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Involvement of protein S-nitrosylation in regulating beef apoptosis during postmortem aging. Food Chem 2020; 326:126975. [PMID: 32413758 DOI: 10.1016/j.foodchem.2020.126975] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2020] [Revised: 04/29/2020] [Accepted: 05/03/2020] [Indexed: 12/19/2022]
Abstract
This study was the first attempt to explore the effect of protein S-nitrosylation on the progress of apoptosis in postmortem beef semimembranosus muscle (SM). Five beef SM were incubated with S-nitrosoglutathione (GSNO, nitric oxide donor), control, or Nω-nitro-l-arginine methyl ester hydrochloride (l-NAME, nitric oxide synthase inhibitor). Results suggest that compared to the control, more chromatin condensation, nucleusfragmentation, apoptoticbody formation, and mitochondrialswelling were observed in the l-NAME group while these apoptosis-related morphological changes were retarded in the GSNO group. Notably, there were fewer apoptotic nuclei in the GSNO group and more apoptotic nuclei in the l-NAME group compared to the control (P < 0.05). Additionally, caspase-3 and -9 activities and caspase-3 activation were greatly decreased by GSNO treatment and increased by l-NAME treatment (P < 0.05). The morphological and biochemical results indicate that protein S-nitrosylation could play a negative regulatory role in beef apoptosis during postmortem aging.
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2
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Real-time and in-situ monitoring of Abrin induced cell apoptosis by using SERS spectroscopy. Talanta 2019; 195:8-16. [DOI: 10.1016/j.talanta.2018.11.015] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2018] [Revised: 10/27/2018] [Accepted: 11/05/2018] [Indexed: 02/07/2023]
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3
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Chen Y, Bai X, Su L, Du Z, Shen A, Materny A, Hu J. Combined Labelled and Label-free SERS Probes for Triplex Three-dimensional Cellular Imaging. Sci Rep 2016; 6:19173. [PMID: 26781186 PMCID: PMC4726017 DOI: 10.1038/srep19173] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2014] [Accepted: 12/02/2015] [Indexed: 01/12/2023] Open
Abstract
Cells are complex chemical systems, where the molecular composition at different cellular locations and specific intracellular chemical interactions determine the biological function. An in-situ nondestructive characterization of the complicated chemical processes (like e.g. apoptosis) is the goal of our study. Here, we present the results of simultaneous and three-dimensional imaging of double organelles (nucleus and membrane) in single HeLa cells by means of either labelled or label-free surface-enhanced Raman spectroscopy (SERS). This combination of imaging with and without labels is not possible when using fluorescence microscopy. The SERS technique is used for a stereoscopic description of the intrinsic chemical nature of nuclei and the precise localization of folate (FA) and luteinizing hormone-releasing hormone (LHRH) on the membrane under highly confocal conditions. We also report on the time-dependent changes of cell nuclei as well as membrane receptor proteins during apoptosis analyzed by statistical multivariate methods. The multiplex three-dimensional SERS imaging technique allows for both temporal (real time) and spatial (multiple organelles and molecules in three-dimensional space) live-cell imaging and therefore provides a new and attractive 2D/3D tracing method in biomedicine on subcellular level.
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Affiliation(s)
- Yong Chen
- Key Laboratory of Analytical Chemistry for Biology and Medicine, Ministry of Education, College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072 (China)
| | - Xiangru Bai
- Key Laboratory of Analytical Chemistry for Biology and Medicine, Ministry of Education, College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072 (China)
| | - Le Su
- Key Laboratory of Analytical Chemistry for Biology and Medicine, Ministry of Education, College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072 (China)
| | - Zhanwei Du
- College of Computer Science and Technology, Jilin University, Changchun 130012 (China)
| | - Aiguo Shen
- Key Laboratory of Analytical Chemistry for Biology and Medicine, Ministry of Education, College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072 (China)
| | - Arnulf Materny
- Department of Physics & Earth Sciences, Focus Area Health, Jacobs University Bremen, Campus Ring 1, 28759 Bremen (Germany)
| | - Jiming Hu
- Key Laboratory of Analytical Chemistry for Biology and Medicine, Ministry of Education, College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072 (China)
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4
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Morciano G, Giorgi C, Bonora M, Punzetti S, Pavasini R, Wieckowski MR, Campo G, Pinton P. Molecular identity of the mitochondrial permeability transition pore and its role in ischemia-reperfusion injury. J Mol Cell Cardiol 2014; 78:142-53. [PMID: 25172387 DOI: 10.1016/j.yjmcc.2014.08.015] [Citation(s) in RCA: 168] [Impact Index Per Article: 16.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/15/2014] [Revised: 08/18/2014] [Accepted: 08/19/2014] [Indexed: 10/24/2022]
Abstract
The mitochondrial permeability transition is a key event in cell death. Intense research efforts have been focused on elucidating the molecular components of the mitochondrial permeability transition pore (mPTP) to improve the understanding and treatment of various pathologies, including neurodegenerative disorders, cancer and cardiac diseases. Several molecular factors have been proposed as core components of the mPTP; however, further investigation has indicated that these factors are among a wide range of regulators. Thus, the scientific community lacks a clear model of the mPTP. Here, we review the molecular factors involved in the regulation and formation of the mPTP. Furthermore, we propose that the mitochondrial ATP synthase, specifically its c subunit, is the central core component of the mPTP complex. Moreover, we discuss the involvement of the mPTP in ischemia and reperfusion as well as the results of clinical studies targeting the mPTP to ameliorate ischemia-reperfusion injury. This article is part of a Special Issue entitled "Mitochondria: From Basic Mitochondrial Biology to Cardiovascular Disease".
