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Yang F, Li WB, Qu YW, Gao JX, Tang YS, Wang DJ, Pan YJ. Bone marrow mesenchymal stem cells induce M2 microglia polarization through PDGF-AA/MANF signaling. World J Stem Cells 2020; 12:633-658. [PMID: 32843919 PMCID: PMC7415242 DOI: 10.4252/wjsc.v12.i7.633] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/20/2020] [Revised: 04/04/2020] [Accepted: 05/17/2020] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND Bone marrow mesenchymal stem cells (BMSCs) are capable of shifting the microglia/macrophages phenotype from M1 to M2, contributing to BMSCs-induced brain repair. However, the regulatory mechanism of BMSCs on microglia/macrophages after ischemic stroke is unclear. Recent evidence suggests that mesencephalic astrocyte–derived neurotrophic factor (MANF) and platelet-derived growth factor-AA (PDGF-AA)/MANF signaling regulate M1/M2 macrophage polarization.
AIM To investigate whether and how MANF or PDGF-AA/MANF signaling influences BMSCs-mediated M2 polarization.
METHODS We identified the secretion of MANF by BMSCs and developed transgenic BMSCs using a targeting small interfering RNA for knockdown of MANF expression. Using a rat middle cerebral artery occlusion (MCAO) model transplanted by BMSCs and BMSCs–microglia Transwell coculture system, the effect of BMSCs-induced downregulation of MANF expression on the phenotype of microglia/macrophages was tested by Western blot, quantitative reverse transcription-polymerase chain reaction, and immunofluorescence. Additionally, microglia were transfected with mimics of miR-30a*, which influenced expression of X-box binding protein (XBP) 1, a key transcription factor that synergized with activating transcription factor 6 (ATF6) to govern MANF expression. We examined the levels of miR-30a*, ATF6, XBP1, and MANF after PDGF-AA treatment in the activated microglia.
RESULTS Inhibition of MANF attenuated BMSCs-induced functional recovery and decreased M2 marker production, but increased M1 marker expression in vivo or in vitro. Furthermore, PDGF-AA treatment decreased miR-30a* expression, had no influence on the levels of ATF6, but enhanced expression of both XBP1 and MANF.
CONCLUSION BMSCs-mediated MANF paracrine signaling, in particular the PDGF-AA/miR-30a*/XBP1/MANF pathway, synergistically mediates BMSCs-induced M2 polarization.
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Affiliation(s)
- Fan Yang
- Department of Neurology, The First Clinical College of Harbin Medical University, Harbin 150001, Heilongjiang Province, China
| | - Wen-Bin Li
- Department of Neurology, The First Clinical College of Harbin Medical University, Harbin 150001, Heilongjiang Province, China
| | - Ye-Wei Qu
- Department of Neurology, The First Clinical College of Harbin Medical University, Harbin 150001, Heilongjiang Province, China
| | - Jin-Xing Gao
- Department of Neurology, The First Clinical College of Harbin Medical University, Harbin 150001, Heilongjiang Province, China
| | - Yu-Shi Tang
- Department of Neurology, The First Clinical College of Harbin Medical University, Harbin 150001, Heilongjiang Province, China
| | - Dong-Jie Wang
- Department of Respiratory Medicine, The First Clinical College of Harbin Medical University, Harbin 150001, Heilongjiang Province, China
| | - Yu-Jun Pan
- Department of Neurology, The First Clinical College of Harbin Medical University, Harbin 150001, Heilongjiang Province, China
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52
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Role of Mesencephalic Astrocyte-Derived Neurotrophic Factor in Alcohol-Induced Liver Injury. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2020; 2020:9034864. [PMID: 32724497 PMCID: PMC7364207 DOI: 10.1155/2020/9034864] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/19/2020] [Accepted: 05/29/2020] [Indexed: 12/20/2022]
Abstract
Consumption of alcohol in immoderate quantity induces endoplasmic reticulum (ER) stress response (alcohol-induced ER stress). Mesencephalic astrocyte-derived neurotrophic factor (MANF), an ER stress-inducible protein, works as an evolutionarily conserved regulator of systemic and liver metabolic homeostasis. In this study, the effects of MANF on alcohol-induced liver injury were explored by using hepatocyte-specific MANF-knockout mice (MANF ΔHep) in a chronic-plus-binge alcohol feeding model. We found that alcohol feeding upregulated MANF expression and MANF ΔHep mice exhibited more severe liver injury with extra activated ER stress after alcohol feeding. In addition, we found that MANF deficiency activated iNOS and p65 and increased the production of NO and anti-inflammatory cytokines, which was further enhanced after alcohol treatment. Meanwhile, MANF deletion upregulated the levels of CYP2E1, 4-HNE, and MDA and downregulated the levels of GSH and SOD. These results indicate that MANF has potential protection on alcohol-induced liver injury, and the underlying mechanisms may be associated with meliorating the overactivated ER stress triggered by inflammation and oxidative stress via inhibiting and reducing NO/NF-κB and CYP2E1/ROS, respectively. Therefore, MANF might be a negative regulator in alcohol-induced ER stress and participate in the crosstalk between the NF-κB pathway and oxidative stress in the liver. Conclusions. This study identifies a specific role of MANF in alcohol-induced liver injury, which may provide a new approach for the treatment of ALI.
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Liu J, Wu Z, Han D, Wei C, Liang Y, Jiang T, Chen L, Sha M, Cao Y, Huang F, Geng X, Yu J, Shen Y, Wang H, Feng L, Wang D, Fang S, Wang S, Shen Y. Mesencephalic Astrocyte-Derived Neurotrophic Factor Inhibits Liver Cancer Through Small Ubiquitin-Related Modifier (SUMO)ylation-Related Suppression of NF-κB/Snail Signaling Pathway and Epithelial-Mesenchymal Transition. Hepatology 2020; 71:1262-1278. [PMID: 31469428 PMCID: PMC7187412 DOI: 10.1002/hep.30917] [Citation(s) in RCA: 86] [Impact Index Per Article: 21.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/16/2019] [Accepted: 08/22/2019] [Indexed: 12/25/2022]
Abstract
BACKGROUND AND AIMS Endoplasmic reticulum (ER) stress is associated with liver inflammation and hepatocellular carcinoma (HCC). However, how ER stress links inflammation and HCC remains obscure. Mesencephalic astrocyte-derived neurotrophic factor (MANF) is an ER stress-inducible secretion protein that inhibits inflammation by interacting with the key subunit of nuclear factor kappa light chain enhancer of activated B cells (NF-κB) p65. We hypothesized that MANF may play a key role in linking ER stress and inflammation in HCC. APPROACH AND RESULTS Here, we found that MANF mRNA and protein levels were lower in HCC tissues versus adjacent noncancer tissues. Patients with high levels of MANF had better relapse-free survival and overall survival rates than those with low levels. MANF levels were also associated with the status of liver cirrhosis, advanced tumor-node-metastasis (TNM) stage, and tumor size. In vitro experiments revealed that MANF suppressed the migration and invasion of hepatoma cells. Hepatocyte-specific deletion of MANF accelerated N-nitrosodiethylamine (DEN)-induced HCC by up-regulating Snail1+2 levels and promoting epithelial-mesenchymal transition (EMT). MANF appeared in the nuclei and was colocalized with p65 in HCC tissues and in tumor necrosis factor alpha (TNF-α)-treated hepatoma cells. The interaction of p65 and MANF was also confirmed by coimmunoprecipitation experiments. Consistently, knockdown of MANF up-regulated NF-κB downstream target genes TNF-α, interleukin (IL)-6 and IL-1α expression in vitro and in vivo. Finally, small ubiquitin-related modifier 1 (SUMO1) promoted MANF nuclear translocation and enhanced the interaction of MANF and p65. Mutation of p65 motifs for SUMOylation abolished the interaction of p65 and MANF. CONCLUSIONS MANF plays an important role in linking ER stress and liver inflammation by inhibiting the NF-κB/Snail signal pathway in EMT and HCC progression. Therefore, MANF may be a cancer suppressor and a potential therapeutic target for HCC.
