik, Technical University of Munich (TUM), Freising, Germany
| | - Haider Dakhil
- Institute of Fluid Mechanics, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Erlangen, Germany.,Faculty of Engineering, University of Kufa, Kufa, Najaf, Iraq
| | - Andreas Wierschem
- Institute of Fluid Mechanics, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Erlangen, Germany
| | - Heiko Briesen
- Wissenschaftszentrum Weihenstephan für Ernährung und Landnutzung, Lehrstuhl für Systemverfahrenstechnik, Technical University of Munich (TUM), Freising, Germany
| | - André Braun
- Wissenschaftszentrum Weihenstephan für Ernährung und Landnutzung, Lehrstuhl für Systemverfahrenstechnik, Technical University of Munich (TUM), Freising, Germany
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