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Liang J, Bao D, Ye Z, Cao B, Lu Z, Chen J. Neferine alleviates ovariectomy-induced osteoporosis by enhancing osteogenic differentiation of bone marrow mesenchymal stem cells via regulation of the p38MAPK pathway. Connect Tissue Res 2024; 65:253-264. [PMID: 38753365 DOI: 10.1080/03008207.2024.2351097] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/13/2024] [Accepted: 04/29/2024] [Indexed: 05/31/2024]
Abstract
OBJECTIVE Osteoporosis, a skeletal ailment marked by bone metabolism imbalance and disruption of bone microarchitecture, Neferine, a bisbenzylisoquinoline alkaloid with diverse pharmacological activities, has received limited attention in the context of osteoporosis treatment. METHODS We employed a bilateral ovariectomy (OVX) rat model to induce osteoporosis and subsequently administered Neferine treatment for four weeks following successful model establishment. Throughout the modeling and treatment phases, we closely monitored rat body weights. We assessed alterations in bone tissue microstructure through micro-CT, HE staining, and safranin O-fast green staining. Levels of bone formation and resorption markers in serum were evaluated using ELISA assay. Western blot analysis was employed to determine the expression levels of p38MAPK, p-p38MAPK, and bone formation-related genes in bone tissue. We isolated and cultured OVX rat BMSCs (OVX-BMSCs) and induced osteogenic differentiation while simultaneously introducing Neferine and the p38MAPK inhibitor SB203580 for intervention. RESULTS Neferine treatment effectively curbed the rapid weight gain in OVX rats, ameliorated bone loss, and decreased serum levels of TRAP, CTX-I, PINP, and BALP. Most notably, Neferine promoted the expression of bone formation-related factors in bone tissue of OVX rats, while concurrently activating the p38MAPK signaling pathway. In in vitro experiments, Neferine facilitated the expression of bone formation-related factors in OVX-BMSCs, increased the osteogenic differentiation potential of OVX-BMSCs, and activated the p38MAPK signaling pathway. Nevertheless, SB203580 partially reversed Neferine's promotive effect. CONCLUSION Neferine can boost the osteoblastic differentiation of BMSCs and alleviate OVX-induced osteoporosis in rats by activating the p38MAPK signaling pathway.
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Affiliation(s)
- Jianwei Liang
- Department of Orthopedics, Taizhou First People's Hospital, Taizhou, China
| | - Dandan Bao
- Department of Pharmacy, Taizhou First People's Hospital, Taizhou, China
| | - Zhan Ye
- Department of Orthopedics, Taizhou First People's Hospital, Taizhou, China
| | - Binhao Cao
- Department of Orthopedics, Taizhou First People's Hospital, Taizhou, China
| | - Zhenyu Lu
- Department of Orthopedics, Taizhou First People's Hospital, Taizhou, China
| | - Jianjun Chen
- Department of Orthopedics, Taizhou First People's Hospital, Taizhou, China
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2
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Cree T, Gomez TR, Timpani CA, Rybalka E, Price JT, Goodman CA. FKBP25 regulates myoblast viability and migration and is differentially expressed in in vivo models of muscle adaptation. FEBS J 2023; 290:4660-4678. [PMID: 37345229 DOI: 10.1111/febs.16894] [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: 09/01/2022] [Revised: 04/18/2023] [Accepted: 06/21/2023] [Indexed: 06/23/2023]
Abstract
FKBP25 (FKBP3 gene) is a dual-domain PPIase protein that consists of a C-terminal PPIase domain and an N-terminal basic tilted helix bundle (BTHB). The PPIase domain of FKBP25 has been shown to bind to microtubules, which has impacts upon microtubule polymerisation and cell cycle progression. Using quantitative proteomics, it was recently found that FKBP25 was expressed in the top 10% of the mouse skeletal muscle proteome. However, to date there have been few studies investigating the role of FKBP25 in non-transformed systems. As such, this study aimed to investigate potential roles for FKBP25 in myoblast viability, migration and differentiation and in adaptation of mature skeletal muscle. Doxycycline-inducible FKBP25 knockdown in C2C12 myoblasts revealed an increase in cell accumulation/viability and migration in vitro that was independent of alterations in tubulin dynamics; however, FKBP25 knockdown had no discernible impact on myoblast differentiation into myotubes. Finally, a series of in vivo models of muscle adaptation were assessed, where it was observed that FKBP25 protein expression was increased in hypertrophy and regeneration conditions (chronic mechanical overload and the mdx model of Duchenne muscular dystrophy) but decreased in an atrophy model (denervation). Overall, the findings of this study establish FKBP25 as a regulator of myoblast viability and migration, with possible implications for satellite cell proliferation and migration and muscle regeneration, and as a potential regulator of in vivo skeletal muscle adaptation.