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Affiliation(s)
- Jun Liu
- School of Basic Medical SciencesAnhui Medical UniversityHefeiChina,Biopharmaceutical Research InstituteAnhui Medical UniversityHefeiChina
| | - Zhengsheng Wu
- School of Basic Medical SciencesAnhui Medical UniversityHefeiChina
| | - Dan Han
- School of Basic Medical SciencesAnhui Medical UniversityHefeiChina,Biopharmaceutical Research InstituteAnhui Medical UniversityHefeiChina
| | - Chuansheng Wei
- School of Basic Medical SciencesAnhui Medical UniversityHefeiChina,Biopharmaceutical Research InstituteAnhui Medical UniversityHefeiChina
| | - Yanyan Liang
- School of Basic Medical SciencesAnhui Medical UniversityHefeiChina,Biopharmaceutical Research InstituteAnhui Medical UniversityHefeiChina
| | - Tongcui Jiang
- School of Basic Medical SciencesAnhui Medical UniversityHefeiChina,Biopharmaceutical Research InstituteAnhui Medical UniversityHefeiChina
| | - Lu Chen
- Biopharmaceutical Research InstituteAnhui Medical UniversityHefeiChina
| | - Manqi Sha
- Biopharmaceutical Research InstituteAnhui Medical UniversityHefeiChina
| | - Yajie Cao
- Biopharmaceutical Research InstituteAnhui Medical UniversityHefeiChina
| | - Fan Huang
- The First Affiliated Hospital of Anhui Medical UniversityHefeiChina
| | - Xiaoping Geng
- The First Affiliated Hospital of Anhui Medical UniversityHefeiChina
| | - Jishuang Yu
- Biopharmaceutical Research InstituteAnhui Medical UniversityHefeiChina
| | - Yujun Shen
- School of Basic Medical SciencesAnhui Medical UniversityHefeiChina,Biopharmaceutical Research InstituteAnhui Medical UniversityHefeiChina
| | - Hua Wang
- The First Affiliated Hospital of Anhui Medical UniversityHefeiChina
| | - Lijie Feng
- School of Basic Medical SciencesAnhui Medical UniversityHefeiChina,Biopharmaceutical Research InstituteAnhui Medical UniversityHefeiChina
| | - Dong Wang
- School of Basic Medical SciencesAnhui Medical UniversityHefeiChina,Biopharmaceutical Research InstituteAnhui Medical UniversityHefeiChina
| | - Shengyun Fang
- Center for Biomedical Engineering and TechnologyUniversity of MarylandBaltimoreMD
| | - Siying Wang
- School of Basic Medical SciencesAnhui Medical UniversityHefeiChina
| | - Yuxian Shen
- School of Basic Medical SciencesAnhui Medical UniversityHefeiChina,Biopharmaceutical Research InstituteAnhui Medical UniversityHefeiChina
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54
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Ma YY, Di ZM, Cao Q, Xu WS, Bi SX, Yu JS, Shen YJ, Yu YQ, Shen YX, Feng LJ. Xanthatin induces glioma cell apoptosis and inhibits tumor growth via activating endoplasmic reticulum stress-dependent CHOP pathway. Acta Pharmacol Sin 2020; 41:404-414. [PMID: 31700088 PMCID: PMC7468336 DOI: 10.1038/s41401-019-0318-5] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2019] [Accepted: 10/09/2019] [Indexed: 01/08/2023] Open
Abstract
Xanthatin is a natural sesquiterpene lactone purified from Xanthium strumarium L., which has shown prominent antitumor activity against a variety of cancer cells. In the current study, we investigated the effect of xanthatin on the growth of glioma cells in vitro and in vivo, and elucidated the underlying mechanisms. In both rat glioma C6 and human glioma U251 cell lines, xanthatin (1–15 μM) dose-dependently inhibited cell viability without apparent effect on the cell cycle. Furthermore, xanthatin treatment dose-dependently induced glioma cell apoptosis. In nude mice bearing C6 glioma tumor xenografts, administration of xanthatin (10, 20, 40 mg·kg−1·d−1, ip, for 2 weeks) dose-dependently inhibited the tumor growth, but did not affect the body weight. More importantly, xanthatin treatment markedly increased the expression levels of the endoplasmic reticulum (ER) stress-related markers in both the glioma cell lines as well as in C6 xenografts, including glucose-regulated protein 78, C/EBP-homologous protein (CHOP), activating factor 4, activating transcription factor 6, spliced X-box binding protein-1, phosphorylated protein kinase R-like endoplasmic reticulum kinase, and phosphorylated eukaryotic initiation factor 2a. Pretreatment of C6 glioma cells with the ER stress inhibitor 4-phenylbutyric acid (4-PBA, 7 mM) or knockdown of CHOP using small interfering RNA significantly attenuated xanthatin-induced cell apoptosis and increase of proapoptotic caspase-3. These results demonstrate that xanthatin induces glioma cell apoptosis and inhibits tumor growth via activating the ER stress-related unfolded protein response pathway involving CHOP induction. Xanthatin may serve as a promising agent in the treatment of human glioma.
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55
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Mahadevan J, Morikawa S, Yagi T, Abreu D, Lu S, Kanekura K, Brown CM, Urano F. A soluble endoplasmic reticulum factor as regenerative therapy for Wolfram syndrome. J Transl Med 2020; 100:1197-1207. [PMID: 32366942 PMCID: PMC7438202 DOI: 10.1038/s41374-020-0436-1] [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: 08/25/2019] [Revised: 04/18/2020] [Accepted: 04/19/2020] [Indexed: 01/24/2023] Open
Abstract
Endoplasmic reticulum (ER) stress-mediated cell death is an emerging target for human chronic disorders, including neurodegeneration and diabetes. However, there is currently no treatment for preventing ER stress-mediated cell death. Here, we show that mesencephalic astrocyte-derived neurotrophic factor (MANF), a neurotrophic factor secreted from ER stressed cells, prevents ER stress-mediated β cell death and enhances β cell proliferation in cell and mouse models of Wolfram syndrome, a prototype of ER disorders. Our results indicate that molecular pathways regulated by MANF are promising therapeutic targets for regenerative therapy of ER stress-related disorders, including diabetes, retinal degeneration, neurodegeneration, and Wolfram syndrome.
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Affiliation(s)
- Jana Mahadevan
- grid.4367.60000 0001 2355 7002Department of Medicine, Division of Endocrinology, Metabolism, and Lipid Research, Washington University School of Medicine, St. Louis, MO 63110 USA
| | - Shuntaro Morikawa
- grid.4367.60000 0001 2355 7002Department of Medicine, Division of Endocrinology, Metabolism, and Lipid Research, Washington University School of Medicine, St. Louis, MO 63110 USA
| | - Takuya Yagi
- grid.4367.60000 0001 2355 7002Department of Medicine, Division of Endocrinology, Metabolism, and Lipid Research, Washington University School of Medicine, St. Louis, MO 63110 USA
| | - Damien Abreu
- grid.4367.60000 0001 2355 7002Department of Medicine, Division of Endocrinology, Metabolism, and Lipid Research, Washington University School of Medicine, St. Louis, MO 63110 USA
| | - Simin Lu
- grid.4367.60000 0001 2355 7002Department of Medicine, Division of Endocrinology, Metabolism, and Lipid Research, Washington University School of Medicine, St. Louis, MO 63110 USA
| | - Kohsuke Kanekura
- grid.4367.60000 0001 2355 7002Department of Medicine, Division of Endocrinology, Metabolism, and Lipid Research, Washington University School of Medicine, St. Louis, MO 63110 USA ,grid.410793.80000 0001 0663 3325Department of Molecular Pathology, Tokyo Medical University, Tokyo, Japan
| | - Cris M. Brown
- grid.4367.60000 0001 2355 7002Department of Medicine, Division of Endocrinology, Metabolism, and Lipid Research, Washington University School of Medicine, St. Louis, MO 63110 USA
| | - Fumihiko Urano
- Department of Medicine, Division of Endocrinology, Metabolism, and Lipid Research, Washington University School of Medicine, St. Louis, MO, 63110, USA. .,Department of Pathology and Immunology, Washington University School of Medicine, St. Louis, MO, 63110, USA.
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56
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Galli E, Rossi J, Neumann T, Andressoo JO, Drinda S, Lindholm P. Mesencephalic Astrocyte-Derived Neurotrophic Factor Is Upregulated with Therapeutic Fasting in Humans and Diet Fat Withdrawal in Obese Mice. Sci Rep 2019; 9:14318. [PMID: 31586115 PMCID: PMC6778185 DOI: 10.1038/s41598-019-50841-6] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2019] [Accepted: 09/19/2019] [Indexed: 02/08/2023] Open
Abstract
Dietary restriction induces beneficial metabolic changes and prevents age-related deterioration. Mesencephalic astrocyte-derived neurotrophic factor (MANF) shows protective effects on cells in various models of degenerative diseases. Here we studied whether circulating concentrations of MANF are associated with fasting-induced positive effects. We quantified the levels of circulating MANF from 40 human subjects before and after therapeutic fasting. As measured by an enzyme-linked immunosorbent assay (ELISA), the mean concentration of plasma MANF increased after an average fasting of 15 days. Plasma MANF levels correlated inversely with adiponectin, a hormone that regulates metabolism, thus suggesting that MANF levels are related to metabolic homeostasis. To study the effects of dietary intervention on MANF concentrations in mice, we developed an ELISA for mouse MANF and verified its specificity using MANF knock-out (KO) tissue. A switch from high-fat to normal diet increased MANF levels and downregulated the expression of unfolded protein response (UPR) genes in the liver, indicating decreased endoplasmic reticulum (ER) stress. Liver MANF and serum adiponectin concentrations correlated inversely in mice. Our findings demonstrate that MANF expression and secretion increases with dietary intervention. The MANF correlation to adiponectin and its possible involvement in metabolic regulation and overall health warrants further studies.
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Affiliation(s)
- Emilia Galli
- Institute of Biotechnology, Helsinki Institute of Life Science, University of Helsinki, Helsinki, Finland
| | - Jari Rossi
- Department of Anatomy, Faculty of Medicine, University of Helsinki, Helsinki, Finland
| | - Thomas Neumann
- Department of Internal Medicine III, Friedrich Schiller University Jena, Jena, Germany.,Department of Rheumatology, Cantonal Hospital St. Gallen, St. Gallen, Switzerland
| | - Jaan-Olle Andressoo
- Institute of Biotechnology, Helsinki Institute of Life Science, University of Helsinki, Helsinki, Finland.,Department of Pharmacology, Faculty of Medicine, Helsinki Institute of Life Science, University of Helsinki, Helsinki, Finland.,Division of Neurogeriatrics, Department of Neurobiology, Care Sciences and Society, Karolinska Institutet, Stockholm, Sweden
| | - Stefan Drinda
- Hospital Buchinger-Wilhelmi, Überlingen, Germany.,Department for Rheumatology, Clinic St. Katharinental, Diessenhofen, Switzerland
| | - Päivi Lindholm
- Institute of Biotechnology, Helsinki Institute of Life Science, University of Helsinki, Helsinki, Finland.
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57
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Hartman JH, Richie CT, Gordon KL, Mello DF, Castillo P, Zhu A, Wang Y, Hoffer BJ, Sherwood DR, Meyer JN, Harvey BK. MANF deletion abrogates early larval Caenorhabditis elegans stress response to tunicamycin and Pseudomonas aeruginosa. Eur J Cell Biol 2019; 98:151043. [PMID: 31138438 DOI: 10.1016/j.ejcb.2019.05.002] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2018] [Revised: 04/16/2019] [Accepted: 05/20/2019] [Indexed: 02/06/2023] Open
Abstract
Mesencephalic astrocyte-derived neurotrophic factor (MANF) is the only human neurotrophic factor with an evolutionarily-conserved C. elegans homolog, Y54G2A.23 or manf-1. MANF is a small, soluble, endoplasmic-reticulum (ER)-resident protein that is secreted upon ER stress and promotes survival of target cells such as neurons. However, the role of MANF in ER stress and its mechanism of cellular protection are not clear and the function of MANF in C. elegans is only beginning to emerge. In this study, we show that depletion of C. elegans manf-1 causes a slight decrease in lifespan and brood size; furthermore, combined depletion of manf-1 and the IRE-1/XBP-1 ER stress/UPR pathway resulted in sterile animals that did not produce viable progeny. We demonstrate upregulation of markers of ER stress in L1 larval nematodes, as measured by hsp-3 and hsp-4 transcription, upon depletion of manf-1 by RNAi or mutation; however, there was no difference in tunicamycin-induced expression of hsp-3 and hsp-4 between wild-type and MANF-deficient worms. Surprisingly, larval growth arrest observed in wild-type nematodes reared on tunicamycin is completely prevented in the manf-1 (tm3603) mutant. Transcriptional microarray analysis revealed that manf-1 mutant L1 larvae exhibit a novel modulation of innate immunity genes in response to tunicamycin. The hypothesis that manf-1 negatively regulates the innate immunity pathway is supported by our finding that the development of manf-1 mutant larvae compared to wild-type larvae is not inhibited by growth on P. aeruginosa. Together, our data represent the first characterization of C. elegans MANF as a key modulator of organismal ER stress and immunity.
