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Park DS, Na MH, Jeong MH, Sim DS, Jin YJ, Kee HJ, Kim MK, Kim JH, Hong YJ, Cho KH, Hyun DY, Oh S, Lim KS, Byeon DH, Kim JH. Efficacy and Safety Evaluation of Tacrolimus-Eluting Stent in a Porcine Coronary Artery Model. Tissue Eng Regen Med 2024; 21:723-735. [PMID: 38834902 PMCID: PMC11187055 DOI: 10.1007/s13770-024-00646-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2023] [Revised: 03/16/2024] [Accepted: 04/21/2024] [Indexed: 06/06/2024] Open
Abstract
BACKGROUND A drug-eluting stent (DES) is a highly beneficial medical device used to widen or unblock narrowed blood vessels. However, the drugs released by the implantation of DES may hinder the re-endothelialization process, increasing the risk of late thrombosis. We have developed a tacrolimus-eluting stent (TES) that as acts as a potent antiproliferative and immunosuppressive agent, enhancing endothelial regeneration. In addition, we assessed the safety and efficacy of TES through both in vitro and in vivo tests. METHODS Tacrolimus and Poly(lactic-co-glycolic acid) (PLGA) were applied to the metal stent using electrospinning equipment. The surface morphology of the stent was examined before and after coating using a scanning electron microscope (SEM) and energy dispersive X-rays (EDX). The drug release test was conducted through high-performance liquid chromatography (HPLC). Cell proliferation and migration assays were performed using smooth muscle cells (SMC). The stent was then inserted into the porcine coronary artery and monitored for a duration of 4 weeks. RESULTS SEM analysis confirmed that the coating surface was uniform. Furthermore, EDX analysis showed that the surface was coated with both polymer and drug components. The HPCL analysis of TCL at a wavelength of 215 nm revealed that the drug was continuously released over a period of 4 weeks. Smooth muscle cell migration was significantly decreased in the tacrolimus group (54.1% ± 11.90%) compared to the non-treated group (90.1% ± 4.86%). In animal experiments, the stenosis rate was significantly reduced in the TES group (29.6% ± 7.93%) compared to the bare metal stent group (41.3% ± 10.18%). Additionally, the fibrin score was found to be lower in the TES group compared to the group treated with a sirolimus-eluting stent (SES). CONCLUSION Similar to SES, TES reduces neointimal proliferation in a porcine coronary artery model, specifically decreasing the fibrins score. Therefore, tacrolimus could be considered a promising drug for reducing restenosis and thrombosis.
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Affiliation(s)
- Dae Sung Park
- The Korea Cardiovascular Stent Research Institute, Chonnam National University, Gwangju, Korea
- The Cardiovascular Convergence Research Center of Chonnam National University Hospital Designated by Korea Ministry of Health and Welfare, Gwangju, Korea
- The Research Institute of Medical Sciences, Chonnam National University, Gwangju, Korea
| | - Mi Hyang Na
- The Korea Cardiovascular Stent Research Institute, Chonnam National University, Gwangju, Korea
| | - Myung Ho Jeong
- The Korea Cardiovascular Stent Research Institute, Chonnam National University, Gwangju, Korea.
- The Cardiovascular Convergence Research Center of Chonnam National University Hospital Designated by Korea Ministry of Health and Welfare, Gwangju, Korea.
- Department of Cardiovascular Medicine, Chonnam National University Hospital, Gwangju, Korea.
- Department of Cardiovascular Medicine, Chonnam National University Medical School, Gwangju, Korea.
- Department of Cardiovascular Center, Gwangju Veterans Hospital, Gwangju, Korea.
| | - Doo Sun Sim
- The Korea Cardiovascular Stent Research Institute, Chonnam National University, Gwangju, Korea.
- The Cardiovascular Convergence Research Center of Chonnam National University Hospital Designated by Korea Ministry of Health and Welfare, Gwangju, Korea.
- Department of Cardiovascular Medicine, Chonnam National University Hospital, Gwangju, Korea.
- Department of Cardiovascular Medicine, Chonnam National University Medical School, Gwangju, Korea.
| | - Yu Jeong Jin
- The Korea Cardiovascular Stent Research Institute, Chonnam National University, Gwangju, Korea
| | - Hae Jin Kee
- The Cardiovascular Convergence Research Center of Chonnam National University Hospital Designated by Korea Ministry of Health and Welfare, Gwangju, Korea
| | - Mun Ki Kim
- The Korea Cardiovascular Stent Research Institute, Chonnam National University, Gwangju, Korea
- The Cardiovascular Convergence Research Center of Chonnam National University Hospital Designated by Korea Ministry of Health and Welfare, Gwangju, Korea
| | - Jeong Ha Kim
- The Korea Cardiovascular Stent Research Institute, Chonnam National University, Gwangju, Korea
- The Cardiovascular Convergence Research Center of Chonnam National University Hospital Designated by Korea Ministry of Health and Welfare, Gwangju, Korea
| | - Young Joon Hong
- The Korea Cardiovascular Stent Research Institute, Chonnam National University, Gwangju, Korea
- The Cardiovascular Convergence Research Center of Chonnam National University Hospital Designated by Korea Ministry of Health and Welfare, Gwangju, Korea
- Department of Cardiovascular Medicine, Chonnam National University Hospital, Gwangju, Korea
- Department of Cardiovascular Medicine, Chonnam National University Medical School, Gwangju, Korea
| | - Kyung Hoon Cho
- The Korea Cardiovascular Stent Research Institute, Chonnam National University, Gwangju, Korea
- The Cardiovascular Convergence Research Center of Chonnam National University Hospital Designated by Korea Ministry of Health and Welfare, Gwangju, Korea
- Department of Cardiovascular Medicine, Chonnam National University Hospital, Gwangju, Korea
- Department of Cardiovascular Medicine, Chonnam National University Medical School, Gwangju, Korea
| | - Dae Young Hyun
- The Korea Cardiovascular Stent Research Institute, Chonnam National University, Gwangju, Korea
- The Cardiovascular Convergence Research Center of Chonnam National University Hospital Designated by Korea Ministry of Health and Welfare, Gwangju, Korea
- Department of Cardiovascular Medicine, Chonnam National University Hospital, Gwangju, Korea
| | - Seok Oh
- The Korea Cardiovascular Stent Research Institute, Chonnam National University, Gwangju, Korea
- The Cardiovascular Convergence Research Center of Chonnam National University Hospital Designated by Korea Ministry of Health and Welfare, Gwangju, Korea
- Department of Cardiovascular Medicine, Chonnam National University Hospital, Gwangju, Korea
| | - Kyung Seob Lim
- Futuristic Animal Resource & Research Center, Korea Research Institute of Bioscience and Biotechnology, Ochang, Korea
| | | | - Jeong Hun Kim
- Department of Cardiovascular Medicine, Chonnam National University Hospital, Gwangju, Korea
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Hassan M, Yasir M, Shahzadi S, Chun W, Kloczkowski A. Molecular Role of Protein Phosphatases in Alzheimer's and Other Neurodegenerative Diseases. Biomedicines 2024; 12:1097. [PMID: 38791058 PMCID: PMC11117500 DOI: 10.3390/biomedicines12051097] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2024] [Revised: 05/02/2024] [Accepted: 05/14/2024] [Indexed: 05/26/2024] Open
Abstract
Alzheimer's disease (AD) is distinguished by the gradual loss of cognitive function, which is associated with neuronal loss and death. Accumulating evidence supports that protein phosphatases (PPs; PP1, PP2A, PP2B, PP4, PP5, PP6, and PP7) are directly linked with amyloid beta (Aβ) as well as the formation of the neurofibrillary tangles (NFTs) causing AD. Published data reported lower PP1 and PP2A activity in both gray and white matters in AD brains than in the controls, which clearly shows that dysfunctional phosphatases play a significant role in AD. Moreover, PP2A is also a major causing factor of AD through the deregulation of the tau protein. Here, we review recent advances on the role of protein phosphatases in the pathology of AD and other neurodegenerative diseases. A better understanding of this problem may lead to the development of phosphatase-targeted therapies for neurodegenerative disorders in the near future.
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Affiliation(s)
- Mubashir Hassan
- The Steve and Cindy Rasmussen Institute for Genomic Medicine, Nationwide Children’s Hospital, Columbus, OH 43205, USA;
| | - Muhammad Yasir
- Department of Pharmacology, Kangwon National University School of Medicine, Chuncheon 24341, Republic of Korea; (M.Y.); (W.C.)
| | - Saba Shahzadi
- The Steve and Cindy Rasmussen Institute for Genomic Medicine, Nationwide Children’s Hospital, Columbus, OH 43205, USA;
| | - Wanjoo Chun
- Department of Pharmacology, Kangwon National University School of Medicine, Chuncheon 24341, Republic of Korea; (M.Y.); (W.C.)
| | - Andrzej Kloczkowski
- The Steve and Cindy Rasmussen Institute for Genomic Medicine, Nationwide Children’s Hospital, Columbus, OH 43205, USA;
- Department of Pediatrics, The Ohio State University, Columbus, OH 43205, USA
- Department of Biomedical Informatics, The Ohio State University, Columbus, OH 43210, USA
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Lui WY, Ong CP, Cheung PHH, Ye ZW, Chan CP, To KKW, Yuen KS, Jin DY. Nsp1 facilitates SARS-CoV-2 replication through calcineurin-NFAT signaling. mBio 2024; 15:e0039224. [PMID: 38411085 PMCID: PMC11005343 DOI: 10.1128/mbio.00392-24] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2024] [Accepted: 02/08/2024] [Indexed: 02/28/2024] Open
Abstract
SARS-CoV-2, the causative agent of COVID-19, has been intensely studied in search of effective antiviral treatments. The immunosuppressant cyclosporine A (CsA) has been suggested to be a pan-coronavirus inhibitor, yet its underlying mechanism remained largely unknown. Here, we found that non-structural protein 1 (Nsp1) of SARS-CoV-2 usurped CsA-suppressed nuclear factor of activated T cells (NFAT) signaling to drive the expression of cellular DEAD-box helicase 5 (DDX5), which facilitates viral replication. Nsp1 interacted with calcineurin A (CnA) to displace the regulatory protein regulator of calcineurin 3 (RCAN3) of CnA for NFAT activation. The influence of NFAT activation on SARS-CoV-2 replication was also validated by using the Nsp1-deficient mutant virus. Calcineurin inhibitors, such as CsA and VIVIT, inhibited SARS-CoV-2 replication and exhibited synergistic antiviral effects when used in combination with nirmatrelvir. Our study delineated the molecular mechanism of CsA-mediated inhibition of SARS-CoV-2 replication and the anti-SARS-CoV-2 action of calcineurin inhibitors. IMPORTANCE Cyclosporine A (CsA), commonly used to inhibit immune responses, is also known to have anti-SARS-CoV-2 activity, but its mode of action remains elusive. Here, we provide a model to explain how CsA antagonizes SARS-CoV-2 through three critical proteins: DDX5, NFAT1, and Nsp1. DDX5 is a cellular facilitator of SARS-CoV-2 replication, and NFAT1 controls the production of DDX5. Nsp1 is a viral protein absent from the mature viral particle and capable of activating the function of NFAT1 and DDX5. CsA and similar agents suppress Nsp1, NFAT1, and DDX5 to exert their anti-SARS-CoV-2 activity either alone or in combination with Paxlovid.
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Affiliation(s)
- Wai-Yin Lui
- School of Biomedical Sciences, The University of Hong Kong, Pokfulam, Hong Kong
| | - Chon Phin Ong
- School of Biomedical Sciences, The University of Hong Kong, Pokfulam, Hong Kong
| | | | - Zi-Wei Ye
- School of Biomedical Sciences, The University of Hong Kong, Pokfulam, Hong Kong
| | - Chi-Ping Chan
- School of Biomedical Sciences, The University of Hong Kong, Pokfulam, Hong Kong
| | - Kelvin Kai-Wang To
- Department of Microbiology, The University of Hong Kong, Pokfulam, Hong Kong
| | - Kit-San Yuen
- School of Biomedical Sciences, The University of Hong Kong, Pokfulam, Hong Kong
- School of Nursing, Tung Wah College, Kowloon, Hong Kong
| | - Dong-Yan Jin
- School of Biomedical Sciences, The University of Hong Kong, Pokfulam, Hong Kong
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Hasani S, Fathabadi F, Saeidi S, Mohajernoei P, Hesari Z. The role of NFATc1 in the progression and metastasis of prostate cancer: A review on the molecular mechanisms and signaling pathways. Cell Biol Int 2023; 47:1895-1904. [PMID: 37814550 DOI: 10.1002/cbin.12094] [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: 04/17/2023] [Revised: 08/27/2023] [Accepted: 09/26/2023] [Indexed: 10/11/2023]
Abstract
A common type of cancer among men is the prostate cancer that kills many people every year. The multistage of this disease and the involvement of the vital organs of the body have reduced the life span and quality of life of the people involved and turned the treatment process into a complex one. NFATc1 biomarker contributes significantly in the diagnosis and treatment of this disease by increasing its expression in prostate cancer and helping the proliferation, differentiation, and invasion of cancer cells through different signaling pathways. NFATc1 is also able to target the metabolism of cancer cells by inserting specific oncogene molecules such as c-myc that it causes cell growth and proliferation. Bone is a common tissue where prostate cancer cells metastasize. In this regard, the activity of NFATc1, through the regulation of different signaling cascades, including the RANKL/RANK signaling pathway, in turn, increases the activity of osteoclasts, and as a result, bone tissue is gradually ruined. Using Silibinin as a medicinal plant extract can inhibit the activity of osteoclasts related to prostate cancer by targeting NFATc. Undoubtedly, NFATc1 is one of the effective oncogenes related to prostate cancer, which has the potential to put this cancer on the path of progression and metastasis. In this review, we will highlight the role of NFATc1 in the progression and metastasis of prostate cancer. Furthermore, we will summarize signaling pathways and molecular mechanism, through which NFATc1 regulates the process of prostate cancer.
