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Zhang J, Li Q, Liao P, Xiao R, Zhu L, Hu Q. Calcium sensing receptor: A promising therapeutic target in pulmonary hypertension. Life Sci 2024; 340:122472. [PMID: 38290572 DOI: 10.1016/j.lfs.2024.122472] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2023] [Revised: 01/24/2024] [Accepted: 01/25/2024] [Indexed: 02/01/2024]
Abstract
Pulmonary hypertension (PH) is characterized by elevation of pulmonary arterial pressure and pulmonary vascular resistance. The increased pulmonary arterial pressure and pulmonary vascular resistance due to sustained pulmonary vasoconstriction and pulmonary vascular remodeling can lead to right heart failure and eventual death. A rise in intracellular Ca2+ concentration ([Ca2+]i) and enhanced pulmonary arterial smooth muscle cells (PASMCs) proliferation contribute to pulmonary vasoconstriction and pulmonary vascular remodeling. Recent studies demonstrated that extracellular calcium sensing receptor (CaSR) as a G-protein coupled receptor participates in [Ca2+]i increase induced by hypoxia in the experimental animals of PH and in PH patients. Pharmacological blockade or gene knockout of CaSR significantly attenuates the development of PH. This review will aim to discuss and update the pathogenicity of CaSR attributed to onset and progression in PH.
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Affiliation(s)
- Jiwei Zhang
- Department of Pathology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China; Key Laboratory of Pulmonary Diseases of Ministry of Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Qinli Li
- Department of Clinical Laboratory Medicine, People's Hospital of Dongxihu District Wuhan City and Union Dongxihu Hospital, Huazhong University of Science and Technology, Wuhan, China
| | - Pu Liao
- Department of Pathology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China; Key Laboratory of Pulmonary Diseases of Ministry of Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Rui Xiao
- Key Laboratory of Pulmonary Diseases of Ministry of Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China; Department of Pathophysiology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Liping Zhu
- Key Laboratory of Pulmonary Diseases of Ministry of Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China; Department of Pathophysiology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Qinghua Hu
- Key Laboratory of Pulmonary Diseases of Ministry of Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China; Department of Pathophysiology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.
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2
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Timour G, Fréderic V, Olivier S, Shango DN. Nicardipine-induced acute respiratory failure: Case report and literature review. Clin Case Rep 2023; 11:e7186. [PMID: 37143457 PMCID: PMC10151601 DOI: 10.1002/ccr3.7186] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2022] [Revised: 12/07/2022] [Accepted: 03/22/2023] [Indexed: 05/06/2023] Open
Abstract
Hypoxic pulmonary vasoconstriction (HPV) is a major physiological mechanism that prevents the development of hypoxemia secondary to a regional decrease in the ventilation-perfusion ratio (the intrapulmonary shunt effect). Calcium plays a critical role in the cellular response to hypoxia and the regulation of the pulmonary vascular tone. Therefore, calcium channel antagonists such as nicardipine have the potential to interfere with the pulmonary response to hypoxia, increasing intrapulmonary blood shunt and thus worsening underlying hypoxemia. This article reports the case of a 40-year-old man suffering from lobar pneumonia, who developed a rapidly progressing hypoxemia after starting nicardipine infusion for blood pressure control. After ruling out all major causes of hypoxemic respiratory failure, the involvement of the calcium channel antagonist was strongly suspected. Hypoxemia caused by HPV release is an underreported side effect of calcium channel blockers. There are few clinical reports that describe the occurrence of this adverse event, and to our knowledge, only one other publication describes a patient suffering from infectious pneumopathy. In this article, we discuss the cellular mechanisms behind the HPV, as well as the pharmacology of calcium channel antagonists and their involvement in the development of acute respiratory failure. The purpose of this report is to remind clinicians dealing with patients affected by acute hypoxemia that pharmacologic HPV inhibition should be considered as part of the differential diagnosis, thus avoiding unnecessary costly and time-consuming assessments.
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Affiliation(s)
- Gizzatullin Timour
- Department of Intensive Care CentreHospitalier de Wallonie Picarde (CHwapi)TournaiBelgium
| | - Vallot Fréderic
- Department of Intensive Care CentreHospitalier de Wallonie Picarde (CHwapi)TournaiBelgium
| | - Simonet Olivier
- Department of Intensive Care CentreHospitalier de Wallonie Picarde (CHwapi)TournaiBelgium
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3
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Xiao R, Liu J, Luo S, Yu Z, Zhang J, Lv Y, Li J, Ruiz M, Dupuis J, Hu Q, Zhu L. Orally-administrated mitochondria attenuate pulmonary hypertension with the aid of erythrocytes as carriers. Clin Transl Med 2022; 12:e1033. [PMID: 36149749 PMCID: PMC9505751 DOI: 10.1002/ctm2.1033] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2022] [Revised: 08/05/2022] [Accepted: 08/09/2022] [Indexed: 11/05/2022] Open
Affiliation(s)
- Rui Xiao
- Department of Pathophysiology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.,Key Laboratory of Pulmonary Diseases of Ministry of Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Jie Liu
- Department of Pathophysiology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.,Key Laboratory of Pulmonary Diseases of Ministry of Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Shengquan Luo
- Department of Pathophysiology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.,Key Laboratory of Pulmonary Diseases of Ministry of Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Zhe Yu
- Department of Pathophysiology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.,Key Laboratory of Pulmonary Diseases of Ministry of Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Jiwei Zhang
- Key Laboratory of Pulmonary Diseases of Ministry of Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.,Department of Pathology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Yankai Lv
- Key Laboratory of Pulmonary Diseases of Ministry of Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.,Department of Pathology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Jiansha Li
- Key Laboratory of Pulmonary Diseases of Ministry of Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.,Department of Pathology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Matthieu Ruiz
- Department of Nutrition, Université de Montréal, Montreal, Canada.,Montreal Heart Institute, Montreal, Canada
| | - Jocelyn Dupuis
- Montreal Heart Institute, Montreal, Canada.,Department of medicine, Université de Montréal, Montreal, Canada
| | - Qinghua Hu
- Department of Pathophysiology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.,Key Laboratory of Pulmonary Diseases of Ministry of Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Liping Zhu
- Department of Pathophysiology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.,Key Laboratory of Pulmonary Diseases of Ministry of Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
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4
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Liu B, Wei YP, Fan X, Hu X, Chen Z, Liu X, Xu Y, Wang L, Wang T, Ruiz M, Dupuis J, Yuan P, Liu J, Huang S, Zhu L, Jing ZC, Hu Q. Calcium Sensing Receptor Variants Increase Pulmonary Hypertension Susceptibility. Hypertension 2022; 79:1348-1360. [PMID: 35477244 DOI: 10.1161/hypertensionaha.121.18399] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
BACKGROUND Pulmonary arterial hypertension is an incurable disease, in which the extracellular CaSR (calcium sensing receptor) is mechanistically important. This study was aimed to genetically link the CaSR gene and function to the disease severity. METHODS Sanger sequencing, Sugen/hypoxia pulmonary arterial hypertension rat model, CaSR mutated rat, transcriptional reporter assay and measurement of CaSR activity were used. RESULTS Sanger sequencing identified a significant association between the variant rs1042636(A>G), located in CaSR exon 7, and idiopathic pulmonary arterial hypertension (IPAH) formation in patients. The frequency of 2968G homozygotes was higher in patients with IPAH compared with healthy individuals (23.6% versus 17.5%; P=0.001, OR=1.864), and the minor alleles of rs6776158, rs1048213, and rs9883099, located in CaSR promoter, raised the IPAH odds ratio to 2.173. Patients with IPAH carrying heterozygotes or homozygotes genotype of rs1042636 showed markedly higher pulmonary artery pressure and reduced survival compared with individuals carrying the wild-type allele. The minor alleles of rs6776158, rs1048213, and rs9883099 increased CaSR expression in reporter assay. In Sugen/hypoxia pulmonary arterial hypertension rats, the point mutation replicating rs1042636 found in IPAH exacerbated pulmonary arterial hypertension severity by promoting the overexpression and the enhanced activity of CaSR. CONCLUSIONS Our functional genomic analysis thus indicates that the CaSR minor alleles of rs1042636, rs6776158, rs1048213, and rs9883099 contribute to the development and severity of IPAH. These findings may benefit clinical prognosis and treatment for IPAH.
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Affiliation(s)
- Bingxun Liu
- Department of Pathophysiology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology (HUST), Wuhan, China (B.L., X.F., Z.C., X.L.,Y.X., L.Z., Q.H.)
| | - Yun-Peng Wei
- Department of Cardiology, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China (Y.-P.W., Z.-C.J.)
| | - Xiaohang Fan
- Department of Pathophysiology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology (HUST), Wuhan, China (B.L., X.F., Z.C., X.L.,Y.X., L.Z., Q.H.).,Key Laboratory of Pulmonary Diseases of Ministry of Health, Tongji Medical College, HUST, Wuhan, China (B.X., X.F., X.H., Z.C., X.L., Y.X., L.W., T.W., L.Z., Q.H.)
| | - Xiaoyi Hu
- Key Laboratory of Pulmonary Diseases of Ministry of Health, Tongji Medical College, HUST, Wuhan, China (B.X., X.F., X.H., Z.C., X.L., Y.X., L.W., T.W., L.Z., Q.H.).,Department of Respiratory and Critical Care Medicine, Tongji Hospital; Tongji Medical College, HUST, Wuhan, China (X.H., L.W., T.W.)
| | - Zeshuai Chen
- Department of Pathophysiology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology (HUST), Wuhan, China (B.L., X.F., Z.C., X.L.,Y.X., L.Z., Q.H.).,Key Laboratory of Pulmonary Diseases of Ministry of Health, Tongji Medical College, HUST, Wuhan, China (B.X., X.F., X.H., Z.C., X.L., Y.X., L.W., T.W., L.Z., Q.H.)
| | - Xiaoyuan Liu
- Department of Pathophysiology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology (HUST), Wuhan, China (B.L., X.F., Z.C., X.L.,Y.X., L.Z., Q.H.).,Key Laboratory of Pulmonary Diseases of Ministry of Health, Tongji Medical College, HUST, Wuhan, China (B.X., X.F., X.H., Z.C., X.L., Y.X., L.W., T.W., L.Z., Q.H.)
| | - Yan Xu
- Department of Pathophysiology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology (HUST), Wuhan, China (B.L., X.F., Z.C., X.L.,Y.X., L.Z., Q.H.).,Key Laboratory of Pulmonary Diseases of Ministry of Health, Tongji Medical College, HUST, Wuhan, China (B.X., X.F., X.H., Z.C., X.L., Y.X., L.W., T.W., L.Z., Q.H.)
| | - Lu Wang
- Key Laboratory of Pulmonary Diseases of Ministry of Health, Tongji Medical College, HUST, Wuhan, China (B.X., X.F., X.H., Z.C., X.L., Y.X., L.W., T.W., L.Z., Q.H.).,Department of Respiratory and Critical Care Medicine, Tongji Hospital; Tongji Medical College, HUST, Wuhan, China (X.H., L.W., T.W.)
| | - Tao Wang
- Key Laboratory of Pulmonary Diseases of Ministry of Health, Tongji Medical College, HUST, Wuhan, China (B.X., X.F., X.H., Z.C., X.L., Y.X., L.W., T.W., L.Z., Q.H.).,Department of Respiratory and Critical Care Medicine, Tongji Hospital; Tongji Medical College, HUST, Wuhan, China (X.H., L.W., T.W.)
| | - Matthieu Ruiz
- Department of Nutrition, Université de Montréal, Canada (M.R.).,Montreal Heart Institute, Québec, Canada (M.R., J.D.)
| | - Jocelyn Dupuis
- Montreal Heart Institute, Québec, Canada (M.R., J.D.).,Department of medicine, Université de Montréal, Québec, Canada (J.D.)
| | - Ping Yuan
- Department of Cardiopulmonary Circulation, Shanghai Pulmonary Hospital, Tongji University School of Medicine, Shanghai' China (P.Y., J.L.)
| | - Jinming Liu
- Department of Cardiopulmonary Circulation, Shanghai Pulmonary Hospital, Tongji University School of Medicine, Shanghai' China (P.Y., J.L.)
| | - Songling Huang
- Department of Clinical Laboratory, the First Affiliate Hospital of Kunming Medical University, Kunming, China (S.H.)
| | - Liping Zhu
- Department of Pathophysiology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology (HUST), Wuhan, China (B.L., X.F., Z.C., X.L.,Y.X., L.Z., Q.H.).,Key Laboratory of Pulmonary Diseases of Ministry of Health, Tongji Medical College, HUST, Wuhan, China (B.X., X.F., X.H., Z.C., X.L., Y.X., L.W., T.W., L.Z., Q.H.)
| | - Zhi-Cheng Jing
- Department of Cardiology, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China (Y.-P.W., Z.-C.J.)
| | - Qinghua Hu
- Department of Pathophysiology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology (HUST), Wuhan, China (B.L., X.F., Z.C., X.L.,Y.X., L.Z., Q.H.).,Key Laboratory of Pulmonary Diseases of Ministry of Health, Tongji Medical College, HUST, Wuhan, China (B.X., X.F., X.H., Z.C., X.L., Y.X., L.W., T.W., L.Z., Q.H.)
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5
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Xu Z, Xie W, Feng Y, Wang Y, Li X, Liu J, Xiong Y, He Y, Chen L, Liu G, Wu Q. Positive interaction between GPER and β-alanine in the dorsal root ganglion uncovers potential mechanisms: mediating continuous neuronal sensitization and neuroinflammation responses in neuropathic pain. J Neuroinflammation 2022; 19:164. [PMID: 35729568 PMCID: PMC9215054 DOI: 10.1186/s12974-022-02524-9] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2021] [Accepted: 06/13/2022] [Indexed: 11/12/2022] Open
Abstract
Background The pathogenesis of neuropathic pain and the reasons for the prolonged unhealing remain unknown. Increasing evidence suggests that sex oestrogen differences play a role in pain sensitivity, but few studies have focused on the oestrogen receptor which may be an important molecular component contributing to peripheral pain transduction. We aimed to investigate the impact of oestrogen receptors on the nociceptive neuronal response in the dorsal root ganglion (DRG) and spinal dorsal horn using a spared nerve injury (SNI) rat model of chronic pain. Methods We intrathecally (i.t.) administered a class of oestrogen receptor antagonists and agonists intrathecal (i.t.) administrated to male rats with SNI or normal rats to identify the main receptor. Moreover, we assessed genes identified through genomic metabolic analysis to determine the key metabolism point and elucidate potential mechanisms mediating continuous neuronal sensitization and neuroinflammatory responses in neuropathic pain. The excitability of DRG neurons was detected using the patch-clamp technique. Primary culture was used to extract microglia and DRG neurons, and siRNA transfection was used to silence receptor protein expression. Immunofluorescence, Western blotting, RT-PCR and behavioural testing were used to assess the expression, cellular distribution, and actions of the main receptor and its related signalling molecules. Results Increasing the expression and function of G protein-coupled oestrogen receptor (GPER), but not oestrogen receptor-α (ERα) and oestrogen receptor-β (ERβ), in the DRG neuron and microglia, but not the dorsal spinal cord, contributed to SNI-induced neuronal sensitization. Inhibiting GPER expression in the DRG alleviated SNI-induced pain behaviours and neuroinflammation by simultaneously downregulating iNOS, IL-1β and IL-6 expression and restoring GABAα2 expression. Additionally, the positive interaction between GPER and β-alanine and subsequent β-alanine accumulation enhances pain sensation and promotes chronic pain development. Conclusion GPER activation in the DRG induces a positive association between β-alanine with iNOS, IL-1β and IL-6 expression and represses GABAα2 involved in post-SNI neuropathic pain development. Blocking GPER and eliminating β-alanine in the DRG neurons and microglia may prevent neuropathic pain development. Supplementary Information The online version contains supplementary material available at 10.1186/s12974-022-02524-9.
