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Sergeeva KV, Tyganov SA, Zaripova KA, Bokov RO, Nikitina LV, Konstantinova TS, Kalamkarov GR, Shenkman BS. Mechanical and signaling responses of unloaded rat soleus muscle to chronically elevated β-myosin activity. Arch Biochem Biophys 2024; 754:109961. [PMID: 38492659 DOI: 10.1016/j.abb.2024.109961] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2023] [Revised: 02/26/2024] [Accepted: 03/13/2024] [Indexed: 03/18/2024]
Abstract
It has been reported that muscle functional unloading is accompanied by an increase in motoneuronal excitability despite the elimination of afferent input. Thus, we hypothesized that pharmacological potentiation of spontaneous contractile soleus muscle activity during hindlimb unloading could activate anabolic signaling pathways and prevent the loss of muscle mass and strength. To investigate these aspects and underlying molecular mechanisms, we used β-myosin allosteric effector Omecamtiv Mekarbil (OM). We found that OM partially prevented the loss of isometric strength and intrinsic stiffness of the soleus muscle after two weeks of disuse. Notably, OM was able to attenuate the unloading-induced decrease in the rate of muscle protein synthesis (MPS). At the same time, the use of drug neither prevented the reduction in the markers of translational capacity (18S and 28S rRNA) nor activation of the ubiquitin-proteosomal system, which is evidenced by a decrease in the cross-sectional area of fast and slow muscle fibers. These results suggest that chemically-induced increase in low-intensity spontaneous contractions of the soleus muscle during functional unloading creates prerequisites for protein synthesis. At the same time, it should be assumed that the use of OM is advisable with pharmacological drugs that inhibit the expression of ubiquitin ligases.
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Affiliation(s)
- K V Sergeeva
- Institute of Biomedical Problems of the Russian Academy of Sciences, Moscow, Russia.
| | - S A Tyganov
- Institute of Biomedical Problems of the Russian Academy of Sciences, Moscow, Russia
| | - K A Zaripova
- Institute of Biomedical Problems of the Russian Academy of Sciences, Moscow, Russia
| | - R O Bokov
- Institute of Biomedical Problems of the Russian Academy of Sciences, Moscow, Russia
| | - L V Nikitina
- Institute of Immunology and Physiology, Ural Branch of the Russian Academy of Sciences, Ekaterinburg, Russia
| | - T S Konstantinova
- Emanuel Institute of Biochemical Physics, Russian Academy of Sciences, Moscow, Russia
| | - G R Kalamkarov
- Emanuel Institute of Biochemical Physics, Russian Academy of Sciences, Moscow, Russia
| | - B S Shenkman
- Institute of Biomedical Problems of the Russian Academy of Sciences, Moscow, Russia
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2
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Glycogen Synthase Kinase 3β (GSK3β) Regulates Myogenic Differentiation in Skeletal Muscle Satellite Cells of Sheep. Animals (Basel) 2022; 12:ani12202789. [PMID: 36290175 PMCID: PMC9597728 DOI: 10.3390/ani12202789] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2022] [Revised: 09/25/2022] [Accepted: 10/11/2022] [Indexed: 01/24/2023] Open
Abstract
Glycogen synthase kinase 3β (GSK3β) has a vital role in the regulation of many cellular processes. However, the role of GSK3β in muscle cell differentiation in sheep remains unknown. In this study, we investigated the function of GSK3β in skeletal muscle satellite cells (SMSCs) of sheep. An overexpression of GSK3β significantly inhibited myotube formation as well as the mRNA levels of myogenic genes (MyoD, MyoG, MyHC1, and MyHC2a) in sheep SMSCs. SB216763 treatment had a time-course effect on the phosphorylation levels of sheep GSK3β. In addition, reducing the activity of GSK3β lead to the promotion of sheep SMSCs differentiation as well as the mRNA levels of myogenic genes (MyoD, MyoG, MyHC1, and MyHC2a). This study illustrated the function of GSK3β to inhibit myogenesis in sheep SMSCs, which provided evidence for studying the mechanisms involved in the regulation of sheep SMSCs differentiation by GSK3β.
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The role of eIF2 phosphorylation in cell and organismal physiology: new roles for well-known actors. Biochem J 2022; 479:1059-1082. [PMID: 35604373 DOI: 10.1042/bcj20220068] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2022] [Revised: 04/21/2022] [Accepted: 04/25/2022] [Indexed: 02/06/2023]
Abstract
Control of protein synthesis (mRNA translation) plays key roles in shaping the proteome and in many physiological, including homeostatic, responses. One long-known translational control mechanism involves phosphorylation of initiation factor, eIF2, which is catalysed by any one of four protein kinases, which are generally activated in response to stresses. They form a key arm of the integrated stress response (ISR). Phosphorylated eIF2 inhibits eIF2B (the protein that promotes exchange of eIF2-bound GDP for GTP) and thus impairs general protein synthesis. However, this mechanism actually promotes translation of certain mRNAs by virtue of specific features they possess. Recent work has uncovered many previously unknown features of this regulatory system. Several studies have yielded crucial insights into the structure and control of eIF2, including that eIF2B is regulated by several metabolites. Recent studies also reveal that control of eIF2 and the ISR helps determine organismal lifespan and surprising roles in sensing mitochondrial stresses and in controlling the mammalian target of rapamycin (mTOR). The latter effect involves an unexpected role for one of the eIF2 kinases, HRI. Phosphoproteomic analysis identified new substrates for another eIF2 kinase, Gcn2, which senses the availability of amino acids. Several genetic disorders arise from mutations in genes for eIF2α kinases or eIF2B (i.e. vanishing white matter disease, VWM and microcephaly, epileptic seizures, microcephaly, hypogenitalism, diabetes and obesity, MEHMO). Furthermore, the eIF2-mediated ISR plays roles in cognitive decline associated with Alzheimer's disease. New findings suggest potential therapeutic value in interfering with the ISR in certain settings, including VWM, for example by using compounds that promote eIF2B activity.
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Regulation and function of elF2B in neurological and metabolic disorders. Biosci Rep 2022; 42:231311. [PMID: 35579296 PMCID: PMC9208314 DOI: 10.1042/bsr20211699] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2021] [Revised: 04/28/2022] [Accepted: 05/12/2022] [Indexed: 11/27/2022] Open
Abstract
Eukaryotic initiation factor 2B, eIF2B is a guanine nucleotide exchange, factor with a central role in coordinating the initiation of translation. During stress and disease, the activity of eIF2B is inhibited via the phosphorylation of its substrate eIF2 (p-eIF2α). A number of different kinases respond to various stresses leading to the phosphorylation of the alpha subunit of eIF2, and collectively this regulation is known as the integrated stress response, ISR. This targeting of eIF2B allows the cell to regulate protein synthesis and reprogramme gene expression to restore homeostasis. Advances within structural biology have furthered our understanding of how eIF2B interacts with eIF2 in both the productive GEF active form and the non-productive eIF2α phosphorylated form. Here, current knowledge of the role of eIF2B in the ISR is discussed within the context of normal and disease states focusing particularly on diseases such as vanishing white matter disease (VWMD) and permanent neonatal diabetes mellitus (PNDM), which are directly linked to mutations in eIF2B. The role of eIF2B in synaptic plasticity and memory formation is also discussed. In addition, the cellular localisation of eIF2B is reviewed and considered along with the role of additional in vivo eIF2B binding factors and protein modifications that may play a role in modulating eIF2B activity during health and disease.