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Affiliation(s)
- Samaneh Hasani
- Department of Nursing, Faculty of Medical Sciences, Khalkhal University of Medical Sciences, Khalkhal, Iran
| | - Farshid Fathabadi
- Laboratory Sciences Research Center, Golestan University of Medical Sciences, Department of Laboratory Sciences, Faculty of Paramedicine, Golestan University of Medical Sciences, Gorgan, Iran
| | - Saman Saeidi
- Laboratory Sciences Research Center, Golestan University of Medical Sciences, Department of Laboratory Sciences, Faculty of Paramedicine, Golestan University of Medical Sciences, Gorgan, Iran
| | - Pouya Mohajernoei
- Department of Medicine and Surgery, Università degli Studi di Padova, Padua, Italy
| | - Zahra Hesari
- Laboratory Sciences Research Center, Golestan University of Medical Sciences, Department of Laboratory Sciences, Faculty of Paramedicine, Golestan University of Medical Sciences, Gorgan, Iran
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Ume AC, Wenegieme TY, Shelby JN, Paul-Onyia CDB, Waite AMJ, Kamau JK, Adams DN, Susuki K, Bennett ES, Ren H, Williams CR. Tacrolimus induces fibroblast-to-myofibroblast transition via a TGF-β-dependent mechanism to contribute to renal fibrosis. Am J Physiol Renal Physiol 2023; 324:F433-F445. [PMID: 36927118 PMCID: PMC10085566 DOI: 10.1152/ajprenal.00226.2022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2022] [Revised: 02/07/2023] [Accepted: 03/09/2023] [Indexed: 03/18/2023] Open
Abstract
Use of immunosuppressant calcineurin inhibitors (CNIs) is limited by irreversible kidney damage, hallmarked by renal fibrosis. CNIs directly damage many renal cell types. Given the diverse renal cell populations, additional targeted cell types and signaling mechanisms warrant further investigation. We hypothesized that fibroblasts contribute to CNI-induced renal fibrosis and propagate profibrotic effects via the transforming growth factor-β (TGF-β)/Smad signaling axis. To test this, kidney damage-resistant mice (C57BL/6) received tacrolimus (10 mg/kg) or vehicle for 21 days. Renal damage markers and signaling mediators were assessed. To investigate their role in renal damage, mouse renal fibroblasts were exposed to tacrolimus (1 nM) or vehicle for 24 h. Morphological and functional changes in addition to downstream signaling events were assessed. Tacrolimus-treated kidneys displayed evidence of renal fibrosis. Moreover, α-smooth muscle actin expression was significantly increased, suggesting the presence of fibroblast activation. TGF-β receptor activation and downstream Smad2/3 signaling were also upregulated. Consistent with in vivo findings, tacrolimus-treated renal fibroblasts displayed a phenotypic switch known as fibroblast-to-myofibroblast transition (FMT), as α-smooth muscle actin, actin stress fibers, cell motility, and collagen type IV expression were significantly increased. These findings were accompanied by concomitant induction of TGF-β signaling. Pharmacological inhibition of the downstream TGF-β effector Smad3 attenuated tacrolimus-induced phenotypic changes. Collectively, these findings suggest that 1) tacrolimus inhibits the calcineurin/nuclear factor of activated T cells axis while inducing TGF-β1 ligand secretion and receptor activation in renal fibroblasts; 2) aberrant TGF-β receptor activation stimulates Smad-mediated production of myofibroblast markers, notable features of FMT; and 3) FMT contributes to extracellular matrix expansion in tacrolimus-induced renal fibrosis. These results incorporate renal fibroblasts into the growing list of CNI-targeted cell types and identify renal FMT as a process mediated via a TGF-β-dependent mechanism.NEW & NOTEWORTHY Renal fibrosis, a detrimental feature of irreversible kidney damage, remains a sinister consequence of long-term calcineurin inhibitor (CNI) immunosuppressive therapy. Our study not only incorporates renal fibroblasts into the growing list of cell types negatively impacted by CNIs but also identifies renal fibroblast-to-myofibroblast transition as a process mediated via a TGF-β-dependent mechanism. This insight will direct future studies investigating the feasibility of inhibiting TGF-β signaling to maintain CNI-mediated immunosuppression while ultimately preserving kidney health.
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Affiliation(s)
- Adaku C Ume
- Department of Neuroscience, Cell Biology, and Physiology, Boonshoft School of Medicine and College of Science and Mathematics, Wright State University, Dayton, Ohio, United States
| | - Tara Y Wenegieme
- Department of Neuroscience, Cell Biology, and Physiology, Boonshoft School of Medicine and College of Science and Mathematics, Wright State University, Dayton, Ohio, United States
| | - Jennae N Shelby
- Department of Neuroscience, Cell Biology, and Physiology, Boonshoft School of Medicine and College of Science and Mathematics, Wright State University, Dayton, Ohio, United States
| | - Chiagozie D B Paul-Onyia
- Department of Neuroscience, Cell Biology, and Physiology, Boonshoft School of Medicine and College of Science and Mathematics, Wright State University, Dayton, Ohio, United States
| | - Aston M J Waite
- Department of Neuroscience, Cell Biology, and Physiology, Boonshoft School of Medicine and College of Science and Mathematics, Wright State University, Dayton, Ohio, United States
| | - John K Kamau
- Department of Biochemistry and Molecular Biology, Boonshoft School of Medicine and College of Science and Mathematics, Wright State University, Dayton, Ohio, United States
| | - Danielle N Adams
- Department of Neuroscience, Cell Biology, and Physiology, Boonshoft School of Medicine and College of Science and Mathematics, Wright State University, Dayton, Ohio, United States
| | - Keiichiro Susuki
- Department of Neuroscience, Cell Biology, and Physiology, Boonshoft School of Medicine and College of Science and Mathematics, Wright State University, Dayton, Ohio, United States
| | - Eric S Bennett
- Department of Neuroscience, Cell Biology, and Physiology, Boonshoft School of Medicine and College of Science and Mathematics, Wright State University, Dayton, Ohio, United States
- Department of Biochemistry and Molecular Biology, Boonshoft School of Medicine and College of Science and Mathematics, Wright State University, Dayton, Ohio, United States
| | - Hongmei Ren
- Department of Biochemistry and Molecular Biology, Boonshoft School of Medicine and College of Science and Mathematics, Wright State University, Dayton, Ohio, United States
| | - Clintoria R Williams
- Department of Neuroscience, Cell Biology, and Physiology, Boonshoft School of Medicine and College of Science and Mathematics, Wright State University, Dayton, Ohio, United States
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Funneling modulatory peptide design with generative models: Discovery and characterization of disruptors of calcineurin protein-protein interactions. PLoS Comput Biol 2023; 19:e1010874. [PMID: 36730443 PMCID: PMC9928118 DOI: 10.1371/journal.pcbi.1010874] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2022] [Revised: 02/14/2023] [Accepted: 01/16/2023] [Indexed: 02/04/2023] Open
Abstract
Design of peptide binders is an attractive strategy for targeting "undruggable" protein-protein interfaces. Current design protocols rely on the extraction of an initial sequence from one known protein interactor of the target protein, followed by in-silico or in-vitro mutagenesis-based optimization of its binding affinity. Wet lab protocols can explore only a minor portion of the vast sequence space and cannot efficiently screen for other desirable properties such as high specificity and low toxicity, while in-silico design requires intensive computational resources and often relies on simplified binding models. Yet, for a multivalent protein target, dozens to hundreds of natural protein partners already exist in the cellular environment. Here, we describe a peptide design protocol that harnesses this diversity via a machine learning generative model. After identifying putative natural binding fragments by literature and homology search, a compositional Restricted Boltzmann Machine is trained and sampled to yield hundreds of diverse candidate peptides. The latter are further filtered via flexible molecular docking and an in-vitro microchip-based binding assay. We validate and test our protocol on calcineurin, a calcium-dependent protein phosphatase involved in various cellular pathways in health and disease. In a single screening round, we identified multiple 16-length peptides with up to six mutations from their closest natural sequence that successfully interfere with the binding of calcineurin to its substrates. In summary, integrating protein interaction and sequence databases, generative modeling, molecular docking and interaction assays enables the discovery of novel protein-protein interaction modulators.
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Fungal calcineurin complex as an antifungal target: From past to present to future. FUNGAL BIOL REV 2022. [DOI: 10.1016/j.fbr.2022.10.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Ritchie JA, Ng JQ, Kemi OJ. When one says yes and the other says no; does calcineurin participate in physiologic cardiac hypertrophy? ADVANCES IN PHYSIOLOGY EDUCATION 2022; 46:84-95. [PMID: 34762541 DOI: 10.1152/advan.00104.2021] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/12/2021] [Accepted: 11/08/2021] [Indexed: 06/13/2023]
Abstract
Developing engaging activities that build skills for understanding and appreciating research is important for undergraduate and postgraduate science students. Comparing and contrasting opposing research studies does this, and more: it also appropriately for these cohorts challenges higher level cognitive processing. Here, we present and discuss one such scenario, that of calcineurin in the heart and its response to exercise training. This scenario is further accentuated by the existence of only two studies. The background is that regular aerobic endurance exercise training stimulates the heart to physiologically adapt to chronically increase its ability to produce a greater cardiac output to meet the increased demand for oxygenated blood in working muscles, and this happens by two main mechanisms: 1) increased cardiac contractile function and 2) physiologic hypertrophy. The major underlying mechanisms have been delineated over the last decades, but one aspect has not been resolved: the potential role of calcineurin in modulating physiologic hypertrophy. This is partly because the existing research has provided opposing and contrasting findings, one line showing that exercise training does activate cardiac calcineurin in conjunction with myocardial hypertrophy, but another line showing that exercise training does not activate cardiac calcineurin even if myocardial hypertrophy is blatantly occurring. Here, we review and present the current evidence in the field and discuss reasons for this controversy. We present real-life examples from physiology research and discuss how this may enhance student engagement and participation, widen the scope of learning, and thereby also further facilitate higher level cognitive processing.
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Affiliation(s)
- Jonathan A Ritchie
- School of Medicine, Dentistry and Nursing, College of Medical, Veterinary, and Life Sciences, University of Glasgow, Glasgow, United Kingdom
| | - Jun Q Ng
- School of Life Sciences, College of Medical, Veterinary, and Life Sciences, University of Glasgow, Glasgow, United Kingdom
| | - Ole J Kemi
- School of Life Sciences, College of Medical, Veterinary, and Life Sciences, University of Glasgow, Glasgow, United Kingdom
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Antibacterial Effect of a Short Peptide, VV18, from Calcineurin-A of Macrobrachium rosenbergii: Antibiofilm Agent Against Escherichia coli and a Bacterial Membrane Disruptor in Pseudomonas aeruginosa. Int J Pept Res Ther 2021. [DOI: 10.1007/s10989-021-10332-7] [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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10
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Chaklader M, Rothermel BA. Calcineurin in the heart: New horizons for an old friend. Cell Signal 2021; 87:110134. [PMID: 34454008 PMCID: PMC8908812 DOI: 10.1016/j.cellsig.2021.110134] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2021] [Revised: 08/10/2021] [Accepted: 08/23/2021] [Indexed: 01/20/2023]
Abstract
Calcineurin, also known as PP2B or PPP3, is a member of the PPP family of protein phosphatases that also includes PP1 and PP2A. Together these three phosphatases carryout the majority of dephosphorylation events in the heart. Calcineurin is distinct in that it is activated by the binding of calcium/calmodulin (Ca2+/CaM) and therefore acts as a node for integrating Ca2+ signals with changes in phosphorylation, two fundamental intracellular signaling cascades. In the heart, calcineurin is primarily thought of in the context of pathological cardiac remodeling, acting through the Nuclear Factor of Activated T-cell (NFAT) family of transcription factors. However, calcineurin activity is also essential for normal heart development and homeostasis in the adult heart. Furthermore, it is clear that NFAT-driven changes in transcription are not the only relevant processes initiated by calcineurin in the setting of pathological remodeling. There is a growing appreciation for the diversity of calcineurin substrates that can impact cardiac function as well as the diversity of mechanisms for targeting calcineurin to specific sub-cellular domains in cardiomyocytes and other cardiac cell types. Here, we will review the basics of calcineurin structure, regulation, and function in the context of cardiac biology. Particular attention will be given to: the development of improved tools to identify and validate new calcineurin substrates; recent studies identifying new calcineurin isoforms with unique properties and targeting mechanisms; and the role of calcineurin in cardiac development and regeneration.
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Affiliation(s)
- Malay Chaklader
- Departments of Internal Medicine (Division of Cardiology) and Molecular Biology, University of Texas Southwestern Medical Centre, Dallas, TX, USA
| | - Beverly A Rothermel
- Departments of Internal Medicine (Division of Cardiology) and Molecular Biology, University of Texas Southwestern Medical Centre, Dallas, TX, USA.
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van der Merwe M, van Niekerk G, Fourie C, du Plessis M, Engelbrecht AM. The impact of mitochondria on cancer treatment resistance. Cell Oncol (Dordr) 2021; 44:983-995. [PMID: 34244972 DOI: 10.1007/s13402-021-00623-y] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2021] [Accepted: 06/24/2021] [Indexed: 12/20/2022] Open
Abstract
BACKGROUND The ability of cancer cells to develop treatment resistance is one of the primary factors that prevent successful treatment. Although initially thought to be dysfunctional in cancer, mitochondria are significant players that mediate treatment resistance. Literature indicates that cancer cells reutilize their mitochondria to facilitate cancer progression and treatment resistance. However, the mechanisms by which the mitochondria promote treatment resistance have not yet been fully elucidated. CONCLUSIONS AND PERSPECTIVES Here, we describe various means by which mitochondria can promote treatment resistance. For example, mutations in tricarboxylic acid (TCA) cycle enzymes, i.e., fumarate hydratase and isocitrate dehydrogenase, result in the accumulation of the oncometabolites fumarate and 2-hydroxyglutarate, respectively. These oncometabolites may promote treatment resistance by upregulating the nuclear factor erythroid 2-related factor 2 (Nrf2) pathway, inhibiting the anti-tumor immune response, or promoting angiogenesis. Furthermore, stromal cells can donate intact mitochondria to cancer cells after therapy to restore mitochondrial functionality and facilitate treatment resistance. Targeting mitochondria is, therefore, a feasible strategy that may dampen treatment resistance. Analysis of tumoral DNA may also be used to guide treatment choices. It will indicate whether enzymatic mutations are present in the TCA cycle and, if so, whether the mutations or their downstream signaling pathways can be targeted. This may improve treatment outcomes by inhibiting treatment resistance or promoting the effectiveness of anti-angiogenic agents or immunotherapy.
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Affiliation(s)
- Michelle van der Merwe
- Department of Physiological Sciences, Stellenbosch University, Stellenbosch, South Africa.
| | - Gustav van Niekerk
- Department of Physiological Sciences, Stellenbosch University, Stellenbosch, South Africa
| | - Carla Fourie
- Department of Physiological Sciences, Stellenbosch University, Stellenbosch, South Africa
| | - Manisha du Plessis
- Department of Physiological Sciences, Stellenbosch University, Stellenbosch, South Africa
| | - Anna-Mart Engelbrecht
- Department of Physiological Sciences, Stellenbosch University, Stellenbosch, South Africa
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Kim HJ, Kim H, Choi Y, Lee JH, Kim D, Lee SK, Park KS. Cinnamomum verum-derived O-methoxycinnamaldehyde prevents lipopolysaccharide-induced depressive-like behavior in mice via NFAT mRNA stability in T lymphocytes. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2021; 91:153703. [PMID: 34425473 DOI: 10.1016/j.phymed.2021.153703] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/30/2021] [Revised: 07/30/2021] [Accepted: 08/06/2021] [Indexed: 06/13/2023]
Abstract
BACKGROUND Depressive-like behaviors are related to inflammatory immune activation. Cinnamomum verum (CV) has anti-inflammatory effects, but the molecular mechanisms underlying the antidepressant effects after immunological activation still remain elusive. PURPOSE The aim of the present study was to investigate the effect of CV in improving depressive-like behavior and explore its underlying mechanism in T lymphocytes. METHODS Mice were randomly divided into Control, LPS, LPS plus fluoxetine, LPS plus CV, and LPS plus MCA groups. Behavior was evaluated using forced swimming test (FST) and tail suspension test (TST). The experimental group mice were exposed to LPS to induce depressive-like behavior. Cell viability was measured upon treating splenic T lymphocytes and Jurkat T cells with CV. Cytokine activity was measured using ELISA and RT-qPCR. The components of CV were analyzed by HPLC. NFAT expression was evaluated by western blotting, immunofluorescence, and luciferase assay. To verify the half-life of NFAT mRNA, Jurkat cells were treated with actinomycin D for 1.5, 3, and 4.5 h. RESULTS CV effectively prevents inflammation-induced depressive-like behaviors. CV dose-dependently decreased protein and mRNA levels of TNFα and IL-2. Inhibition of TNFα and IL-2 production involves an MCA-mediated decrease in NFAT mRNA level, rather than inhibition of nuclear translocation. This mechanism was independent of NFAT transcription inducer p38 MAPK; it can be attributed to the promotion of NFAT mRNA decay. CONCLUSION Overall, MCA might be an alternative or adjuvant to existing NFAT-targeting immunosuppressants for clinical prophylaxis or therapy in the context of inflammation-induced depressive disorder or other T-cell-associated inflammatory disorders.
