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Wang Q, Yuan J, Shen H, Zhu Q, Chen B, Wang J, Zhu W, Yorek MA, Hall DD, Wang Z, Song LS. Calpain inhibition protects against atrial fibrillation by mitigating diabetes-associated atrial fibrosis and calcium handling dysfunction in type 2 diabetes mice. Heart Rhythm 2024:S1547-5271(24)00208-X. [PMID: 38395244 DOI: 10.1016/j.hrthm.2024.02.036] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/06/2023] [Revised: 02/13/2024] [Accepted: 02/15/2024] [Indexed: 02/25/2024]
Abstract
BACKGROUND Diabetes mellitus (DM) is a major risk factor for atrial structural remodeling and atrial fibrillation (AF). Calpain activity is hypothesized to promote atrial remodeling and AF. OBJECTIVE The purpose of this study was to investigate the role of calpain in diabetes-associated AF, fibrosis, and calcium handling dysfunction. METHODS DM-associated AF was induced in wild-type (WT) mice and in mice overexpressing the calpain inhibitor calpastatin (CAST-OE) using high-fat diet feeding followed by low-dose streptozotocin injection (75 mg/kg). DM and AF outcomes were assessed by measuring blood glucose levels, fibrosis, and AF susceptibility during transesophageal atrial pacing. Intracellular Ca2+ transients, spontaneous Ca2+ release events, and intracellular T-tubule membranes were measured by in situ confocal microscopy. RESULTS WT mice with DM had significant hyperglycemia, atrial fibrosis, and AF susceptibility with increased atrial myocyte calpain activity and Ca2+ handling dysfunction relative to control treated animals. CAST-OE mice with DM had a similar level of hyperglycemia as diabetic WT littermates but lacked significant atrial fibrosis and AF susceptibility. DM-induced atrial calpain activity and downregulation of the calpain substrate junctophilin-2 were prevented by CAST-OE. Atrial myocytes of diabetic CAST-OE mice exhibited improved T-tubule membrane organization, Ca2+ handling, and reduced spontaneous Ca2+ release events compared to littermate controls. CONCLUSION This study confirmed that DM promotes calpain activation, atrial fibrosis, and AF in mice. CAST-OE effectively inhibits DM-induced calpain activation and reduces atrial remodeling and AF incidence through improved intracellular Ca2+ homeostasis. Our results support calpain inhibition as a potential therapy for preventing and treating AF in DM patients.
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Affiliation(s)
- Qing Wang
- Department of Thoracic Surgery, Shanghai Chest Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China; The Collaborative Innovation Center, Jining Medical University, Jining, Shandong, China; Department of Internal Medicine, University of Iowa Carver College of Medicine, Iowa City, Iowa
| | - Jinxiang Yuan
- The Collaborative Innovation Center, Jining Medical University, Jining, Shandong, China; Department of Internal Medicine, University of Iowa Carver College of Medicine, Iowa City, Iowa
| | - Hua Shen
- Department of Internal Medicine, University of Iowa Carver College of Medicine, Iowa City, Iowa; Department of Cardiovascular Surgery, Chinese PLA General Hospital, Beijing, China
| | - Qi Zhu
- Department of Internal Medicine, University of Iowa Carver College of Medicine, Iowa City, Iowa; Department of Pharmacology, School of Pharmacy, Nantong University, Nantong, Jiangsu, China
| | - Biyi Chen
- Department of Internal Medicine, University of Iowa Carver College of Medicine, Iowa City, Iowa
| | - Jinxi Wang
- Department of Internal Medicine, University of Iowa Carver College of Medicine, Iowa City, Iowa
| | - Weizhong Zhu
- Department of Pharmacology, School of Pharmacy, Nantong University, Nantong, Jiangsu, China
| | - Mark A Yorek
- Department of Internal Medicine, University of Iowa Carver College of Medicine, Iowa City, Iowa; Department of Veterans Affairs Iowa City Health Care System, Iowa City, Iowa; Fraternal Order of Eagles Diabetes Research Center, University of Iowa, Iowa City, Iowa
| | - Duane D Hall
- Department of Internal Medicine, University of Iowa Carver College of Medicine, Iowa City, Iowa
| | - Zhinong Wang
- Department of Cardiothoracic Surgery, Changzheng Hospital, Naval Medical University, Shanghai, China.
| | - Long-Sheng Song
- Department of Internal Medicine, University of Iowa Carver College of Medicine, Iowa City, Iowa; Department of Veterans Affairs Iowa City Health Care System, Iowa City, Iowa; Fraternal Order of Eagles Diabetes Research Center, University of Iowa, Iowa City, Iowa.
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Zhao R, Teng X, Yang Y. Calpain as a Therapeutic Target for Hypoxic-Ischemic Encephalopathy. Mol Neurobiol 2024; 61:533-540. [PMID: 37642934 DOI: 10.1007/s12035-023-03594-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2023] [Accepted: 08/16/2023] [Indexed: 08/31/2023]
Abstract
Hypoxic-ischemic encephalopathy (HIE) is a complex pathophysiological process with multiple links and factors. It involves the interaction of inflammation, oxidative stress, and glucose metabolism, and results in acute and even long-term brain damage and impairment of brain function. Calpain is a family of Ca2+-dependent cysteine proteases that regulate cellular function. Calpain activation is involved in cerebral ischemic injury, and this involvement is achieved by the interaction among Ca2+, substrates, organelles, and multiple proteases in the neuronal necrosis and apoptosis pathways after cerebral ischemia. Many calpain inhibitors have been developed and tested in the biochemical and biomedical fields. This study reviewed the potential role of calpain in the treatment of HIE and related mechanism, providing new insights for future research on HIE.
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Affiliation(s)
- Ruiyang Zhao
- Department of Anesthesiology, Shengjing Hospital of China Medical University, Shenyang, 110004, Liaoning, China
| | - Xiufei Teng
- Department of Anesthesiology, Shengjing Hospital of China Medical University, Shenyang, 110004, Liaoning, China
| | - Yanchao Yang
- Department of Anesthesiology, Shengjing Hospital of China Medical University, Shenyang, 110004, Liaoning, China.
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Kotova IM, Pestereva NS, Traktirov DS, Absalyamova MT, Karpenko MN. Functions and distribution of calpain- calpastatin system components in brain during mammal ontogeny. Biochim Biophys Acta Gen Subj 2023; 1867:130345. [PMID: 36889447 DOI: 10.1016/j.bbagen.2023.130345] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2022] [Revised: 02/23/2023] [Accepted: 03/02/2023] [Indexed: 03/08/2023]
Abstract
Calpain and calpastatin are the key components of the calcium-dependent proteolytic system. Calpains are regulatory, calcium-dependent, cytoplasmic proteinases, and calpastatin is the endogenous inhibitor of calpains. Due to the correlation between changes in the activity of the calpain-calpastatin system in the brain and central nervous system (CNS) pathology states, this proteolytic system is a prime focus of research on CNS pathological processes, generally characterized by calpain activity upregulation. The present review aims to generalize existing data on cerebral calpain distribution and function through mammalian ontogenesis. Special attention is given to the most recent studies on the topic as more information on calpain-calpastatin system involvement in normal CNS development and functioning has become available. We also discuss data on calpain and calpastatin activity and production in different brain regions during ontogenesis as comparative analysis of these results in association with ontogeny processes can reveal brain regions and developmental stages with pronounced function of the calpain system.
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Affiliation(s)
- Irina M Kotova
- Institute of Experimental Medicine, St. Petersburg, Russia
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4
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Zhang K, Cremers MM, Wiedemann S, Poitz DM, Pfluecke C, Heinzel FR, Pieske B, Adams V, Schauer A, Winzer R, Strasser RH, Linke A, Quick S, Heidrich FM. Spatio-temporal regulation of calpain activity after experimental myocardial infarction in vivo. Biochem Biophys Rep 2021; 28:101162. [PMID: 34761128 PMCID: PMC8566776 DOI: 10.1016/j.bbrep.2021.101162] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2021] [Revised: 09/25/2021] [Accepted: 10/25/2021] [Indexed: 11/30/2022] Open
Abstract
Background Calpains are calcium activated cysteine proteases that play a pivotal role in the pathophysiology of cardiac remodeling. Methods Here, we performed left anterior descending coronary artery ligation in rats as a model for ischemic systolic heart failure and examined the time- and region-specific regulation of calpain-1 and calpain-2 in the left ventricular myocardium. Results Following anterior wall myocardial infarction, calpain activity was significantly increased restricted to the ischemic anterior area at days 1, 5 and 14. No changes in calpain activity at neither time point were detected in the borderzone and remote posterior area of the left ventricle. Of note, calpain activity in the infarcted anterior myocardium was regulated differentially in the acute vs. subacute and chronic phase. In the acute phase, calpain translocation to the plasma membrane and attenuation of the expression of its endogenous inhibitor, calpastatin, were identified as the driving forces. In the subacute and chronic phase, calpain activity was regulated at the level of protein expression that was shown to be essentially independent of transcriptional activity. Conclusions We conclude that myocardial infarction leads to a distinct calpain regulation pattern in the left ventricular myocardium that is region specific and time dependent. Considering the results from our previous studies, a spatio-temporal interaction between calpains and calcium dependent natriuretic peptide production in the infarcted myocardium is possible. General significance Our results shed more light in the differential regulation of calpain activity in the myocardium and might aid in the development of targeted post-infarct and/or heart failure therapeutics.