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Affiliation(s)
- Zhenzhen Xu
- Department of Anesthesiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Wanli Xie
- Department of Anesthesiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Yiqi Feng
- Department of Anesthesiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Yanting Wang
- Department of Anesthesiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Xia Li
- Department of Anesthesiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Jie Liu
- Department of Anesthesiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Yue Xiong
- Department of Anesthesiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Yuyao He
- Department of Anesthesiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Lu Chen
- Department of Anesthesiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Guoyang Liu
- Department of Anesthesiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Qingping Wu
- Department of Anesthesiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China.
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Hosseinian S, Ali Pour P, Kheradvar A. Prospects of mitochondrial transplantation in clinical medicine: aspirations and challenges. Mitochondrion 2022; 65:33-44. [DOI: 10.1016/j.mito.2022.04.006] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2022] [Revised: 03/24/2022] [Accepted: 04/27/2022] [Indexed: 12/21/2022]
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Chen YJ, Li Y, Guo X, Huo B, Chen Y, He Y, Xiao R, Zhu XH, Jiang DS, Wei X. Upregulation of IRF9 Contributes to Pulmonary Artery Smooth Muscle Cell Proliferation During Pulmonary Arterial Hypertension. Front Pharmacol 2021; 12:773235. [PMID: 34925032 PMCID: PMC8672195 DOI: 10.3389/fphar.2021.773235] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2021] [Accepted: 11/16/2021] [Indexed: 12/30/2022] Open
Abstract
Abnormal proliferation of pulmonary artery smooth muscle cells (PASMCs) is a critical pathological feature in the pathogenesis of pulmonary arterial hypertension (PAH), but the regulatory mechanisms remain largely unknown. Herein, we demonstrated that interferon regulatory factor 9 (IRF9) accelerated PASMCs proliferation by regulating Prohibitin 1 (PHB1) expression and the AKT-GSK3β signaling pathway. Compared with control groups, the rats treated with chronic hypoxia (CH), monocrotaline (MCT) or sugen5416 combined with chronic hypoxia (SuHx), and mice challenged with CH had significantly thickened pulmonary arterioles and hyperproliferative PASMCs. More importantly, the protein level of IRF9 was found to be elevated in the thickened medial wall of the pulmonary arterioles in all of these PAH models. Notably, overexpression of IRF9 significantly promoted the proliferation of rat and human PASMCs, as evidenced by increased cell counts, EdU-positive cells and upregulated biomarkers of cell proliferation. In contrast, knockdown of IRF9 suppressed the proliferation of rat and human PASMCs. Mechanistically, IRF9 directly restrained PHB1 expression and interacted with AKT to inhibit the phosphorylation of AKT at thr308 site, which finally led to mitochondrial dysfunction and PASMC proliferation. Unsurprisingly, MK2206, a specific inhibitor of AKT, partially reversed the PASMC proliferation inhibited by IRF9 knockdown. Thus, our results suggested that elevation of IRF9 facilitates PASMC proliferation by regulating PHB1 expression and AKT signaling pathway to affect mitochondrial function during the development of PAH, which indicated that targeting IRF9 may serve as a novel strategy to delay the pathological progression of PAH.
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Affiliation(s)
- Yong-Jie Chen
- Division of Cardiothoracic and Vascular Surgery, Sino-Swiss Heart-Lung Transplantation Institute, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.,Department of Cardiovascular Surgery, Union Hospital, Fujian Medical University, Fuzhou, China
| | - Yi Li
- Division of Cardiothoracic and Vascular Surgery, Sino-Swiss Heart-Lung Transplantation Institute, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Xian Guo
- Division of Cardiothoracic and Vascular Surgery, Sino-Swiss Heart-Lung Transplantation Institute, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Bo Huo
- Division of Cardiothoracic and Vascular Surgery, Sino-Swiss Heart-Lung Transplantation Institute, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Yue Chen
- Division of Cardiothoracic and Vascular Surgery, Sino-Swiss Heart-Lung Transplantation Institute, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Yi He
- Division of Cardiothoracic and Vascular Surgery, Sino-Swiss Heart-Lung Transplantation Institute, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Rui Xiao
- Department of Pathophysiology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.,Key Laboratory of Pulmonary Diseases of Ministry of Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Xue-Hai Zhu
- Division of Cardiothoracic and Vascular Surgery, Sino-Swiss Heart-Lung Transplantation Institute, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.,Key Laboratory of Organ Transplantation, Ministry of Education; NHC Key Laboratory of Organ Transplantation, Key Laboratory of Organ Transplantation, Chinese Academy of Medical Sciences, Wuhan, China
| | - Ding-Sheng Jiang
- Division of Cardiothoracic and Vascular Surgery, Sino-Swiss Heart-Lung Transplantation Institute, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.,Key Laboratory of Organ Transplantation, Ministry of Education; NHC Key Laboratory of Organ Transplantation, Key Laboratory of Organ Transplantation, Chinese Academy of Medical Sciences, Wuhan, China
| | - Xiang Wei
- Division of Cardiothoracic and Vascular Surgery, Sino-Swiss Heart-Lung Transplantation Institute, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.,Key Laboratory of Organ Transplantation, Ministry of Education; NHC Key Laboratory of Organ Transplantation, Key Laboratory of Organ Transplantation, Chinese Academy of Medical Sciences, Wuhan, China
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8
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Xiao R, Luo S, Zhang T, Lv Y, Wang T, Zhang J, Su Y, Ruiz M, Dupuis J, Zhu L, Hu Q. Peptide Blocking Self-Polymerization of Extracellular Calcium-Sensing Receptor Attenuates Hypoxia-Induced Pulmonary Hypertension. Hypertension 2021; 78:1605-1616. [PMID: 34565182 DOI: 10.1161/hypertensionaha.120.16712] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
[Figure: see text].
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Affiliation(s)
- Rui Xiao
- From the Department of Pathophysiology, School of Basic Medicine (R.X., S.L., T.Z., L.Z., Q.H.).,Key Laboratory of Pulmonary Diseases of Ministry of Health (R.X., S.L., T.Z., Y.L., T.W., J.Z., Y.S., L.Z., Q.H.)
| | - Shengquan Luo
- From the Department of Pathophysiology, School of Basic Medicine (R.X., S.L., T.Z., L.Z., Q.H.).,Key Laboratory of Pulmonary Diseases of Ministry of Health (R.X., S.L., T.Z., Y.L., T.W., J.Z., Y.S., L.Z., Q.H.)
| | - Ting Zhang
- From the Department of Pathophysiology, School of Basic Medicine (R.X., S.L., T.Z., L.Z., Q.H.).,Key Laboratory of Pulmonary Diseases of Ministry of Health (R.X., S.L., T.Z., Y.L., T.W., J.Z., Y.S., L.Z., Q.H.)
| | - Yankai Lv
- Key Laboratory of Pulmonary Diseases of Ministry of Health (R.X., S.L., T.Z., Y.L., T.W., J.Z., Y.S., L.Z., Q.H.).,Department of Pathology (Y.L.), Tongji Hospital
| | - Tao Wang
- Key Laboratory of Pulmonary Diseases of Ministry of Health (R.X., S.L., T.Z., Y.L., T.W., J.Z., Y.S., L.Z., Q.H.).,Department of Respiratory and Critical Care Medicine (T.W.), Tongji Hospital
| | | | - Yuan Su
- Key Laboratory of Pulmonary Diseases of Ministry of Health (R.X., S.L., T.Z., Y.L., T.W., J.Z., Y.S., L.Z., Q.H.).,Department of Respiratory and Critical Care Medicine, Union Hospital (Y.S.)
| | - Matthieu Ruiz
- Tongji Medical College, Huazhong University of Science and Technology (HUST), China; Department of Nutrition, Université de Montréal, Canada (M.R.).,Montreal Heart Institute, Canada (M.R., J.D.)
| | - Jocelyn Dupuis
- Montreal Heart Institute, Canada (M.R., J.D.).,Department of medicine, Université de Montréal, Canada (J.D.)
| | - Liping Zhu
- From the Department of Pathophysiology, School of Basic Medicine (R.X., S.L., T.Z., L.Z., Q.H.).,Key Laboratory of Pulmonary Diseases of Ministry of Health (R.X., S.L., T.Z., Y.L., T.W., J.Z., Y.S., L.Z., Q.H.)
| | - Qinghua Hu
- From the Department of Pathophysiology, School of Basic Medicine (R.X., S.L., T.Z., L.Z., Q.H.).,Key Laboratory of Pulmonary Diseases of Ministry of Health (R.X., S.L., T.Z., Y.L., T.W., J.Z., Y.S., L.Z., Q.H.)
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9
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Zhu L, Liu F, Hao Q, Feng T, Chen Z, Luo S, Xiao R, Sun M, Zhang T, Fan X, Zeng X, He J, Yuan P, Liu J, Ruiz M, Dupuis J, Hu Q. Dietary Geranylgeranyl Pyrophosphate Counteracts the Benefits of Statin Therapy in Experimental Pulmonary Hypertension. Circulation 2021; 143:1775-1792. [PMID: 33660517 DOI: 10.1161/circulationaha.120.046542] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
BACKGROUND The mevalonate pathway generates endogenous cholesterol and intermediates including geranylgeranyl pyrophosphate (GGPP). By reducing GGPP production, statins exert pleiotropic or cholesterol-independent effects. The potential regulation of GGPP homeostasis through dietary intake and the interaction with concomitant statin therapy is unknown. METHODS We developed a sensitive high-pressure liquid chromatography technique to quantify dietary GGPP and conducted proteomics, qualitative real-time polymerase chain reaction screening, and Western blot to determine signaling cascades, gene expression, protein-protein interaction, and protein membrane trafficking in wild-type and transgenic rats. RESULTS GGPP contents were highly variable depending on food source that differentially regulated blood GGPP levels in rats. Diets containing intermediate and high GGPP reduced or abolished the effects of statins in rats with hypoxia- and monocrotaline-induced pulmonary hypertension: this was rescuable by methyl-allylthiosulfinate and methyl-allylthiosulfinate-rich garlic extracts. In human pulmonary artery smooth muscle cells treated with statins, hypoxia activated RhoA in an extracellular GGPP-dependent manner. Hypoxia-induced ROCK2 (Rho associated coiled-coil containing protein kinase 2)/Rab10 (Ras-related protein rab-10) signaling was prevented by statin and recovered by exogenous GGPP. The hypoxia-activated RhoA/ROCK2 pathway in rat and human pulmonary artery smooth muscle cells upregulated the expression of Ca2+-sensing receptor (CaSR) and HIMF (hypoxia-induced mitogenic factor), a mechanism attenuated by statin treatment and regained with exogenous GGPP. Rab10 knockdown almost abrogated hypoxia-promoted CaSR membrane trafficking, a process diminished by statin and resumed by exogenous GGPP. Hypoxia-induced pulmonary hypertension was reduced in rats with CaSR mutated at the binding motif of HIMF and the interaction between dietary GGPP and statin efficiency was abolished. In humans fed a high GGPP diet, blood GGPP levels were increased. This abolished statin-lowering effects on plasma GGPP, and also on hypoxia-enhanced RhoA activity of blood monocytes that was rescued by garlic extracts. CONCLUSIONS There is important dietary regulation of GGPP levels that interferes with the effects of statin therapy in experimental pulmonary hypertension. These observations rely on a key and central role of RhoA-ROCK2 cascade activation and Rab10-faciliated CaSR membrane trafficking with subsequent overexpression and binding of HIMF to CaSR. These findings warrant clinical investigation for the treatment of pulmonary hypertension and perhaps other diseases by combining statin with garlic-derived methyl-allylthiosulfinate or garlic extracts and thus circumventing dietary GGPP variations.
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Affiliation(s)
- Liping Zhu
- Department of Pathophysiology, School of Basic Medicine (L.Z., F.L., Q. Hao, T.F., Z.C., S.L., R.X., M.S., T.Z., X.F., X.Z., Q. Hu), Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.,Key Laboratory of Pulmonary Diseases of Ministry of Health (L.Z., F.L., Q. Hao, T.F., Z.C., S.L., R.X., M.S., T.Z., X.F., X.Z., Q. Hu), Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Fangbo Liu
- Department of Pathophysiology, School of Basic Medicine (L.Z., F.L., Q. Hao, T.F., Z.C., S.L., R.X., M.S., T.Z., X.F., X.Z., Q. Hu), Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.,Key Laboratory of Pulmonary Diseases of Ministry of Health (L.Z., F.L., Q. Hao, T.F., Z.C., S.L., R.X., M.S., T.Z., X.F., X.Z., Q. Hu), Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Qiang Hao
- Department of Pathophysiology, School of Basic Medicine (L.Z., F.L., Q. Hao, T.F., Z.C., S.L., R.X., M.S., T.Z., X.F., X.Z., Q. Hu), Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.,Key Laboratory of Pulmonary Diseases of Ministry of Health (L.Z., F.L., Q. Hao, T.F., Z.C., S.L., R.X., M.S., T.Z., X.F., X.Z., Q. Hu), Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Tian Feng
- Department of Pathophysiology, School of Basic Medicine (L.Z., F.L., Q. Hao, T.F., Z.C., S.L., R.X., M.S., T.Z., X.F., X.Z., Q. Hu), Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.,Key Laboratory of Pulmonary Diseases of Ministry of Health (L.Z., F.L., Q. Hao, T.F., Z.C., S.L., R.X., M.S., T.Z., X.F., X.Z., Q. Hu), Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Zeshuai Chen
- Department of Pathophysiology, School of Basic Medicine (L.Z., F.L., Q. Hao, T.F., Z.C., S.L., R.X., M.S., T.Z., X.F., X.Z., Q. Hu), Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.,Key Laboratory of Pulmonary Diseases of Ministry of Health (L.Z., F.L., Q. Hao, T.F., Z.C., S.L., R.X., M.S., T.Z., X.F., X.Z., Q. Hu), Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Shengquan Luo
- Department of Pathophysiology, School of Basic Medicine (L.Z., F.L., Q. Hao, T.F., Z.C., S.L., R.X., M.S., T.Z., X.F., X.Z., Q. Hu), Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.,Key Laboratory of Pulmonary Diseases of Ministry of Health (L.Z., F.L., Q. Hao, T.F., Z.C., S.L., R.X., M.S., T.Z., X.F., X.Z., Q. Hu), Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Rui Xiao
- Department of Pathophysiology, School of Basic Medicine (L.Z., F.L., Q. Hao, T.F., Z.C., S.L., R.X., M.S., T.Z., X.F., X.Z., Q. Hu), Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.,Key Laboratory of Pulmonary Diseases of Ministry of Health (L.Z., F.L., Q. Hao, T.F., Z.C., S.L., R.X., M.S., T.Z., X.F., X.Z., Q. Hu), Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Mengxiang Sun
- Department of Pathophysiology, School of Basic Medicine (L.Z., F.L., Q. Hao, T.F., Z.C., S.L., R.X., M.S., T.Z., X.F., X.Z., Q. Hu), Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.,Key Laboratory of Pulmonary Diseases of Ministry of Health (L.Z., F.L., Q. Hao, T.F., Z.C., S.L., R.X., M.S., T.Z., X.F., X.Z., Q. Hu), Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Ting Zhang
- Department of Pathophysiology, School of Basic Medicine (L.Z., F.L., Q. Hao, T.F., Z.C., S.L., R.X., M.S., T.Z., X.F., X.Z., Q. Hu), Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.,Key Laboratory of Pulmonary Diseases of Ministry of Health (L.Z., F.L., Q. Hao, T.F., Z.C., S.L., R.X., M.S., T.Z., X.F., X.Z., Q. Hu), Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Xiaohang Fan
- Department of Pathophysiology, School of Basic Medicine (L.Z., F.L., Q. Hao, T.F., Z.C., S.L., R.X., M.S., T.Z., X.F., X.Z., Q. Hu), Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.,Key Laboratory of Pulmonary Diseases of Ministry of Health (L.Z., F.L., Q. Hao, T.F., Z.C., S.L., R.X., M.S., T.Z., X.F., X.Z., Q. Hu), Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Xianqin Zeng
- Department of Pathophysiology, School of Basic Medicine (L.Z., F.L., Q. Hao, T.F., Z.C., S.L., R.X., M.S., T.Z., X.F., X.Z., Q. Hu), Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.,Key Laboratory of Pulmonary Diseases of Ministry of Health (L.Z., F.L., Q. Hao, T.F., Z.C., S.L., R.X., M.S., T.Z., X.F., X.Z., Q. Hu), Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Jianguo He
- State Key Laboratory of Cardiovascular Disease, Fu Wai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing (J.H.)