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Affiliation(s)
- Hye Jin Kim
- KM Convergence Research Division, Korea Institute of Oriental Medicine, Daejeon 34054, Republic of Korea; College of Pharmacy, Natural Products Research Institute, Seoul National University, Seoul 08826, Republic of Korea
| | - Hyungjun Kim
- KM Science Research Division, Korea Institute of Oriental Medicine, Daejeon 34054, Republic of Korea
| | - Yujin Choi
- KM Science Research Division, Korea Institute of Oriental Medicine, Daejeon 34054, Republic of Korea
| | - Jun-Hwan Lee
- KM Science Research Division, Korea Institute of Oriental Medicine, Daejeon 34054, Republic of Korea; Korean Medicine Life Science, University of Science & Technology (UST), Campus of Korea Institute of Oriental Medicine, Daejeon 34054, Republic of Korea
| | - Donghwan Kim
- Laboratory of Metabolism, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, Maryland
| | - Sang Kook Lee
- College of Pharmacy, Natural Products Research Institute, Seoul National University, Seoul 08826, Republic of Korea.
| | - Ki-Sun Park
- KM Science Research Division, Korea Institute of Oriental Medicine, Daejeon 34054, Republic of Korea.
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13
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Sompol P, Gollihue JL, Kraner SD, Artiushin IA, Cloyd RA, Chishti EA, Koren SA, Nation GK, Abisambra JF, Huzian O, Nagy LI, Santha M, Hackler L, Puskas LG, Norris CM. Q134R: Small chemical compound with NFAT inhibitory properties improves behavioral performance and synapse function in mouse models of amyloid pathology. Aging Cell 2021; 20:e13416. [PMID: 34117818 PMCID: PMC8282246 DOI: 10.1111/acel.13416] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2020] [Revised: 03/30/2021] [Accepted: 05/19/2021] [Indexed: 12/27/2022] Open
Abstract
Inhibition of the protein phosphatase calcineurin (CN) ameliorates pathophysiologic and cognitive changes in aging rodents and mice with aging-related Alzheimer's disease (AD)-like pathology. However, concerns over adverse effects have slowed the transition of common CN-inhibiting drugs to the clinic for the treatment of AD and AD-related disorders. Targeting substrates of CN, like the nuclear factor of activated T cells (NFATs), has been suggested as an alternative, safer approach to CN inhibitors. However, small chemical inhibitors of NFATs have only rarely been described. Here, we investigate a newly developed neuroprotective hydroxyquinoline derivative (Q134R) that suppresses NFAT signaling, without inhibiting CN activity. Q134R partially inhibited NFAT activity in primary rat astrocytes, but did not prevent CN-mediated dephosphorylation of a non-NFAT target, either in vivo, or in vitro. Acute (≤1 week) oral delivery of Q134R to APP/PS1 (12 months old) or wild-type mice (3-4 months old) infused with oligomeric Aβ peptides led to improved Y maze performance. Chronic (≥3 months) oral delivery of Q134R appeared to be safe, and, in fact, promoted survival in wild-type (WT) mice when given for many months beyond middle age. Finally, chronic delivery of Q134R to APP/PS1 mice during the early stages of amyloid pathology (i.e., between 6 and 9 months) tended to reduce signs of glial reactivity, prevented the upregulation of astrocytic NFAT4, and ameliorated deficits in synaptic strength and plasticity, without noticeably altering parenchymal Aβ plaque pathology. The results suggest that Q134R is a promising drug for treating AD and aging-related disorders.
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Affiliation(s)
- Pradoldej Sompol
- Sanders‐Brown Center on Aging University of Kentucky College of Medicine Lexington KY USA
| | - Jenna L. Gollihue
- Sanders‐Brown Center on Aging University of Kentucky College of Medicine Lexington KY USA
| | - Susan D. Kraner
- Sanders‐Brown Center on Aging University of Kentucky College of Medicine Lexington KY USA
| | - Irina A. Artiushin
- Sanders‐Brown Center on Aging University of Kentucky College of Medicine Lexington KY USA
| | - Ryan A. Cloyd
- Sanders‐Brown Center on Aging University of Kentucky College of Medicine Lexington KY USA
| | - Emad A. Chishti
- Sanders‐Brown Center on Aging University of Kentucky College of Medicine Lexington KY USA
| | - Shon A. Koren
- Sanders‐Brown Center on Aging University of Kentucky College of Medicine Lexington KY USA
| | - Grant K. Nation
- Sanders‐Brown Center on Aging University of Kentucky College of Medicine Lexington KY USA
| | - Jose F. Abisambra
- Center for Translational Research in Neurodegenerative Disease University of Florida Gainesville FL USA
| | | | | | | | | | | | - Christopher M. Norris
- Sanders‐Brown Center on Aging University of Kentucky College of Medicine Lexington KY USA
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14
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Shahid S, Prockop SE. Epstein-Barr virus-associated post-transplant lymphoproliferative disorders: beyond chemotherapy treatment. CANCER DRUG RESISTANCE (ALHAMBRA, CALIF.) 2021; 4:646-664. [PMID: 34485854 PMCID: PMC8415721 DOI: 10.20517/cdr.2021.34] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/14/2021] [Revised: 05/10/2021] [Accepted: 05/19/2021] [Indexed: 12/30/2022]
Abstract
Post-transplant lymphoproliferative disorder (PTLD) is a rare but life-threatening complication of both allogeneic solid organ (SOT) and hematopoietic cell transplantation (HCT). The histology of PTLD ranges from benign polyclonal lymphoproliferation to a lesion indistinguishable from classic monoclonal lymphoma. Most commonly, PTLDs are Epstein-Barr virus (EBV) positive and result from loss of immune surveillance over EBV. Treatment for PTLD differs from the treatment for typical non-Hodgkin lymphoma because prognostic factors are different, resistance to treatment is unique, and there are specific concerns for organ toxicity. While recipients of HCT have a limited time during which they are at risk for this complication, recipients of SOT have a lifelong requirement for immunosuppression, so approaches that limit compromising or help restore immune surveillance are of high interest. Furthermore, while EBV-positive and EBV-negative PTLDs are not intrinsically resistant to chemotherapy, the poor tolerance of chemotherapy in the post-transplant setting makes it essential to minimize potential treatment-related toxicities and explore alternative treatment algorithms. Therefore, reduced-toxicity approaches such as single-agent CD20 monoclonal antibodies or bortezomib, reduced dosing of standard chemotherapeutic agents, and non-chemotherapy-based approaches such as cytotoxic T cells have all been explored. Here, we review the chemotherapy and non-chemotherapy treatment landscape for PTLD.
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Affiliation(s)
| | - Susan E. Prockop
- Department of Pediatrics, Memorial Sloan Kettering Cancer Center, New York, NY 10065, USA
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15
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Calcineurin controls proximodistal blastema polarity in zebrafish fin regeneration. Proc Natl Acad Sci U S A 2021; 118:2009539118. [PMID: 33376206 DOI: 10.1073/pnas.2009539118] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
Planarian flatworms regenerate their heads and tails from anterior or posterior wounds and this regenerative blastema polarity is controlled by Wnt/β-catenin signaling. It is well known that a regeneration blastema of appendages of vertebrates such as fish and amphibians grows distally. However, it remains unclear whether a regeneration blastema in vertebrate appendages can grow proximally. Here, we show that a regeneration blastema in zebrafish fins can grow proximally along the proximodistal axis by calcineurin inhibition. We used fin excavation in adult zebrafish to observe unidirectional regeneration from the anterior cut edge (ACE) to the posterior cut edge (PCE) of the cavity and this unidirectional regeneration polarity occurs as the PCE fails to build blastemas. Furthermore, we found that calcineurin activities in the ACE were greater than in the PCE. Calcineurin inhibition induced PCE blastemas, and calcineurin hyperactivation suppressed fin regeneration. Collectively, these findings identify calcineurin as a molecular switch to specify the PCE blastema of the proximodistal axis and regeneration polarity in zebrafish fin.
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16
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Albaghdadi AJH, Kan FWK. Therapeutic Potentials of Low-Dose Tacrolimus for Aberrant Endometrial Features in Polycystic Ovary Syndrome. Int J Mol Sci 2021; 22:2872. [PMID: 33808965 PMCID: PMC7998611 DOI: 10.3390/ijms22062872] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2021] [Revised: 02/24/2021] [Accepted: 03/09/2021] [Indexed: 02/07/2023] Open
Abstract
Polycystic ovary syndrome (PCOS) is a major anovulatory infertility affecting a great proportion of women of childbearing age and is associated with obesity, insulin resistance and chronic inflammation. Poor endometrial receptivity and recurrent implantation failure are major hurdles to the establishment of pregnancy in women with PCOS. The accumulating body of evidence obtained from experimental and clinical studies suggests a link between inherent adaptive and innate immune irregularities and aberrant endometrial features in PCOS. The use of conventional therapeutic interventions such as lifestyle modification, metformin and ovarian stimulation has achieved limited clinical success in restoring ovulation and endometrial receptivity in women with PCOS. Unlike other immunosuppressive drugs prescribed in the clinical management of autoimmune and inflammatory disorders that may have deleterious effects on fertility and fetal development, preclinical studies in mice and in women without PCOS but with repeated implantation failure revealed potential therapeutic benefits for the use of low-dose tacrolimus in treating female infertility. Improved systemic and ovarian immune functions, endometrial progesterone receptor and coreceptor expressions and uterine vascular adaptation to pregnancy were among features of enhanced progesterone-receptor sensitivity in the low-dose tacrolimus-treated mouse model of the disease. In this review, we have compiled available experimental and clinical data in literature on endometrial progesterone resistance and current therapeutic options, as well as mechanisms of actions and reported outcomes relevant to the potential therapeutic benefits for the use of low-dose tacrolimus in treating PCOS-associated female infertility.
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Affiliation(s)
| | - Frederick W. K. Kan
- Department of Biomedical and Molecular Sciences, Faculty of Health Sciences, Queen’s University, Kingston, ON K7L 3N6, Canada;
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17
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Dimethyl fumarate exerts neuroprotection by modulating calcineurin/NFAT1 and NFκB dependent BACE1 activity in Aβ1-42 treated neuroblastoma SH-SY5Y cells. Brain Res Bull 2020; 165:97-107. [DOI: 10.1016/j.brainresbull.2020.08.024] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2020] [Revised: 08/04/2020] [Accepted: 08/22/2020] [Indexed: 12/31/2022]
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18
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Dougherty PG, Karpurapu M, Koley A, Lukowski JK, Qian Z, Nirujogi TS, Rusu L, Chung S, Hummon AB, Li HW, Christman JW, Pei D. A Peptidyl Inhibitor that Blocks Calcineurin-NFAT Interaction and Prevents Acute Lung Injury. J Med Chem 2020; 63:12853-12872. [PMID: 33073986 PMCID: PMC8011862 DOI: 10.1021/acs.jmedchem.0c01236] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Acute respiratory distress syndrome (ARDS) is an inflammatory lung disease with a high morbidity and mortality rate, for which no pharmacologic treatment is currently available. Our previous studies discovered that a pivotal step in the disease process is the activation of the nuclear factor of activated T cells (NFAT) c3 in lung macrophages, suggesting that inhibitors against the upstream protein phosphatase calcineurin should be effective for prevention/treatment of ARDS. Herein, we report the development of a highly potent, cell-permeable, and metabolically stable peptidyl inhibitor, CNI103, which selectively blocks the interaction between calcineurin and NFATc3, through computational and medicinal chemistry. CNI103 specifically inhibited calcineurin signaling in vitro and in vivo and exhibited a favorable pharmacokinetic profile, broad tissue distribution following different routes of administration, and minimal toxicity. Our data indicate that CNI103 is a promising novel treatment for ARDS and other inflammatory diseases.
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Affiliation(s)
- Patrick G. Dougherty
- Department of Chemistry and Biochemistry, The Ohio State University, 484 West 12 Ave., Columbus, OH 43210, United States
- Entrada Therapeutics, 50 Northern Avenue, Boston, MA 02210, United States
| | - Manjula Karpurapu
- Department of Medicine, Division of Pulmonary, Critical Care and Sleep Medicine, Ohio State University Wexner Medical Center, Davis Heart and Lung Research Institute, Columbus, Ohio 43210, United States
| | - Amritendu Koley
- Department of Chemistry and Biochemistry, The Ohio State University, 484 West 12 Ave., Columbus, OH 43210, United States
| | - Jessica K. Lukowski
- Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, IN 46556, United States
| | - Ziqing Qian
- Department of Chemistry and Biochemistry, The Ohio State University, 484 West 12 Ave., Columbus, OH 43210, United States
- Entrada Therapeutics, 50 Northern Avenue, Boston, MA 02210, United States
| | - Teja Srinivas Nirujogi
- Department of Medicine, Division of Pulmonary, Critical Care and Sleep Medicine, Ohio State University Wexner Medical Center, Davis Heart and Lung Research Institute, Columbus, Ohio 43210, United States
- East Liverpool City Hospital, 425 W 5th Street, East Liverpool, Ohio 43920, United States
| | - Luiza Rusu
- Department of Medicine, Division of Pulmonary, Critical Care and Sleep Medicine, Ohio State University Wexner Medical Center, Davis Heart and Lung Research Institute, Columbus, Ohio 43210, United States
| | - Sangwoon Chung
- Department of Medicine, Division of Pulmonary, Critical Care and Sleep Medicine, Ohio State University Wexner Medical Center, Davis Heart and Lung Research Institute, Columbus, Ohio 43210, United States
| | - Amanda B. Hummon
- Department of Chemistry and Biochemistry, The Ohio State University, 484 West 12 Ave., Columbus, OH 43210, United States
- Comprehensive Cancer Center, The Ohio State University, Columbus OH, 43210, United States
| | - Hao W. Li
- Columbia Center for Translational Immunology, Columbia University, 650 W. 168 Street, New York, New York 10032, United States
| | - John W. Christman
- Department of Medicine, Division of Pulmonary, Critical Care and Sleep Medicine, Ohio State University Wexner Medical Center, Davis Heart and Lung Research Institute, Columbus, Ohio 43210, United States
| | - Dehua Pei
- Department of Chemistry and Biochemistry, The Ohio State University, 484 West 12 Ave., Columbus, OH 43210, United States
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19
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Kolic J, Beet L, Overby P, Cen HH, Panzhinskiy E, Ure DR, Cross JL, Huizinga RB, Johnson JD. Differential Effects of Voclosporin and Tacrolimus on Insulin Secretion From Human Islets. Endocrinology 2020; 161:5902465. [PMID: 32894758 PMCID: PMC7567406 DOI: 10.1210/endocr/bqaa162] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/29/2020] [Accepted: 09/02/2020] [Indexed: 12/16/2022]
Abstract
The incidence of new onset diabetes after transplant (NODAT) has increased over the past decade, likely due to calcineurin inhibitor-based immunosuppressants, including tacrolimus (TAC) and cyclosporin. Voclosporin (VCS), a next-generation calcineurin inhibitor, is reported to cause fewer incidences of NODAT but the reason is unclear. While calcineurin signaling plays important roles in pancreatic β-cell survival, proliferation, and function, its effects on human β-cells remain understudied. In particular, we do not understand why some calcineurin inhibitors have more profound effects on the incidence of NODAT. We compared the effects of TAC and VCS on the dynamics of insulin secretory function, programmed cell death rate, and the transcriptomic profile of human islets. We studied 2 clinically relevant doses of TAC (10 ng/mL, 30 ng/mL) and VCS (20 ng/mL, 60 ng/mL), meant to approximate the clinical trough and peak concentrations. TAC, but not VCS, caused a significant impairment of 15 mM glucose-stimulated and 30 mM KCl-stimulated insulin secretion. This points to molecular defects in the distal stages of exocytosis after voltage-gated Ca2+ entry. No significant effects on islet cell survival or total insulin content were identified. RNA sequencing showed that TAC significantly decreased the expression of 17 genes, including direct and indirect regulators of exocytosis (SYT16, TBC1D30, PCK1, SMOC1, SYT5, PDK4, and CREM), whereas VCS has less broad, and milder, effects on gene expression. Clinically relevant doses of TAC, but not VCS, directly inhibit insulin secretion from human islets, likely via transcriptional control of exocytosis machinery.
