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Tan JH, Cao RC, Zhou L, Zhou ZT, Chen HJ, Xu J, Chen XM, Jin YC, Lin JY, Qi ZC, Zeng JL, Li SJ, Luo M, Hu GD, Jin J, Zhang GW. EMC6 regulates acinar apoptosis via APAF1 in acute and chronic pancreatitis. Cell Death Dis 2020; 11:966. [PMID: 33177505 PMCID: PMC7658364 DOI: 10.1038/s41419-020-03177-3] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2020] [Revised: 10/24/2020] [Accepted: 10/27/2020] [Indexed: 02/07/2023]
Abstract
Treatment of acute pancreatitis (AP) and chronic pancreatitis (CP) remains problematic due to a lack of knowledge about disease-specific regulatory targets and mechanisms. The purpose of this study was to screen proteins related to endoplasmic reticulum (ER) stress and apoptosis pathways that may play a role in pancreatitis. Human pancreatic tissues including AP, CP, and healthy volunteers were collected during surgery. Humanized PRSS1 (protease serine 1) transgenic (PRSS1Tg) mice were constructed and treated with caerulein to mimic the development of human AP and CP. Potential regulatory proteins in pancreatitis were identified by proteomic screen using pancreatic tissues of PRSS1Tg AP mice. Adenoviral shRNA-mediated knockdown of identified proteins, followed by functional assays was performed to validate their roles. Functional analyses included transmission electron microscopy for ultrastructural analysis; qRT-PCR, western blotting, co-immunoprecipitation, immunohistochemistry, and immunofluorescence for assessment of gene or protein expression, and TUNEL assays for assessment of acinar cell apoptosis. Humanized PRSS1Tg mice could mimic the development of human pancreatic inflammatory diseases. EMC6 and APAF1 were identified as potential regulatory molecules in AP and CP models by proteomic analysis. Both EMC6 and APAF1 regulated apoptosis and inflammatory injury in pancreatic inflammatory diseases. Moreover, APAF1 was regulated by EMC6, induced apoptosis to injure acinar cells and promoted inflammation. In the progression of pancreatitis, EMC6 was activated and then upregulated APAF1 to induce acinar cell apoptosis and inflammatory injury. These findings suggest that EMC6 may be a new therapeutic target for the treatment of pancreatic inflammatory diseases.
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Affiliation(s)
- Jie-Hui Tan
- Division of Hepatobiliopancreatic Surgery, Department of General Surgery, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Rong-Chang Cao
- Division of Hepatobiliopancreatic Surgery, Department of General Surgery, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Lei Zhou
- Division of Hepatobiliopancreatic Surgery, Department of General Surgery, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Zhi-Tao Zhou
- Department of the Electronic Microscope Room, Central Laboratory, Southern Medical University, Guangzhou, China
| | - Huo-Ji Chen
- School of Traditional Chinese Medicine, Southern Medical University, Guangzhou, China
| | - Jia Xu
- Department of Pathophysiology, Southern Medical University, Guangzhou, China
| | - Xue-Mei Chen
- Department of Occupational Health and Medicine, Guangdong Provincial Key Laboratory of Tropical Disease Research, School of Public Health, Southern Medical University, Guangzhou, China
| | - Yang-Chen Jin
- The First Clinical Medical College, Southern Medical University, Guangzhou, China
| | - Jia-Yu Lin
- The First Clinical Medical College, Southern Medical University, Guangzhou, China
| | - Zhao-Chang Qi
- The First Clinical Medical College, Southern Medical University, Guangzhou, China
| | - Jun-Ling Zeng
- Laboratory Animal Research Center of Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Shu-Ji Li
- Guangdong-Hong Kong-Macao Greater Bay Area Center for Brain Science and Brain-Inspired Intelligence, Southern Medical University, Guangzhou, China
| | - Min Luo
- Department of Laboratory Medicine, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Guo-Dong Hu
- Department of Respiratory and Crit Care Medicine, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Jin Jin
- Department of Gynaecology and Obstetrics, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Guo-Wei Zhang
- Division of Hepatobiliopancreatic Surgery, Department of General Surgery, Nanfang Hospital, Southern Medical University, Guangzhou, China.