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The Role of GSK-3β in the Regulation of Protein Turnover, Myosin Phenotype, and Oxidative Capacity in Skeletal Muscle under Disuse Conditions. Int J Mol Sci 2021; 22:ijms22105081. [PMID: 34064895 PMCID: PMC8151958 DOI: 10.3390/ijms22105081] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2021] [Revised: 05/03/2021] [Accepted: 05/10/2021] [Indexed: 12/12/2022] Open
Abstract
Skeletal muscles, being one of the most abundant tissues in the body, are involved in many vital processes, such as locomotion, posture maintenance, respiration, glucose homeostasis, etc. Hence, the maintenance of skeletal muscle mass is crucial for overall health, prevention of various diseases, and contributes to an individual’s quality of life. Prolonged muscle inactivity/disuse (due to limb immobilization, mechanical ventilation, bedrest, spaceflight) represents one of the typical causes, leading to the loss of muscle mass and function. This disuse-induced muscle loss primarily results from repressed protein synthesis and increased proteolysis. Further, prolonged disuse results in slow-to-fast fiber-type transition, mitochondrial dysfunction and reduced oxidative capacity. Glycogen synthase kinase 3β (GSK-3β) is a key enzyme standing at the crossroads of various signaling pathways regulating a wide range of cellular processes. This review discusses various important roles of GSK-3β in the regulation of protein turnover, myosin phenotype, and oxidative capacity in skeletal muscles under disuse/unloading conditions and subsequent recovery. According to its vital functions, GSK-3β may represent a perspective therapeutic target in the treatment of muscle wasting induced by chronic disuse, aging, and a number of diseases.
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Tyganov SA, Mochalova E, Belova S, Sharlo K, Rozhkov S, Kalashnikov V, Turtikova O, Mirzoev T, Shenkman B. Plantar mechanical stimulation attenuates protein synthesis decline in disused skeletal muscle via modulation of nitric oxide level. Sci Rep 2021; 11:9806. [PMID: 33963253 PMCID: PMC8105341 DOI: 10.1038/s41598-021-89362-6] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2020] [Accepted: 04/19/2021] [Indexed: 01/04/2023] Open
Abstract
Both research conducted under microgravity conditions and ground-based space analog studies have shown that air pump-based plantar mechanical stimulation (PMS) of cutaneous mechanoreceptors of the sole of the foot is able to increase neuromuscular activity in the musculature of the lower limbs. This type of stimulation is able to attenuate unloading-induced skeletal muscle atrophy and impaired muscle function. The aim of the present study was to evaluate the effects of PMS on anabolic signaling pathways in rat soleus muscle following 7-day hindlimb suspension (HS) and to elucidate if the effects of PMS on anabolic processes would be NO-dependent. The soles of the feet were stimulated with a frequency of 1-s inflation/1-s deflation with a total of 20 min followed by 10 min rest. This cycle was repeated for 4 h each day. We observed a decrease in the soleus muscle mass after 7-day HS, which was not prevented by PMS. We also observed a decrease in slow-type fiber cross-sectional area (CSA) by 56%, which significantly exceeded a decrease (-22%) in fast-type fiber CSA. PMS prevented a reduction in slow-twitch fiber CSA, but had no effect on fast-twitch fiber CSA. PMS prevented a 63% decrease in protein synthesis after 7-day HS as well as changes in several key anabolic signaling regulators, such as p70S6k, 4E-BP1, GSK3β, eEF-2, p90RSK. PMS also prevented a decrease in the markers of translational capacity (18S and 28S rRNA, c-myc, 45S pre-rRNA). Some effects of PMS on anabolic signaling were altered due to NO-synthase inhibitor (L-NAME) administration. Thus, PMS is able to partially prevent atrophic processes in rat soleus muscle during 7-day HS, affecting slow-type muscle fibers. This effect is mediated by alterations in anabolic signaling pathways and may depend on NO-synthase activity.
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Affiliation(s)
- Sergey A Tyganov
- Myology Laboratory, Institute of Biomedical Problems RAS, Khoroshevskoe shosse 76a, Moscow, Russian Federation, 123007.
| | - Ekaterina Mochalova
- Myology Laboratory, Institute of Biomedical Problems RAS, Khoroshevskoe shosse 76a, Moscow, Russian Federation, 123007
| | - Svetlana Belova
- Myology Laboratory, Institute of Biomedical Problems RAS, Khoroshevskoe shosse 76a, Moscow, Russian Federation, 123007
| | - Kristina Sharlo
- Myology Laboratory, Institute of Biomedical Problems RAS, Khoroshevskoe shosse 76a, Moscow, Russian Federation, 123007
| | - Sergey Rozhkov
- Myology Laboratory, Institute of Biomedical Problems RAS, Khoroshevskoe shosse 76a, Moscow, Russian Federation, 123007
| | - Vitaliy Kalashnikov
- Myology Laboratory, Institute of Biomedical Problems RAS, Khoroshevskoe shosse 76a, Moscow, Russian Federation, 123007
| | - Olga Turtikova
- Myology Laboratory, Institute of Biomedical Problems RAS, Khoroshevskoe shosse 76a, Moscow, Russian Federation, 123007
| | - Timur Mirzoev
- Myology Laboratory, Institute of Biomedical Problems RAS, Khoroshevskoe shosse 76a, Moscow, Russian Federation, 123007
| | - Boris Shenkman
- Myology Laboratory, Institute of Biomedical Problems RAS, Khoroshevskoe shosse 76a, Moscow, Russian Federation, 123007
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Lithium Chloride Protects against Sepsis-Induced Skeletal Muscle Atrophy and Cancer Cachexia. Cells 2021; 10:cells10051017. [PMID: 33925786 PMCID: PMC8146089 DOI: 10.3390/cells10051017] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2021] [Revised: 04/22/2021] [Accepted: 04/23/2021] [Indexed: 12/19/2022] Open
Abstract
Inflammation-mediated skeletal muscle wasting occurs in patients with sepsis and cancer cachexia. Both conditions severely affect patient morbidity and mortality. Lithium chloride has previously been shown to enhance myogenesis and prevent certain forms of muscular dystrophy. However, to our knowledge, the effect of lithium chloride treatment on sepsis-induced muscle atrophy and cancer cachexia has not yet been investigated. In this study, we aimed to examine the effects of lithium chloride using in vitro and in vivo models of cancer cachexia and sepsis. Lithium chloride prevented wasting in myotubes cultured with cancer cell-conditioned media, maintained the expression of the muscle fiber contractile protein, myosin heavy chain 2, and inhibited the upregulation of the E3 ubiquitin ligase, Atrogin-1. In addition, it inhibited the upregulation of inflammation-associated cytokines in macrophages treated with lipopolysaccharide. In the animal model of sepsis, lithium chloride treatment improved body weight, increased muscle mass, preserved the survival of larger fibers, and decreased the expression of muscle-wasting effector genes. In a model of cancer cachexia, lithium chloride increased muscle mass, enhanced muscle strength, and increased fiber cross-sectional area, with no significant effect on tumor mass. These results indicate that lithium chloride exerts therapeutic effects on inflammation-mediated skeletal muscle wasting, such as sepsis-induced muscle atrophy and cancer cachexia.