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Key Words
- AGTR1, angiotensin II receptor type 1
- Calcium
- Calpain
- Calpain-1
- Calpain-2
- Calpastatin
- Experimental myocardial infarction
- InsP3, inositol 1,4,5-trisphosphate
- InsP3R, inositol 1,4,5-trisphopshate receptor
- LAD, left anterior descending
- LVEDD, left ventricular enddiastolic diameter
- LVEF, left ventricular ejection fraction
- LVESD, left ventricular endsystolic diameter
- NF-ĸB, nuclear factor kappa B
- NT pro-ANP, N-terminal pro atrial natriuretic peptide
- SBDP, spectrin breakdown products
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Affiliation(s)
- Kun Zhang
- Department of Internal Medicine and Cardiology, Charité - Universitätsmedizin Berlin, Campus Virchow-Klinikum, Berlin, Germany.,Berlin Institute of Health (BIH), Berlin, Germany.,DZHK (German Centre for Cardiovascular Research), Partner Site Berlin, Berlin, Germany
| | - Melissa M Cremers
- Department of Internal Medicine and Cardiology, Herzzentrum Dresden at Technische Universität Dresden, Dresden, Germany
| | - Stephan Wiedemann
- Helios Klinikum Pirna, Department of Internal Medicine and Cardiology, Pirna, Germany
| | - David M Poitz
- Institute for Clinical Chemistry and Laboratory Medicine, Technische Universität Dresden, Dresden, Germany
| | - Christian Pfluecke
- Department of Internal Medicine and Cardiology, Herzzentrum Dresden at Technische Universität Dresden, Dresden, Germany
| | - Frank R Heinzel
- Department of Internal Medicine and Cardiology, Charité - Universitätsmedizin Berlin, Campus Virchow-Klinikum, Berlin, Germany.,DZHK (German Centre for Cardiovascular Research), Partner Site Berlin, Berlin, Germany
| | - Burkert Pieske
- Department of Internal Medicine and Cardiology, Charité - Universitätsmedizin Berlin, Campus Virchow-Klinikum, Berlin, Germany.,Berlin Institute of Health (BIH), Berlin, Germany.,DZHK (German Centre for Cardiovascular Research), Partner Site Berlin, Berlin, Germany.,Department of Internal Medicine and Cardiology, German Heart Center Berlin, Berlin, Germany
| | - Volker Adams
- Department of Internal Medicine and Cardiology, Herzzentrum Dresden at Technische Universität Dresden, Dresden, Germany
| | - Antje Schauer
- Department of Internal Medicine and Cardiology, Herzzentrum Dresden at Technische Universität Dresden, Dresden, Germany
| | - Robert Winzer
- Institute and Policlinic for Diagnostic and Interventional Radiology, University Hospital, Carl Gustav Carus University, Technische Universität Dresden, Dresden, Germany
| | - Ruth H Strasser
- Technische Universität Dresden, Medical Faculty, Dresden, Germany
| | - Axel Linke
- Department of Internal Medicine and Cardiology, Herzzentrum Dresden at Technische Universität Dresden, Dresden, Germany
| | - Silvio Quick
- Department of Internal Medicine and Cardiology, Herzzentrum Dresden at Technische Universität Dresden, Dresden, Germany
| | - Felix M Heidrich
- Department of Internal Medicine and Cardiology, Herzzentrum Dresden at Technische Universität Dresden, Dresden, Germany
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Coria MS, Pighin D, Grigioni G, Palma GA. Feeding strategies and ageing time alter calpain system proteins activities and meat quality of Braford steers. Anim Biosci 2021; 35:272-280. [PMID: 34696575 PMCID: PMC8738954 DOI: 10.5713/ab.21.0227] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2021] [Accepted: 09/11/2021] [Indexed: 12/04/2022] Open
Abstract
Objective The aim of this study was to evaluate the effect of ageing and feeding strategies on the calpain protease system and meat quality traits in Braford steers. Methods Thirty Braford steers were employed; 15 animals were supplemented with corn silage during finishing and 15 were kept only on pasture. Meat quality traits and calpain system protein activity were evaluated in longissimus thoracis et lumborum (LTL) steaks aged for 2, 7, 14, and 21 days. Results Aged meat showed higher pH and calcium content, while Warner Bratzler shear force (WBSF) decreased to day 21. No interaction between ageing and diet was seen for quality traits. Steers finished with corn silage showed higher values of water holding capacity, WBSF and free calcium, and lower values of pH and cooking loss. Calpain and calpastatin activities decreased with ageing. Finishing steers on pasture produced higher values of calpains and lower values of calpastatin activities. The higher values of calpain 1 activity were observed in muscles aged 2 days from pasture finished animals, and the lower activity of the inhibitor in the 21 days aged samples of the same group. Conclusion These results suggest a diet by ageing interaction in calpains and calpastatin and this interaction impact in Warner Bratzler Shear Force in Braford LTL muscle.
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Affiliation(s)
- Maria Sumampa Coria
- Animal Production and Reproduction Laboratory, NOA Institute of Bionanotechnology (INBIONATEC), Villa El Zanjón, Santiago del Estero, G4206XCP, Argentina.,Institute for the Agricultural Development of the Semiarid (INDEAS), Faculty of Agronomy and Agroindustry (FAyA), National University of Santiago del Estero (UNSE), Santiago del Estero, G4200ABT, Argentina.,National Council of Scientific and Technical Research (CONICET), Buenos Aires, C1033AAJ, Argentina
| | - Dario Pighin
- National Council of Scientific and Technical Research (CONICET), Buenos Aires, C1033AAJ, Argentina.,Food Technology Institute - Science and Technology Institute of Sustainable Food Systems, National Institute of Agricultural Technology (INTA) and National Council of Scientific and Technical Research (CONICET), Buenos Aires, C1033AAJ, Argentina.,Faculty of Agriculture and Food Sciences, Moron University, Morón, Buenos Aires, B1708JPD, Argentina
| | - Gabriela Grigioni
- National Council of Scientific and Technical Research (CONICET), Buenos Aires, C1033AAJ, Argentina.,Food Technology Institute - Science and Technology Institute of Sustainable Food Systems, National Institute of Agricultural Technology (INTA) and National Council of Scientific and Technical Research (CONICET), Buenos Aires, C1033AAJ, Argentina.,Faculty of Agriculture and Food Sciences, Moron University, Morón, Buenos Aires, B1708JPD, Argentina
| | - Gustavo Adolfo Palma
- Animal Production and Reproduction Laboratory, NOA Institute of Bionanotechnology (INBIONATEC), Villa El Zanjón, Santiago del Estero, G4206XCP, Argentina.,Institute for the Agricultural Development of the Semiarid (INDEAS), Faculty of Agronomy and Agroindustry (FAyA), National University of Santiago del Estero (UNSE), Santiago del Estero, G4200ABT, Argentina.,National Council of Scientific and Technical Research (CONICET), Buenos Aires, C1033AAJ, Argentina
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Chaosap C, Sivapirunthep P, Sitthigripong R, Tavitchasri P, Maduae S, Kusee T, Setakul J, Adeyemi K. Meat quality, post-mortem proteolytic enzymes, and myosin heavy chain isoforms of different Thai native cattle muscles. Anim Biosci 2021; 34:1514-1524. [PMID: 33902170 PMCID: PMC8495336 DOI: 10.5713/ab.20.0798] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2020] [Accepted: 04/10/2021] [Indexed: 11/27/2022] Open
Abstract
OBJECTIVE This study investigated the meat quality characteristics, endogenous proteolytic enzymes, collagen content, and myosin heavy chain (MyHC) isoforms of different muscles of Thai native cattle (TNC). METHODS Infraspinatus (IF), Longissimus thoracis (LT), and Supraspinatus (SS) muscles were obtained from two TNC breeds, Kho-Lan (KL, n = 7) and Kho-Isaan (KI, n = 7). The muscle and meat characteristics of TNC breeds and their relationship with MyHC expression were examined. RESULTS Three MyHC isoforms namely MyHC I, MyHC IIa, and MyHC IIx were detected in the muscles. The KL had higher (p<0.05) MyHC IIx than the KI. The IF muscle had higher (p<0.05) MyHC I compared to other muscles. The LT muscle had the least MyHC I. The LT had higher (p<0.05) MyHC IIx than the IF and SS muscles. The IF presented the least MyHC IIx. The KL had higher (p<0.05) lightness and moisture content and lower crude protein, redness, cooking loss, shear force, and calpastatin than the KI. The glycogen, total collagen, soluble collagen, crude protein, ash contents, and troponin T degradation product of IF and SS were lower (p<0.05) than that of LT. Ether extract in LT was lower (p<0.05) than that of IF and SS. The percentage of MyHC I, MyHC IIa, and MyHC IIx were significantly correlated with muscle and meat characteristics of TNC. CONCLUSION These results suggest that the differences in the MyHC isoforms may partly account for the variation in meat quality between breeds and among muscles of TNC.
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Affiliation(s)
- Chanporn Chaosap
- Department of Agricultural Education, Faculty of Industrial Education and Technology, King Mongkut's Institute of Technology Ladkrabang, Bangkok 10520, Thailand
| | - Panneepa Sivapirunthep
- Department of Agricultural Education, Faculty of Industrial Education and Technology, King Mongkut's Institute of Technology Ladkrabang, Bangkok 10520, Thailand
| | - Ronachai Sitthigripong
- Department of Animal Technology and Fishery, Faculty of Agricultural Technology, King Mongkut's Institute of Technology Ladkrabang, Bangkok 10520, Thailand
| | - Piyada Tavitchasri
- Department of Animal Science, King Mongkut's Institute of Technology Ladkrabang, Prince of Chumphon Campus, Chumphon 86160, Thailand
| | - Sabaiporn Maduae
- Department of Animal Technology and Fishery, Faculty of Agricultural Technology, King Mongkut's Institute of Technology Ladkrabang, Bangkok 10520, Thailand
| | - Tipyaporn Kusee
- Department of Animal Technology and Fishery, Faculty of Agricultural Technology, King Mongkut's Institute of Technology Ladkrabang, Bangkok 10520, Thailand
| | - Jutarat Setakul
- Department of Animal Technology and Fishery, Faculty of Agricultural Technology, King Mongkut's Institute of Technology Ladkrabang, Bangkok 10520, Thailand
| | - Kazeem Adeyemi
- Department of Animal Production, Faculty of Agriculture, University of Ilorin, PMB 1515, Ilorin, Nigeria
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Liu J, Xiao MZ. [Effects of electroacupuncture on motor function and calpain expression in rats with acute spinal cord injury]. Zhen Ci Yan Jiu 2020; 45:968-72. [PMID: 33415854 DOI: 10.13702/j.1000-0607.200102] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
OBJECTIVE To observe the effect of electroacupuncture (EA) on motor function, calpain and calpastatin expression in rats with spinal cord injury, so as to explore the mechanism of EA underlying improvement of acute spinal cord injury. METHODS Thirty male SD rats were randomly divided into sham operation group, model group and EA group, with 10 rats in each group. The acute moderate spinal cord injury model was established by using a NYU spinal cord impactor. EA was applied to "Jizhong"(GV6) and "Mingmen" (GV4) for 30 min, once daily for 28 d. The Basso, Beattie and Bresnahan (BBB) rating scale (0 to 21 points) was used to assess changes of locomotor function. Histopathological changes of the injured spinal cord were observed after sectioning and Nissl staining, and the expression levels of calpain1, calpain2 and calpastatin mRNA and protein in the spinal cord tissues were detected by using quantitative real-time PCR and Western blot, respectively. RESULTS The BBB score of the model group was significantly lower than that of the sham operation group (P<0.01), and was significantly higher in the EA group than that of the model group on 14th and 28th day (P<0.01). Compared with the sham operation group, the number of neurons in the model group decreased, and Nissl body stained cells decreased or even disappeared, which was evidently milder in the EA group. Compared with the sham operation group, the expression levels of calpain1 mRNA and protein in the spinal cord of the model group were significantly increased (P<0.01), while the expression levels of calpastatin mRNA and protein were significantly reduced (P<0.01). Following EA intervention, in contrast to the model group, the expression levels of calpain1 mRNA and protein in the EA group were significant down-regulated (P<0.01), calpastatin mRNA and protein expression levels were significantly up-regulated(P<0.01). There was no significant difference in calpain2 mRNA and protein expression among the 3 groups(P>0.05). CONCLUSION EA can improve the locomotor function of rats with spinal cord injury, which may be related to its effect in inhibiting the activity of calpain in the injured spinal cord.
