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Serna-Salas SA, Arroyave-Ospina JC, Zhang M, Damba T, Buist-Homan M, Muñoz-Ortega MH, Ventura-Juárez J, Moshage H. α-1 Adrenergic receptor antagonist doxazosin reverses hepatic stellate cells activation via induction of senescence. Mech Ageing Dev 2021; 201:111617. [PMID: 34958827 DOI: 10.1016/j.mad.2021.111617] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2021] [Revised: 12/06/2021] [Accepted: 12/21/2021] [Indexed: 12/12/2022]
Abstract
BACKGROUND Activated hepatic stellate cells (aHSCs) are the main effector cells during liver fibrogenesis. α-1 adrenergic antagonist doxazosin (DX) was shown to be anti-fibrotic in an in vivo model of liver fibrosis (LF), but the mechanism remains to be elucidated. Recent studies suggest that reversion of LF can be achieved by inducing cellular senescence characterized by irreversible cell-cycle arrest and acquisition of the senescence-associated secretory phenotype (SASP). AIM To elucidate the mechanism of the anti-fibrotic effect of DX and determine whether it induces senescence. METHODS Primary culture-activated rat HSCs were used. mRNA and protein expression were measured by qPCR and Western blot, respectively. Cell proliferation was assessed by BrdU incorporation and xCelligence analysis. TGF-β was used for maximal HSC activation. Norepinephrine (NE), PMA and m-3M3FBS were used to activate alpha-1 adrenergic signaling. RESULTS Expression of Col1α1 was significantly decreased by DX (10 µmol/L) at mRNA (-30 %) and protein level (-50 %) in TGF-β treated aHSCs. DX significantly reduced aHSCs proliferation and increased expression of senescence and SASP markers. PMA and m-3M3FBS reversed the effect of DX on senescence markers. CONCLUSION Doxazosin reverses the fibrogenic phenotype of aHSCs and induces the senescence phenotype.
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Affiliation(s)
- Sandra A Serna-Salas
- Dept. Morphology, Autonomous University of Aguascalientes, Aguascalientes, Mexico; Dept. Gastroenterology and Hepatology, University of Groningen, University Medical Center Groningen, Groningen, the Netherlands
| | - Johanna C Arroyave-Ospina
- Dept. Gastroenterology and Hepatology, University of Groningen, University Medical Center Groningen, Groningen, the Netherlands
| | - Mengfan Zhang
- Dept. Gastroenterology and Hepatology, University of Groningen, University Medical Center Groningen, Groningen, the Netherlands
| | - Turtushikh Damba
- Dept. Gastroenterology and Hepatology, University of Groningen, University Medical Center Groningen, Groningen, the Netherlands
| | - Manon Buist-Homan
- Dept. Gastroenterology and Hepatology, University of Groningen, University Medical Center Groningen, Groningen, the Netherlands; Dept. Laboratory Medicine, University of Groningen, University Medical Center Groningen, Groningen, the Netherlands
| | | | | | - Han Moshage
- Dept. Gastroenterology and Hepatology, University of Groningen, University Medical Center Groningen, Groningen, the Netherlands; Dept. Laboratory Medicine, University of Groningen, University Medical Center Groningen, Groningen, the Netherlands
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Non-oxidative band-3 clustering agents cause the externalization of phosphatidylserine on erythrocyte surfaces by a calcium-independent mechanism. BIOCHIMICA ET BIOPHYSICA ACTA-BIOMEMBRANES 2020; 1862:183231. [PMID: 32119860 DOI: 10.1016/j.bbamem.2020.183231] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/29/2019] [Revised: 02/11/2020] [Accepted: 02/14/2020] [Indexed: 01/17/2023]
Abstract
Aging of red blood cells (RBCs) is associated with alteration in a wide range of RBC features, occurring each on its own timescale. A number of these changes are interrelated and initiate a cascade of biochemical and structural transformations, including band-3 clustering and phosphatidylserine (PS) externalization. Using specific band-3 clustering agents (acridine orange (AO) and ZnCl2), we examined whether treatment of RBCs with these agents may affects PS externalization and whether this process is Ca2+-dependent. RBCs were isolated from the blood of eight healthy donors upon obtaining their informed consent. The suspension was supplemented with increasing concentrations of AO or ZnCl2 (from 0.5 to 2.0 mM) and incubated at 25 °C for 60 min. To detect PS at the RBC surface, we used allophycocyanin-conjugated recombinant human Annexin V. We demonstrated, that treatment of RBCs with both clustering agents caused an elevation in the percent of cells positively labeled by Annexin-V (RBCPS), and that this value was not dependent on the presence of calcium in the buffer: RBCs treated with AO in the presence of either EDTA, EGTA or calcium exhibited similar percentage of RBCPS. Moreover, the active influx of Zn2+ into RBCs induced by their co-incubation with both ZnCl2 and A23187 did not increase the percent of RBCPS as compared to RBCs incubated with ZnCl2 alone. Taken together, these results demonstrate that the band-3 clustering agents (AO or ZnCl2) induce PS externalization in a Ca2+ independent manner, and we hereby suggest a possible scenario for this phenomenon.