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Affiliation(s)
- Tabitha Cree
- Institute for Health and Sport (IHeS), Victoria University, Melbourne, Australia
- Australian Institute for Musculoskeletal Science (AIMSS), St Albans, Australia
| | - Tania Ruz Gomez
- Institute for Health and Sport (IHeS), Victoria University, Melbourne, Australia
| | - Cara A Timpani
- Institute for Health and Sport (IHeS), Victoria University, Melbourne, Australia
- Australian Institute for Musculoskeletal Science (AIMSS), St Albans, Australia
| | - Emma Rybalka
- Institute for Health and Sport (IHeS), Victoria University, Melbourne, Australia
- Australian Institute for Musculoskeletal Science (AIMSS), St Albans, Australia
| | - John T Price
- Institute for Health and Sport (IHeS), Victoria University, Melbourne, Australia
- Australian Institute for Musculoskeletal Science (AIMSS), St Albans, Australia
- Department of Biochemistry and Molecular Biology, Monash University, Clayton, Australia
- Monash Biomedicine Discovery Institute, Clayton, Australia
| | - Craig A Goodman
- Institute for Health and Sport (IHeS), Victoria University, Melbourne, Australia
- Australian Institute for Musculoskeletal Science (AIMSS), St Albans, Australia
- Department of Physiology, Centre for Muscle Research (CMR), The University of Melbourne, Parkville, Australia
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3
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Li S, Xie X, Peng F, Du J, Peng C. Regulation of temozolomide resistance via lncRNAs: Clinical and biological properties of lncRNAs in gliomas (Review). Int J Oncol 2022; 61:101. [PMID: 35796022 PMCID: PMC9291250 DOI: 10.3892/ijo.2022.5391] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2022] [Accepted: 06/10/2022] [Indexed: 11/05/2022] Open
Abstract
Gliomas are a primary types of intracranial malignancies and are characterized by a poor prognosis due to aggressive recurrence profiles. Temozolomide (TMZ) is an auxiliary alkylating agent that is extensively used in conjunction with surgical resection and forms the mainstay of clinical treatment strategies for gliomas. However, the frequent occurrence of TMZ resistance in clinical practice limits its therapeutic efficacy. Accumulating evidence has demonstrated that long non‑coding RNAs (lncRNAs) can play key and varied roles in glioma progression. lncRNAs have been reported to inhibit glioma progression by targeting various signaling pathways. In addition, the differential expression of lncRNAs has also been found to mediate the resistance of glioma to several chemotherapeutic agents, particularly to TMZ. The present review article therefore summarizes the findings of previous studies in an aim to report the significance and function of lncRNAs in regulating the chemoresistance of gliomas. The present review may provide further insight into the clinical treatment of gliomas.
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Affiliation(s)
- Sui Li
- Department of Pharmacology, Key Laboratory of Drug-Targeting and Drug Delivery System of The Education Ministry, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu, Sichuan 610041, P.R. China
| | - Xiaofang Xie
- State Key Laboratory of Southwestern Chinese Medicine Resources, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, Sichuan 611137, P.R. China
| | - Fu Peng
- Department of Pharmacology, Key Laboratory of Drug-Targeting and Drug Delivery System of The Education Ministry, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu, Sichuan 610041, P.R. China
- Correspondence to: Dr Fu Peng or Professor Junrong Du, Department of Pharmacology, Key Laboratory of Drug-Targeting and Drug Delivery System of The Education Ministry, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, 17 Renmin South Road, Chengdu, Sichuan 610041, P.R. China, E-mail: , E-mail:
| | - Junrong Du
- Department of Pharmacology, Key Laboratory of Drug-Targeting and Drug Delivery System of The Education Ministry, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu, Sichuan 610041, P.R. China
- Correspondence to: Dr Fu Peng or Professor Junrong Du, Department of Pharmacology, Key Laboratory of Drug-Targeting and Drug Delivery System of The Education Ministry, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, 17 Renmin South Road, Chengdu, Sichuan 610041, P.R. China, E-mail: , E-mail:
| | - Cheng Peng
- State Key Laboratory of Southwestern Chinese Medicine Resources, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, Sichuan 611137, P.R. China
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4
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Abstract
Proteins have dynamic structures that undergo chain motions on time scales spanning from picoseconds to seconds. Resolving the resultant conformational heterogeneity is essential for gaining accurate insight into fundamental mechanistic aspects of the protein folding reaction. The use of high-resolution structural probes, sensitive to population distributions, has begun to enable the resolution of site-specific conformational heterogeneity at different stages of the folding reaction. Different states populated during protein folding, including the unfolded state, collapsed intermediate states, and even the native state, are found to possess significant conformational heterogeneity. Heterogeneity in protein folding and unfolding reactions originates from the reduced cooperativity of various kinds of physicochemical interactions between various structural elements of a protein, and between a protein and solvent. Heterogeneity may arise because of functional or evolutionary constraints. Conformational substates within the unfolded state and the collapsed intermediates that exchange at rates slower than the subsequent folding steps give rise to heterogeneity on the protein folding pathways. Multiple folding pathways are likely to represent distinct sequences of structure formation. Insight into the nature of the energy barriers separating different conformational states populated during (un)folding can also be obtained by resolving heterogeneity.