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Affiliation(s)
- Giampaolo Morciano
- Department of Morphology, Surgery and Experimental Medicine, Section of Pathology, Oncology and Experimental Biology, Laboratory for Technologies of Advanced Therapies (LTTA), University of Ferrara, Ferrara, Italy
| | - Carlotta Giorgi
- Department of Morphology, Surgery and Experimental Medicine, Section of Pathology, Oncology and Experimental Biology, Laboratory for Technologies of Advanced Therapies (LTTA), University of Ferrara, Ferrara, Italy
| | - Massimo Bonora
- Department of Morphology, Surgery and Experimental Medicine, Section of Pathology, Oncology and Experimental Biology, Laboratory for Technologies of Advanced Therapies (LTTA), University of Ferrara, Ferrara, Italy
| | - Silvia Punzetti
- Cardiovascular Institute, Azienda Ospedaliero-Universitaria S. Anna and LTTA Center, Ferrara, Italy
| | - Rita Pavasini
- Cardiovascular Institute, Azienda Ospedaliero-Universitaria S. Anna and LTTA Center, Ferrara, Italy
| | - Mariusz R Wieckowski
- Department of Biochemistry, Nencki Institute of Experimental Biology, Warsaw, Poland
| | - Gianluca Campo
- Cardiovascular Institute, Azienda Ospedaliero-Universitaria S. Anna and LTTA Center, Ferrara, Italy
| | - Paolo Pinton
- Department of Morphology, Surgery and Experimental Medicine, Section of Pathology, Oncology and Experimental Biology, Laboratory for Technologies of Advanced Therapies (LTTA), University of Ferrara, Ferrara, Italy.
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5
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Kang B, Austin LA, El-Sayed MA. Observing real-time molecular event dynamics of apoptosis in living cancer cells using nuclear-targeted plasmonically enhanced Raman nanoprobes. ACS NANO 2014; 8:4883-92. [PMID: 24708404 DOI: 10.1021/nn500840x] [Citation(s) in RCA: 111] [Impact Index Per Article: 11.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Apoptosis is a biological process that plays important roles in embryogenesis, aging, and various diseases. During the process of apoptosis, cells undergo a series of morphological and molecular events such as blebbing, cell shrinkage, proteolysis, and nuclear DNA fragmentation. Investigating these events on a molecular level is crucial for gaining a more complete understanding of the intricate mechanism of apoptosis; however, the simultaneous direct observation of morphological and molecular events in real-time on a single living cell scale still remains a challenge. Herein, we directly monitored morphological and molecular events during cellular apoptosis in real-time after the treatment of an apoptosis-inducing agent, by utilizing our previously described plasmonically enhanced Rayleigh/Raman spectroscopic technique. Spectroscopic analysis of the DNA/protein composition around the cell nucleus revealed the occurrence and dynamics of three apoptotic molecular events: protein denaturation, proteolysis, and DNA fragmentation. The molecular event dynamics were used to create a temporal profile of apoptotic events in single cells. It is found that the sequence of events occurring in the apoptotic process induced by hydrogen peroxide addition is protein denaturation through disulfide bond breakage as well as DNA fragmentation, followed in time by protein unraveling with hydrophobic amino acid exposure, and finally protein degradation. These results demonstrate the potential of using this time-dependent plasmonically enhanced vibrational imaging technique to study the detailed mechanism of other apoptosis molecular pathways induced by different agents (e.g., anticancer drugs). A note is given in the conclusion discussing the expected large difference between the SERS spectrum of biological molecules in solution and that observed in live cells which are enhanced by the plasmonic field of the aggregated nanoparticles.