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Affiliation(s)
- Jessica H Hartman
- Nicholas School of the Environment, Duke University, Durham, NC, 27708, United States of America
| | - Christopher T Richie
- Intramural Research Program, National Institute on Drug Abuse, National Institutes of Health, Baltimore, MD, 21224, United States of America
| | - Kacy L Gordon
- Department of Biology, Regeneration Next, Duke University, Durham, NC, 27708, United States of America
| | - Danielle F Mello
- Nicholas School of the Environment, Duke University, Durham, NC, 27708, United States of America
| | - Priscila Castillo
- Intramural Research Program, National Institute on Drug Abuse, National Institutes of Health, Baltimore, MD, 21224, United States of America
| | - April Zhu
- Intramural Research Program, National Institute on Drug Abuse, National Institutes of Health, Baltimore, MD, 21224, United States of America
| | - Yun Wang
- Intramural Research Program, National Institute on Drug Abuse, National Institutes of Health, Baltimore, MD, 21224, United States of America
| | - Barry J Hoffer
- Intramural Research Program, National Institute on Drug Abuse, National Institutes of Health, Baltimore, MD, 21224, United States of America
| | - David R Sherwood
- Department of Biology, Regeneration Next, Duke University, Durham, NC, 27708, United States of America
| | - Joel N Meyer
- Nicholas School of the Environment, Duke University, Durham, NC, 27708, United States of America
| | - Brandon K Harvey
- Intramural Research Program, National Institute on Drug Abuse, National Institutes of Health, Baltimore, MD, 21224, United States of America.
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58
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Anttila JE, Pöyhönen S, Airavaara M. Secondary Pathology of the Thalamus after Focal Cortical Stroke in Rats is not Associated with Thermal or Mechanical Hypersensitivity and is Not Alleviated by Intra-Thalamic Post-Stroke Delivery of Recombinant CDNF or MANF. Cell Transplant 2019; 28:425-438. [PMID: 31037983 PMCID: PMC6628565 DOI: 10.1177/0963689719837915] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
A stroke affecting the somatosensory pathway can trigger central post-stroke pain
syndrome (CPSP). The symptoms often include hyperalgesia, which has also been described in
rodents after the direct damage of the thalamus. Previous studies have shown that
hemorrhagic stroke or ischemia caused by vasoconstriction in the thalamus induces
increased pain sensitivity. We investigated whether inducing secondary damage in the
thalamus by a cortical stroke causes similar pain hypersensitivity as has previously been
reported with direct ischemic injury. We induced a focal cortical ischemia-reperfusion
injury in male rats, quantified the amount of secondary neurodegeneration in the thalamus,
and measured whether the thalamic neurodegeneration is associated with thermal or
mechanical hypersensitivity. After one month, we observed extensive neuronal degeneration
and found approximately 40% decrease in the number of NeuN+ cells in the ipsilateral
thalamus. At the same time, there was a massive accumulation—a 30-fold increase—of
phagocytic cells in the ipsilateral thalamus. However, despite the evident damage in the
thalamus, we did not observe thermal or mechanical sensitization. Thus, thalamic
neurodegeneration after cortical ischemia-reperfusion does not induce CPSP-like symptoms
in rats, and these results suggest that direct ischemic damage is needed for CPSP
induction. Despite not observing hyperalgesia, we investigated whether administration of
cerebral dopamine neurotrophic factor (CDNF) and mesencephalic astrocyte-derived
neurotrophic factor (MANF) into the ipsilateral thalamus would reduce the secondary
damage. We gave a single injection (10 µg) of recombinant CDNF or MANF protein into the
thalamus at 7 days post-stroke. Both CDNF and MANF treatment promoted the functional
recovery but had no effect on the neuronal loss or the amount of phagocytic cells in the
thalamus.
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Affiliation(s)
- Jenni E. Anttila
- Institute of Biotechnology, HiLIFE, University of Helsinki, Helsinki,
Finland
| | - Suvi Pöyhönen
- Institute of Biotechnology, HiLIFE, University of Helsinki, Helsinki,
Finland
| | - Mikko Airavaara
- Institute of Biotechnology, HiLIFE, University of Helsinki, Helsinki,
Finland
- Mikko Airavaara, Institute of Biotechnology, HiLIFE,
University of Helsinki, P.O. Box 56, Helsinki 00014, Finland.
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59
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Xu S, Di Z, He Y, Wang R, Ma Y, Sun R, Li J, Wang T, Shen Y, Fang S, Feng L, Shen Y. Mesencephalic astrocyte-derived neurotrophic factor (MANF) protects against Aβ toxicity via attenuating Aβ-induced endoplasmic reticulum stress. J Neuroinflammation 2019; 16:35. [PMID: 30760285 PMCID: PMC6373169 DOI: 10.1186/s12974-019-1429-0] [Citation(s) in RCA: 47] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2018] [Accepted: 02/03/2019] [Indexed: 12/15/2022] Open
Abstract
BACKGROUND Extracellular accumulation of amyloid β-peptide (Aβ) is one of pathological hallmarks of Alzheimer's disease (AD) and contributes to the neuronal loss. Mesencephalic astrocyte-derived neurotrophic factor (MANF) is an endoplasmic reticulum (ER) stress-inducible neurotrophic factor. Many groups, including ours, have proved that MANF rescues neuronal loss in several neurological disorders, such as Parkinson's disease and cerebral ischemia. However, whether MANF exerts its protective effect against Aβ neurotoxicity in AD remains unknown. METHODS In the present study, the characteristic expressions of MANF in Aβ1-42-treated neuronal cells as well as in the brains of APP/PS1 transgenic mice were analyzed by immunofluorescence staining, qPCR, and Western blot. The effects of MANF overexpression, MANF knockdown, or recombination human MANF protein (rhMANF) on neuron viability, apoptosis, and the expression of ER stress-related proteins following Aβ1-42 exposure were also investigated. RESULTS The results showed the increased expressions of MANF, as well as ER stress markers immunoglobulin-binding protein (BiP) and C/EBP homologous protein (CHOP), in the brains of the APP/PS1 transgenic mice and Aβ1-42-treated neuronal cells. MANF overexpression or rhMANF treatment partially protected against Aβ1-42-induced neuronal cell death, associated with marked decrease of cleaved caspase-3, whereas MANF knockdown with siRNA aggravated Aβ1-42 cytotoxicity including caspase-3 activation. Further study demonstrated that the expressions of BiP, ATF6, phosphorylated-IRE1, XBP1s, phosphorylated-eIF2α, ATF4, and CHOP were significantly downregulated by MANF overexpression or rhMANF treatment in neuronal cells following Aβ1-42 exposure, whereas knockdown of MANF has the opposite effect. CONCLUSIONS These findings demonstrate that MANF may exert neuroprotective effects against Aβ-induced neurotoxicity through attenuating ER stress, suggesting that an applicability of MANF as a therapeutic candidate for AD.
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Affiliation(s)
- Shengchun Xu
- School of Basic Medical Sciences, Anhui Medical University, Hefei, 230032, China
| | - Zemin Di
- School of Basic Medical Sciences, Anhui Medical University, Hefei, 230032, China.,Biopharmaceutical Research Institute, Anhui Medical University, Hefei, 230032, China.,Institute of Basic Medical Sciences, Anhui Medical University, Hefei, 230032, China
| | - Yufeng He
- School of Basic Medical Sciences, Anhui Medical University, Hefei, 230032, China.,Biopharmaceutical Research Institute, Anhui Medical University, Hefei, 230032, China.,Institute of Basic Medical Sciences, Anhui Medical University, Hefei, 230032, China
| | - Runjie Wang
- School of Basic Medical Sciences, Anhui Medical University, Hefei, 230032, China.,Biopharmaceutical Research Institute, Anhui Medical University, Hefei, 230032, China.,Institute of Basic Medical Sciences, Anhui Medical University, Hefei, 230032, China
| | - Yuyang Ma
- School of Basic Medical Sciences, Anhui Medical University, Hefei, 230032, China.,Biopharmaceutical Research Institute, Anhui Medical University, Hefei, 230032, China.,Institute of Basic Medical Sciences, Anhui Medical University, Hefei, 230032, China
| | - Rui Sun
- School of Basic Medical Sciences, Anhui Medical University, Hefei, 230032, China.,Biopharmaceutical Research Institute, Anhui Medical University, Hefei, 230032, China
| | - Jing Li
- School of Basic Medical Sciences, Anhui Medical University, Hefei, 230032, China.,Biopharmaceutical Research Institute, Anhui Medical University, Hefei, 230032, China
| | - Tao Wang
- School of Basic Medical Sciences, Anhui Medical University, Hefei, 230032, China
| | - Yujun Shen
- School of Basic Medical Sciences, Anhui Medical University, Hefei, 230032, China.,Biopharmaceutical Research Institute, Anhui Medical University, Hefei, 230032, China.,Institute of Basic Medical Sciences, Anhui Medical University, Hefei, 230032, China
| | - Shengyun Fang
- School of Basic Medical Sciences, Anhui Medical University, Hefei, 230032, China.,Biopharmaceutical Research Institute, Anhui Medical University, Hefei, 230032, China.,Center for Biomedical Engineering and Technology, University of Maryland, Baltimore, MD, USA
| | - Lijie Feng
- School of Basic Medical Sciences, Anhui Medical University, Hefei, 230032, China. .,Biopharmaceutical Research Institute, Anhui Medical University, Hefei, 230032, China. .,Institute of Basic Medical Sciences, Anhui Medical University, Hefei, 230032, China.
| | - Yuxian Shen
- School of Basic Medical Sciences, Anhui Medical University, Hefei, 230032, China. .,Biopharmaceutical Research Institute, Anhui Medical University, Hefei, 230032, China. .,Institute of Basic Medical Sciences, Anhui Medical University, Hefei, 230032, China.