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Affiliation(s)
- Sandhya Bhatia
- National Centre for Biological Sciences, Tata Institute of Fundamental Research, Bengaluru 560065, India.,Indian Institute of Science Education and Research, Pune 411008, India
| | - Jayant B Udgaonkar
- National Centre for Biological Sciences, Tata Institute of Fundamental Research, Bengaluru 560065, India.,Indian Institute of Science Education and Research, Pune 411008, India
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5
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Sebák F, Ecsédi P, Bermel W, Luy B, Nyitray L, Bodor A. Selective
1
H
α
NMR Methods Reveal Functionally Relevant Proline
cis/trans
Isomers in Intrinsically Disordered Proteins: Characterization of Minor Forms, Effects of Phosphorylation, and Occurrence in Proteome. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202108361] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Fanni Sebák
- Eötvös Loránd University Institute of Chemistry Pázmány Péter s. 1/a 1117 Budapest Hungary
- Semmelweis University Doctoral School of Pharmaceutical Sciences Üllői út 26 1085 Budapest Hungary
| | - Péter Ecsédi
- Eötvös Loránd University Department of Biochemistry Pázmány Péter s. 1/c 1117 Budapest Hungary
| | - Wolfgang Bermel
- Bruker BioSpin GmbH Silberstreifen 4 76287 Rheinstetten Germany
| | - Burkhard Luy
- KIT-Institut für Organische Chemie IBG4—Magnetische Resonanz Fritz-Haber-Weg 6 76131 Karlsruhe Germany
| | - László Nyitray
- Eötvös Loránd University Department of Biochemistry Pázmány Péter s. 1/c 1117 Budapest Hungary
| | - Andrea Bodor
- Eötvös Loránd University Institute of Chemistry Pázmány Péter s. 1/a 1117 Budapest Hungary
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6
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Delmas O. Cyclophilin B is really a major growth factor in breast milk. J Biol Chem 2022; 298:101481. [PMID: 35032767 PMCID: PMC8761685 DOI: 10.1016/j.jbc.2021.101481] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2021] [Accepted: 07/13/2021] [Indexed: 11/19/2022] Open
Affiliation(s)
- Olivier Delmas
- Institut National de l'Environnement Industriel et des Risques (INERIS), Verneuil en Halatte, France.
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7
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Sebák F, Ecsédi P, Bermel W, Luy B, Nyitray L, Bodor A. Selective 1 H α NMR Methods Reveal Functionally Relevant Proline cis/trans Isomers in Intrinsically Disordered Proteins: Characterization of Minor Forms, Effects of Phosphorylation, and Occurrence in Proteome. Angew Chem Int Ed Engl 2021; 61:e202108361. [PMID: 34585830 PMCID: PMC9299183 DOI: 10.1002/anie.202108361] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2021] [Revised: 09/21/2021] [Indexed: 11/30/2022]
Abstract
It is important to identify proline cis/trans isomers that appear in several regulatory mechanisms of proteins, and to characterize minor species that are present due to the conformational heterogeneity in intrinsically disordered proteins (IDPs). To obtain residue level information on these mobile systems we introduce two 1Hα‐detected, proline selective, real‐time homodecoupled NMR experiments and analyze the proline abundant transactivation domain of p53. The measurements are sensitive enough to identify minor conformers present in 4–15 % amounts; moreover, we show the consequences of CK2 phosphorylation on the cis/trans‐proline equilibrium. Using our results and available literature data we perform a statistical analysis on how the amino acid type effects the cis/trans‐proline distribution. The methods are applicable under physiological conditions, they can contribute to find key proline isomers in proteins, and statistical analysis results may help in amino acid sequence optimization for biotechnological purposes.
