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Tripathy S, Singh S, Banerjee M, Modi DR, Prakash A. Coagulation proteases and neurotransmitters in pathogenicity of glioblastoma multiforme. Int J Neurosci 2024; 134:398-408. [PMID: 35896309 DOI: 10.1080/00207454.2022.2107514] [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: 12/22/2021] [Revised: 07/10/2022] [Accepted: 07/15/2022] [Indexed: 10/16/2022]
Abstract
Glioblastoma is an aggressive type of cancer that begins in cells called astrocytes that support nerve cells that can occur in the brain or spinal cord. It can form in the brain or spinal cord. Despite the variety of modern therapies against GBM, it is still a deadly disease. Patients usually have a median survival of approximately 14 to 15 months from the diagnosis. Glioblastoma is also known as glioblastoma multiforme. The pathogenesis contributing to the proliferation and metastasis of cancer involves aberrations of multiple signalling pathways through multiple genetic mutations and altered gene expression. The coagulant factors like thrombin and tissue factor play a noteworthy role in cancer invasion. They are produced in the microenvironment of glioma through activation of protease-activated receptors (PARs) which are activated by coagulation proteases. PARs are members of family G-protein-coupled receptors (GPCRs) that are activated by coagulation proteases. These components play a key role in tumour cell angiogenesis, migration, invasion, and interactions with host vascular cells. Further, the release of neurotransmitters is also found to regulate malignancy in gliomas. Exploration of the interplay between malignant neural circuitry with the normal conditions is also decisive in finding effective therapies for these apparently invasive tumours. The present review discusses the molecular classification of gliomas, activation of PARs by coagulation protease, and its role in metastasis of gliomas. Further, the differential involvement of neurotransmitters in the pathogenesis of gliomas has also been discussed. Targeting these molecules may present a potential therapeutic approach for the treatment of gliomas.
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Affiliation(s)
- Sukanya Tripathy
- Molecular & Human Genetics Laboratory, Department of Zoology, University of Lucknow, Lucknow, India
- Department of Biotechnology, Babasaheb Bhimrao Ambedkar University, Lucknow, India
| | - Sanjay Singh
- Department of Biotechnology, Babasaheb Bhimrao Ambedkar University, Lucknow, India
| | - Monisha Banerjee
- Molecular & Human Genetics Laboratory, Department of Zoology, University of Lucknow, Lucknow, India
| | - Dinesh Raj Modi
- Department of Biotechnology, Babasaheb Bhimrao Ambedkar University, Lucknow, India
| | - Anand Prakash
- Department of Biotechnology, Mahatma Gandhi Central University, Motihari, India
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2
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Zhou J, Sun F, Zhang W, Feng Z, Yang Y, Mei Z. Novel insight into the therapeutical potential of flavonoids from traditional Chinese medicine against cerebral ischemia/reperfusion injury. Front Pharmacol 2024; 15:1352760. [PMID: 38487170 PMCID: PMC10937431 DOI: 10.3389/fphar.2024.1352760] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2023] [Accepted: 02/14/2024] [Indexed: 03/17/2024] Open
Abstract
Cerebral ischemia/reperfusion injury (CIRI) is a major contributor to poor prognosis of ischemic stroke. Flavonoids are a broad family of plant polyphenols which are abundant in traditional Chinese medicine (TCM) and have beneficial effects on several diseases including ischemic stroke. Accumulating studies have indicated that flavonoids derived from herbal TCM are effective in alleviating CIRI after ischemic stroke in vitro or in vivo, and exhibit favourable therapeutical potential. Herein, we systematically review the classification, metabolic absorption, neuroprotective efficacy, and mechanisms of TCM flavonoids against CIRI. The literature suggest that flavonoids exert potential medicinal functions including suppressing excitotoxicity, Ca2+ overloading, oxidative stress, inflammation, thrombin's cellular toxicity, different types of programmed cell deaths, and protecting the blood-brain barrier, as well as promoting neurogenesis in the recovery stage following ischemic stroke. Furthermore, we identified certain matters that should be taken into account in future research, as well as proposed difficulties and opportunities in transforming TCM-derived flavonoids into medications or functional foods for the treatment or prevention of CIRI. Overall, in this review we aim to provide novel ideas for the identification of new prospective medication candidates for the therapeutic strategy against ischemic stroke.
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Affiliation(s)
- Jing Zhou
- Key Laboratory of Hunan Province for Integrated Traditional Chinese and Western Medicine on Prevention and Treatment of Cardio-Cerebral Diseases, College of Integrated Traditional Chinese Medicine and Western Medicine, Hunan University of Chinese Medicine, Changsha, Hunan, China
| | - Feiyue Sun
- Key Laboratory of Hunan Province for Integrated Traditional Chinese and Western Medicine on Prevention and Treatment of Cardio-Cerebral Diseases, College of Integrated Traditional Chinese Medicine and Western Medicine, Hunan University of Chinese Medicine, Changsha, Hunan, China
| | - Wenli Zhang
- School of Pharmacy, Hunan University of Chinese Medicine, Changsha, Hunan, China
| | - Zhitao Feng
- Third-Grade Pharmacological Laboratory on Chinese Medicine Approved by State Administration of Traditional Chinese Medicine, College of Medicine and Health Sciences, China Three Gorges University, Yichang, Hubei, China
| | - Yi Yang
- The First Affiliated Hospital of Hunan Traditional Chinese Medical College, Zhuzhou, Hunan, China
| | - Zhigang Mei
- Key Laboratory of Hunan Province for Integrated Traditional Chinese and Western Medicine on Prevention and Treatment of Cardio-Cerebral Diseases, College of Integrated Traditional Chinese Medicine and Western Medicine, Hunan University of Chinese Medicine, Changsha, Hunan, China
- Third-Grade Pharmacological Laboratory on Chinese Medicine Approved by State Administration of Traditional Chinese Medicine, College of Medicine and Health Sciences, China Three Gorges University, Yichang, Hubei, China
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3
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Kuzmina IV, Ovchinnikova NV, Tolpygo SM. Serum Activity of Proteolytic Enzyme Trypsin in Rats under Conditions of Water and Food Deprivation. Bull Exp Biol Med 2023; 175:608-611. [PMID: 37861909 DOI: 10.1007/s10517-023-05910-2] [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: 02/20/2023] [Indexed: 10/21/2023]
Abstract
Trypsin is mainly regarded as a digestive enzyme, but there is evidence that activation of protease-activated receptor-2 (PAR-2) leads to behavioral changes. There are no data on trypsin activity in the serum of animals under conditions of thirst and starvation in the available literature. In our experiments, water deprivation led to a significant (p⩽0.05) increase in trypsin activity in rats, and food deprivation led to its decrease in comparison with controls (free access to water and food). After deprived rats received water and food, a decrease in trypsin activity was observed in both experimental groups. Changes in trypsin activity under conditions of water or food deprivation and after satiation were accompanied by shifts in some biochemical parameters of the bloods. Under conditions of metabolic stress (starvation and thirst), opposite changes in trypsin activity seem to indicate its participation in the mechanisms of adequate restructuring of metabolism and maintenance of vital processes in the body.
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Affiliation(s)
- I V Kuzmina
- P. K. Anokhin Research Institute of Normal Physiology, Moscow, Russia.
| | - N V Ovchinnikova
- P. K. Anokhin Research Institute of Normal Physiology, Moscow, Russia
| | - S M Tolpygo
- P. K. Anokhin Research Institute of Normal Physiology, Moscow, Russia
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Li F, Li D, Liu J, Tang S, Yan J, Li H, Wan Z, Wang L, Yan X. Activation of Protease-Activated Receptor-1 Causes Chronic Pain in Lupus-Prone Mice Via Suppressing Spinal Glial Glutamate Transporter Function and Enhancing Glutamatergic Synaptic Activity. THE JOURNAL OF PAIN 2023; 24:1163-1180. [PMID: 36641029 DOI: 10.1016/j.jpain.2023.01.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/13/2022] [Revised: 12/25/2022] [Accepted: 01/03/2023] [Indexed: 01/13/2023]
Abstract
Systemic lupus erythematosus (SLE) is an unpredictable autoimmune disease where the body's immune system mistakenly attacks healthy tissues in many parts of the body. Chronic pain is one of the most frequently reported symptoms among SLE patients. We previously reported that MRL lupus prone (MRL/lpr) mice develop hypersensitivity to mechanical and heat stimulation. In the present study, we found that the spinal protease-activated receptor-1(PAR1) plays an important role in the genesis of chronic pain in MRL/lpr mice. Female MRL/lpr mice with chronic pain had activation of astrocytes, over-expression of thrombin and PAR1, enhanced glutamatergic synaptic activity, as well as suppressed activity of adenosine monophosphate-activated protein kinase (AMPK) and glial glutamate transport function in the spinal cord. Intrathecal injection of either the PAR1 antagonist, or AMPK activator attenuated heat hyperalgesia and mechanical allodynia in MRL/lpr mice. Furthermore, we also identified that the enhanced glutamatergic synaptic activity and suppressed activity of glial glutamate transporters in the spinal dorsal horn of MRL/lpr mice are caused by activation of the PAR1 and suppression of AMPK signaling pathways. These findings suggest that targeting the PAR1 and AMPK signaling pathways in the spinal cord may be a useful approach for treating chronic pain caused by SLE. PERSPECTIVE: Our study provides evidence suggesting activation of PAR1 and suppression of AMPK in the spinal cord induces thermal hyperalgesia and mechanical allodynia in a lupus mouse model. Targeting signaling pathways regulating the PAR1 and AMPK could potentially provide a novel approach to the management of chronic pain caused by SLE.
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Affiliation(s)
- Fen Li
- Department of Neurology, Wuhan Third Hospital & Tongren Hospital of Wuhan University, Wuhan, Hubei, China
| | - Dongsheng Li
- Department of Cardiology, Wuhan Third Hospital & Tongren Hospital of Wuhan University, Wuhan, Hubei, China
| | - Jianguang Liu
- Department of Neurology, Wuhan Third Hospital & Tongren Hospital of Wuhan University, Wuhan, Hubei, China
| | - Shifan Tang
- Department of Cardiology, Wuhan Third Hospital & Tongren Hospital of Wuhan University, Wuhan, Hubei, China
| | - Jie Yan
- Department of Forensic Science, School of Basic Medical Science, Central South University, Changsha, Hunan, China
| | - Hongwei Li
- Department of Internal Medicine, School of Medicine, Wuhan University of Science and Technology, Wuhan, Hubei, China
| | - Zhengyun Wan
- Department of Internal Medicine, School of Medicine, Wuhan University of Science and Technology, Wuhan, Hubei, China
| | - Lian Wang
- Department of Internal Medicine, School of Medicine, Wuhan University of Science and Technology, Wuhan, Hubei, China
| | - Xisheng Yan
- Department of Cardiology, Wuhan Third Hospital & Tongren Hospital of Wuhan University, Wuhan, Hubei, China.
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Iannucci J, Grammas P. Thrombin, a Key Driver of Pathological Inflammation in the Brain. Cells 2023; 12:cells12091222. [PMID: 37174621 PMCID: PMC10177239 DOI: 10.3390/cells12091222] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2022] [Revised: 02/21/2023] [Accepted: 04/20/2023] [Indexed: 05/15/2023] Open
Abstract
Neurodegenerative diseases, including Alzheimer's disease (AD), are major contributors to death and disability worldwide. A multitude of evidence suggests that neuroinflammation is critical in neurodegenerative disease processes. Exploring the key mediators of neuroinflammation in AD, a prototypical neurodegenerative disease, could help identify pathologic inflammatory mediators and mechanisms in other neurodegenerative diseases. Elevated levels of the multifunctional inflammatory protein thrombin are commonly found in conditions that increase AD risk, including diabetes, atherosclerosis, and traumatic brain injury. Thrombin, a main driver of the coagulation cascade, has been identified as important to pathological events in AD and other neurodegenerative diseases. Furthermore, recent evidence suggests that coagulation cascade-associated proteins act as drivers of inflammation in the AD brain, and studies in both human populations and animal models support the view that abnormalities in thrombin generation promote AD pathology. Thrombin drives neuroinflammation through its pro-inflammatory activation of microglia, astrocytes, and endothelial cells. Due to the wide-ranging pro-inflammatory effects of thrombin in the brain, inhibiting thrombin could be an effective strategy for interrupting the inflammatory cascade which contributes to neurodegenerative disease progression and, as such, may be a potential therapeutic target for AD and other neurodegenerative diseases.
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Affiliation(s)
- Jaclyn Iannucci
- Department of Neuroscience and Experimental Therapeutics, School of Medicine, Texas A&M University, Bryan, TX 77807, USA
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Golderman V, Goldberg Z, Gofrit SG, Dori A, Maggio N, Chapman J, Sher I, Rotenstreich Y, Shavit-Stein E. PARIN5, a Novel Thrombin Receptor Antagonist Modulates a Streptozotocin Mice Model for Diabetic Encephalopathy. Int J Mol Sci 2023; 24:ijms24032021. [PMID: 36768341 PMCID: PMC9917200 DOI: 10.3390/ijms24032021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2022] [Revised: 01/16/2023] [Accepted: 01/17/2023] [Indexed: 01/22/2023] Open
Abstract
Diabetic encephalopathy (DE) is an inflammation-associated diabetes mellitus (DM) complication. Inflammation and coagulation are linked and are both potentially modulated by inhibiting the thrombin cellular protease-activated receptor 1 (PAR1). Our aim was to study whether coagulation pathway modulation affects DE. Diabetic C57BL/6 mice were treated with PARIN5, a novel PAR1 modulator. Behavioral changes in the open field and novel object recognition tests, serum neurofilament (NfL) levels and thrombin activity in central and peripheral nervous system tissue (CNS and PNS, respectively), brain mRNA expression of tumor necrosis factor α (TNF-α), Factor X (FX), prothrombin, and PAR1 were assessed. Subtle behavioral changes were detected in diabetic mice. These were accompanied by an increase in serum NfL, an increase in central and peripheral neural tissue thrombin activity, and TNF-α, FX, and prothrombin brain intrinsic mRNA expression. Systemic treatment with PARIN5 prevented the appearance of behavioral changes, normalized serum NfL and prevented the increase in peripheral but not central thrombin activity. PARIN5 treatment prevented the elevation of both TNF-α and FX but significantly elevated prothrombin expression. PARIN5 treatment prevents behavioral and neural damage in the DE model, suggesting it for future clinical research.