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Affiliation(s)
- Jing Liu
- School of Rehabilitation Medicine, Wuhan Civil Affairs Vocational College, Wuhan 430079, China
| | - Ming-Zhong Xiao
- Obesity and Weight Management Center, Hubei Provincial Hospital of Traditional Chinese Medicine, Wuhan 430074
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Hyatt HW, Ozdemir M, Yoshihara T, Nguyen BL, Deminice R, Powers SK. Calpains play an essential role in mechanical ventilation-induced diaphragmatic weakness and mitochondrial dysfunction. Redox Biol 2020; 38:101802. [PMID: 33279868 PMCID: PMC7724197 DOI: 10.1016/j.redox.2020.101802] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2020] [Revised: 11/10/2020] [Accepted: 11/13/2020] [Indexed: 02/07/2023] Open
Abstract
Mechanical ventilation (MV) is a life-saving intervention for many critically ill patients. Unfortunately, an unintended consequence of prolonged MV is the rapid development of diaphragmatic atrophy and contractile dysfunction, known as ventilator-induced diaphragm dysfunction (VIDD). Although the mechanism(s) responsible for VIDD are not fully understood, abundant evidence reveals that oxidative stress leading to the activation of the major proteolytic systems (i.e., autophagy, ubiquitin-proteasome, caspase, and calpain) plays a dominant role. Of the proteolytic systems involved in VIDD, calpain has received limited experimental attention due to the longstanding dogma that calpain plays a minor role in inactivity-induced muscle atrophy. Guided by preliminary experiments, we tested the hypothesis that activation of calpains play an essential role in MV-induced oxidative stress and the development of VIDD. This premise was rigorously tested by transgene overexpression of calpastatin, an endogenous inhibitor of calpains. Animals with/without transfection of the calpastatin gene in diaphragm muscle fibers were exposed to 12 h of MV. Results confirmed that overexpression of calpastatin barred MV-induced activation of calpain in diaphragm fibers. Importantly, deterrence of calpain activation protected the diaphragm against MV-induced oxidative stress, fiber atrophy, and contractile dysfunction. Moreover, prevention of calpain activation in the diaphragm forstalled MV-induced mitochondrial dysfunction and prevented MV-induced activation of caspase-3 along with the transcription of muscle specific E3 ligases. Collectively, these results support the hypothesis that calpain activation plays an essential role in the early development of VIDD. Further, these findings provide the first direct evidence that calpain plays an important function in inactivity-induced mitochondrial dysfunction and oxidative stress in skeletal muscle fibers. Inhibiting calpains during mechanical ventilation protects the diaphragm. Calpains play an important role in muscle atrophy and contractile dysfunction. Calpain inhibition during mechanical ventilation prevents mitochondrial dysfunction. Calpain-cleaved molecules may play important signaling roles. Calpain activation cross-talks with other proteolytic systems.
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Affiliation(s)
- Hayden W Hyatt
- Department of Applied Physiology and Kinesiology, University of Florida, Gainesville, FL, USA.
| | - Mustafa Ozdemir
- Department of Applied Physiology and Kinesiology, University of Florida, Gainesville, FL, USA; Department of Exercise and Sport Sciences, Hacettepe University, Ankara, Turkey
| | - Toshinori Yoshihara
- Department of Applied Physiology and Kinesiology, University of Florida, Gainesville, FL, USA; Department of Exercise Physiology, Juntendo University, Tokyo, Japan
| | - Branden L Nguyen
- Department of Applied Physiology and Kinesiology, University of Florida, Gainesville, FL, USA
| | - Rafael Deminice
- Department of Applied Physiology and Kinesiology, University of Florida, Gainesville, FL, USA; Department of Physical Education, State University of Londrina, Londrina, Brazil
| | - Scott K Powers
- Department of Applied Physiology and Kinesiology, University of Florida, Gainesville, FL, USA
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Motter MM, Corva PM, Soria LA. Expression of calpastatin isoforms in three skeletal muscles of Angus steers and their association with fiber type composition and proteolytic potential. Meat Sci 2020; 171:108267. [PMID: 32745871 DOI: 10.1016/j.meatsci.2020.108267] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2020] [Revised: 07/24/2020] [Accepted: 07/24/2020] [Indexed: 10/23/2022]
Abstract
This study aimed to evaluate the expression of calpastatin (CAST) isoforms and their potential associations with fiber type composition (%RA), calpastatin activity (CA) and myofibril fragmentation index (MFI) in three muscles with known differences in tenderness (infraspinatus, triceps brachii and semitendinosus) of Angus steers. Expression of total CAST (CAST-T) and CAST isoforms I, II, III (2-3) and III (2-4) (including or not exon 3) was evaluated by qRT-PCR. CAST expression and CA were significantly higher and MFI was lower in semitendinosus, the muscle with the highest %RA of IIX fibers. Differential expression of isoforms defined the variability in CAST-T among muscles. Semitendinosus had a higher expression of isoforms II and III (2-3), but lower expression of III (2-4) compared to the other two muscles. Relative expression of isoforms II and III that were defined by promoter preference linked to alternative splicing, seem to be the main factors explaining differences in CAST expression and ultimately in MFI among muscles.
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Affiliation(s)
- Mariana M Motter
- Universidad de Buenos Aires, Facultad de Ciencias Veterinarias, Cátedra de Genética, Chorroarín 280 (1427), Buenos Aires, Argentina
| | - Pablo M Corva
- Universidad Nacional de Mar del Plata, Facultad de Ciencias Agrarias, Unidad Integrada Balcarce, Departamento de Producción Animal, CC276 (CP7620) Balcarce, Argentina
| | - Liliana A Soria
- Universidad de Buenos Aires, Facultad de Ciencias Veterinarias, Cátedra de Genética, Chorroarín 280 (1427), Buenos Aires, Argentina.
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10
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Chaosap C, Sitthigripong R, Sivapirunthep P, Pungsuk A, Adeyemi KD, Sazili AQ. Myosin heavy chain isoforms expression, calpain system and quality characteristics of different muscles in goats. Food Chem 2020; 321:126677. [PMID: 32247180 DOI: 10.1016/j.foodchem.2020.126677] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2018] [Revised: 03/20/2020] [Accepted: 03/21/2020] [Indexed: 12/22/2022]
Abstract
Myosin heavy chain (MHC) isoforms in goat muscles and their possible relationships with meat quality have not been fully elucidated. This study characterized the MHC isoforms in different caprine muscles using sodium dodecyl sulphate glycerol gel electrophoresis (SDS-GGE). The relationships between MHC isoforms, calpain systems and meat quality characteristics of different muscles in goats were examined. Four muscles, namely infraspinatus (IF), longissimus dorsi (LD), psoas major (PM) and supraspinatus (SS) were obtained from ten Boer crossbred bucks (7-10 months old; 26.5 ± 3.5 kg, BW). The percentages of MHC I, MHC IIa and MHC IIx in SS, IF, PM and LD were 47.2, 38.3, 32.1, 11.9; 28.0, 42.1, 33.0, 36.4; and 24.8, 19.6, 34.9 and 51.7, respectively. IF and SS had higher levels of calpastatin, total collagen and insoluble collagen contents than did PM and LD. PM had longer sarcomere length than did other muscles. LD had higher collagen solubility, troponin-T degradation products and glycogen content than did other muscles. These results infer that variable fiber-type composition could account partially for the differences in the physicochemical properties of goat muscles.
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Whitmore C, Pratt EPS, Anderson L, Bradley K, Latour SM, Hashmi MN, Urazaev AK, Weilbaecher R, Davie JK, Wang WH, Hockerman GH, Pond AL. The ERG1a potassium channel increases basal intracellular calcium concentration and calpain activity in skeletal muscle cells. Skelet Muscle 2020; 10:1. [PMID: 31948476 PMCID: PMC6966811 DOI: 10.1186/s13395-019-0220-3] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2019] [Accepted: 12/18/2019] [Indexed: 02/04/2023] Open
Abstract
Background Skeletal muscle atrophy is the net loss of muscle mass that results from an imbalance in protein synthesis and protein degradation. It occurs in response to several stimuli including disease, injury, starvation, and normal aging. Currently, there is no truly effective pharmacological therapy for atrophy; therefore, exploration of the mechanisms contributing to atrophy is essential because it will eventually lead to discovery of an effective therapeutic target. The ether-a-go-go related gene (ERG1A) K+ channel has been shown to contribute to atrophy by upregulating ubiquitin proteasome proteolysis in cachectic and unweighted mice and has also been implicated in calcium modulation in cancer cells. Methods We transduced C2C12 myotubes with either a human ERG1A encoded adenovirus or an appropriate control virus. We used fura-2 calcium indicator to measure intracellular calcium concentration and Calpain-Glo assay kits (ProMega) to measure calpain activity. Quantitative PCR was used to monitor gene expression and immunoblot evaluated protein abundances in cell lysates. Data were analyzed using either a Student’s t test or two-way ANOVAs and SAS software as indicated. Results Expression of human ERG1A in C2C12 myotubes increased basal intracellular calcium concentration 51.7% (p < 0.0001; n = 177). Further, it increased the combined activity of the calcium-activated cysteine proteases, calpain 1 and 2, by 31.9% (p < 0.08; n = 24); these are known to contribute to degradation of myofilaments. The increased calcium levels are likely a contributor to the increased calpain activity; however, the change in calpain activity may also be attributable to increased calpain protein abundance and/or a decrease in levels of the native calpain inhibitor, calpastatin. To explore the enhanced calpain activity further, we evaluated expression of calpain and calpastatin genes and observed no significant differences. There was no change in calpain 1 protein abundance; however, calpain 2 protein abundance decreased 40.7% (p < 0.05; n = 6). These changes do not contribute to an increase in calpain activity; however, we detected a 31.7% decrease (p < 0.05; n = 6) in calpastatin which could contribute to enhanced calpain activity. Conclusions Human ERG1A expression increases both intracellular calcium concentration and combined calpain 1 and 2 activity. The increased calpain activity is likely a result of the increased calcium levels and decreased calpastatin abundance.