| | - Ping Yuan
- Department of Cardiopulmonary Circulation, Shanghai Pulmonary Hospital, Tongji University School of Medicine, China (P.Y., J.L.)
| | - Jinming Liu
- Department of Cardiopulmonary Circulation, Shanghai Pulmonary Hospital, Tongji University School of Medicine, China (P.Y., J.L.)
| | - Matthieu Ruiz
- Departments of Nutrition (M.R.), Université de Montréal, Canada.,Montreal Heart Institute Research Center, Canada (M.R., J.D.)
| | - Jocelyn Dupuis
- Medicine (J.D.), Université de Montréal, Canada.,Montreal Heart Institute Research Center, Canada (M.R., J.D.)
| | - Qinghua Hu
- Department of Pathophysiology, School of Basic Medicine (L.Z., F.L., Q. Hao, T.F., Z.C., S.L., R.X., M.S., T.Z., X.F., X.Z., Q. Hu), Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.,Key Laboratory of Pulmonary Diseases of Ministry of Health (L.Z., F.L., Q. Hao, T.F., Z.C., S.L., R.X., M.S., T.Z., X.F., X.Z., Q. Hu), Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
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10
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Zhou MY, Cheng L, Chen L, Gu YJ, Wang Y. Calcium-sensing receptor in the development and treatment of pulmonary hypertension. Mol Biol Rep 2021; 48:975-981. [PMID: 33394231 DOI: 10.1007/s11033-020-06065-3] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2020] [Accepted: 12/03/2020] [Indexed: 12/22/2022]
Abstract
Calcium-sensing receptor (CaSR) is widely involved in the cell proliferation, differentiation, migration, adhesion and apoptosis, which can affect the vascular remodeling in the humanbody. The main ligand of CaSR is extracellular Ca2+. CaSR has the physiological significance in Ca2+ homeostasis. Pulmonary vascular remodeling is one of the main histopathological changes of pulmonary hypertension (PH). The abnormal proliferation of pulmonary artery smooth muscle cells (PASMCs) results in the pulmonary vascular remodeling. CaSR is an important regulator of [Ca2+]i. [Ca2+]i is the main cause of the excessive pulmonary vascular remodeling in patients with PH. In this review, it was conclued that the structure of CaSR was prone to explore the devolopment or the treatment of PH. It was found that the regulation of CaSR with some miRNA could inhibit the proliferation of PASMCs, and that CaSR could affect the occurrence of autophagy in PH. Therefore, CaSR would become a new therapeutic target to PH.
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MESH Headings
- Adamantane/analogs & derivatives
- Adamantane/therapeutic use
- Animals
- Autophagy/drug effects
- Autophagy/genetics
- Calcium/metabolism
- Calcium Channel Blockers/therapeutic use
- Cell Differentiation/drug effects
- Cell Movement/drug effects
- Cell Proliferation/drug effects
- Endothelial Cells/drug effects
- Endothelial Cells/metabolism
- Endothelial Cells/pathology
- Gene Expression Regulation
- Humans
- Hypertension, Pulmonary/drug therapy
- Hypertension, Pulmonary/genetics
- Hypertension, Pulmonary/metabolism
- Hypertension, Pulmonary/pathology
- Myocytes, Smooth Muscle/drug effects
- Myocytes, Smooth Muscle/metabolism
- Myocytes, Smooth Muscle/pathology
- Pulmonary Artery/drug effects
- Pulmonary Artery/metabolism
- Pulmonary Artery/pathology
- Quinoxalines/therapeutic use
- Receptors, Calcium-Sensing/antagonists & inhibitors
- Receptors, Calcium-Sensing/genetics
- Receptors, Calcium-Sensing/metabolism
- Signal Transduction
- Vascular Remodeling/drug effects
- Vascular Remodeling/genetics
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Affiliation(s)
- Ming-Yuan Zhou
- Department of Clinical Pharmacology, School of Pharmacy, China Medical University, No.77 Puhe Road, Shenyang North New Area, Shenyang, Liaoning, 110122, People's Republic of China
| | - Lin Cheng
- Department of Clinical Pharmacology, School of Pharmacy, China Medical University, No.77 Puhe Road, Shenyang North New Area, Shenyang, Liaoning, 110122, People's Republic of China
| | - Lei Chen
- Department of Clinical Pharmacology, School of Pharmacy, China Medical University, No.77 Puhe Road, Shenyang North New Area, Shenyang, Liaoning, 110122, People's Republic of China
| | - Ying-Jian Gu
- Department of Clinical Pharmacology, School of Pharmacy, China Medical University, No.77 Puhe Road, Shenyang North New Area, Shenyang, Liaoning, 110122, People's Republic of China
| | - Yun Wang
- Department of Clinical Pharmacology, School of Pharmacy, China Medical University, No.77 Puhe Road, Shenyang North New Area, Shenyang, Liaoning, 110122, People's Republic of China.
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11
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Tan R, Li J, Liu F, Liao P, Ruiz M, Dupuis J, Zhu L, Hu Q. Phenylalanine induces pulmonary hypertension through calcium-sensing receptor activation. Am J Physiol Lung Cell Mol Physiol 2020; 319:L1010-L1020. [PMID: 32964725 DOI: 10.1152/ajplung.00215.2020] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
Abstract
Phenylalanine levels are associated with pulmonary hypertension in metabolic profiling clinical studies. However, the pathophysiological role of phenylalanine on pulmonary circulation is still unclear. We experimentally addressed the direct impact of phenylalanine on pulmonary circulation in rats and explored the underlying molecular pathway. Phenylalanine was injected intraperitoneally into Sprague-Dawley rats (400 mg/100 g body wt) as a single dose or daily in a chronic manner for 2, 3, and 4 wk. Chronic injection of phenylalanine induced pulmonary hypertension with time-dependent severity, evidenced by elevated pulmonary artery pressure and pulmonary vascular resistance as well as pulmonary artery and right ventricular hypertrophy. Using tandem mass spectrometry analysis, we found a quick twofold increase in blood level of phenylalanine 2 h following injection. This increase led to a significant accumulation of phenylalanine in lung after 4 h, which remained sustained at up to a threefold increase after 4 wk. In addition, a cellular thermal shift assay with lung tissues from phenylalanine-injected rats revealed the binding of phenylalanine to the calcium-sensing receptor (CaSR). In vitro experiments with cultured pulmonary arterial smooth muscle cells showed that phenylalanine activated CaSR, as indicated by an increase in intracellular calcium content, which was attenuated or diminished by the inhibition or knockdown of CaSR. Finally, the global knockout or lung-specific knockdown of CaSR significantly attenuated phenylalanine-induced pulmonary hypertension. Chronic phenylalanine injection induces pulmonary hypertension through binding to CaSR and its subsequent activation. Here, we demonstrate a pathophysiological role of phenylalanine in pulmonary hypertension through the CaSR. This study provides a novel animal model for pulmonary hypertension and reveals a potentially clinically significant role for this metabolite in human pulmonary hypertension as a marker, a mediator of disease, and a possible therapeutic target.
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Affiliation(s)
- Rubin Tan
- Department of Pathophysiology, School of Basic Medicine; and Key Laboratory of Pulmonary Diseases of Ministry of Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.,Department of Physiology, School of Basic Medicine, Xuzhou Medical University, Xuzhou, China
| | - Jiansha Li
- Institute of Pathology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Fangbo Liu
- Department of Pathophysiology, School of Basic Medicine; and Key Laboratory of Pulmonary Diseases of Ministry of Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Pu Liao
- Department of Pathology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Matthieu Ruiz
- Department of Medicine, Université de Montréal, Montreal, Quebec, Canada.,Montreal Heart Institute Research Center, Montreal, Quebec, Canada
| | - Jocelyn Dupuis
- Department of Medicine, Université de Montréal, Montreal, Quebec, Canada.,Montreal Heart Institute Research Center, Montreal, Quebec, Canada
| | - Liping Zhu
- Department of Pathophysiology, School of Basic Medicine; and Key Laboratory of Pulmonary Diseases of Ministry of Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Qinghua Hu
- Department of Pathophysiology, School of Basic Medicine; and Key Laboratory of Pulmonary Diseases of Ministry of Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
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12
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Kaymak E, Akin AT, Tufan E, Başaran KE, Taheri S, Özdamar S, Yakan B. The effect of chloroquine on the TRPC1, TRPC6, and CaSR in the pulmonary artery smooth muscle cells in hypoxia-induced experimental pulmonary artery hypertension. J Biochem Mol Toxicol 2020; 35:e22636. [PMID: 32956540 DOI: 10.1002/jbt.22636] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2020] [Revised: 07/30/2020] [Accepted: 09/09/2020] [Indexed: 01/10/2023]
Abstract
Pulmonary arterial hypertension (PAH) is a life-threatening disease characterized by a constant high pulmonary artery pressure and the remodeling of the vessel. Chloroquine (CLQ) has been observed to inhibit calcium influx. The aim of this study is to investigate the effect of CLQ on transient receptor cationic proteins (TRPC1 and TRPC6) and extracellular calcium-sensitive receptor (CaSR) in a hypoxic PAH model. In this study, 8- to 12-week-old 32 male Wistar albino rats, weighing 200 to 300 g, were used. The rats were studied in four groups, including normoxy control, n = 8; normoxy CLQ (50 mg/kg/28 d), n = 8; hypoxia (HX; 10% oxygen/28 d) control, n = 8; and HX (10% oxygen/28 d) + CLQ (50 mg/kg), N = 8. Pulmonary arterial medial wall thickness, pulmonary arteriole wall, TRPC1, TRPC6, and CaSR expressions were evaluated by immunohistochemistry, polymerase chain reaction, and enzyme-linked immunosorbent assay methods. At the end of the experiment, a statistically significant increase in the medial wall thickness was observed in the hypoxic group as compared with the control group. However, in the HX + CLQ group, there was a statistically significant decrease in the vessel medial wall as compared with the HX group. In the TRPC1-, TRPC6-, and CaSR-immunopositive cell numbers, messenger RNA expressions and biochemical results showed an increase in the HX group, whereas they were decreased in the HX + CLQ group. The inhibitory effect of CLQ on calcium receptors in arterioles was observed in PAH.
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Affiliation(s)
- Emin Kaymak
- Department of Histology and Embryology, Yozgat Bozok University, Yozgat, Turkey
| | | | - Esra Tufan
- Department of Physiology, Erciyes University, Kayseri, Turkey
| | | | - Serpil Taheri
- Department of Medical Biology, Erciyes University, Kayseri, Turkey
| | - Saim Özdamar
- Department of Histology and Embryology, Pamukkale University, Denizli, Turkey
| | - Birkan Yakan
- Department of Histology and Embryology, Erciyes University, Kayseri, Turkey
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13
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Li J, Liao P, Wang K, Miao Z, Xiao R, Zhu L, Hu Q. Calcium Sensing Receptor Inhibits Growth of Human Lung Adenocarcinoma Possibly via the GSK3β/Cyclin D1 Pathway. Front Cell Dev Biol 2020; 8:446. [PMID: 32671062 PMCID: PMC7330125 DOI: 10.3389/fcell.2020.00446] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2020] [Accepted: 05/13/2020] [Indexed: 12/12/2022] Open
Abstract
The effect of calcium sensing receptor (CaSR) on tumor cell proliferation has been studied in several human cancers, and great discrepancies were found in different tumors. However, the role of CaSR in lung adenocarcinomas (LUADs) is not clear. Therefore, we investigated the function of CaSR on regulating the growth of human LUAD and its possible mechanism. The expression of CaSR protein and its relationship with pathological parameters were examined in paraffin sections from 51 LUAD patients, by immunohistochemistry. The results showed that CasR expression was negatively correlated with the Ki-67 index as well as the grade of malignancy in LUAD. Further, CaSR demonstrated an in vitro inhibitory effect on the proliferation of human LUAD A549 cells by regulating CaSR activity with agonist cinacalcet, antagonist NPS2143, or shRNA-CaSR transfection. Tumor xenograft models also verified the in vivo proliferation-inhibiting role of CaSR by subcutaneous injecting A549 cells into nude mice with or without changes of CaSR activity. Molecularly, Western blotting showed that CaSR positively regulated the activity of glycogen synthase kinase 3β (GSK3β), followed by the downregulation of Cyclin D1. We used the dominant negative mutant and the constitutively active mutant plasmid of GSK3β to alter GSK3β activity. Our functional experiments showed that the proliferation-inhibition of CaSR was suppressed by the inactivation of GSK3β and enhanced by the activation of GSK3β. These results suggested that CaSR played a proliferation-inhibiting role in LUAD, at least partially by regulating the GSK3β/Cyclin D1 pathway.
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Affiliation(s)
- Jiansha Li
- Institute of Pathology, Tongji Hospital, Wuhan, China
- Key Laboratory of Pulmonary Diseases of Ministry of Health of China, Wuhan, China
- Department of Pathology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Pu Liao
- Key Laboratory of Pulmonary Diseases of Ministry of Health of China, Wuhan, China
- Department of Pathology, Union Hospital, Wuhan, China
| | - Kun Wang
- Department of Nephrology, Tongji Hospital, Wuhan, China
| | | | - Rui Xiao
- Key Laboratory of Pulmonary Diseases of Ministry of Health of China, Wuhan, China
- Department of Pathophysiology, School of Basic Medicine, Huazhong University of Science and Technology, Wuhan, China
| | - Liping Zhu
- Key Laboratory of Pulmonary Diseases of Ministry of Health of China, Wuhan, China
- Department of Pathophysiology, School of Basic Medicine, Huazhong University of Science and Technology, Wuhan, China
| | - Qinghua Hu
- Key Laboratory of Pulmonary Diseases of Ministry of Health of China, Wuhan, China
- Department of Pathophysiology, School of Basic Medicine, Huazhong University of Science and Technology, Wuhan, China
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14
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Liu B, Zhu L, Yuan P, Marsboom G, Hong Z, Liu J, Zhang P, Hu Q. Comprehensive identification of signaling pathways for idiopathic pulmonary arterial hypertension. Am J Physiol Cell Physiol 2020; 318:C913-C930. [PMID: 32159364 DOI: 10.1152/ajpcell.00382.2019] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
Whole exome sequencing (WES) was used in the research of familial pulmonary arterial hypertension (FPAH). CAV1 and KCNK3 were found as two novel candidate genes of FPAH. However, few pathogenic genes were identified in idiopathic pulmonary arterial hypertension (IPAH). We conducted WES in 20 unrelated IPAH patients who did not carry the known PAH-pathogenic variants among BMPR2, CAV1, KCNK3, SMAD9, ALK1, and ENG. We found a total of 4,950 variants in 3,534 genes, including 4,444 single-nucleotide polymorphisms and 506 insertions/deletions (InDels). Through the comprehensive and multilevel analysis, we disclosed several novel signaling cascades significantly connected to IPAH, including variants related to cadherin signaling pathway, dilated cardiomyopathy, glucose metabolism, immune response, mucin-type O-glycosylation, phospholipase C (PLC)-activating G protein-coupled receptor (GPCR) signaling pathway, vascular contraction and generation, and voltage-dependent Ca2+ channels. We also conducted validation studies in five mutant genes related to PLC-activating GPCR signaling pathway potentially involved in intracellular calcium regulation through Sanger sequencing for mutation accuracy, qRT-PCR for mRNA stability, immunofluorescence for subcellular localization, Western blotting for protein level, Fura-2 imaging for intracellular calcium, and proliferation analysis for cell function. The validation experiments showed that those variants in CCR5 and C3AR1 significantly increased the rise of intracellular calcium and the variant in CCR5 profoundly enhanced proliferative capacity of human pulmonary artery smooth muscle cells. Thus, our study suggests that multiple genetically affected signaling pathways take effect together to cause the formation of IPAH and the development of right heart failure and may further provide new therapy targets or putative clues for the present treatments such as limited therapeutic effectiveness of Ca2+ channel blockers.