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Affiliation(s)
- Valery Golderman
- Department of Neurology, The Chaim Sheba Medical Center, Ramat Gan 52626202, Israel
- Department of Neurology and Neurosurgery, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv 6997801, Israel
| | - Zehavit Goldberg
- Department of Neurology, The Chaim Sheba Medical Center, Ramat Gan 52626202, Israel
- Goldschleger Eye Institute, The Sheba Medical Center, Ramat Gan 52626202, Israel
| | - Shany Guly Gofrit
- Department of Neurology, The Chaim Sheba Medical Center, Ramat Gan 52626202, Israel
| | - Amir Dori
- Department of Neurology, The Chaim Sheba Medical Center, Ramat Gan 52626202, Israel
- Department of Neurology and Neurosurgery, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv 6997801, Israel
- Talpiot Medical Leadership Program, The Chaim Sheba Medical Center, Ramat Gan 52626202, Israel
| | - Nicola Maggio
- Department of Neurology, The Chaim Sheba Medical Center, Ramat Gan 52626202, Israel
- Department of Neurology and Neurosurgery, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv 6997801, Israel
- Talpiot Medical Leadership Program, The Chaim Sheba Medical Center, Ramat Gan 52626202, Israel
- Sagol School of Neuroscience, Tel Aviv University, Tel Aviv 6997801, Israel
| | - Joab Chapman
- Department of Neurology, The Chaim Sheba Medical Center, Ramat Gan 52626202, Israel
- Department of Neurology and Neurosurgery, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv 6997801, Israel
- Robert and Martha Harden Chair in Mental and Neurological Diseases, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv 6997801, Israel
| | - Ifat Sher
- Goldschleger Eye Institute, The Sheba Medical Center, Ramat Gan 52626202, Israel
- Sagol School of Neuroscience, Tel Aviv University, Tel Aviv 6997801, Israel
- The TELEM Rubin Excellence in Biomedical Research Program, The Chaim Sheba Medical Center, Ramat Gan 52626202, Israel
- Department of Ophthalmology, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv 6997801, Israel
| | - Ygal Rotenstreich
- Goldschleger Eye Institute, The Sheba Medical Center, Ramat Gan 52626202, Israel
- Sagol School of Neuroscience, Tel Aviv University, Tel Aviv 6997801, Israel
- Department of Ophthalmology, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv 6997801, Israel
| | - Efrat Shavit-Stein
- Department of Neurology, The Chaim Sheba Medical Center, Ramat Gan 52626202, Israel
- Department of Neurology and Neurosurgery, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv 6997801, Israel
- The TELEM Rubin Excellence in Biomedical Research Program, The Chaim Sheba Medical Center, Ramat Gan 52626202, Israel
- Correspondence: ; Fax: +972-3530-4409
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7
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Vertiprakhov VG, Ovchinnikova NV. The activity of trypsin in the pancreatic juice and blood of poultry increases simultaneously in the postprandial period. Front Physiol 2022; 13:874664. [PMID: 36388123 PMCID: PMC9641294 DOI: 10.3389/fphys.2022.874664] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2022] [Accepted: 10/13/2022] [Indexed: 10/21/2023] Open
Abstract
Modern literature data indicate that the role of trypsin goes far beyond its digestive function. Once in the blood, trypsin is involved as part of the kallikrein-kinin system in the regulation of blood pressure, regulates pancreatic function by activating PAR receptors, and influences inflammation and immunity in the cell. The interaction of trypsin in the intestine and serum in the living healthy organism has been insufficiently studied. On the basis of our own studies and literature data, we concluded that after overnight fasting the increase of trypsin activity in pancreatic juice and blood serum in the postprandial period occurs in parallel, which determines not only digestion of food protein but also the level of metabolism. Consequently, determining the optimal amount of crude protein in the diet during the morning meal is a paramount task for physiologists.
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Affiliation(s)
| | - Natalya V. Ovchinnikova
- Timiryazev Russian State Agrarian University Moscow Agrarian Academy, Moscow, Russia
- Physiology of Motivation Laboratory, Anokhin Research Institute of Normal Physiology, Moscow, Russia
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8
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Koistinen H, Koistinen R, Hotakainen K, Lempiäinen A, Jokelainen K, Färkkilä M, Stenman UH. Immunoassay for trypsinogen-4. Anal Biochem 2022; 648:114681. [DOI: 10.1016/j.ab.2022.114681] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2022] [Revised: 03/30/2022] [Accepted: 04/01/2022] [Indexed: 11/01/2022]
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Physical Exercise as a Modulator of Vascular Pathology and Thrombin Generation to Improve Outcomes After Traumatic Brain Injury. Mol Neurobiol 2021; 59:1124-1138. [PMID: 34846694 DOI: 10.1007/s12035-021-02639-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2021] [Accepted: 11/04/2021] [Indexed: 10/19/2022]
Abstract
Disruption of the blood-brain barrier and occurrence of coagulopathy after traumatic brain injury (TBI) have important implications for multiple secondary injury processes. Given the extent of post-traumatic changes in neuronal function, significant alterations in some targets, such thrombin (a protease that plays a physiological role in maintaining blood coagulation), play an important role in TBI-induced pathophysiology. Despite the magnitude of thrombin in synaptic plasticity being concentration-dependent, the mechanisms underlying TBI have not been fully elucidated. The understanding of this post-injury neurovascular dysregulation is essential to establish scientific-based rehabilitative strategies. One of these strategies may be supporting physical exercise, considering its relevance in reducing damage after a TBI. However, there are caveats to consider when interpreting the effect of physical exercise on neurovascular dysregulation after TBI. To complete this picture, this review will describe how the interactions established between blood-borne factors (such as thrombin) and physical exercise alter the TBI pathophysiology.
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Festoff BW, Dockendorff C. The Evolving Concept of Neuro-Thromboinflammation for Neurodegenerative Disorders and Neurotrauma: A Rationale for PAR1-Targeting Therapies. Biomolecules 2021; 11:1558. [PMID: 34827556 PMCID: PMC8615608 DOI: 10.3390/biom11111558] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2021] [Revised: 10/10/2021] [Accepted: 10/14/2021] [Indexed: 12/15/2022] Open
Abstract
Interest in the role of coagulation and fibrinolysis in the nervous system was active in several laboratories dating back before cloning of the functional thrombin receptor in 1991. As one of those, our attention was initially on thrombin and plasminogen activators in synapse formation and elimination in the neuromuscular system, with orientation towards diseases such as amyotrophic lateral sclerosis (ALS) and how clotting and fibrinolytic pathways fit into its pathogenesis. This perspective is on neuro-thromboinflammation, emphasizing this emerging concept from studies and reports over more than three decades. It underscores how it may lead to novel therapeutic approaches to treat the ravages of neurotrauma and neurodegenerative diseases, with a focus on PAR1, ALS, and parmodulins.
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Affiliation(s)
- Barry W. Festoff
- PHLOGISTIX LLC, Department of Neurology, University of Kansas Medical School, Kansas City, MO 64108, USA
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11
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Kalinowski A, Liliental J, Anker LA, Linkovski O, Culbertson C, Hall JN, Pattni R, Sabatti C, Noordsy D, Hallmayer JF, Mellins ED, Ballon JS, O'Hara R, Levinson DF, Urban AE. Increased activation product of complement 4 protein in plasma of individuals with schizophrenia. Transl Psychiatry 2021; 11:486. [PMID: 34552056 PMCID: PMC8458380 DOI: 10.1038/s41398-021-01583-5] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/28/2021] [Revised: 07/28/2021] [Accepted: 08/17/2021] [Indexed: 02/08/2023] Open
Abstract
Structural variation in the complement 4 gene (C4) confers genetic risk for schizophrenia. The variation includes numbers of the increased C4A copy number, which predicts increased C4A mRNA expression. C4-anaphylatoxin (C4-ana) is a C4 protein fragment released upon C4 protein activation that has the potential to change the blood-brain barrier (BBB). We hypothesized that elevated plasma levels of C4-ana occur in individuals with schizophrenia (iSCZ). Blood was collected from 15 iSCZ with illness duration < 5 years and from 14 healthy controls (HC). Plasma C4-ana was measured by radioimmunoassay. Other complement activation products C3-ana, C5-ana, and terminal complement complex (TCC) were also measured. Digital-droplet PCR was used to determine C4 gene structural variation state. Recombinant C4-ana was added to primary brain endothelial cells (BEC) and permeability was measured in vitro. C4-ana concentration was elevated in plasma from iSCZ compared to HC (mean = 654 ± 16 ng/mL, 557 ± 94 respectively, p = 0.01). The patients also carried more copies of the C4AL gene and demonstrated a positive correlation between plasma C4-ana concentrations and C4A gene copy number. Furthermore, C4-ana increased the permeability of a monolayer of BEC in vitro. Our findings are consistent with a specific role for C4A protein in schizophrenia and raise the possibility that its activation product, C4-ana, increases BBB permeability. Exploratory analyses suggest the novel hypothesis that the relationship between C4-ana levels and C4A gene copy number could also be altered in iSCZ, suggesting an interaction with unknown genetic and/or environmental risk factors.
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Affiliation(s)
- Agnieszka Kalinowski
- Department of Psychiatry and Behavioral Sciences, Stanford University School of Medicine, Stanford, CA, 94305, USA.
- Sierra Pacific Mental Illness Research Education and Clinical Center (MIRECC), VA Palo Alto Health Care System, Palo Alto, CA, USA.
| | - Joanna Liliental
- Translational Applications Service Center, Stanford University School of Medicine, Stanford, CA, 94305, USA
- Translational Research and Applied Medicine, Stanford University School of Medicine, Stanford, CA, 94305, USA
- Department of Medicine, Stanford University School of Medicine, Stanford, CA, 94305, USA
| | - Lauren A Anker
- Department of Psychiatry and Behavioral Sciences, Stanford University School of Medicine, Stanford, CA, 94305, USA
- Sierra Pacific Mental Illness Research Education and Clinical Center (MIRECC), VA Palo Alto Health Care System, Palo Alto, CA, USA
| | - Omer Linkovski
- Department of Psychiatry and Behavioral Sciences, Stanford University School of Medicine, Stanford, CA, 94305, USA
- Department of Psychology, Bar-Ilan University, Ramat-Gan, Israel
| | - Collin Culbertson
- Department of Neurology, Stanford University School of Medicine, Stanford, CA, 94305, USA
| | - Jacob N Hall
- Department of Neurology, Stanford University School of Medicine, Stanford, CA, 94305, USA
- The Neurology Center of Southern California, Temecula, CA, 92592, USA
| | - Reenal Pattni
- Department of Psychiatry and Behavioral Sciences, Stanford University School of Medicine, Stanford, CA, 94305, USA
- Department of Genetics, Stanford University School of Medicine, Stanford, CA, 94305, USA
| | - Chiara Sabatti
- Department of Biomedical Data Science and Statistics, Stanford University School of Medicine, Stanford, CA, 94305, USA
| | - Douglas Noordsy
- Department of Psychiatry and Behavioral Sciences, Stanford University School of Medicine, Stanford, CA, 94305, USA
| | - Joachim F Hallmayer
- Department of Psychiatry and Behavioral Sciences, Stanford University School of Medicine, Stanford, CA, 94305, USA
- Sierra Pacific Mental Illness Research Education and Clinical Center (MIRECC), VA Palo Alto Health Care System, Palo Alto, CA, USA
| | - Elizabeth D Mellins
- Department of Pediatrics, Stanford Program in Immunology, Stanford University School of Medicine, Stanford, CA, 94305, USA
| | - Jacob S Ballon
- Department of Psychiatry and Behavioral Sciences, Stanford University School of Medicine, Stanford, CA, 94305, USA
| | - Ruth O'Hara
- Department of Psychiatry and Behavioral Sciences, Stanford University School of Medicine, Stanford, CA, 94305, USA
- Sierra Pacific Mental Illness Research Education and Clinical Center (MIRECC), VA Palo Alto Health Care System, Palo Alto, CA, USA
| | - Douglas F Levinson
- Department of Psychiatry and Behavioral Sciences, Stanford University School of Medicine, Stanford, CA, 94305, USA
| | - Alexander E Urban
- Department of Psychiatry and Behavioral Sciences, Stanford University School of Medicine, Stanford, CA, 94305, USA.
- Department of Genetics, Stanford University School of Medicine, Stanford, CA, 94305, USA.
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12
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Inhibition of PAR-2 Attenuates Neuroinflammation and Improves Short-Term Neurocognitive Functions Via ERK1/2 Signaling Following Asphyxia-Induced Cardiac Arrest in Rats. Shock 2021; 54:539-547. [PMID: 32028357 DOI: 10.1097/shk.0000000000001516] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
OBJECTIVE Global cerebral ischemia-induced neuroinflammation causes neurofunctional impairment following cardiac arrest. Previous studies have demonstrated that the activation of protease-activated receptor-2 (PAR-2) contributes to neuroinflammation. In the present study, we aimed to determine the potential treatment effect of PAR-2 inhibition against neuroinflammation in the setting of asphyxial CA (ACA) in rats. METHODS A total of 116 adult, male Sprague-Dawley rats were randomly divided into Sham (n = 18) and ACA (n = 98) groups. Time course, short-term outcome, and mechanism studies were conducted. All drugs were delivered intranasally. The effect of PAR-2 inhibitor FSLLRY-NH2 on neurocognitive functions was assessed by neurologic deficit score, number of seizures, and T-maze test, while hippocampal neuronal degeneration was evaluated by Fluoro-Jade C staining after ACA. Western blotting was performed for the mechanism study at 24 h following ACA. Selective PAR-2 agonist (AC55541) and ERK1/2 inhibitor (PD98059) were used for intervention. RESULTS Inhibition of PAR-2 decreased neuroinflammation, reduced the number of degenerating hippocampal neurons and improved neurocognitive functions following ACA. PAR-2 activator alone exerted opposite effects to PAR-2 inhibitor. PAR-2 mediated the augmented brain levels of proinflammatory cytokines by promoting the phosphorylation of ERK1/2. CONCLUSIONS PAR-2 inhibition diminished neuroinflammation and thereby reduced hippocampal neuronal degeneration and neurocognitive impairment following ACA. This effect was at least partly mediated via the PAR-2/ERK1/2 signaling.
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Emerging Roles of Protease-Activated Receptors (PARs) in the Modulation of Synaptic Transmission and Plasticity. Int J Mol Sci 2021; 22:ijms22020869. [PMID: 33467143 PMCID: PMC7830300 DOI: 10.3390/ijms22020869] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2021] [Revised: 01/13/2021] [Accepted: 01/14/2021] [Indexed: 12/22/2022] Open
Abstract
Protease-activated receptors (PARs) are a class of G protein-coupled receptors (GPCRs) with a unique mechanism of activation, prompted by a proteolytic cleavage in their N-terminal domain that uncovers a tethered ligand, which binds and stimulates the same receptor. PARs subtypes (PAR1-4) have well-documented roles in coagulation, hemostasis, and inflammation, and have been deeply investigated for their function in cellular survival/degeneration, while their roles in the brain in physiological conditions remain less appreciated. Here, we describe PARs’ effects in the modulation of neurotransmission and synaptic plasticity. Available evidence, mainly concerning PAR1-mediated and PAR2-mediated regulation of glutamatergic and GABAergic transmission, supports that PARs are important modulators of synaptic efficacy and plasticity in normal conditions.
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Ye F, Garton HJL, Hua Y, Keep RF, Xi G. The Role of Thrombin in Brain Injury After Hemorrhagic and Ischemic Stroke. Transl Stroke Res 2020; 12:496-511. [PMID: 32989665 DOI: 10.1007/s12975-020-00855-4] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2020] [Revised: 09/22/2020] [Accepted: 09/23/2020] [Indexed: 02/06/2023]
Abstract
Thrombin is increased in the brain after hemorrhagic and ischemic stroke primarily due to the prothrombin entry from blood either with a hemorrhage or following blood-brain barrier disruption. Increasing evidence indicates that thrombin and its receptors (protease-activated receptors (PARs)) play a major role in brain pathology following ischemic and hemorrhagic stroke (including intracerebral, intraventricular, and subarachnoid hemorrhage). Thrombin and PARs affect brain injury via multiple mechanisms that can be detrimental or protective. The cleavage of prothrombin into thrombin is the key step of hemostasis and thrombosis which takes place in every stroke and subsequent brain injury. The extravascular effects and direct cellular interactions of thrombin are mediated by PARs (PAR-1, PAR-3, and PAR-4) and their downstream signaling in multiple brain cell types. Such effects include inducing blood-brain-barrier disruption, brain edema, neuroinflammation, and neuronal death, although low thrombin concentrations can promote cell survival. Also, thrombin directly links the coagulation system to the immune system by activating interleukin-1α. Such effects of thrombin can result in both short-term brain injury and long-term functional deficits, making extravascular thrombin an understudied therapeutic target for stroke. This review examines the role of thrombin and PARs in brain injury following hemorrhagic and ischemic stroke and the potential treatment strategies which are complicated by their role in both hemostasis and brain.