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Affiliation(s)
- Clayton Whitmore
- Anatomy Department, Southern Illinois University School of Medicine, Carbondale, IL, 62902, USA
| | - Evan P S Pratt
- Medicinal Chemistry and Molecular Pharmacology, Purdue University, West Lafayette, IN, 47906, USA
| | - Luke Anderson
- Anatomy Department, Southern Illinois University School of Medicine, Carbondale, IL, 62902, USA
| | - Kevin Bradley
- Anatomy Department, Southern Illinois University School of Medicine, Carbondale, IL, 62902, USA
| | - Sawyer M Latour
- Doisey College of Health Sciences, Saint Louis University, St. Louis, MO, 63103, USA
| | - Mariam N Hashmi
- Anatomy Department, Southern Illinois University School of Medicine, Carbondale, IL, 62902, USA
| | - Albert K Urazaev
- School of Liberal Arts, Sciences and Education, Ivy Tech State college, Lafayette, IN, 47905, USA
| | - Rod Weilbaecher
- Biochemistry Department, Southern Illinois University School of Medicine, Carbondale, IL, 62902, USA
| | - Judith K Davie
- Biochemistry Department, Southern Illinois University School of Medicine, Carbondale, IL, 62902, USA
| | - Wen-Horng Wang
- Gene Editing Core Facility, Purdue University, West Lafayette, IN, 47906, USA
| | - Gregory H Hockerman
- Medicinal Chemistry and Molecular Pharmacology, Purdue University, West Lafayette, IN, 47906, USA
| | - Amber L Pond
- Anatomy Department, Southern Illinois University School of Medicine, Carbondale, IL, 62902, USA. .,Southern Illinois University, 1135 Lincoln Drive, Carbondale, IL, 62902, USA.
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12
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de Oliveira LG, Delgado EF, Steadham EM, Huff-Lonergan E, Lonergan SM. Association of calpain and calpastatin activity to postmortem myofibrillar protein degradation and sarcoplasmic proteome changes in bovine Longissiumus lumborum and Triceps brachii. Meat Sci 2019; 155:50-60. [PMID: 31075739 DOI: 10.1016/j.meatsci.2019.04.015] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2018] [Revised: 03/25/2019] [Accepted: 04/16/2019] [Indexed: 12/20/2022]
Abstract
The aim of this study was to determine the extent to which calpastatin (CASN) variants (based on two chromatographic peaks; CASN-P1 and CASN-P2) explain variation in μ-calpain autolysis, protein degradation, and changes in the sarcoplasmic proteome observed during postmortem aging of beef. The Longissimus lumborum (LL) and Triceps brachii (TB) muscles were obtained from six crossbred steers and samples prepared from day 0, 1 and 7 postmortem (pm). The decline of CASN activity during aging was due to decrease of CASN-P2 in both muscles. The CASN-P2:μ-calpain ratio at day 0 was greater for TB, which presented lesser calpain autolysis, myofibrillar protein degradation, and fewer sarcoplasmic proteome changes during aging. Changes in abundance of Heat shock protein 70 family in the sarcoplasmic fraction were positively associated to proteolysis during aging, with greater differences in LL.
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Affiliation(s)
| | | | - Edward M Steadham
- Animal Science Department, Iowa State University, Ames, IA, United States
| | | | - Steven M Lonergan
- Animal Science Department, Iowa State University, Ames, IA, United States
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13
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Zhang S, Deen S, Storr SJ, Yao A, Martin SG. Expression of Syk and MAP4 proteins in ovarian cancer. J Cancer Res Clin Oncol 2019; 145:909-19. [PMID: 30737623 DOI: 10.1007/s00432-019-02856-9] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2019] [Accepted: 02/01/2019] [Indexed: 01/05/2023]
Abstract
Purpose We have previously reported on the prognostic importance of the calpain family of proteins in ovarian cancer, especially calpain-2. Spleen tyrosine kinase (Syk) phosphorylates a variety of cytoskeletal proteins with studies suggesting potential interactions between Syk and conventional calpains. Microtubule-associated protein 4 (MAP4) has been reported to be regulated by Syk. Methods The current study assessed Syk and MAP4 protein expression, by immunohistochemistry on a tissue microarray comprised of cores from primary ovarian carcinomas (n = 575), to evaluate associations with patient clinical outcomes and other clinicopathological factors and sought to determine whether there were any correlations between the expression of Syk, MAP4 and the calpain system. Results MAP4 expression was significantly associated with ovarian cancer histological subtype (P < 0.001), stage (P = 0.001), grade (P < 0.001) and residual tumour (P = 0.005). Despite this finding, we found no significant association existing between MAP4 expression and overall survival. Syk expression was also found significantly associated with histological subtype (P < 0.001). Syk seems to play a contradictory role with respect to tumour progression: low cytoplasmic Syk expression was significantly associated with low stage (P = 0.013), and low nuclear Syk expression with chemo-resistance in patients treated with taxane-containing therapy (P = 0.006). Interestingly, despite the lack of association in the whole cohort, high nuclear Syk expression was significantly associated with better overall survival in certain subgroups (P = 0.001). Conclusions The current study indicates a lack of correlation between calpain-2 expression and Syk and MAP4. Syk, MAP4 and calpain-1 appeared to significantly correlate with each other in the whole cohort, with calpain-1 being more highly associated with MAP4 and Syk in mucinous carcinomas. Overall, the current results suggest that Syk, MAP4, and calpain-1 expression are correlated with each other and these proteins may be involved in early stages of tumour spread. Electronic supplementary material The online version of this article (10.1007/s00432-019-02856-9) contains supplementary material, which is available to authorized users.
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Averna M, De Tullio R. Immunoblotting for Calpastatin Expression. Methods Mol Biol 2019; 1915:195-206. [PMID: 30617805 DOI: 10.1007/978-1-4939-8988-1_15] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Immunoblotting is a procedure routinely used to analyze calpastatin expression. However, immunoblotting alone may not be adequate for this task, since calpastatin isoforms can vary by tissue, can be modified by partial digestion, and can undergo posttranslational modifications. Here we describe a method for more precise evaluation of calpastatin expression by combining immunoblot analysis with an assay for the inhibitory activity of a single calpastatin species isolated by SDS-PAGE and protein elution from the gel.
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Affiliation(s)
- Monica Averna
- Department of Experimental Medicine (DIMES)-Biochemistry Section, University of Genova, Genova, Italy.
| | - Roberta De Tullio
- Department of Experimental Medicine (DIMES)-Biochemistry Section, University of Genova, Genova, Italy
- Centre of Excellence for Biomedical Research (CEBR), University of Genova, Genova, Italy
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15
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Abstract
Purification and separation of calpains and calpastatin are used to determine the individual activities of calpain-1 and calpain-2 and their inhibitor calpastatin. We discuss here a method to purify these enzymes using dialysis followed by separation using anion-exchange chromatography coupled with gradient elution. Swollen DEAE Sephacel is used as the column matrix in this method. Calpastatin and both domains of calpain are weakly basic molecules that effectively bind with the DEAE Sephacel and separate well using a stepwise, increasing gradient of NaCl to elute the proteins. Calpastatin binds most weakly with the column matrix, so it elutes first, followed by calpain-1 and, finally, calpain-2.
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Affiliation(s)
- Ashim Kumar Biswas
- Division of Post-Harvest Technology, ICAR-Central Avian Research Institute, Bareilly, Uttar Pradesh, India.
| | - Samarth Tandon
- Division of Post-Harvest Technology, ICAR-Central Avian Research Institute, Bareilly, Uttar Pradesh, India
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16
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Zhang S, Deen S, Storr SJ, Chondrou PS, Nicholls H, Yao A, Rungsakaolert P, Martin SG. Calpain system protein expression and activity in ovarian cancer. J Cancer Res Clin Oncol 2019; 145:345-61. [PMID: 30448882 DOI: 10.1007/s00432-018-2794-2] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2018] [Accepted: 11/12/2018] [Indexed: 01/06/2023]
Abstract
Purpose Expression of members of the calpain system are associated with clinical outcome of patients with, amongst others, breast and ovarian cancers, with calpain-2 expression in ovarian cancer being implicated in chemo-resistance and survival. This study aimed, using a large patient cohort and in vitro models, to verify its importance and further investigate the role in ovarian cancer chemoresponse. Methods Calpain-1, calpain-2, calpain-4 and calpastatin expression were evaluated in primary ovarian carcinomas (n = 575) by immunohistochemistry. Protein expression was assessed, via western blotting, in five ovarian cancer cell lines with various sensitivities towards cisplatin/carboplatin. In vitro calpain activity was inhibited by calpeptin treatment to assess changes in platinum sensitivity by proliferation assay, with expression of genes associated with epithelial–mesenchymal transition being examined by RT2 Profiler™ PCR Array. Results The current study confirmed previous data that high calpain-2 expression is associated with poor overall survival (P = 0.026) and that calpain-1 was not associated with overall survival or progression-free survival. Low expression of calpastatin (P = 0.010) and calpain-4 (P = 0.003) were also associated with adverse survival. Such prognostic associations do not seem to be linked with altered tumour sensitivity towards platinum-based chemotherapy. Interestingly, low calpain-1 expression was more frequent in patients with confined tumours (stage 1) (χ2 = 11.310, df = 1, P = 0.001). Calpain and calpastatin expression varied among ovarian cancer cell lines yet their expression levels were similar between chemo-sensitive cells and resistant counterparts. Moreover, calpeptin treatment did not alter cellular response to platinum-based chemotherapy or epithelial–mesenchymal transition-related gene expression. Conclusions The conventional calpains and calpastatin have been confirmed to play an important role in ovarian cancer; however, the precise mechanisms whereby they exert effects remain to be elucidated. Electronic supplementary material The online version of this article (10.1007/s00432-018-2794-2) contains supplementary material, which is available to authorized users.