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Affiliation(s)
- Bingxun Liu
- Department of Pathophysiology, School of Basic Medicine, and Key Laboratory of Pulmonary Diseases of Ministry of Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Liping Zhu
- Department of Pathophysiology, School of Basic Medicine, and Key Laboratory of Pulmonary Diseases of Ministry of Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Ping Yuan
- Department of Cardiopulmonary Circulation, Shanghai Pulmonary Hospital, Tongji University School of Medicine, Shanghai, China
| | - Glenn Marsboom
- Department of Pharmacology, University of Illinois College of Medicine, Chicago, Illinois
| | - Zhigang Hong
- Department of Pharmacology, University of Illinois College of Medicine, Chicago, Illinois
| | - Jinming Liu
- Department of Cardiopulmonary Circulation, Shanghai Pulmonary Hospital, Tongji University School of Medicine, Shanghai, China
| | - Peng Zhang
- Department of Thoracic Surgery, Shanghai Pulmonary Hospital, Tongji University School of Medicine, Shanghai, China
| | - Qinghua Hu
- Department of Pathophysiology, School of Basic Medicine, and Key Laboratory of Pulmonary Diseases of Ministry of Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
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15
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Zhu L, Xiao R, Zhang X, Lang Y, Liu F, Yu Z, Zhang J, Su Y, Lu Y, Wang T, Luo S, Wang J, Liu ML, Dupuis J, Jing ZC, Li T, Xiong W, Hu Q. Spermine on Endothelial Extracellular Vesicles Mediates Smoking-Induced Pulmonary Hypertension Partially Through Calcium-Sensing Receptor. Arterioscler Thromb Vasc Biol 2020; 39:482-495. [PMID: 30626206 DOI: 10.1161/atvbaha.118.312280] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Objective- This study aims to determine whether and how the enriched metabolites of endothelial extracellular vesicles (eEVs) are critical for cigarette smoke-induced direct injury of endothelial cells and the development of pulmonary hypertension, rarely explored in contrast to long-investigated mechanisms secondary to chronic hypoxemia. Approach and Results- Metabonomic screen of eEVs from cigarette-smoking human subjects reveals prominent elevation of spermine-a polyamine metabolite with potent agonist activity for the extracellular CaSR (calcium-sensing receptor). CaSR inhibition with the negative allosteric modulator Calhex231 or CaSR knockdown attenuates cigarette smoke-induced pulmonary hypertension in rats without emphysematous changes in lungs or chronic hypoxemia. Cigarette smoke exposure increases the generation of spermine-positive eEVs and their spermine content. Immunocytochemical staining and immunogold electron microscopy recognize the spermine enrichment not only within the cytosol but also on the outer surface of eEV membrane. The repression of spermine synthesis, the inhibitory analog of spermine, N1-dansyl-spermine, Calhex231, or CaSR knockdown profoundly suppresses eEV exposure-mobilized cytosolic calcium signaling, pulmonary artery constriction, and smooth muscle cell proliferation. Confocal imaging of immunohistochemical staining demonstrates the migration of spermine-positive eEVs from endothelium into smooth muscle cells in pulmonary arteries of cigarette smoke-exposed rats. The repression of spermine synthesis or CaSR knockout results in attenuated development of pulmonary hypertension induced by an intravascular administration of eEVs. Conclusions- Cigarette smoke enhances eEV generation with spermine enrichment at their outer surface and cytosol, which activates CaSR and subsequently causes smooth muscle cell constriction and proliferation, therefore, directly leading to the development of pulmonary hypertension.
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Affiliation(s)
- Liping Zhu
- From the Department of Pathophysiology, School of Basic Medicine (L.Z., R.X., X.Z., Y.L., F.L., Z.Y., S.L., Q.H.).,Key Laboratory of Pulmonary Diseases of Ministry of Health (L.Z., R.X., X.Z., Y.Lang, F.L., Z.Y., J.Z., Y.S., Y.Lu, T.W., S.L., W.X., Q.H.)
| | - Rui Xiao
- From the Department of Pathophysiology, School of Basic Medicine (L.Z., R.X., X.Z., Y.L., F.L., Z.Y., S.L., Q.H.).,Key Laboratory of Pulmonary Diseases of Ministry of Health (L.Z., R.X., X.Z., Y.Lang, F.L., Z.Y., J.Z., Y.S., Y.Lu, T.W., S.L., W.X., Q.H.)
| | - Xiuyun Zhang
- From the Department of Pathophysiology, School of Basic Medicine (L.Z., R.X., X.Z., Y.L., F.L., Z.Y., S.L., Q.H.).,Key Laboratory of Pulmonary Diseases of Ministry of Health (L.Z., R.X., X.Z., Y.Lang, F.L., Z.Y., J.Z., Y.S., Y.Lu, T.W., S.L., W.X., Q.H.)
| | - Yuheng Lang
- Key Laboratory of Pulmonary Diseases of Ministry of Health (L.Z., R.X., X.Z., Y.Lang, F.L., Z.Y., J.Z., Y.S., Y.Lu, T.W., S.L., W.X., Q.H.).,Department of Pathology and Department of Respiratory and Critical Care Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China (Y.L., T.W., W.X.)
| | - Fangbo Liu
- From the Department of Pathophysiology, School of Basic Medicine (L.Z., R.X., X.Z., Y.L., F.L., Z.Y., S.L., Q.H.).,Key Laboratory of Pulmonary Diseases of Ministry of Health (L.Z., R.X., X.Z., Y.Lang, F.L., Z.Y., J.Z., Y.S., Y.Lu, T.W., S.L., W.X., Q.H.)
| | - Zhe Yu
- From the Department of Pathophysiology, School of Basic Medicine (L.Z., R.X., X.Z., Y.L., F.L., Z.Y., S.L., Q.H.).,Key Laboratory of Pulmonary Diseases of Ministry of Health (L.Z., R.X., X.Z., Y.Lang, F.L., Z.Y., J.Z., Y.S., Y.Lu, T.W., S.L., W.X., Q.H.)
| | - Jiwei Zhang
- Key Laboratory of Pulmonary Diseases of Ministry of Health (L.Z., R.X., X.Z., Y.Lang, F.L., Z.Y., J.Z., Y.S., Y.Lu, T.W., S.L., W.X., Q.H.).,Department of Pathology and Department of Respiratory and Critical Care Medicine, Union Hospital (J.Z., Y.S.)
| | - Yuan Su
- Key Laboratory of Pulmonary Diseases of Ministry of Health (L.Z., R.X., X.Z., Y.Lang, F.L., Z.Y., J.Z., Y.S., Y.Lu, T.W., S.L., W.X., Q.H.).,Department of Pathology and Department of Respiratory and Critical Care Medicine, Union Hospital (J.Z., Y.S.)
| | - Yankai Lu
- From the Department of Pathophysiology, School of Basic Medicine (L.Z., R.X., X.Z., Y.L., F.L., Z.Y., S.L., Q.H.).,Key Laboratory of Pulmonary Diseases of Ministry of Health (L.Z., R.X., X.Z., Y.Lang, F.L., Z.Y., J.Z., Y.S., Y.Lu, T.W., S.L., W.X., Q.H.)
| | - Tao Wang
- Key Laboratory of Pulmonary Diseases of Ministry of Health (L.Z., R.X., X.Z., Y.Lang, F.L., Z.Y., J.Z., Y.S., Y.Lu, T.W., S.L., W.X., Q.H.).,Department of Pathology and Department of Respiratory and Critical Care Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China (Y.L., T.W., W.X.)
| | - Shengquan Luo
- From the Department of Pathophysiology, School of Basic Medicine (L.Z., R.X., X.Z., Y.L., F.L., Z.Y., S.L., Q.H.).,Key Laboratory of Pulmonary Diseases of Ministry of Health (L.Z., R.X., X.Z., Y.Lang, F.L., Z.Y., J.Z., Y.S., Y.Lu, T.W., S.L., W.X., Q.H.)
| | - Jian Wang
- State Key Laboratory of Respiratory Diseases, Guangzhou Institute of Respiratory Disease, The First Affiliated Hospital of Guangzhou Medical University, China (J.W.)
| | - Ming-Lin Liu
- Department of Dermatology, Perelman School of Medicine, University of Pennsylvania, Philadelphia (M.-L.L.).,Philadelphia Veterans Administration Medical Center (M.-L.L.)
| | - Jocelyn Dupuis
- Montreal Heart Institute, Québec, Canada (J.D.).,Department of medicine, Université de Montréal, Québec, Canada (J.D.)
| | - Zhi-Cheng Jing
- State Key Laboratory of Cardiovascular Disease, Fu Wai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing (Z.-C.J.)
| | - Tong Li
- Department of Heart Centre and Artificial Cell Engineering Technology Research Center of Public Health Ministry, Third Central Clinical College, Tianjin Medical University, China (T.L.)
| | - Weining Xiong
- Key Laboratory of Pulmonary Diseases of Ministry of Health (L.Z., R.X., X.Z., Y.Lang, F.L., Z.Y., J.Z., Y.S., Y.Lu, T.W., S.L., W.X., Q.H.).,Department of Pathology and Department of Respiratory and Critical Care Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China (Y.L., T.W., W.X.)
| | - Qinghua Hu
- From the Department of Pathophysiology, School of Basic Medicine (L.Z., R.X., X.Z., Y.L., F.L., Z.Y., S.L., Q.H.).,Key Laboratory of Pulmonary Diseases of Ministry of Health (L.Z., R.X., X.Z., Y.Lang, F.L., Z.Y., J.Z., Y.S., Y.Lu, T.W., S.L., W.X., Q.H.)
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16
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Knock GA. NADPH oxidase in the vasculature: Expression, regulation and signalling pathways; role in normal cardiovascular physiology and its dysregulation in hypertension. Free Radic Biol Med 2019; 145:385-427. [PMID: 31585207 DOI: 10.1016/j.freeradbiomed.2019.09.029] [Citation(s) in RCA: 63] [Impact Index Per Article: 12.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/28/2019] [Revised: 08/29/2019] [Accepted: 09/23/2019] [Indexed: 02/06/2023]
Abstract
The last 20-25 years have seen an explosion of interest in the role of NADPH oxidase (NOX) in cardiovascular function and disease. In vascular smooth muscle and endothelium, NOX generates reactive oxygen species (ROS) that act as second messengers, contributing to the control of normal vascular function. NOX activity is altered in response to a variety of stimuli, including G-protein coupled receptor agonists, growth-factors, perfusion pressure, flow and hypoxia. NOX-derived ROS are involved in smooth muscle constriction, endothelium-dependent relaxation and smooth muscle growth, proliferation and migration, thus contributing to the fine-tuning of blood flow, arterial wall thickness and vascular resistance. Through reversible oxidative modification of target proteins, ROS regulate the activity of protein tyrosine phosphatases, kinases, G proteins, ion channels, cytoskeletal proteins and transcription factors. There is now considerable, but somewhat contradictory evidence that NOX contributes to the pathogenesis of hypertension through oxidative stress. Specific NOX isoforms have been implicated in endothelial dysfunction, hyper-contractility and vascular remodelling in various animal models of hypertension, pulmonary hypertension and pulmonary arterial hypertension, but also have potential protective effects, particularly NOX4. This review explores the multiplicity of NOX function in the healthy vasculature and the evidence for and against targeting NOX for antihypertensive therapy.
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Affiliation(s)
- Greg A Knock
- Dpt. of Inflammation Biology, School of Immunology & Microbial Sciences, Faculty of Life Sciences & Medicine, King's College London, UK.
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17
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Xiao R, Zhu L, Su Y, Zhang J, Lu Y, Li J, Wang T, Fang J, Jing ZC, Dupuis J, Luo S, Hu Q. Monocrotaline pyrrole induces pulmonary endothelial damage through binding to and release from erythrocytes in lung during venous blood reoxygenation. Am J Physiol Lung Cell Mol Physiol 2019; 316:L798-L809. [PMID: 30785344 DOI: 10.1152/ajplung.00279.2018] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Monocrotaline has been widely used to establish an animal model of pulmonary hypertension, most frequently in rats. An important feature of this model resides in the selectivity of monocrotaline injury toward the pulmonary vascular endothelium versus the systemic vasculature when administrated at standard dosage. The toxic metabolite of monocrotaline, monocrotaline pyrrole, is transported by erythrocytes. This study aimed to reveal whether partial pressure of oxygen of blood determined the binding and release of monocrotaline pyrrole from erythrocytes in rats with one subcutaneous injection of monocrotatline at the standard dosage of 60 mg/kg. Our experiments demonstrated that monocrotaline pyrrole bound to and released from erythrocytes at the physiological levels of partial pressure of oxygen in venous and arterial blood, respectively, and then aggregated on pulmonary artery endothelial cells. Monocrotaline pyrrole-induced damage of endothelial cells was also dependent on partial pressure of oxygen. In conclusion, our results demonstrate the importance of oxygen partial pressure on monocrotaline pyrrole binding to erythrocytes and on aggregation and injury of pulmonary endothelial cells. We suggest that these mechanisms contribute to pulmonary selectivity of this toxic injury model of pulmonary hypertension.
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Affiliation(s)
- Rui Xiao
- Department of Pathophysiology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.,Key Laboratory of Pulmonary Diseases of Ministry of Health, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Liping Zhu
- Department of Pathophysiology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.,Key Laboratory of Pulmonary Diseases of Ministry of Health, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Yuan Su
- Key Laboratory of Pulmonary Diseases of Ministry of Health, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.,Department of Respiratory Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Jiwei Zhang
- Key Laboratory of Pulmonary Diseases of Ministry of Health, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.,Department of Pathology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Yankai Lu
- Key Laboratory of Pulmonary Diseases of Ministry of Health, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.,Department of Pathology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Jiansha Li
- Key Laboratory of Pulmonary Diseases of Ministry of Health, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.,Department of Pathology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Tao Wang
- Key Laboratory of Pulmonary Diseases of Ministry of Health, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.,Department of Respiratory Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Jing Fang
- Department of Cardiothoracic and Vascular Surgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology , Wuhan China
| | - Zhi-Cheng Jing
- State Key Laboratory of Cardiovascular Disease, Fu Wai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College , Beijing , China
| | - Jocelyn Dupuis
- Montreal Heart Institute, Montreal, Quebec, Canada.,Department of Medicine, Université de Montréal , Montreal, Quebec , Canada
| | - Shengquan Luo
- Department of Pathophysiology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.,Key Laboratory of Pulmonary Diseases of Ministry of Health, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Qinghua Hu
- Department of Pathophysiology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.,Key Laboratory of Pulmonary Diseases of Ministry of Health, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
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18
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Dai M, Xiao R, Cai L, Ge T, Zhu L, Hu Q. HMGB1 is mechanistically essential in the development of experimental pulmonary hypertension. Am J Physiol Cell Physiol 2018; 316:C175-C185. [PMID: 30517029 DOI: 10.1152/ajpcell.00148.2018] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Pulmonary hypertension (PH) is a mortal disease featuring pulmonary vascular constriction and remodeling, right heart failure, and eventual death. Several reports showed that high-mobility group box 1 (HMGB1) appears to be critical for the development of PH; the underlying mechanism, however, has not been revealed. Experiments in the present study demonstrated that HMGB1 levels were elevated in the lung tissue and blood plasma of rats after chronic hypoxia exposure and monocrotaline treatment. HMGB1 was originally located within the nucleus and translocated to the cytoplasm of pulmonary artery smooth muscle cells (PASMCs) upon hypoxia exposure, a process that appeared to be mediated by endogenous H2O2. Exposure to HMGB1 mobilized calcium signaling in PASMCs, a response that was attenuated by extracellular Ca2+ removal, Toll-like receptor 4 (TLR4) inhibition by TAK-242, or transient receptor potential channel (TRPC) suppression with 2-aminoethoxydiphenyl borate (2-APB) and SKF-96365. The sustained phosphorylation of the Akt pathway modulated HMGB1-induced migration of PASMCs. The blockage of HMGB1 with glycyrrhizin or anti-HMGB1 neutralizing antibody attenuated lung inflammation and PH establishment in rats after hypoxia exposure and monocrotaline treatment. The above findings reveal the mechanistic importance of HMGB1 in PH through TLR4- and TRPC-associated Ca2+ influx and Akt phosphorylation-driven PASMC migration.