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Affiliation(s)
- Fenghui Ye
- Department of Neurosurgery, University of Michigan, R5018 Biomedical Science Research Building, 109 Zina Pitcher Place, Ann Arbor, MI, 48109-2200, USA
| | - Hugh J L Garton
- Department of Neurosurgery, University of Michigan, R5018 Biomedical Science Research Building, 109 Zina Pitcher Place, Ann Arbor, MI, 48109-2200, USA
| | - Ya Hua
- Department of Neurosurgery, University of Michigan, R5018 Biomedical Science Research Building, 109 Zina Pitcher Place, Ann Arbor, MI, 48109-2200, USA
| | - Richard F Keep
- Department of Neurosurgery, University of Michigan, R5018 Biomedical Science Research Building, 109 Zina Pitcher Place, Ann Arbor, MI, 48109-2200, USA
| | - Guohua Xi
- Department of Neurosurgery, University of Michigan, R5018 Biomedical Science Research Building, 109 Zina Pitcher Place, Ann Arbor, MI, 48109-2200, USA.
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15
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Price R, Ferrari E, Gardoni F, Mercuri NB, Ledonne A. Protease-activated receptor 1 (PAR1) inhibits synaptic NMDARs in mouse nigral dopaminergic neurons. Pharmacol Res 2020; 160:105185. [PMID: 32891865 DOI: 10.1016/j.phrs.2020.105185] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/24/2020] [Revised: 08/22/2020] [Accepted: 08/26/2020] [Indexed: 12/17/2022]
Abstract
Protease-activated receptor 1 (PAR1) is a G protein-coupled receptor (GPCR), whose activation requires a proteolytic cleavage in the extracellular domain exposing a tethered ligand, which binds to the same receptor thus stimulating Gαq/11-, Gαi/o- and Gα12-13 proteins. PAR1, activated by serine proteases and matrix metalloproteases, plays multifaceted roles in neuroinflammation and neurodegeneration, in stroke, brain trauma, Alzheimer's diseases, and Parkinson's disease (PD). Substantia nigra pars compacta (SNpc) is among areas with highest PAR1 expression, but current evidence on its roles herein is restricted to mechanisms controlling dopaminergic (DAergic) neurons survival, with controversial data showing PAR1 either fostering or counteracting degeneration in PD models. Since PAR1 functions on SNpc DAergic neurons activity are unknown, we investigated if PAR1 affects glutamatergic transmission in this neuronal population. We analyzed PAR1's effects on NMDARs and AMPARs by patch-clamp recordings from DAergic neurons from mouse midbrain slices. Then, we explored subunit composition of PAR1-sensitive NMDARs, with selective antagonists, and mechanisms underlying PAR1-induced NMDARs modulation, by quantifying NMDARs surface expression. PAR1 activation inhibits synaptic NMDARs in SNpc DAergic neurons, without affecting AMPARs. PAR1-sensitive NMDARs contain GluN2B/GluN2D subunits. Moreover, PAR1-mediated NMDARs hypofunction is reliant on NMDARs internalization, as PAR1 stimulation increases NMDARs intracellular levels and pharmacological limitation of NMDARs endocytosis prevents PAR1-induced NMDARs inhibition. We reveal that PAR1 regulates glutamatergic transmission in midbrain DAergic cells. This might have implications in brain's DA-dependent functions and in neurological/psychiatric diseases linked to DAergic dysfunctions.
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Affiliation(s)
- Rachel Price
- Department of Experimental Neuroscience, IRCCS Fondazione Santa Lucia, Rome, Italy; Department of Systems Medicine, Università di Roma Tor Vergata, Rome, Italy
| | - Elena Ferrari
- Department of Pharmacological and Biomolecolar Sciences, Università degli Studi di Milano, Milan, Italy
| | - Fabrizio Gardoni
- Department of Pharmacological and Biomolecolar Sciences, Università degli Studi di Milano, Milan, Italy
| | - Nicola Biagio Mercuri
- Department of Experimental Neuroscience, IRCCS Fondazione Santa Lucia, Rome, Italy; Department of Systems Medicine, Università di Roma Tor Vergata, Rome, Italy
| | - Ada Ledonne
- Department of Experimental Neuroscience, IRCCS Fondazione Santa Lucia, Rome, Italy.
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16
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Comparative Transcriptomics Reveals Gene Families Associated with Predatory Behavior in Photuris femme fatale Fireflies. Genes (Basel) 2020; 11:genes11060627. [PMID: 32517321 PMCID: PMC7348864 DOI: 10.3390/genes11060627] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2020] [Revised: 06/03/2020] [Accepted: 06/05/2020] [Indexed: 12/12/2022] Open
Abstract
Identifying the basis of phenotypic variation is a key objective of genetics. This work has been mostly limited to model systems with a plethora of genetic manipulation and functional characterization tools. With the development of high-throughput sequencing and new computational tools, it is possible to identify candidate genes related to phenotypic variation in non-model organisms. Fireflies are excellent for studying phenotypic variation because of their diverse and well-characterized behaviors. Most adult fireflies emit a single mating flash pattern and do not eat. In contrast, adult females of many species in the genus Photuris employ multiple flash patterns and prey upon mate-seeking males of other firefly species. To investigate the genetic basis for this variation, we used comparative transcriptomics to identify positively selected genes between a predatory firefly, Photuris sp., and a non-predatory relative, Photuris frontalis, controlling for genes generally under selection in fireflies by comparing to a Photinus firefly. Nine gene families were identified under positive selection in the predatory versus non-predatory Photuris comparison, including genes involved in digestion, detoxification, vision, reproduction, and neural processes. These results generate intriguing hypotheses about the genetic basis for insect behavior and highlight the utility of comparative transcriptomic tools to investigate complex behaviors in non-model systems.
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17
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Ocak U, Eser Ocak P, Huang L, Xu W, Zuo Y, Li P, Gamdzyk M, Zuo G, Mo J, Zhang G, Zhang JH. Inhibition of mast cell tryptase attenuates neuroinflammation via PAR-2/p38/NFκB pathway following asphyxial cardiac arrest in rats. J Neuroinflammation 2020; 17:144. [PMID: 32366312 PMCID: PMC7199326 DOI: 10.1186/s12974-020-01808-2] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2019] [Accepted: 04/08/2020] [Indexed: 02/07/2023] Open
Abstract
Background Cardiac arrest survivors suffer from neurological dysfunction including cognitive impairment. Cerebral mast cells, the key regulators of neuroinflammation contribute to neuroinflammation-associated cognitive dysfunction. Mast cell tryptase was demonstrated to have a proinflammatory effect on microglia via the activation of microglial protease-activated receptor-2 (PAR-2). This study investigated the potential anti-neuroinflammatory effect of mast cell tryptase inhibition and the underlying mechanism of PAR-2/p-p38/NFκB signaling following asphyxia-induced cardiac arrest in rats. Methods Adult male Sprague-Dawley rats resuscitated from 10 min of asphyxia-induced cardiac arrest were randomized to four separate experiments including time-course, short-term outcomes, long-term outcomes and mechanism studies. The effect of mast cell tryptase inhibition on asphyxial cardiac arrest outcomes was examined after intranasal administration of selective mast cell tryptase inhibitor (APC366; 50 μg/rat or 150 μg/rat). AC55541 (selective PAR-2 activator; 30 μg/rat) and SB203580 (selective p38 inhibitor; 300 μg/rat) were used for intervention. Short-term neurocognitive functions were evaluated using the neurological deficit score, number of seizures, adhesive tape removal test, and T-maze test, while long-term cognitive functions were evaluated using the Morris water maze test. Hippocampal neuronal degeneration was evaluated by Fluoro-Jade C staining. Results Mast cell tryptase and PAR-2 were dramatically increased in the brain following asphyxia-induced cardiac arrest. The inhibition of mast cell tryptase by APC366 improved both short- and long-term neurological outcomes in resuscitated rats. Such behavioral benefits were associated with reduced expressions of PAR-2, p-p38, NFκB, TNF-α, and IL-6 in the brain as well as less hippocampal neuronal degeneration. The anti-neuroinflammatory effect of APC366 was abolished by AC55541, which when used alone, indeed further exacerbated neuroinflammation, hippocampal neuronal degeneration, and neurologic deficits following cardiac arrest. The deleterious effects aggregated by AC55541 were minimized by p38 inhibitor. Conclusions The inhibition of mast cell tryptase attenuated neuroinflammation, led to less hippocampal neuronal death and improved neurological deficits following cardiac arrest. This effect was at least partly mediated via inhibiting the PAR-2/p-p38/NFκB signaling pathway. Thus, mast cell tryptase might be a novel therapeutic target in the management of neurological impairment following cardiac arrest.
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Affiliation(s)
- Umut Ocak
- Department of Physiology and Pharmacology, Loma Linda University School of Medicine, Loma Linda, CA, 92350, USA.,Department of Emergency Medicine, Bursa Yuksek Ihtisas Training and Research Hospital, University of Health Sciences, 16310, Bursa, Turkey.,Department of Emergency Medicine, Bursa City Hospital, 16110, Bursa, Turkey
| | - Pinar Eser Ocak
- Department of Physiology and Pharmacology, Loma Linda University School of Medicine, Loma Linda, CA, 92350, USA.,Department of Neurosurgery, Uludag University School of Medicine, 16069, Bursa, Turkey
| | - Lei Huang
- Department of Physiology and Pharmacology, Loma Linda University School of Medicine, Loma Linda, CA, 92350, USA.,Department of Neurosurgery, Loma Linda University School of Medicine, Loma Linda, CA, 92350, USA
| | - Weilin Xu
- Department of Physiology and Pharmacology, Loma Linda University School of Medicine, Loma Linda, CA, 92350, USA.,Department of Neurosurgery, The Second Affiliated Hospital, Zhejiang University School of Medicine, Zhejiang, 310009, Hangzhou, China
| | - Yuchun Zuo
- Department of Physiology and Pharmacology, Loma Linda University School of Medicine, Loma Linda, CA, 92350, USA.,Department of Neurosurgery, The Third Xiangya Hospital, Central South University, Changsha, 410013, Hunan, China
| | - Peng Li
- Department of Physiology and Pharmacology, Loma Linda University School of Medicine, Loma Linda, CA, 92350, USA
| | - Marcin Gamdzyk
- Department of Physiology and Pharmacology, Loma Linda University School of Medicine, Loma Linda, CA, 92350, USA
| | - Gang Zuo
- Department of Physiology and Pharmacology, Loma Linda University School of Medicine, Loma Linda, CA, 92350, USA.,Department of Neurosurgery, The Affiliated Taicang Hospital, Soochow University, Suzhou, Taicang, 215400, Jiangsu, China
| | - Jun Mo
- Department of Physiology and Pharmacology, Loma Linda University School of Medicine, Loma Linda, CA, 92350, USA.,Department of Neurosurgery, The Fourth Affiliated Hospital, Zhejiang University School of Medicine, Yiwu, Zhejiang, 322000, China
| | - Guangyu Zhang
- Mass Spectrometry Core Facility, Loma Linda University School of Medicine, Loma Linda, CA, 92350, USA
| | - John H Zhang
- Department of Physiology and Pharmacology, Loma Linda University School of Medicine, Loma Linda, CA, 92350, USA. .,Department of Neurosurgery, Loma Linda University School of Medicine, Loma Linda, CA, 92350, USA. .,Department of Anesthesiology, Loma Linda University School of Medicine, Loma Linda, CA, 92350, USA. .,Department of Neurology, Loma Linda University School of Medicine, Loma Linda, CA, 92350, USA.
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18
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Weisheng-Tang Ameliorates Acute Ischemic Brain Damage in Mice by Maintaining Blood-Brain Barrier Integrity. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2019; 2019:4379732. [PMID: 31885791 PMCID: PMC6914926 DOI: 10.1155/2019/4379732] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/06/2019] [Accepted: 11/11/2019] [Indexed: 01/24/2023]
Abstract
Stroke is one of the major causes of death and long-term disability worldwide; the associated breakdown of the blood-brain barrier (BBB) aggravates ischemic brain damage. Accordingly, many medicinal herbs and formulas have been used to treat stroke-related symptoms. In this study, we selected two Korean herbal medicine formulas, Weisheng-tang and Tongxuewan, through Dongeuibogam text-mining analysis, and evaluated their protective effect on BBB disruption and brain damage in stroke. Ischemic brain damage was induced in mice by photothrombotic cortical ischemia. The infarct volume, brain edema, neurological deficits, and motor function 24 h after ischemic injury were analyzed. We investigated BBB breakdown by measuring Evans blue extravasation in addition to endothelial cells, tight junction proteins, protease-activated receptor-1 (PAR-1), and matrix metalloproteinase-9 (MMP-9) using immunofluorescence staining and confocal microscopy. Pretreatment with Weisheng-tang significantly reduced infarct volume and edema and improved neurological and motor functions; however, Tongxuewan did not. In addition, Weisheng-tang decreased brain infarction and edema and recovered neurological and motor deficit in a dose-dependent manner (30, 100, and 300 mg/kg). Weisheng-tang pretreatment resulted in significantly less BBB damage and higher brain microvasculature after focal cerebral ischemia. Tight junction proteins, such as zonula occludens-1 (ZO-1) and claudin-5, were preserved in Weisheng-tang-pretreated mice. Moreover, the ischemic brain in these mice showed suppressed PAR-1 and MMP-9 expression. In conclusion, our findings show that Weisheng-tang, which was selected through literature analysis but has not previously been used as a stroke remedy, exerts protective effects against ischemic brain damage and suggest its possible application for potential stroke patients, especially in the elderly.
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19
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Kempuraj D, Selvakumar GP, Thangavel R, Ahmed ME, Zaheer S, Kumar KK, Yelam A, Kaur H, Dubova I, Raikwar SP, Iyer SS, Zaheer A. Glia Maturation Factor and Mast Cell-Dependent Expression of Inflammatory Mediators and Proteinase Activated Receptor-2 in Neuroinflammation. J Alzheimers Dis 2019; 66:1117-1129. [PMID: 30372685 DOI: 10.3233/jad-180786] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Parkinson's disease (PD) is characterized by the presence of inflammation-mediated dopaminergic neurodegeneration in the substantia nigra. Inflammatory mediators from activated microglia, astrocytes, neurons, T-cells and mast cells mediate neuroinflammation and neurodegeneration. Administration of neurotoxin 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP)-induces PD like motor deficits in rodents. 1-methyl-4-phenylpyridinium (MPP+), a toxic metabolite of MPTP activates glial cells, neurons and mast cells to release neuroinflammatory mediators. Glia maturation factor (GMF), mast cells and proteinase activated receptor-2 (PAR-2) are implicated in neuroinflammation. Alpha-synuclein which induces neurodegeneration increases PAR-2 expression in the brain. However, the exact mechanisms are not yet understood. In this study, we quantified inflammatory mediators in the brains of MPTP-administered wild type (Wt), GMF-knockout (GMF-KO), and mast cell knockout (MC-KO) mice. Additionally, we analyzed the effect of MPP+, GMF, and mast cell proteases on PAR-2 expression in astrocytes and neurons in vitro. Results show that the levels of interleukin-1beta (IL-1β), tumor necrosis factor-alpha (TNF-α), and the chemokine (C-C motif) ligand 2 (CCL2) were lesser in the brains of GMF-KO mice and MC-KO mice when compared to Wt mice brain after MPTP administration. Incubation of astrocytes and neurons with MPP+, GMF, and mouse mast cell protease-6 (MMCP-6) and MMCP-7 increased the expression of PAR-2. Our studies show that the absence of mast cells and GMF reduce the expression of neuroinflammatory mediators in the brain. We conclude that GMF along with mast cell interactions with glial cells and neurons during neuroinflammation can be explored as a new therapeutic target for PD and other neuroinflammatory disorders.