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Weber JJ, Kloock SJ, Nagel M, Ortiz-Rios MM, Hofmann J, Riess O, Nguyen HP. Calpastatin ablation aggravates the molecular phenotype in cell and animal models of Huntington disease. Neuropharmacology 2018; 133:94-106. [PMID: 29355642 DOI: 10.1016/j.neuropharm.2018.01.022] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2017] [Revised: 12/21/2017] [Accepted: 01/16/2018] [Indexed: 12/15/2022]
Abstract
Deciphering the molecular pathology of Huntington disease is of particular importance, not only for a better understanding of this neurodegenerative disease, but also to identify potential therapeutic targets. The polyglutamine-expanded disease protein huntingtin was shown to undergo proteolysis, which results in the accumulation of toxic and aggregation-prone fragments. Amongst several classes of proteolytic enzymes responsible for huntingtin processing, the group of calcium-activated calpains has been found to be a significant mediator of the disease protein toxicity. To confirm the impact of calpain-mediated huntingtin cleavage in Huntington disease, we analysed the effect of depleting or overexpressing the endogenous calpain inhibitor calpastatin in HEK293T cells transfected with wild-type or polyglutamine-expanded huntingtin. Moreover, we crossbred huntingtin knock-in mice with calpastatin knockout animals to assess its effect not only on huntingtin cleavage and aggregation but also additional molecular markers. We demonstrated that a reduced or ablated expression of calpastatin triggers calpain overactivation and a consequently increased mutant huntingtin cleavage in cells and in vivo. These alterations were accompanied by an elevated formation of predominantly cytoplasmic huntingtin aggregates. On the other hand, overexpression of calpastatin in cells attenuated huntingtin fragmentation and aggregation. In addition, we observed an enhanced cleavage of DARPP-32, p35 and synapsin-1 in neuronal tissue upon calpain overactivation. Our results corroborate the important role of calpains in the molecular pathogenesis of Huntington disease and endorse targeting these proteolytic enzymes as a therapeutic approach.
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Affiliation(s)
- Jonasz Jeremiasz Weber
- Institute of Medical Genetics and Applied Genomics, University of Tübingen, Calwerstraße 7, 72076, Tübingen, Germany; Centre for Rare Diseases, University of Tübingen, Calwerstraße 7, 72076, Tübingen, Germany.
| | - Simon Johannes Kloock
- Institute of Medical Genetics and Applied Genomics, University of Tübingen, Calwerstraße 7, 72076, Tübingen, Germany; Centre for Rare Diseases, University of Tübingen, Calwerstraße 7, 72076, Tübingen, Germany.
| | - Maike Nagel
- Institute of Medical Genetics and Applied Genomics, University of Tübingen, Calwerstraße 7, 72076, Tübingen, Germany; Centre for Rare Diseases, University of Tübingen, Calwerstraße 7, 72076, Tübingen, Germany.
| | - Midea Malena Ortiz-Rios
- Institute of Medical Genetics and Applied Genomics, University of Tübingen, Calwerstraße 7, 72076, Tübingen, Germany; Centre for Rare Diseases, University of Tübingen, Calwerstraße 7, 72076, Tübingen, Germany.
| | - Julian Hofmann
- Institute of Medical Genetics and Applied Genomics, University of Tübingen, Calwerstraße 7, 72076, Tübingen, Germany; Centre for Rare Diseases, University of Tübingen, Calwerstraße 7, 72076, Tübingen, Germany.
| | - Olaf Riess
- Institute of Medical Genetics and Applied Genomics, University of Tübingen, Calwerstraße 7, 72076, Tübingen, Germany; Centre for Rare Diseases, University of Tübingen, Calwerstraße 7, 72076, Tübingen, Germany.
| | - Huu Phuc Nguyen
- Institute of Medical Genetics and Applied Genomics, University of Tübingen, Calwerstraße 7, 72076, Tübingen, Germany; Centre for Rare Diseases, University of Tübingen, Calwerstraße 7, 72076, Tübingen, Germany.
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18
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Abstract
The proteins which bind to calmodulin in a Ca2+-dependent and reversible manner are known as calmodulin-binding proteins. These proteins are involved in a multitude of processes in which Ca2+ and calmodulin play crucial roles. Our group elucidated the mechanism and importance of these proteins in normal and diseased conditions. Various calmodulin-binding proteins were discovered and purified from bovine tissue including a heat stable calmodulin-binding protein 70, calmodulin-dependent protein kinase VI and a high molecular weight calmodulin-binding protein (HMWCaMBP). We observed a complex interplay occurs between these and other Ca2+ and calmodulin-binding proteins during cardiac ischemia and reperfusion. Purified cardiac HMWCaMBP is a homolog form of calpastatin and an inhibitor of the Ca2+-activated cysteine proteases, calpains and therefore can have cardioprotective role in ischemic conditions. Calcineurin is a Ca2+ and calmodulin-dependent serine/threonine protein phosphatase showed increased phosphatase activity in ischemic heart through its direct interaction with Hsp70 and expression of calcineurin following ischemia suggests self-repair and favorable survival outcomes. Calcineurin was also found to be present in other tissues including the eye; where its expression and calcineurin phosphatase activity varied. In neurons, calcineurin may play a key role in initiating apoptosis-related pathways especially in epilepsy. In colorectal cancer we demonstrated high calcineurin phosphatase activity and simultaneous overexpression of calcineurin. The impact of calcineurin signaling on neuronal apoptosis in epilepsy and its use as a diagnostic marker for colorectal cancer requires in-depth study.
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Affiliation(s)
- Rajendra K Sharma
- Department of Pathology & Laboratory Medicine, College of Medicine, University of Saskatchewan, 107 Wiggins Road, Saskatoon S7N 5E5, Canada.
| | - Sreejit Parameswaran
- Department of Pathology & Laboratory Medicine, College of Medicine, University of Saskatchewan, 107 Wiggins Road, Saskatoon S7N 5E5, Canada
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Li S, Ma J, Li JB, Lacefield JC, Jones DL, Peng TQ, Wei M. Over-expression of calpastatin attenuates myocardial injury following myocardial infarction by inhibiting endoplasmic reticulum stress. J Thorac Dis 2018; 10:5283-5297. [PMID: 30416776 DOI: 10.21037/jtd.2018.08.133] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Background Ischemic heart injury activates calpains and endoplasmic reticulum (ER) stress in cardiomyocytes. This study investigated whether over-expression of calpastatin, an endogenous calpain inhibitor, protects the heart against myocardial infarction (MI) by inhibiting ER stress. Methods Mice over-expressing calpastatin (Tg-CAST) and littermate wild type (WT) mice were divided into four groups: WT-sham, Tg-CAST-sham, WT-MI, and Tg-CAST-MI, respectively. WT-sham and Tg-CAST-sham mice showed similar cardiac function at baseline. MI for 7 days impaired cardiac function in WT-MI mice, which was ameliorated in Tg-CAST-MI mice. Results Tg-CAST-MI mice exhibited significantly decreased diameter of the left ventricular cavity, scar area, and cardiac cell death compared to WT-MI mice. WT-MI mice had higher cardiac expression of C/EBP homologous protein (CHOP) and BIP, indicators of ER stress, compared to WT-sham mice, indicative of MI-induced ER stress. This increase was abolished in Tg-CAST-MI hearts. Furthermore, administration of tauroursodeoxycholic acid, an inhibitor of ER stress, reduced MI-induced expression of CHOP and BIP, scar area, and myocardial dysfunction. In an in vitro model of oxidative stress, H2O2 stimulation of H9c2 cardiomyoblasts induced calpain activation, CHOP expression, and cell death, all of which were prevented by the calpain inhibitor PD150606, as well as CHOP silencing. Conclusions Over-expression of calpastatin ameliorates MI-induced myocardial injury in mice. These protective effects of calpastatin are partially achieved through suppression of the ER stress/CHOP pathway.
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Affiliation(s)
- Shuai Li
- Department of Cardiology, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai 200233, China.,Critical Illness Research, Lawson Health Research Institute, London Health Sciences Centre, London, Ontario, Canada.,Department of Medicine, Western University, London, Ontario, Canada.,Department of Pathology, Western University, London, Ontario, Canada
| | - Jian Ma
- Department of Cardiology, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai 200233, China
| | - Jing-Bo Li
- Department of Cardiology, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai 200233, China
| | - James C Lacefield
- Department of Electrical & Computer Engineering, Western University, London, Ontario, Canada.,Department of Medical Biophysics, Western University, London, Ontario, Canada.,Robarts Research Institute, Western University, London, Ontario, Canada
| | - Douglas L Jones
- Critical Illness Research, Lawson Health Research Institute, London Health Sciences Centre, London, Ontario, Canada.,Department of Medicine, Western University, London, Ontario, Canada.,Robarts Research Institute, Western University, London, Ontario, Canada.,Department of Physiology & Pharmacology, Western University, London, Ontario, Canada
| | - Tian-Qing Peng
- Critical Illness Research, Lawson Health Research Institute, London Health Sciences Centre, London, Ontario, Canada.,Department of Medicine, Western University, London, Ontario, Canada.,Department of Pathology, Western University, London, Ontario, Canada
| | - Meng Wei
- Department of Cardiology, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai 200233, China
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20
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Kanzaki K, Watanabe D, Aibara C, Kawakami Y, Yamada T, Takahashi Y, Wada M. Ingestion of soy protein isolate attenuates eccentric contraction-induced force depression and muscle proteolysis via inhibition of calpain-1 activation in rat fast-twitch skeletal muscle. Nutrition 2018; 58:23-29. [PMID: 30273822 DOI: 10.1016/j.nut.2018.06.025] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2018] [Revised: 06/13/2018] [Accepted: 06/24/2018] [Indexed: 11/17/2022]
Abstract
OBJECTIVE Eccentric contraction (ECC) is a contraction in which skeletal muscles are stretched while contracting. The aim of this study was to determine how ingestion of soy protein isolate (SPI) or animal-based proteins affect force deficit, calpain activation, and proteolysis of calcium ion (Ca2+)-regulatory proteins in rat fast-twitch muscles subjected to ECC. METHODS In the first experiment, male Wistar rats were randomly assigned to a control and an SPI group, which were fed a 20% casein and a 20% SPI diet, respectively, for 28 d before the ECC protocol. Anterior crural muscles underwent 200 repeated ECCs and were excised 3 d later. In the second experiment, half of the SPI rats were given water containing NG-nitro-l-arginine-methyl ester (L-NAME), an inhibitor of nitric oxide synthase, for 3 d of recovery after ECC. RESULTS SPI ingestion attenuated ECC-induced force deficit, proteolysis of Ca2+-regulatory proteins, and autolysis of calpain-1. Co-ingestion of L-NAME inhibited SPI-associated increases in nitrite and nitrate levels and negated the force recovery effects of SPI. CONCLUSION These results suggest that SPI ingestion inhibits ECC-elicited force deficit and proteolysis of Ca2+ regulatory proteins, which is caused by inhibited activation of calpain-1 via increased nitric oxide production.