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Understanding quasi-apoptosis of the most numerous enucleated components of blood needs detailed molecular autopsy. Ageing Res Rev 2017; 35:46-62. [PMID: 28109836 DOI: 10.1016/j.arr.2017.01.002] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2016] [Revised: 11/22/2016] [Accepted: 01/13/2017] [Indexed: 12/12/2022]
Abstract
Erythrocytes are the most numerous cells in human body and their function of oxygen transport is pivotal to human physiology. However, being enucleated, they are often referred to as a sac of molecules and their cellularity is challenged. Interestingly, their programmed death stands a testimony to their cell-hood. They are capable of self-execution after a defined life span by both cell-specific mechanism and that resembling the cytoplasmic events in apoptosis of nucleated cells. Since the execution process lacks the nuclear and mitochondrial events in apoptosis, it has been referred to as quasi-apoptosis or eryptosis. Several studies on molecular mechanisms underlying death of erythrocytes have been reported. The data has generated a non-cohesive sketch of the process. The lacunae in the present knowledge need to be filled to gain deeper insight into the mechanism of physiological ageing and death of erythrocytes, as well as the effect of age of organism on RBCs survival. This would entail how the most numerous cells in the human body die and enable a better understanding of signaling mechanisms of their senescence and premature eryptosis observed in individuals of advanced age.
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Raoufi Rad N, McRobb LS, Zhao Z, Lee VS, Patel NJ, Qureshi AS, Grace M, McHattan JJ, Amal Raj JV, Duong H, Kashba SR, Stoodley MA. Phosphatidylserine Translocation after Radiosurgery in an Animal Model of Arteriovenous Malformation. Radiat Res 2017; 187:701-707. [PMID: 28414573 DOI: 10.1667/rr14646.1] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Phosphatidylserine (PS) is asymmetrically distributed across the plasma membrane, located predominantly on the inner leaflet in healthy cells. Translocation of PS to the outer leaflet makes it available as a target for biological therapies. We examined PS translocation after radiosurgery in an animal model of brain arteriovenous malformation (AVM). An arteriovenous fistula was created by end-to-side anastomosis of the left external jugular vein to the common carotid artery in 6-week-old, male Sprague Dawley rats. Six weeks after AVM creation, 15 rats underwent Gamma Knife stereotactic radiosurgery receiving a single 15 Gy dose to the margin of the fistula; 15 rats received sham treatment. Externalization of PS was examined by intravenous injection of a PS-specific near-infrared probe, PSVue-794, and in vivo fluorescence optical imaging at 1, 7, 21, 42, 63 and 84 days postirradiation. Fluorescent signaling indicative of PS translocation to the luminal cell surface accumulated in the AVM region, in both irradiated and nonirradiated animals, at all time points. Fluorescence was localized specifically to the AVM region and was not present in any other anatomical sites. Translocated PS increased over time in irradiated rats (P < 0.001) but not in sham-irradiated rats and this difference reached statistical significance at day 84 (P < 0.05). In summary, vessels within the mature rat AVM demonstrate elevated PS externalization compared to normal vessels. A single dose of ionizing radiation can increase PS externalization in a time-dependent manner. Strict localization of PS externalization within the AVM region suggests that stereotactic radiosurgery can serve as an effective priming agent and PS may be a suitable candidate for vascular-targeting approaches to AVM treatment.