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Affiliation(s)
- Duraisamy Kempuraj
- Harry S. Truman Memorial Veterans Hospital, U.S. Department of Veterans Affairs, Columbia, MO, USA.,Department of Neurology, and the Center for Translational Neuroscience, School of Medicine, University of Missouri, Columbia, MO, USA
| | - Govindhasamy Pushpavathi Selvakumar
- Harry S. Truman Memorial Veterans Hospital, U.S. Department of Veterans Affairs, Columbia, MO, USA.,Department of Neurology, and the Center for Translational Neuroscience, School of Medicine, University of Missouri, Columbia, MO, USA
| | - Ramasamy Thangavel
- Harry S. Truman Memorial Veterans Hospital, U.S. Department of Veterans Affairs, Columbia, MO, USA.,Department of Neurology, and the Center for Translational Neuroscience, School of Medicine, University of Missouri, Columbia, MO, USA
| | - Mohammad Ejaz Ahmed
- Harry S. Truman Memorial Veterans Hospital, U.S. Department of Veterans Affairs, Columbia, MO, USA.,Department of Neurology, and the Center for Translational Neuroscience, School of Medicine, University of Missouri, Columbia, MO, USA
| | - Smita Zaheer
- Department of Neurology, and the Center for Translational Neuroscience, School of Medicine, University of Missouri, Columbia, MO, USA
| | - Keerthana Kuppamma Kumar
- Department of Neurology, and the Center for Translational Neuroscience, School of Medicine, University of Missouri, Columbia, MO, USA
| | - Anudeep Yelam
- Department of Neurology, and the Center for Translational Neuroscience, School of Medicine, University of Missouri, Columbia, MO, USA
| | - Harleen Kaur
- Department of Neurology, and the Center for Translational Neuroscience, School of Medicine, University of Missouri, Columbia, MO, USA
| | - Iuliia Dubova
- Department of Neurology, and the Center for Translational Neuroscience, School of Medicine, University of Missouri, Columbia, MO, USA
| | - Sudhanshu P Raikwar
- Harry S. Truman Memorial Veterans Hospital, U.S. Department of Veterans Affairs, Columbia, MO, USA.,Department of Neurology, and the Center for Translational Neuroscience, School of Medicine, University of Missouri, Columbia, MO, USA
| | - Shankar S Iyer
- Harry S. Truman Memorial Veterans Hospital, U.S. Department of Veterans Affairs, Columbia, MO, USA.,Department of Neurology, and the Center for Translational Neuroscience, School of Medicine, University of Missouri, Columbia, MO, USA
| | - Asgar Zaheer
- Harry S. Truman Memorial Veterans Hospital, U.S. Department of Veterans Affairs, Columbia, MO, USA.,Department of Neurology, and the Center for Translational Neuroscience, School of Medicine, University of Missouri, Columbia, MO, USA
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20
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Lenz M, Shimon MB, Benninger F, Neufeld MY, Shavit-Stein E, Vlachos A, Maggio N. Systemic thrombin inhibition ameliorates seizures in a mouse model of pilocarpine-induced status epilepticus. J Mol Med (Berl) 2019; 97:1567-1574. [PMID: 31667526 DOI: 10.1007/s00109-019-01837-2] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2019] [Revised: 09/10/2019] [Accepted: 09/20/2019] [Indexed: 10/25/2022]
Abstract
Status epilepticus (SE) is a life-threatening condition characterized by ongoing seizure activity which can lead to severe brain damage and death if not treated properly. Recent work suggests that alterations in blood-brain barrier (BBB) function and subsequent cortical exposure to coagulation factors may initiate, promote, and/or sustain SE. This suggestion is based on the observation that the serine protease thrombin, which plays a fundamental role in the blood coagulation cascade, increases neural excitability through the activation of protease-activated receptor 1 (PAR1). However, it remains unclear whether systemic inhibition of thrombin asserts "anti-epileptic" effects in vivo. We here used the pilocarpine model of SE in adult 3-month-old male mice to address the question whether intraperitoneal injection of the thrombin inhibitor α-NAPAP (0.75 mg/kg) counters SE. Indeed, pharmacological inhibition of thrombin ameliorates the behavioral outcome of pilocarpine-induced SE. Similar results are obtained when the thrombin receptor PAR1 is pharmacologically blocked using intraperitoneal injection of SCH79797 (25 μg/kg) prior to SE induction. Consistent with these results, an increase in thrombin immunofluorescence is detected in the hippocampus of pilocarpine-treated animals. Moreover, increased hippocampal serine protease activity is detected 90 min after SE induction, which is not observed in animals treated with α-NAPAP prior to SE induction. Together, these results corroborate and extend recent studies suggesting that novel oral anticoagulants which target thrombin (and PAR1) may assert anti-epileptic effects in vivo. KEY MESSAGES: Systemic thrombin/PAR1-inhibition ameliorates anticoagulants behavioral seizures. Status epilepticus increases thrombin levels in the hippocampus. Increased serine protease activity in the hippocampus after status epileptic. Anti-epileptic potential of clinically used anticoagulants must be evaluated.
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Affiliation(s)
- Maximilian Lenz
- Department of Neuroanatomy, Institute of Anatomy and Cell Biology, Faculty of Medicine, University of Freiburg, Freiburg im Breisgau, Germany
| | - Marina Ben Shimon
- Department of Neurology, The Chaim Sheba Medical Center, Tel HaShomer, Israel.,Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Felix Benninger
- Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel.,Department of Neurology, Rabin Medical Center, Beilinson Hospital, Petah Tikva, Israel.,Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Miri Y Neufeld
- Department of Neurology, The Chaim Sheba Medical Center, Tel HaShomer, Israel.,Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Efrat Shavit-Stein
- Department of Neurology, The Chaim Sheba Medical Center, Tel HaShomer, Israel.,Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Andreas Vlachos
- Department of Neuroanatomy, Institute of Anatomy and Cell Biology, Faculty of Medicine, University of Freiburg, Freiburg im Breisgau, Germany. .,Center for Basics in Neuromodulation (NeuroModulBasics), Faculty of Medicine, University of Freiburg, Freiburg im Breisgau, Germany.
| | - Nicola Maggio
- Department of Neurology, The Chaim Sheba Medical Center, Tel HaShomer, Israel. .,Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel. .,Talpiot Medical Leadership Program, The Chaim Sheba Medical Center, Tel HaShomer, Israel. .,Department of Neurology, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel. .,Sagol School of Neuroscience, Tel Aviv University, Tel Aviv, Israel.
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21
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Puech C, Delavenne X, He Z, Forest V, Mismetti P, Perek N. Direct oral anticoagulants are associated with limited damage of endothelial cells of the blood-brain barrier mediated by the thrombin/PAR-1 pathway. Brain Res 2019; 1719:57-63. [DOI: 10.1016/j.brainres.2019.05.024] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2019] [Revised: 04/26/2019] [Accepted: 05/19/2019] [Indexed: 12/01/2022]
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22
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Li ZH, Cui D, Qiu CJ, Song XJ. Cyclic nucleotide signaling in sensory neuron hyperexcitability and chronic pain after nerve injury. NEUROBIOLOGY OF PAIN 2019; 6:100028. [PMID: 31223142 PMCID: PMC6565612 DOI: 10.1016/j.ynpai.2019.100028] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/14/2018] [Revised: 03/06/2019] [Accepted: 03/07/2019] [Indexed: 11/08/2022]
Abstract
Activation of cAMP-PKA and cGMP-PKG pathways contributes to injury-induced sensory neuron hyperexcitability. Activation of cAMP and cGMP contributes to the development of bone cancer pain. PAR2 activation mediates injury-induced cAMP-dependent sensory neuron hyperexcitability.
The cyclic nucleotide signaling, including cAMP-PKA and cGMP-PKG pathways, has been well known to play critical roles in regulating cellular growth, metabolism and many other intracellular processes. In recent years, more and more studies have uncovered the roles of cAMP and cGMP in the nervous system. The cAMP and cGMP signaling mediates chronic pain induced by different forms of injury and stress. Here we summarize the roles of cAMP-PKA and cGMP-PKG signaling pathways in the pathogenesis of chronic pain after nerve injury. In addition, acute dissociation and chronic compression of the dorsal root ganglion (DRG) neurons, respectively, leads to neural hyperexcitability possibly through PAR2 activation-dependent activation of cAMP-PKA pathway. Clinically, radiotherapy can effectively alleviate bone cancer pain at least partly through inhibiting the cancer cell-induced activation of cAMP-PKA pathway. Roles of cyclic nucleotide signaling in neuropathic and inflammatory pain are also seen in many other animal models and are involved in many pro-nociceptive mechanisms including the activation of hyperpolarization-activated cyclic nucleotide (HCN)-modulated ion channels and the exchange proteins directly activated by cAMP (EPAC). Further understanding the roles of cAMP and cGMP signaling in the pathogenesis of chronic pain is theoretically significant and clinically valuable for treatment of chronic pain.
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Affiliation(s)
- Ze-Hua Li
- Department of Biology, SUSTech Center for Pain Medicine, and Medical School, Southern University of Science and Technology, Shenzhen, Guangdong 518055, China.,Department of Anesthesiology and Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education of China), Peking University School of Oncology, Beijing Cancer Hospital & Institute, Beijing 100142, China
| | - Dong Cui
- Department of Biology, SUSTech Center for Pain Medicine, and Medical School, Southern University of Science and Technology, Shenzhen, Guangdong 518055, China.,Department of Anesthesiology and Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education of China), Peking University School of Oncology, Beijing Cancer Hospital & Institute, Beijing 100142, China
| | - Cheng-Jie Qiu
- Department of Biology, SUSTech Center for Pain Medicine, and Medical School, Southern University of Science and Technology, Shenzhen, Guangdong 518055, China
| | - Xue-Jun Song
- Department of Biology, SUSTech Center for Pain Medicine, and Medical School, Southern University of Science and Technology, Shenzhen, Guangdong 518055, China.,Department of Anesthesiology and Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education of China), Peking University School of Oncology, Beijing Cancer Hospital & Institute, Beijing 100142, China
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Klebe D, McBride D, Krafft PR, Flores JJ, Tang J, Zhang JH. Posthemorrhagic hydrocephalus development after germinal matrix hemorrhage: Established mechanisms and proposed pathways. J Neurosci Res 2019; 98:105-120. [PMID: 30793349 DOI: 10.1002/jnr.24394] [Citation(s) in RCA: 41] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2018] [Revised: 12/05/2018] [Accepted: 01/14/2019] [Indexed: 01/17/2023]
Abstract
In addition to being the leading cause of morbidity and mortality in premature infants, germinal matrix hemorrhage (GMH) is also the leading cause of acquired infantile hydrocephalus. The pathophysiology of posthemorrhagic hydrocephalus (PHH) development after GMH is complex and vaguely understood, although evidence suggests fibrosis and gliosis in the periventricular and subarachnoid spaces disrupts normal cerebrospinal fluid (CSF) dynamics. Theories explaining general hydrocephalus etiology have substantially evolved from the original bulk flow theory developed by Dr. Dandy over a century ago. Current clinical and experimental evidence supports a new hydrodynamic theory for hydrocephalus development involving redistribution of vascular pulsations and disruption of Starling forces in the brain microcirculation. In this review, we discuss CSF flow dynamics, history and development of theoretical hydrocephalus pathophysiology, and GMH epidemiology and etiology as it relates to PHH development. We highlight known mechanisms and propose new avenues that will further elucidate GMH pathophysiology, specifically related to hydrocephalus.
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Affiliation(s)
- Damon Klebe
- Department of Physiology and Pharmacology, Loma Linda University School of Medicine, Loma Linda, California
| | - Devin McBride
- Department of Physiology and Pharmacology, Loma Linda University School of Medicine, Loma Linda, California
| | - Paul R Krafft
- Department of Physiology and Pharmacology, Loma Linda University School of Medicine, Loma Linda, California.,Department of Neurosurgery, Loma Linda University School of Medicine, Loma Linda, California
| | - Jerry J Flores
- Department of Physiology and Pharmacology, Loma Linda University School of Medicine, Loma Linda, California
| | - Jiping Tang
- Department of Physiology and Pharmacology, Loma Linda University School of Medicine, Loma Linda, California
| | - John H Zhang
- Department of Physiology and Pharmacology, Loma Linda University School of Medicine, Loma Linda, California.,Department of Anesthesiology and Neurosurgery, Loma Linda University School of Medicine, Loma Linda, California
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Podocalyxin is required for maintaining blood-brain barrier function during acute inflammation. Proc Natl Acad Sci U S A 2019; 116:4518-4527. [PMID: 30787191 DOI: 10.1073/pnas.1814766116] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
Abstract
Podocalyxin (Podxl) is broadly expressed on the luminal face of most blood vessels in adult vertebrates, yet its function on these cells is poorly defined. In the present study, we identified specific functions for Podxl in maintaining endothelial barrier function. Using electrical cell substrate impedance sensing and live imaging, we found that, in the absence of Podxl, human umbilical vein endothelial cells fail to form an efficient barrier when plated on several extracellular matrix substrates. In addition, these monolayers lack adherens junctions and focal adhesions and display a disorganized cortical actin cytoskeleton. Thus, Podxl has a key role in promoting the appropriate endothelial morphogenesis required to form functional barriers. This conclusion is further supported by analyses of mutant mice in which we conditionally deleted a floxed allele of Podxl in vascular endothelial cells (vECs) using Tie2Cre mice (Podxl ΔTie2Cre). Although we did not detect substantially altered permeability in naïve mice, systemic priming with lipopolysaccharide (LPS) selectively disrupted the blood-brain barrier (BBB) in Podxl ΔTie2Cre mice. To study the potential consequence of this BBB breach, we used a selective agonist (TFLLR-NH2) of the protease-activated receptor-1 (PAR-1), a thrombin receptor expressed by vECs, neuronal cells, and glial cells. In response to systemic administration of TFLLR-NH2, LPS-primed Podxl ΔTie2Cre mice become completely immobilized for a 5-min period, coinciding with severely dampened neuroelectric activity. We conclude that Podxl expression by CNS tissue vECs is essential for BBB maintenance under inflammatory conditions.
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Li TZ, Deng H, Liu Q, Xia YZ, Darwazeh R, Yan Y. Protease-activated receptor-2 regulates glial scar formation via JNK signaling. Physiol Res 2019; 68:305-316. [PMID: 30628825 DOI: 10.33549/physiolres.933908] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
The study aimed to determine the effects of protease-activated receptor-2 (PAR-2) on glial scar formation after spinal cord injury (SCI) in Sprague-Dawley (SD) rats and the underlying mechanisms. Rivlin and Tator's acute extradural clip compression injury (CCI) model of severe SCI was established in this study. Animals were divided into four groups: 1) sham group (laminectomy only); 2) model group, treated with normal saline; 3) PAR-2 inhibitor group; 4) PAR-2 activator group. Enhanced GFAP and vimentin expression were the markers of glial scar formation. To determine whether JNK was involved in the effects of PAR-2 on GFAP and vimentin expression, we administered anisomycin (a JNK activator) in the presence of PAR-2 inhibitor and SP600125 (a JNK inhibitor) in the presence of PAR-2 activator. At 1, 7, 14 and 28 day after SCI, Basso, Beattie, and Bresnahan (BBB) locomotor score test was used to assess the locomotor functional recovery; immunofluorescence and western blot analysis were used to assess the expression level of GFAP, vimentin and p-JNK. Double immunofluorescence staining with GFAP and tubulin beta was used to assess the glial scar formation and the remaining neurons. Results suggested that PAR-2 is involved in glial scar formation and reduces neurons residues which can cause a further worsening in the functional outcomes after SCI via JNK signaling. Therefore, it may be effective to target PAR-2 in the treatment of SCI.
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Affiliation(s)
- Tian-Zun Li
- Department of Neurosurgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China.