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Sousa-Victor P, Neves J, Cedron-Craft W, Ventura PB, Liao CY, Riley RR, Soifer I, van Bruggen N, Kolumam GA, Villeda SA, Lamba DA, Jasper H. MANF regulates metabolic and immune homeostasis in ageing and protects against liver damage. Nat Metab 2019; 1:276-290. [PMID: 31489403 PMCID: PMC6727652 DOI: 10.1038/s42255-018-0023-6] [Citation(s) in RCA: 83] [Impact Index Per Article: 16.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Aging is accompanied by altered intercellular communication, deregulated metabolic function, and inflammation. Interventions that restore a youthful state delay or reverse these processes, prompting the search for systemic regulators of metabolic and immune homeostasis. Here we identify MANF, a secreted stress-response protein with immune modulatory properties, as an evolutionarily conserved regulator of systemic and in particular liver metabolic homeostasis. We show that MANF levels decline with age in flies, mice and humans, and MANF overexpression extends lifespan in flies. MANF deficient flies exhibit enhanced inflammation and shorter lifespans, and MANF heterozygous mice exhibit inflammatory phenotypes in various tissues, as well as progressive liver damage, fibrosis, and steatosis. We show that immune cell-derived MANF protects against liver inflammation and fibrosis, while hepatocyte-derived MANF prevents hepatosteatosis. Liver rejuvenation by heterochronic parabiosis in mice further depends on MANF, while MANF supplementation ameliorates several hallmarks of liver aging, prevents hepatosteatosis induced by diet, and improves age-related metabolic dysfunction. Our findings identify MANF as a systemic regulator of homeostasis in young animals, suggesting a therapeutic application for MANF in age-related metabolic diseases.
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Affiliation(s)
- Pedro Sousa-Victor
- Paul F. Glenn Center for Biology of Aging Research, Buck Institute for Research on Aging, Novato, CA, USA
| | - Joana Neves
- Paul F. Glenn Center for Biology of Aging Research, Buck Institute for Research on Aging, Novato, CA, USA
| | - Wendy Cedron-Craft
- Paul F. Glenn Center for Biology of Aging Research, Buck Institute for Research on Aging, Novato, CA, USA
| | - P Britten Ventura
- Department of Anatomy, University of California, San Francisco, San Francisco, CA, USA
- The Eli and Edythe Broad Center of Regeneration Medicine and Stem Cell Research, University of California, San Francisco, San Francisco, CA, USA
| | - Chen-Yu Liao
- Paul F. Glenn Center for Biology of Aging Research, Buck Institute for Research on Aging, Novato, CA, USA
| | - Rebeccah R Riley
- Paul F. Glenn Center for Biology of Aging Research, Buck Institute for Research on Aging, Novato, CA, USA
| | - Ilya Soifer
- Calico Life Sciences LLC, South San Francisco, CA, USA
| | | | | | - Saul A Villeda
- Department of Anatomy, University of California, San Francisco, San Francisco, CA, USA
- The Eli and Edythe Broad Center of Regeneration Medicine and Stem Cell Research, University of California, San Francisco, San Francisco, CA, USA
| | - Deepak A Lamba
- Paul F. Glenn Center for Biology of Aging Research, Buck Institute for Research on Aging, Novato, CA, USA
- The Eli and Edythe Broad Center of Regeneration Medicine and Stem Cell Research, University of California, San Francisco, San Francisco, CA, USA
- Department of Ophthalmology, University of California, San Francisco, San Francisco, CA, USA
| | - Heinrich Jasper
- Paul F. Glenn Center for Biology of Aging Research, Buck Institute for Research on Aging, Novato, CA, USA.
- Immunology Discovery, Genentech, South San Francisco, CA, USA.
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61
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Danilova T, Belevich I, Li H, Palm E, Jokitalo E, Otonkoski T, Lindahl M. MANF Is Required for the Postnatal Expansion and Maintenance of Pancreatic β-Cell Mass in Mice. Diabetes 2019; 68:66-80. [PMID: 30305368 DOI: 10.2337/db17-1149] [Citation(s) in RCA: 39] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/25/2017] [Accepted: 09/30/2018] [Indexed: 11/13/2022]
Abstract
Global lack of mesencephalic astrocyte-derived neurotropic factor (MANF) leads to progressive postnatal loss of β-cell mass and insulin-dependent diabetes in mice. Similar to Manf-/- mice, embryonic ablation of MANF specifically from the pancreas results in diabetes. In this study, we assessed the importance of MANF for the postnatal expansion of pancreatic β-cell mass and for adult β-cell maintenance in mice. Detailed analysis of Pdx-1Cre+/- ::Manffl/fl mice revealed mosaic MANF expression in postnatal pancreata and a significant correlation between the number of MANF-positive β-cells and β-cell mass in individual mice. In vitro, recombinant MANF induced β-cell proliferation in islets from aged mice and protected from hyperglycemia-induced endoplasmic reticulum (ER) stress. Consequently, excision of MANF from β-cells of adult MIP-1CreERT::Manffl/fl mice resulted in reduced β-cell mass and diabetes caused largely by β-cell ER stress and apoptosis, possibly accompanied by β-cell dedifferentiation and reduced rates of β-cell proliferation. Thus, MANF expression in adult mouse β-cells is needed for their maintenance in vivo. We also revealed a mechanistic link between ER stress and inflammatory signaling pathways leading to β-cell death in the absence of MANF. Hence, MANF might be a potential target for regenerative therapy in diabetes.
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Affiliation(s)
- Tatiana Danilova
- Institute of Biotechnology, HiLIFE, University of Helsinki, Helsinki, Finland
| | - Ilya Belevich
- Institute of Biotechnology, HiLIFE, University of Helsinki, Helsinki, Finland
| | - Huini Li
- Institute of Biotechnology, HiLIFE, University of Helsinki, Helsinki, Finland
| | - Erik Palm
- Institute of Biotechnology, HiLIFE, University of Helsinki, Helsinki, Finland
| | - Eija Jokitalo
- Institute of Biotechnology, HiLIFE, University of Helsinki, Helsinki, Finland
| | - Timo Otonkoski
- Research Programs Unit, Molecular Neurology, Biomedicum Stem Cell Center, University of Helsinki, Helsinki, Finland
- Children's Hospital, Helsinki University Central Hospital, Helsinki, Finland
| | - Maria Lindahl
- Institute of Biotechnology, HiLIFE, University of Helsinki, Helsinki, Finland
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62
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Yang S, Li S, Li XJ. MANF: A New Player in the Control of Energy Homeostasis, and Beyond. Front Physiol 2018; 9:1725. [PMID: 30555354 PMCID: PMC6282101 DOI: 10.3389/fphys.2018.01725] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2018] [Accepted: 11/15/2018] [Indexed: 01/06/2023] Open
Abstract
All human behaviors, including the control of energy homeostasis, are ultimately mediated by neuronal activities in the brain. Neurotrophic factors represent a protein family that plays important roles in regulating neuronal development, function, and survival. It has been well established that canonical neurotrophic factors, such as brain-derived neurotrophic factor (BDNF) and ciliary neurotrophic factor (CNTF), play important roles in the central regulation of energy homeostasis. Recently, a class of non-canonical neurotrophic factors, represented by mesencephalic astrocyte-derived neurotrophic factor (MANF), has been discovered. MANF is structurally and functionally distinct from those canonical neurotrophic factors, hence raising the issue of MANF being non-canonical. Nonetheless, emerging evidence suggests that MANF is critically involved in many neuronal activities. Here, we review our current understanding about the functions of MANF in the brain, with a primary focus on the control of energy homeostasis.
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Affiliation(s)
- Su Yang
- Department of Human Genetics, Emory University School of Medicine, Atlanta, GA, United States
| | - Shihua Li
- GHM Institute of CNS Regeneration, Jinan University Guangzhou, China
| | - Xiao-Jiang Li
- Department of Human Genetics, Emory University School of Medicine, Atlanta, GA, United States
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63
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Sousa-Victor P, Jasper H, Neves J. Trophic Factors in Inflammation and Regeneration: The Role of MANF and CDNF. Front Physiol 2018; 9:1629. [PMID: 30515104 PMCID: PMC6255971 DOI: 10.3389/fphys.2018.01629] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2018] [Accepted: 10/29/2018] [Indexed: 12/26/2022] Open
Abstract
Regeneration is an important process in multicellular organisms, responsible for homeostatic renewal and repair of different organs after injury. Immune cell activation is observed at early stages of the regenerative response and its regulation is essential for regenerative success. Thus, immune regulators play central roles in optimizing regenerative responses. Neurotrophic factors (NTFs) are secreted molecules, defined by their ability to support neuronal cell types. However, emerging evidence suggests that they can also play important functions in the regulation of immune cell activation and tissue repair. Here we discuss the literature supporting a role of NTFs in the regulation of inflammation and regeneration. We will focus, in particular, in the emerging roles of mesencephalic astrocyte-derived neurotrophic factor (MANF) and cerebral dopamine neurotrophic factor (CDNF) in the regulation of immune cell function and in the central role that immune modulation plays in their biological activity in vivo. Finally, we will discuss the potential use of these factors to optimize regenerative success in vivo, both within and beyond the nervous system.