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Pasadi S, Muniyappa K. Evidence for functional and regulatory cross-talk between Wnt/β-catenin signalling and Mre11-Rad50-Nbs1 complex in the repair of cisplatin-induced DNA cross-links. Oncotarget 2020; 11:4028-4044. [PMID: 33216839 PMCID: PMC7646826 DOI: 10.18632/oncotarget.27777] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2020] [Accepted: 09/10/2020] [Indexed: 12/12/2022] Open
Abstract
The canonical Wnt/β-catenin signalling pathway plays a crucial role in a variety of functions including cell proliferation and differentiation, tumorigenic processes and radioresistance in cancer cells. The Mre11–Rad50–Nbs1 (MRN) complex has a pivotal role in sensing and repairing DNA damage. However, it remains unclear whether a connection exists between Wnt/β-catenin signalling and the MRN complex in the repair of cisplatin-induced DNA interstrand cross-links (ICLs). Here, we report that (1) cisplatin exposure results in a significant increase in the levels of MRN complex subunits in human tumour cells; (2) cisplatin treatment stimulates Wnt/β-catenin signalling through increased β-catenin expression; (3) the functional perturbation of Wnt/β-catenin signalling results in aberrant cell cycle dynamics and the activation of DNA damage response and apoptosis; (4) a treatment with CHIR99021, a potent and selective GSK3β inhibitor, augments cisplatin-induced cell death in cancer cells. On the other hand, inactivation of the Wnt/β-catenin signalling with FH535 promotes cell survival. Consistently, the staining pattern of γH2AX-foci is significantly reduced in the cells exposed simultaneously to cisplatin and FH535; and (5) inhibition of Wnt/β-catenin signalling impedes cisplatin-induced phosphorylation of Chk1, abrogates the G2/M phase arrest and impairs recombination-based DNA repair. Our data further show that Wnt signalling positively regulates the expression of β-catenin, Mre11 and FANCD2 at early time points, but declining thereafter due to negative feedback regulation. These results support a model wherein Wnt/β-catenin signalling and MRN complex crosstalk during DNA ICL repair, thereby playing an important role in the maintenance of genome stability.
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Affiliation(s)
- Sanjeev Pasadi
- Department of Biochemistry, Indian Institute of Science, Bangalore 560012, India
| | - Kalappa Muniyappa
- Department of Biochemistry, Indian Institute of Science, Bangalore 560012, India
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9
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Ato S, Kido K, Sase K, Fujita S. Response of Resistance Exercise-Induced Muscle Protein Synthesis and Skeletal Muscle Hypertrophy Are Not Enhanced After Disuse Muscle Atrophy in Rat. Front Physiol 2020; 11:469. [PMID: 32528306 PMCID: PMC7258402 DOI: 10.3389/fphys.2020.00469] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2020] [Accepted: 04/16/2020] [Indexed: 01/26/2023] Open
Abstract
Skeletal muscle disuse rapidly decreases muscle mass. Resistance training (RT) is believed as the most effective way to gain muscle mass via an increase in mTORC1 activity and muscle protein synthesis (MPS). However, it remains unclear whether muscle atrophy by disuse alters the mTORC1 activation and MPS response to an acute resistance exercise (RE) and chronic RT-mediated skeletal muscle hypertrophy. This study investigated the influence of disuse muscle atrophy on the response of mTORC1 activation and MPS to an acute RE. We also evaluated whether disuse muscle atrophy affects the response of RT-induced muscle mass gain. Thirty male Sprague-Dawley rats were randomly divided into control (CON) or hindlimb suspension (HS) groups. A 14-day HS via the tail was used as the model for gastrocnemius muscle disuse in the HS group. Unilateral lower limb muscle contraction using by percutaneous electrical stimulation was used to mimic the stimuli of RE. Ten bouts of RE were performed in 3-week as chronic RT. Our results showed that MPS and mTORC1 activity was unchanged after HS at basal state. However, the ribosomal RNA (rRNA) level was reduced in HS rats compared to that in CON rats at basal state. MPS and rRNA increased in both HS and CON rats in response to acute RE to the same extent. However, the level of mTORC1 activation in response to an acute RE was significantly higher in HS than that in the CON group at 12 h after exercise, even though no difference was observed at 3 h after exercise. The 10-bout RT significantly increased gastrocnemius muscle mass in both CON and HS rats. The response of muscle hypertrophy did not differ between the groups. Therefore, MPS in response to acute RE and muscle hypertrophy in response to chronic RT were unaltered after disuse muscle atrophy.
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Affiliation(s)
- Satoru Ato
- Graduate School of Sport and Health Science, Ritsumeikan University, Shiga, Japan.,Department of Life Science and Applied Chemistry, Nagoya Institute of Technology, Nagoya, Japan
| | - Kohei Kido
- Graduate School of Sport and Health Science, Ritsumeikan University, Shiga, Japan.,Laboratory of Sports and Exercise Medicine, Graduate School of Human and Environmental Studies, Kyoto University, Kyoto, Japan
| | - Kohei Sase
- Graduate School of Sport and Health Science, Ritsumeikan University, Shiga, Japan
| | - Satoshi Fujita
- Graduate School of Sport and Health Science, Ritsumeikan University, Shiga, Japan
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Wang D, Yang Y, Zou X, Zheng Z, Zhang J. Curcumin ameliorates CKD-induced mitochondrial dysfunction and oxidative stress through inhibiting GSK-3β activity. J Nutr Biochem 2020; 83:108404. [PMID: 32531667 DOI: 10.1016/j.jnutbio.2020.108404] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2019] [Revised: 04/25/2020] [Accepted: 04/27/2020] [Indexed: 12/21/2022]
Abstract
Curcumin has been reported to attenuate muscle atrophy. However, the underling mechanism remains unclear. The aim of this study was to investigate whether curcumin could improve chronic kidney disease (CKD)-induced muscle atrophy and mitochondrial dysfunction by inhibiting glycogen synthase kinase-3β (GSK-3β) activity. The sham and CKD mice were fed either a control diet or an identical diet containing 0.04% curcumin for 12 weeks. The C2C12 myotubes were treated with H2O2 in the presence or absence of curcumin. In addition, wild-type and muscle-specific GSK-3β knockout (KO) CKD model mice were made by 5/6 nephrectomy, and the sham was regarded as control. Curcumin could exert beneficial effects, including weight maintenance and improved muscle function, increased mitochondrial biogenesis, alleviated mitochondrial dysfunction by increasing adenosine triphosphate levels, activities of mitochondrial electron transport chain complexes and basal mitochondrial respiration and suppressing mitochondrial membrane potential. In addition, curcumin modulated redox homeostasis by increasing antioxidant activity and suppressed mitochondrial oxidative stress. Moreover, the protective effects of curcumin had been found to be mediated via inhibiting GSK-3β activity in vitro and in vivo. Importantly, GSK-3β KO contributed to improved mitochondrial function, attenuated mitochondrial oxidative damage and augmented mitochondrial biogenesis in muscle of CKD. Overall, this study suggested that curcumin alleviated CKD-induced mitochondrial oxidative damage and mitochondrial dysfunction via inhibiting GSK-3β activity in skeletal muscle.
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Affiliation(s)
- Dongtao Wang
- Department of Traditional Chinese Medicine, Shenzhen Hospital, Southern Medical University, Shenzhen 5181000, Guangdong, China; School of Chinese Medicine, Southern Medical University, Shenzhen 510515, Guangdong, China; Department of the Ministry of Science and Technology, Guangxi International Zhuang Medicine Hospital, Nanning 530201, Guangxi , China; Department of Nephrology, Shenzhen Traditional Chinese Medicine Hospital, Guangzhou University of Traditional Chinese Medicine, Shenzhen 518033, Guangdong, China.
| | - Yajun Yang
- Department of Pharmacology, Guangdong Key Laboratory for R&D of Natural Drug, Guangdong Medical University, Zhanjiang 524023, Guangdong , China
| | - Xiaohu Zou
- Department of Traditional Chinese Medicine, Shenzhen Hospital, Southern Medical University, Shenzhen 5181000, Guangdong, China
| | - Zena Zheng
- Department of Traditional Chinese Medicine, Shenzhen Hospital, Southern Medical University, Shenzhen 5181000, Guangdong, China
| | - Jing Zhang
- Department of Traditional Chinese Medicine, Shenzhen Hospital, Southern Medical University, Shenzhen 5181000, Guangdong, China
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11
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Zhu PJ, Khatiwada S, Cui Y, Reineke LC, Dooling SW, Kim JJ, Li W, Walter P, Costa-Mattioli M. Activation of the ISR mediates the behavioral and neurophysiological abnormalities in Down syndrome. Science 2019; 366:843-849. [PMID: 31727829 PMCID: PMC7299149 DOI: 10.1126/science.aaw5185] [Citation(s) in RCA: 100] [Impact Index Per Article: 20.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2018] [Revised: 07/31/2019] [Accepted: 10/08/2019] [Indexed: 12/11/2022]
Abstract
Down syndrome (DS) is the most common genetic cause of intellectual disability. Protein homeostasis is essential for normal brain function, but little is known about its role in DS pathophysiology. In this study, we found that the integrated stress response (ISR)-a signaling network that maintains proteostasis-was activated in the brains of DS mice and individuals with DS, reprogramming translation. Genetic and pharmacological suppression of the ISR, by inhibiting the ISR-inducing double-stranded RNA-activated protein kinase or boosting the function of the eukaryotic translation initiation factor eIF2-eIF2B complex, reversed the changes in translation and inhibitory synaptic transmission and rescued the synaptic plasticity and long-term memory deficits in DS mice. Thus, the ISR plays a crucial role in DS, which suggests that tuning of the ISR may provide a promising therapeutic intervention.