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Affiliation(s)
- Keita Kanzaki
- Department of Clinical Nutrition, Faculty of Health Science and Technology, Kawasaki University of Medical Welfare, Okayama, Japan
| | - Daiki Watanabe
- Graduate School of Integrated Arts and Sciences, Hiroshima University, Hiroshima, Japan; Japan Society for the Promotion of Science, Tokyo, Japan
| | - Chihiro Aibara
- Graduate School of Integrated Arts and Sciences, Hiroshima University, Hiroshima, Japan
| | - Yuki Kawakami
- Department of Nutritional Science, Faculty of Health and Welfare Science, Okayama Prefectural University, Okayama, Japan
| | - Takashi Yamada
- Graduate School of Health Sciences, Sapporo Medical University, Hokkaido, Japan
| | - Yoshitaka Takahashi
- Department of Nutritional Science, Faculty of Health and Welfare Science, Okayama Prefectural University, Okayama, Japan
| | - Masanobu Wada
- Graduate School of Integrated Arts and Sciences, Hiroshima University, Hiroshima, Japan.
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Abstract
Chronic vascular diseases such as atherosclerosis, aneurysms, diabetic angiopathy/retinopathy as well as fibrotic and proliferative vascular diseases are generally complicated by the progression of degenerative insults, which are characterized by endothelial dysfunction, apoptotic/necrotic cell death in vascular/immune cells, remodeling of extracellular matrix or breakdown of elastic lamella. Increasing evidence suggests that dysfunctional calpain proteolytic systems and defective calpain protein metabolism in blood vessels contribute to degenerative disorders. In vascular endothelial cells, the overactivation of conventional calpains consisting of calpain-1 and -2 isozymes can lead to the disorganization of cell-cell junctions, dysfunction of nitric oxide synthase, sensitization of Janus kinase/signal transducer and activator of transcription cascades and depletion of prostaglandin I2, which contributes to degenerative disorders. In addition to endothelial cell dysfunctions, calpain overactivation results in inflammatory insults in macrophages and excessive fibrogenic/proliferative signaling in vascular smooth muscle cells. Moreover, calpain-6, a non-proteolytic unconventional calpain, is involved in the conversion of macrophages to a pro-atherogenic phenotype, leading to the pinocytotic deposition of low-density lipoprotein cholesterol in the cells. Here, we discuss the recent progress that has been made in our understanding of how calpain contributes to degenerative vascular disorders.
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Affiliation(s)
- Takuro Miyazaki
- Department of Biochemistry, Showa University School of Medicine
| | - Akira Miyazaki
- Department of Biochemistry, Showa University School of Medicine
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22
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Parameswaran S, Sharma RK. Expression of calcineurin, calpastatin and heat shock proteins during ischemia and reperfusion. Biochem Biophys Rep 2015; 4:207-214. [PMID: 30338302 PMCID: PMC6189699 DOI: 10.1016/j.bbrep.2015.09.016] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2015] [Revised: 09/15/2015] [Accepted: 09/21/2015] [Indexed: 12/24/2022] Open
Abstract
Objective Calcineurin (CaN) interacts with calpains (Calpn) and causes cellular damage eventually leading to cell death. Calpastatin (Calp) is a specific Calpn inhibitor, along with CaN stimulation has been implicated in reduced cell death and self-repair. Molecular chaperones, heat shock proteins (Hsp70 and Hsp90) acts as regulators in Calpn signaling. This study aims to elucidate the role of CaN, Calp and Hsps during induced ischemia and reperfusion in primary cardiomyocyte cultures (murine). Methods and results Protein expression was analyzed concurrently with viability using flow cytometry (FACS) in ischemia- and reperfusion-induced murine cardiomyocyte cultures. The expression of Hsp70 and Hsp90, both being molecular chaperones, increased during ischemia with a concurrent increase in death of cells expressing these proteins. The relative expression of Hsp70 and Hsp90 during ischemia with respect to CaN was enhanced in comparison to Calp. Reperfusion slightly decreased the number of cells expressing these chaperones. There was no increase in death of cells co-expressing Hsp70 and Hsp90 along with CaN and Calp. CaN expression peaked during ischemia and subsequent reperfusion reduced its expression and cell death. Calp expression increased both during ischemia and subsequent reperfusion but cell death decreased during reperfusion. Conclusion The present study adds to the existing knowledge that Hsp70, Hsp90, CaN and Calp interact with each other and play significant role in cardio protection. Differential expression of calcineurin and calpastatin during ischemia and reperfusion. Enhanced ischemia induced cell death in cells expressing Hsp70 and Hsp90. Cardio protective role of calcineurin, calpastatin, Hsp70 and Hsp90.
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Key Words
- CaN, calcineurin
- Calcineurin
- Calp, Calpastatin
- Calpastatin
- Calpn, calpain
- FACS, flow cytometry
- FITC, fluorescein isothiocyanate
- HMWCaMBP, high molecular weight calmodulin-binding protein
- Heat shock proteins
- I/R, Ischemia and Reperfusion
- Ischemia
- NDB, nutrient deficient buffer
- NMCC, primary neonatal mouse cardiomyocyte culture
- PE, R-phycoerythrin
- Primary cardiomyocyte culture
- Reperfusion
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Samantaray S, Knaryan VH, Patel KS, Mulholland PJ, Becker HC, Banik NL. Chronic intermittent ethanol induced axon and myelin degeneration is attenuated by calpain inhibition. Brain Res 2015; 1622:7-21. [PMID: 26100335 DOI: 10.1016/j.brainres.2015.06.014] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2014] [Revised: 04/17/2015] [Accepted: 06/09/2015] [Indexed: 11/19/2022]
Abstract
Chronic alcohol consumption causes multifaceted damage to the central nervous system (CNS), underlying mechanisms of which are gradually being unraveled. In our previous studies, activation of calpain, a calcium-activated neutral protease has been found to cause detrimental alterations in spinal motor neurons following ethanol (EtOH) exposure in vitro. However, it is not known whether calpain plays a pivotal role in chronic EtOH exposure-induced structural damage to CNS in vivo. To test the possible involvement of calpain in EtOH-associated neurodegenerative mechanisms the present investigation was conducted in a well-established mouse model of alcohol dependence - chronic intermittent EtOH (CIE) exposure and withdrawal. Our studies indicated significant loss of axonal proteins (neurofilament light and heavy, 50-60%), myelin proteins (myelin basic protein, 20-40% proteolipid protein, 25%) and enzyme (2', 3'-cyclic-nucleotide 3'-phosphodiesterase, 21-55%) following CIE in multiple regions of brain including hippocampus, corpus callosum, cerebellum, and importantly in spinal cord. These CIE-induced deleterious effects escalated after withdrawal in each CNS region tested. Increased expression and activity of calpain along with enhanced ratio of active calpain to calpastatin (sole endogenous inhibitor) was observed after withdrawal compared to EtOH exposure. Pharmacological inhibition of calpain with calpeptin (25 μg/kg) prior to each EtOH vapor inhalation significantly attenuated damage to axons and myelin as demonstrated by immuno-profiles of axonal and myelin proteins, and Luxol Fast Blue staining. Calpain inhibition significantly protected the ultrastructural integrity of axons and myelin compared to control as confirmed by electron microscopy. Together, these findings confirm CIE exposure and withdrawal induced structural alterations in axons and myelin, predominantly after withdrawal and corroborate calpain inhibition as a potential protective strategy against EtOH associated CNS degeneration.
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Affiliation(s)
- Supriti Samantaray
- Department of Neurology and Neurosurgery, Medical University of South Carolina, MSC 606, Charleston, SC, USA.
| | - Varduhi H Knaryan
- Department of Neurology and Neurosurgery, Medical University of South Carolina, MSC 606, Charleston, SC, USA.
| | - Kaushal S Patel
- Department of Neurology and Neurosurgery, Medical University of South Carolina, MSC 606, Charleston, SC, USA.
| | - Patrick J Mulholland
- Department of Neurosciences, Medical University of South Carolina, Charleston, SC, USA; Charleston Alcohol Research Center, Department of Psychiatry and Behavioral Sciences, Charleston, SC, USA.
| | - Howard C Becker
- Department of Neurosciences, Medical University of South Carolina, Charleston, SC, USA; Charleston Alcohol Research Center, Department of Psychiatry and Behavioral Sciences, Charleston, SC, USA; Department of Veterans Affairs, Ralph H. Johnson Medical Center, Charleston, SC, USA.
| | - Naren L Banik
- Department of Neurology and Neurosurgery, Medical University of South Carolina, MSC 606, Charleston, SC, USA; Department of Veterans Affairs, Ralph H. Johnson Medical Center, Charleston, SC, USA.