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Affiliation(s)
- Jelena Kolic
- Diabetes Research Group, Life Sciences Institute, Department of Cellular and Physiological Sciences & Department of Surgery, University of British Columbia, Vancouver, Canada
| | - Leanne Beet
- Diabetes Research Group, Life Sciences Institute, Department of Cellular and Physiological Sciences & Department of Surgery, University of British Columbia, Vancouver, Canada
| | - Peter Overby
- Diabetes Research Group, Life Sciences Institute, Department of Cellular and Physiological Sciences & Department of Surgery, University of British Columbia, Vancouver, Canada
| | - Haoning Howard Cen
- Diabetes Research Group, Life Sciences Institute, Department of Cellular and Physiological Sciences & Department of Surgery, University of British Columbia, Vancouver, Canada
| | - Evgeniy Panzhinskiy
- Diabetes Research Group, Life Sciences Institute, Department of Cellular and Physiological Sciences & Department of Surgery, University of British Columbia, Vancouver, Canada
| | - Daren R Ure
- Hepion Pharmaceuticals, Edmonton, Alberta, Canada
| | | | | | - James D Johnson
- Correspondence: Professor James D. Johnson, PhD, Faculty of Medicine, Department of Cellular and Physiological Sciences & Department of Surgery, The University of British Columbia, Life Sciences Institute, 5358 – 2350 Health Sciences Mall, Vancouver, British Columbia, Canada, V6T 1Z3. E-mail: ; Twitter: @JimJohnsonSci
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20
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Targeting Calcium Release-activated Calcium Channel Is Not Sufficient to Prevent Rejection in Nonhuman Primate Kidney Transplantation. Transplantation 2020; 104:970-980. [PMID: 32317615 DOI: 10.1097/tp.0000000000003078] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
BACKGROUND Calcineurin inhibitors successfully control rejection of transplanted organs but also cause nephrotoxicity. This study, using a rhesus monkey renal transplantation model, sought to determine the applicability of a new immunomodulatory drug inhibiting the store-operated calcium release-activated calcium channel of lymphocytes to control transplant rejection without nephrotoxicity. METHODS Animals underwent kidney transplantation and were treated with tacrolimus alone (n = 3), a CRACM1 inhibitor (PRCL-02) (n = 6) alone, or with initial tacrolimus monotherapy followed by gradual conversion at 3 weeks to PRCL-02 alone (n = 3). PRCL-02 was administered via a surgically inserted gastrostomy tube BID. RESULTS Dose-related drug exposure in monkeys was established and renal transplants were then performed using PRCL-02 monotherapy. Oral dosing of PRCL-02 was well tolerated and resulted in suppressed T-cell proliferation in in vitro MLR comparable to animals in the tacrolimus control arm. Animals receiving tacrolimus monotherapy were e on day 100 without rejection. PRCL-02 monotherapy only marginally prolonged graft survival (MST = 13.16 d; group 2) compared with untreated controls. Animals treated initially with tacrolimus and converted to PRCL-02 monotherapy had a mean graft survival of 35.3 days which was prolonged compared with PRCL-02 monotherapy but not compared with the tacrolimus-treated group. Pharmacokinetic studies showed inconsistent drug exposures despite attempts to adjust dose and exposure which may have contributed to the rejections. CONCLUSIONS We conclude that, in this nonhuman primate model of kidney transplantation, PRCL-02 demonstrated evidence of in vivo immunosuppressive activity but was inferior to tacrolimus treatment with respect to suppressing immune transplant rejection.
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21
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IGF-1 Deficiency Rescue and Intracellular Calcium Blockade Improves Survival and Corresponding Mechanisms in a Mouse Model of Acute Kidney Injury. Int J Mol Sci 2020; 21:ijms21114095. [PMID: 32521790 PMCID: PMC7312627 DOI: 10.3390/ijms21114095] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2020] [Revised: 06/03/2020] [Accepted: 06/03/2020] [Indexed: 02/07/2023] Open
Abstract
This study was undertaken to test two therapies for acute kidney injury (AKI) prevention, IGF-1, which is renal protective, and BTP-2, which is a calcium entry (SOCE) inhibitor. We utilized lipopolysaccharide (LPS) IP, as a systemic model of AKI and studied in five groups of animals. Three experiments showed that at 7 days: (1) LPS significantly reduced serum IGF-1 and intramuscular IGF-I in vivo gene therapy rescued this deficiency. (2) Next, at the 7-day time point, our combination therapy, compared to the untreated group, caused a significant increase in survival, which was noteworthy because all of the untreated animals died in 72 h. (3) The four pathways associated with inflammation, including (A) increase in cytosolic calcium, (B) elaboration of proinflammatory cytokines, (C) impairment of vascular integrity, and (D) cell injury, were adversely affected in renal tissue by LPS, using a sublethal dose of LPS. The expression of several genes was measured in each of the above pathways. The combined therapy of IGF-1 and BTP-2 caused a favorable gene expression response in all four pathways. Our current study was an AKI study, but these pathways are also involved in other types of severe inflammation, including sepsis, acute respiratory distress syndrome, and probably severe coronavirus infection.
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22
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Yu F, Wu F, Li F, Liao X, Wang Y, Li X, Wang C, Shi Y, Ye L. Wnt7b-induced Sox11 functions enhance self-renewal and osteogenic commitment of bone marrow mesenchymal stem cells. Stem Cells 2020; 38:1020-1033. [PMID: 32346881 DOI: 10.1002/stem.3192] [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: 03/06/2020] [Revised: 03/24/2020] [Accepted: 04/01/2020] [Indexed: 02/05/2023]
Abstract
As a profoundly anabolic regulator of bone, Wnt7b is well acknowledged to enhance osteoblast activities. Here, we report that bone marrow mesenchymal stem cells (BMSCs) are another important population responding to Wnt7b. In this study, we systematically investigated the in vivo role of Wnt7b in BMSCs using transgenic mice, high-throughput RNA-seq, immunohistochemistry, RT-qPCR, and in situ hybridization. These methods led us to uncover that Sox11 is induced via Wnt7b in BMSCs. Colony formation assay, flow cytometry, EdU incorporation labeling, RT-qPCR, and Western blot were conducted to detect the self-renewal capacity of BMSCs. Alkaline phosphatase staining, alizarin red staining, and ex vivo BMSCs transplantation were utilized to detect the osteogenic ability of BMSCs. ChIP-qPCR, shRNAs, and immunofluorescence staining were utilized to investigate the underlying mechanisms. Consequently, bone-derived Wnt7b was found to decrease in osteoporosis and elevate in bone fracture healing. During bone fracture healing, Wnt7b was particularly expressed in the mesenchymal cells residing within healing frontiers. RNA-seq data of Wnt7b-overexpressed bones uncovered the significant upregulation of Sox11. Histological results further unveiled that Sox11 is specifically increased in BMSCs. Wnt7b-induced Sox11 was demonstrated to reinforce both self-renewal and osteogenic differentiation of BMSCs. Mechanistically, Wnt7b activates the Ca2+ -dependent Nfatc1 signaling to directly induce Sox11 transcription, which in turn activates the transcriptions of both proliferation-related transcription factors (Ccnb1 and Sox2) and osteogenesis-related factors (Runx2, Sp7) in BMSCs. It is intriguing that this Wnt7b-Sox11 signaling in BMSCs is β-Catenin-independent. Overall, this study provides brand new insights of Wnt7b in bone formation, namely, Wnt7b can enhance both self-renewal and osteogenic differentiation of BMSCs via inducing Sox11. These findings present a new crosstalk between Wnt and Sox signaling in BMSCs.
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Affiliation(s)
- Fanyuan Yu
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, People's Republic of China.,Department of Endodontics, West China Stomatology Hospital, Sichuan University, Chengdu, People's Republic of China
| | - Fanzi Wu
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, People's Republic of China
| | - Feifei Li
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, People's Republic of China
| | - Xueyang Liao
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, People's Republic of China.,Department of Pediatric Dentistry, West China Hospital of Stomatology, Sichuan University, Chengdu, People's Republic of China
| | - Yitian Wang
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, People's Republic of China
| | - Xin Li
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, People's Republic of China
| | - Chenglin Wang
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, People's Republic of China.,Department of Endodontics, West China Stomatology Hospital, Sichuan University, Chengdu, People's Republic of China
| | - Yu Shi
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, People's Republic of China
| | - Ling Ye
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, People's Republic of China.,Department of Endodontics, West China Stomatology Hospital, Sichuan University, Chengdu, People's Republic of China
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23
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Hanna N, Kicka S, Chiriano G, Harrison C, Sakouhi HO, Trofimov V, Kranjc A, Nitschke J, Pagni M, Cosson P, Hilbi H, Scapozza L, Soldati T. Identification of Anti- Mycobacterium and Anti- Legionella Compounds With Potential Distinctive Structural Scaffolds From an HD-PBL Using Phenotypic Screens in Amoebae Host Models. Front Microbiol 2020; 11:266. [PMID: 32153546 PMCID: PMC7047896 DOI: 10.3389/fmicb.2020.00266] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2019] [Accepted: 02/05/2020] [Indexed: 12/22/2022] Open
Abstract
Tubercular Mycobacteria and Legionella pneumophila are the causative agents of potentially fatal respiratory diseases due to their intrinsic pathogenesis but also due to the emergence of antibiotic resistance that limits treatment options. The aim of our study was to explore the antimicrobial activity of a small ligand-based chemical library of 1255 structurally diverse compounds. These compounds were screened in a combination of three assays, two monitoring the intracellular growth of the pathogenic bacteria, Mycobacterium marinum and L. pneumophila, and one assessing virulence of M. marinum. We set up these assays using two amoeba strains, the genetically tractable social amoeba Dictyostelium discoideum and the free-living amoeba Acanthamoeba castellanii. In summary, 64 (5.1%) compounds showed anti-infective/anti-virulence activity in at least one of the three assays. The intracellular assays hit rate varied between 1.7% (n = 22) for M. marinum and 2.8% (n = 35) for L. pneumophila with seven compounds in common for both pathogens. In parallel, 1.2% (n = 15) of the tested compounds were able to restore D. discoideum growth in the presence of M. marinum spiked in a lawn of food bacteria. We also validated the generality of the hits identified in the A. castellanii–M. marinum anti-infective screen using the D. discoideum–M. marinum host–pathogen model. The characterization of anti-infective and antibacterial hits in the latter infection model revealed compounds able to reduce intracellular growth more than 50% at 30 μM. Moreover, the chemical space and physico-chemical properties of the anti-M. marinum hits were compared to standard and candidate Mycobacterium tuberculosis (Mtb) drugs using ChemGPS-NP. A principle component analysis identified separate clusters for anti-M. marinum and anti-L. pneumophila hits unveiling the potentially new physico-chemical properties of these hits compared to standard and candidate M. tuberculosis drugs. Our studies underscore the relevance of using a combination of low-cost and low-complexity assays with full 3R compliance in concert with a rationalized focused library of compounds to identify new chemical scaffolds and to dissect some of their properties prior to taking further steps toward compound development.
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Affiliation(s)
- Nabil Hanna
- Department of Biochemistry, Faculty of Sciences, University of Geneva, Geneva, Switzerland
| | - Sébastien Kicka
- Department of Biochemistry, Faculty of Sciences, University of Geneva, Geneva, Switzerland
| | - Gianpaolo Chiriano
- Pharmaceutical Biochemistry/Chemistry, School of Pharmaceutical Sciences, University of Geneva, Geneva, Switzerland
| | - Christopher Harrison
- Max von Pettenkofer Institute, Ludwig Maximilian University of Munich, Munich, Germany
| | - Hajer Ouertatani Sakouhi
- Department of Cell Physiology and Metabolism, Faculty of Medicine, University of Geneva, Geneva, Switzerland
| | - Valentin Trofimov
- Department of Biochemistry, Faculty of Sciences, University of Geneva, Geneva, Switzerland
| | - Agata Kranjc
- Pharmaceutical Biochemistry/Chemistry, School of Pharmaceutical Sciences, University of Geneva, Geneva, Switzerland
| | - Jahn Nitschke
- Department of Biochemistry, Faculty of Sciences, University of Geneva, Geneva, Switzerland
| | - Marco Pagni
- Swiss Institute of Bioinformatics, Lausanne, Switzerland
| | - Pierre Cosson
- Department of Cell Physiology and Metabolism, Faculty of Medicine, University of Geneva, Geneva, Switzerland
| | - Hubert Hilbi
- Institute of Medical Microbiology, University of Zurich, Zurich, Switzerland
| | - Leonardo Scapozza
- Pharmaceutical Biochemistry/Chemistry, School of Pharmaceutical Sciences, University of Geneva, Geneva, Switzerland
| | - Thierry Soldati
- Department of Biochemistry, Faculty of Sciences, University of Geneva, Geneva, Switzerland
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24
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Vervaet BA, Nast CC, Jayasumana C, Schreurs G, Roels F, Herath C, Kojc N, Samaee V, Rodrigo S, Gowrishankar S, Mousson C, Dassanayake R, Orantes CM, Vuiblet V, Rigothier C, D'Haese PC, De Broe ME. Chronic interstitial nephritis in agricultural communities is a toxin-induced proximal tubular nephropathy. Kidney Int 2019; 97:350-369. [PMID: 31892415 DOI: 10.1016/j.kint.2019.11.009] [Citation(s) in RCA: 53] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2018] [Revised: 09/09/2019] [Accepted: 10/10/2019] [Indexed: 12/16/2022]
Abstract
Almost 30 years after the detection of chronic interstitial nephritis in agricultural communities (CINAC) its etiology remains unknown. To help define this we examined 34 renal biopsies from Sri Lanka, El Salvador, India and France of patients with chronic kidney disease 2-3 and diagnosed with CINAC by light and electron microscopy. In addition to known histopathology, we identified a unique constellation of proximal tubular cell findings including large dysmorphic lysosomes with a light-medium electron-dense matrix containing dispersed dark electron-dense non-membrane bound "aggregates". These aggregates associated with varying degrees of cellular/tubular atrophy, apparent cell fragment shedding and no-weak proximal tubular cell proliferative capacity. Identical lysosomal lesions, identifiable by electron microscopy, were observed in 9% of renal transplant implantation biopsies, but were more prevalent in six month (50%) and 12 month (67%) protocol biopsies and in indication biopsies (76%) of calcineurin inhibitor treated transplant patients. The phenotype was also found associated with nephrotoxic drugs (lomustine, clomiphene, lithium, cocaine) and in some patients with light chain tubulopathy, all conditions that can be directly or indirectly linked to calcineurin pathway inhibition or modulation. One hundred biopsies of normal kidneys, drug/toxin induced nephropathies, and overt proteinuric patients of different etiologies to some extent could demonstrate the light microscopic proximal tubular cell changes, but rarely the electron microscopic lysosomal features. Rats treated with the calcineurin inhibitor cyclosporine for four weeks developed similar proximal tubular cell lysosomal alterations, which were absent in a dehydration group. Overall, the finding of an identical proximal tubular cell (lysosomal) lesion in CINAC and calcineurin inhibitor nephrotoxicity in different geographic regions suggests a common paradigm where CINAC patients undergo a tubulotoxic mechanism similar to calcineurin inhibitor nephrotoxicity.