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Affiliation(s)
- Ping Jun Zhu
- Department of Neuroscience, Baylor College of Medicine, Houston, TX, USA
- Memory and Brain Research Center, Baylor College of Medicine, Houston, TX, USA
| | - Sanjeev Khatiwada
- Department of Neuroscience, Baylor College of Medicine, Houston, TX, USA
- Memory and Brain Research Center, Baylor College of Medicine, Houston, TX, USA
- Verna and Marrs McLean Department of Biochemistry and Molecular Biology, Baylor College of Medicine, Houston, TX, USA
| | - Ya Cui
- Division of Biostatistics, Dan L Duncan Comprehensive Cancer Center, and Department of Molecular and Cellular Biology, Baylor College of Medicine, Houston, TX, USA
- Department of Biological Chemistry, University of California, Irvine, Irvine, CA, USA
| | - Lucas C Reineke
- Department of Neuroscience, Baylor College of Medicine, Houston, TX, USA
- Memory and Brain Research Center, Baylor College of Medicine, Houston, TX, USA
| | - Sean W Dooling
- Memory and Brain Research Center, Baylor College of Medicine, Houston, TX, USA
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX, USA
| | - Jean J Kim
- Division of Biostatistics, Dan L Duncan Comprehensive Cancer Center, and Department of Molecular and Cellular Biology, Baylor College of Medicine, Houston, TX, USA
- Stem Cells and Regenerative Medicine Center, Baylor College of Medicine, Houston, TX, USA
| | - Wei Li
- Division of Biostatistics, Dan L Duncan Comprehensive Cancer Center, and Department of Molecular and Cellular Biology, Baylor College of Medicine, Houston, TX, USA
- Department of Biological Chemistry, University of California, Irvine, Irvine, CA, USA
| | - Peter Walter
- Howard Hughes Medical Institute, University of California at San Francisco, San Francisco, CA, USA.
- Department of Biochemistry and Biophysics, University of California at San Francisco, San Francisco, CA, USA
| | - Mauro Costa-Mattioli
- Department of Neuroscience, Baylor College of Medicine, Houston, TX, USA.
- Memory and Brain Research Center, Baylor College of Medicine, Houston, TX, USA
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12
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Tyganov SA, Mochalova EP, Belova SP, Sharlo KA, Rozhkov SV, Vilchinskaya NA, Paramonova II, Mirzoev TM, Shenkman BS. Effects of Plantar Mechanical Stimulation on Anabolic and Catabolic Signaling in Rat Postural Muscle Under Short-Term Simulated Gravitational Unloading. Front Physiol 2019; 10:1252. [PMID: 31611819 PMCID: PMC6776874 DOI: 10.3389/fphys.2019.01252] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2019] [Accepted: 09/12/2019] [Indexed: 12/18/2022] Open
Abstract
It is known that plantar mechanical stimulation (PMS) is able to attenuate unloading-induced skeletal muscle atrophy and impaired muscle function. However, molecular mechanisms underlying the effect of PMS on skeletal muscle during unloading remain undefined. The aim of the study was to evaluate the effects of PMS on anabolic and catabolic signaling pathways in rat soleus at the early stages of mechanical unloading. Wistar rats were randomly assigned to ambulatory control, hindlimb suspension (HS) for 1 or 3 days, and HS for 1 or 3 days with PMS. The key anabolic and catabolic markers were assessed by western blotting and RT-PCR. Protein synthesis (PS) rate was estimated using SUnSET technique. PMS attenuated a 1-day HS-induced decrease in 4E-BP1, GSK-3β, and AMPK phosphorylation. PMS also partially prevented a decrease in PS, phosphorylation of GSK-3β, nNOS, and an increase in eEF2 phosphorylation after 3-day HS. PMS during 1- and 3-day HS prevented MuRF-1, but not MAFbx, upregulation but did not affect markers of ribosome biogenesis (18S + 28S rRNA, c-myc) as well as AKT phosphorylation. Thus, PMS during 3-day HS partially prevented a decrease in the global rate of PS in rat soleus muscle, which was accompanied by attenuation of MuRF-1 mRNA expression as well as changes in GSK-3β, nNOS, and eEF2 phosphorylation.
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Affiliation(s)
- Sergey A Tyganov
- Myology Laboratory, Institute of Biomedical Problems, Russian Academy of Sciences, Moscow, Russia
| | - Ekaterina P Mochalova
- Myology Laboratory, Institute of Biomedical Problems, Russian Academy of Sciences, Moscow, Russia
| | - Svetlana P Belova
- Myology Laboratory, Institute of Biomedical Problems, Russian Academy of Sciences, Moscow, Russia
| | - Kristina A Sharlo
- Myology Laboratory, Institute of Biomedical Problems, Russian Academy of Sciences, Moscow, Russia
| | - Sergey V Rozhkov
- Myology Laboratory, Institute of Biomedical Problems, Russian Academy of Sciences, Moscow, Russia
| | - Natalia A Vilchinskaya
- Myology Laboratory, Institute of Biomedical Problems, Russian Academy of Sciences, Moscow, Russia
| | - Inna I Paramonova
- Myology Laboratory, Institute of Biomedical Problems, Russian Academy of Sciences, Moscow, Russia
| | - Timur M Mirzoev
- Myology Laboratory, Institute of Biomedical Problems, Russian Academy of Sciences, Moscow, Russia
| | - Boris S Shenkman
- Myology Laboratory, Institute of Biomedical Problems, Russian Academy of Sciences, Moscow, Russia
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Wang L, Zhu Y, Liu X, Chao Z, Wang Y, Zhong T, Guo J, Zhan S, Li L, Zhang H. Glycogen synthase kinase 3β (GSK3β) regulates the expression of MyHC2a in goat skeletal muscle satellite cells (SMSCs). Anim Sci J 2019; 90:1042-1049. [PMID: 31237073 DOI: 10.1111/asj.13253] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2019] [Revised: 05/12/2019] [Accepted: 05/27/2019] [Indexed: 12/16/2022]
Abstract
Glycogen synthase kinase beta (GSK3β) plays an important role in skeletal muscle growth, regeneration, and repair. However, the mechanism of GSK3β regulating MyHC2a expression is currently not clear. In this study, GSK3β inhibition promoted skeletal muscle satellite cells (SMSCs) differentiation and increased expression of MyoD, MyoG, MyHC1, and MyHC2a genes. Then we cloned approximately 1.1 kb of goat MyHC2a gene promoter. The deletion fragment (-514/+55) of MyHC2a promoter exhibited the highest level of promoter activity, and a NFATc2 element in this region was responsible for MyHC2a promoter activity. Treatment of SB216713 significantly decreased the transcriptional activity of the fragment (-514/+55). Furthermore, GSK3β inhibition had no effect on the luciferase activity of MyHC2a promoter after mutating the NFATc2-binding site. These results demonstrated that GSK3β inhibition promoted SMSCs differentiation and regulated the MyHC2a gene expression through NFATc2 in goat-differentiated SMSCs.