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Affiliation(s)
- Pedro Sousa-Victor
- Paul F. Glenn Center for Biology of Aging Research, Buck Institute for Research on Aging, Novato, CA, United States
| | - Heinrich Jasper
- Paul F. Glenn Center for Biology of Aging Research, Buck Institute for Research on Aging, Novato, CA, United States.,Immunology Discovery, Genentech, Inc., South San Francisco, CA, United States
| | - Joana Neves
- Paul F. Glenn Center for Biology of Aging Research, Buck Institute for Research on Aging, Novato, CA, United States
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64
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Wang CH, Jiang TC, Qiang WM, Zhang L, Feng LJ, Shen YJ, Shen YX. Activator protein‑1 is a novel regulator of mesencephalic astrocyte‑derived neurotrophic factor transcription. Mol Med Rep 2018; 18:5765-5774. [PMID: 30365109 DOI: 10.3892/mmr.2018.9601] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2018] [Accepted: 10/03/2018] [Indexed: 11/05/2022] Open
Abstract
Mesencephalic astrocyte‑derived neurotrophic factor (MANF) is an endoplasmic reticulum stress‑inducible protein, which has been suggested to be upregulated in inflammatory diseases; however, how inflammation regulates its transcription remains unclear. Activator protein‑1 (AP‑1), which is a transcription factor complex composed of c‑Fos and c‑Jun, is activated during the inflammatory process. The present study aimed to investigate whether the AP‑1 complex regulates MANF transcription. The results of a luciferase reporter assay revealed that one of three putative AP‑1 binding sites in the MANF promoter region is essential for enhancement of MANF transcription. Mechanistically, AP‑1 was revealed to directly bind to the promoter region of the MANF gene by chromatin immunoprecipitation assay. Furthermore, MANF was strongly expressed in the liver tissues of patients with hepatitis B virus (HBV) infection, compared with in normal liver tissues from patients with hepatic hemangioma. Furthermore, c‑Fos and c‑Jun were also upregulated in the nuclei of hepatocytes from patients with HBV infection. In mice treated with carbon tetrachloride, the expression patterns of MANF, c‑Fos and c‑Jun were similar to those in patients with HBV. These results suggested that the AP‑1 complex may be a novel regulator of MANF transcription, which may be involved in liver inflammation and fibrosis.
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Affiliation(s)
- Chang-Hui Wang
- Department of Pharmacology, School of Pharmacy, Anhui Medical University, Hefei, Anhui 230032, P.R. China
| | - Tong-Cui Jiang
- Department of Pharmacology, School of Basic Medical Sciences, Anhui Medical University, Hefei, Anhui 230032, P.R. China
| | - Wei-Min Qiang
- Department of Pharmacology, School of Basic Medical Sciences, Anhui Medical University, Hefei, Anhui 230032, P.R. China
| | - Li Zhang
- Department of Pharmacology, School of Basic Medical Sciences, Anhui Medical University, Hefei, Anhui 230032, P.R. China
| | - Li-Jie Feng
- Department of Pharmacology, School of Basic Medical Sciences, Anhui Medical University, Hefei, Anhui 230032, P.R. China
| | - Yu-Jun Shen
- Department of Pharmacology, School of Basic Medical Sciences, Anhui Medical University, Hefei, Anhui 230032, P.R. China
| | - Yu-Xian Shen
- Department of Pharmacology, School of Basic Medical Sciences, Anhui Medical University, Hefei, Anhui 230032, P.R. China
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65
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Nasrolahi A, Mahmoudi J, Akbarzadeh A, Karimipour M, Sadigh-Eteghad S, Salehi R, Farhoudi M. Neurotrophic factors hold promise for the future of Parkinson's disease treatment: is there a light at the end of the tunnel? Rev Neurosci 2018; 29:475-489. [PMID: 29305570 DOI: 10.1515/revneuro-2017-0040] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2017] [Accepted: 10/27/2017] [Indexed: 01/08/2023]
Abstract
Parkinson's disease (PD) is the second most common neurodegenerative disorder and is characterized by a spectrum of clinicopathologic signs and a complex etiology. PD results from the degeneration of dopaminergic (DAergic) neurons in the substantia nigra. Current therapies for PD are only able to alleviate symptoms without stopping disease progression. In addition, the available therapeutic strategies do not have long-lasting effects. Furthermore, these therapies cause different ranges of adverse side effects. There is great interest in neurotrophic factors (NTFs) due to their ability to promote the survival of different neural cells. These factors are divided into four families: neurotrophins, neurokines, the glial cell line-derived NTF family of ligands, and the newly recognized cerebral DA NTF/mesencephalic astrocyte-derived NTF family. The protective and therapeutic effects of these factors on DAergic neurons make them suitable for the prevention of progressive cell loss in PD. Based on the above premise, we focus on the protective effects of NTFs, especially CDNF and MANF, on nigrostriatal DAergic neurons in PD.
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Affiliation(s)
- Ava Nasrolahi
- Molecular Medicine Department, Faculty of Advanced Medical Sciences, Tabriz University of Medical Sciences, Tabriz 51656-87386, Iran.,Neurosciences Research Center, Tabriz University of Medical Sciences, Tabriz 51666-14756, Iran
| | - Javad Mahmoudi
- Neurosciences Research Center, Tabriz University of Medical Sciences, Tabriz 51666-14756, Iran
| | - Abolfazl Akbarzadeh
- Department of Medical Nanotechnology, Faculty of Advanced Medical Sciences, Tabriz University of Medical Sciences, Tabriz 51656-87386, Iran
| | - Mohammad Karimipour
- Neuroscience Department, Faculty of Advanced Medical Sciences, Tabriz University of Medical Sciences, Tabriz 51656-87386, Iran.,Department of Anatomy, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz 51656-87386, Iran
| | - Saeed Sadigh-Eteghad
- Neurosciences Research Center, Tabriz University of Medical Sciences, Tabriz 51666-14756, Iran
| | - Roya Salehi
- Department of Medical Nanotechnology, Faculty of Advanced Medical Sciences, Tabriz University of Medical Sciences, Tabriz 51656-87386, Iran
| | - Mehdi Farhoudi
- Neurosciences Research Center, Tabriz University of Medical Sciences, Tabriz 51666-14756, Iran.,Neuroscience Department, Faculty of Advanced Medical Sciences, Tabriz University of Medical Sciences, Tabriz 51656-87386, Iran
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66
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Danilova T, Lindahl M. Emerging Roles for Mesencephalic Astrocyte-Derived Neurotrophic Factor (MANF) in Pancreatic Beta Cells and Diabetes. Front Physiol 2018; 9:1457. [PMID: 30386256 PMCID: PMC6198132 DOI: 10.3389/fphys.2018.01457] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2018] [Accepted: 09/26/2018] [Indexed: 12/31/2022] Open
Abstract
Mesencephalic astrocyte-derived neurotrophic factor (MANF) was originally identified as a secreted trophic factor for dopamine neurons in vitro. It protects and restores damaged cells in rodent models of Parkinson's disease, brain and heart ischemia, spinocerebellar ataxia and retina in vivo. However, its exact mechanism of action is not known. MANF is widely expressed in most human and mouse organs with high levels in secretory tissues. Intracellularly, MANF localizes to the endoplasmic reticulum (ER) and ER stress increases it's expression in cells and tissues. Furthermore, increased MANF levels has been detected in the sera of young children with newly diagnosed Type 1 (T1D) diabetes and Type 2 (T2D) diabetic patients. ER stress is caused by the accumulation of misfolded and aggregated proteins in the ER. It activates a cellular defense mechanism, the unfolded protein response (UPR), a signaling cascade trying to restore ER homeostasis. However, if prolonged, unresolved ER stress leads to apoptosis. Unresolved ER stress contributes to the progressive death of pancreatic insulin-producing beta cells in both T1D and T2D. Diabetes mellitus is characterized by hyperglycemia, caused by the inability of the beta cells to maintain sufficient levels of circulating insulin. The current medications, insulin and antidiabetic drugs, alleviate diabetic symptoms but cannot reconstitute physiological insulin secretion which increases the risk of devastating vascular complications of the disease. Thus, one of the main strategies in improving current diabetes therapy is to define and validate novel approaches to protect beta cells from stress as well as activate their regeneration. Embryonic deletion of the Manf gene in mice led to gradual postnatal development of insulin-deficient diabetes caused by reduced beta cell proliferation and increased beta cell death due to increased and sustained ER stress. In vitro, recombinant MANF partly protected mouse and human beta cells from ER stress-induced beta cell death and potentiated mouse and human beta cell proliferation. Importantly, in vivo overexpression of MANF in the pancreas of T1D mice led to increased beta cell proliferation and decreased beta cell death, suggesting that MANF could be a new therapeutic candidate for beta cell protection and regeneration in diabetes.
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Affiliation(s)
- Tatiana Danilova
- Institute of Biotechnology, HiLIFE, University of Helsinki, Helsinki, Finland
| | - Maria Lindahl
- Institute of Biotechnology, HiLIFE, University of Helsinki, Helsinki, Finland
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67
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Hakonen E, Chandra V, Fogarty CL, Yu NYL, Ustinov J, Katayama S, Galli E, Danilova T, Lindholm P, Vartiainen A, Einarsdottir E, Krjutškov K, Kere J, Saarma M, Lindahl M, Otonkoski T. MANF protects human pancreatic beta cells against stress-induced cell death. Diabetologia 2018; 61:2202-2214. [PMID: 30032427 PMCID: PMC6133171 DOI: 10.1007/s00125-018-4687-y] [Citation(s) in RCA: 47] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/18/2018] [Accepted: 06/12/2018] [Indexed: 12/22/2022]
Abstract
AIMS/HYPOTHESIS There is a great need to identify factors that could protect pancreatic beta cells against apoptosis or stimulate their replication and thus prevent or reverse the development of diabetes. One potential candidate is mesencephalic astrocyte-derived neurotrophic factor (MANF), an endoplasmic reticulum (ER) stress inducible protein. Manf knockout mice used as a model of diabetes develop the condition because of increased apoptosis and reduced proliferation of beta cells, apparently related to ER stress. Given this novel association between MANF and beta cell death, we studied the potential of MANF to protect human beta cells against experimentally induced ER stress. METHODS Primary human islets were challenged with proinflammatory cytokines, with or without MANF. Cell viability was analysed and global transcriptomic analysis performed. Results were further validated using the human beta cell line EndoC-βH1. RESULTS There was increased expression and secretion of MANF in human beta cells in response to cytokines. Addition of recombinant human MANF reduced cytokine-induced cell death by 38% in human islets (p < 0.05). MANF knockdown in EndoC-βH1 cells led to increased ER stress after cytokine challenge. Mechanistic studies showed that the protective effect of MANF was associated with repression of the NF-κB signalling pathway and amelioration of ER stress. MANF also increased the proliferation of primary human beta cells twofold when TGF-β signalling was inhibited (p < 0.01). CONCLUSIONS/INTERPRETATION Our studies show that exogenous MANF protein can provide protection to human beta cells against death induced by inflammatory stress. The antiapoptotic and mitogenic properties of MANF make it a potential therapeutic agent for beta cell protection.