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Affiliation(s)
| | - Cynthia C Nast
- Cedars-Sinai Medical Center, Los Angeles, California, USA
| | - Channa Jayasumana
- Faculty of Medicine, Rajatrata University of Sri Lanka, Anuradhapura, Sri Lanka
| | - Gerd Schreurs
- Laboratory of Pathophysiology, University Antwerp, Antwerp, Belgium
| | - Frank Roels
- Department of Pathology, Ghent University, Gent, Belgium
| | - Chula Herath
- Department of Nephrology, Sri Jayewardenepura General Hospital, Colombo, Sri Lanka
| | - Nika Kojc
- Institute of Pathology, Faculty of Medicine, University of Ljubljana, Ljubljana, Slovenia
| | - Vahid Samaee
- Electron Microscopy for Materials Science (EMAT), University of Antwerp, Antwerp, Belgium
| | - Sonali Rodrigo
- Department of Nephrology, Sri Jayewardenepura General Hospital, Colombo, Sri Lanka
| | | | - Christiane Mousson
- Department of Nephrology, Centre Hospitalier Universitaire de Dijon, Dijon, France
| | | | - Carlos M Orantes
- National Institute of Health, Ministry of Health of El Salvador, San Salvador, El Salvador
| | - Vincent Vuiblet
- Departments of Nephrology and Renal Pathology, Centre Hospitalier Universitaire de Reims, Reims, France
| | - Claire Rigothier
- Service Néphrologie, Transplantation, Dialyse et Aphérèses, Centre Hospitalier Universitaire de Bordeaux, Bordeaux, France
| | | | - Marc E De Broe
- Laboratory of Pathophysiology, University Antwerp, Antwerp, Belgium.
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Effect of Different Doses and Times of FK506 on Different Areas of the Hippocampus in the Rat Model of Transient Global Cerebral Ischemia-Reperfusion. Neurol Res Int 2019; 2019:8047672. [PMID: 31467711 PMCID: PMC6699343 DOI: 10.1155/2019/8047672] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2019] [Revised: 06/26/2019] [Accepted: 07/07/2019] [Indexed: 12/14/2022] Open
Abstract
Background Stroke is a major worldwide problem that is leading to a high mortality rate in humans. Ischemia, as the most common type of stroke, is characterized by tissue damage that can occur due to insufficient blood flow to the brain even for a brief duration, leading to the release of inflammatory factors, cytokines, and free radicals. In this study, we investigated the effective dose and injection time of FK506 as an immunophilin ligand for providing a suitable effect on cells of CA2, CA3, and dentate gyrus of the hippocampus. Methods In this in vivo study, a total of 48 male Wistar rats were divided into nine groups. The ischemia model was induced by the ligation of bilateral common carotid arteries. The doses of FK506 (3, 6, and 10 mg/kg) were administered intravenously (IV) at the beginning of reperfusion, followed by repeated injections (10 mg/kg) at 6, 24, 48, and 72 hours after ischemia, respectively. Brains were removed and prepared for Nissl staining and the TdT-mediated dUTP Nick End Labeling method. Results Data showed that global ischemia did not decrease the number of viable pyramidal cells in CA2 and CA3 regions, but significant differences were observed in the number of viable granular cells and apoptotic bodies in the dentate gyrus between the control and ischemia groups. Repeated doses of 6 mg/kg of FK506 at an interval of 48 hours were deemed to be the suitable dose and best time of injection. Conclusions It seems that FK506 can ameliorate the extent of apoptosis and may be a good candidate for the treatment of ischemia-induced brain damage.
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Baur J, Otto C, Steger U, Klein-Hessling S, Muhammad K, Pusch T, Murti K, Wismer R, Germer CT, Klein I, Müller N, Serfling E, Avots A. The Transcription Factor NFATc1 Supports the Rejection of Heterotopic Heart Allografts. Front Immunol 2018; 9:1338. [PMID: 29946322 PMCID: PMC6005848 DOI: 10.3389/fimmu.2018.01338] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2018] [Accepted: 05/29/2018] [Indexed: 12/17/2022] Open
Abstract
The immune suppressants cyclosporin A (CsA) and tacrolimus (FK506) are used worldwide in transplantation medicine to suppress graft rejection. Both CsA and FK506 inhibit the phosphatase calcineurin (CN) whose activity controls the immune receptor-mediated activation of lymphocytes. Downstream targets of CN in lymphocytes are the nuclear factors of activated T cells (NFATs). We show here that the activity of NFATc1, the most prominent NFAT factor in activated lymphocytes supports the acute rejection of heterotopic heart allografts. While ablation of NFATc1 in T cells prevented graft rejection, ectopic expression of inducible NFATc1/αA isoform led to rejection of heart allografts in recipient mice. Acceptance of transplanted hearts in mice bearing NFATc1-deficient T cells was accompanied by a reduction in number and cytotoxicity of graft infiltrating cells. In CD8+ T cells, NFATc1 controls numerous intracellular signaling pathways that lead to the metabolic switch to aerobic glycolysis and the expression of numerous lymphokines, chemokines, and their receptors, including Cxcr3 that supports the rejection of allogeneic heart transplants. These findings favors NFATc1 as a molecular target for the development of new strategies to control the cytotoxicity of T cells upon organ transplantation.
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Affiliation(s)
- Johannes Baur
- Department of General, Visceral, Vascular, and Pediatric Surgery, University Hospital of Würzburg, Würzburg, Germany
| | - Christoph Otto
- Experimental Surgery, Department of General, Visceral, Vascular, and Pediatric Surgery, University Hospital of Würzburg, Würzburg, Germany
| | - Ulrich Steger
- Department of General, Visceral, Vascular, and Pediatric Surgery, University Hospital of Würzburg, Würzburg, Germany
| | - Stefan Klein-Hessling
- Department of Molecular Pathology, Institute of Pathology, Comprehensive Cancer Center Mainfranken, Julius-Maximilians University of Würzburg, Würzburg, Germany
| | - Khalid Muhammad
- Department of Molecular Pathology, Institute of Pathology, Comprehensive Cancer Center Mainfranken, Julius-Maximilians University of Würzburg, Würzburg, Germany
| | - Tobias Pusch
- Department of Molecular Pathology, Institute of Pathology, Comprehensive Cancer Center Mainfranken, Julius-Maximilians University of Würzburg, Würzburg, Germany
| | - Krisna Murti
- Department of Molecular Pathology, Institute of Pathology, Comprehensive Cancer Center Mainfranken, Julius-Maximilians University of Würzburg, Würzburg, Germany
| | - Rhoda Wismer
- Department of Molecular Pathology, Institute of Pathology, Comprehensive Cancer Center Mainfranken, Julius-Maximilians University of Würzburg, Würzburg, Germany
| | - Christoph-Thomas Germer
- Department of General, Visceral, Vascular, and Pediatric Surgery, University Hospital of Würzburg, Würzburg, Germany
| | - Ingo Klein
- Transplant and Hepatobiliary Surgery, Department of General, Visceral, Vascular, and Pediatric Surgery, University Hospital of Würzburg, Würzburg, Germany
| | - Nora Müller
- Institute for Virology and Immunobiology, University of Würzburg, Würzburg, Germany
| | - Edgar Serfling
- Department of Molecular Pathology, Institute of Pathology, Comprehensive Cancer Center Mainfranken, Julius-Maximilians University of Würzburg, Würzburg, Germany
| | - Andris Avots
- Department of Molecular Pathology, Institute of Pathology, Comprehensive Cancer Center Mainfranken, Julius-Maximilians University of Würzburg, Würzburg, Germany
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Abstract
OBJECTIVE Ospemifene, an estrogen receptor agonist/antagonist approved for the treatment of dyspareunia and vaginal dryness in postmenopausal women, has potential new indications as an immune modulator. The overall objective of the present series of preclinical studies was to evaluate the immunomodulatory activity of ospemifene in combination with a peptide cancer vaccine. METHODS Immune regulating effects, mechanism of action and structure activity relationships of ospemifene and related compounds were evaluated by examining expression of T-cell activating cytokines in vitro, and antigen-specific immune response and cytotoxic T-lymphocyte activity in vivo. The effects of ospemifene (OSP) on the immune response to a peptide cancer vaccine (PV) were evaluated after chronic [control (n = 22); OSP 50 mg/kg (n = 16); PV (n = 6); OSP+PV (n = 11)], intermittent [control (n = 10); OSP 10 and 50 mg/kg (n = 11); PV (n = 11); combination treatment (n = 11 each dose)] and pretreatment [control; OSP 100 mg/kg; PV 100 μg; combination treatment (n = 8 all groups)] ospemifene oral dosing schedules in a total of 317 mixed-sex tumor-bearing and nontumor-bearing mice. RESULTS The results showed that ospemifene induced expression of the key TH1 cytokines interferon gamma and interleukin-2 in vitro, which may be mediated by stimulating T-cells through phosphoinositide 3-kinase and calmodulin signaling pathways. In combination with an antigen-specific peptide cancer vaccine, ospemifene increased antigen-specific immune response and increased cytotoxic T-lymphocyte activity in tumor-bearing and nontumor-bearing mice. The pretreatment, intermittent, and chronic dosing schedules of ospemifene activate naive T-cells, modulate antigen-induced tolerance and reduce tumor-associated, pro-inflammatory cytokines, respectively. CONCLUSIONS Taken together, ospemifene's dose response and schedule-dependent immune modulating activity offers a method of tailoring and augmenting the efficacy of previously failed antigen-specific cancer vaccines for a wide range of malignancies.
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Mencarelli A, Vacca M, Khameneh HJ, Acerbi E, Tay A, Zolezzi F, Poidinger M, Mortellaro A. Calcineurin B in CD4 + T Cells Prevents Autoimmune Colitis by Negatively Regulating the JAK/STAT Pathway. Front Immunol 2018. [PMID: 29515579 PMCID: PMC5826051 DOI: 10.3389/fimmu.2018.00261] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Calcineurin (Cn) is a protein phosphatase that regulates the activation of the nuclear factor of activated T-cells (NFAT) family of transcription factors, which are key regulators of T-cell development and function. Here, we generated a conditional Cnb1 mouse model in which Cnb1 was specifically deleted in CD4+ T cells (Cnb1CD4 mice) to delineate the role of the Cn–NFAT pathway in immune homeostasis of the intestine. The Cnb1CD4 mice developed severe, spontaneous colitis characterized at the molecular level by an increased T helper-1-cell response but an unaltered regulatory T-cell compartment. Antibiotic treatment ameliorated the intestinal inflammation observed in Cnb1CD4 mice, suggesting that the microbiota contributes to the onset of colitis. CD4+ T cells isolated from Cnb1CD4 mice produced high levels of IFNγ due to increased activation of the JAK2/STAT4 pathway induced by IL-12. Our data highlight that Cn signaling in CD4+ T cells is critical for intestinal immune homeostasis in part by inhibiting IL-12 responsiveness of CD4+ T cells.
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Affiliation(s)
- Andrea Mencarelli
- Singapore Immunology Network (SIgN), Agency for Science, Technology and Research (ASTAR), Singapore, Singapore
| | - Maurizio Vacca
- Singapore Immunology Network (SIgN), Agency for Science, Technology and Research (ASTAR), Singapore, Singapore.,Department of Microbiology and Immunology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
| | - Hanif Javanmard Khameneh
- Singapore Immunology Network (SIgN), Agency for Science, Technology and Research (ASTAR), Singapore, Singapore
| | - Enzo Acerbi
- Singapore Immunology Network (SIgN), Agency for Science, Technology and Research (ASTAR), Singapore, Singapore
| | - Alicia Tay
- Singapore Immunology Network (SIgN), Agency for Science, Technology and Research (ASTAR), Singapore, Singapore
| | - Francesca Zolezzi
- Singapore Immunology Network (SIgN), Agency for Science, Technology and Research (ASTAR), Singapore, Singapore
| | - Michael Poidinger
- Singapore Immunology Network (SIgN), Agency for Science, Technology and Research (ASTAR), Singapore, Singapore
| | - Alessandra Mortellaro
- Singapore Immunology Network (SIgN), Agency for Science, Technology and Research (ASTAR), Singapore, Singapore.,Department of Microbiology and Immunology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
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Inhibition of nuclear factor of activated T cells (NFAT) c3 activation attenuates acute lung injury and pulmonary edema in murine models of sepsis. Oncotarget 2018. [PMID: 29535830 PMCID: PMC5828182 DOI: 10.18632/oncotarget.24320] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
Specific therapies targeting cellular and molecular events of sepsis induced Acute Lung Injury (ALI) pathogenesis are lacking. We have reported a pivotal role for Nuclear Factors of Activated T cells (NFATc3) in regulating macrophage phenotype during sepsis induced ALI and subsequent studies demonstrate that NFATc3 transcriptionally regulates macrophage CCR2 and TNFα gene expression. Mouse pulmonary microvascular endothelial cell monolayer maintained a tighter barrier function when co-cultured with LPS stimulated NFATc3 deficient macrophages whereas wild type macrophages caused leaky monolayer barrier. More importantly, NFATc3 deficient mice showed decreased neutrophilic lung inflammation, improved alveolar capillary barrier function, arterial oxygen saturation and survival benefit in lethal CLP sepsis mouse models. In addition, survival of wild type mice subjected to the lethal CLP sepsis was not improved with broad-spectrum antibiotics, whereas the survival of NFATc3 deficient mice was improved to 40–60% when treated with imipenem. Passive adoptive transfer of NFATc3 deficient macrophages conferred protection against LPS induced ALI in wild type mice. Furthermore, CP9-ZIZIT, a highly potent, cell-permeable peptide inhibitor of Calcineurin inhibited NFATc3 activation. CP9-ZIZIT effectively reduced sepsis induced inflammatory cytokines and pulmonary edema in mice. Thus, this study demonstrates that inhibition of NFATc3 activation by CP9-ZIZIT provides a potential therapeutic option for attenuating sepsis induced ALI/pulmonary edema.
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30
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Effects of the Fruit Extract of Tribulus terrestris on Skin Inflammation in Mice with Oxazolone-Induced Atopic Dermatitis through Regulation of Calcium Channels, Orai-1 and TRPV3, and Mast Cell Activation. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2017; 2017:8312946. [PMID: 29348776 PMCID: PMC5733837 DOI: 10.1155/2017/8312946] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/29/2017] [Accepted: 10/23/2017] [Indexed: 11/17/2022]
Abstract
Ethnopharmacological Relevance In this study, we investigated the effects of Tribulus terrestris fruit (Leguminosae, Tribuli Fructus, TF) extract on oxazolone-induced atopic dermatitis in mice. Materials and Methods TF extract was prepared with 30% ethanol as solvent. The 1% TF extract with or without 0.1% HC was applied to the back skin daily for 24 days. Results 1% TF extract with 0.1% HC improved AD symptoms and reduced TEWL and symptom scores in AD mice. 1% TF extract with 0.1% HC inhibited skin inflammation through decrease in inflammatory cells infiltration as well as inhibition of Orai-1 expression in skin tissues. TF extract inhibited Orai-1 activity in Orai-1-STIM1 cooverexpressing HEK293T cells but increased TRPV3 activity in TRPV3-overexpressing HEK293T cells. TF extract decreased β-hexosaminidase release in RBL-2H3 cells. Conclusions The present study demonstrates that the topical application of TF extract improves skin inflammation in AD mice, and the mechanism for this effect appears to be related to the modulation of calcium channels and mast cell activation. This outcome suggests that the combination of TF and steroids could be a more effective and safe approach for AD treatment.