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Affiliation(s)
- Mao Dai
- Department of Pathophysiology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.,Key Laboratory of Pulmonary Diseases of Ministry of Health, Tongji Medical College, Huazhong University of Science and Technology , Wuhan , China
| | - Rui Xiao
- Department of Pathophysiology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.,Key Laboratory of Pulmonary Diseases of Ministry of Health, Tongji Medical College, Huazhong University of Science and Technology , Wuhan , China
| | - Luyao Cai
- Department of Pathophysiology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.,Key Laboratory of Pulmonary Diseases of Ministry of Health, Tongji Medical College, Huazhong University of Science and Technology , Wuhan , China
| | - Tong Ge
- Department of Pathophysiology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.,Key Laboratory of Pulmonary Diseases of Ministry of Health, Tongji Medical College, Huazhong University of Science and Technology , Wuhan , China
| | - Liping Zhu
- Department of Pathophysiology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.,Key Laboratory of Pulmonary Diseases of Ministry of Health, Tongji Medical College, Huazhong University of Science and Technology , Wuhan , China
| | - Qinghua Hu
- Department of Pathophysiology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.,Key Laboratory of Pulmonary Diseases of Ministry of Health, Tongji Medical College, Huazhong University of Science and Technology , Wuhan , China
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19
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Li C, Qin F, Xue M, Lei Y, Hu F, Xu H, Sun G, Wang T, Guo M. miR-429 and miR-424-5p inhibit cell proliferation and Ca 2+ influx by downregulating CaSR in pulmonary artery smooth muscle cells. Am J Physiol Cell Physiol 2018; 316:C111-C120. [PMID: 30462536 DOI: 10.1152/ajpcell.00219.2018] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Cytosolic free Ca2+ concentration is a key factor in pulmonary vasoconstriction and vascular remodeling of pulmonary artery smooth muscle cells (PASMCs). These processes contribute to pulmonary arterial hypertension and are influenced by expression of calcium-sensing receptor (CaSR). Although regulation of CaSR expression is precisely controlled, the contribution of microRNAs (miR) is incompletely understood. Here, we demonstrate that miR-429, miR-424-5p, miR-200b-3p, and miR-200c-3p regulate CaSR by targeting specific 3'-untranslated region, suggesting that these miRNAs function as CaSR inhibitors in PASMCs. Moreover, miR-429 and miR-424-5p inhibit proliferation of PASMCs by downregulating CaSR, resulting in reduced Ca2+ influx under both normoxia and hypoxia. These findings indicate miR-429 and miR-424-5p target CaSR and may function as Ca2+ influx suppressors in pulmonary arterial hypertension-associated diseases.
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Affiliation(s)
- Chuang Li
- Hubei Key Laboratory of Cell Homeostasis, College of Life Sciences, Wuhan University , Wuhan, Hubei , People's Republic of China
| | - Fang Qin
- Hubei Key Laboratory of Cell Homeostasis, College of Life Sciences, Wuhan University , Wuhan, Hubei , People's Republic of China
| | - Mengmeng Xue
- Hubei Key Laboratory of Cell Homeostasis, College of Life Sciences, Wuhan University , Wuhan, Hubei , People's Republic of China
| | - Yucong Lei
- Hubei Key Laboratory of Cell Homeostasis, College of Life Sciences, Wuhan University , Wuhan, Hubei , People's Republic of China
| | - Fen Hu
- Department of Respiratory and Critical Care Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology , Wuhan, Hubei , People's Republic of China
| | - Hui Xu
- Department of Respiratory and Critical Care Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology , Wuhan, Hubei , People's Republic of China
| | - Guihong Sun
- School of Basic Medical Sciences, Wuhan University , Wuhan, Hubei , People's Republic of China
| | - Tao Wang
- Department of Respiratory and Critical Care Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology , Wuhan, Hubei , People's Republic of China
| | - Mingxiong Guo
- Hubei Key Laboratory of Cell Homeostasis, College of Life Sciences, Wuhan University , Wuhan, Hubei , People's Republic of China
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20
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Schreckenberg R, Schlüter KD. Calcium sensing receptor expression and signalling in cardiovascular physiology and disease. Vascul Pharmacol 2018; 107:S1537-1891(17)30323-3. [PMID: 29514057 DOI: 10.1016/j.vph.2018.02.007] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2017] [Revised: 01/18/2018] [Accepted: 02/21/2018] [Indexed: 12/21/2022]
Abstract
Initially identified in the parathyroidea, the calcium sensing receptor (CaSR) is now recognized as an ubiquitously expressed receptor that exerts specific functions in multiple organs including the cardiovascular system. This review will focus on the role that CaSR plays in vascular and cardiac tissues. In the vasculature, CaSR is expressed in endothelial and smooth muscle cells. CaSR of endothelial cells participates in part to the regulation of local perfusion by linkage of CaSR activation to endothelial hyperpolarization and nitric oxide release. CaSR of smooth muscle cells is involved in the control of proliferation. In the pulmonary vasculature, however, CaSR participates in the onset of pulmonary hypertension, making CaSR antagonism a therapeutic option in this case. In the heart, CaSR is expressed in cardiac fibroblasts and myoyctes, contributing to normal cardiac function and composition of extracellular matrix. More important, activation of CaSR may participate in the cardiac protective effects of ischaemic pre-conditioning. In conclusion, CaSR plays an important physiological role in many regulatory pathways of the cardiovascular system, but due to the complex interaction between various cardiovascular cells and cell-specific effects, use of activators or inhibitors of CaSR for treatment of specific disease forms is yet not on the way.
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21
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Zhu L, Zhang J, Zhou J, Lu Y, Huang S, Xiao R, Yu X, Zeng X, Liu B, Liu F, Sun M, Dai M, Hao Q, Li J, Wang T, Li T, Hu Q. Mitochondrial transplantation attenuates hypoxic pulmonary hypertension. Oncotarget 2018; 7:48925-48940. [PMID: 27419637 PMCID: PMC5226481 DOI: 10.18632/oncotarget.10596] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2016] [Accepted: 06/30/2016] [Indexed: 01/01/2023] Open
Abstract
Mitochondria are essential for the onset of hypoxia-induced pulmonary vasoconstriction and pulmonary vascular-remodeling, two major aspects underlying the development of pulmonary hypertension, an incurable disease. However, hypoxia induces relaxation of systemic arteries such as femoral arteries and mitochondrial heterogeneity controls the distinct responses of pulmonary versus femoral artery smooth muscle cells to hypoxia in vitro. The aim of this study was to determine whether mitochondrial heterogeneity can be experimentally exploited in vivo for a potential treatment against pulmonary hypertension. The intact mitochondria were transplanted into Sprague-Dawley rat pulmonary artery smooth muscle cells in vivo via intravenous administration. The immune-florescent staining and ultrastructural examinations on pulmonary arteries confirmed the intracellular distribution of exogenous mitochondria and revealed the possible mitochondrial transfer from pulmonary artery endothelial cells into smooth muscle cells in part through their intercellular space and intercellular junctions. The transplantation of mitochondria derived from femoral artery smooth muscle cells inhibited acute hypoxia-triggered pulmonary vasoconstriction, attenuated chronic hypoxia-induced pulmonary vascular remodeling, and thus prevented the development of pulmonary hypertension or cured the established pulmonary hypertension in rats exposed to chronic hypoxia. Our findings suggest that mitochondrial transplantation possesses potential implications for exploring a novel therapeutic and preventive strategy against pulmonary hypertension.
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Affiliation(s)
- Liping Zhu
- Department of Pathophysiology, School of Basic Medicine, Huazhong University of Science and Technology (HUST), Wuhan, Hubei, China.,Key Laboratory of Pulmonary Diseases of Ministry of Health, Huazhong University of Science and Technology (HUST), Wuhan, Hubei, China
| | - Jiwei Zhang
- Department of Pathophysiology, School of Basic Medicine, Huazhong University of Science and Technology (HUST), Wuhan, Hubei, China.,Key Laboratory of Pulmonary Diseases of Ministry of Health, Huazhong University of Science and Technology (HUST), Wuhan, Hubei, China.,Department of Pathology, Union Hospital, Huazhong University of Science and Technology (HUST), Wuhan, Hubei, China
| | - Juan Zhou
- Department of Pathophysiology, School of Basic Medicine, Huazhong University of Science and Technology (HUST), Wuhan, Hubei, China.,Key Laboratory of Pulmonary Diseases of Ministry of Health, Huazhong University of Science and Technology (HUST), Wuhan, Hubei, China.,Current address: Department of Clinical Laboratory of Xuzhou Central Hospital, Xuzhou, China
| | - Yankai Lu
- Department of Pathophysiology, School of Basic Medicine, Huazhong University of Science and Technology (HUST), Wuhan, Hubei, China.,Key Laboratory of Pulmonary Diseases of Ministry of Health, Huazhong University of Science and Technology (HUST), Wuhan, Hubei, China
| | - Songling Huang
- Department of Pathophysiology, School of Basic Medicine, Huazhong University of Science and Technology (HUST), Wuhan, Hubei, China.,Key Laboratory of Pulmonary Diseases of Ministry of Health, Huazhong University of Science and Technology (HUST), Wuhan, Hubei, China
| | - Rui Xiao
- Department of Pathophysiology, School of Basic Medicine, Huazhong University of Science and Technology (HUST), Wuhan, Hubei, China.,Key Laboratory of Pulmonary Diseases of Ministry of Health, Huazhong University of Science and Technology (HUST), Wuhan, Hubei, China
| | - Xiangyuan Yu
- Department of Pathophysiology, School of Basic Medicine, Huazhong University of Science and Technology (HUST), Wuhan, Hubei, China.,Key Laboratory of Pulmonary Diseases of Ministry of Health, Huazhong University of Science and Technology (HUST), Wuhan, Hubei, China
| | - Xianqin Zeng
- Department of Pathophysiology, School of Basic Medicine, Huazhong University of Science and Technology (HUST), Wuhan, Hubei, China.,Key Laboratory of Pulmonary Diseases of Ministry of Health, Huazhong University of Science and Technology (HUST), Wuhan, Hubei, China
| | - Bingxun Liu
- Department of Pathophysiology, School of Basic Medicine, Huazhong University of Science and Technology (HUST), Wuhan, Hubei, China.,Key Laboratory of Pulmonary Diseases of Ministry of Health, Huazhong University of Science and Technology (HUST), Wuhan, Hubei, China
| | - Fangbo Liu
- Department of Pathophysiology, School of Basic Medicine, Huazhong University of Science and Technology (HUST), Wuhan, Hubei, China.,Key Laboratory of Pulmonary Diseases of Ministry of Health, Huazhong University of Science and Technology (HUST), Wuhan, Hubei, China
| | - Mengxiang Sun
- Department of Pathophysiology, School of Basic Medicine, Huazhong University of Science and Technology (HUST), Wuhan, Hubei, China.,Key Laboratory of Pulmonary Diseases of Ministry of Health, Huazhong University of Science and Technology (HUST), Wuhan, Hubei, China
| | - Mao Dai
- Department of Pathophysiology, School of Basic Medicine, Huazhong University of Science and Technology (HUST), Wuhan, Hubei, China.,Key Laboratory of Pulmonary Diseases of Ministry of Health, Huazhong University of Science and Technology (HUST), Wuhan, Hubei, China
| | - Qiang Hao
- Department of Pathophysiology, School of Basic Medicine, Huazhong University of Science and Technology (HUST), Wuhan, Hubei, China.,Key Laboratory of Pulmonary Diseases of Ministry of Health, Huazhong University of Science and Technology (HUST), Wuhan, Hubei, China
| | - Jiansha Li
- Key Laboratory of Pulmonary Diseases of Ministry of Health, Huazhong University of Science and Technology (HUST), Wuhan, Hubei, China.,Department of Pathology, Tongji Hospital, Huazhong University of Science and Technology (HUST), Wuhan, Hubei, China
| | - Tao Wang
- Key Laboratory of Pulmonary Diseases of Ministry of Health, Huazhong University of Science and Technology (HUST), Wuhan, Hubei, China.,Department of Respiratory and Critical Care Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology (HUST), Wuhan, Hubei, China
| | - Tongfei Li
- Department of Pathology, School of Basic Medical Sciences, Hubei University of Medicine, Shiyan, China
| | - Qinghua Hu
- Department of Pathophysiology, School of Basic Medicine, Huazhong University of Science and Technology (HUST), Wuhan, Hubei, China.,Key Laboratory of Pulmonary Diseases of Ministry of Health, Huazhong University of Science and Technology (HUST), Wuhan, Hubei, China
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22
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The suppressive role of calcium sensing receptor in endometrial cancer. Sci Rep 2018; 8:1076. [PMID: 29348629 PMCID: PMC5773571 DOI: 10.1038/s41598-018-19286-1] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2016] [Accepted: 09/18/2017] [Indexed: 12/14/2022] Open
Abstract
Studies have shown that calcium sensing receptor (CaSR) is involved in the progressions of several human cancers. However, the role of CaSR in endometrial cancer remains unknown. This study provides a preliminary analysis of the CaSR effect on endometrial cancer development. Ectopic CaSR expression by lentiviral transfection (CaSR-OV) in Ishikawa cells significantly increased intracellular calcium ([Ca2+]i) levels and cell apoptosis. E-cadherin and β-catenin expression and complex formation at the membrane were increased in CaSR-OV Ishikawa cells relative to control Ishikawa cells (vector). Furthermore, CaSR-OV Ishikawa cells showed a reduced invasive potential, which was attributed to E-cadherin/β-catenin complex formation. Moreover, a reduction in CaSR expression in endometrial cancer relative to normal specimens was evident by immunohistochemistry and was positively associated with E-cadherin, but not β-catenin, expression. Furthermore, VEGFR3 was significantly down-regulated in CaSR-OV Ishikawa cells. Additionally, an immunohistochemical analysis showed that VEGFR3 was significantly increased in endometrial cancer compared with the normal endometrium and was inversely correlated with CaSR expression. However, the CaSR knockdown produced the opposite effects. These findings suggest an inhibitory role for CaSR in endometrial cancer. Therefore, reduced CaSR expression may be a suitable explanation and valuable predictor for endometrial cancer progression.
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23
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Zhou J, Zhang J, Lu Y, Huang S, Xiao R, Zeng X, Zhang X, Li J, Wang T, Li T, Zhu L, Hu Q. Mitochondrial transplantation attenuates hypoxic pulmonary vasoconstriction. Oncotarget 2017; 7:31284-98. [PMID: 27121314 PMCID: PMC5058756 DOI: 10.18632/oncotarget.8893] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2016] [Accepted: 04/02/2016] [Indexed: 01/15/2023] Open
Abstract
Hypoxia triggers pulmonary vasoconstriction, however induces relaxation of systemic arteries such as femoral arteries. Mitochondria are functionally and structurally heterogeneous between different cell types. The aim of this study was to reveal whether mitochondrial heterogeneity controls the distinct responses of pulmonary versus systemic artery smooth muscle cells to hypoxia. Intact mitochondria were transplanted into Sprague-Dawley rat pulmonary artery smooth muscle cells in culture and pulmonary arteries in vitro. Mitochondria retained functional after transplantation. The cross transplantation of mitochondria between pulmonary and femoral artery smooth muscle cells reversed acute hypoxia-induced alterations in cell membrane potential, [Ca2+]i signaling in smooth muscle cells and constriction or relaxation of arteries. Furthermore, the high or low amount of reactive oxygen species generation from mitochondria and their divergent (dis-)abilities in activating extracellular Ca2+-sensing receptor in smooth muscle cells were found to cause cell membrane potential depolarization, [Ca2+]i elevation and constriction of pulmonary arteries versus cell membrane potential hyperpolarization, [Ca2+]i decline and relaxation of femoral arteries in response to hypoxia, respectively. Our findings suggest that mitochondria necessarily determine the behaviors of vascular smooth muscle cells in response to hypoxia.