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Affiliation(s)
- Bin Kang
- Laser Dynamics Laboratory, School of Chemistry and Biochemistry, Georgia Institute of Technology , Atlanta, Georgia 30332-0400, United States
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6
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Giorgi C, Baldassari F, Bononi A, Bonora M, De Marchi E, Marchi S, Missiroli S, Patergnani S, Rimessi A, Suski JM, Wieckowski MR, Pinton P. Mitochondrial Ca(2+) and apoptosis. Cell Calcium 2012; 52:36-43. [PMID: 22480931 PMCID: PMC3396846 DOI: 10.1016/j.ceca.2012.02.008] [Citation(s) in RCA: 333] [Impact Index Per Article: 27.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2012] [Revised: 02/23/2012] [Accepted: 02/24/2012] [Indexed: 01/13/2023]
Abstract
Mitochondria are key decoding stations of the apoptotic process. In support of this view, a large body of experimental evidence has unambiguously revealed that, in addition to the well-established function of producing most of the cellular ATP, mitochondria play a fundamental role in triggering apoptotic cell death. Various apoptotic stimuli cause the release of specific mitochondrial pro-apoptotic factors into the cytosol. The molecular mechanism of this release is still controversial, but there is no doubt that mitochondrial calcium (Ca(2+)) overload is one of the pro-apoptotic ways to induce the swelling of mitochondria, with perturbation or rupture of the outer membrane, and in turn the release of mitochondrial apoptotic factors into the cytosol. Here, we review as different proteins that participate in mitochondrial Ca(2+) homeostasis and in turn modulate the effectiveness of Ca(2+)-dependent apoptotic stimuli. Strikingly, the final outcome at the cellular level is similar, albeit through completely different molecular mechanisms: a reduced mitochondrial Ca(2+) overload upon pro-apoptotic stimuli that dramatically blunts the apoptotic response.
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Affiliation(s)
- Carlotta Giorgi
- Department of Experimental and Diagnostic Medicine, Section of General Pathology, Interdisciplinary Center for the Study of Inflammation (ICSI), Laboratory for Technologies of Advanced Therapies (LTTA), University of Ferrara, Ferrara, Italy
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7
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Mechanism of cytotoxic action of perfluorinated acids. III. Disturbance in Ca2+ homeostasis. Toxicol Appl Pharmacol 2011; 251:163-8. [DOI: 10.1016/j.taap.2011.01.002] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2010] [Revised: 12/20/2010] [Accepted: 01/04/2011] [Indexed: 01/29/2023]
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8
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Chen L, Feng XC, Lu F, Xu XL, Zhou GH, Li QY, Guo XY. Effects of camptothecin, etoposide and Ca2+ on caspase-3 activity and myofibrillar disruption of chicken during postmortem ageing. Meat Sci 2011; 87:165-74. [DOI: 10.1016/j.meatsci.2010.10.002] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2010] [Revised: 09/26/2010] [Accepted: 10/04/2010] [Indexed: 02/02/2023]
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9
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Abstract
Breast cancer is the second leading cause of cancer deaths among women in the United States. Several treatment options exist, with different side effects. To alleviate the side effects, several research groups have studied chemotherapeutic effects of plant compounds on cancer cells. These could be used as an alternative treatment option either alone or in combination with other chemotherapeutic drugs. The aim of this study was to evaluate the activity of a combination of perillyl alcohol (POH), methyl jasmonate (MJ) with cisplatin to define the most effective schedule and to investigate the mechanism of action in breast cancer cells. POH and MJ treatment (20% decrease in cell viability concentration) enhanced the cytotoxicity for subsequent exposure to cisplatin in MDA-MB-435 and MDA-MB-231 cells. Combination treatment of POH and MJ blocked cells at the G0/G1 phase of the cell cycle and the addition of cisplatin forced the cells to progress through the cell cycle and induced apoptosis. Apoptotic mechanistic studies indicated that POH and MJ treatment activated tumor necrosis factor receptor 1 and this was further increased by the addition of cisplatin. It was also found that mitochondrial membrane potential decreased with POH and MJ treatment; this effect was further enhanced by cisplatin treatment. These findings contributed to a better understanding of molecular mechanism of apoptosis in combination treatment of POH, MJ, and cisplatin. Results also showed that the combination treatment of three drugs is more effective than single drug alone or two drugs together.