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Kurauchi Y, Kinoshita R, Mori A, Sakamoto K, Nakahara T, Ishii K. MEK/ERK- and calcineurin/NFAT-mediated mechanism of cerebral hyperemia and brain injury following NMDA receptor activation. Biochem Biophys Res Commun 2017; 488:329-334. [PMID: 28495529 DOI: 10.1016/j.bbrc.2017.05.043] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2017] [Accepted: 05/07/2017] [Indexed: 12/11/2022]
Abstract
N-methyl-d-aspartate (NMDA) receptor activation increases regional cerebral blood flow (rCBF) and induces neuronal injury, but similarities between these processes are poorly understood. In this study, by measuring rCBF in vivo, we identified a clear correlation between cerebral hyperemia and brain injury. NMDA receptor activation induced brain injury as a result of rCBF increase, which was attenuated by an inhibitor of mitogen-activated protein kinase or calcineurin. Moreover, NMDA induced phosphorylation of extracellular signal-regulated kinase (ERK) and nuclear translocation of nuclear factor of activated T-cell (NFAT) in neurons. Therefore, a MEK/ERK- and calcineurin/NFAT-mediated mechanism of neurovascular coupling underlies the pathophysiology of neurovascular disorders.
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Affiliation(s)
- Yuki Kurauchi
- Department of Molecular Pharmacology, Kitasato University School of Pharmaceutical Sciences, 5-9-1 Shirokane, Minato-ku, Tokyo 108-8641, Japan.
| | - Rintaro Kinoshita
- Department of Molecular Pharmacology, Kitasato University School of Pharmaceutical Sciences, 5-9-1 Shirokane, Minato-ku, Tokyo 108-8641, Japan
| | - Asami Mori
- Department of Molecular Pharmacology, Kitasato University School of Pharmaceutical Sciences, 5-9-1 Shirokane, Minato-ku, Tokyo 108-8641, Japan
| | - Kenji Sakamoto
- Department of Molecular Pharmacology, Kitasato University School of Pharmaceutical Sciences, 5-9-1 Shirokane, Minato-ku, Tokyo 108-8641, Japan
| | - Tsutomu Nakahara
- Department of Molecular Pharmacology, Kitasato University School of Pharmaceutical Sciences, 5-9-1 Shirokane, Minato-ku, Tokyo 108-8641, Japan
| | - Kunio Ishii
- Department of Molecular Pharmacology, Kitasato University School of Pharmaceutical Sciences, 5-9-1 Shirokane, Minato-ku, Tokyo 108-8641, Japan
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Zinn S, Sisignano M, Kern K, Pierre S, Tunaru S, Jordan H, Suo J, Treutlein EM, Angioni C, Ferreiros N, Leffler A, DeBruin N, Offermanns S, Geisslinger G, Scholich K. The leukotriene B4 receptors BLT1 and BLT2 form an antagonistic sensitizing system in peripheral sensory neurons. J Biol Chem 2017; 292:6123-6134. [PMID: 28242764 DOI: 10.1074/jbc.m116.769125] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2016] [Revised: 02/09/2017] [Indexed: 11/06/2022] Open
Abstract
Sensitization of the heat-activated ion channel transient receptor potential vanilloid 1 (TRPV1) through lipids is a fundamental mechanism during inflammation-induced peripheral sensitization. Leukotriene B4 is a proinflammatory lipid mediator whose role in peripheral nociceptive sensitization is not well understood to date. Two major G-protein-coupled receptors for leukotriene B4 have been identified: the high-affinity receptor BLT1 and the low-affinity receptor BLT2. Transcriptional screening for the expression G-protein-coupled receptors in murine dorsal root ganglia showed that both receptors were among the highest expressed in dorsal root ganglia. Calcium imaging revealed a sensitization of TRPV1-mediated calcium increases in a relative narrow concentration range for leukotriene B4 (100-200 nm). Selective antagonists and neurons from knock-out mice demonstrated a BLT1-dependent sensitization of TRPV1-mediated calcium increases. Accordingly, leukotriene B4-induced thermal hyperalgesia was mediated through BLT1 and TRPV1 as shown using the respective knock-out mice. Importantly, higher leukotriene B4 concentrations (>0.5 μm) and BLT2 agonists abolished sensitization of the TRPV1-mediated calcium increases. Also, BLT2 activation inhibited protein kinase C- and protein kinase A-mediated sensitization processes through the phosphatase calcineurin. Consequently, a selective BLT2-receptor agonist increased thermal and mechanical withdrawal thresholds during zymosan-induced inflammation. In accordance with these data, immunohistochemical analysis showed that both leukotriene B4 receptors were expressed in peripheral sensory neurons. Thus, the data show that the two leukotriene B4 receptors have opposing roles in the sensitization of peripheral sensory neurons forming a self-restricting system.
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Affiliation(s)
- Sebastian Zinn
- From the Institut für Klinische Pharmakologie, Pharmazentrum Frankfurt, Klinikum der Goethe-Universität Frankfurt, 60590 Frankfurt, Germany
| | - Marco Sisignano
- From the Institut für Klinische Pharmakologie, Pharmazentrum Frankfurt, Klinikum der Goethe-Universität Frankfurt, 60590 Frankfurt, Germany
| | - Katharina Kern
- From the Institut für Klinische Pharmakologie, Pharmazentrum Frankfurt, Klinikum der Goethe-Universität Frankfurt, 60590 Frankfurt, Germany
| | - Sandra Pierre
- From the Institut für Klinische Pharmakologie, Pharmazentrum Frankfurt, Klinikum der Goethe-Universität Frankfurt, 60590 Frankfurt, Germany
| | - Sorin Tunaru
- the Department of Pharmacology, Max Planck Institute for Heart and Lung Research, 61231 Bad Nauheim, Germany
| | - Holger Jordan
- the Fraunhofer Institute of Molecular Biology and Applied Ecology, Project Group Translational Medicine and Pharmacology, 60590 Frankfurt, Germany, and
| | - Jing Suo
- From the Institut für Klinische Pharmakologie, Pharmazentrum Frankfurt, Klinikum der Goethe-Universität Frankfurt, 60590 Frankfurt, Germany
| | - Elsa-Marie Treutlein
- From the Institut für Klinische Pharmakologie, Pharmazentrum Frankfurt, Klinikum der Goethe-Universität Frankfurt, 60590 Frankfurt, Germany
| | - Carlo Angioni
- From the Institut für Klinische Pharmakologie, Pharmazentrum Frankfurt, Klinikum der Goethe-Universität Frankfurt, 60590 Frankfurt, Germany
| | - Nerea Ferreiros
- From the Institut für Klinische Pharmakologie, Pharmazentrum Frankfurt, Klinikum der Goethe-Universität Frankfurt, 60590 Frankfurt, Germany
| | - Andreas Leffler
- the Department for Anaesthesiology and Critical Care Medicine, Hannover Medical School, 30625 Hannover, Germany
| | - Natasja DeBruin
- the Fraunhofer Institute of Molecular Biology and Applied Ecology, Project Group Translational Medicine and Pharmacology, 60590 Frankfurt, Germany, and
| | - Stefan Offermanns
- the Department of Pharmacology, Max Planck Institute for Heart and Lung Research, 61231 Bad Nauheim, Germany
| | - Gerd Geisslinger
- From the Institut für Klinische Pharmakologie, Pharmazentrum Frankfurt, Klinikum der Goethe-Universität Frankfurt, 60590 Frankfurt, Germany.,the Fraunhofer Institute of Molecular Biology and Applied Ecology, Project Group Translational Medicine and Pharmacology, 60590 Frankfurt, Germany, and
| | - Klaus Scholich
- From the Institut für Klinische Pharmakologie, Pharmazentrum Frankfurt, Klinikum der Goethe-Universität Frankfurt, 60590 Frankfurt, Germany,
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Parra V, Rothermel BA. Calcineurin signaling in the heart: The importance of time and place. J Mol Cell Cardiol 2017; 103:121-136. [PMID: 28007541 PMCID: PMC5778886 DOI: 10.1016/j.yjmcc.2016.12.006] [Citation(s) in RCA: 71] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/19/2016] [Revised: 12/12/2016] [Accepted: 12/16/2016] [Indexed: 12/20/2022]
Abstract
The calcium-activated protein phosphatase, calcineurin, lies at the intersection of protein phosphorylation and calcium signaling cascades, where it provides an essential nodal point for coordination between these two fundamental modes of intracellular communication. In excitatory cells, such as neurons and cardiomyocytes, that experience rapid and frequent changes in cytoplasmic calcium, calcineurin protein levels are exceptionally high, suggesting that these cells require high levels of calcineurin activity. Yet, it is widely recognized that excessive activation of calcineurin in the heart contributes to pathological hypertrophic remodeling and the progression to failure. How does a calcium activated enzyme function in the calcium-rich environment of the continuously contracting heart without pathological consequences? This review will discuss the wide range of calcineurin substrates relevant to cardiovascular health and the mechanisms calcineurin uses to find and act on appropriate substrates in the appropriate location while potentially avoiding others. Fundamental differences in calcineurin signaling in neonatal verses adult cardiomyocytes will be addressed as well as the importance of maintaining heterogeneity in calcineurin activity across the myocardium. Finally, we will discuss how circadian oscillations in calcineurin activity may facilitate integration with other essential but conflicting processes, allowing a healthy heart to reap the benefits of calcineurin signaling while avoiding the detrimental consequences of sustained calcineurin activity that can culminate in heart failure.
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Affiliation(s)
- Valentina Parra
- Advanced Centre for Chronic Disease (ACCDiS), Facultad Ciencias Quimicas y Farmaceuticas, Universidad de Chile, Santiago,Chile; Departamento de Bioquímica y Biología Molecular, Facultad de Ciencias Quimicas y Farmaceuticas, Universidad de Chie, Santiago, Chile
| | - Beverly A Rothermel
- Department of Internal Medicine (Cardiology Division), University of Texas Southwestern Medical Centre, Dallas, TX, USA; Department of Molecular Biology, University of Texas Southwestern Medical Centre, Dallas, TX, USA.
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Li L, Greene I, Readhead B, Menon MC, Kidd BA, Uzilov AV, Wei C, Philippe N, Schroppel B, He JC, Chen R, Dudley JT, Murphy B. Novel Therapeutics Identification for Fibrosis in Renal Allograft Using Integrative Informatics Approach. Sci Rep 2017; 7:39487. [PMID: 28051114 PMCID: PMC5209709 DOI: 10.1038/srep39487] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2016] [Accepted: 11/21/2016] [Indexed: 12/12/2022] Open
Abstract
Chronic allograft damage, defined by interstitial fibrosis and tubular atrophy (IF/TA), is a leading cause of allograft failure. Few effective therapeutic options are available to prevent the progression of IF/TA. We applied a meta-analysis approach on IF/TA molecular datasets in Gene Expression Omnibus to identify a robust 85-gene signature, which was used for computational drug repurposing analysis. Among the top ranked compounds predicted to be therapeutic for IF/TA were azathioprine, a drug to prevent acute rejection in renal transplantation, and kaempferol and esculetin, two drugs not previously described to have efficacy for IF/TA. We experimentally validated the anti-fibrosis effects of kaempferol and esculetin using renal tubular cells in vitro and in vivo in a mouse Unilateral Ureteric Obstruction (UUO) model. Kaempferol significantly attenuated TGF-β1-mediated profibrotic pathways in vitro and in vivo, while esculetin significantly inhibited Wnt/β-catenin pathway in vitro and in vivo. Histology confirmed significantly abrogated fibrosis by kaempferol and esculetin in vivo. We developed an integrative computational framework to identify kaempferol and esculetin as putatively novel therapies for IF/TA and provided experimental evidence for their therapeutic activities in vitro and in vivo using preclinical models. The findings suggest that both drugs might serve as therapeutic options for IF/TA.
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Affiliation(s)
- Li Li
- Department of Genetics and Genomic Sciences, Icahn School of Medicine at Mount Sinai, 770 exington Ave., New York, NY 10065, USA.,Institute for Next Generation Healthcare, Icahn School of Medicine at Mount Sinai
| | - Ilana Greene
- Division of Nephrology, Department of Medicine, Icahn School of Medicine at Mount Sinai, One Gustave L. Levy Place, New York, NY 10029, USA
| | - Benjamin Readhead
- Department of Genetics and Genomic Sciences, Icahn School of Medicine at Mount Sinai, 770 exington Ave., New York, NY 10065, USA.,Institute for Next Generation Healthcare, Icahn School of Medicine at Mount Sinai
| | - Madhav C Menon
- Division of Nephrology, Department of Medicine, Icahn School of Medicine at Mount Sinai, One Gustave L. Levy Place, New York, NY 10029, USA
| | - Brian A Kidd
- Department of Genetics and Genomic Sciences, Icahn School of Medicine at Mount Sinai, 770 exington Ave., New York, NY 10065, USA.,Institute for Next Generation Healthcare, Icahn School of Medicine at Mount Sinai
| | - Andrew V Uzilov
- Department of Genetics and Genomic Sciences, Icahn School of Medicine at Mount Sinai, 1255 5th Avenue, New York, NY 10029, USA
| | - Chengguo Wei
- Division of Nephrology, Department of Medicine, Icahn School of Medicine at Mount Sinai, One Gustave L. Levy Place, New York, NY 10029, USA
| | - Nimrod Philippe
- Division of Nephrology, Department of Medicine, Icahn School of Medicine at Mount Sinai, One Gustave L. Levy Place, New York, NY 10029, USA
| | - Bernd Schroppel
- Division of Nephrology, Department of Medicine, Icahn School of Medicine at Mount Sinai, One Gustave L. Levy Place, New York, NY 10029, USA.,Section of Nephrology, University of Ulm, Albert-Einstein-Allee 23, Ulm, 89081 Germany
| | - John Cijiang He
- Division of Nephrology, Department of Medicine, Icahn School of Medicine at Mount Sinai, One Gustave L. Levy Place, New York, NY 10029, USA
| | - Rong Chen
- Department of Genetics and Genomic Sciences, Icahn School of Medicine at Mount Sinai, 1255 5th Avenue, New York, NY 10029, USA
| | - Joel T Dudley
- Department of Genetics and Genomic Sciences, Icahn School of Medicine at Mount Sinai, 770 exington Ave., New York, NY 10065, USA.,Department of Health Policy and Research, Icahn School of Medicine at Mount Sinai, One Gustave L Levy Place, New York, NY 10029, USA.,Institute for Next Generation Healthcare, Icahn School of Medicine at Mount Sinai
| | - Barbara Murphy
- Division of Nephrology, Department of Medicine, Icahn School of Medicine at Mount Sinai, One Gustave L. Levy Place, New York, NY 10029, USA
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35
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Zeng X, Zhang Y, Wang S, Wang K, Tao L, Zou M, Chen N, Xu J, Liu S, Li X. Artesunate suppresses RANKL-induced osteoclastogenesis through inhibition of PLCγ1-Ca 2+ –NFATc1 signaling pathway and prevents ovariectomy-induced bone loss. Biochem Pharmacol 2017; 124:57-68. [DOI: 10.1016/j.bcp.2016.10.007] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2016] [Accepted: 10/21/2016] [Indexed: 11/29/2022]
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Schmiedeberg K, Krause H, Röhl FW, Hartig R, Jorch G, Brunner-Weinzierl MC. T Cells of Infants Are Mature, but Hyporeactive Due to Limited Ca2+ Influx. PLoS One 2016; 11:e0166633. [PMID: 27893767 PMCID: PMC5125607 DOI: 10.1371/journal.pone.0166633] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2016] [Accepted: 11/01/2016] [Indexed: 12/12/2022] Open
Abstract
CD4 T cells in human infants and adults differ in the initiation and strength of their responses. The molecular basis for these differences is not yet understood. To address this the principle key molecular events of TCR- and CD28-induced signaling in naive CD4 T cells, such as Ca2+ influx, NFAT expression, phosphorylation and translocation into the nucleus, ERK activation and IL-2 response, were analyzed over at least the first 3 years of life. We report dramatically reduced IL-2 and TNFα responses in naive CD31+ T cells during infancy. Looking at the obligatory Ca2+ influx required to induce T cell activation and proliferation, we demonstrate characteristic patterns of impairment for each stage of infancy that are partly due to the differential usage of Ca2+ stores. Consistent with those findings, translocation of NFATc2 is limited, but still dependent on Ca2+ influx as demonstrated by sensitivity to cyclosporin A (CsA) treatment. Thus weak Ca2+ influx functions as a catalyst for the implementation of restricted IL-2 response in T cells during infancy. Our studies also define limited mobilization of Ca2+ ions as a characteristic property of T cells during infancy. This work adds to our understanding of infants’ poor T cell responsiveness against pathogens.