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Affiliation(s)
- Linjie Wang
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, P.R. China
| | - Yuehua Zhu
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, P.R. China
| | - Xin Liu
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, P.R. China
| | - Zhe Chao
- Institute of Animal Science and Veterinary Medicine, Hainan Academy of Agricultural Sciences, Haikou, P.R. China
| | - Yan Wang
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, P.R. China
| | - Tao Zhong
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, P.R. China
| | - Jiazhong Guo
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, P.R. China
| | - Siyuan Zhan
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, P.R. China
| | - Li Li
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, P.R. China
| | - Hongping Zhang
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, P.R. China
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14
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Kowalski E, Geng S, Rathes A, Lu R, Li L. Toll-interacting protein differentially modulates HIF1α and STAT5-mediated genes in fibroblasts. J Biol Chem 2018; 293:12239-12247. [PMID: 29921584 DOI: 10.1074/jbc.ra118.003382] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2018] [Revised: 06/11/2018] [Indexed: 11/06/2022] Open
Abstract
Toll-interacting protein (Tollip) deficiency has been implicated in complex inflammatory and infectious diseases whose mechanisms are poorly understood. Comparing the gene expression profiles of WT and Tollip-deficient murine embryonic fibroblasts, we observed here that Tollip deficiency selectively reduces the expression of the inflammatory cytokines interleukin 6 (IL-6), IL-12, and tumor necrosis factor α (TNFα) but potentiates the expression of fatty acid-binding protein 4 (FABP4) in these cells. We also observed that expression of hypoxia-inducible factor 1-α (HIF1α) is reduced, whereas that of signal transducer and activator of transcription 5 (STAT5) is elevated, in Tollip-deficient cells, correlating with the decreased expression of inflammatory cytokines and increased expression of FABP4 in these cells. We further found that the coupling of ubiquitin to ER degradation (CUE) domain of Tollip is required for stimulating HIF1α activity, because Tollip CUE-domain mutant cells exhibited reduced levels of HIF1α and selected cytokines. Tollip is known to mediate autophagy and lysosome fusion, and herein we observed that Tollip's autophagy function is required for modulating STAT5 and FABP4 expression. Bafilomycin A, an inhibitor of lysosome fusion, enhanced STAT5 and FABP4 expression in WT fibroblasts, whereas torin 2, an activator of autophagy, reduced STAT5 and FABP4 expression in Tollip-deficient fibroblasts. Taken together, our study reveals that Tollip differentially modulates HIF1α and STAT5 expression in fibroblasts, potentially explaining the complex and context-dependent contribution of Tollip to disease development.
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Affiliation(s)
- Elizabeth Kowalski
- Department of Biological Sciences and Biochemistry, Virginia Tech, Blacksburg, Virginia 24061
| | - Shuo Geng
- Department of Biological Sciences and Biochemistry, Virginia Tech, Blacksburg, Virginia 24061
| | - Allison Rathes
- Department of Biological Sciences and Biochemistry, Virginia Tech, Blacksburg, Virginia 24061
| | - Ran Lu
- Department of Biological Sciences and Biochemistry, Virginia Tech, Blacksburg, Virginia 24061
| | - Liwu Li
- Department of Biological Sciences and Biochemistry, Virginia Tech, Blacksburg, Virginia 24061.
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15
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Sarikhani M, Mishra S, Maity S, Kotyada C, Wolfgeher D, Gupta MP, Singh M, Sundaresan NR. SIRT2 deacetylase regulates the activity of GSK3 isoforms independent of inhibitory phosphorylation. eLife 2018; 7:32952. [PMID: 29504933 PMCID: PMC5860870 DOI: 10.7554/elife.32952] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2017] [Accepted: 03/02/2018] [Indexed: 12/28/2022] Open
Abstract
Glycogen synthase kinase 3 (GSK3) is a critical regulator of diverse cellular functions involved in the maintenance of structure and function. Enzymatic activity of GSK3 is inhibited by N-terminal serine phosphorylation. However, alternate post-translational mechanism(s) responsible for GSK3 inactivation are not characterized. Here, we report that GSK3α and GSK3β are acetylated at Lys246 and Lys183, respectively. Molecular modeling and/or molecular dynamics simulations indicate that acetylation of GSK3 isoforms would hinder both the adenosine binding and prevent stable interactions of the negatively charged phosphates. We found that SIRT2 deacetylates GSK3β, and thus enhances its binding to ATP. Interestingly, the reduced activity of GSK3β is associated with lysine acetylation, but not with phosphorylation at Ser9 in hearts of SIRT2-deficient mice. Moreover, GSK3 is required for the anti-hypertrophic function of SIRT2 in cardiomyocytes. Overall, our study identified lysine acetylation as a novel post-translational modification regulating GSK3 activity.
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Affiliation(s)
- Mohsen Sarikhani
- Department of Microbiology and Cell Biology, Indian Institute of Science, Bengaluru, India
| | - Sneha Mishra
- Department of Microbiology and Cell Biology, Indian Institute of Science, Bengaluru, India
| | - Sangeeta Maity
- Department of Microbiology and Cell Biology, Indian Institute of Science, Bengaluru, India
| | - Chaithanya Kotyada
- Molecular Biophysics Unit, Indian Institute of Science, Bengaluru, India
| | - Donald Wolfgeher
- Department of Molecular Genetics and Cell biology, University of Chicago, Chicago, United States
| | - Mahesh P Gupta
- Department of Surgery, University of Chicago, Chicago, United States
| | - Mahavir Singh
- Molecular Biophysics Unit, Indian Institute of Science, Bengaluru, India
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16
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Sun W, Xu G, Guo X, Luo G, Wu L, Hou Y, Guo X, Zhou J, Xu T, Qin L, Fan Y, Han L, Matsabisa M, Ma X, Liu T. Protective effects of asiatic acid in a spontaneous type 2 diabetic mouse model. Mol Med Rep 2017; 16:1333-1339. [PMID: 28586016 PMCID: PMC5562101 DOI: 10.3892/mmr.2017.6684] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2016] [Accepted: 05/26/2017] [Indexed: 12/17/2022] Open
Abstract
Asiatic acid (AA) has been demonstrated to exhibit anti-diabetic activity. However, the mechanisms and underlying signaling pathways remain to be elucidated. The present study was performed to confirm the protective effect of AA and demonstrate its ability to regulate the phosphatidylinositol 3-kinase (PI3K)/protein kinase B (AKT)/glycogen synthase kinase-3β (GSK-3β) signaling pathway in db/db mice. Db/db mice fed on a high-fat diet were used to model diabetes mellitus. Modeled mice were divided randomly into the model control, pioglitazone hydrochloride tablet (PH) and AA groups. Age-matched C57 BL/6J mice served as normal controls. Lipid and glucose levels, and glycogen synthesis rates were assessed following treatment. Pathological changes were detected using hematoxylin and eosin staining. Expression of the PI3K/AKT/GSK-3β signaling pathway at the mRNA level was measured using quantitative polymerase chain reaction analysis. The model control group revealed typical characteristics of obesity and diabetes, including high glucose and lipid levels, and decreased glycogen synthesis. Four weeks of treatment with AA or PH ameliorated these abnormalities. AA and PH treatments mitigated the upregulation of PI3K, AKT, insulin receptor, and insulin receptor substrate-1 mRNA expression in modeled mice. Furthermore, AA and PH treatments decreased GSK-3β and glucose-6-phosphatase mRNA expression compared with the normal control group. The results of the present study confirmed that AA possesses anti-diabetic activity in db/db mice. The PI3K/AKT/GSK-3β signaling pathway may mediate this protective effect.