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Affiliation(s)
- Fanni Sebák
- Eötvös Loránd University, Institute of Chemistry, Pázmány Péter s. 1/a, 1117, Budapest, Hungary.,Semmelweis University, Doctoral School of Pharmaceutical Sciences, Üllői út 26, 1085, Budapest, Hungary
| | - Péter Ecsédi
- Eötvös Loránd University, Department of Biochemistry, Pázmány Péter s. 1/c, 1117, Budapest, Hungary
| | - Wolfgang Bermel
- Bruker BioSpin GmbH, Silberstreifen 4, 76287, Rheinstetten, Germany
| | - Burkhard Luy
- KIT-Institut für Organische Chemie, IBG4-Magnetische Resonanz, Fritz-Haber-Weg 6, 76131, Karlsruhe, Germany
| | - László Nyitray
- Eötvös Loránd University, Department of Biochemistry, Pázmány Péter s. 1/c, 1117, Budapest, Hungary
| | - Andrea Bodor
- Eötvös Loránd University, Institute of Chemistry, Pázmány Péter s. 1/a, 1117, Budapest, Hungary
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8
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Canovas B, Nebreda AR. Diversity and versatility of p38 kinase signalling in health and disease. Nat Rev Mol Cell Biol 2021; 22:346-366. [PMID: 33504982 PMCID: PMC7838852 DOI: 10.1038/s41580-020-00322-w] [Citation(s) in RCA: 234] [Impact Index Per Article: 78.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/02/2020] [Indexed: 02/06/2023]
Abstract
The ability of cells to deal with different types of stressful situations in a precise and coordinated manner is key for survival and involves various signalling networks. Over the past 25 years, p38 kinases — in particular, p38α — have been implicated in the cellular response to stress at many levels. These span from environmental and intracellular stresses, such as hyperosmolarity, oxidative stress or DNA damage, to physiological situations that involve important cellular changes such as differentiation. Given that p38α controls a plethora of functions, dysregulation of this pathway has been linked to diseases such as inflammation, immune disorders or cancer, suggesting the possibility that targeting p38α could be of therapeutic interest. In this Review, we discuss the organization of this signalling pathway focusing on the diversity of p38α substrates, their mechanisms and their links to particular cellular functions. We then address how the different cellular responses can be generated depending on the signal received and the cell type, and highlight the roles of this kinase in human physiology and in pathological contexts. p38α — the best-characterized member of the p38 kinase family — is a key mediator of cellular stress responses. p38α is activated by a plethora of signals and functions through a multitude of substrates to regulate different cellular behaviours. Understanding context-dependent p38α signalling provides important insights into p38α roles in physiology and pathology.
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Affiliation(s)
- Begoña Canovas
- Institute for Research in Biomedicine (IRB Barcelona), The Barcelona Institute of Science and Technology, Barcelona, Spain
| | - Angel R Nebreda
- Institute for Research in Biomedicine (IRB Barcelona), The Barcelona Institute of Science and Technology, Barcelona, Spain. .,ICREA, Barcelona, Spain.
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9
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Abstract
Malignant transformation entails important changes in the control of cell proliferation through the rewiring of selected signaling pathways. Cancer cells then become very dependent on the proper function of those pathways, and their inhibition offers therapeutic opportunities. Here we identify the stress kinase p38α as a nononcogenic signaling molecule that enables the progression of KrasG12V-driven lung cancer. We demonstrate in vivo that, despite acting as a tumor suppressor in healthy alveolar progenitor cells, p38α contributes to the proliferation and malignization of lung cancer epithelial cells. We show that high expression levels of p38α correlate with poor survival in lung adenocarcinoma patients, and that genetic or chemical inhibition of p38α halts tumor growth in lung cancer mouse models. Moreover, we reveal a lung cancer epithelial cell-autonomous function for p38α promoting the expression of TIMP-1, which in turn stimulates cell proliferation in an autocrine manner. Altogether, our results suggest that epithelial p38α promotes KrasG12V-driven lung cancer progression via maintenance of cellular self-growth stimulatory signals.
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10
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Kuo J, Bobardt M, Chatterji U, Mayo PR, Trepanier DJ, Foster RT, Gallay P, Ure DR. A Pan-Cyclophilin Inhibitor, CRV431, Decreases Fibrosis and Tumor Development in Chronic Liver Disease Models. J Pharmacol Exp Ther 2019; 371:231-241. [PMID: 31406003 PMCID: PMC6815936 DOI: 10.1124/jpet.119.261099] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2019] [Accepted: 08/01/2019] [Indexed: 12/14/2022] Open
Abstract
Previous studies show that cyclophilins contribute to many pathologic processes, and cyclophilin inhibitors demonstrate therapeutic activities in many experimental models. However, no drug with cyclophilin inhibition as the primary mode of action has advanced completely through clinical development to market. In this study, we present findings on the cyclophilin inhibitor, CRV431, that highlight its potential as a drug candidate for chronic liver diseases. CRV431 was found to potently inhibit all cyclophilin isoforms tested—A, B, D, and G. Inhibitory constant or IC50 values ranged from 1 to 7 nM, which was up to 13 times more potent than the parent compound, cyclosporine A (CsA), from which CRV431 was derived. Other CRV431 advantages over CsA as a nontransplant drug candidate were significantly diminished immunosuppressive activity, less drug transporter inhibition, and reduced cytotoxicity potential. Oral dosing to mice and rats led to good blood exposures and a 5- to 15-fold accumulation of CRV431 in liver compared with blood concentrations across a wide range of CRV431 dosing levels. Most importantly, CRV431 decreased liver fibrosis in a 6-week carbon tetrachloride model and in a mouse model of nonalcoholic steatohepatitis (NASH). Additionally, CRV431 administration during a late, oncogenic stage of the NASH disease model resulted in a 50% reduction in the number and size of liver tumors. These findings are consistent with CRV431 targeting fibrosis and cancer through multiple, cyclophilin-mediated mechanisms and support the development of CRV431 as a safe and effective drug candidate for liver diseases.