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Affiliation(s)
- Newsha Raoufi Rad
- a Department of Clinical Medicine, Faculty of Medicine and Health Sciences, Macquarie University, New South Wales, Australia
| | - Lucinda S McRobb
- a Department of Clinical Medicine, Faculty of Medicine and Health Sciences, Macquarie University, New South Wales, Australia
| | - Zhenjun Zhao
- a Department of Clinical Medicine, Faculty of Medicine and Health Sciences, Macquarie University, New South Wales, Australia
| | - Vivienne S Lee
- a Department of Clinical Medicine, Faculty of Medicine and Health Sciences, Macquarie University, New South Wales, Australia
| | - Nirav J Patel
- a Department of Clinical Medicine, Faculty of Medicine and Health Sciences, Macquarie University, New South Wales, Australia
| | - Anas Sarwar Qureshi
- a Department of Clinical Medicine, Faculty of Medicine and Health Sciences, Macquarie University, New South Wales, Australia
| | - Michael Grace
- b Genesis Cancer Care, Macquarie University Hospital, New South Wales, Australia
| | | | - Jude V Amal Raj
- a Department of Clinical Medicine, Faculty of Medicine and Health Sciences, Macquarie University, New South Wales, Australia
| | - Hong Duong
- a Department of Clinical Medicine, Faculty of Medicine and Health Sciences, Macquarie University, New South Wales, Australia
| | - Saleh R Kashba
- a Department of Clinical Medicine, Faculty of Medicine and Health Sciences, Macquarie University, New South Wales, Australia.,d Department of Neurosurgery, Misurata Cancer Institute, Misurata University, Misurata, Libya
| | - Marcus A Stoodley
- a Department of Clinical Medicine, Faculty of Medicine and Health Sciences, Macquarie University, New South Wales, Australia
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Carelli-Alinovi C, Pirolli D, Giardina B, Misiti F. Protein kinase C mediates caspase 3 activation: A role for erythrocyte morphology changes. Clin Hemorheol Microcirc 2016; 59:345-54. [PMID: 24840342 DOI: 10.3233/ch-141845] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
We have previously showed that morphological alterations in Red Blood Cells (RBCs) are correlated to an impaired eNOS enzymatic activity and a concomitant reduced NO derived metabolites formation. Here we extend our previous observations, reporting that RBC morphology is regulated by a series of specific cell signaling events linked to Protein Kinase C (PKC)-mediated activation of caspase 3. Pretreatment of RBCs with the PKC inhibitor chelerythrine, prior to the addition of phorbol-12-myristate-13-acetate (PMA), an activator of PKC, blocks the appearance of the morphology alterations and the sustained decrease in nitrates and nitrites levels induced by PMA. Inhibition of PKC also completely inhibits PMA mediated caspase-3 activation. On the other hand, caspase 3 inhibition, lessens the PMA induced-effects on the appearance of RBC morphology alterations, although it enhances PMA-mediated effects on nitric oxide (NO) derived metabolites levels. These data demonstrate that PKC-mediated activation of caspase 3 is an integral and essential part of signaling pathway in RBCs, that may be a regulatory factor of RBC mechanical properties, through regulation of NO metabolism.
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Affiliation(s)
- Cristiana Carelli-Alinovi
- Biochemistry and Clinical Biochemistry Institute, Catholic University, School of Medicine, Rome, Italy
| | - Davide Pirolli
- Biochemistry and Clinical Biochemistry Institute, Catholic University, School of Medicine, Rome, Italy
| | - Bruno Giardina
- Biochemistry and Clinical Biochemistry Institute, Catholic University, School of Medicine, Rome, Italy.,Istituto di Chimica del Riconoscimento Molecolare (ICRM), National Research Council (CNR), Rome, Italy
| | - Francesco Misiti
- Human, Social and Health Department, University of Cassino and Southern Lazio, V.S. Angelo, Loc. Folcara, Cassino (FR), Italy
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Identification of signalling cascades involved in red blood cell shrinkage and vesiculation. Biosci Rep 2015; 35:BSR20150019. [PMID: 25757360 PMCID: PMC4400636 DOI: 10.1042/bsr20150019] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Even though red blood cell (RBC) vesiculation is a well-documented phenomenon, notably in the context of RBC aging and blood transfusion, the exact signalling pathways and kinases involved in this process remain largely unknown. We have established a screening method for RBC vesicle shedding using the Ca2+ ionophore ionomycin which is a rapid and efficient method to promote vesiculation. In order to identify novel pathways stimulating vesiculation in RBC, we screened two libraries: the Library of Pharmacologically Active Compounds (LOPAC) and the Selleckchem Kinase Inhibitor Library for their effects on RBC from healthy donors. We investigated compounds triggering vesiculation and compounds inhibiting vesiculation induced by ionomycin. We identified 12 LOPAC compounds, nine kinase inhibitors and one kinase activator which induced RBC shrinkage and vesiculation. Thus, we discovered several novel pathways involved in vesiculation including G protein-coupled receptor (GPCR) signalling, the phosphoinositide 3-kinase (PI3K)–Akt (protein kinase B) pathway, the Jak–STAT (Janus kinase–signal transducer and activator of transcription) pathway and the Raf–MEK (mitogen-activated protein kinase kinase)–ERK (extracellular signal-regulated kinase) pathway. Moreover, we demonstrated a link between casein kinase 2 (CK2) and RBC shrinkage via regulation of the Gardos channel activity. In addition, our data showed that inhibition of several kinases with unknown functions in mature RBC, including Alk (anaplastic lymphoma kinase) kinase and vascular endothelial growth factor receptor 2 (VEGFR-2), induced RBC shrinkage and vesiculation. After screening two libraries of small bioactive molecules and kinase inhibitors, we identified several signalling pathways to be involved in red blood cell (RBC) shrinkage and vesiculation. These include the Jak (Janus kinase)–STAT (signal transducer and activator of transcription) pathway, phosphoinositide 3-kinase (PI3K)–Akt pathway, the Raf–MEK (mitogen-activated protein kinase kinase)–ERK (extracellular signal-regulated kinase) pathway and GPCR (G protein-coupled receptor) signalling.
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Transient activation of protein kinase C contributes to fluoride-induced apoptosis of rat erythrocytes. Toxicol In Vitro 2013. [DOI: 10.1016/j.tiv.2013.10.010] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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