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Gröschel M, Basta D, Ernst A, Mazurek B, Szczepek AJ. Acute Noise Exposure Is Associated With Intrinsic Apoptosis in Murine Central Auditory Pathway. Front Neurosci 2018; 12:312. [PMID: 29867323 PMCID: PMC5954103 DOI: 10.3389/fnins.2018.00312] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2018] [Accepted: 04/23/2018] [Indexed: 01/08/2023] Open
Abstract
Noise that is capable of inducing the hearing loss (NIHL) has a strong impact on the inner ear structures and causes early and most obvious pathophysiological changes in the auditory periphery. Several studies indicated that intrinsic apoptotic cell death mechanisms are the key factors inducing cellular degeneration immediately after noise exposure and are maintained for days or even weeks. In addition, studies demonstrated several changes in the central auditory system following noise exposure, consistent with early apoptosis-related pathologies. To clarify the underlying mechanisms, the present study focused on the noise-induced gene and protein expression of the pro-apoptotic protease activating factor-1 (APAF1) and the anti-apoptotic B-cell lymphoma 2 related protein a1a (BCL2A1A) in the cochlear nucleus (CN), inferior colliculus (IC) and auditory cortex (AC) of the murine central auditory pathway. The expression of Bcl2a1a mRNA was upregulated immediately after trauma in all tissues investigated, whereas the protein levels were significantly reduced at least in the auditory brainstem. Conversely, acute noise has decreased the expression of Apaf1 gene along the auditory pathway. The changes in APAF1 protein level were not statistically significant. It is tempting to speculate that the acoustic overstimulation leads to mitochondrial dysfunction and induction of apoptosis by regulation of proapoptotic and antiapoptotic proteins. The inverse expression pattern on the mRNA level of both genes might reflect a protective response to decrease cellular damage. Our results indicate the immediate presence of intrinsic apoptosis following noise trauma. This, in turn, may significantly contribute to the development of central structural deficits. Auditory pathway-specific inhibition of intrinsic apoptosis could be a therapeutic approach for the treatment of acute (noise-induced) hearing loss to prevent irreversible neuronal injury in auditory brain structures and to avoid profound deficits in complex auditory processing.
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Affiliation(s)
- Moritz Gröschel
- Department of Otolaryngology, Unfallkrankenhaus Berlin, Charité Medical School, Berlin, Germany
| | - Dietmar Basta
- Department of Otolaryngology, Unfallkrankenhaus Berlin, Charité Medical School, Berlin, Germany
| | - Arne Ernst
- Department of Otolaryngology, Unfallkrankenhaus Berlin, Charité Medical School, Berlin, Germany
| | - Birgit Mazurek
- Tinnitus Center, Berlin Institute of Health, Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, Berlin, Germany
| | - Agnieszka J Szczepek
- Department of Otorhinolaryngology, Head and Neck Surgery, Berlin Institute of Health, Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, Berlin, Germany
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Chemotherapeutic Drugs and Mitochondrial Dysfunction: Focus on Doxorubicin, Trastuzumab, and Sunitinib. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2018; 2018:7582730. [PMID: 29743983 PMCID: PMC5878876 DOI: 10.1155/2018/7582730] [Citation(s) in RCA: 199] [Impact Index Per Article: 33.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/03/2017] [Revised: 01/23/2018] [Accepted: 02/06/2018] [Indexed: 02/07/2023]
Abstract
Many cancer therapies produce toxic side effects whose molecular mechanisms await full elucidation. The most feared and studied side effect of chemotherapeutic drugs is cardiotoxicity. Also, skeletal muscle physiology impairment has been recorded after many chemotherapeutical treatments. However, only doxorubicin has been extensively studied for its side effects on skeletal muscle. Chemotherapeutic-induced adverse side effects are, in many cases, mediated by mitochondrial damage. In particular, trastuzumab and sunitinib toxicity is mainly associated with mitochondria impairment and is mostly reversible. Vice versa, doxorubicin-induced toxicity not only includes mitochondria damage but can also lead to a more robust and extensive cell injury which is often irreversible and lethal. Drugs interfering with mitochondrial functionality determine the depletion of ATP reservoirs and lead to subsequent reversible contractile dysfunction. Mitochondrial damage includes the impairment of the respiratory chain and the loss of mitochondrial membrane potential with subsequent disruption of cellular energetic. In a context of increased stress, AMPK has a key role in maintaining energy homeostasis, and inhibition of the AMPK pathway is one of the proposed mechanisms possibly mediating mitochondrial toxicity due to chemotherapeutics. Therapies targeting and protecting cell metabolism and energy management might be useful tools in protecting muscular tissues against the toxicity induced by chemotherapeutic drugs.