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26
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Piao CS, Holloway AL, Hong-Routson S, Wainwright MS. Depression following traumatic brain injury in mice is associated with down-regulation of hippocampal astrocyte glutamate transporters by thrombin. J Cereb Blood Flow Metab 2019; 39:58-73. [PMID: 29135354 PMCID: PMC6311670 DOI: 10.1177/0271678x17742792] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Depression after traumatic brain injury (TBI) is common but the mechanisms by which TBI causes depression are unknown. TBI decreases glutamate transporters GLT-1 and GLAST and allows extravasation of thrombin. We examined the effects of thrombin on transporter expression in primary hippocampal astrocytes. Application of a PAR-1 agonist caused down-regulation of GLT-1, which was prevented by inhibition of Rho kinase (ROCK). To confirm these mechanisms in vivo, we subjected mice to closed-skull TBI. Thrombin activity in the hippocampus increased one day following TBI. Seven days following TBI, expression of GLT-1 and GLAST was reduced in the hippocampus, and this was prevented by administration of the PAR-1 antagonist SCH79797. Inhibition of ROCK attenuated the decrease in GLT-1, but not GLAST, after TBI. We measured changes in glutamate levels in the hippocampus seven days after TBI using an implanted biosensor. Stress-induced glutamate levels were significantly increased following TBI and this was attenuated by treatment with the ROCK inhibitor fasudil. We quantified depressive behavior following TBI and found that inhibition of PAR-1 or ROCK decreased these behaviors. These results identify a novel mechanism by which TBI results in down-regulation of astrocyte glutamate transporters and implicate astrocyte and glutamate transporter dysfunction in depression following TBI.
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Affiliation(s)
- Chun-Shu Piao
- 1 Ruth D. & Ken M. Davee Pediatric Neurocritical Care Program, Northwestern University Feinberg School of Medicine, Chicago, IL, USA.,2 Division of Neurology, Ann & Robert H Lurie Children's Hospital of Chicago, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
| | - Ashley L Holloway
- 1 Ruth D. & Ken M. Davee Pediatric Neurocritical Care Program, Northwestern University Feinberg School of Medicine, Chicago, IL, USA.,2 Division of Neurology, Ann & Robert H Lurie Children's Hospital of Chicago, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
| | - Sue Hong-Routson
- 1 Ruth D. & Ken M. Davee Pediatric Neurocritical Care Program, Northwestern University Feinberg School of Medicine, Chicago, IL, USA.,2 Division of Neurology, Ann & Robert H Lurie Children's Hospital of Chicago, Northwestern University Feinberg School of Medicine, Chicago, IL, USA.,3 Division of Critical Care, Ann & Robert H. Lurie Children's Hospital of Chicago, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
| | - Mark S Wainwright
- 1 Ruth D. & Ken M. Davee Pediatric Neurocritical Care Program, Northwestern University Feinberg School of Medicine, Chicago, IL, USA.,2 Division of Neurology, Ann & Robert H Lurie Children's Hospital of Chicago, Northwestern University Feinberg School of Medicine, Chicago, IL, USA.,3 Division of Critical Care, Ann & Robert H. Lurie Children's Hospital of Chicago, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
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27
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Shavit-Stein E, Sheinberg E, Golderman V, Sharabi S, Wohl A, Gofrit SG, Zivli Z, Shelestovich N, Last D, Guez D, Daniels D, Gera O, Feingold K, Itsekson-Hayosh Z, Rosenberg N, Tamarin I, Dori A, Maggio N, Mardor Y, Chapman J, Harnof S. A Novel Compound Targeting Protease Receptor 1 Activators for the Treatment of Glioblastoma. Front Neurol 2018; 9:1087. [PMID: 30619047 PMCID: PMC6304418 DOI: 10.3389/fneur.2018.01087] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2018] [Accepted: 11/28/2018] [Indexed: 01/27/2023] Open
Abstract
Data from human biopsies, in-vitro and in-vivo models, strongly supports the role of thrombin, and its protease-activated receptor (PAR1) in the pathology and progression of glioblastoma (GBM), a high-grade glial tumor. Activation of PAR1 by thrombin stimulates vasogenic edema, tumor adhesion and tumor growth. We here present a novel six amino acid chloromethyl-ketone compound (SIXAC) which specifically inhibits PAR1 proteolytic activation and counteracts the over-activation of PAR1 by tumor generated thrombin. SIXAC effects were demonstrated in-vitro utilizing 3 cell-lines, including the highly malignant CNS-1 cell-line which was also used as a model for GBM in-vivo. The in-vitro effects of SIXAC on proliferation rate, invasion and thrombin activity were measured by XTT, wound healing, colony formation and fluorescent assays, respectively. The effect of SIXAC on GBM in-vivo was assessed by measuring tumor and edema size as quantified by MRI imaging, by survival follow-up and brain histopathology. SIXAC was found in-vitro to inhibit thrombin-activity generated by CNS-1 cells (IC50 = 5 × 10-11M) and significantly decrease proliferation rate (p < 0.03) invasion (p = 0.02) and colony formation (p = 0.03) of these cells. In the CNS-1 GBM rat animal model SIXAC was found to reduce edema volume ratio (8.8 ± 1.9 vs. 4.9 ± 1, p < 0.04) and increase median survival (16 vs. 18.5 days, p < 0.02 by Log rank Mental-Cox test). These results strengthen the important role of thrombin/PAR1 pathway in glioblastoma progression and suggest SIXAC as a novel therapeutic tool for this fatal disease.
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Affiliation(s)
- Efrat Shavit-Stein
- Department of Neurology and Joseph Sagol Neuroscience Center, Sheba Medical Center, Tel Hashomer, Sackler Faculty of Medicine, Tel Aviv University, Ramat Gan, Israel
| | - Ehud Sheinberg
- Department of Neurology and Joseph Sagol Neuroscience Center, Sheba Medical Center, Tel Hashomer, Sackler Faculty of Medicine, Tel Aviv University, Ramat Gan, Israel
- Department of Neurosurgery, Rabin Medical Center, Sackler Faculty of Medicine, Tel Aviv University, Ramat Gan, Israel
| | - Valery Golderman
- Department of Neurology and Joseph Sagol Neuroscience Center, Sheba Medical Center, Tel Hashomer, Sackler Faculty of Medicine, Tel Aviv University, Ramat Gan, Israel
| | - Shirley Sharabi
- The Advanced Technology Center, Sheba Medical Center, Tel Hashomer, Ramat Gan, Israel
| | - Anton Wohl
- Department of Neurosurgery, Sheba Medical Center, Tel Hashomer, Sackler Faculty of Medicine, Tel Aviv University, Ramat Gan, Israel
| | - Shany Guly Gofrit
- Department of Neurology and Joseph Sagol Neuroscience Center, Sheba Medical Center, Tel Hashomer, Sackler Faculty of Medicine, Tel Aviv University, Ramat Gan, Israel
| | - Zion Zivli
- Department of Neurosurgery, Sheba Medical Center, Tel Hashomer, Sackler Faculty of Medicine, Tel Aviv University, Ramat Gan, Israel
| | | | - David Last
- The Advanced Technology Center, Sheba Medical Center, Tel Hashomer, Ramat Gan, Israel
| | - David Guez
- The Advanced Technology Center, Sheba Medical Center, Tel Hashomer, Ramat Gan, Israel
| | - Dianne Daniels
- The Advanced Technology Center, Sheba Medical Center, Tel Hashomer, Ramat Gan, Israel
| | - Orna Gera
- Department of Neurology and Joseph Sagol Neuroscience Center, Sheba Medical Center, Tel Hashomer, Sackler Faculty of Medicine, Tel Aviv University, Ramat Gan, Israel
| | - Kate Feingold
- Department of Neurology and Joseph Sagol Neuroscience Center, Sheba Medical Center, Tel Hashomer, Sackler Faculty of Medicine, Tel Aviv University, Ramat Gan, Israel
| | - Zeev Itsekson-Hayosh
- Department of Neurology and Joseph Sagol Neuroscience Center, Sheba Medical Center, Tel Hashomer, Sackler Faculty of Medicine, Tel Aviv University, Ramat Gan, Israel
| | - Nurit Rosenberg
- Institute of Thrombosis and Heamostasis, Coagulation Laboratory, Sheba Medical Center, Tel Hashomer, Ramat Gan, Israel
| | - Ilia Tamarin
- Institute of Thrombosis and Heamostasis, Coagulation Laboratory, Sheba Medical Center, Tel Hashomer, Ramat Gan, Israel
| | - Amir Dori
- Department of Neurology and Joseph Sagol Neuroscience Center, Sheba Medical Center, Tel Hashomer, Sackler Faculty of Medicine, Tel Aviv University, Ramat Gan, Israel
| | - Nicola Maggio
- Department of Neurology and Joseph Sagol Neuroscience Center, Sheba Medical Center, Tel Hashomer, Sackler Faculty of Medicine, Tel Aviv University, Ramat Gan, Israel
| | - Yael Mardor
- The Advanced Technology Center, Sheba Medical Center, Tel Hashomer, Sackler Faculty of Medicine, Tel Aviv University, Ramat Gan, Israel
| | - Joab Chapman
- Department of Neurology and Joseph Sagol Neuroscience Center, Sheba Medical Center, Tel Hashomer, Sackler Faculty of Medicine, Tel Aviv University, Ramat Gan, Israel
- Robert and Martha Harden Chair in Mental and Neurological Diseases, Sackler Faculty of Medicine, Tel Aviv University, Ramat Gan, Israel
| | - Sagi Harnof
- Department of Neurosurgery, Rabin Medical Center, Sackler Faculty of Medicine, Tel Aviv University, Ramat Gan, Israel
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De Luca C, Colangelo AM, Alberghina L, Papa M. Neuro-Immune Hemostasis: Homeostasis and Diseases in the Central Nervous System. Front Cell Neurosci 2018; 12:459. [PMID: 30534057 PMCID: PMC6275309 DOI: 10.3389/fncel.2018.00459] [Citation(s) in RCA: 82] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2018] [Accepted: 11/12/2018] [Indexed: 01/08/2023] Open
Abstract
Coagulation and the immune system interact in several physiological and pathological conditions, including tissue repair, host defense, and homeostatic maintenance. This network plays a key role in diseases of the central nervous system (CNS) by involving several cells (CNS resident cells, platelets, endothelium, and leukocytes) and molecular pathways (protease activity, complement factors, platelet granule content). Endothelial damage prompts platelet activation and the coagulation cascade as the first physiological step to support the rescue of damaged tissues, a flawed rescuing system ultimately producing neuroinflammation. Leukocytes, platelets, and endothelial cells are sensitive to the damage and indeed can release or respond to chemokines and cytokines (platelet factor 4, CXCL4, TNF, interleukins), and growth factors (including platelet-derived growth factor, vascular endothelial growth factor, and brain-derived neurotrophic factor) with platelet activation, change in capillary permeability, migration or differentiation of leukocytes. Thrombin, plasmin, activated complement factors and matrix metalloproteinase-1 (MMP-1), furthermore, activate intracellular transduction through complement or protease-activated receptors. Impairment of the neuro-immune hemostasis network induces acute or chronic CNS pathologies related to the neurovascular unit, either directly or by the systemic activation of its main steps. Neurons, glial cells (astrocytes and microglia) and the extracellular matrix play a crucial function in a “tetrapartite” synaptic model. Taking into account the neurovascular unit, in this review we thoroughly analyzed the influence of neuro-immune hemostasis on these five elements acting as a functional unit (“pentapartite” synapse) in the adaptive and maladaptive plasticity and discuss the relevance of these events in inflammatory, cerebrovascular, Alzheimer, neoplastic and psychiatric diseases. Finally, based on the solid reviewed data, we hypothesize a model of neuro-immune hemostatic network based on protein–protein interactions. In addition, we propose that, to better understand and favor the maintenance of adaptive plasticity, it would be useful to construct predictive molecular models, able to enlighten the regulating logic of the complex molecular network, which belongs to different cellular domains. A modeling approach would help to define how nodes of the network interact with basic cellular functions, such as mitochondrial metabolism, autophagy or apoptosis. It is expected that dynamic systems biology models might help to elucidate the fine structure of molecular events generated by blood coagulation and neuro-immune responses in several CNS diseases, thereby opening the way to more effective treatments.
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Affiliation(s)
- Ciro De Luca
- Laboratory of Morphology of Neuronal Network, Department of Public Medicine, University of Campania-Luigi Vanvitelli, Naples, Italy
| | - Anna Maria Colangelo
- Laboratory of Neuroscience "R. Levi-Montalcini", Department of Biotechnology and Biosciences, University of Milano-Bicocca, Milan, Italy.,SYSBIO Centre of Systems Biology, University of Milano-Bicocca, Milan, Italy
| | - Lilia Alberghina
- Laboratory of Neuroscience "R. Levi-Montalcini", Department of Biotechnology and Biosciences, University of Milano-Bicocca, Milan, Italy.,SYSBIO Centre of Systems Biology, University of Milano-Bicocca, Milan, Italy
| | - Michele Papa
- Laboratory of Morphology of Neuronal Network, Department of Public Medicine, University of Campania-Luigi Vanvitelli, Naples, Italy.,SYSBIO Centre of Systems Biology, University of Milano-Bicocca, Milan, Italy
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Effect of tryptase on mouse brain microvascular endothelial cells via protease-activated receptor 2. J Neuroinflammation 2018; 15:248. [PMID: 30170602 PMCID: PMC6119285 DOI: 10.1186/s12974-018-1287-1] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2018] [Accepted: 08/21/2018] [Indexed: 12/12/2022] Open
Abstract
Background Mast cells (MCs), the ‘first responders’ in brain injury, are able to disrupt the blood–brain barrier (BBB), but the underlying mechanism is not well understood. Tryptase is the most abundant MC secretory product. Protease-activated receptor 2 (PAR-2) has been identified as a specific receptor for tryptase, which is abundantly expressed in brain microvascular endothelial cells. The BBB comprises brain microvascular endothelial cells that display specialised molecular properties essential for BBB function and integrity. Therefore, the purpose of the present study was to investigate the effects of tryptase on mouse brain microvascular endothelial cell line bEnd3 and its potential mechanisms of action. Methods Induction of mouse brain microvascular endothelial cell activation by tryptase was examined. Then, mouse brain microvascular endothelial cells were pretreated with a PAR-2 antagonist and stimulated with tryptase. Cellular activation, proinflammatory cytokine production, expression of PAR-2, Toll-like receptors (TLRs) and mitogen-activated protein kinases (MAPK), nuclear factor kappa B (NF-kappa B) phosphorylation were assessed. Results Tryptase upregulated the production of VCAM-1, MMPs (MMP9 and MMP2), TLR4 and TNF-α and downregulated the expression of the tight junction proteins occludin and claudin-5 in mouse brain microvascular endothelial cell. Among the MAPK and NF-kappa B pathway, ERK and NF-kappa B were activated by tryptase. All of these effects could be eliminated by the PAR-2 inhibitor. Conclusion Based on our findings, we conclude that tryptase can trigger brain microvascular endothelial cell activation and proinflammatory mediator release. These findings may further clarify the involvement and mechanism of tryptase in BBB disruption.