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Affiliation(s)
- Elina Hakonen
- Research Programs Unit, Molecular Neurology, Biomedicum Helsinki, University of Helsinki, PO Box 63, (Haartmaninkatu 8), 00014, Helsinki, Finland
- Children's Hospital, University of Helsinki and Helsinki University Central Hospital, Helsinki, Finland
| | - Vikash Chandra
- Research Programs Unit, Molecular Neurology, Biomedicum Helsinki, University of Helsinki, PO Box 63, (Haartmaninkatu 8), 00014, Helsinki, Finland.
| | | | - Nancy Yiu-Lin Yu
- Department of Biosciences and Nutrition, Karolinska Institutet, Huddinge, Sweden
| | - Jarkko Ustinov
- Research Programs Unit, Molecular Neurology, Biomedicum Helsinki, University of Helsinki, PO Box 63, (Haartmaninkatu 8), 00014, Helsinki, Finland
| | - Shintaro Katayama
- Department of Biosciences and Nutrition, Karolinska Institutet, Huddinge, Sweden
| | - Emilia Galli
- Research Program in Developmental Biology, Institute of Biotechnology, University of Helsinki, Helsinki, Finland
| | - Tatiana Danilova
- Research Program in Developmental Biology, Institute of Biotechnology, University of Helsinki, Helsinki, Finland
| | - Päivi Lindholm
- Research Program in Developmental Biology, Institute of Biotechnology, University of Helsinki, Helsinki, Finland
| | - Aki Vartiainen
- Research Programs Unit, Molecular Neurology, Biomedicum Helsinki, University of Helsinki, PO Box 63, (Haartmaninkatu 8), 00014, Helsinki, Finland
| | - Elisabet Einarsdottir
- Department of Biosciences and Nutrition, Karolinska Institutet, Huddinge, Sweden
- The Folkhälsan Institute of Genetics, Helsinki, Finland
| | - Kaarel Krjutškov
- Department of Biosciences and Nutrition, Karolinska Institutet, Huddinge, Sweden
- The Folkhälsan Institute of Genetics, Helsinki, Finland
- Competence Centre on Health Technologies, Tartu, Estonia
| | - Juha Kere
- Research Programs Unit, Molecular Neurology, Biomedicum Helsinki, University of Helsinki, PO Box 63, (Haartmaninkatu 8), 00014, Helsinki, Finland
- Department of Biosciences and Nutrition, Karolinska Institutet, Huddinge, Sweden
- The Folkhälsan Institute of Genetics, Helsinki, Finland
- Department of Medical and Molecular Genetics, King's College London, London, UK
| | - Mart Saarma
- Research Program in Developmental Biology, Institute of Biotechnology, University of Helsinki, Helsinki, Finland
| | - Maria Lindahl
- Research Program in Developmental Biology, Institute of Biotechnology, University of Helsinki, Helsinki, Finland
| | - Timo Otonkoski
- Research Programs Unit, Molecular Neurology, Biomedicum Helsinki, University of Helsinki, PO Box 63, (Haartmaninkatu 8), 00014, Helsinki, Finland.
- Children's Hospital, University of Helsinki and Helsinki University Central Hospital, Helsinki, Finland.
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68
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Renko JM, Bäck S, Voutilainen MH, Piepponen TP, Reenilä I, Saarma M, Tuominen RK. Mesencephalic Astrocyte-Derived Neurotrophic Factor (MANF) Elevates Stimulus-Evoked Release of Dopamine in Freely-Moving Rats. Mol Neurobiol 2018; 55:6755-6768. [PMID: 29349573 PMCID: PMC6061195 DOI: 10.1007/s12035-018-0872-8] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2017] [Accepted: 01/07/2018] [Indexed: 01/12/2023]
Abstract
Neurotrophic factors (NTFs) hold potential as disease-modifying therapies for neurodegenerative disorders like Parkinson's disease. Glial cell line-derived neurotrophic factor (GDNF), cerebral dopamine neurotrophic factor (CDNF), and mesencephalic astrocyte-derived neurotrophic factor (MANF) have shown neuroprotective and restorative effects on nigral dopaminergic neurons in various animal models of Parkinson's disease. To date, however, their effects on brain neurochemistry have not been compared using in vivo microdialysis. We measured extracellular concentration of dopamine and activity of dopamine neurochemistry-regulating enzymes in the nigrostriatal system of rat brain. NTFs were unilaterally injected into the striatum of intact Wistar rats. Brain microdialysis experiments were performed 1 and 3 weeks later in freely-moving animals. One week after the treatment, we observed enhanced stimulus-evoked release of dopamine in the striatum of MANF-treated rats, but not in rats treated with GDNF or CDNF. MANF also increased dopamine turnover. Although GDNF did not affect the extracellular level of dopamine, we found significantly elevated tyrosine hydroxylase (TH) and catechol-O-methyltransferase (COMT) activity and decreased monoamine oxidase A (MAO-A) activity in striatal tissue samples 1 week after GDNF injection. The results show that GDNF, CDNF, and MANF have divergent effects on dopaminergic neurotransmission, as well as on dopamine synthetizing and metabolizing enzymes. Although the cellular mechanisms remain to be clarified, knowing the biological effects of exogenously administrated NTFs in intact brain is an important step towards developing novel neurotrophic treatments for degenerative brain diseases.
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Affiliation(s)
- Juho-Matti Renko
- Division of Pharmacology and Pharmacotherapy, University of Helsinki, Viikinkaari 5E, P.O. Box 56, 00014, Helsinki, Finland.
| | - Susanne Bäck
- Division of Pharmacology and Pharmacotherapy, University of Helsinki, Viikinkaari 5E, P.O. Box 56, 00014, Helsinki, Finland
| | - Merja H Voutilainen
- Institute of Biotechnology, Research Program in Developmental Biology, University of Helsinki, Viikinkaari 5D, P.O. Box 56, 00014, Helsinki, Finland
| | - T Petteri Piepponen
- Division of Pharmacology and Pharmacotherapy, University of Helsinki, Viikinkaari 5E, P.O. Box 56, 00014, Helsinki, Finland
| | - Ilkka Reenilä
- Division of Pharmacology and Pharmacotherapy, University of Helsinki, Viikinkaari 5E, P.O. Box 56, 00014, Helsinki, Finland
| | - Mart Saarma
- Institute of Biotechnology, Research Program in Developmental Biology, University of Helsinki, Viikinkaari 5D, P.O. Box 56, 00014, Helsinki, Finland
| | - Raimo K Tuominen
- Division of Pharmacology and Pharmacotherapy, University of Helsinki, Viikinkaari 5E, P.O. Box 56, 00014, Helsinki, Finland
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69
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Zhang Z, Shen Y, Luo H, Zhang F, Peng D, Jing L, Wu Y, Xia X, Song Y, Li W, Jin L. MANF protects dopamine neurons and locomotion defects from a human α-synuclein induced Parkinson's disease model in C. elegans by regulating ER stress and autophagy pathways. Exp Neurol 2018; 308:59-71. [PMID: 29959908 DOI: 10.1016/j.expneurol.2018.06.016] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2018] [Revised: 06/03/2018] [Accepted: 06/27/2018] [Indexed: 12/11/2022]
Abstract
Many studies have demonstrated that mesencephalic astrocyte-derived neurotrophic factor (MANF) has been shown protective effects on neurotoxin based models of Parkinson's disease (PD). It still remains unclear whether MANF can rescue dopaminergic (DA) neurons in an α-synuclein model. Glial cell line-derived neurotrophic factor (GDNF) and its related neurturin (NRTN) can protect DA neurons in the neurotoxin but not α-synuclein animal models of PD, it failed in the clinical trials. Since α-synuclein model can better mimic the progression of human PD, in our study we overexpressed MANF specifically in DA neurons by using an α-synuclein Caenorhabditis elegans (C. elegans) model. Our results showed MANF alleviated progressive neuronal degeneration and prevented locomotion defects. Indeed, MANF can protect cilia of DA neurons at an early stage, suggested that MANF participated in the whole process of neuronal degeneration. Furthermore, we found MANF facilitated the removal of misfolded α-synuclein proteins and rescued the function of damaged DA neurons. By using RNAi approach, we inhibited ER stress and autophagy related genes and effects of MANF were decreased, which demonstrated ER stress and autophagy pathways were involved in the MANF-mediated neuroprotection. Our study suggests MANF exhibits potential as a neuroprotective agent for PD therapy.
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Affiliation(s)
- Zhuoyu Zhang
- Department of Neurology, Shanghai Tongji Hospital, Tongji University School of Medicine, 389 Xincun Road, Shanghai 200065, People's Republic of China
| | - Yijue Shen
- Department of Neurology, Shanghai Tongji Hospital, Tongji University School of Medicine, 389 Xincun Road, Shanghai 200065, People's Republic of China
| | - Hang Luo
- Department of Neurology, Shanghai Tongji Hospital, Tongji University School of Medicine, 389 Xincun Road, Shanghai 200065, People's Republic of China
| | - Fen Zhang
- School of Life Science and Technology, Tongji University, 1239 Siping Road, Shanghai 200092, People's Republic of China
| | - Dan Peng
- School of Life Science and Technology, Tongji University, 1239 Siping Road, Shanghai 200092, People's Republic of China
| | - Li Jing
- School of Life Science and Technology, Tongji University, 1239 Siping Road, Shanghai 200092, People's Republic of China
| | - Yuanyuan Wu
- School of Life Science and Technology, Tongji University, 1239 Siping Road, Shanghai 200092, People's Republic of China
| | - Xiaofei Xia
- School of Life Science and Technology, Tongji University, 1239 Siping Road, Shanghai 200092, People's Republic of China
| | - Yunping Song
- School of Life Science and Technology, Tongji University, 1239 Siping Road, Shanghai 200092, People's Republic of China
| | - Wei Li
- Department of Neurology, Shanghai Tongji Hospital, Tongji University School of Medicine, 389 Xincun Road, Shanghai 200065, People's Republic of China; School of Life Science and Technology, Tongji University, 1239 Siping Road, Shanghai 200092, People's Republic of China.
| | - Lingjing Jin
- Department of Neurology, Shanghai Tongji Hospital, Tongji University School of Medicine, 389 Xincun Road, Shanghai 200065, People's Republic of China.