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Gatta L, Vitiello L, Gorini S, Chiandotto S, Costelli P, Giammarioli AM, Malorni W, Rosano G, Ferraro E. Modulating the metabolism by trimetazidine enhances myoblast differentiation and promotes myogenesis in cachectic tumor-bearing c26 mice. Oncotarget 2017; 8:113938-113956. [PMID: 29371959 PMCID: PMC5768376 DOI: 10.18632/oncotarget.23044] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2017] [Accepted: 11/28/2017] [Indexed: 12/28/2022] Open
Abstract
Trimetazidine (TMZ) is a metabolic reprogramming agent able to partially inhibit mitochondrial free fatty acid β-oxidation while enhancing glucose oxidation. Here we have found that the metabolic shift driven by TMZ enhances the myogenic potential of skeletal muscle progenitor cells leading to MyoD, Myogenin, Desmin and the slow isoforms of troponin C and I over-expression. Moreover, similarly to exercise, TMZ stimulates the phosphorylation of the AMP-activated protein kinase (AMPK) and up-regulates the peroxisome proliferator-activated receptor gamma coactivator 1-α (PGC1α), both of which are known to enhance the mitochondrial biogenesis necessary for myoblast differentiation. TMZ also induces autophagy which is required during myoblast differentiation and promotes myoblast alignment which allows cell fusion and myofiber formation. Finally, we found that intraperitoneally administered TMZ (5mg/kg) is able to stimulate myogenesis in vivo both in a mice model of cancer cachexia (C26 mice) and upon cardiotoxin damage. Collectively, our work demonstrates that TMZ enhances myoblast differentiation and promotes myogenesis, which might contribute recovering stem cell blunted regenerative capacity and counteracting muscle wasting, thanks to the formation of new myofibers; TMZ is already in use in humans as an anti-anginal drug and its repositioning might impact significantly on aging and regeneration-impaired disorders, including cancer cachexia, as well as have implications in regenerative medicine.
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Affiliation(s)
- Lucia Gatta
- Laboratory of Pathophysiology of Cachexia and Metabolism of Skeletal Muscle, IRCCS San Raffaele Pisana, Rome, Italy
| | - Laura Vitiello
- Laboratory of Pathophysiology of Cachexia and Metabolism of Skeletal Muscle, IRCCS San Raffaele Pisana, Rome, Italy
| | - Stefania Gorini
- Laboratory of Pathophysiology of Cachexia and Metabolism of Skeletal Muscle, IRCCS San Raffaele Pisana, Rome, Italy
| | - Sergio Chiandotto
- Department of Molecular and Clinical Medicine (DMCM), C/o Department of Surgery "Pietro Valdoni", Sapienza University of Rome, Rome, Italy
| | - Paola Costelli
- Department of Clinical and Biological Sciences, University of Turin, Turin, Italy.,Interuniversity Institute of Myology-IIM, Chieti, Italy
| | - Anna Maria Giammarioli
- Department of Therapeutic Research and Medicine Evaluation, Istituto Superiore di Sanita, Rome, Italy
| | - Walter Malorni
- Department of Therapeutic Research and Medicine Evaluation, Istituto Superiore di Sanita, Rome, Italy
| | - Giuseppe Rosano
- Cardiovascular and Cell Sciences Institute, St George's University of London, Cranmer Terrace, London, UK
| | - Elisabetta Ferraro
- Laboratory of Pathophysiology of Cachexia and Metabolism of Skeletal Muscle, IRCCS San Raffaele Pisana, Rome, Italy
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Molinari F, Pin F, Gorini S, Chiandotto S, Pontecorvo L, Penna F, Rizzuto E, Pisu S, Musarò A, Costelli P, Rosano G, Ferraro E. The mitochondrial metabolic reprogramming agent trimetazidine as an 'exercise mimetic' in cachectic C26-bearing mice. J Cachexia Sarcopenia Muscle 2017; 8:954-973. [PMID: 29130633 PMCID: PMC5700442 DOI: 10.1002/jcsm.12226] [Citation(s) in RCA: 59] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/15/2017] [Revised: 06/07/2017] [Accepted: 07/05/2017] [Indexed: 12/12/2022] Open
Abstract