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Kim B, Kim HS. Novel peptide inhibits inflammation by suppressing of protease activated receptor-2. Eur J Pharmacol 2018; 832:25-32. [DOI: 10.1016/j.ejphar.2018.05.016] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2017] [Revised: 05/15/2018] [Accepted: 05/16/2018] [Indexed: 11/29/2022]
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Gaydukov AE, Akutin IA, Bogacheva PO, Balezina OP. Changes in the Parameters of Quantal Acetylcholine Release after Activation of PAR1-Type Thrombin Receptors at the Mouse Neuromuscular Junctions. BIOCHEMISTRY (MOSCOW), SUPPLEMENT SERIES A: MEMBRANE AND CELL BIOLOGY 2018. [DOI: 10.1134/s1990747818010063] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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32
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Liang W, Huang X, Chen W. The Effects of Baicalin and Baicalein on Cerebral Ischemia: A Review. Aging Dis 2017; 8:850-867. [PMID: 29344420 PMCID: PMC5758355 DOI: 10.14336/ad.2017.0829] [Citation(s) in RCA: 137] [Impact Index Per Article: 19.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2017] [Accepted: 08/29/2017] [Indexed: 12/12/2022] Open
Abstract
Ischemic stroke, producing a high mortality and morbidity rate, is a common clinical disease. Enhancing the prevention and control of ischemic stroke is particularly important. Baicalin and its aglycon baicalein are flavonoids extracted from Scutellaria baicalensis, an important traditional Chinese herb. In recent years, a growing body of evidences has shown that baicalin and baicalein could be effective in the treatment of cerebral ischemia. Pharmacokinetic studies have shown that baicalin could penetrate the blood-brain barrier and distribute in cerebral nuclei. Through a variety of in vitro and in vivo models of ischemic neuronal injury, numerous studies have demonstrated that baicalin and baicalein have salutary effect for neuroprotection. Especially, the studies on the pharmacological mechanism showed that baicalin and baicalein have several pharmacological activities, which include antioxidant, anti-apoptotic, anti-inflammatory and anti-excitotoxicity effects, protection of the mitochondria, promoting neuronal protective factors expression and adult neurogenesis effects and many more. This review focuses on the neuroprotective effects of baicalin and baicalein in ischemia or stroke-induced neuronal cell death. We aimed at collecting all important information regarding the neuroprotective effect and its pharmacological mechanism of baicalin and baicalein in various in vivo and in vitro experimental models of ischemic neuronal injury.
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Affiliation(s)
- Wei Liang
- Department of Traditional Chinese Medicine, Xuanwu Hospital, Capital Medical University, Beijing, 100053, China
| | - Xiaobo Huang
- Department of Traditional Chinese Medicine, Xuanwu Hospital, Capital Medical University, Beijing, 100053, China
| | - Wenqiang Chen
- Department of Traditional Chinese Medicine, Xuanwu Hospital, Capital Medical University, Beijing, 100053, ChinaThese authors equally contributed to this work
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Matthews D, Diskin MG, Kenny DA, Creevey CJ, Keogh K, Waters SM. Effect of short term diet restriction on gene expression in the bovine hypothalamus using next generation RNA sequencing technology. BMC Genomics 2017; 18:857. [PMID: 29121875 PMCID: PMC5680758 DOI: 10.1186/s12864-017-4265-6] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2017] [Accepted: 11/02/2017] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Negative energy balance (NEB) is an imbalance between energy intake and energy requirements for lactation and body maintenance affecting high-yielding dairy cows and is of considerable economic importance due to its negative impact on fertility and health in dairy herds. It is anticipated that the cow hypothalamus experiences extensive biochemical changes during the early post partum period in an effort to re-establish metabolic homeostasis. However, there is variation in the tolerance to NEB between individual cows. In order to understand the genomic regulation of ovulation in hypothalamic tissue during NEB, mRNA transcriptional patterns between tolerant and sensitive animals were examined. A short term dietary restriction heifer model was developed which induced abrupt onset of anoestrus in some animals (Restricted Anovulatory; RA) while others maintained oestrous cyclicity (Restricted Ovulatory; RO). A third control group (C) received a higher level of normal feeding. RESULTS A total of 15,295 genes were expressed in hypothalamic tissue. Between RA and C groups 137 genes were differentially expressed, whereas between RO and C, 32 genes were differentially expressed. Differentially expressed genes were involved in the immune response and cellular motility in RA and RO groups, respectively, compared to C group. The largest difference between groups was observed in the comparison between RA and RO heifers, with 1094 genes shown to be significantly differentially expressed (SDE). Pathway analysis showed that these SDE genes were associated with 6 canonical pathways (P < 0.01), of which neuroactive ligand-receptor interaction was the most significant. Within the comparisons the main over-represented pathway functions were immune response including neuroprotection (CXCL10, Q1KLR3, IFIH1, IL1 and IL8; RA v C and RA v RO); energy homeostasis (AgRP and NPY; RA v RO); cell motility (CADH1, DSP and TSP4; RO v C) and prevention of GnRH release (NTSR1 IL1α, IL1β, NPY and PACA; RA v RO). CONCLUSIONS This information will assist in understanding the genomic factors regulating the influence of diet restriction on fertility and may assist in optimising nutritional and management systems for the improvement in reproductive performance.
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Affiliation(s)
- Daragh Matthews
- Animal and Grassland Research and Innovation Centre, Teagasc, Mellows Campus, Athenry, Co. Galway, Ireland.,School of Agriculture and Food Science, University College Dublin, Belfield, Dublin 4, Ireland
| | - Michael G Diskin
- Animal and Grassland Research and Innovation Centre, Teagasc, Mellows Campus, Athenry, Co. Galway, Ireland
| | - David A Kenny
- Animal and Bioscience Research Department, Animal and Grassland Research and Innovation Centre, Teagasc, Grange, Dunsany, Co. Meath, Ireland
| | - Christopher J Creevey
- Animal and Bioscience Research Department, Animal and Grassland Research and Innovation Centre, Teagasc, Grange, Dunsany, Co. Meath, Ireland
| | - Kate Keogh
- Animal and Bioscience Research Department, Animal and Grassland Research and Innovation Centre, Teagasc, Grange, Dunsany, Co. Meath, Ireland
| | - Sinead M Waters
- Animal and Bioscience Research Department, Animal and Grassland Research and Innovation Centre, Teagasc, Grange, Dunsany, Co. Meath, Ireland.
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De Luca C, Virtuoso A, Maggio N, Papa M. Neuro-Coagulopathy: Blood Coagulation Factors in Central Nervous System Diseases. Int J Mol Sci 2017; 18:E2128. [PMID: 29023416 PMCID: PMC5666810 DOI: 10.3390/ijms18102128] [Citation(s) in RCA: 62] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2017] [Revised: 09/30/2017] [Accepted: 10/08/2017] [Indexed: 12/30/2022] Open
Abstract
Blood coagulation factors and other proteins, with modulatory effects or modulated by the coagulation cascade have been reported to affect the pathophysiology of the central nervous system (CNS). The protease-activated receptors (PARs) pathway can be considered the central hub of this regulatory network, mainly through thrombin or activated protein C (aPC). These proteins, in fact, showed peculiar properties, being able to interfere with synaptic homeostasis other than coagulation itself. These specific functions modulate neuronal networks, acting both on resident (neurons, astrocytes, and microglia) as well as circulating immune system cells and the extracellular matrix. The pleiotropy of these effects is produced through different receptors, expressed in various cell types, in a dose- and time-dependent pattern. We reviewed how these pathways may be involved in neurodegenerative diseases (amyotrophic lateral sclerosis, Alzheimer's and Parkinson's diseases), multiple sclerosis, ischemic stroke and post-ischemic epilepsy, CNS cancer, addiction, and mental health. These data open up a new path for the potential therapeutic use of the agonist/antagonist of these proteins in the management of several central nervous system diseases.
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Affiliation(s)
- Ciro De Luca
- Laboratory of Neuronal Networks, University of Campania "Luigi Vanvitelli", 80138 Naples, Italy.
| | - Assunta Virtuoso
- Laboratory of Neuronal Networks, University of Campania "Luigi Vanvitelli", 80138 Naples, Italy.
| | - Nicola Maggio
- Department of Neurology, The Chaim Sheba Medical Center, Tel Hashomer, 52621 Ramat Gan, Israel.
- Department of Neurology and Neurosurgery, Sackler Faculty of Medicine and Sagol School of Neuroscience, Tel Aviv University, 6997801 Tel Aviv, Israel.
| | - Michele Papa
- Laboratory of Neuronal Networks, University of Campania "Luigi Vanvitelli", 80138 Naples, Italy.
- SYSBIO, Centre of Systems Biology, University of Milano-Bicocca, 20126 Milano, Italy.
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Readmond C, Wu C. Investigating detailed interactions between novel PAR1 antagonist F16357 and the receptor using docking and molecular dynamic simulations. J Mol Graph Model 2017; 77:205-217. [DOI: 10.1016/j.jmgm.2017.08.019] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2017] [Revised: 08/18/2017] [Accepted: 08/21/2017] [Indexed: 01/08/2023]
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Klebe D, Flores JJ, McBride DW, Krafft PR, Rolland WB, Lekic T, Zhang JH. Dabigatran ameliorates post-haemorrhagic hydrocephalus development after germinal matrix haemorrhage in neonatal rat pups. J Cereb Blood Flow Metab 2017; 37:3135-3149. [PMID: 28155585 PMCID: PMC5584693 DOI: 10.1177/0271678x16684355] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
We aim to determine if direct thrombin inhibition by dabigatran will improve long-term brain morphological and neurofunctional outcomes and if potential therapeutic effects are dependent upon reduced PAR-1 stimulation and consequent mTOR activation. Germinal matrix haemorrhage was induced by stereotaxically injecting 0.3 U type VII-S collagenase into the germinal matrix of P7 rat pups. Animals were divided into five groups: sham, vehicle (5% DMSO), dabigatran intraperitoneal, dabigatran intraperitoneal + TFLLR-NH2 (PAR-1 agonist) intranasal, SCH79797 (PAR-1 antagonist) intraperitoneal, and dabigatran intranasal. Neurofunctional outcomes were determined by Morris water maze, rotarod, and foot fault evaluations at three weeks. Brain morphological outcomes were determined by histological Nissl staining at four weeks. Expression levels of p-mTOR/p-p70s6k at three days and vitronectin/fibronectin at 28 days were quantified. Intranasal and intraperitoneal dabigatran promoted long-term neurofunctional recovery, improved brain morphological outcomes, and reduced intracranial pressure at four weeks after GMH. PAR-1 stimulation tended to reverse dabigatran's effects on post-haemorrhagic hydrocephalus development. Dabigatran also reduced expression of short-term p-mTOR and long-term extracellular matrix proteins, which tended to be reversed by PAR-1 agonist co-administration. PAR-1 inhibition alone, however, did not achieve the same therapeutic effects as dabigatran administration.
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Affiliation(s)
- Damon Klebe
- 1 Department of Physiology and Pharmacology, Loma Linda University School of Medicine, Loma Linda, CA, USA
| | - Jerry J Flores
- 1 Department of Physiology and Pharmacology, Loma Linda University School of Medicine, Loma Linda, CA, USA
| | - Devin W McBride
- 1 Department of Physiology and Pharmacology, Loma Linda University School of Medicine, Loma Linda, CA, USA
| | - Paul R Krafft
- 1 Department of Physiology and Pharmacology, Loma Linda University School of Medicine, Loma Linda, CA, USA
| | - William B Rolland
- 1 Department of Physiology and Pharmacology, Loma Linda University School of Medicine, Loma Linda, CA, USA
| | - Tim Lekic
- 1 Department of Physiology and Pharmacology, Loma Linda University School of Medicine, Loma Linda, CA, USA
| | - John H Zhang
- 1 Department of Physiology and Pharmacology, Loma Linda University School of Medicine, Loma Linda, CA, USA.,2 Department of Anaesthesiology and Neurosurgery, Loma Linda University School of Medicine, Loma Linda, CA, USA
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Liu B, Teschemacher AG, Kasparov S. Astroglia as a cellular target for neuroprotection and treatment of neuro-psychiatric disorders. Glia 2017; 65:1205-1226. [PMID: 28300322 PMCID: PMC5669250 DOI: 10.1002/glia.23136] [Citation(s) in RCA: 77] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2016] [Revised: 02/15/2017] [Accepted: 02/17/2017] [Indexed: 12/12/2022]
Abstract
Astrocytes are key homeostatic cells of the central nervous system. They cooperate with neurons at several levels, including ion and water homeostasis, chemical signal transmission, blood flow regulation, immune and oxidative stress defense, supply of metabolites and neurogenesis. Astroglia is also important for viability and maturation of stem-cell derived neurons. Neurons critically depend on intrinsic protective and supportive properties of astrocytes. Conversely, all forms of pathogenic stimuli which disturb astrocytic functions compromise neuronal functionality and viability. Support of neuroprotective functions of astrocytes is thus an important strategy for enhancing neuronal survival and improving outcomes in disease states. In this review, we first briefly examine how astrocytic dysfunction contributes to major neurological disorders, which are traditionally associated with malfunctioning of processes residing in neurons. Possible molecular entities within astrocytes that could underpin the cause, initiation and/or progression of various disorders are outlined. In the second section, we explore opportunities enhancing neuroprotective function of astroglia. We consider targeting astrocyte-specific molecular pathways which are involved in neuroprotection or could be expected to have a therapeutic value. Examples of those are oxidative stress defense mechanisms, glutamate uptake, purinergic signaling, water and ion homeostasis, connexin gap junctions, neurotrophic factors and the Nrf2-ARE pathway. We propose that enhancing the neuroprotective capacity of astrocytes is a viable strategy for improving brain resilience and developing new therapeutic approaches.
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Affiliation(s)
- Beihui Liu
- School of Physiology, Pharmacology and NeuroscienceUniversity of Bristol, University WalkBS8 1TDUnited Kingdom
| | - Anja G. Teschemacher
- School of Physiology, Pharmacology and NeuroscienceUniversity of Bristol, University WalkBS8 1TDUnited Kingdom
| | - Sergey Kasparov
- School of Physiology, Pharmacology and NeuroscienceUniversity of Bristol, University WalkBS8 1TDUnited Kingdom
- Institute for Chemistry and BiologyBaltic Federal UniversityKaliningradRussian Federation
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Hanusova Z, Mosko T, Matej R, Holada K. Precision in the design of an experimental study deflects the significance of proteinase-activated receptor 2 expression in scrapie-inoculated mice. J Gen Virol 2017; 98:1563-1569. [DOI: 10.1099/jgv.0.000803] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Affiliation(s)
- Zdenka Hanusova
- Institute of Immunology and Microbiology, First Faculty of Medicine, Charles University, Studnickova 7, Prague 2, 128 00, Czech Republic
| | - Tibor Mosko
- Institute of Immunology and Microbiology, First Faculty of Medicine, Charles University, Studnickova 7, Prague 2, 128 00, Czech Republic
| | - Radoslav Matej
- Department of Pathology and Molecular Medicine, Thomayer Teaching Hospital, Videnska 800, Prague 4, 14059, Czech Republic
- Department of Pathology, First Faculty of Medicine, Charles University, Studnickova 2, Prague 2, 12800, Czech Republic
| | - Karel Holada
- Institute of Immunology and Microbiology, First Faculty of Medicine, Charles University, Studnickova 7, Prague 2, 128 00, Czech Republic
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Role of thrombin-PAR1-PKCθ/δ axis in brain pericytes in thrombin-induced MMP-9 production and blood-brain barrier dysfunction in vitro. Neuroscience 2017; 350:146-157. [PMID: 28344073 DOI: 10.1016/j.neuroscience.2017.03.026] [Citation(s) in RCA: 54] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2016] [Revised: 03/09/2017] [Accepted: 03/14/2017] [Indexed: 02/08/2023]
Abstract
Thrombin, an essential component in the coagulation cascade, participates in the pathogenesis of brain diseases, such as ischemic stroke, intracerebral hemorrhage, Alzheimer's disease and Parkinson's disease through blood-brain barrier (BBB) dysfunction. It is thought that the thrombin-matrix metalloproteinase (MMP)-9 axis is an important process in the pathogenesis of neurovascular disease, such as BBB dysfunction. We recently reported that brain pericytes are the most MMP-9-releasing cells in response to thrombin stimulation among the BBB-constituting cells. This thrombin-induced MMP-9 release is partially due to protease-activated receptor (PAR1), one of the specific thrombin receptors. Then, we evaluated the intracellular signaling pathways involved in MMP-9 release and the contribution of thrombin-reactive brain pericytes to BBB dysfunction. PKC activator evoked MMP-9 release from brain pericytes. The thrombin-induced MMP-9 release was inhibited by U0126, LY294002, Go6976, and Go6983. However, Go6976 decreased phosphorylation levels of PKCθ and Akt, and Go6983 decreased phosphorylation levels of PKCδ and extracellular signal-regulated kinase (ERK). Additionally, treatment of pericytes with thrombin or PAR1-activating peptide stimulated PKCδ/θ signaling. These substances impaired brain endothelial barrier function in the presence of brain pericytes. Brain pericytes function through two independent downstream signaling pathways via PAR1 activation to release MMP-9 in response to thrombin - the PKCθ-Akt pathway and the PKCδ-ERK1/2 pathway. These pathways participate in PAR1-mediated MMP-9 release from pericytes, which leads to BBB dysfunction. Brain pericytes and their specific signaling pathways could provide novel therapeutic targets for thrombin-induced neurovascular diseases.