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C/EBPβ Promotes STAT3 Expression and Affects Cell Apoptosis and Proliferation in Porcine Ovarian Granulosa Cells. Genes (Basel) 2018; 9:genes9060295. [PMID: 29899261 PMCID: PMC6026978 DOI: 10.3390/genes9060295] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2018] [Revised: 05/26/2018] [Accepted: 06/04/2018] [Indexed: 02/06/2023] Open
Abstract
Previous studies suggest that signal transducer and activator of transcription 3 (STAT3) and CCAAT/enhancer binding protein beta (C/EBPβ) play an essential role in ovarian granulosa cells (GCs) for mammalian follicular development. Several C/EBPβ putative binding sites were previously predicted on the STAT3 promoter in mammals. However, the molecular regulation of C/EBPβ on STAT3 and their effects on cell proliferation and apoptosis remain virtually unexplored in GCs. Using porcine GCs as a model, the 5′-deletion, luciferase report assay, mutation, chromatin immunoprecipitation, Annexin-V/PI staining and EdU assays were applied to investigate the molecular mechanism for C/EBPβ regulating the expression of STAT3 and their effects on the cell proliferation and apoptosis ability. We found that over and interfering with the expression of C/EBPβ significantly increased and decreased the messenger RNA (mRNA) and protein levels of STAT3, respectively. The dual luciferase reporter assay showed that C/EBPβ directly bound at −1397/−1387 of STAT3 to positively regulate the mRNA and protein expressions of STAT3. Both C/EBPβ and STAT3 were observed to inhibit cell apoptosis and promote cell proliferation. Furthermore, C/EBPβ might enhance the antiapoptotic and pro-proliferative effects of STAT3. These results would be of great insight in further exploring the molecular mechanism of C/EBPβ and STAT3 on the function of GCs and the development of ovarian follicles in mammals.
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Gao L, Xu W, Fan S, Li T, Zhao T, Ying G, Zheng J, Li J, Zhang Z, Yan F, Zhu Y, Chen G. MANF attenuates neuronal apoptosis and promotes behavioral recovery via Akt/MDM-2/p53 pathway after traumatic spinal cord injury in rats. Biofactors 2018; 44:369-386. [PMID: 29797541 DOI: 10.1002/biof.1433] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/20/2018] [Revised: 03/31/2018] [Accepted: 04/17/2018] [Indexed: 12/16/2022]
Abstract
The aim of this study was to investigate the potential effect and mechanism of action of MANF in attenuating neuronal apoptosis following t-SCI. A clip compressive model was used to induce a crush injury of the spinal cord in a total of 230 rats. The Basso, Beattie, and Bresnahan (BBB) score, spinal cord water content, and blood spinal cord barrier (BSCB) permeability were evaluated. The expression levels of MANF and its downstream proteins were examined by western blotting. Immunofluorescence staining of MANF, NeuN, GFAP, Iba-1, cleaved caspase-3, and TUNEL staining were also performed. Cells were counted in six randomly selected fields in the gray matter regions of the sections from two spinal cord sites (2 mm rostral and caudal to the epicenter of the injury) per sample. A cell-based mechanical injury model was also conducted using SH-SY5Y cells. Cell apoptosis and viability were assessed by flow cytometry, an MTT assay, and trypan blue staining. Subcellular structures were observed by transmission electron microscopy. MANF was mainly expressed in neurons. The expression levels of MANF, and its downstream target, p-Akt, were gradually increased and after t-SCI. Treatment with MANF increased Bcl-2 and decreased Bax and CC-3 levels; these effects were reversed on treatment with MK2206. The BBB score, spinal cord water content, and BSCB destruction were also ameliorated by MANF treatment. MANF decreases neuronal apoptosis and improves neurological function through Akt/MDM-2/p53 pathway after t-SCI. Therefore, MANF might be a potential treatment for patients with t-SCI.© 2018 BioFactors, 2018.
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Affiliation(s)
- Liansheng Gao
- Department of Neurosurgery, Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang, China
| | - Weilin Xu
- Department of Neurosurgery, Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang, China
| | - Shuangbo Fan
- Department of Neurosurgery, Ningbo Zhenhai Longsai Hospital, Zhenhai District, Ningbo, Zhejiang, China
| | - Tao Li
- Department of Neurosurgery, Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang, China
| | - Tengfei Zhao
- Department of Orthopedics, Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang, China
| | - Guangyu Ying
- Department of Neurosurgery, Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang, China
| | - Jingwei Zheng
- Department of Neurosurgery, Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang, China
| | - Jianru Li
- Department of Neurosurgery, Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang, China
| | - Zhongyuan Zhang
- Department of Neurosurgery, Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang, China
| | - Feng Yan
- Department of Neurosurgery, Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang, China
| | - Yongjian Zhu
- Department of Neurosurgery, Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang, China
| | - Gao Chen
- Department of Neurosurgery, Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang, China
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Sabino M, Carmelo VAO, Mazzoni G, Cappelli K, Capomaccio S, Ajmone-Marsan P, Verini-Supplizi A, Trabalza-Marinucci M, Kadarmideen HN. Gene co-expression networks in liver and muscle transcriptome reveal sex-specific gene expression in lambs fed with a mix of essential oils. BMC Genomics 2018; 19:236. [PMID: 29618337 PMCID: PMC5885410 DOI: 10.1186/s12864-018-4632-y] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2017] [Accepted: 03/27/2018] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND Essential oil (EO) dietary supplementation is a new strategy to improve animal health. EO compounds have antiparasitic, antimicrobial, antiviral, antimycotic, antioxidant and anti-inflammatory proprieties. Nutrigenomics investigations represent innovative approaches in understanding the relation between diet effect and gene expression related to the animal performance. Few nutrigenomics studies have used a high-throughput RNA-Sequencing (RNA-Seq) approach, despite great potential of RNA-Seq data in gene expression quantification and in co-expression network analyses. Our aim is to use the potential of RNA-Sequencing data in order to evaluate the effect of an EO supplementary diet on gene expression in both lamb liver and muscle. RESULTS Using a treatment and sex interaction model, 13 and 4 differentially expressed genes were identified in liver and muscle respectively. Sex-specific differentially expressed (DE) genes were identified in both sexes. Using network based analysis, different clusters of co-expressed genes that were highly correlated to the diet were detected in males vs. females, in agreement with DE analysis. A total of five regulatory genes in liver tissue associated to EO diet were identified: DNAJB9, MANF, UFM1, CTNNLA1 and NFX1. Our study reveals a sex-dependent effect of EO diet in both tissues, and an influence on the expression of genes mainly involved in immune, inflammatory and stress pathway. CONCLUSION Our analysis suggests a sex-dependent effect of the EO dietary supplementation on the expression profile of both liver and muscle tissues. We hypothesize that the presence of EOs could have beneficial effects on wellness of male lamb and further analyses are needed to understand the biological mechanisms behind the different effect of EO metabolites based on sex. Using lamb as a model for nutrigenomics studies, it could be interesting to investigate the effects of EO diets in other species and in humans.
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Affiliation(s)
- Marcella Sabino
- Dipartimento di Medicina Veterinaria, University of Perugia, Perugia, Italy
| | | | - Gianluca Mazzoni
- Department of Bio and Health Informatics, Technical University of Denmark, Kongens Lyngby, Copenhagen, Denmark
| | - Katia Cappelli
- Dipartimento di Medicina Veterinaria, University of Perugia, Perugia, Italy
| | - Stefano Capomaccio
- Dipartimento di Medicina Veterinaria, University of Perugia, Perugia, Italy
| | - Paolo Ajmone-Marsan
- Istituto di Zootecnica, Catholic University of the Sacred Heart, Piacenza, Italy
| | | | | | - Haja N Kadarmideen
- Department of Bio and Health Informatics, Technical University of Denmark, Kongens Lyngby, Copenhagen, Denmark.
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Rozas-Serri M, Peña A, Maldonado L. Transcriptomic profiles of post-smolt Atlantic salmon challenged with Piscirickettsia salmonis reveal a strategy to evade the adaptive immune response and modify cell-autonomous immunity. DEVELOPMENTAL AND COMPARATIVE IMMUNOLOGY 2018; 81:348-362. [PMID: 29288676 DOI: 10.1016/j.dci.2017.12.023] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/13/2017] [Revised: 12/23/2017] [Accepted: 12/23/2017] [Indexed: 06/07/2023]
Abstract
Piscirickettsiosis is the main bacterial disease affecting the Chilean salmon farming industry and is responsible for high economic losses. The development of effective strategies to control piscirickettsiosis has been limited in part by insufficient knowledge of the host response. The aim of this study was to use RNA sequencing to describe the transcriptional profiles of the responses of post-smolt Atlantic salmon infected with LF-89-like or EM-90-like Piscirickettsia salmonis. Enrichment and pathway analyses of the differentially expressed genes revealed several central signatures following infection, including positive regulation of DC-SIGN and TLR5 signalling, which converged at the NF-κB level to modulate the pro-inflammatory cytokine response, particularly in the PS-EM-90-infected fish. P. salmonis induced an IFN-inducible response (e.g., IRF-1 and GBP-1) but inhibited the humoral and cell-mediated immune responses. P. salmonis induced significant cytoskeletal reorganization but decreased lysosomal protease activity and caused the degradation of proteins associated with cellular stress. Infection with these isolates also delayed protein transport, antigen processing, vesicle trafficking and autophagy. Both P. salmonis isolates promoted cell survival and proliferation and inhibited apoptosis. Both groups of Trojan fish used similar pathways to modulate the immune response at 5 dpi, but the transcriptomic profiles in the head kidneys of the cohabitant fish infected with PS-LF-89 and PS-MS-90 were relatively different at day 35 post-infection of the Trojan fish, probably due to the different degree of pathogenicity of each isolate. Our study showed the most important biological mechanisms used by P. salmonis, regardless of the isolate, to evade the immune response, maintain the viability of host cells and increase intracellular replication and persistence at the infection site. These results improve the understanding of the mechanisms by which P. salmonis interacts with its host and may serve as a basis for the development of effective strategies for the control of piscirickettsiosis.
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Affiliation(s)
| | - Andrea Peña
- Pathovet Laboratory Ltd., Puerto Montt, Chile.