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Affiliation(s)
- Juan Zhou
- Department of Pathophysiology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China.,Key Laboratory of Pulmonary Diseases of Ministry of Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China.,Current address: Department of Clinical Laboratory of Xuzhou Central Hospital, Xuzhou 221009, China
| | - Jiwei Zhang
- Department of Pathology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Yankai Lu
- Department of Pathophysiology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China.,Key Laboratory of Pulmonary Diseases of Ministry of Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China.,Department of Pathology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Songling Huang
- Department of Pathophysiology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China.,Key Laboratory of Pulmonary Diseases of Ministry of Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Rui Xiao
- Department of Pathophysiology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China.,Key Laboratory of Pulmonary Diseases of Ministry of Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Xianqin Zeng
- Department of Pathophysiology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China.,Key Laboratory of Pulmonary Diseases of Ministry of Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Xiuyun Zhang
- Department of Pathophysiology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China.,Key Laboratory of Pulmonary Diseases of Ministry of Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Jiansha Li
- Key Laboratory of Pulmonary Diseases of Ministry of Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China.,Department of Pathology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Tao Wang
- Key Laboratory of Pulmonary Diseases of Ministry of Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China.,Department of Respiratory and Critical Care Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Tongfei Li
- Department of Pathology, School of Basic Medical Sciences, Hubei University of Medicine, Shiyan 442000, China
| | - Liping Zhu
- Department of Pathophysiology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China.,Key Laboratory of Pulmonary Diseases of Ministry of Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Qinghua Hu
- Department of Pathophysiology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China.,Key Laboratory of Pulmonary Diseases of Ministry of Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
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24
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Zhu L, Lu Y, Zhang J, Hu Q. Subcellular Redox Signaling. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2017; 967:385-398. [DOI: 10.1007/978-3-319-63245-2_25] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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25
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Strielkov I, Pak O, Sommer N, Weissmann N. Recent advances in oxygen sensing and signal transduction in hypoxic pulmonary vasoconstriction. J Appl Physiol (1985) 2017; 123:1647-1656. [PMID: 28751366 DOI: 10.1152/japplphysiol.00103.2017] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Hypoxic pulmonary vasoconstriction (HPV) is a physiological reaction, which adapts lung perfusion to regional ventilation and optimizes gas exchange. Impaired HPV may cause systemic hypoxemia, while generalized HPV contributes to the development of pulmonary hypertension. The triggering mechanisms underlying HPV are still not fully elucidated. Several hypotheses are currently under debate, including a possible decrease as well as an increase in reactive oxygen species as a triggering event. Recent findings suggest an increase in the production of reactive oxygen species in pulmonary artery smooth muscle cells by complex III of the mitochondrial electron transport chain and occurrence of oxygen sensing at complex IV. Other essential components are voltage-dependent potassium and possibly L-type, transient receptor potential channel 6, and transient receptor potential vanilloid 4 channels. The release of arachidonic acid metabolites appears also to be involved in HPV regulation. Further investigation of the HPV mechanisms will facilitate the development of novel therapeutic strategies for the treatment of HPV-related disorders.
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Affiliation(s)
- Ievgen Strielkov
- Excellence Cluster Cardiopulmonary System, University of Giessen Lung Center, German Center for Lung Research (DZL), Justus-Liebig-University, Giessen , Germany
| | - Oleg Pak
- Excellence Cluster Cardiopulmonary System, University of Giessen Lung Center, German Center for Lung Research (DZL), Justus-Liebig-University, Giessen , Germany
| | - Natasha Sommer
- Excellence Cluster Cardiopulmonary System, University of Giessen Lung Center, German Center for Lung Research (DZL), Justus-Liebig-University, Giessen , Germany
| | - Norbert Weissmann
- Excellence Cluster Cardiopulmonary System, University of Giessen Lung Center, German Center for Lung Research (DZL), Justus-Liebig-University, Giessen , Germany
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26
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Chen TX, Xu XY, Zhao Z, Zhao FY, Gao YM, Yan XH, Wan Y. Hydrogen peroxide is a critical regulator of the hypoxia-induced alterations of store-operated Ca2+ entry into rat pulmonary arterial smooth muscle cells. Am J Physiol Lung Cell Mol Physiol 2017; 312:L477-L487. [DOI: 10.1152/ajplung.00138.2016] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2016] [Revised: 01/23/2017] [Accepted: 01/23/2017] [Indexed: 12/28/2022] Open
Abstract
To investigate the association between store-operated Ca2+ entry (SOCE) and reactive oxygen species (ROS) during hypoxia, this study determined the changes of transient receptor potential canonical 1 (TRPC1) and Orai1, two candidate proteins for store-operated Ca2+ (SOC) channels and their gate regulator, stromal interaction molecule 1 (STIM1), in a hypoxic environment and their relationship with ROS in pulmonary arterial smooth muscle cells (PASMCs). Exposure to hypoxia caused a transient Ca2+ spike and subsequent Ca2+ plateau of SOCE to be intensified in PASMCs when TRPC1, STIM1, and Orai1 were upregulated. SOCE in cells transfected with specific short hairpin RNA (shRNA) constructs was almost completely eliminated by the knockdown of TRPC1, STIM1, or Orai1 alone and was no longer affected by hypoxia exposure. Hypoxia-induced SOCE enhancement was further strengthened by PEG-SOD but was attenuated by PEG-catalase, with correlated changes to intracellular hydrogen peroxide (H2O2) levels and protein levels of TRPC1, STIM1, and Orai1. Exogenous H2O2 could mimic alterations of the interactions of STIM1 with TRPC1 and Orai1 in hypoxic cells. These findings suggest that TRPC1, STIM1, and Orai1 are essential for the initiation of SOCE in PASMCs. Hypoxia-induced ROS promoted the expression and interaction of the SOC channel molecules and their gate regulator via their converted product, H2O2.
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Affiliation(s)
- Tao-Xiang Chen
- Department of Physiology, School of Basic Medical Sciences, Wuhan University, Wuhan, Hubei, China
| | - Xiao-Ya Xu
- Department of Physiology, School of Basic Medical Sciences, Wuhan University, Wuhan, Hubei, China
| | - Zhao Zhao
- Department of Physiology, School of Basic Medical Sciences, Wuhan University, Wuhan, Hubei, China
| | - Fang-Yu Zhao
- Department of Physiology, School of Basic Medical Sciences, Wuhan University, Wuhan, Hubei, China
| | - Yi-Mei Gao
- Department of Physiology, School of Basic Medical Sciences, Wuhan University, Wuhan, Hubei, China
| | - Xiao-Hong Yan
- Department of Physiology, School of Basic Medical Sciences, Wuhan University, Wuhan, Hubei, China
| | - Yu Wan
- Department of Physiology, School of Basic Medical Sciences, Wuhan University, Wuhan, Hubei, China
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27
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Zeng X, Zhu L, Xiao R, Liu B, Sun M, Liu F, Hao Q, Lu Y, Zhang J, Li J, Wang T, Wei X, Hu Q. Hypoxia-Induced Mitogenic Factor Acts as a Nonclassical Ligand of Calcium-Sensing Receptor, Therapeutically Exploitable for Intermittent Hypoxia-Induced Pulmonary Hypertension. Hypertension 2017; 69:844-854. [PMID: 28348014 DOI: 10.1161/hypertensionaha.116.08743] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2016] [Revised: 12/03/2016] [Accepted: 02/26/2017] [Indexed: 11/16/2022]
Abstract
Hypoxia-induced mitogenic factor (HIMF) is an inflammatory cytokine playing important role(s) in the development of hypoxic pulmonary hypertension. The molecular target mediating HIMF-stimulated downstream events remains unclear. The coimmunoprecipitation screen identified extracellular calcium-sensing receptor (CaSR) as the binding partner for HIMF in pulmonary artery smooth muscle cells. The yeast 2-hybrid assay then revealed the binding of HIMF to the intracellular, not the extracellular, domain of extracellular CaSR. The binding of HIMF enhanced the activity of extracellular CaSR and mediated hypoxia-evoked proliferation of pulmonary artery smooth cells and the development of pulmonary vascular remodeling and pulmonary hypertension, all of which was specifically attenuated by a synthesized membrane-permeable peptide flanking the core amino acids of the intracellular binding domain of extracellular CaSR. Thus, HIMF induces pulmonary hypertension as a nonclassical ligand of extracellular CaSR, and the binding motif of extracellular CaSR can be therapeutically exploitable.
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Affiliation(s)
- Xianqin Zeng
- From the Department of Pathophysiology, School of Basic Medicine (X.Z., L.Z., R.X., B.L., M.S., F.L., Q. Hao, Q. Hu), Key Laboratory of Pulmonary Diseases of Ministry of Health (X.Z., L.Z., R.X., B.L., M.S., F.L., Q. Hao, Y.L., J.Z., J.L., T.W., Q. Hu), Department of Pathology, Tongji Hospital (Y.L., J.L.), Department of Pathology, Union Hospital (J.Z.), Department of Respiratory and Critical Care Medicine (T.W.), and Department of Cardiothoracic and Vascular Surgery, Tongji Hospital (X.W.), Tongji Medical College, Huazhong University of Science and Technology, Wuhan, People's Republic of China
| | - Liping Zhu
- From the Department of Pathophysiology, School of Basic Medicine (X.Z., L.Z., R.X., B.L., M.S., F.L., Q. Hao, Q. Hu), Key Laboratory of Pulmonary Diseases of Ministry of Health (X.Z., L.Z., R.X., B.L., M.S., F.L., Q. Hao, Y.L., J.Z., J.L., T.W., Q. Hu), Department of Pathology, Tongji Hospital (Y.L., J.L.), Department of Pathology, Union Hospital (J.Z.), Department of Respiratory and Critical Care Medicine (T.W.), and Department of Cardiothoracic and Vascular Surgery, Tongji Hospital (X.W.), Tongji Medical College, Huazhong University of Science and Technology, Wuhan, People's Republic of China
| | - Rui Xiao
- From the Department of Pathophysiology, School of Basic Medicine (X.Z., L.Z., R.X., B.L., M.S., F.L., Q. Hao, Q. Hu), Key Laboratory of Pulmonary Diseases of Ministry of Health (X.Z., L.Z., R.X., B.L., M.S., F.L., Q. Hao, Y.L., J.Z., J.L., T.W., Q. Hu), Department of Pathology, Tongji Hospital (Y.L., J.L.), Department of Pathology, Union Hospital (J.Z.), Department of Respiratory and Critical Care Medicine (T.W.), and Department of Cardiothoracic and Vascular Surgery, Tongji Hospital (X.W.), Tongji Medical College, Huazhong University of Science and Technology, Wuhan, People's Republic of China
| | - Bingxun Liu
- From the Department of Pathophysiology, School of Basic Medicine (X.Z., L.Z., R.X., B.L., M.S., F.L., Q. Hao, Q. Hu), Key Laboratory of Pulmonary Diseases of Ministry of Health (X.Z., L.Z., R.X., B.L., M.S., F.L., Q. Hao, Y.L., J.Z., J.L., T.W., Q. Hu), Department of Pathology, Tongji Hospital (Y.L., J.L.), Department of Pathology, Union Hospital (J.Z.), Department of Respiratory and Critical Care Medicine (T.W.), and Department of Cardiothoracic and Vascular Surgery, Tongji Hospital (X.W.), Tongji Medical College, Huazhong University of Science and Technology, Wuhan, People's Republic of China
| | - Mengxiang Sun
- From the Department of Pathophysiology, School of Basic Medicine (X.Z., L.Z., R.X., B.L., M.S., F.L., Q. Hao, Q. Hu), Key Laboratory of Pulmonary Diseases of Ministry of Health (X.Z., L.Z., R.X., B.L., M.S., F.L., Q. Hao, Y.L., J.Z., J.L., T.W., Q. Hu), Department of Pathology, Tongji Hospital (Y.L., J.L.), Department of Pathology, Union Hospital (J.Z.), Department of Respiratory and Critical Care Medicine (T.W.), and Department of Cardiothoracic and Vascular Surgery, Tongji Hospital (X.W.), Tongji Medical College, Huazhong University of Science and Technology, Wuhan, People's Republic of China
| | - Fangbo Liu
- From the Department of Pathophysiology, School of Basic Medicine (X.Z., L.Z., R.X., B.L., M.S., F.L., Q. Hao, Q. Hu), Key Laboratory of Pulmonary Diseases of Ministry of Health (X.Z., L.Z., R.X., B.L., M.S., F.L., Q. Hao, Y.L., J.Z., J.L., T.W., Q. Hu), Department of Pathology, Tongji Hospital (Y.L., J.L.), Department of Pathology, Union Hospital (J.Z.), Department of Respiratory and Critical Care Medicine (T.W.), and Department of Cardiothoracic and Vascular Surgery, Tongji Hospital (X.W.), Tongji Medical College, Huazhong University of Science and Technology, Wuhan, People's Republic of China
| | - Qiang Hao
- From the Department of Pathophysiology, School of Basic Medicine (X.Z., L.Z., R.X., B.L., M.S., F.L., Q. Hao, Q. Hu), Key Laboratory of Pulmonary Diseases of Ministry of Health (X.Z., L.Z., R.X., B.L., M.S., F.L., Q. Hao, Y.L., J.Z., J.L., T.W., Q. Hu), Department of Pathology, Tongji Hospital (Y.L., J.L.), Department of Pathology, Union Hospital (J.Z.), Department of Respiratory and Critical Care Medicine (T.W.), and Department of Cardiothoracic and Vascular Surgery, Tongji Hospital (X.W.), Tongji Medical College, Huazhong University of Science and Technology, Wuhan, People's Republic of China
| | - Yankai Lu
- From the Department of Pathophysiology, School of Basic Medicine (X.Z., L.Z., R.X., B.L., M.S., F.L., Q. Hao, Q. Hu), Key Laboratory of Pulmonary Diseases of Ministry of Health (X.Z., L.Z., R.X., B.L., M.S., F.L., Q. Hao, Y.L., J.Z., J.L., T.W., Q. Hu), Department of Pathology, Tongji Hospital (Y.L., J.L.), Department of Pathology, Union Hospital (J.Z.), Department of Respiratory and Critical Care Medicine (T.W.), and Department of Cardiothoracic and Vascular Surgery, Tongji Hospital (X.W.), Tongji Medical College, Huazhong University of Science and Technology, Wuhan, People's Republic of China
| | - Jiwei Zhang
- From the Department of Pathophysiology, School of Basic Medicine (X.Z., L.Z., R.X., B.L., M.S., F.L., Q. Hao, Q. Hu), Key Laboratory of Pulmonary Diseases of Ministry of Health (X.Z., L.Z., R.X., B.L., M.S., F.L., Q. Hao, Y.L., J.Z., J.L., T.W., Q. Hu), Department of Pathology, Tongji Hospital (Y.L., J.L.), Department of Pathology, Union Hospital (J.Z.), Department of Respiratory and Critical Care Medicine (T.W.), and Department of Cardiothoracic and Vascular Surgery, Tongji Hospital (X.W.), Tongji Medical College, Huazhong University of Science and Technology, Wuhan, People's Republic of China
| | - Jiansha Li
- From the Department of Pathophysiology, School of Basic Medicine (X.Z., L.Z., R.X., B.L., M.S., F.L., Q. Hao, Q. Hu), Key Laboratory of Pulmonary Diseases of Ministry of Health (X.Z., L.Z., R.X., B.L., M.S., F.L., Q. Hao, Y.L., J.Z., J.L., T.W., Q. Hu), Department of Pathology, Tongji Hospital (Y.L., J.L.), Department of Pathology, Union Hospital (J.Z.), Department of Respiratory and Critical Care Medicine (T.W.), and Department of Cardiothoracic and Vascular Surgery, Tongji Hospital (X.W.), Tongji Medical College, Huazhong University of Science and Technology, Wuhan, People's Republic of China
| | - Tao Wang
- From the Department of Pathophysiology, School of Basic Medicine (X.Z., L.Z., R.X., B.L., M.S., F.L., Q. Hao, Q. Hu), Key Laboratory of Pulmonary Diseases of Ministry of Health (X.Z., L.Z., R.X., B.L., M.S., F.L., Q. Hao, Y.L., J.Z., J.L., T.W., Q. Hu), Department of Pathology, Tongji Hospital (Y.L., J.L.), Department of Pathology, Union Hospital (J.Z.), Department of Respiratory and Critical Care Medicine (T.W.), and Department of Cardiothoracic and Vascular Surgery, Tongji Hospital (X.W.), Tongji Medical College, Huazhong University of Science and Technology, Wuhan, People's Republic of China
| | - Xiang Wei
- From the Department of Pathophysiology, School of Basic Medicine (X.Z., L.Z., R.X., B.L., M.S., F.L., Q. Hao, Q. Hu), Key Laboratory of Pulmonary Diseases of Ministry of Health (X.Z., L.Z., R.X., B.L., M.S., F.L., Q. Hao, Y.L., J.Z., J.L., T.W., Q. Hu), Department of Pathology, Tongji Hospital (Y.L., J.L.), Department of Pathology, Union Hospital (J.Z.), Department of Respiratory and Critical Care Medicine (T.W.), and Department of Cardiothoracic and Vascular Surgery, Tongji Hospital (X.W.), Tongji Medical College, Huazhong University of Science and Technology, Wuhan, People's Republic of China
| | - Qinghua Hu
- From the Department of Pathophysiology, School of Basic Medicine (X.Z., L.Z., R.X., B.L., M.S., F.L., Q. Hao, Q. Hu), Key Laboratory of Pulmonary Diseases of Ministry of Health (X.Z., L.Z., R.X., B.L., M.S., F.L., Q. Hao, Y.L., J.Z., J.L., T.W., Q. Hu), Department of Pathology, Tongji Hospital (Y.L., J.L.), Department of Pathology, Union Hospital (J.Z.), Department of Respiratory and Critical Care Medicine (T.W.), and Department of Cardiothoracic and Vascular Surgery, Tongji Hospital (X.W.), Tongji Medical College, Huazhong University of Science and Technology, Wuhan, People's Republic of China.