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10
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Abstract
There is a growing consensus that the various forms of cell death (necrosis, apoptosis and autophagy) are not separated by strict boundaries, but rather share molecular effectors and signaling routes. Among the latter, a clear role is played by calcium (Ca(2+)), the ubiquitous second messenger involved in the control of a broad variety of physiological events. Fine tuning of intracellular Ca(2+) homeostasis by anti- and proapoptotic proteins shapes the Ca(2+) signal to which mitochondria and other cellular effectors are exposed, and hence the efficiency of various cell death inducers. Here, we will review: (i) the evidence linking calcium homeostasis to the regulation of apoptotic, and more recently autophagic cell death, (ii) the discussion of mitochondria as a critical, although not unique checkpoint and (iii) the molecular and functional elucidation of ER/mitochondria contacts, corresponding to the mitochondria-associated membrane (MAM) subfraction and proposed to be a specialized signaling microdomain.
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11
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Methyl jasmonate decreases membrane fluidity and induces apoptosis through tumor necrosis factor receptor 1 in breast cancer cells. Anticancer Drugs 2008; 19:766-76. [PMID: 18690087 DOI: 10.1097/cad.0b013e32830b5894] [Citation(s) in RCA: 56] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
In recent years, studies with plant compounds have shown both chemotherapeutic and chemopreventive properties. This study with plant stress hormones (jasmonates) showed growth inhibitory effects in breast cancer cells. cis-Jasmone and methyl jasmonate (MJ) inhibited the long-term proliferation of MDA-MB-435 and MCF-7 cells. Cell cycle analysis showed G0/G1 and S-phase arrest with increasing apoptotic population. Cellular signaling studies with MJ showed decreased membrane fluidity and activation of extrinsic and intrinsic apoptotic pathways. Specifically in extrinsic apoptotic pathway increased expression of TNF receptor 1, activation of mitogen-activated protein kinase and caspase-8 was observed. MJ also decreased the mitochondrial membrane potential and activated caspase-3 in breast cancer cells. In conclusion our results revealed novel-signaling mechanism of MJ in breast cancer cells, indicating that MJ could have potential applications for chemotherapeutic purposes.
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12
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Pinton P, Rizzuto R. Bcl-2 and Ca2+ homeostasis in the endoplasmic reticulum. Cell Death Differ 2006; 13:1409-18. [PMID: 16729032 DOI: 10.1038/sj.cdd.4401960] [Citation(s) in RCA: 203] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
Recent data have revealed an unexpected role of Bcl-2 in modulating the steady-state levels and agonist-dependent fluxes of Ca(2+) ions. Direct monitoring of endoplasmic reticulum (ER) Ca(2+) concentration with recombinant probes reveals a lower state of filling in Bcl-2-overexpressing cells and a higher leak rate from the organelle. The broader set of indirect data using cytosolic probes reveals a more complex scenario, as in many cases no difference was detected in the Ca(2+) content of the intracellular pools. At the same time, Ca(2+) signals have been shown to affect important checkpoints of the apoptotic process, such as mitochondria, thus tuning the sensitivity of cells to various challenges. In this contribution, we will review (i) the data on the effect of Bcl-2 on [Ca(2+)](er), (ii) the functional significance of the Ca(2+)-signalling alteration and (iii) the current insight into the possible mechanisms of this effect.
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Affiliation(s)
- P Pinton
- Department of Experimental and Diagnostic Medicine, Section of General Pathology, ER-GenTech laboratory and Interdisciplinary Center for the Study of Inflammation (ICSI), University of Ferrara, Italy
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13
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Abstract
The development of targeted probes (based on the molecular engineering of luminescent or fluorescent proteins) has allowed the specific measurement of [Ca2+] in intracellular organelles or cytoplasmic subdomains. This approach gave novel information on different aspects of cellular Ca2+ homeostasis. Regarding mitochondria, it was possible to demonstrate that, upon physiological stimulation of cells, Ca2+ is rapidly accumulated in the matrix. We will discuss the basic characteristics of this process, its role in modulating physiological and pathological events, such as the regulation of aerobic metabolism and the induction of cell death, and new insight into the regulatory mechanisms operating in vivo.