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Affiliation(s)
- Joseph Kuo
- Department of Immunology and Microbiology, Scripps Research Institute, La Jolla, California (J.K., M.B., U.C., P.G.); and Hepion Pharmaceuticals, Edison, New Jersey (P.R.M., D.J.T., R.T.F., D.R.U.)
| | - Michael Bobardt
- Department of Immunology and Microbiology, Scripps Research Institute, La Jolla, California (J.K., M.B., U.C., P.G.); and Hepion Pharmaceuticals, Edison, New Jersey (P.R.M., D.J.T., R.T.F., D.R.U.)
| | - Udayan Chatterji
- Department of Immunology and Microbiology, Scripps Research Institute, La Jolla, California (J.K., M.B., U.C., P.G.); and Hepion Pharmaceuticals, Edison, New Jersey (P.R.M., D.J.T., R.T.F., D.R.U.)
| | - Patrick R Mayo
- Department of Immunology and Microbiology, Scripps Research Institute, La Jolla, California (J.K., M.B., U.C., P.G.); and Hepion Pharmaceuticals, Edison, New Jersey (P.R.M., D.J.T., R.T.F., D.R.U.)
| | - Daniel J Trepanier
- Department of Immunology and Microbiology, Scripps Research Institute, La Jolla, California (J.K., M.B., U.C., P.G.); and Hepion Pharmaceuticals, Edison, New Jersey (P.R.M., D.J.T., R.T.F., D.R.U.)
| | - Robert T Foster
- Department of Immunology and Microbiology, Scripps Research Institute, La Jolla, California (J.K., M.B., U.C., P.G.); and Hepion Pharmaceuticals, Edison, New Jersey (P.R.M., D.J.T., R.T.F., D.R.U.)
| | - Philippe Gallay
- Department of Immunology and Microbiology, Scripps Research Institute, La Jolla, California (J.K., M.B., U.C., P.G.); and Hepion Pharmaceuticals, Edison, New Jersey (P.R.M., D.J.T., R.T.F., D.R.U.)
| | - Daren R Ure
- Department of Immunology and Microbiology, Scripps Research Institute, La Jolla, California (J.K., M.B., U.C., P.G.); and Hepion Pharmaceuticals, Edison, New Jersey (P.R.M., D.J.T., R.T.F., D.R.U.)
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11
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Tang F, Wang H, Chen E, Bian E, Xu Y, Ji X, Yang Z, Hua X, Zhang Y, Zhao B. LncRNA-ATB promotes TGF-β-induced glioma cells invasion through NF-κB and P38/MAPK pathway. J Cell Physiol 2019; 234:23302-23314. [PMID: 31140621 DOI: 10.1002/jcp.28898] [Citation(s) in RCA: 55] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2019] [Revised: 05/12/2019] [Accepted: 05/14/2019] [Indexed: 12/14/2022]
Abstract
Glioma constitutes the most aggressive primary intracranial malignancy in adults. We previously showed that long noncoding RNA activated by TGF-β (lncRNA-ATB) promoted the glioma cells invasion. However, whether lncRNA-ATB is involved in TGF-β-mediated invasion of glioma cells remains unknown. In this study, quantitative real-time polymerase chain reaction and western blot analysis were used for detecting the mRNA and protein expression of related genes, respectively. Transwell assay was performed to assess the impact of lncRNA-ATB on TGF-β-induced glioma cells migration and invasion. Immunofluorescence staining was utilized to characterize related protein distribution. Results showed that TGF-β upregulated lncRNA-ATB expression in glioma LN-18 and U251 cells. Overexpression of lncRNA-ATB activated nuclear factor-κB (NF-κB) pathway and promoted P65 translocation into the nucleus, thus facilitated glioma cells invasion stimulated by TGF-β. Similarly, lncRNA-ATB markedly enhanced TGF-β-mediated invasion of glioma cells through activation P38 mitogen-activated protein kinase (P38/MAPK) pathway. Moreover, both the NF-κB selected inhibitor pyrrolidinedithiocarbamate ammonium and P38/MAPK specific inhibitor SB203580 partly reversed lncRNA-ATB induced glioma cells invasion mediated by TGF-β. Collectively, this study revealed that lncRNA-ATB promotes TGF-β-induced glioma cell invasion through NF-κB and P38/MAPK pathway and established a detailed framework for understanding the way how lncRNA-ATB performs its function in TGF-β-mediated glioma invasion.