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Shavit-Stein E, Artan-Furman A, Feingold E, Ben Shimon M, Itzekson-Hayosh Z, Chapman J, Vlachos A, Maggio N. Protease Activated Receptor 2 (PAR2) Induces Long-Term Depression in the Hippocampus through Transient Receptor Potential Vanilloid 4 (TRPV4). Front Mol Neurosci 2017; 10:42. [PMID: 28303089 PMCID: PMC5332813 DOI: 10.3389/fnmol.2017.00042] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2016] [Accepted: 02/07/2017] [Indexed: 11/25/2022] Open
Abstract
Protease activated receptors (PARs) are involved in regulating synaptic transmission and plasticity in the brain. While it is well-accepted that PAR1 mediates long-term potentiation (LTP) of excitatory synaptic strength, the role of PAR2 in synaptic plasticity remains not well-understood. In this study, we assessed the role of PAR2-signaling in plasticity at hippocampal Schaffer collateral-CA1 synapses. Using field potential recordings, we report that PAR2-activation leads to long-term depression (LTD) of synaptic transmission through a protein kinase A -dependent, Transient Receptor Potential Vanilloid 4 -mediated mechanism, which requires the activation of N-methyl-D-aspartate receptors. These results demonstrate that the effects of PAR2 on synaptic plasticity are distinct from what is observed upon PAR1-activation. Thus, we propose that the activation of different classes of PARs, i.e., PAR1 and PAR2, may set the threshold of synaptic plasticity in the hippocampal network by balancing LTP and LTD.
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Affiliation(s)
- Efrat Shavit-Stein
- Department of Neurology, The Chaim Sheba Medical Center Tel HaShomer, Israel
| | - Avital Artan-Furman
- Department of Neurology, The Chaim Sheba Medical Center Tel HaShomer, Israel
| | - Ekaterina Feingold
- Department of Neurology, The Chaim Sheba Medical Center Tel HaShomer, Israel
| | - Marina Ben Shimon
- Department of Neurology, The Chaim Sheba Medical CenterTel HaShomer, Israel; Department of Neurology and Neurosurgery, Sackler Faculty of Medicine, Tel Aviv UniversityTel Aviv, Israel
| | | | - Joab Chapman
- Department of Neurology, The Chaim Sheba Medical CenterTel HaShomer, Israel; Department of Neurology and Neurosurgery, Sackler Faculty of Medicine, Tel Aviv UniversityTel Aviv, Israel; Sagol School of Neuroscience, Tel Aviv UniversityTel Aviv, Israel
| | - Andreas Vlachos
- Institute of Anatomy II, Faculty of Medicine, Heinrich-Heine-University Duesseldorf, Germany
| | - Nicola Maggio
- Department of Neurology, The Chaim Sheba Medical CenterTel HaShomer, Israel; Department of Neurology and Neurosurgery, Sackler Faculty of Medicine, Tel Aviv UniversityTel Aviv, Israel; Sagol School of Neuroscience, Tel Aviv UniversityTel Aviv, Israel; Talpiot Medical Leadership Program, The Chaim Sheba Medical CenterTel HaShomer, Israel
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Whetstone WD, Walker B, Trivedi A, Lee S, Noble-Haeusslein LJ, Hsu JYC. Protease-Activated Receptor-1 Supports Locomotor Recovery by Biased Agonist Activated Protein C after Contusive Spinal Cord Injury. PLoS One 2017; 12:e0170512. [PMID: 28122028 PMCID: PMC5266300 DOI: 10.1371/journal.pone.0170512] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2016] [Accepted: 01/05/2017] [Indexed: 12/11/2022] Open
Abstract
Thrombin-induced secondary injury is mediated through its receptor, protease activated receptor-1 (PAR-1), by "biased agonism." Activated protein C (APC) acts through the same PAR-1 receptor but functions as an anti-coagulant and anti-inflammatory protein, which counteracts many of the effects of thrombin. Although the working mechanism of PAR-1 is becoming clear, the functional role of PAR-1 and its correlation with APC in the injured spinal cord remains to be elucidated. Here we investigated if PAR-1 and APC are determinants of long-term functional recovery after a spinal cord contusive injury using PAR-1 null and wild-type mice. We found that neutrophil infiltration and disruption of the blood-spinal cord barrier were significantly reduced in spinal cord injured PAR-1 null mice relative to the wild-type group. Both locomotor recovery and ability to descend an inclined grid were significantly improved in the PAR-1 null group 42 days after injury and this improvement was associated with greater long-term sparing of white matter and a reduction in glial scarring. Wild-type mice treated with APC acutely after injury showed a similar level of improved locomotor recovery to that of PAR-1 null mice. However, improvement of APC-treated PAR-1 null mice was indistinguishable from that of vehicle-treated PAR-1 null mice, suggesting that APC acts through PAR-1. Collectively, our findings define a detrimental role of thrombin-activated PAR-1 in wound healing and further validate APC, also acting through the PAR-1 by biased agonism, as a promising therapeutic target for spinal cord injury.
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Affiliation(s)
- William D. Whetstone
- Department of Emergency Medicine, University of California, San Francisco, California, United States of America
| | - Breset Walker
- Department of Neurological Surgery, University of California, San Francisco, California, United States of America
| | - Alpa Trivedi
- Department of Neurological Surgery, University of California, San Francisco, California, United States of America
| | - Sangmi Lee
- Department of Neurological Surgery, University of California, San Francisco, California, United States of America
| | - Linda J. Noble-Haeusslein
- Department of Neurological Surgery, University of California, San Francisco, California, United States of America
- Department of Physical Therapy and Rehabilitation Science, University of California, San Francisco, California, United States of America
| | - Jung-Yu C. Hsu
- Department of Cell Biology and Anatomy, College of Medicine, National Cheng Kung University, Tainan City, Taiwan
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Pompili E, Fabrizi C, Somma F, Correani V, Maras B, Schininà ME, Ciraci V, Artico M, Fornai F, Fumagalli L. PAR1 activation affects the neurotrophic properties of Schwann cells. Mol Cell Neurosci 2017; 79:23-33. [PMID: 28064059 DOI: 10.1016/j.mcn.2017.01.001] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2016] [Revised: 12/14/2016] [Accepted: 01/01/2017] [Indexed: 01/02/2023] Open
Abstract
Protease-activated receptor-1 (PAR1) is the prototypic member of a family of four G-protein-coupled receptors that signal in response to extracellular proteases. In the peripheral nervous system, the expression and/or the role of PARs are still poorly investigated. High PAR1 mRNA expression was found in the rat dorsal root ganglia and the signal intensity of PAR1 mRNA increased in response to sciatic nerve transection. In the sciatic nerve, functional PAR1 receptor was reported at the level of non-compacted Schwann cell myelin microvilli of the nodes of Ranvier. Schwann cells are the principal population of glial cells of the peripheral nervous system which myelinate axons playing an important role during axonal regeneration and remyelination. The present study was undertaken in order to determine if the activation of PAR1 affects the neurotrophic properties of Schwann cells. Our results suggest that the stimulation of PAR1 could potentiate the Schwann cell ability to favour nerve regeneration. In fact, the conditioned medium obtained from Schwann cell cultures challenged with a specific PAR1 activating peptide (PAR1 AP) displays increased neuroprotective and neurotrophic properties with respect to the culture medium from untreated Schwann cells. The proteomic analysis of secreted proteins in untreated and PAR1 AP-treated Schwann cells allowed the identification of factors differentially expressed in the two samples. Some of them (such as macrophage migration inhibitory factor, matrix metalloproteinase-2, decorin, syndecan 4, complement C1r subcomponent, angiogenic factor with G patch and FHA domains 1) appear to be transcriptionally regulated after PAR1 AP treatment as shown by RT-PCR.
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Affiliation(s)
- Elena Pompili
- Department of Anatomy, Histology, Forensic Medicine and Orthopedics, Sapienza University of Rome, Rome, Italy.
| | - Cinzia Fabrizi
- Department of Anatomy, Histology, Forensic Medicine and Orthopedics, Sapienza University of Rome, Rome, Italy
| | - Francesca Somma
- Department of Anatomy, Histology, Forensic Medicine and Orthopedics, Sapienza University of Rome, Rome, Italy
| | - Virginia Correani
- Department of Biochemical Sciences, Sapienza University of Rome, Rome, Italy
| | - Bruno Maras
- Department of Biochemical Sciences, Sapienza University of Rome, Rome, Italy
| | | | - Viviana Ciraci
- Department of Anatomy, Histology, Forensic Medicine and Orthopedics, Sapienza University of Rome, Rome, Italy
| | - Marco Artico
- Department of Sensory Organs, Sapienza University of Rome, Rome, Italy
| | - Francesco Fornai
- Department of Human Morphology and Applied Biology, University of Pisa, Pisa, Italy; IRCCS Neuromed, Pozzilli, Italy
| | - Lorenzo Fumagalli
- Department of Anatomy, Histology, Forensic Medicine and Orthopedics, Sapienza University of Rome, Rome, Italy
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Wang F, Gao J, Zhao J, Zhang W, Bai J, Jia H, Wang Y. A new two-mode fluorescence signal amplification strategy for protease activity assay based on graphene oxide. RSC Adv 2017. [DOI: 10.1039/c7ra08166a] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A new graphene oxide-based two-mode fluorescence signal amplification strategy for the detection of protease activity has been established.
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Affiliation(s)
- Fangfang Wang
- Key Laboratory of Medicinal Chemistry and Molecular Diagnosis of Ministry of Education
- Key Laboratory of Analytical Science and Technology of Hebei Province
- College of Chemistry and Environment Science
- Hebei University
- Baoding
| | - Jie Gao
- Key Laboratory of Medicinal Chemistry and Molecular Diagnosis of Ministry of Education
- Key Laboratory of Analytical Science and Technology of Hebei Province
- College of Chemistry and Environment Science
- Hebei University
- Baoding
| | - Jianwei Zhao
- Key Laboratory of Medicinal Chemistry and Molecular Diagnosis of Ministry of Education
- Key Laboratory of Analytical Science and Technology of Hebei Province
- College of Chemistry and Environment Science
- Hebei University
- Baoding
| | - Wenyue Zhang
- Key Laboratory of Medicinal Chemistry and Molecular Diagnosis of Ministry of Education
- Key Laboratory of Analytical Science and Technology of Hebei Province
- College of Chemistry and Environment Science
- Hebei University
- Baoding
| | - Jie Bai
- Medical Comprehensive Experimental Center
- Hebei University
- Baoding
- P. R. China
| | - Hongxia Jia
- Key Laboratory of Medicinal Chemistry and Molecular Diagnosis of Ministry of Education
- Key Laboratory of Analytical Science and Technology of Hebei Province
- College of Chemistry and Environment Science
- Hebei University
- Baoding
| | - Yucong Wang
- Key Laboratory of Medicinal Chemistry and Molecular Diagnosis of Ministry of Education
- Key Laboratory of Analytical Science and Technology of Hebei Province
- College of Chemistry and Environment Science
- Hebei University
- Baoding
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Morihara R, Yamashita T, Kono S, Shang J, Nakano Y, Sato K, Hishikawa N, Ohta Y, Heitmeier S, Perzborn E, Abe K. Reduction of intracerebral hemorrhage by rivaroxaban after tPA thrombolysis is associated with downregulation of PAR-1 and PAR-2. J Neurosci Res 2016; 95:1818-1828. [PMID: 28035779 DOI: 10.1002/jnr.24013] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2016] [Revised: 11/18/2016] [Accepted: 12/12/2016] [Indexed: 12/20/2022]
Abstract
This study aimed to assess the risk of intracerebral hemorrhage (ICH) after tissue-type plasminogen activator (tPA) treatment in rivaroxaban compared with warfarin-pretreated male Wistar rat brain after ischemia in relation to activation profiles of protease-activated receptor-1, -2, -3, and -4 (PAR-1, -2, -3, and -4). After pretreatment with warfarin (0.2 mg/kg/day), low-dose rivaroxaban (60 mg/kg/day), high-dose rivaroxaban (120 mg/kg/day), or vehicle for 14 days, transient middle cerebral artery occlusion was induced for 90 min, followed by reperfusion with tPA (10 mg/kg/10 ml). Infarct volume, hemorrhagic volume, immunoglobulin G leakage, and blood parameters were examined. Twenty-four hours after reperfusion, immunohistochemistry for PARs was performed in brain sections. ICH volume was increased in the warfarin-pretreated group compared with the rivaroxaban-treated group. PAR-1, -2, -3, and -4 were widely expressed in the normal brain, and their levels were increased in the ischemic brain, especially in the peri-ischemic lesion. Warfarin pretreatment enhanced the expression of PAR-1 and PAR-2 in the peri-ischemic lesion, whereas rivaroxaban pretreatment did not. The present study shows a lower risk of brain hemorrhage in rivaroxaban-pretreated compared with warfarin-pretreated rats following tPA administration to the ischemic brain. It is suggested that the relative downregulation of PAR-1 and PAR-2 by rivaroxaban compared with warfarin pretreatment might be partly involved in the mechanism of reduced hemorrhagic complications in patients receiving rivaroxaban in clinical trials. © 2016 Wiley Periodicals, Inc.
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Affiliation(s)
- Ryuta Morihara
- Departments of Neurology, Dentistry and Pharmaceutical Sciences, Graduate School of Medicine, Okayama University, Okayama, Japan
| | - Toru Yamashita
- Departments of Neurology, Dentistry and Pharmaceutical Sciences, Graduate School of Medicine, Okayama University, Okayama, Japan
| | - Syoichiro Kono
- Departments of Neurology, Dentistry and Pharmaceutical Sciences, Graduate School of Medicine, Okayama University, Okayama, Japan
| | - Jingwei Shang
- Departments of Neurology, Dentistry and Pharmaceutical Sciences, Graduate School of Medicine, Okayama University, Okayama, Japan
| | - Yumiko Nakano
- Departments of Neurology, Dentistry and Pharmaceutical Sciences, Graduate School of Medicine, Okayama University, Okayama, Japan
| | - Kota Sato
- Departments of Neurology, Dentistry and Pharmaceutical Sciences, Graduate School of Medicine, Okayama University, Okayama, Japan
| | - Nozomi Hishikawa
- Departments of Neurology, Dentistry and Pharmaceutical Sciences, Graduate School of Medicine, Okayama University, Okayama, Japan
| | - Yasuyuki Ohta
- Departments of Neurology, Dentistry and Pharmaceutical Sciences, Graduate School of Medicine, Okayama University, Okayama, Japan
| | - Stefan Heitmeier
- Bayer Pharma AG, Drug Discovery-Global Therapeutic Research Groups, Cardiovascular Pharmacology, Wuppertal, Germany
| | - Elisabeth Perzborn
- Bayer Pharma AG, Drug Discovery-Global Therapeutic Research Groups, Cardiovascular Pharmacology, Wuppertal, Germany
| | - Koji Abe
- Departments of Neurology, Dentistry and Pharmaceutical Sciences, Graduate School of Medicine, Okayama University, Okayama, Japan
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Interference with Protease-activated Receptor 1 Alleviates Neuronal Cell Death Induced by Lipopolysaccharide-Stimulated Microglial Cells through the PI3K/Akt Pathway. Sci Rep 2016; 6:38247. [PMID: 27910893 PMCID: PMC5133627 DOI: 10.1038/srep38247] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2016] [Accepted: 11/07/2016] [Indexed: 12/21/2022] Open
Abstract
Excessive microglial cells activation in response to inflammatory stimuli leads to synaptic loss, dysfunction, and neuronal cell death. Activated microglia are involved in the pathogenesis of neurological conditions and frequently contribute to several complications. Accumulating evidence suggests that signaling through PAR-1 is involved in inflammation, however, its function has yet to be fully elucidated. Here, we have demonstrated that the suppression of PAR-1 leads to down-regulation of inflammatory factors including IL-1β, IL-6, TNF-α, NO, as well as the prevention of activation of NF-κB in BV2 cells. In addition, we found that a PAR-1 antagonist, SCH, prevented LPS-induced excessive microglial activation in a dose-dependent manner. As a result of SCH treatment, neuronal cell death via up-regulation of Akt-mediated pathways was reduced. Our results demonstrate that the beneficial effects of SCH are linked to its ability to block an inflammatory response. Further, we found that SCH inhibited the death of PC12 neurons from the cytotoxicity of activated BV2 cells via activation of the PI3K/Akt pathway. These neuro-protective effects appear to be related to inhibition of PAR-1, and represents a novel neuroprotective strategy that could has potential for use in therapeutic interventions of neuroinflammatory disease.