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Kim EY, Zhang Y, Ye B, Segura AM, Beketaev I, Xi Y, Yu W, Chang J, Li F, Wang J. Involvement of activated SUMO-2 conjugation in cardiomyopathy. Biochim Biophys Acta Mol Basis Dis 2015; 1852:1388-99. [PMID: 25857621 DOI: 10.1016/j.bbadis.2015.03.013] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2014] [Revised: 03/24/2015] [Accepted: 03/30/2015] [Indexed: 01/14/2023]
Abstract
Sumoylation is a posttranslational modification that regulates a wide spectrum of cellular activities. Cardiomyopathy is the leading cause of heart failure. Whether sumoylation, particularly SUMO-2/3 conjugation, is involved in cardiomyopathy has not been investigated. We report here that SUMO-2/3 conjugation was elevated in the human failing hearts, and we investigated the impact of increased SUMO-2 conjugation on heart function by using the gain-of-function approach in mice, in which cardiac specific expression of constitutively active SUMO-2 was governed by alpha myosin heavy chain promoter (MHC-SUMO-2 transgenic, SUMO-2-Tg). Four of five independent SUMO-2-Tg mouse lines exhibited cardiomyopathy with various severities, ranging from acute heart failure leading to early death to the development of chronic cardiomyopathy with aging. We further revealed that SUMO-2 directly regulated apoptotic process by at least partially targeting calpain 2 and its natural inhibitor calpastatin. SUMO conjugation to calpain 2 promoted its enzymatic activity, and SUMO attachment to calpastatin mainly promoted its turnover and altered its subcellular distribution. Thus, enhanced SUMO-2 conjugation led to increased apoptosis and played a pathogenic role in the development of cardiomyopathy and heart failure.
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Affiliation(s)
- Eun Young Kim
- Center for Stem Cell Engineering, Department of Basic Research Laboratories, Texas Heart Institute at St. Luke's Episcopal Hospital, 6770 Bertner Avenue, MC 2-255, Houston, TX 77030, USA
| | - Yi Zhang
- In Vitro Fertilization Center, Affiliated Hospital of Hainan Medical University, 31 Long-Hua Road, Haikou, Hainan 570102, People's Republic of China
| | - Bo Ye
- Department of Pathology and Laboratory Medicine, University of Rochester Medical Center, 601 Elmwood Avenue, Box 626, Rochester, NY 14642, USA
| | - Ana Maria Segura
- Department of Cardiac Pathology, Texas Heart Institute at St. Luke's Episcopal Hospital, 6770 Bertner Avenue, MC 2-255, Houston, TX 77030, USA
| | - Ilimbek Beketaev
- Center for Stem Cell Engineering, Department of Basic Research Laboratories, Texas Heart Institute at St. Luke's Episcopal Hospital, 6770 Bertner Avenue, MC 2-255, Houston, TX 77030, USA
| | - Yutao Xi
- Laboratory of Electrophysiology, Department of Basic Research Laboratories, Texas Heart Institute at St. Luke's Episcopal Hospital, 6770 Bertner Avenue, MC 2-255, Houston, TX 77030, USA
| | - Wei Yu
- Department of Biochemistry and Molecular Biology, University of Houston, Houston, TX 77204, USA
| | - Jiang Chang
- Center for Molecular Development and Disease, Institute of Biosciences and Technology, Texas A&M Health Science Center, 2121 W. Holcombe Blvd., Houston, TX 77030, USA
| | - Faqian Li
- Department of Pathology and Laboratory Medicine, University of Rochester Medical Center, 601 Elmwood Avenue, Box 626, Rochester, NY 14642, USA
| | - Jun Wang
- Center for Stem Cell Engineering, Department of Basic Research Laboratories, Texas Heart Institute at St. Luke's Episcopal Hospital, 6770 Bertner Avenue, MC 2-255, Houston, TX 77030, USA.
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Ropka-Molik K, Bereta A, Tyra M, Różycki M, Piórkowska K, Szyndler-Nędza M, Szmatoła T. Association of calpastatin gene polymorphisms and meat quality traits in pig. Meat Sci 2014; 97:143-50. [PMID: 24583321 DOI: 10.1016/j.meatsci.2014.01.021] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2013] [Revised: 12/30/2013] [Accepted: 01/30/2014] [Indexed: 11/20/2022]
Abstract
Calpastatin is associated with the rate of post mortem degradation of structural proteins due to the regulation of calpain activity. In the present research, the associations between polymorphisms within 6th intron of porcine CAST gene and several meat quality traits were analyzed. The CAST gene polymorphisms affected meat colour, pH, water holding-capacity (WHC) and texture parameters (toughness, firmness, cohesiveness, chewiness, and resilience) measured in longissimus dorsi and semimembranosus muscles. The analysis performed on the most numerous breeds maintained in Poland, suggested that the most interesting polymorphisms were CAST/HpaII and CAST/RsaI, which had the greatest effect on WHC regardless of the breed analyzed and had an effect on meat pH, firmness and toughness for most breeds. Interestingly, for almost all breeds, the significant effect of both mutations on intramuscular fat content (IMF) was detected. The provided data confirmed the use of CAST gene as a genetic marker in breeding programmes which allows performing a selection focussed on improving the quality of pork.
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26
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Sun W, Feng R, Hu H, Guo F, Gao Q, Shao D, Yin D, Wang H, Sun X, Zhao M, Minobe E, Sun Y, Jiao G, Kameyama M, Hao L. The Ca(2+)-dependent interaction of calpastatin domain L with the C-terminal tail of the Cav1.2 channel. FEBS Lett 2014; 588:665-71. [PMID: 24462690 DOI: 10.1016/j.febslet.2014.01.019] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2013] [Revised: 12/24/2013] [Accepted: 01/05/2014] [Indexed: 11/30/2022]
Abstract
To demonstrate the interaction of calpastatin (CS) domain L (CSL) with Cav1.2 channel, we investigated the binding of CSL with various C-terminus-derived peptides at≈free, 100 nM, 10 μM, and 1mM Ca(2+) by using the GST pull-down assay method. Besides binding with the IQ motif, CSL was also found to bind with the PreIQ motif. With increasing [Ca(2+)], the affinity of the CSL-IQ interaction gradually decreased, and the affinity of the CSL-PreIQ binding gradually increased. The results suggest that CSL may bind with both the IQ and PreIQ motifs of the Cav1.2 channel in different Ca(2+)-dependent manners.
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Affiliation(s)
- Wei Sun
- Department of Pharmaceutical Toxicology, School of Pharmacy, China Medical University, Shenyang 110001, China
| | - Rui Feng
- Department of Pharmaceutical Toxicology, School of Pharmacy, China Medical University, Shenyang 110001, China; Cardiovascular Institute of China Medical University, Shenyang 110001, China
| | - Huiyuan Hu
- Department of Pharmaceutical Toxicology, School of Pharmacy, China Medical University, Shenyang 110001, China; Cardiovascular Institute of China Medical University, Shenyang 110001, China
| | - Feng Guo
- Department of Pharmaceutical Toxicology, School of Pharmacy, China Medical University, Shenyang 110001, China; Cardiovascular Institute of China Medical University, Shenyang 110001, China
| | - Qinghua Gao
- Department of Pharmaceutical Toxicology, School of Pharmacy, China Medical University, Shenyang 110001, China; Cardiovascular Institute of China Medical University, Shenyang 110001, China
| | - Dongxue Shao
- Department of Pharmaceutical Toxicology, School of Pharmacy, China Medical University, Shenyang 110001, China
| | - Dandan Yin
- Department of Pharmaceutical Toxicology, School of Pharmacy, China Medical University, Shenyang 110001, China
| | - Hongmei Wang
- Department of Pharmaceutical Toxicology, School of Pharmacy, China Medical University, Shenyang 110001, China
| | - Xuefei Sun
- Department of Pharmaceutical Toxicology, School of Pharmacy, China Medical University, Shenyang 110001, China; Cardiovascular Institute of China Medical University, Shenyang 110001, China
| | - Meimi Zhao
- Department of Pharmaceutical Toxicology, School of Pharmacy, China Medical University, Shenyang 110001, China; Cardiovascular Institute of China Medical University, Shenyang 110001, China
| | - Etsuko Minobe
- Department of Physiology, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima 890-8544, Japan
| | - Yingxian Sun
- Cardiovascular Institute of China Medical University, Shenyang 110001, China
| | - Guangyu Jiao
- Respiratory Department and Intensive Care Unit, Shengjing Hospital of China Medical University, Shenyang 110004, China
| | - Masaki Kameyama
- Department of Physiology, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima 890-8544, Japan
| | - Liying Hao
- Department of Pharmaceutical Toxicology, School of Pharmacy, China Medical University, Shenyang 110001, China; Cardiovascular Institute of China Medical University, Shenyang 110001, China.
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27
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Parameswaran S, Sharma RK. Altered expression of calcineurin, calpain, calpastatin and HMWCaMBP in cardiac cells following ischemia and reperfusion. Biochem Biophys Res Commun 2013; 443:604-9. [PMID: 24333421 DOI: 10.1016/j.bbrc.2013.12.019] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2013] [Accepted: 12/03/2013] [Indexed: 11/25/2022]
Abstract
A rise in intracellular myocardial Ca(2+) during cardiac ischemia activates calpain (Calpn) thereby causing damage to myocardial proteins, which leads to myocyte death and consequently to loss of myocardial structure and function. Calcineurin (CaN) interacts with Calpn and causes cellular damage eventually leading to cell death. Calpastatin (Calp) and high molecular weight calmodulin-binding protein (HMWCaMBP) (homolog of Calp), inhibit Calpn activity and thus prevent cell death. CaN stimulation can also result in self-repair of damaged cardiomyocytes. The present study attempts to elucidate the expression of these proteins in cells under pre-ischemic condition (control), following ischemia induction and also reperfusion subsequent to ischemia. For the first time, flow cytometric analysis (FACS) has been used for analyzing protein expression concurrently with viability. We induced ischemia and subsequently reperfusion in 80% confluent cultures of neonatal murine cardiomyocytes (NMCC). Viability following induction was assessed with 7-AAD staining and the cells were simultaneously checked for protein expression by FACS. We observed that ischemia induction results in increased expression of CaN, Calp and Calpn. HMWCaMBP expression was reduced in live cells following ischemia which suggests that there is a poor survival outcome of cells expressing HMWCaMBP thereby making it a potential biomarker for such cells. Most live cells following ischemia expressed CaN pointing towards self-repair and favorable survival outcomes.