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Affiliation(s)
- Wen Sun
- Key Laboratory of Health Cultivation of the Ministry of Education, Beijing University of Chinese Medicine, Beijing 100029, P.R. China
| | - Guangyuan Xu
- Department of Endocrinology, Dongfang Hospital of Beijing University of Chinese Medicine, Beijing 100078, P.R. China
| | - Xuan Guo
- Department of Endocrinology, Dongfang Hospital of Beijing University of Chinese Medicine, Beijing 100078, P.R. China
| | - Guangbin Luo
- School of Basic Medical Sciences, Beijing University of Chinese Medicine, Beijing 100029, P.R. China
| | - Lili Wu
- Key Laboratory of Health Cultivation of the Ministry of Education, Beijing University of Chinese Medicine, Beijing 100029, P.R. China
| | - Yi Hou
- Department of Endocrinology, Dongfang Hospital of Beijing University of Chinese Medicine, Beijing 100078, P.R. China
| | - Xiangyu Guo
- Department of Endocrinology, Dongfang Hospital of Beijing University of Chinese Medicine, Beijing 100078, P.R. China
| | - Jingxin Zhou
- Endocrinology Department, Dongzhimen Hospital, Beijing University of Chinese Medicine, Beijing 101100, P.R. China
| | - Tunhai Xu
- School of Chinese Pharmacy, Beijing University of Chinese Medicine, Beijing 100029, P.R. China
| | - Lingling Qin
- Department of Science and Technology, Beijing University of Chinese Medicine, Beijing 100029, P.R. China
| | - Yixin Fan
- Department of Science and Technology, Beijing University of Chinese Medicine, Beijing 100029, P.R. China
| | - Li Han
- Key Laboratory of Health Cultivation of the Ministry of Education, Beijing University of Chinese Medicine, Beijing 100029, P.R. China
| | - Motlalepula Matsabisa
- School of Natural Medicine, University of The Western Cape, Cape Town 7535, South Africa
| | - Xuesheng Ma
- School of Natural Medicine, University of The Western Cape, Cape Town 7535, South Africa
| | - Tonghua Liu
- Key Laboratory of Health Cultivation of the Ministry of Education, Beijing University of Chinese Medicine, Beijing 100029, P.R. China
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17
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Duan Q, Reid SP, Clark NR, Wang Z, Fernandez NF, Rouillard AD, Readhead B, Tritsch SR, Hodos R, Hafner M, Niepel M, Sorger PK, Dudley JT, Bavari S, Panchal RG, Ma'ayan A. L1000CDS 2: LINCS L1000 characteristic direction signatures search engine. NPJ Syst Biol Appl 2016; 2. [PMID: 28413689 PMCID: PMC5389891 DOI: 10.1038/npjsba.2016.15] [Citation(s) in RCA: 203] [Impact Index Per Article: 25.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
The library of integrated network-based cellular signatures (LINCS) L1000 data set currently comprises of over a million gene expression profiles of chemically perturbed human cell lines. Through unique several intrinsic and extrinsic benchmarking schemes, we demonstrate that processing the L1000 data with the characteristic direction (CD) method significantly improves signal to noise compared with the MODZ method currently used to compute L1000 signatures. The CD processed L1000 signatures are served through a state-of-the-art web-based search engine application called L1000CDS2. The L1000CDS2 search engine provides prioritization of thousands of small-molecule signatures, and their pairwise combinations, predicted to either mimic or reverse an input gene expression signature using two methods. The L1000CDS2 search engine also predicts drug targets for all the small molecules profiled by the L1000 assay that we processed. Targets are predicted by computing the cosine similarity between the L1000 small-molecule signatures and a large collection of signatures extracted from the gene expression omnibus (GEO) for single-gene perturbations in mammalian cells. We applied L1000CDS2 to prioritize small molecules that are predicted to reverse expression in 670 disease signatures also extracted from GEO, and prioritized small molecules that can mimic expression of 22 endogenous ligand signatures profiled by the L1000 assay. As a case study, to further demonstrate the utility of L1000CDS2, we collected expression signatures from human cells infected with Ebola virus at 30, 60 and 120 min. Querying these signatures with L1000CDS2 we identified kenpaullone, a GSK3B/CDK2 inhibitor that we show, in subsequent experiments, has a dose-dependent efficacy in inhibiting Ebola infection in vitro without causing cellular toxicity in human cell lines. In summary, the L1000CDS2 tool can be applied in many biological and biomedical settings, while improving the extraction of knowledge from the LINCS L1000 resource.
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Affiliation(s)
- Qiaonan Duan
- Department of Pharmacology and Systems Therapeutics, Icahn School of Medicine at Mount Sinai, New York, NY, USA.,Department of Genetics and Genomics Science, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - St Patrick Reid
- US Army Medical Research Institute of Infectious Diseases, Frederick, MD, USA
| | - Neil R Clark
- Department of Pharmacology and Systems Therapeutics, Icahn School of Medicine at Mount Sinai, New York, NY, USA.,Department of Genetics and Genomics Science, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Zichen Wang
- Department of Pharmacology and Systems Therapeutics, Icahn School of Medicine at Mount Sinai, New York, NY, USA.,Department of Genetics and Genomics Science, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Nicolas F Fernandez
- Department of Pharmacology and Systems Therapeutics, Icahn School of Medicine at Mount Sinai, New York, NY, USA.,Department of Genetics and Genomics Science, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Andrew D Rouillard
- Department of Pharmacology and Systems Therapeutics, Icahn School of Medicine at Mount Sinai, New York, NY, USA.,Department of Genetics and Genomics Science, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Ben Readhead
- Department of Genetics and Genomics Science, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Sarah R Tritsch
- US Army Medical Research Institute of Infectious Diseases, Frederick, MD, USA
| | - Rachel Hodos
- Department of Genetics and Genomics Science, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Marc Hafner
- Department of Systems Biology, Harvard Medical School, Boston, MA, USA
| | - Mario Niepel
- Department of Systems Biology, Harvard Medical School, Boston, MA, USA
| | - Peter K Sorger
- Department of Systems Biology, Harvard Medical School, Boston, MA, USA
| | - Joel T Dudley
- Department of Genetics and Genomics Science, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Sina Bavari
- US Army Medical Research Institute of Infectious Diseases, Frederick, MD, USA
| | - Rekha G Panchal
- US Army Medical Research Institute of Infectious Diseases, Frederick, MD, USA
| | - Avi Ma'ayan
- Department of Pharmacology and Systems Therapeutics, Icahn School of Medicine at Mount Sinai, New York, NY, USA.,Department of Genetics and Genomics Science, Icahn School of Medicine at Mount Sinai, New York, NY, USA
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18
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YU YONGHUI, CHU WANLI, CHAI JIAKE, LI XIAO, LIU LINGYING, MA LI. Critical role of miRNAs in mediating skeletal muscle atrophy (Review). Mol Med Rep 2015; 13:1470-4. [DOI: 10.3892/mmr.2015.4748] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2015] [Accepted: 12/08/2015] [Indexed: 11/05/2022] Open
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19
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Friedrich O, Reid MB, Van den Berghe G, Vanhorebeek I, Hermans G, Rich MM, Larsson L. The Sick and the Weak: Neuropathies/Myopathies in the Critically Ill. Physiol Rev 2015; 95:1025-109. [PMID: 26133937 PMCID: PMC4491544 DOI: 10.1152/physrev.00028.2014] [Citation(s) in RCA: 216] [Impact Index Per Article: 24.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Critical illness polyneuropathies (CIP) and myopathies (CIM) are common complications of critical illness. Several weakness syndromes are summarized under the term intensive care unit-acquired weakness (ICUAW). We propose a classification of different ICUAW forms (CIM, CIP, sepsis-induced, steroid-denervation myopathy) and pathophysiological mechanisms from clinical and animal model data. Triggers include sepsis, mechanical ventilation, muscle unloading, steroid treatment, or denervation. Some ICUAW forms require stringent diagnostic features; CIM is marked by membrane hypoexcitability, severe atrophy, preferential myosin loss, ultrastructural alterations, and inadequate autophagy activation while myopathies in pure sepsis do not reproduce marked myosin loss. Reduced membrane excitability results from depolarization and ion channel dysfunction. Mitochondrial dysfunction contributes to energy-dependent processes. Ubiquitin proteasome and calpain activation trigger muscle proteolysis and atrophy while protein synthesis is impaired. Myosin loss is more pronounced than actin loss in CIM. Protein quality control is altered by inadequate autophagy. Ca(2+) dysregulation is present through altered Ca(2+) homeostasis. We highlight clinical hallmarks, trigger factors, and potential mechanisms from human studies and animal models that allow separation of risk factors that may trigger distinct mechanisms contributing to weakness. During critical illness, altered inflammatory (cytokines) and metabolic pathways deteriorate muscle function. ICUAW prevention/treatment is limited, e.g., tight glycemic control, delaying nutrition, and early mobilization. Future challenges include identification of primary/secondary events during the time course of critical illness, the interplay between membrane excitability, bioenergetic failure and differential proteolysis, and finding new therapeutic targets by help of tailored animal models.