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Affiliation(s)
- Sara Leo
- Department of Experimental and Diagnostic Medicine, Section of General Pathology, and Interdisciplinary Center for the Study of Inflammation (ICSI), University of Ferrara, Italy
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14
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Betts R, Weinsheimer S, Blouse GE, Anagli J. Structural determinants of the calpain inhibitory activity of calpastatin peptide B27-WT. J Biol Chem 2003; 278:7800-9. [PMID: 12500971 DOI: 10.1074/jbc.m208350200] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Calpastatin is the natural specific inhibitor of calpain. Recent research has linked uncontrolled calpain activation to tissue damage after neuronal and cardiac ischemias, traumatic spine and brain injuries, as well as Alzheimer's disease and cataract formation. An imbalance between the activities of calpain and calpastatin is believed to be responsible for the pathological role of calpain. An important key to understanding calpain regulation by calpastatin is to determine, at the molecular level, how calpastatin interacts with calpain to inhibit its enzymatic activity. A 27-residue peptide (DPMSSTYIEELGKREVTIPPKYRELLA) derived from subdomain 1B of the repetitive domains of calpain, named peptide B27-WT, was previously shown to be a potent inhibitor of mu- and m-calpain. In this report, a combination of beta-alanine scanning mutagenesis and kinetic measurements was used to probe, in a quantitative, systematic, and simultaneous fashion, the relative contribution of the amino acid side chain and backbone functionalities to the overall calpain-inhibitory activity of B27-WT. The study identified two "hot spots," Leu(11)-Gly(12) and Thr(17)-Ile(18)-Pro(19), in B27-WT within which the residues critical for inhibitory function are clustered. Mutation of any one of the key residues in either of the two hot spots resulted in a dramatic loss of inhibitory activity. Furthermore, it was shown that a restricted conformation of the Leu(11)-Gly(12) and Thr(17)-Ile(18)-Pro(19) backbones is required for the peptide inhibitory function. These results suggest a plausible model in which the two hot spots are situated at or near the interface(s) of the calpain-calpastatin complex and act in a concerted fashion to inhibit calpain. The information on the specific contribution of the amide bond and side chain of each key residue to the bioactivity of B27-WT will contribute to a better understanding of the mechanism of calpain inhibition and lead to novel and effective therapies based on the specific inhibition of dysregulated or overactivated calpain.
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Affiliation(s)
- Russell Betts
- Division of Biochemical Research, Department of Pathology, Henry Ford Health Sciences Center, Detroit, Michigan 48202, USA
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15
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Ferrari D, Pinton P, Szabadkai G, Chami M, Campanella M, Pozzan T, Rizzuto R. Endoplasmic reticulum, Bcl-2 and Ca2+ handling in apoptosis. Cell Calcium 2002; 32:413-20. [PMID: 12543100 DOI: 10.1016/s0143416002002014] [Citation(s) in RCA: 86] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
In the complex signalling interplay that allows extracellular signals to be decoded into activation of apoptotic cell death, Ca(2+) plays a significant role. This is supported not only by evidence linking alterations in Ca(2+) homeostasis to the triggering of apoptotic (and in some cases necrotic) cell death, but also by recent data indicating that a key anti-apoptotic protein, Bcl-2, has a direct effect on ER Ca(2+) handling. We will briefly summarise the first aspect, and describe in more detail these new data, demonstrating that (i) Bcl-2 reduces the state of filling of the ER Ca(2+) store and (ii) this Ca(2+) signalling alteration renders the cells less sensitive to apoptotic stimuli. Overall, these results suggest that calcium homeostasis may represent a pharmacological target in the fundamental pathological process of apoptosis.
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Affiliation(s)
- D Ferrari
- Department of Experimental Medicine, Section of General Pathology, Telethon Center for Cell Imaging, Interdisciplinary Center for the Study of Inflammation, University of Ferrara, Via Borsari 46, I-44100, Ferrara, Italy
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16
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Abstract
Changes in the cytosolic Ca(2+) concentration ([Ca(2+)](c)) translate a variety of extracellular signals into widely diverse intracellular effects, ranging from secretion to movement, proliferation and also cell death. As regards the last one, it has long been known that large [Ca(2+)](c) increases lead cells to death. More recently, experimental evidence has been obtained that the oncogene Bcl-2 reduces the state of filling of intracellular Ca(2+) stores and thus affects the Ca(2+) responses induced by physiological and pathological stimuli. In this contribution, we will discuss this effect and its significance for the mechanism of action of Bcl-2, an important checkpoint of the apoptotic process.
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Affiliation(s)
- Paolo Pinton
- Department of Biomedical Sciences and CNR Center for the Study of Biomembranes, University of Padova, Via Colombo 3, 35121 Padova, Italy
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