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Affiliation(s)
- Feng Tang
- Department of Neurosurgery, The Second Affiliated Hospital of Anhui Medical University, Hefei, Anuhi, China.,Cerebral Vascular Disease Research Center, Anhui Medical University, Hefei, China
| | - Hongliang Wang
- Department of Neurosurgery, The Second Affiliated Hospital of Anhui Medical University, Hefei, Anuhi, China.,Cerebral Vascular Disease Research Center, Anhui Medical University, Hefei, China
| | - Erfeng Chen
- Department of Neurosurgery, The Second Affiliated Hospital of Anhui Medical University, Hefei, Anuhi, China.,Cerebral Vascular Disease Research Center, Anhui Medical University, Hefei, China
| | - Erbao Bian
- Department of Neurosurgery, The Second Affiliated Hospital of Anhui Medical University, Hefei, Anuhi, China.,Cerebral Vascular Disease Research Center, Anhui Medical University, Hefei, China
| | - Yadi Xu
- Department of Neurosurgery, The Second Affiliated Hospital of Anhui Medical University, Hefei, Anuhi, China.,Cerebral Vascular Disease Research Center, Anhui Medical University, Hefei, China
| | - Xinghu Ji
- Department of Neurosurgery, The Second Affiliated Hospital of Anhui Medical University, Hefei, Anuhi, China.,Cerebral Vascular Disease Research Center, Anhui Medical University, Hefei, China
| | - Zhihao Yang
- Department of Neurosurgery, The Second Affiliated Hospital of Anhui Medical University, Hefei, Anuhi, China.,Cerebral Vascular Disease Research Center, Anhui Medical University, Hefei, China
| | - Xiangyang Hua
- Department of Neurosurgery, The Second Affiliated Hospital of Anhui Medical University, Hefei, Anuhi, China.,Cerebral Vascular Disease Research Center, Anhui Medical University, Hefei, China
| | - Yile Zhang
- Department of Neurosurgery, The Second Affiliated Hospital of Anhui Medical University, Hefei, Anuhi, China.,Cerebral Vascular Disease Research Center, Anhui Medical University, Hefei, China
| | - Bing Zhao
- Department of Neurosurgery, The Second Affiliated Hospital of Anhui Medical University, Hefei, Anuhi, China.,Cerebral Vascular Disease Research Center, Anhui Medical University, Hefei, China
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12
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Connexin43 dephosphorylation at serine 282 is associated with connexin43-mediated cardiomyocyte apoptosis. Cell Death Differ 2019; 26:1332-1345. [PMID: 30770876 DOI: 10.1038/s41418-019-0277-x] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2018] [Revised: 01/02/2019] [Accepted: 01/04/2019] [Indexed: 02/06/2023] Open
Abstract
Gap junction protein connexin 43 (Cx43) plays an important role in regulating cardiomyocyte survival in addition to regulating electrical coordination. Cx43 dephosphorylation, found in severe cardiac pathologies, is thought to contribute to myocardial injury. However, the mechanisms underlying Cx43 mediation of cell survival and myocardial lesions remain unknown. Here, we found that transfecting an adenovirus carrying a mutant gene of Cx43-serine 282 substituted with alanine (S282A) into neonatal rat ventricular myocytes (NRVMs) induced cell apoptosis and Ca2+ transient desynchronization, whereas using gap junction inhibitor or knocking down Cx43 expression with Cx43-miRNA caused uncoupled Ca2+ signaling without cell death. Similarly, while Cx43-S282A+/+ failed in generation, Cx43-S282A+/- mice exhibited cardiomyocyte apoptosis and ventricular arrhythmias dependent on S282 dephosphorylation. Further, Cx43 dephosphorylation at S282 activated p38 mitogen-activated protein kinase (p38 MAPK), factor-associated suicide and the caspase-8 apoptotic pathway by physically interacting with p38 MAPK. These findings uncovered a specific Cx43 phosphorylation residue involved in regulating cardiomyocyte homeostasis. S282 phosphorylation deficiency acts as a trigger inducing cardiomyocyte apoptosis and cardiac arrhythmias, providing a potential mechanism for Cx43-mediated myocardial injury in severe cardiac diseases.
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13
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Zwiewka M, Bilanovičová V, Seifu YW, Nodzyński T. The Nuts and Bolts of PIN Auxin Efflux Carriers. FRONTIERS IN PLANT SCIENCE 2019; 10:985. [PMID: 31417597 PMCID: PMC6685051 DOI: 10.3389/fpls.2019.00985] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/01/2019] [Accepted: 07/12/2019] [Indexed: 05/20/2023]
Abstract
The plant-specific proteins named PIN-FORMED (PIN) efflux carriers facilitate the direction of auxin flow and thus play a vital role in the establishment of local auxin maxima within plant tissues that subsequently guide plant ontogenesis. They are membrane integral proteins with two hydrophobic regions consisting of alpha-helices linked with a hydrophilic loop, which is usually longer for the plasma membrane-localized PINs. The hydrophilic loop harbors molecular cues important for the subcellular localization and thus auxin efflux function of those transporters. The three-dimensional structure of PIN has not been solved yet. However, there are scattered but substantial data concerning the functional characterization of amino acid strings that constitute these carriers. These sequences include motifs vital for vesicular trafficking, residues regulating membrane diffusion, cellular polar localization, and activity of PINs. Here, we summarize those bits of information striving to provide a reference to structural motifs that have been investigated experimentally hoping to stimulate the efforts toward unraveling of PIN structure-function connections.