BACKGROUND Cancer cachexia is characterized by muscle depletion and exercise intolerance caused by an imbalance between protein synthesis and degradation and by impaired myogenesis. Myofibre metabolic efficiency is crucial so as to assure optimal muscle function. Some drugs are able to reprogram cell metabolism and, in some cases, to enhance metabolic efficiency. Based on these premises, we chose to investigate the ability of the metabolic modulator trimetazidine (TMZ) to counteract skeletal muscle dysfunctions and wasting occurring in cancer cachexia. METHODS For this purpose, we used mice bearing the C26 colon carcinoma as a model of cancer cachexia. Mice received 5 mg/kg TMZ (i.p.) once a day for 12 consecutive days. A forelimb grip strength test was performed and tibialis anterior, and gastrocnemius muscles were excised for analysis. Ex vivo measurement of skeletal muscle contractile properties was also performed. RESULTS Our data showed that TMZ induces some effects typically achieved through exercise, among which is grip strength increase, an enhanced fast-to slow myofibre phenotype shift, reduced glycaemia, PGC1α up-regulation, oxidative metabolism, and mitochondrial biogenesis. TMZ also partially restores the myofibre cross-sectional area in C26-bearing mice, while modulation of autophagy and apoptosis were excluded as mediators of TMZ effects. CONCLUSIONS In conclusion, our data show that TMZ acts like an 'exercise mimetic' and is able to enhance some mechanisms of adaptation to stress in cancer cachexia. This makes the modulation of the metabolism, and in particular TMZ, a suitable candidate for a therapeutic rehabilitative protocol design, particularly considering that TMZ has already been approved for clinical use.
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Affiliation(s)
- Francesca Molinari
- Laboratory of Pathophysiology of Cachexia and Metabolism of Skeletal Muscle, IRCCS San Raffaele Pisana, Via di Val Cannuta, 00166, Rome, Italy
| | - Fabrizio Pin
- Department of Clinical and Biological Sciences, IIM, University of Turin, Corso Raffaello, 10125, Turin, Italy
| | - Stefania Gorini
- Laboratory of Pathophysiology of Cachexia and Metabolism of Skeletal Muscle, IRCCS San Raffaele Pisana, Via di Val Cannuta, 00166, Rome, Italy
| | - Sergio Chiandotto
- DMCM Department of Molecular and Clinical Medicine, c/o Department of Surgery 'Pietro Valdoni', Sapienza University of Rome, Via Scarpa, 00161, Rome, Italy
| | - Laura Pontecorvo
- Laboratory of Pathophysiology of Cachexia and Metabolism of Skeletal Muscle, IRCCS San Raffaele Pisana, Via di Val Cannuta, 00166, Rome, Italy
| | - Fabio Penna
- Department of Clinical and Biological Sciences, IIM, University of Turin, Corso Raffaello, 10125, Turin, Italy
| | - Emanuele Rizzuto
- Department of Mechanical and Aerospace Engineering, Sapienza University of Rome, Via Eudossiana, 00184, Rome, Italy
| | - Simona Pisu
- Institute Pasteur Cenci-Bolognetti, DAHFMO-Unit of Histology and Medical Embryology, IIM, Sapienza University of Rome, Via Scarpa, 00161, Rome, Italy
| | - Antonio Musarò
- Institute Pasteur Cenci-Bolognetti, DAHFMO-Unit of Histology and Medical Embryology, IIM, Sapienza University of Rome, Via Scarpa, 00161, Rome, Italy.,Center for Life Nano Science@Sapienza, Istituto Italiano di Tecnologia, Viale Regina Elena, 00161, Rome, Italy
| | - Paola Costelli
- Department of Clinical and Biological Sciences, IIM, University of Turin, Corso Raffaello, 10125, Turin, Italy
| | - Giuseppe Rosano
- Laboratory of Pathophysiology of Cachexia and Metabolism of Skeletal Muscle, IRCCS San Raffaele Pisana, Via di Val Cannuta, 00166, Rome, Italy.,Cardiovascular and Cell Sciences Institute, St George's University of London, Cranmer Terrace London, SW17, UK
| | - Elisabetta Ferraro
- Laboratory of Pathophysiology of Cachexia and Metabolism of Skeletal Muscle, IRCCS San Raffaele Pisana, Via di Val Cannuta, 00166, Rome, Italy
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