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Affiliation(s)
- Kristin Schmiedeberg
- Department of Experimental Pediatrics, University Hospital, Otto-von-Guericke University, Magdeburg, Germany
| | - Hardy Krause
- Clinic of Pediatric Surgery University Hospital, Otto-von-Guericke University, Magdeburg, Germany
| | - Friedrich-Wilhelm Röhl
- Institute of Biometry and Medical Informatics University Hospital, Otto-von-Guericke University, Magdeburg, Germany
| | - Roland Hartig
- Institute for Molecular and Clinical Immunology, University Hospital, Otto-von-Guericke University, Magdeburg, Germany
| | - Gerhard Jorch
- Department of Experimental Pediatrics, University Hospital, Otto-von-Guericke University, Magdeburg, Germany
| | - Monika C. Brunner-Weinzierl
- Department of Experimental Pediatrics, University Hospital, Otto-von-Guericke University, Magdeburg, Germany
- * E-mail:
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Ye L, Gratton A, Hannan NJ, Cannon P, Deo M, Palmer KR, Tong S, Kaitu'u-Lino TJ, Brownfoot FC. Nuclear factor of activated T-cells (NFAT) regulates soluble fms-like tyrosine kinase-1 secretion (sFlt-1) from human placenta. Placenta 2016; 48:110-118. [PMID: 27871461 DOI: 10.1016/j.placenta.2016.10.013] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/13/2016] [Revised: 09/28/2016] [Accepted: 10/18/2016] [Indexed: 12/17/2022]
Abstract
INTRODUCTION Preeclampsia is a serious complication affecting 5-8% of pregnancies. Central to its pathogenesis is placental hypoxia and inflammation which leads to secretion of soluble fms-like tyrosine kinase 1 (sFlt-1). sFlt-1 causes widespread endothelial dysfunction. The molecular mechanisms regulating sFlt-1 production remain poorly understood. Recently, a binding site for the nuclear factor activated T cells (NFAT) transcription factor has been found on fms-like tyrosine kinase 1 (FLT-1) promoter. METHODS We assessed whether inhibiting NFAT impacts FLT-1, sFlt-1 and cytokine expression, as well as sFlt-1 secretion in primary cytotrophoblasts, placental explants and human umbilical vein endothelial cells (HUVECs). We investigated whether NFAT is regulated by hypoxia in primary cytotrophoblasts. We characterised the expression of NFAT1-4 in preterm preeclamptic compared to gestationally matched placentas. RESULTS Inhibiting NFAT reduced FLT-1 and sFlt-1 splice variant e15a transcription, concordant with reduced total sFlt-1 and sFlt-1 e15a secretion from primary human cytotrophoblasts. This effect appeared tissue specific as inhibiting NFAT did not change sFlt-1 secretion from endothelial cells. Inhibiting NFAT also reduced transcription of inflammatory cytokines IL-1β and IL-10 in primary cytotrophoblasts. NFAT1 and NFAT3 mRNA expression were significantly increased under hypoxia (1% O2). Inhibiting NFAT under hypoxia significantly reduced FLT-1 and sFlt-1 e15a transcription, but did not reduce sFlt-1 secretion. NFAT mRNA and protein localisation was not different in preeclamptic compared to gestationally matched placenta. DISCUSSION NFAT positively regulates placental FLT-1 and sFlt-1 e15a, secretion of sFlt-1 and inflammatory cytokine expression. It may be involved in the pathophysiology of preeclampsia.
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Affiliation(s)
- Louie Ye
- Translational Obstetrics Group, The Department of Obstetrics and Gynaecology, Mercy Hospital for Women, University of Melbourne, 163 Studley Rd, Heidelberg, 3084, Victoria, Australia
| | - Amy Gratton
- Translational Obstetrics Group, The Department of Obstetrics and Gynaecology, Mercy Hospital for Women, University of Melbourne, 163 Studley Rd, Heidelberg, 3084, Victoria, Australia
| | - Natalie J Hannan
- Translational Obstetrics Group, The Department of Obstetrics and Gynaecology, Mercy Hospital for Women, University of Melbourne, 163 Studley Rd, Heidelberg, 3084, Victoria, Australia
| | - Ping Cannon
- Translational Obstetrics Group, The Department of Obstetrics and Gynaecology, Mercy Hospital for Women, University of Melbourne, 163 Studley Rd, Heidelberg, 3084, Victoria, Australia
| | - Minh Deo
- Translational Obstetrics Group, The Department of Obstetrics and Gynaecology, Mercy Hospital for Women, University of Melbourne, 163 Studley Rd, Heidelberg, 3084, Victoria, Australia
| | - Kirsten R Palmer
- Department of Obstetrics and Gynaecology, Monash University, Monash Medical Centre, 246 Clayton Rd, Clayton, 3168, Victoria, Australia
| | - Stephen Tong
- Translational Obstetrics Group, The Department of Obstetrics and Gynaecology, Mercy Hospital for Women, University of Melbourne, 163 Studley Rd, Heidelberg, 3084, Victoria, Australia
| | - Tu'uhevaha J Kaitu'u-Lino
- Translational Obstetrics Group, The Department of Obstetrics and Gynaecology, Mercy Hospital for Women, University of Melbourne, 163 Studley Rd, Heidelberg, 3084, Victoria, Australia.
| | - Fiona C Brownfoot
- Translational Obstetrics Group, The Department of Obstetrics and Gynaecology, Mercy Hospital for Women, University of Melbourne, 163 Studley Rd, Heidelberg, 3084, Victoria, Australia
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38
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Calcineurin inhibitors impair neutrophil activity against Aspergillus fumigatus in allogeneic hematopoietic stem cell transplant recipients. J Allergy Clin Immunol 2016; 138:860-868. [DOI: 10.1016/j.jaci.2016.02.026] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2015] [Revised: 12/24/2015] [Accepted: 02/10/2016] [Indexed: 02/07/2023]
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Asadi F, Razmi A, Dehpour AR, Shafiei M. Tropisetron inhibits high glucose-induced calcineurin/NFAT hypertrophic pathway in H9c2 myocardial cells. ACTA ACUST UNITED AC 2016; 68:485-93. [PMID: 26945895 DOI: 10.1111/jphp.12522] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2015] [Accepted: 01/17/2016] [Indexed: 12/15/2022]
Abstract
OBJECTIVES Cardiomyocyte hypertrophy is an important structural feature of diabetic cardiomyopathy. Calcineurin/nuclear factor of activated T-cell (NFAT) pathway plays a central role in the pathogenesis of cardiac hypertrophy. The purpose of this study was to investigate the effects of tropisetron, a novel calcineurin inhibitor, on high glucose (HG)-induced cardiomyocyte hypertrophy and its underlying mechanism. METHODS H9c2 myocardial cells were treated with tropisetron or cyclosporine A 1 h before exposure to HG for 48 h. KEY FINDINGS Exposure to HG resulted in enhanced cell size, protein content and atrial natriuretic peptide (ANP) protein expression. HG significantly increased Ca(2+) level, calcineurin expression and nuclear translocation of NFATc4. Both tropisetron and cyclosporine A markedly prevented the hypertrophic characteristic features, calcineurin overexpression and nuclear localization of NFATc4 while intracellular Ca(2+) was not affected. CONCLUSION Our results showed that tropisetron may have protective effects against HG-induced cardiomyocyte hypertrophy. The mechanism responsible for this beneficial effect seems to be, at least in part, blockade of calcineurin/NFAT signalling pathway.
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Affiliation(s)
- Firouzeh Asadi
- Department of Pharmacology, School of Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Ali Razmi
- Medicinal Plants Research Center, Institute of Medicinal Plants ACECR, Karaj, Iran
| | - Ahmad Reza Dehpour
- Department of Pharmacology, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Massoumeh Shafiei
- Department of Pharmacology, School of Medicine, Iran University of Medical Sciences, Tehran, Iran
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40
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Fukuoka N, Harada M, Nishida A, Ito Y, Shiota H, Kataoka T. Eomesodermin promotes interferon-γ expression and binds to multiple conserved noncoding sequences across the Ifng locus in mouse thymoma cell lines. Genes Cells 2016; 21:146-62. [PMID: 26749212 DOI: 10.1111/gtc.12328] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2015] [Accepted: 11/23/2015] [Indexed: 01/03/2023]
Abstract
The T-box transcription factors T-bet and eomesodermin (Eomes) have been shown to regulate the lineage-specific expression of interferon-γ (IFN-γ). However, in contrast to T-bet, the role of Eomes in the expression of IFN-γ remains unclear. In this study, we investigated the Eomes-dependent expression of IFN-γ in the mouse thymoma BW5147 and EL4 cells, which do not express T-bet or Eomes. The ectopic expression of Eomes induced BW5147 and EL4 cells to produce IFN-γ in response to phorbol 12-myristate 13-acetate (PMA) and ionomycin (IM). In BW5147 cells, Eomes augmented luciferase activity driven by the Ifng promoter encoding from -2500 to +113 bp; however, it was not increased by a stimulation with PMA and IM. A chromatin immunoprecipitation assay showed that Eomes bound to the Ifng promoter and conserved noncoding sequence (CNS) -22 kb across the Ifng locus with high efficacy in BW5147 cells. Moreover, Eomes increased permissive histone modifications in the Ifng promoter and multiple CNSs. The stimulation with PMA and IM greatly augmented Eomes binding to CNS-54, CNS-34, CNS+19 and CNS+30, which was inhibited by FK506. These results indicated that Eomes bound to the Ifng promoter and multiple CNSs in stimulation-dependent and stimulation-independent manners.
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Affiliation(s)
- Natsuki Fukuoka
- Department of Applied Biology, Kyoto Institute of Technology, Matsugasaki, Sakyo-ku, Kyoto, 606-8585, Japan
| | - Misuzu Harada
- Department of Applied Biology, Kyoto Institute of Technology, Matsugasaki, Sakyo-ku, Kyoto, 606-8585, Japan
| | - Ai Nishida
- Department of Applied Biology, Kyoto Institute of Technology, Matsugasaki, Sakyo-ku, Kyoto, 606-8585, Japan
| | - Yuko Ito
- Department of Applied Biology, Kyoto Institute of Technology, Matsugasaki, Sakyo-ku, Kyoto, 606-8585, Japan
| | - Hideki Shiota
- Center for Biological Resources and Informatics, Tokyo Institute of Technology, 4259 Nagatsuta-cho, Midori-ku, Yokohama, 226-8501, Japan
| | - Takao Kataoka
- Department of Applied Biology, Kyoto Institute of Technology, Matsugasaki, Sakyo-ku, Kyoto, 606-8585, Japan.,Center for Biological Resources and Informatics, Tokyo Institute of Technology, 4259 Nagatsuta-cho, Midori-ku, Yokohama, 226-8501, Japan
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41
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Development of a Fluorescent Quenching Based High Throughput Assay to Screen for Calcineurin Inhibitors. PLoS One 2015; 10:e0131297. [PMID: 26176772 PMCID: PMC4503349 DOI: 10.1371/journal.pone.0131297] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2015] [Accepted: 05/11/2015] [Indexed: 01/11/2023] Open
Abstract
Currently there is no effective treatment available for major neurodegenerative disorders associated to protein misfolding, including Alzheimer's and Parkinson's disease. One of most promising therapeutic approaches under development focuses on inhibiting the misfolding and aggregation pathway. However, it is likely that by the time clinical symptoms appear, there is a large accumulation of misfolded aggregates and a very substantial damage to the brain. Thus, it seems that at the clinical stage of the disease it is necessary also to develop strategies aiming to prevent the neuronal damage produced by already formed misfolded aggregates. Chronic activation of calcineurin (CaN), a type IIB phosphatase, has been implicated as a pivotal molecule connecting synaptic loss and neuronal damage to protein misfolding. The fact that the crystal structure of CaN is also well established makes it an ideal target for drug discovery. CaN activity assays for High Throughput Screening (HTS) reported so far are based on absorbance. In this article we report the development of a fluorescent quenching based CaN activity assay suitable for robotic screening of large chemical libraries to find novel inhibitors. The assay yielded a Z score of 0.84 with coefficient of variance ≤ 15%. Our results also show that this assay can be used to identify CaN inhibitors with a wide range of potencies.
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42
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Harrison CF, Chiriano G, Finsel I, Manske C, Hoffmann C, Steiner B, Kranjc A, Patthey-Vuadens O, Kicka S, Trofimov V, Ouertatani-Sakouhi H, Soldati T, Scapozza L, Hilbi H. Amoebae-Based Screening Reveals a Novel Family of Compounds Restricting Intracellular Legionella pneumophila. ACS Infect Dis 2015; 1:327-38. [PMID: 27622823 DOI: 10.1021/acsinfecdis.5b00002] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
The causative agent of Legionnaires' disease, Legionella pneumophila, grows in environmental amoebae and mammalian macrophages within a distinct compartment, the 'Legionella-containing vacuole' (LCV). Intracellular bacteria are protected from many antibiotics, and thus are notoriously difficult to eradicate. To identify novel compounds that restrict intracellular bacterial replication, we previously developed an assay based on a coculture of amoebae and GFP-producing L. pneumophila. This assay was used to screen a pathway-based, highly diverse chemical library, referred to as the Sinergia library. In this work, we chose to focus on a group of 11 hit compounds, the majority of which originated from the query molecule CN585, a compound that targets the protein phosphatase calcineurin. Further studies on 78 related compound variants revealed crucial structural attributes, namely a triple-ring scaffold with a central triazine moiety, substituted in positions 3 and 5 by two piperidine or pyrrolidine rings, and in position 1 by an amine group bearing a single aliphatic chain moiety. The most effective compound, ZINC00615682, inhibited intracellular replication of L. pneumophila with an IC50 of approximately 20 nM in Acanthamoeba castellanii and slightly less efficiently in Dictyostelium discoideum or macrophages. Pharmacological and genetic attempts to implicate calcineurin in the intracellular replication of L. pneumophila failed. Taken together, these results show that the amoebae-based screen and structure-activity relationship analysis is suitable for the identification of novel inhibitors of the intracellular replication of L. pneumophila. The most potent compound identified in this study targets (an) as yet unidentified host factor(s).