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Affiliation(s)
- Sreejit Parameswaran
- Department of Pathology and Laboratory Medicine, Cancer Research Cluster, University of Saskatchewan, Room 4D40, 107 Wiggins Road, Saskatoon, Saskatchewan S7N 5E5, Canada
| | - Rajendra K Sharma
- Department of Pathology and Laboratory Medicine, Cancer Research Cluster, University of Saskatchewan, Room 4D40, 107 Wiggins Road, Saskatoon, Saskatchewan S7N 5E5, Canada.
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28
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Cruzen SM, Paulino PVR, Lonergan SM, Huff-Lonergan E. Postmortem proteolysis in three muscles from growing and mature beef cattle. Meat Sci 2013; 96:854-61. [PMID: 24211543 DOI: 10.1016/j.meatsci.2013.09.021] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2013] [Revised: 08/09/2013] [Accepted: 09/23/2013] [Indexed: 10/26/2022]
Abstract
The objective of this study was to determine calpain system activity and postmortem protein degradation in three muscles from growing (n=6, 7.3 ± 0.5 months) and mature (n=6, 106.7 ± 43.1 months) beef cattle. The ratio of μ-calpain:total calpastatin activity tended to be lower in mature animals (P=0.08), suggesting reduced potential for proteolysis. Additionally, muscles from the mature group had greater calpastatin activity compared to calves at 6 days postmortem and had less μ-calpain autolysis and troponin-T and titin degradation during the aging period (P<0.01). Between the longissimus, semimembranosus, and triceps brachii muscles, the triceps brachii had the least postmortem proteolysis, with greater calpastatin activity and less troponin-T and titin degradation compared to other muscles (P<0.01). These data suggest that calpastatin activity in muscle from older animals is more persistent postmortem. This difference may contribute to the decreased protein degradation and increased toughness of beef from mature cattle, even after aging.
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Affiliation(s)
- Shannon M Cruzen
- Department of Animal Science, Iowa State University, Ames, IA 50011, USA.
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29
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Tizioto PC, Gromboni CF, Nogueira ARDA, de Souza MM, Mudadu MDA, Tholon P, Rosa ADN, Tullio RR, Medeiros SR, Nassu RT, Regitano LCDA. Calcium and potassium content in beef: influences on tenderness and associations with molecular markers in Nellore cattle. Meat Sci 2013; 96:436-40. [PMID: 23995697 DOI: 10.1016/j.meatsci.2013.08.001] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2013] [Revised: 08/01/2013] [Accepted: 08/01/2013] [Indexed: 11/17/2022]
Abstract
Calcium (Ca) and potassium (K) are essential nutrients in animal nutrition. Furthermore, the Ca content can influence meat tenderness because it is needed by the proteolytic system of calpains and calpastatins, major factors in postmortem tenderization of skeletal muscles. K content, which is needed for muscle contraction, can also affect meat tenderness. This study showed that K positively affects the Warner-Bratzler shear force (WBSF), measured at 14days of meat aging, which means that higher levels of K are related to lower meat tenderness. Additionally, a significant effect (P≤0.015) of a SNP in the calcium-activated neutral protease 1 (CAPN1) gene on Ca content was observed. Metal content in beef can affect not only nutritional values but also meat quality traits. Part of this effect may be related to variation in specific genes.
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30
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Fei B, Yu S, Geahlen RL. Modulation by Syk of Bcl-2, calcium and the calpain- calpastatin proteolytic system in human breast cancer cells. Biochim Biophys Acta 2013; 1833:2153-64. [PMID: 23684705 DOI: 10.1016/j.bbamcr.2013.05.010] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/22/2013] [Revised: 05/07/2013] [Accepted: 05/09/2013] [Indexed: 01/02/2023]
Abstract
Syk is a 72kDa non-receptor tyrosine kinase that is best characterized in hematopoietic cells. While Syk is pro-tumorigenic in some cancer cell types, it also has been reported as a negative regulator of metastatic cell growth in others. An examination of the RelA (p65) subunit of NF-κB expressed in MCF7 breast cancer cells indicated that either treatment with pervanadate or stable expression of Syk protected RelA from calpain-mediated proteolysis. Similar results were observed with the tyrosine phosphatase, PTP1B, another sensitive calpain substrate. The activity of calpain in MCF7 cell lysates was inhibited by both treatment with hydrogen peroxide and expression of Syk, the former due to oxidative inactivation of calpain and the latter to enhanced expression of calpastatin (CAST), the endogenous calpain inhibitor. The level of CAST was elevated in the cytosolic fraction of Syk-positive breast cancer cells resulting in more CAST present in complex with calpain in cell lysates. The high levels of CAST coincided with elevated basal levels of calcium-and of intracellular calpain activity-in Syk-expressing cells resulting from decreased levels of Bcl-2, an inhibitor of IP3-receptor-mediated calcium release. The inhibition of cellular calpain stimulated the Syk-mediated enhancement of NF-κB induced by TNF-α, enhanced tyrosine phosphorylation resulting from integrin crosslinking, and increased the localization of Syk to the plasma membrane.
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Affiliation(s)
- Bei Fei
- Department of Medicinal Chemistry and Molecular Pharmacology, Purdue University, West Lafayette, IN 47907, USA
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Wang Y, Zheng D, Wei M, Ma J, Yu Y, Chen R, Lacefield JC, Xu H, Peng T. Over-expression of calpastatin aggravates cardiotoxicity induced by doxorubicin. Cardiovasc Res 2013; 98:381-90. [PMID: 23455548 DOI: 10.1093/cvr/cvt048] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
AIMS Doxorubicin causes damage to the heart, which may present as cardiomyopathy. However, the mechanisms by which doxorubicin induces cardiotoxicity remain not fully understood and no effective prevention for doxorubicin cardiomyopathy is available. Calpains, a family of calcium-dependent thiol-proteases, have been implicated in cardiovascular diseases. Their activities are tightly controlled by calpastatin. This study employed transgenic mice over-expressing calpastatin to investigate the role of calpain in doxorubicin-induced cardiotoxicity. METHODS AND RESULTS Doxorubicin treatment decreased calpain activities in cultured neonatal mouse cardiomyocytes and in vivo mouse hearts, which correlated with down-regulation of calpain-1 and calpain-2 proteins. Over-expression of calpastatin or incubation with pharmacological calpain inhibitors enhanced apoptosis in neonatal and adult cardiomyocytes induced by doxorubicin. In contrast, over-expression of calpain-2 but not calpain-1 attenuated doxorubicin-induced apoptosis in cardiomyocytes. The pro-apoptotic effects of calpain inhibition were associated with down-regulation of protein kinase B (AKT) protein and mRNA expression, and a concomitant reduction in glycogen synthase kinase-3beta (GSK-3β) phosphorylation (Ser9) in doxorubicin-treated cardiomyocytes. Blocking AKT further increased doxorubicin-induced cardiac injuries, suggesting the effects of calpain inhibition may be mediated by inactivating the AKT signalling. In an in vivo model of doxorubicin-induced cardiotoxicity, over-expression of calpastatin exacerbated myocardial dysfunction as assessed by echocardiography and haemodynamic measurement in transgenic mice 5 days after doxorubicin injection. The 5-day mortality was higher in transgenic mice (29.16%) compared with their wild-type littermates (8%) after doxorubicin treatment. CONCLUSION Over-expression of calpastatin enhances doxorubicin-induced cardiac injuries through calpain inhibition and thus, calpains may protect cardiomyocytes against doxorubicin-induced cardiotoxicity.
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Affiliation(s)
- Yanpeng Wang
- Department of Cardiology, Shanghai 6th People's Hospital, Shanghai Jiaotong University School of Medicine, Shanghai 200233, China
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Gaarder MØ, Bahuaud D, Veiseth-Kent E, Mørkøre T, Thomassen MS. Relevance of calpain and calpastatin activity for texture in super-chilled and ice-stored Atlantic salmon (Salmo salar L.) fillets. Food Chem 2011; 132:9-17. [PMID: 26434257 DOI: 10.1016/j.foodchem.2011.09.139] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2011] [Revised: 06/29/2011] [Accepted: 09/29/2011] [Indexed: 11/15/2022]
Abstract
The aim of the present experiment was to measure the protease activities in ice-stored and super-chilled Atlantic salmon (Salmo salar) fillets, and the effect on texture. Pre-rigour fillets of Atlantic salmon were either super-chilled to a core temperature of -1.5°C or directly chilled on ice prior to 144h of ice storage. A significantly higher calpain activity was detected in the super-chilled fillets at 6h post-treatment compared to the ice-stored fillets and followed by a significant decrease below its initial level, while the calpastatin activity was significantly lower for the super-chilled fillets at all time points. The cathepsin B+L and B activities increased significantly with time post-treatment; however, no significant differences were observed at any time points between the two treatments. For the ice stored fillets, the cathepsin L activity decreased significantly from 6 to 24h post-treatment and thereafter increased significantly to 144h post-treatment. There was also a significantly lower cathepsin L activity in the super-chilled fillets at 0h post-treatment. No significant difference in breaking force was detected; however, a significant difference in maximum compression (Fmax) was detected at 24h post-treatment with lower Fmax in the super-chilled fillets. This experiment showed that super-chilling had a significant effect on the protease activities and the ATP degradation in salmon fillets. The observed difference in Fmax may be a result of these observed differences, and may indicate a softening of the super-chilled salmon muscle at 24h post-treatment.
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Affiliation(s)
- M Ø Gaarder
- Norwegian University of Life Sciences (UMB), Department of Animal- and Aquacultural Sciences (IHA), Post Box 5003, 1432 Aas, Norway.
| | - D Bahuaud
- Norwegian University of Life Sciences (UMB), Department of Animal- and Aquacultural Sciences (IHA), Post Box 5003, 1432 Aas, Norway
| | | | - T Mørkøre
- Nofima Marin AS, Osloveien 1, 1430 Aas, Norway
| | - M S Thomassen
- Norwegian University of Life Sciences (UMB), Department of Animal- and Aquacultural Sciences (IHA), Post Box 5003, 1432 Aas, Norway
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