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Zhen X, Ng ESK, Lam FFY. Suppression of ischaemia-induced injuries in rat brain by protease-activated receptor-1 (PAR-1) activating peptide. Eur J Pharmacol 2016; 786:36-46. [DOI: 10.1016/j.ejphar.2016.05.035] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2016] [Revised: 05/25/2016] [Accepted: 05/26/2016] [Indexed: 10/21/2022]
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Nasri I, Bonnet D, Zwarycz B, d'Aldebert E, Khou S, Mezghani-Jarraya R, Quaranta M, Rolland C, Bonnart C, Mas E, Ferrand A, Cenac N, Magness S, Van Landeghem L, Vergnolle N, Racaud-Sultan C. PAR2-dependent activation of GSK3β regulates the survival of colon stem/progenitor cells. Am J Physiol Gastrointest Liver Physiol 2016; 311:G221-36. [PMID: 27313176 PMCID: PMC5007290 DOI: 10.1152/ajpgi.00328.2015] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/18/2015] [Accepted: 05/16/2016] [Indexed: 01/31/2023]
Abstract
Protease-activated receptors PAR1 and PAR2 play an important role in the control of epithelial cell proliferation and migration. However, the survival of normal and tumor intestinal stem/progenitor cells promoted by proinflammatory mediators may be critical in oncogenesis. The glycogen synthase kinase-3β (GSK3β) pathway is overactivated in colon cancer cells and promotes their survival and drug resistance. We thus aimed to determine PAR1 and PAR2 effects on normal and tumor intestinal stem/progenitor cells and whether they involved GSK3β. First, PAR1 and PAR2 were identified in colon stem/progenitor cells by immunofluorescence. In three-dimensional cultures of murine crypt units or single tumor Caco-2 cells, PAR2 activation decreased numbers and size of normal or cancerous spheroids, and PAR2-deficient spheroids showed increased proliferation, indicating that PAR2 represses proliferation. PAR2-stimulated normal cells were more resistant to stress (serum starvation or spheroid passaging), suggesting prosurvival effects of PAR2 Accordingly, active caspase-3 was strongly increased in PAR2-deficient normal spheroids. PAR2 but not PAR1 triggered GSK3β activation through serine-9 dephosphorylation in normal and tumor cells. The PAR2-triggered GSK3β activation implicates an arrestin/PP2A/GSK3β complex that is dependent on the Rho kinase activity. Loss of PAR2 was associated with high levels of GSK3β nonactive form, strengthening the role of PAR2 in GSK3β activation. GSK3 pharmacological inhibition impaired the survival of PAR2-stimulated spheroids and serum-starved cells. Altogether our data identify PAR2/GSK3β as a novel pathway that plays a critical role in the regulation of stem/progenitor cell survival and proliferation in normal colon crypts and colon cancer.
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Affiliation(s)
- Imen Nasri
- 1Institut de Recherche en Santé Digestive, Université de Toulouse, Institut National de la Santé et de la Recherche Médicale, Institut National de la Recherche Agronomique, Ecole Nationale Vétérinaire de Toulouse, Université Paul Sabatier, Toulouse, France; ,2Laboratoire de Chimie des Substances Naturelles, Faculté des Sciences de Sfax, Université de Sfax, Sfax, Tunisia;
| | - Delphine Bonnet
- 1Institut de Recherche en Santé Digestive, Université de Toulouse, Institut National de la Santé et de la Recherche Médicale, Institut National de la Recherche Agronomique, Ecole Nationale Vétérinaire de Toulouse, Université Paul Sabatier, Toulouse, France; ,3Service de Médecine Interne, Fédération Digestive, Centre Hospitalier Universitaire Purpan, Toulouse, France;
| | - Bailey Zwarycz
- 4Departments of Medicine and Cell Biology & Physiology, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina;
| | - Emilie d'Aldebert
- 1Institut de Recherche en Santé Digestive, Université de Toulouse, Institut National de la Santé et de la Recherche Médicale, Institut National de la Recherche Agronomique, Ecole Nationale Vétérinaire de Toulouse, Université Paul Sabatier, Toulouse, France;
| | - Sokchea Khou
- 1Institut de Recherche en Santé Digestive, Université de Toulouse, Institut National de la Santé et de la Recherche Médicale, Institut National de la Recherche Agronomique, Ecole Nationale Vétérinaire de Toulouse, Université Paul Sabatier, Toulouse, France;
| | - Raoudha Mezghani-Jarraya
- 2Laboratoire de Chimie des Substances Naturelles, Faculté des Sciences de Sfax, Université de Sfax, Sfax, Tunisia;
| | - Muriel Quaranta
- 1Institut de Recherche en Santé Digestive, Université de Toulouse, Institut National de la Santé et de la Recherche Médicale, Institut National de la Recherche Agronomique, Ecole Nationale Vétérinaire de Toulouse, Université Paul Sabatier, Toulouse, France;
| | - Corinne Rolland
- 1Institut de Recherche en Santé Digestive, Université de Toulouse, Institut National de la Santé et de la Recherche Médicale, Institut National de la Recherche Agronomique, Ecole Nationale Vétérinaire de Toulouse, Université Paul Sabatier, Toulouse, France;
| | - Chrystelle Bonnart
- 1Institut de Recherche en Santé Digestive, Université de Toulouse, Institut National de la Santé et de la Recherche Médicale, Institut National de la Recherche Agronomique, Ecole Nationale Vétérinaire de Toulouse, Université Paul Sabatier, Toulouse, France;
| | - Emmanuel Mas
- 1Institut de Recherche en Santé Digestive, Université de Toulouse, Institut National de la Santé et de la Recherche Médicale, Institut National de la Recherche Agronomique, Ecole Nationale Vétérinaire de Toulouse, Université Paul Sabatier, Toulouse, France; ,5Service de Gastroentérologie, Hépatologie et Nutrition, Hôpital des Enfants, Toulouse, France; and
| | - Audrey Ferrand
- 1Institut de Recherche en Santé Digestive, Université de Toulouse, Institut National de la Santé et de la Recherche Médicale, Institut National de la Recherche Agronomique, Ecole Nationale Vétérinaire de Toulouse, Université Paul Sabatier, Toulouse, France;
| | - Nicolas Cenac
- 1Institut de Recherche en Santé Digestive, Université de Toulouse, Institut National de la Santé et de la Recherche Médicale, Institut National de la Recherche Agronomique, Ecole Nationale Vétérinaire de Toulouse, Université Paul Sabatier, Toulouse, France;
| | - Scott Magness
- 4Departments of Medicine and Cell Biology & Physiology, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina;
| | - Laurianne Van Landeghem
- 6Institut National de la Santé et de la Recherche Médicale U913, Université de Nantes, Institut des Maladies de l'Appareil Digestif, Nantes, France
| | - Nathalie Vergnolle
- 1Institut de Recherche en Santé Digestive, Université de Toulouse, Institut National de la Santé et de la Recherche Médicale, Institut National de la Recherche Agronomique, Ecole Nationale Vétérinaire de Toulouse, Université Paul Sabatier, Toulouse, France;
| | - Claire Racaud-Sultan
- Institut de Recherche en Santé Digestive, Université de Toulouse, Institut National de la Santé et de la Recherche Médicale, Institut National de la Recherche Agronomique, Ecole Nationale Vétérinaire de Toulouse, Université Paul Sabatier, Toulouse, France;
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Citron BA, Ameenuddin S, Uchida K, Suo WZ, SantaCruz K, Festoff BW. Membrane lipid peroxidation in neurodegeneration: Role of thrombin and proteinase-activated receptor-1. Brain Res 2016; 1643:10-7. [DOI: 10.1016/j.brainres.2016.04.071] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2015] [Revised: 04/10/2016] [Accepted: 04/28/2016] [Indexed: 02/08/2023]
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Schuldt G, Galanis C, Strehl A, Hick M, Schiener S, Lenz M, Deller T, Maggio N, Vlachos A. Inhibition of Protease-Activated Receptor 1 Does not Affect Dendritic Homeostasis of Cultured Mouse Dentate Granule Cells. Front Neuroanat 2016; 10:64. [PMID: 27378862 PMCID: PMC4904007 DOI: 10.3389/fnana.2016.00064] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2016] [Accepted: 05/27/2016] [Indexed: 12/25/2022] Open
Abstract
Protease-activated receptors (PARs) are widely expressed in the central nervous system (CNS). While a firm link between PAR1-activation and functional synaptic and intrinsic neuronal properties exists, studies on the role of PAR1 in neural structural plasticity are scarce. The physiological function of PAR1 in the brain remains not well understood. We here sought to determine whether prolonged pharmacologic PAR1-inhibition affects dendritic morphologies of hippocampal neurons. To address this question we employed live-cell microscopy of mouse dentate granule cell dendrites in 3-week old entorhino-hippocampal slice cultures prepared from Thy1-GFP mice. A subset of cultures were treated with the PAR1-inhibitor SCH79797 (1 μM; up to 3 weeks). No major effects of PAR1-inhibition on static and dynamic parameters of dentate granule cell dendrites were detected under control conditions. Granule cells of PAR1-deficient slice cultures showed unaltered dendritic morphologies, dendritic spine densities and excitatory synaptic strength. Furthermore, we report that PAR1-inhibition does not prevent dendritic retraction following partial deafferentation in vitro. Consistent with this finding, no major changes in PAR1-mRNA levels were detected in the denervated dentate gyrus (DG). We conclude that neural PAR1 is not involved in regulating the steady-state dynamics or deafferentation-induced adaptive changes of cultured dentate granule cell dendrites. These results indicate that drugs targeting neural PAR1-signals may not affect the stability and structural integrity of neuronal networks in healthy brain regions.
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Affiliation(s)
- Gerlind Schuldt
- Institute of Clinical Neuroanatomy, Neuroscience Center, Goethe-University Frankfurt Frankfurt, Germany
| | - Christos Galanis
- Institute of Clinical Neuroanatomy, Neuroscience Center, Goethe-University Frankfurt Frankfurt, Germany
| | - Andreas Strehl
- Institute of Clinical Neuroanatomy, Neuroscience Center, Goethe-University Frankfurt Frankfurt, Germany
| | - Meike Hick
- Institute of Clinical Neuroanatomy, Neuroscience Center, Goethe-University Frankfurt Frankfurt, Germany
| | - Sabine Schiener
- Institute of Clinical Neuroanatomy, Neuroscience Center, Goethe-University Frankfurt Frankfurt, Germany
| | - Maximilian Lenz
- Institute of Clinical Neuroanatomy, Neuroscience Center, Goethe-University FrankfurtFrankfurt, Germany; Institute of Anatomy II, Faculty of Medicine, Heinrich-Heine-University DüsseldorfDüsseldorf, Germany
| | - Thomas Deller
- Institute of Clinical Neuroanatomy, Neuroscience Center, Goethe-University Frankfurt Frankfurt, Germany
| | - Nicola Maggio
- Department of Neurology, The Sagol Center for Neurosciences, Sheba Medical Center, Affiliated to the Sackler Faculty of Medicine, Tel Aviv UniversityTel Aviv, Israel; Talpiot Medical Leadership Program, Department of Neurology and J. Sagol Neuroscience Center, The Chaim Sheba Medical CenterTel HaShomer, Israel; Sagol School of Neuroscience, Tel Aviv UniversityTel Aviv, Israel
| | - Andreas Vlachos
- Institute of Clinical Neuroanatomy, Neuroscience Center, Goethe-University FrankfurtFrankfurt, Germany; Institute of Anatomy II, Faculty of Medicine, Heinrich-Heine-University DüsseldorfDüsseldorf, Germany
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50
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Wan S, Cheng Y, Jin H, Guo D, Hua Y, Keep RF, Xi G. Microglia Activation and Polarization After Intracerebral Hemorrhage in Mice: the Role of Protease-Activated Receptor-1. Transl Stroke Res 2016; 7:478-487. [PMID: 27206851 DOI: 10.1007/s12975-016-0472-8] [Citation(s) in RCA: 114] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2016] [Revised: 05/10/2016] [Accepted: 05/13/2016] [Indexed: 02/06/2023]
Abstract
Polarized microglia play a dual (beneficial/detrimental) role in neurological diseases. However, the status and the factors that modulate microglia polarization in intracerebral hemorrhage (ICH) remain unclear. In the present study, we investigated the role of protease-activated receptor-1 (PAR-1, a thrombin receptor) in ICH-induced microglia polarization in mice. Male wild-type (WT) and PAR-1 knockout (PAR-1 KO) mice received an infusion of 30-μL autologous blood or saline into the right basal ganglia. Mice were euthanized at different time points and the brains were used for Western blotting and immunohistochemistry. Some mice had magnetic resonance imaging. We found that ICH induced microglia activation and polarization. M1 phenotypic markers were markedly increased and reached a peak as early as 4 h, remained high at 3 days and decreased 7 days after ICH. M2 phenotypic markers were upregulated later than M1 markers reaching a peak at day 1 and declining by day 7 after ICH. PAR-1 was upregulated after ICH and expressed in the neurons and microglia. ICH induced less brain swelling and neuronal death in PAR-1 KO mice, and this was associated with less M1 polarization and reduced proinflammatory cytokine levels in the brain. In conclusion, these results suggest that polarized microglia occur dynamically after ICH and that PAR-1 plays a role in the microglia activation and polarization.
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Affiliation(s)
- Shu Wan
- Department of Neurosurgery, University of Michigan, Ann Arbor, Michigan, USA.,Department of Neurosurgery, The 1st Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China
| | - Yingying Cheng
- Department of Neurosurgery, University of Michigan, Ann Arbor, Michigan, USA.,Department of Neurology, The 1st Affiliated Hospital, School of Medicine, Jilin University, Changchun, China
| | - Hang Jin
- Department of Neurosurgery, University of Michigan, Ann Arbor, Michigan, USA.,Department of Neurology, The 1st Affiliated Hospital, School of Medicine, Jilin University, Changchun, China
| | - Dewei Guo
- Department of Neurosurgery, University of Michigan, Ann Arbor, Michigan, USA
| | - Ya Hua
- Department of Neurosurgery, University of Michigan, Ann Arbor, Michigan, USA
| | - Richard F Keep
- Department of Neurosurgery, University of Michigan, Ann Arbor, Michigan, USA
| | - Guohua Xi
- Department of Neurosurgery, University of Michigan, Ann Arbor, Michigan, USA. .,University of Michigan, Room5018 BSRB, 109 Zina Pitcher Place, Ann Arbor, MI, 48109-2200, USA.
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