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Affiliation(s)
- Christopher F. Harrison
- Max von Pettenkofer Institute, Department
of Medicine, Ludwig-Maximilians University Munich, 80336 Munich, Germany
| | - Gianpaolo Chiriano
- School of Pharmaceutical
Sciences, Department of Pharmaceutical Biochemistry, University of Geneva and University of Lausanne, 1211 Geneva, Switzerland
| | - Ivo Finsel
- Max von Pettenkofer Institute, Department
of Medicine, Ludwig-Maximilians University Munich, 80336 Munich, Germany
| | - Christian Manske
- Max von Pettenkofer Institute, Department
of Medicine, Ludwig-Maximilians University Munich, 80336 Munich, Germany
| | - Christine Hoffmann
- Max von Pettenkofer Institute, Department
of Medicine, Ludwig-Maximilians University Munich, 80336 Munich, Germany
| | - Bernhard Steiner
- Institute of Medical Microbiology, Department of Medicine, University of Zurich, Gloriastrasse 30/32, 8006 Zurich, Switzerland
| | - Agata Kranjc
- School of Pharmaceutical
Sciences, Department of Pharmaceutical Biochemistry, University of Geneva and University of Lausanne, 1211 Geneva, Switzerland
| | - Ophelie Patthey-Vuadens
- School of Pharmaceutical
Sciences, Department of Pharmaceutical Biochemistry, University of Geneva and University of Lausanne, 1211 Geneva, Switzerland
| | | | | | | | | | - Leonardo Scapozza
- School of Pharmaceutical
Sciences, Department of Pharmaceutical Biochemistry, University of Geneva and University of Lausanne, 1211 Geneva, Switzerland
| | - Hubert Hilbi
- Max von Pettenkofer Institute, Department
of Medicine, Ludwig-Maximilians University Munich, 80336 Munich, Germany
- Institute of Medical Microbiology, Department of Medicine, University of Zurich, Gloriastrasse 30/32, 8006 Zurich, Switzerland
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An imaging flow cytometry-based approach to measuring the spatiotemporal calcium mobilisation in activated T cells. J Immunol Methods 2015; 423:120-30. [PMID: 25967946 DOI: 10.1016/j.jim.2015.04.030] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2014] [Revised: 03/22/2015] [Accepted: 04/30/2015] [Indexed: 11/22/2022]
Abstract
Calcium ions (Ca(2+)) are a ubiquitous transducer of cellular signals controlling key processes such as proliferation, differentiation, secretion and metabolism. In the context of T cells, stimulation through the T cell receptor has been shown to induce the release of Ca(2+) from intracellular stores. This sudden elevation within the cytoplasm triggers the opening of ion channels in the plasma membrane allowing an influx of extracellular Ca(2+) that in turn activates key molecules such as calcineurin. This cascade ultimately results in gene transcription and changes in the cellular state. Traditional methods for measuring Ca(2+) include spectrophotometry, conventional flow cytometry (CFC) and live cell imaging techniques. While each method has strengths and weaknesses, none can offer a detailed picture of Ca(2+) mobilisation in response to various agonists. Here we report an Imaging Flow Cytometry (IFC)-based method that combines the throughput and statistical rigour of CFC with the spatial information of a microscope. By co-staining cells with Ca(2+) indicators and organelle-specific dyes we can address the spatiotemporal patterns of Ca(2+) flux in Jurkat cells after stimulation with anti-CD3. The multispectral, high-throughput nature of IFC means that the organelle co-staining functions to direct the measurement of Ca(2+) indicator fluorescence to either the endoplasmic reticulum (ER) or the mitochondrial compartments without the need to treat cells with detergents such as digitonin to eliminate cytoplasmic background. We have used this system to look at the cellular localisation of Ca(2+) after stimulating cells with CD3, thapsigargin or ionomycin in the presence or absence of extracellular Ca(2+). Our data suggest that there is a dynamic interplay between the ER and mitochondrial compartments and that mitochondria act as a sink for both intracellular and extracellular derived Ca(2+). Moreover, by generating an NFAT-GFP expressing Jurkat line, we were able to combine mitochondrial Ca(2+) measurements with nuclear translocation. In conclusion, this method enables the high throughput study of spatiotemporal patterns of Ca2(+) signals in T cells responding to different stimuli.
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Cen J, Wang M, Jiang G, Yin Y, Su Z, Tong L, luo J, Ma Y, Gao Y, Wei Q. The new immunosuppressant, isogarcinol, binds directly to its target enzyme calcineurin, unlike cyclosporin A and tacrolimus. Biochimie 2015; 111:119-24. [DOI: 10.1016/j.biochi.2015.02.004] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2014] [Accepted: 02/09/2015] [Indexed: 12/26/2022]
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45
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Shou J, Jing J, Xie J, You L, Jing Z, Yao J, Han W, Pan H. Nuclear factor of activated T cells in cancer development and treatment. Cancer Lett 2015; 361:174-84. [PMID: 25766658 DOI: 10.1016/j.canlet.2015.03.005] [Citation(s) in RCA: 82] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2015] [Revised: 03/04/2015] [Accepted: 03/04/2015] [Indexed: 01/03/2023]
Abstract
Since nuclear factor of activated T cells (NFAT) was first identified as a transcription factor in T cells, various NFAT isoforms have been discovered and investigated. Accumulating studies have suggested that NFATs are involved in many aspects of cancer, including carcinogenesis, cancer cell proliferation, metastasis, drug resistance and tumor microenvironment. Different NFAT isoforms have distinct functions in different cancers. The exact function of NFAT in cancer or the tumor microenvironment is context dependent. In this review, we summarize our current knowledge of NFAT regulation and function in cancer development and treatment. NFATs have emerged as a potential target for cancer prevention and therapy.
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Affiliation(s)
- Jiawei Shou
- Department of Medical Oncology, Institute of Clinical Science, Sir Run Run Shaw Hospital, College of Medicine, Zhejiang University, Hangzhou, Zhejiang, China
| | - Jing Jing
- Department of Medical Oncology, Tongde Hospital of Zhejiang Province, Hangzhou, Zhejiang, China
| | - Jiansheng Xie
- Laboratory of Cancer Biology, Institute of Clinical Science, Sir Run Run Shaw Hospital, College of Medicine, Zhejiang University, Hangzhou, Zhejiang, China
| | - Liangkun You
- Department of Medical Oncology, Institute of Clinical Science, Sir Run Run Shaw Hospital, College of Medicine, Zhejiang University, Hangzhou, Zhejiang, China
| | - Zhao Jing
- Department of Medical Oncology, Institute of Clinical Science, Sir Run Run Shaw Hospital, College of Medicine, Zhejiang University, Hangzhou, Zhejiang, China
| | - Junlin Yao
- Department of Medical Oncology, Institute of Clinical Science, Sir Run Run Shaw Hospital, College of Medicine, Zhejiang University, Hangzhou, Zhejiang, China
| | - Weidong Han
- Department of Medical Oncology, Institute of Clinical Science, Sir Run Run Shaw Hospital, College of Medicine, Zhejiang University, Hangzhou, Zhejiang, China; Laboratory of Cancer Biology, Institute of Clinical Science, Sir Run Run Shaw Hospital, College of Medicine, Zhejiang University, Hangzhou, Zhejiang, China.
| | - Hongming Pan
- Department of Medical Oncology, Institute of Clinical Science, Sir Run Run Shaw Hospital, College of Medicine, Zhejiang University, Hangzhou, Zhejiang, China; Laboratory of Cancer Biology, Institute of Clinical Science, Sir Run Run Shaw Hospital, College of Medicine, Zhejiang University, Hangzhou, Zhejiang, China
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Selective NFAT targeting in T cells ameliorates GvHD while maintaining antitumor activity. Proc Natl Acad Sci U S A 2015; 112:1125-30. [PMID: 25583478 DOI: 10.1073/pnas.1409290112] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
Abstract
Graft-versus-host disease (GvHD) is a life-threatening immunological complication after allogenic hematopoietic stem cell transplantation (allo-HCT). The intrinsic graft-versus-leukemia (GvL) effect, however, is the desirable curative benefit. Patients with acute GvHD are treated with cyclosporine A (CsA) or tacrolimus (FK506), which not only often causes severe adverse effects, but also interferes with the anticipated GvL. Both drugs inhibit calcineurin, thus at first suppressing activation of the nuclear factor of activated T cells (NFAT). Therefore, we explored the specific contribution of individual NFAT factors in donor T cells in animal models of GvHD and GvL. Ablation of NFAT1, NFAT2, or a combination of both resulted in ameliorated GvHD, due to reduced proliferation, target tissue homing, and impaired effector function of allogenic donor T cells. In contrast, the frequency of Foxp3(+) regulatory T (Treg) cells was increased and NFAT-deficient Tregs were fully protective in GvHD. CD8(+) T-cell recall response and, importantly, the beneficial antitumor activity were largely preserved in NFAT-deficient effector T cells. Thus, specific inhibition of NFAT opens an avenue for an advanced therapy of GvHD maintaining protective GvL.
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Huang W, Ling S, Jia X, Lin B, Huang X, Zhong J, Li W, Lin X, Sun Y, Yuan J. Tacrolimus (FK506) suppresses TREM-1 expression at an early but not at a late stage in a murine model of fungal keratitis. PLoS One 2014; 9:e114386. [PMID: 25464008 PMCID: PMC4252117 DOI: 10.1371/journal.pone.0114386] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2014] [Accepted: 11/06/2014] [Indexed: 11/18/2022] Open
Abstract
PURPOSE To investigate the efficacy and mechanism of tacrolimus(FK506), which is a novel macrolide immunosuppressant, in inhibiting triggering receptor expressed on myeloid cells-1 (TREM-1) expression in a murine keratitis model induced by Aspergillus fumigatus. METHOD TREM-1 was detected in 11 fungus-infected human corneas by quantitative real-time PCR (qRT-PCR). RAW264.7 macrophages were divided into four groups, which received treatment with zymosan (100 µg/ml), zymosan (100 µg/ml) + mTREM-1/Fc protein (1 µg/ml), or zymosan (100 µg/ml) + FK506 (20 µM) or negative-control treatment. After this treatment, the expression of TREM-1, interleukin-1β (IL-1β) and tumor necrosis factor α (TNFα) was assayed using qRT-PCR and ELISA. The mouse model of fungal keratitis was created by intrastromal injection with Aspergillus fumigatus, and the mice were divided into 2 groups: group A received vehicle eye drops 4 times each day, and group B received 4 doses of FK506 eye drops each day. Corneal damage was evaluated by clinical scoring and histologic examination,and myeloperoxidase (MPO) protein levels were also detected by ELISA. The expression of TREM-1, IL-1β and TNFα was then determined at different time points using qRT-PCR and ELISA. RESULTS TREM-1 expression dramatically increased in the human corneas with fungal keratitis. In contrast, FK506 reduced the expression of TREM-1, IL-1β and TNFα in RAW264.7 macrophages stimulated with zymosan. In the mouse model, at day 1 post-infection, the corneal score of the FK506-treated group was lower than that of the control, and polymorphonuclear neutrophil (PMN) infiltration was diminished. TREM-1, IL-1β and TNFα expression was significantly reduced at the same time point. However, the statistically significant differences in cytokine expression, clinical scores and infiltration disappeared at 5 days post-infection. CONCLUSIONS FK506 may inhibit the inflammation induced by fungi and alleviate the severity of corneal damage at an early stage of fungal keratitis by downregulating TREM-1 expression.
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Affiliation(s)
- Weilan Huang
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center of Sun Yat-sen University, Guangzhou, China
- Physical Examination Center, The Third Affiliated Hospital of Sun Yat-Sen University-Lingnan Hospital, Guangzhou, China
| | - Shiqi Ling
- Department of Ophthalmology, The Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, China
| | - Xiuhua Jia
- Department of Ophthalmology, The Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, China
| | - Binwu Lin
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center of Sun Yat-sen University, Guangzhou, China
| | - Xi Huang
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center of Sun Yat-sen University, Guangzhou, China
| | - Jing Zhong
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center of Sun Yat-sen University, Guangzhou, China
| | - Weihua Li
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center of Sun Yat-sen University, Guangzhou, China
| | - Xiaolei Lin
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center of Sun Yat-sen University, Guangzhou, China
| | - Yifang Sun
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center of Sun Yat-sen University, Guangzhou, China
| | - Jin Yuan
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center of Sun Yat-sen University, Guangzhou, China
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Jara E, Hidalgo MA, Hancke JL, Hidalgo AI, Brauchi S, Nuñez L, Villalobos C, Burgos RA. Delphinidin activates NFAT and induces IL-2 production through SOCE in T cells. Cell Biochem Biophys 2014; 68:497-509. [PMID: 23943055 DOI: 10.1007/s12013-013-9728-z] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Delphinidin is an anthocyanidin that possesses antioxidant and anti-inflammatory effects; however, some reports suggest that delphinidin has pro-inflammatory properties. For this reason, we assessed the effect of delphinidin on cytokine production in T cells. We demonstrated that delphinidin increased the cytosolic-free Ca(2+) concentration by releasing Ca(2+) from intracellular stores and increasing Ca(2+) entry. The putative Ca(2+) release activated Ca(2+) (CRAC) channel inhibitors BTP2 and gadolinium reduced the calcium entry stimulated by the anthocyanidin. Delphinidin induced nuclear factor of activated T cells (NFAT) translocation and NFAT-Luc activity in Jurkat cells and was dependent on the CRAC channel and calcineurin pathway. Delphinidin increased the mRNA expression and production of IL-2 in Jurkat cells and was inhibited by BTP2 and cyclosporine A. Using peripheral blood lymphocytes, we demonstrated that delphinidin increased the production of IL-2 and IFN-γ and was inhibited by BTP2. Taken together, our results suggest that delphinidin exerts immunostimulatory effects on T cells by increasing cytokine production through CRAC channel and NFAT activation.
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Affiliation(s)
- Evelyn Jara
- Institute of Pharmacology and Morphophysiology, Universidad Austral de Chile, P.O. Box 567, Valdivia, Chile
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Yan JC, Xu LJ, Wang CP, Wang ZQ. Effects of OX40-OX40L interaction on the nuclear factor of activated T cells c1 in ApoE-deficient mice. Inflammation 2014; 37:205-13. [PMID: 24045961 DOI: 10.1007/s10753-013-9731-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
We previously reported the emerging role of OX40-OX40L interaction in inflammation and atherosclerosis. However, the mechanism by which OX40-OX40L interaction contributes to pathogenesis is poorly understood. This study investigated the effects of OX40-OX40L interaction on the nuclear factor of activated T cells c1 (NFATc1) in ApoE(-/-) mice. Atherosclerotic plaque was induced via rapid perivascular carotid collar placement in ApoE(-/-) mice. The expression levels of OX40, OX40L, and NFATc1 in the lymphocytes were measured via real-time polymerase chain reaction and flow cytometry. The presence of NFATc1 in the atherosclerotic plaque was detected via immunohistochemistry, and the level of IL-4 was measured via enzyme-linked immunosorbent assay. The expression level of NFATc1 significantly increased in atherosclerotic lesion and in the leukocytes from the ApoE(-/-) mice. After stimulating OX40-OX40L interaction, the mRNA and protein expression levels of NFATc1 in the lymphocytes significantly increased. Meanwhile, anti-OX40LmAb significantly suppressed the expression of NFATc1 in the leukocytes and substantially elevated the level of IL-4. NFATc1 inhibitor markedly suppressed IL-4 production. This study suggests that OX40-OX40L interaction regulates the expression of NFATc1, which may play a critical role in atherosclerotic plaque formation, and may therefore have implications with pathophysiology of atherosclerosis.
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Affiliation(s)
- Jin-chuan Yan
- Department of Cardiology, Affiliated Hospital of Jiangsu University, Zhenjiang, Jiangsu Province, 212001, China,
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Qian Z, Dougherty PG, Liu T, Oottikkal S, Hogan PG, Hadad CM, Pei D. Structure-based optimization of a peptidyl inhibitor against calcineurin-nuclear factor of activated T cell (NFAT) interaction. J Med Chem 2014; 57:7792-7. [PMID: 25162754 PMCID: PMC4174996 DOI: 10.1021/jm500743t] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
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Calcineurin
inhibitors such as cyclosporine A and FK506 are effective
immunosuppressants but produce severe side effects. Rational modification
of a previously reported peptide inhibitor, GPHPVIVITGPHEE (KD ∼ 500 nM), by replacing the two valine
residues with tert-leucine and the C-terminal proline
with a cis-proline analogue, gave an improved inhibitor
ZIZIT-cisPro, which binds to calcineurin with a KD value of 2.6 nM and is more resistant to proteolysis.
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Affiliation(s)
- Ziqing Qian
- Department of Chemistry and Biochemistry, The Ohio State University , 484 West 12th Avenue, Columbus, Ohio 43210, United States
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