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Dilworth D, Gudavicius G, Xu X, Boyce AKJ, O’Sullivan C, Serpa JJ, Bilenky M, Petrochenko EV, Borchers CH, Hirst M, Swayne LA, Howard P, Nelson CJ. The prolyl isomerase FKBP25 regulates microtubule polymerization impacting cell cycle progression and genomic stability. Nucleic Acids Res 2018; 46:2459-2478. [PMID: 29361176 PMCID: PMC5861405 DOI: 10.1093/nar/gky008] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2017] [Revised: 12/14/2017] [Accepted: 01/12/2018] [Indexed: 12/25/2022] Open
Abstract
FK506 binding proteins (FKBPs) catalyze the interconversion of cis-trans proline conformers in proteins. Importantly, FK506 drugs have anti-cancer and neuroprotective properties, but the effectors and mechanisms underpinning these properties are not well understood because the cellular function(s) of most FKBP proteins are unclear. FKBP25 is a nuclear prolyl isomerase that interacts directly with nucleic acids and is associated with several DNA/RNA binding proteins. Here, we show the catalytic FKBP domain binds microtubules (MTs) directly to promote their polymerization and stabilize the MT network. Furthermore, FKBP25 associates with the mitotic spindle and regulates entry into mitosis. This interaction is important for mitotic spindle dynamics, as we observe increased chromosome instability in FKBP25 knockdown cells. Finally, we provide evidence that FKBP25 association with chromatin is cell-cycle regulated by Protein Kinase C phosphorylation. This disrupts FKBP25-DNA contacts during mitosis while maintaining its interaction with the spindle apparatus. Collectively, these data support a model where FKBP25 association with chromatin and MTs is carefully choreographed to ensure faithful genome duplication. Additionally, they highlight that FKBP25 is a MT-associated FK506 receptor and potential therapeutic target in MT-associated diseases.
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Affiliation(s)
- David Dilworth
- Department of Biochemistry and Microbiology, University of Victoria, Victoria, BC, V8W 3P6, Canada
| | - Geoff Gudavicius
- Department of Biochemistry and Microbiology, University of Victoria, Victoria, BC, V8W 3P6, Canada
| | - Xiaoxue Xu
- Division of Medical Sciences and Island Medical Program, University of Victoria, Victoria V8P 5C2, Canada
| | - Andrew K J Boyce
- Division of Medical Sciences and Island Medical Program, University of Victoria, Victoria V8P 5C2, Canada
| | - Connor O’Sullivan
- Department of Biochemistry and Microbiology, University of Victoria, Victoria, BC, V8W 3P6, Canada
| | - Jason J Serpa
- University of Victoria Genome BC Proteomics Centre, Vancouver Island Technology Park, Victoria, BC, V8Z 7X8, Canada
| | - Misha Bilenky
- BC Cancer Agency Genome Sciences Centre and the Department of Microbiology & Immunology, Michael Smith Laboratories, University of British Columbia, Vancouver, BC, V6T 1Z3, Canada
| | - Evgeniy V Petrochenko
- University of Victoria Genome BC Proteomics Centre, Vancouver Island Technology Park, Victoria, BC, V8Z 7X8, Canada
| | - Christoph H Borchers
- University of Victoria Genome BC Proteomics Centre, Vancouver Island Technology Park, Victoria, BC, V8Z 7X8, Canada
| | - Martin Hirst
- BC Cancer Agency Genome Sciences Centre and the Department of Microbiology & Immunology, Michael Smith Laboratories, University of British Columbia, Vancouver, BC, V6T 1Z3, Canada
| | - Leigh Anne Swayne
- Division of Medical Sciences and Island Medical Program, University of Victoria, Victoria V8P 5C2, Canada
- Department of Cellular and Physiological Sciences, University of British Columbia, Vancouver V6T 1Z3, Canada
| | - Perry Howard
- Department of Biochemistry and Microbiology, University of Victoria, Victoria, BC, V8W 3P6, Canada
| | - Christopher J Nelson
- Department of Biochemistry and Microbiology, University of Victoria, Victoria, BC, V8W 3P6, Canada
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Zhang Y, Feng Z, Wang W, Dong J, Gong X, Pu H, Chen X. Expression of Heat Shock Protein-27 (Hsp27) and P38MAPK in Esophageal Squamous Cell Carcinoma. Med Sci Monit 2017; 23:5246-5253. [PMID: 29099815 PMCID: PMC5683682 DOI: 10.12659/msm.904912] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Background Esophageal squamous cell carcinoma (ESCC) is a worldwide concern. This study looked at the relationship between the expression of differential proteins and the clinicopathological data and survival rate of ESCC patients to identify potential tumor markers for the growth and metastasis of ESCC. Material/Methods This study included 162 patients who underwent surgical excision for management of ESCC. Fresh ESCC tissue and adjacent normal tissue specimens were collected. Protein expressions were detected by western blotting. The expression of Hsp27 and P38MAPK were detected by immunohistochemistry in formalin-fixed paraffin embedded primary tissue specimens. Results The rate of positive Hsp27 and P38MAPK expression in ESCC tissue were higher than in normal esophageal tissue (p<0.05). The expression of P38MAPK was related to the depth of infiltration (p<0.05). The expression of Hsp27 was correlated with lymph node metastasis (p<0.05), but not with age, depth of infiltration, or tumor size. ROC were plotted to estimate the significance of the diagnosis: for Hsp27, AUC=0.735 (p<0.05), for P38MAPK, AUC=0.882 (p<0.05). Conclusions The expression of Hsp27 and P38MAPK plays a role in ESCC development. Hsp27 and P38MAPK could be used as prognostic factors in ESCC.