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Affiliation(s)
- O Friedrich
- Institute of Medical Biotechnology, Department of Chemical and Biological Engineering, Friedrich-Alexander-University Erlangen-Nuremberg, Erlangen, Germany; College of Health and Human Performance, University of Florida, Gainesville, Florida; Clinical Department and Laboratory of Intensive Care Medicine, Division of Cellular and Molecular Medicine, KU Leuven, Leuven, Belgium; Department of Neuroscience, Cell Biology and Physiology, Wright State University, Dayton, Ohio; and Department of Physiology and Pharmacology, Department of Clinical Neuroscience, Clinical Neurophysiology, Karolinska Institutet, Stockholm, Sweden
| | - M B Reid
- Institute of Medical Biotechnology, Department of Chemical and Biological Engineering, Friedrich-Alexander-University Erlangen-Nuremberg, Erlangen, Germany; College of Health and Human Performance, University of Florida, Gainesville, Florida; Clinical Department and Laboratory of Intensive Care Medicine, Division of Cellular and Molecular Medicine, KU Leuven, Leuven, Belgium; Department of Neuroscience, Cell Biology and Physiology, Wright State University, Dayton, Ohio; and Department of Physiology and Pharmacology, Department of Clinical Neuroscience, Clinical Neurophysiology, Karolinska Institutet, Stockholm, Sweden
| | - G Van den Berghe
- Institute of Medical Biotechnology, Department of Chemical and Biological Engineering, Friedrich-Alexander-University Erlangen-Nuremberg, Erlangen, Germany; College of Health and Human Performance, University of Florida, Gainesville, Florida; Clinical Department and Laboratory of Intensive Care Medicine, Division of Cellular and Molecular Medicine, KU Leuven, Leuven, Belgium; Department of Neuroscience, Cell Biology and Physiology, Wright State University, Dayton, Ohio; and Department of Physiology and Pharmacology, Department of Clinical Neuroscience, Clinical Neurophysiology, Karolinska Institutet, Stockholm, Sweden
| | - I Vanhorebeek
- Institute of Medical Biotechnology, Department of Chemical and Biological Engineering, Friedrich-Alexander-University Erlangen-Nuremberg, Erlangen, Germany; College of Health and Human Performance, University of Florida, Gainesville, Florida; Clinical Department and Laboratory of Intensive Care Medicine, Division of Cellular and Molecular Medicine, KU Leuven, Leuven, Belgium; Department of Neuroscience, Cell Biology and Physiology, Wright State University, Dayton, Ohio; and Department of Physiology and Pharmacology, Department of Clinical Neuroscience, Clinical Neurophysiology, Karolinska Institutet, Stockholm, Sweden
| | - G Hermans
- Institute of Medical Biotechnology, Department of Chemical and Biological Engineering, Friedrich-Alexander-University Erlangen-Nuremberg, Erlangen, Germany; College of Health and Human Performance, University of Florida, Gainesville, Florida; Clinical Department and Laboratory of Intensive Care Medicine, Division of Cellular and Molecular Medicine, KU Leuven, Leuven, Belgium; Department of Neuroscience, Cell Biology and Physiology, Wright State University, Dayton, Ohio; and Department of Physiology and Pharmacology, Department of Clinical Neuroscience, Clinical Neurophysiology, Karolinska Institutet, Stockholm, Sweden
| | - M M Rich
- Institute of Medical Biotechnology, Department of Chemical and Biological Engineering, Friedrich-Alexander-University Erlangen-Nuremberg, Erlangen, Germany; College of Health and Human Performance, University of Florida, Gainesville, Florida; Clinical Department and Laboratory of Intensive Care Medicine, Division of Cellular and Molecular Medicine, KU Leuven, Leuven, Belgium; Department of Neuroscience, Cell Biology and Physiology, Wright State University, Dayton, Ohio; and Department of Physiology and Pharmacology, Department of Clinical Neuroscience, Clinical Neurophysiology, Karolinska Institutet, Stockholm, Sweden
| | - L Larsson
- Institute of Medical Biotechnology, Department of Chemical and Biological Engineering, Friedrich-Alexander-University Erlangen-Nuremberg, Erlangen, Germany; College of Health and Human Performance, University of Florida, Gainesville, Florida; Clinical Department and Laboratory of Intensive Care Medicine, Division of Cellular and Molecular Medicine, KU Leuven, Leuven, Belgium; Department of Neuroscience, Cell Biology and Physiology, Wright State University, Dayton, Ohio; and Department of Physiology and Pharmacology, Department of Clinical Neuroscience, Clinical Neurophysiology, Karolinska Institutet, Stockholm, Sweden
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20
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Rahmati M, Taherabadi SJ, Mehrabi M. Decreased Activity in Neuropathic Pain Form and Gene Expression of Cyclin-Dependent Kinase5 and Glycogen Synthase Kinase-3 Beta in Soleus Muscle of Wistar Male Rats. IRANIAN RED CRESCENT MEDICAL JOURNAL 2015; 17:e23324. [PMID: 26290750 PMCID: PMC4537785 DOI: 10.5812/ircmj.23324] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/06/2014] [Revised: 11/18/2014] [Accepted: 03/25/2015] [Indexed: 02/07/2023]
Abstract
BACKGROUND The relationship between decreased activity/neuropathic pain and gene expression alterations in soleus muscle has remained elusive. OBJECTIVES In this experimental study, we investigated the effects of decreased activity in neuropathic pain form on Cyclin-Dependent Kinase 5 (CDK5) and Glycogen Synthase Kinase-3 β (GSK-3β) gene expression in soleus muscle of rats. MATERIALS AND METHODS Twelve male Wistar rats were randomly divided into three groups: (1) tight ligation of the L5 spinal nerve (SNL: n = 4); (2) sham surgery (Sham: n = 4), and (3) control (C: n = 4). The threshold to produce a withdrawal response to a mechanical and thermal stimulus was measured using von Frey filaments and radiation heat apparatus, respectively. Following 4 weeks after surgery, the left soleus muscle was removed and mRNA levels were determined by real-time Polymerase Chain Reaction (PCR). RESULTS Compared to control animals, L5 ligated animals developed mechanical and heat hypersensitivity during total period of study. Soleus muscle weight as well as CDK5 mRNA levels (less than ~ 0.4 fold) was decreased and GSK-3β mRNA levels (up to ~ 7 folds) increased in L5 ligated animals. CONCLUSIONS These results showed enhanced muscle atrophy processes following peripheral nerve damage and might provide a useful approach to study underlying muscle mechanisms associated with clinical neuropathic pain syndromes.