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28
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Xiao R, Su Y, Feng T, Sun M, Liu B, Zhang J, Lu Y, Li J, Wang T, Zhu L, Hu Q. Monocrotaline Induces Endothelial Injury and Pulmonary Hypertension by Targeting the Extracellular Calcium-Sensing Receptor. J Am Heart Assoc 2017; 6:JAHA.116.004865. [PMID: 28330842 PMCID: PMC5533002 DOI: 10.1161/jaha.116.004865] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
BACKGROUND Monocrotaline has been widely used to establish an animal model of pulmonary hypertension. The molecular target underlying monocrotaline-induced pulmonary artery endothelial injury and pulmonary hypertension remains unknown. The extracellular calcium-sensing receptor (CaSR) and particularly its extracellular domain hold the potential structural basis for monocrotaline to bind. This study aimed to reveal whether monocrotaline induces pulmonary hypertension by targeting the CaSR. METHODS AND RESULTS Nuclear magnetic resonance screening through WaterLOGSY (water ligand-observed gradient spectroscopy) and saturation transfer difference on protein preparation demonstrated the binding of monocrotaline to the CaSR. Immunocytochemical staining showed colocalization of monocrotaline with the CaSR in cultured pulmonary artery endothelial cells. Cellular thermal shift assay further verified the binding of monocrotaline to the CaSR in pulmonary arteries from monocrotaline-injected rats. Monocrotaline enhanced the assembly of CaSR, triggered the mobilization of calcium signaling, and damaged pulmonary artery endothelial cells in a CaSR-dependent manner. Finally, monocrotaline-induced pulmonary hypertension in rats was significantly attenuated or abolished by the inhibitor, the general or lung knockdown or knockout of CaSR. CONCLUSIONS Monocrotaline aggregates on and activates the CaSR of pulmonary artery endothelial cells to trigger endothelial damage and, ultimately, induces pulmonary hypertension.
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Affiliation(s)
- Rui Xiao
- Department of Pathophysiology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology (HUST), Wuhan, China.,Key Laboratory of Pulmonary Diseases of Ministry of Health, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology (HUST), Wuhan, China
| | - Yuan Su
- Key Laboratory of Pulmonary Diseases of Ministry of Health, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology (HUST), Wuhan, China.,Department of Respiratory Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology (HUST), Wuhan, China
| | - Tian Feng
- Department of Pathophysiology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology (HUST), Wuhan, China.,Key Laboratory of Pulmonary Diseases of Ministry of Health, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology (HUST), Wuhan, China
| | - Mengxiang Sun
- Department of Pathophysiology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology (HUST), Wuhan, China.,Key Laboratory of Pulmonary Diseases of Ministry of Health, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology (HUST), Wuhan, China
| | - Bingxun Liu
- Department of Pathophysiology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology (HUST), Wuhan, China.,Key Laboratory of Pulmonary Diseases of Ministry of Health, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology (HUST), Wuhan, China
| | - Jiwei Zhang
- Key Laboratory of Pulmonary Diseases of Ministry of Health, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology (HUST), Wuhan, China.,Department of Pathology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology (HUST), Wuhan, China
| | - Yankai Lu
- Key Laboratory of Pulmonary Diseases of Ministry of Health, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology (HUST), Wuhan, China.,Department of Pathology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology (HUST), Wuhan, China
| | - Jiansha Li
- Key Laboratory of Pulmonary Diseases of Ministry of Health, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology (HUST), Wuhan, China.,Department of Pathology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology (HUST), Wuhan, China
| | - Tao Wang
- Key Laboratory of Pulmonary Diseases of Ministry of Health, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology (HUST), Wuhan, China.,Department of Respiratory Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology (HUST), Wuhan, China
| | - Liping Zhu
- Department of Pathophysiology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology (HUST), Wuhan, China .,Key Laboratory of Pulmonary Diseases of Ministry of Health, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology (HUST), Wuhan, China
| | - Qinghua Hu
- Department of Pathophysiology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology (HUST), Wuhan, China .,Key Laboratory of Pulmonary Diseases of Ministry of Health, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology (HUST), Wuhan, China.,Key Laboratory of Molecular Biophysics of the Ministry of Education, Huazhong University of Science and Technology (HUST), Wuhan, China
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29
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Wang MM, Li H, Zhang FF, Ma KT, Cao WW, Gu Q. [Role of calcium-sensing receptor in neonatal mice with persistent pulmonary hypertension]. ZHONGGUO DANG DAI ER KE ZA ZHI = CHINESE JOURNAL OF CONTEMPORARY PEDIATRICS 2017; 19:208-214. [PMID: 28202122 PMCID: PMC7389458 DOI: 10.7499/j.issn.1008-8830.2017.02.016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Received: 08/27/2016] [Accepted: 12/21/2016] [Indexed: 06/06/2023]
Abstract
OBJECTIVE To study the effect of calcium-sensing receptor (CaSR) agonists and antagonists on the expression of CaSR in neonatal mice with persistent pulmonary hypertension (PPHN), and to clarify the role of CaSR in neonatal mice with PPHN. METHODS Forty-nine neonatal mice were randomly divided into four groups: control (n=10), hypoxia (PPHN; n=11), agonist (n=13), and antagonist (n=15). The mice in the PPHN, agonist, and antagonist groups were exposed to an oxygen concentration of 12%, and those in the control group were exposed to the air. The mice in the agonist and antagonist groups were intraperitoneally injected with gadolinium chloride (16 mg/kg) and NPS2390 (1 mg/kg) respectively once daily. Those in the PPHN and the control groups were given normal saline daily. All the mice were treated for 14 consecutive days. Hematoxylin and eosin staining and immunohistochemistry were used to observe the changes in pulmonary vessels. Laser confocal microscopy was used to observe the site of CaSR expression and measure its content in lung tissues. qRT-PCR and Western blot were used to measure the mRNA and protein expression of CaSR in lung tissues. RESULTS Compared with the control group, the PPHN group had significant increases in the pulmonary small artery wall thickness and the ratio of right to left ventricular wall thickness (P<0.05), which suggested that the model was successfully prepared. Compared with the control group, the PPHN group had a significant increase in the mRNA and protein expression of CaSR (P<0.05), and the agonist group had a significantly greater increase (P<0.05); the antagonist group had a significant reduction in the mRNA and protein expression of CaSR (P<0.05). CONCLUSIONS CaSR may play an important role in the development of PPHN induced by hypoxia in neonatal mice.
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Affiliation(s)
- Meng-Meng Wang
- Department of Pediatrics, First Affiliated Hospital of Shihezi University, Shihezi, Xinjiang 832000, China.
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Brinks L, Moonen RMJ, Moral-Sanz J, Barreira B, Kessels L, Perez-Vizcaino F, Cogolludo A, Villamor E. Hypoxia-induced contraction of chicken embryo mesenteric arteries: mechanisms and developmental changes. Am J Physiol Regul Integr Comp Physiol 2016; 311:R858-R869. [DOI: 10.1152/ajpregu.00461.2015] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2015] [Accepted: 08/10/2016] [Indexed: 11/22/2022]
Abstract
The fetal cardiovascular responses to acute hypoxia include a redistribution of the cardiac output toward the heart and the brain at the expense of other organs, such as the intestine. We hypothesized that hypoxia exerts a direct effect on the mesenteric artery (MA) that may contribute to this response. Using wire myography, we investigated the response to hypoxia (Po2 ~2.5 kPa for 20 min) of isolated MAs from 15- to 21-day chicken embryos (E15, E19, E21), and 1- to 45-day-old chickens (P1, P3, P14, P45). Agonist-induced pretone or an intact endothelium were not required to obtain a consistent and reproducible response to hypoxia, which showed a pattern of initial rapid phasic contraction followed by a sustained tonic contraction. Phasic contraction was reduced by elimination of extracellular Ca2+ or by presence of the neurotoxin tetrodotoxin, the α1-adrenoceptor antagonist prazosin, or inhibitors of L-type voltage-gated Ca2+ channels (nifedipine), mitochondrial electron transport chain (rotenone and antimycin A), and NADPH oxidase (VAS2870). The Rho-kinase inhibitor Y27632 impaired both phasic and tonic contraction and, when combined with elimination of extracellular Ca2+, hypoxia-induced contraction was virtually abolished. Hypoxic MA contraction was absent at E15 but present from E19 and increased toward the first days posthatching. It then decreased during the first weeks of life and P45 MAs were unable to sustain hypoxia-induced contraction over time. In conclusion, the results of the present study demonstrate that hypoxic vasoconstriction is an intrinsic feature of chicken MA vascular smooth muscle cells during late embryogenesis and the perinatal period.
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Affiliation(s)
- Leonie Brinks
- Department of Pediatrics, Maastricht University Medical Center (MUMC+), School for Oncology and Developmental Biology (GROW), Maastricht, The Netherlands
| | - Rob M. J. Moonen
- Department of Pediatrics, Maastricht University Medical Center (MUMC+), School for Oncology and Developmental Biology (GROW), Maastricht, The Netherlands
- Department of Pediatrics, Zuyderland Medical Center, Heerlen, The Netherlands; and
| | - Javier Moral-Sanz
- Department of Pharmacology, School of Medicine, Universidad Complutense de Madrid, Centro de Investigaciones Biomédicas en Red de Enfermedades Respiratorias (CIBERES), Instituto de Investigación Sanitaria Gregorio Marañón (IiSGM), Madrid, Spain
| | - Bianca Barreira
- Department of Pharmacology, School of Medicine, Universidad Complutense de Madrid, Centro de Investigaciones Biomédicas en Red de Enfermedades Respiratorias (CIBERES), Instituto de Investigación Sanitaria Gregorio Marañón (IiSGM), Madrid, Spain
| | - Lilian Kessels
- Department of Pediatrics, Maastricht University Medical Center (MUMC+), School for Oncology and Developmental Biology (GROW), Maastricht, The Netherlands
| | - Francisco Perez-Vizcaino
- Department of Pharmacology, School of Medicine, Universidad Complutense de Madrid, Centro de Investigaciones Biomédicas en Red de Enfermedades Respiratorias (CIBERES), Instituto de Investigación Sanitaria Gregorio Marañón (IiSGM), Madrid, Spain
| | - Angel Cogolludo
- Department of Pharmacology, School of Medicine, Universidad Complutense de Madrid, Centro de Investigaciones Biomédicas en Red de Enfermedades Respiratorias (CIBERES), Instituto de Investigación Sanitaria Gregorio Marañón (IiSGM), Madrid, Spain
| | - Eduardo Villamor
- Department of Pediatrics, Maastricht University Medical Center (MUMC+), School for Oncology and Developmental Biology (GROW), Maastricht, The Netherlands
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Su Y, Zhu L, Yu X, Cai L, Lu Y, Zhang J, Li T, Li J, Xia J, Xu F, Hu Q. Mitochondrial Transplantation Attenuates Airway Hyperresponsiveness by Inhibition of Cholinergic Hyperactivity. Am J Cancer Res 2016; 6:1244-60. [PMID: 27279915 PMCID: PMC4893649 DOI: 10.7150/thno.13804] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2015] [Accepted: 04/26/2016] [Indexed: 11/06/2022] Open
Abstract
Increased cholinergic activity has been highlighted in the pathogenesis of airway hyperresponsiveness, and alternations of mitochondrial structure and function appear to be involved in many lung diseases including airway hyperresponsiveness. It is crucial to clarify the cause-effect association between mitochondrial dysfunction and cholinergic hyperactivity in the pathogenesis of airway hyperresponsiveness. Male SD rats and cultured airway epithelial cells were exposed to cigarette smoke plus lipopolysaccharide administration; mitochondria isolated from airway epithelium were delivered into epithelial cells in vitro and in vivo. Both the cigarette smoke plus lipopolysaccharide-induced cholinergic hyperactivity in vitro and the airway hyperresponsiveness to acetylcholine in vivo were reversed by the transplantation of exogenous mitochondria. The rescue effects of exogenous mitochondria were imitated by the elimination of excessive reactive oxygen species or blockage of muscarinic M3 receptor, but inhibited by M receptor enhancer. Mitochondrial transplantation effectively attenuates cigarette smoke plus lipopolysaccharide-stimulated airway hyperresponsiveness through the inhibition of ROS-enhanced epithelial cholinergic hyperactivity.
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Sommer N, Strielkov I, Pak O, Weissmann N. Oxygen sensing and signal transduction in hypoxic pulmonary vasoconstriction. Eur Respir J 2015; 47:288-303. [PMID: 26493804 DOI: 10.1183/13993003.00945-2015] [Citation(s) in RCA: 99] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2015] [Accepted: 08/24/2015] [Indexed: 01/17/2023]
Abstract
Hypoxic pulmonary vasoconstriction (HPV), also known as the von Euler-Liljestrand mechanism, is an essential response of the pulmonary vasculature to acute and sustained alveolar hypoxia. During local alveolar hypoxia, HPV matches perfusion to ventilation to maintain optimal arterial oxygenation. In contrast, during global alveolar hypoxia, HPV leads to pulmonary hypertension. The oxygen sensing and signal transduction machinery is located in the pulmonary arterial smooth muscle cells (PASMCs) of the pre-capillary vessels, albeit the physiological response may be modulated in vivo by the endothelium. While factors such as nitric oxide modulate HPV, reactive oxygen species (ROS) have been suggested to act as essential mediators in HPV. ROS may originate from mitochondria and/or NADPH oxidases but the exact oxygen sensing mechanisms, as well as the question of whether increased or decreased ROS cause HPV, are under debate. ROS may induce intracellular calcium increase and subsequent contraction of PASMCs via direct or indirect interactions with protein kinases, phospholipases, sarcoplasmic calcium channels, transient receptor potential channels, voltage-dependent potassium channels and L-type calcium channels, whose relevance may vary under different experimental conditions. Successful identification of factors regulating HPV may allow development of novel therapeutic approaches for conditions of disturbed HPV.