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Affiliation(s)
- Yan Zhang
- Department of Pathology, College of Basic Medical Sciences, Xinjiang Medical University, Urumqi, Xinjiang, China (mainland)
| | - Zhiyin Feng
- Department of Pathology, College of Basic Medical Sciences, Xinjiang Medical University, Urumqi, Xinjiang, China (mainland)
| | - Weina Wang
- Department of Pathology, The Third Affiliated hospital of Xinjiang Medical University, Urumqi, Xinjiang, China (mainland)
| | - Juanjuan Dong
- Department of Public Health, Xinjiang Medical University, Urumqi, Xinjiang, China (mainland)
| | - Xiaojin Gong
- Department of Pathology, The Second Affiliated Hospital of Xinjiang Medical University, Urumqi, Xinjiang, China (mainland)
| | - Hongwei Pu
- Department of Science and Research Education Center, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, Xinjiang, China (mainland)
| | - Xiao Chen
- Department of Pathology, College of Basic Medical Sciences, Xinjiang Medical University, Urumqi, Xinjiang, China (mainland)
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Affiliation(s)
- Anna Brichkina
- Institute of Molecular Oncology, Philipps University, Marburg, Germany
| | - Dmitry V Bulavin
- Institute for Research on Cancer and Aging of Nice (IRCAN), INSERM, U1081-UMR CNRS 7284, University of Nice-Sophia Antipolis, Centre Antoine Lacassagne, Nice, France
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Abstract
To generate new hypotheses, sometimes a "systems" approach is needed. In this review, I focus on the mitogen-activated kinase p38 because it has been recently shown to play an important role in the developmental programing and senescence of normal and stressed reproductive tissues. What follows is an overview of (i) pathways of p38 activation and their involvement in basic biological processes, (ii) evidence that p38 is involved in the homeostasis of reproductive tissues, (iii) how focus on p38 can be incorporated into investigation of normal and stressed pregnancies. Existence of excellent reviews will be mentioned as well as relevant animal models.
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Affiliation(s)
- Elizabeth A Bonney
- Department of Obstetrics, Gynecology and Reproductive Sciences, University of Vermont, Burlington, VT, USA
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Musich PR, Li Z, Zou Y. Xeroderma Pigmentosa Group A (XPA), Nucleotide Excision Repair and Regulation by ATR in Response to Ultraviolet Irradiation. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2017; 996:41-54. [PMID: 29124689 DOI: 10.1007/978-3-319-56017-5_4] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
The sensitivity of Xeroderma pigmentosa (XP) patients to sunlight has spurred the discovery and genetic and biochemical analysis of the eight XP gene products (XPA-XPG plus XPV) responsible for this disorder. These studies also have served to elucidate the nucleotide excision repair (NER) process, especially the critical role played by the XPA protein. More recent studies have shown that NER also involves numerous other proteins normally employed in DNA metabolism and cell cycle regulation. Central among these is ataxia telangiectasia and Rad3-related (ATR), a protein kinase involved in intracellular signaling in response to DNA damage, especially DNA damage-induced replicative stresses. This review summarizes recent findings on the interplay between ATR as a DNA damage signaling kinase and as a novel ligand for intrinsic cell death proteins to delay damage-induced apoptosis, and on ATR's regulation of XPA and the NER process for repair of UV-induced DNA adducts. ATR's regulatory role in the cytosolic-to-nuclear translocation of XPA will be discussed. In addition, recent findings elucidating a non-NER role for XPA in DNA metabolism and genome stabilization at ds-ssDNA junctions, as exemplified in prematurely aging progeroid cells, also will be reviewed.
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Affiliation(s)
- Phillip R Musich
- Department of Biomedical Sciences, Quillen College of Medicine, East Tennessee State University, Johnson City, TN, 37614, USA
| | - Zhengke Li
- Department of Cancer Genetics and Epigenetics, City of Hope Comprehensive Cancer Center, 1500 E Duarte Rd, Duarte, CA, 91007, USA
| | - Yue Zou
- Department of Biomedical Sciences, Quillen College of Medicine, East Tennessee State University, Johnson City, TN, 37614, USA.
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