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Affiliation(s)
- Masoud Rahmati
- Department of Physical Education and Sport Sciences, Lorestan University, Khoram Abad, IR Iran
- Corresponding Author: Masoud Rahmati, Department of Physical Education and Sport Sciences, Lorestan University, Khoram Abad, IR Iran. Tel: +98-9124525538, Fax: +98-6614215393, E-mail:
| | - Seyed Jalal Taherabadi
- Department of Physical Education and Sport Sciences, Lorestan University, Khoram Abad, IR Iran
| | - Mahmoud Mehrabi
- Department of Physical Education and Sport Sciences, Lorestan University, Khoram Abad, IR Iran
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21
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Plotnikov EY, Silachev DN, Zorova LD, Pevzner IB, Jankauskas SS, Zorov SD, Babenko VA, Skulachev MV, Zorov DB. Lithium salts — Simple but magic. BIOCHEMISTRY (MOSCOW) 2014; 79:740-9. [DOI: 10.1134/s0006297914080021] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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22
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Wang H, Kumar A, Lamont RJ, Scott DA. GSK3β and the control of infectious bacterial diseases. Trends Microbiol 2014; 22:208-17. [PMID: 24618402 DOI: 10.1016/j.tim.2014.01.009] [Citation(s) in RCA: 58] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2013] [Revised: 01/24/2014] [Accepted: 01/30/2014] [Indexed: 12/12/2022]
Abstract
Glycogen synthase kinase 3β (GSK3β) has been shown to be a crucial mediator of the intensity and direction of the innate immune system response to bacterial stimuli. This review focuses on: (i) the central role of GSK3β in the regulation of pathogen-induced inflammatory responses through the regulation of pro- and anti-inflammatory cytokine production, (ii) the extensive ongoing efforts to exploit GSK3β for its therapeutic potential in the control of infectious diseases, and (iii) the increasing evidence that specific pathogens target GSK3β-related pathways for immune evasion. A better understanding of complex bacteria-GSK3β interactions is likely to lead to more effective anti-inflammatory interventions and novel targets to circumvent pathogen colonization and survival.
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Affiliation(s)
- Huizhi Wang
- Oral Health and Systemic Disease, University of Louisville, Louisville, KY 40292, USA
| | - Akhilesh Kumar
- Oral Health and Systemic Disease, University of Louisville, Louisville, KY 40292, USA
| | - Richard J Lamont
- Oral Health and Systemic Disease, University of Louisville, Louisville, KY 40292, USA; Microbiology and Immunology, University of Louisville, Louisville, KY 40292, USA
| | - David A Scott
- Oral Health and Systemic Disease, University of Louisville, Louisville, KY 40292, USA; Microbiology and Immunology, University of Louisville, Louisville, KY 40292, USA.
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23
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Abed A, Minaiyan M, Mahzouni P. Possible beneficial effects of lithium chloride on cerulein-induced acute pancreatitis in mice. Res Pharm Sci 2014; 9:135-41. [PMID: 25657782 PMCID: PMC4311291] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
One of the most important and serious disorders of gastrointestinal tract is acute pancreatitis which in severe form is associated with high mortality rate particularly in the presence of systemic inflammatory response and multiple organ failure. Apoptosis linked to oxidative stress has been shown in the pancreas of the patients with acute pancreatitis. Lithium, one of the most effective drugs for the treatment of bipolar disorder, also has dramatic effects on preventing cell damage and apoptosis. Also lithium has shown anti-inflammatory effects in some animal studies. This study was designed to investigate the possible effect of lithium chloride in acute pancreatitis. Induction of acute pancreatitis was performed in male mice (25-30 g) by five intraperitoneal (i.p.) injection of cerulein (50 μg/kg) with 1 h intervals. Lithium chloride (10, 20 and 30 mg/kg) was administered i.p. 15 min before the induction of pancreatitis. Six h after the last injection of cerulein, the animals were sacrificed and biochemical as well as histopathological analysis was performed. Pretreatment with 20 mg/kg i.p. of lithium chloride reduced significantly the inflammatory response in cerulein-induced acute pancreatitis by ameliorating pancreatic edema and leukocyte infiltration, attenuating amylase and lipase serum levels, and myeloperoxidase activity compared to control group (p<0.05). Two other administered doses namely 10 and 30 mg/kg were found ineffective. In this study our findings demonstrate that lithium can dose dependently exhibit protective effect against cerulein-induced acute pancreatitis.
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Affiliation(s)
- A. Abed
- Department of Pharmacology & Toxicology and Isfahan Pharmaceutical Sciences Research Center, School of Pharmacy and Pharmaceutical Sciences, Isfahan University of Medical Sciences, Isfahan, I.R. Iran
| | - M. Minaiyan
- Department of Pharmacology & Toxicology and Isfahan Pharmaceutical Sciences Research Center, School of Pharmacy and Pharmaceutical Sciences, Isfahan University of Medical Sciences, Isfahan, I.R. Iran,Corresponding author: M. Minaiyan Tel. 0098 311 792 2623, Fax. 0098 311 6680011
| | - P. Mahzouni
- Department of Clinical Pathology, School of Medicine, Isfahan University of Medical Sciences, Isfahan, I.R. Iran
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Abstract
The Wnt/β-catenin signaling pathway is well characterized in stem cell biology and plays a critical role in liver development, regeneration, and homeostasis. We hypothesized that pharmacologic activation of Wnt signaling protects against hepatic ischemia/reperfusion (I/R) injury through its known proliferative and antiapoptotic properties. Sprague-Dawley rats underwent 70% hepatic ischemia by microvascular clamping of the hilum of the left and median lobes of the liver for 90 min, followed by reperfusion. Wnt agonist (2-amino-4-[3,4-(methylenedioxy)benzylamino]-6-(3-methoxyphenyl)pyrimidine, 5 mg/kg body weight) or vehicle (20% dimethyl sulfoxide in saline) in 0.5 mL was injected i.p. 1 h before ischemia or infused i.v. over 30 min right after ischemia. Blood and tissue samples from the pretreated groups were collected 24 h after reperfusion, and a survival study was performed. Hepatic expression of β-catenin and its downstream target gene Axin2 were decreased after I/R, whereas Wnt agonist restored their expression to sham levels. Wnt agonist blunted I/R-induced elevations of aspartate aminotransferase, alanine aminotransferase, and lactate dehydrogenase and significantly improved the microarchitecture of the liver. The cell proliferation determined by Ki67 immunostaining significantly increased with Wnt agonist treatment, and inflammatory cascades were dampened in Wnt agonist-treated animals, as demonstrated by attenuations in interleukin 6, myeloperoxidase, inducible nitric oxide synthase, and nitrotyrosine. Wnt agonist also significantly decreased the amount of apoptosis, as evidenced by decreases in both TUNEL (terminal deoxynucleotidyl transferase dUTP nick end labeling) staining as well as caspase 3 activity levels. Finally, the 10-day survival rate was increased from 27% in the vehicle group to 73% in the pretreated Wnt agonist group and 55% in the Wnt agonist postischemia treatment group. Thus, we propose that direct Wnt/β-catenin stimulation may represent a novel therapeutic approach in the treatment of hepatic I/R.
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Albayrak A, Halici Z, Polat B, Karakus E, Cadirci E, Bayir Y, Kunak S, Karcioglu SS, Yigit S, Unal D, Atamanalp SS. Protective effects of lithium: A new look at an old drug with potential antioxidative and anti-inflammatory effects in an animal model of sepsis. Int Immunopharmacol 2013; 16:35-40. [DOI: 10.1016/j.intimp.2013.03.018] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2012] [Revised: 03/01/2013] [Accepted: 03/15/2013] [Indexed: 12/12/2022]
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What's New in SHOCK, March 2011? Shock 2011; 35:217-9. [DOI: 10.1097/shk.0b013e31820ae8aa] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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