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Affiliation(s)
- Natascha Sommer
- Excellence Cluster Cardiopulmonary System, University of Giessen Lung Center, German Center for Lung Research (DZL), Justus-Liebig-University, Giessen, Germany
| | - Ievgen Strielkov
- Excellence Cluster Cardiopulmonary System, University of Giessen Lung Center, German Center for Lung Research (DZL), Justus-Liebig-University, Giessen, Germany
| | - Oleg Pak
- Excellence Cluster Cardiopulmonary System, University of Giessen Lung Center, German Center for Lung Research (DZL), Justus-Liebig-University, Giessen, Germany
| | - Norbert Weissmann
- Excellence Cluster Cardiopulmonary System, University of Giessen Lung Center, German Center for Lung Research (DZL), Justus-Liebig-University, Giessen, Germany
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NADPH oxidases—do they play a role in TRPC regulation under hypoxia? Pflugers Arch 2015; 468:23-41. [DOI: 10.1007/s00424-015-1731-3] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2015] [Revised: 08/23/2015] [Accepted: 08/25/2015] [Indexed: 12/25/2022]
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Sun R, Xu F, Wang C, Dong E. NSFC spurs significant basic research progress of respiratory medicine in China. CLINICAL RESPIRATORY JOURNAL 2015; 11:271-284. [PMID: 26176299 PMCID: PMC7159156 DOI: 10.1111/crj.12351] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/25/2015] [Revised: 07/10/2015] [Accepted: 07/13/2015] [Indexed: 12/24/2022]
Abstract
Over the years, research in respiratory medicine has progressed rapidly in China. This commentary narrates the role of the National Natural Science Foundation of China (NSFC) in supporting the basic research of respiratory medicine, summarizes the major progress of respiratory medicine in China, and addresses the main future research directions sponsored by the NSFC.
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Affiliation(s)
- Ruijuan Sun
- Department of Health Sciences, National Natural Science Foundation of China, Beijing, China
| | - Feng Xu
- Department of Health Sciences, National Natural Science Foundation of China, Beijing, China.,Department of Infectious Diseases, Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Chen Wang
- Department of Respiratory and Critical Care Medicine, China-Japan Friendship Hospital, Beijing, China
| | - Erdan Dong
- Department of Health Sciences, National Natural Science Foundation of China, Beijing, China
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Penumatsa KC, Toksoz D, Warburton RR, Hilmer AJ, Liu T, Khosla C, Comhair SAA, Fanburg BL. Role of hypoxia-induced transglutaminase 2 in pulmonary artery smooth muscle cell proliferation. Am J Physiol Lung Cell Mol Physiol 2014; 307:L576-85. [PMID: 25128524 DOI: 10.1152/ajplung.00162.2014] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
We previously reported that transglutaminase 2 (TG2) activity is markedly elevated in lungs of hypoxia-exposed rodent models of pulmonary hypertension (PH). Since vascular remodeling of pulmonary artery smooth muscle cells (PASMCs) is important in PH, we undertook the present study to determine whether TG2 activity is altered in PASMCs with exposure to hypoxia and whether that alteration participates in their proliferative response to hypoxia. Cultured distal bovine (b) and proximal human (h) PASMCs were exposed to hypoxia (3% O2) or normoxia (21% O2). mRNA and protein expression were determined by PCR and Western blot analyses. TG2 activity and function were visualized and determined by fluorescent labeled 5-pentylamine biotin incorporation and immunoblotting of serotonylated fibronectin. Cell proliferation was assessed by [(3)H]thymidine incorporation assay. At 24 h, both TG2 expression and activity were stimulated by hypoxia in bPASMCs. Activation of TG2 by hypoxia was blocked by inhibition of the extracellular calcium-sensing receptor or the transient receptor potential channel V4. In contrast, TG2 expression was blocked by inhibition of the transcription factor hypoxia-inducible factor-1α, supporting the presence of separate mechanisms for stimulation of activity and expression of TG2. Pulmonary arterial hypertension patient-derived hPASMCs were found to proliferate significantly more rapidly and respond to hypoxia more strongly than control-derived hPASMCs. Similar to bovine cells, hypoxia-induced proliferation of patient-derived cells was blocked by inhibition of TG2 activity. Our results suggest an important role for TG2, mediated by intracellular calcium fluxes and HIF-1α, in hypoxia-induced PASMC proliferation and possibly in vascular remodeling in PH.
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Affiliation(s)
- Krishna C Penumatsa
- Pulmonary, Critical Care and Sleep Division, Tufts Medical Center, Tupper Research Institute, Boston, Massachusetts
| | - Deniz Toksoz
- Pulmonary, Critical Care and Sleep Division, Tufts Medical Center, Tupper Research Institute, Boston, Massachusetts
| | - Rod R Warburton
- Pulmonary, Critical Care and Sleep Division, Tufts Medical Center, Tupper Research Institute, Boston, Massachusetts
| | - Andrew J Hilmer
- Departments of Chemistry and Chemical Engineering, Stanford University, Stanford, California; and
| | - Tiegang Liu
- Pulmonary, Critical Care and Sleep Division, Tufts Medical Center, Tupper Research Institute, Boston, Massachusetts
| | - Chaitan Khosla
- Departments of Chemistry and Chemical Engineering, Stanford University, Stanford, California; and
| | - Suzy A A Comhair
- Department of Pathobiology, Lerner Research Institute, Cleveland Clinic, Cleveland, Ohio
| | - Barry L Fanburg
- Pulmonary, Critical Care and Sleep Division, Tufts Medical Center, Tupper Research Institute, Boston, Massachusetts;
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Peng X, Li HX, Shao HJ, Li GW, Sun J, Xi YH, Li HZ, Wang XY, Wang LN, Bai SZ, Zhang WH, Zhang L, Yang GD, Wu LY, Wang R, Xu CQ. Involvement of calcium-sensing receptors in hypoxia-induced vascular remodeling and pulmonary hypertension by promoting phenotypic modulation of small pulmonary arteries. Mol Cell Biochem 2014; 396:87-98. [DOI: 10.1007/s11010-014-2145-9] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2014] [Accepted: 07/11/2014] [Indexed: 12/19/2022]
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Tan R, Li J, Peng X, Zhu L, Cai L, Wang T, Su Y, Irani K, Hu Q. GAPDH is critical for superior efficacy of female bone marrow-derived mesenchymal stem cells on pulmonary hypertension. Cardiovasc Res 2013; 100:19-27. [DOI: 10.1093/cvr/cvt165] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 08/30/2023] Open
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Connolly MJ, Prieto-Lloret J, Becker S, Ward JPT, Aaronson PI. Hypoxic pulmonary vasoconstriction in the absence of pretone: essential role for intracellular Ca2+ release. J Physiol 2013; 591:4473-98. [PMID: 23774281 DOI: 10.1113/jphysiol.2013.253682] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Abstract
Hypoxic pulmonary vasoconstriction (HPV) maintains blood oxygenation during acute hypoxia but contributes to pulmonary hypertension during chronic hypoxia. The mechanisms of HPV remain controversial, in part because HPV is usually studied in the presence of agonist-induced preconstriction ('pretone'). This potentiates HPV but may obscure and distort its underlying mechanisms. We therefore carried out an extensive assessment of proposed mechanisms contributing to HPV in isolated intrapulmonary arteries (IPAs) in the absence of pretone by using a conventional small vessel myograph. Hypoxia elicited a biphasic constriction consisting of a small transient (phase 1) superimposed upon a sustained (phase 2) component. Neither phase was affected by the L-type Ca2+ channel antagonists diltiazem (10 and 30 μm) or nifedipine (3 μm). Application of the store-operated Ca2+ entry (SOCE) blockers BTP2 (10 μm) or SKF96365 (50 μm) attenuated phase 2 but not phase 1, whereas a lengthy (30 min) incubation in Ca2+-free physiological saline solution similarly reduced phase 2 but abolished phase 1. No further effect of inhibition of HPV was observed if the sarco/endoplasmic reticulum Ca2+-ATPase inhibitor cyclopiazonic acid (30 μm) was also applied during the 30 min incubation in Ca2+-free physiological saline solution. Pretreatment with 10 μm ryanodine and 15 mm caffeine abolished both phases, whereas treatment with 100 μm ryanodine attenuated both phases. The two-pore channel blocker NED-19 (1 μm) and the nicotinic acid adenine dinucleotide phosphate (NAADP) antagonist BZ194 (200 μm) had no effect on either phase of HPV. The lysosomal Ca2+-depleting agent concanamycin (1 μm) enhanced HPV if applied during hypoxia, but had no effect on HPV during a subsequent hypoxic challenge. The cyclic ADP ribose antagonist 8-bromo-cyclic ADP ribose (30 μm) had no effect on either phase of HPV. Neither the Ca2+-sensing receptor (CaSR) blocker NPS2390 (0.1 and 10 μm) nor FK506 (10 μm), a drug which displaces FKBP12.6 from ryanodine receptor 2 (RyR2), had any effect on HPV. HPV was virtually abolished by the rho kinase blocker Y-27632 (1 μm) and attenuated by the protein kinase C inhibitor Gö6983 (3 μm). Hypoxia for 45 min caused a significant increase in the ratio of oxidised to reduced glutathione (GSSG/GSH). HPV was unaffected by the NADPH oxidase inhibitor VAS2870 (10 μm), whereas phase 2 was inhibited but phase 1 was unaffected by the antioxidants ebselen (100 μm) and TEMPOL (3 mm). We conclude that both phases of HPV in this model are mainly dependent on [Ca2+]i release from the sarcoplasmic reticulum. Neither phase of HPV requires voltage-gated Ca2+ entry, but SOCE contributes to phase 2. We can detect no requirement for cyclic ADP ribose, NAADP-dependent lysosomal Ca2+ release, activation of the CaSR, or displacement of FKBP12.6 from RyR2 for either phase of HPV. Sustained HPV is associated with an oxidising shift in the GSSG/GSH redox potential and is inhibited by the antioxidants ebselen and TEMPOL, consistent with the concept that it requires an oxidising shift in the cell redox state or the generation of reactive oxygen species.
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Affiliation(s)
- Michelle J Connolly
- P. I. Aaronson: Room 1.19, Henriette Raphael House, Guy's Campus, King's College London, London SE1 9HN, UK.
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Firth AL, Won JY, Park WS. Regulation of ca(2+) signaling in pulmonary hypertension. THE KOREAN JOURNAL OF PHYSIOLOGY & PHARMACOLOGY : OFFICIAL JOURNAL OF THE KOREAN PHYSIOLOGICAL SOCIETY AND THE KOREAN SOCIETY OF PHARMACOLOGY 2013; 17:1-8. [PMID: 23439762 PMCID: PMC3579099 DOI: 10.4196/kjpp.2013.17.1.1] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/16/2012] [Revised: 12/12/2012] [Accepted: 12/18/2012] [Indexed: 01/08/2023]
Abstract
Understanding the cellular and molecular mechanisms involved in the development and progression of pulmonary hypertension (PH) remains imperative if we are to successfully improve the quality of life and life span of patients with the disease. A whole plethora of mechanisms are associated with the development and progression of PH. Such complexity makes it difficult to isolate one particular pathway to target clinically. Changes in intracellular free calcium concentration, the most common intracellular second messenger, can have significant impact in defining the pathogenic mechanisms leading to its development and persistence. Signaling pathways leading to the elevation of [Ca(2+)](cyt) contribute to pulmonary vasoconstriction, excessive proliferation of smooth muscle cells and ultimately pulmonary vascular remodeling. This current review serves to summarize the some of the most recent advances in the regulation of calcium during pulmonary hypertension.
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Affiliation(s)
- Amy L Firth
- Laboratory of Genetics, Salk Institute for Biological Studies, La Jolla, California, USA
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Yamamura A, Yamamura H, Guo Q, Zimnicka AM, Wan J, Ko EA, Smith KA, Pohl NM, Song S, Zeifman A, Makino A, Yuan JXJ. Dihydropyridine Ca(2+) channel blockers increase cytosolic [Ca(2+)] by activating Ca(2+)-sensing receptors in pulmonary arterial smooth muscle cells. Circ Res 2013; 112:640-50. [PMID: 23300272 DOI: 10.1161/circresaha.113.300897] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
RATIONALE An increase in cytosolic free Ca(2+) concentration ([Ca(2+)](cyt)) in pulmonary arterial smooth muscle cells (PASMC) is a major trigger for pulmonary vasoconstriction and an important stimulus for PASMC proliferation and pulmonary vascular remodeling. The dihydropyridine Ca(2+) channel blockers, such as nifedipine, have been used for treatment of idiopathic pulmonary arterial hypertension (IPAH). OBJECTIVE Our previous study demonstrated that the Ca(2+)-sensing receptor (CaSR) was upregulated and the extracellular Ca(2+)-induced increase in [Ca(2+)](cyt) was enhanced in PASMC from patients with IPAH and animals with experimental pulmonary hypertension. Here, we report that the dihydropyridines (eg, nifedipine) increase [Ca(2+)](cyt) by activating CaSR in PASMC from IPAH patients (in which CaSR is upregulated), but not in normal PASMC. METHODS AND RESULTS The nifedipine-mediated increase in [Ca(2+)](cyt) in IPAH-PASMC was concentration dependent with a half maximal effective concentration of 0.20 µmol/L. Knockdown of CaSR with siRNA in IPAH-PASMC significantly inhibited the nifedipine-induced increase in [Ca(2+)](cyt), whereas overexpression of CaSR in normal PASMC conferred the nifedipine-induced rise in [Ca(2+)](cyt). Other dihydropyridines, nicardipine and Bay K8644, had similar augmenting effects on the CaSR-mediated increase in [Ca(2+)](cyt) in IPAH-PASMC; however, the nondihydropyridine blockers, such as diltiazem and verapamil, had no effect on the CaSR-mediated rise in [Ca(2+)](cyt). CONCLUSIONS The dihydropyridine derivatives increase [Ca(2+)](cyt) by potentiating the activity of CaSR in PASMC independently of their blocking (or activating) effect on Ca(2+) channels; therefore, it is possible that the use of dihydropyridine Ca(2+) channel blockers (eg, nifedipine) to treat IPAH patients with upregulated CaSR in PASMC may exacerbate pulmonary hypertension.
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Affiliation(s)
- Aya Yamamura
- Department of Medicine, Section of Pulmonary, Critical Care, Sleep, and Allergy Medicine and Department of Pharmacology, Institute for Personalized Respiratory Medicine, Center for Cardiovascular Research, University of Illinois at Chicago, Chicago, IL 60612, USA
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Song S, Li J, Zhu L, Cai L, Xu Q, Ling C, Su Y, Hu Q. Irregular Ca(2+) oscillations regulate transcription via cumulative spike duration and spike amplitude. J Biol Chem 2012; 287:40246-55. [PMID: 23071118 DOI: 10.1074/jbc.m112.417154] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
BACKGROUND [Ca(2+)](i) oscillations are irregular and heterogeneous. RESULTS The correlations between NFκB/STAT3-GFP transcription and [Ca(2+)](i) spike amplitude/cumulative spike duration are revealed by simultaneous monitoring in single cells and validated in cell population. CONCLUSION [Ca(2+)](i) oscillations regulate transcription through [Ca(2+)](i) spike amplitude and cumulative spike duration. SIGNIFICANCE How irregular [Ca(2+)](i) oscillations control transcription is crucial for understanding biological [Ca(2+)](i) signal-regulated events. Agonist-stimulated [Ca(2+)](i) oscillations are universally irregular in their kinetics. How irregular [Ca(2+)](i) oscillations dynamically regulate agonist-stimulated downstream events has not been studied. To overcome the obstacles of irregularity and heterogeneity of [Ca(2+)](i) oscillations, agonist-stimulated [Ca(2+)](i) signaling and NFκB/STAT3-GFP nuclear translocation were simultaneously monitored in each single cell examined. The cause-effect relationship between [Ca(2+)](i) oscillation parameters and transcriptional activities was validated in cell populations through irregular [Ca(2+)](i) oscillations with varied parameters. The time duration of cumulative [Ca(2+)](i) elevations reaching the threshold [Ca(2+)](i) level for a transcriptional factor activation and [Ca(2+)](i) spike amplitude was found to control agonist-stimulated transcription and gene expression.
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Affiliation(s)
- Shanshan Song
- Department of Pathophysiology, School of Public Health, Tongji Medical College, Huazhong Science and Technology University, Wuhan 430030, People's Republic of China
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