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74
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Zhang J, Xu M, Gao H, Guo JC, Guo YL, Zou M, Wu XF. Two protein-coding genes act as a novel clinical signature to predict prognosis in patients with ovarian serous cystadenocarcinoma. Oncol Lett 2018; 15:3669-3675. [PMID: 29456732 PMCID: PMC5795895 DOI: 10.3892/ol.2018.7778] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2016] [Accepted: 10/18/2017] [Indexed: 02/05/2023] Open
Abstract
Ovarian cancer is the seventh most common type of cancer and the eighth most common cause of cancer-associated mortality among women. A number of studies have hypothesized that the expression status of certain genes may be used to predict prognosis in ovarian cancer. In the present study, the RNA expression data from next-generation sequencing and the clinical information of 413 patients from The Cancer Genome Atlas dataset was downloaded to identify the association between gene-expression level and the survival time of the patients with ovarian serous cystadenocarcinoma. A five-gene model was predicted to be significantly associated with patient survival in ovarian serous cystadenocarcinoma by using random survival forests variable hunting algorithm and Cox analysis. A total of two genes, mesencephalic astrocyte-derived neurotrophic factor and dedicator of cytokinesis 11, of the predicted five genes demonstrated positive expression in the ovarian serous cystadenocarcinoma cancer tissues by polymerase chain reaction analysis. Kaplan-Meier and Receiver Operating Characteristic analysis confirmed that the model of the two genes exhibited high sensitivity and specificity to predict the prognostic survival of patients. In conclusion, the expression of the two genes in the two-gene model was associated with the prognostic outcomes of patients with ovarian serous cystadenocarcinoma; the model demonstrated potential as a novel prognostic indicator, which may have important clinical significance.
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Affiliation(s)
- Jue Zhang
- Department of Gynecology, Maternal and Child Health Hospital of Hubei Province, Wuhan, Hubei 430070, P.R. China
| | - Meng Xu
- Department of Gynecology, Maternal and Child Health Hospital of Hubei Province, Wuhan, Hubei 430070, P.R. China
| | - Han Gao
- Department of Gynecology, Maternal and Child Health Hospital of Hubei Province, Wuhan, Hubei 430070, P.R. China
| | - Jin-Chen Guo
- Shantou University Medical College, Shantou, Guangdong 515041, P.R. China
| | - Yu-Lin Guo
- Department of Gynecology, Maternal and Child Health Hospital of Hubei Province, Wuhan, Hubei 430070, P.R. China
| | - Miao Zou
- Department of Gynecology, Maternal and Child Health Hospital of Hubei Province, Wuhan, Hubei 430070, P.R. China
| | - Xu-Feng Wu
- Department of Gynecology, Maternal and Child Health Hospital of Hubei Province, Wuhan, Hubei 430070, P.R. China
- Correspondence to: Dr Xu-Feng Wu, Department of Gynecology, Maternal and Child Health Hospital of Hubei Province, 745 Wuluo Road, Wuhan, Hubei 430070, P.R. China, E-mail:
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75
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Guo J, Cui Y, Liu Q, Yang Y, Li Y, Weng L, Tang B, Jin P, Li XJ, Yang S, Li S. Piperine ameliorates SCA17 neuropathology by reducing ER stress. Mol Neurodegener 2018; 13:4. [PMID: 29378605 PMCID: PMC5789626 DOI: 10.1186/s13024-018-0236-x] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2017] [Accepted: 01/17/2018] [Indexed: 12/15/2022] Open
Abstract
Background Spinocerebellar ataxia 17 (SCA17) belongs to the family of neurodegenerative diseases caused by polyglutamine (polyQ) expansion. In SCA17, polyQ expansion occurs in the TATA box binding protein (TBP) and leads to the misfolding of TBP and the preferential degeneration in the cerebellar Purkinje neurons. Currently there is no effective treatment for SCA17. Mesencephalic astrocyte-derived neurotrophic factor (MANF) is a recently identified neurotrophic factor, and increasing MANF expression ameliorated SCA17 neuropathology in TBP-105Q knock-in (KI) mouse model, indicating that MANF could be a therapeutic target for treating SCA17. Methods In this study, we screened a collection of 2000 FDA-approved chemicals using a stable cell line expressing luciferase reporter, which is driven by MANF promoter. We identified several potential candidates that can induce the expression of MANF. Of these inducers, piperine is an agent that potently induces the luciferase expression or MANF expression. Results Addition of piperine in both cellular and mouse models of SCA17 alleviated toxicity caused by mutant TBP. Although mutant TBP is primarily localized in the nuclei, the polyQ expansion in TBP is able to induce ER stress, suggesting that nuclear misfolded proteins can also elicit ER stress as cytoplasmic misfolded proteins do. Moreover, piperine plays its protective role by reducing toxicity caused by the ER stress. Conclusion Our study established piperine as a MANF-based therapeutic agent for ER stress-related neuropathology in SCA17.
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Affiliation(s)
- Jifeng Guo
- Department of Neurology and National Clinical Research Center for Geriatric Disorder, Xiangya Hospital, Central South University, Changsha, Hunan, 410008, China.,Department of Human Genetics, Emory University School of Medicine, 615 Michael Street, Atlanta, GA, 30322, USA
| | - Yiting Cui
- Department of Neurology and National Clinical Research Center for Geriatric Disorder, Xiangya Hospital, Central South University, Changsha, Hunan, 410008, China.,Department of Human Genetics, Emory University School of Medicine, 615 Michael Street, Atlanta, GA, 30322, USA
| | - Qiong Liu
- Department of Neurology and National Clinical Research Center for Geriatric Disorder, Xiangya Hospital, Central South University, Changsha, Hunan, 410008, China.,Department of Human Genetics, Emory University School of Medicine, 615 Michael Street, Atlanta, GA, 30322, USA
| | - Yang Yang
- Department of Neurology and National Clinical Research Center for Geriatric Disorder, Xiangya Hospital, Central South University, Changsha, Hunan, 410008, China.,Department of Human Genetics, Emory University School of Medicine, 615 Michael Street, Atlanta, GA, 30322, USA
| | - Yujing Li
- Department of Human Genetics, Emory University School of Medicine, 615 Michael Street, Atlanta, GA, 30322, USA
| | - Ling Weng
- Department of Neurology and National Clinical Research Center for Geriatric Disorder, Xiangya Hospital, Central South University, Changsha, Hunan, 410008, China
| | - Beisha Tang
- Department of Neurology and National Clinical Research Center for Geriatric Disorder, Xiangya Hospital, Central South University, Changsha, Hunan, 410008, China
| | - Peng Jin
- Department of Human Genetics, Emory University School of Medicine, 615 Michael Street, Atlanta, GA, 30322, USA
| | - Xiao-Jiang Li
- Department of Human Genetics, Emory University School of Medicine, 615 Michael Street, Atlanta, GA, 30322, USA.,GHM Institute of CNS Regeneration, Jinan University, Guangzhou, 510631, China
| | - Su Yang
- Department of Human Genetics, Emory University School of Medicine, 615 Michael Street, Atlanta, GA, 30322, USA.
| | - Shihua Li
- Department of Neurology and National Clinical Research Center for Geriatric Disorder, Xiangya Hospital, Central South University, Changsha, Hunan, 410008, China. .,Department of Human Genetics, Emory University School of Medicine, 615 Michael Street, Atlanta, GA, 30322, USA.
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76
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Zhang J, Tong W, Sun H, Jiang M, Shen Y, Liu Y, Gu H, Guo J, Fang J, Jin L. Nrf2-mediated neuroprotection by MANF against 6-OHDA-induced cell damage via PI3K/AKT/GSK3β pathway. Exp Gerontol 2017; 100:77-86. [DOI: 10.1016/j.exger.2017.10.021] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2017] [Revised: 10/14/2017] [Accepted: 10/23/2017] [Indexed: 01/13/2023]
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77
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Kim Y, Park SJ, Chen YM. Mesencephalic astrocyte-derived neurotrophic factor (MANF), a new player in endoplasmic reticulum diseases: structure, biology, and therapeutic roles. Transl Res 2017; 188:1-9. [PMID: 28719799 PMCID: PMC5601018 DOI: 10.1016/j.trsl.2017.06.010] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/04/2017] [Revised: 06/20/2017] [Accepted: 06/23/2017] [Indexed: 02/06/2023]
Abstract
Mesencephalic astrocyte-derived neurotrophic factor (MANF), a newly identified 18-kDa soluble protein, localizes to the luminal endoplasmic reticulum (ER), whose stress can stimulate MANF expression and secretion. In Drosophila and zebrafish, MANF regulates dopaminergic neuron development. In contrast, in mice, MANF deficiency leads to diabetes and activation of the unfolded protein response. Recent studies in rodent models have demonstrated that MANF mitigates diabetes, exerts neurotrophic function in neurodegenerative disease, protects cardiomyocytes and neurons in myocardial infarction and cerebral ischemia, respectively, and promotes immune cell phenotype switch from proinflammatory macrophages to prorepair anti-inflammatory macrophages. The cytoprotective mechanisms of MANF on ER stress are currently under active investigation. In addition, for the first time, we have discovered that MANF can potentially serve as a urinary ER stress biomarker in ER stress-mediated kidney disease. These studies have underscored the diagnostic and therapeutic importance of MANF in ER diseases.
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Affiliation(s)
- Yeawon Kim
- Division of Nephrology, Department of Internal Medicine, Washington University School of Medicine, St. Louis, Mo
| | - Sun-Ji Park
- Division of Nephrology, Department of Internal Medicine, Washington University School of Medicine, St. Louis, Mo
| | - Ying Maggie Chen
- Division of Nephrology, Department of Internal Medicine, Washington University School of Medicine, St. Louis, Mo.
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78
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MANF Promotes Differentiation and Migration of Neural Progenitor Cells with Potential Neural Regenerative Effects in Stroke. Mol Ther 2017; 26:238-255. [PMID: 29050872 PMCID: PMC5763030 DOI: 10.1016/j.ymthe.2017.09.019] [Citation(s) in RCA: 62] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2017] [Revised: 08/31/2017] [Accepted: 09/18/2017] [Indexed: 01/05/2023] Open
Abstract
Cerebral ischemia activates endogenous reparative processes, such as increased proliferation of neural stem cells (NSCs) in the subventricular zone (SVZ) and migration of neural progenitor cells (NPCs) toward the ischemic area. However, this reparative process is limited because most of the NPCs die shortly after injury or are unable to arrive at the infarct boundary. In this study, we demonstrate for the first time that endogenous mesencephalic astrocyte-derived neurotrophic factor (MANF) protects NSCs against oxygen-glucose-deprivation-induced injury and has a crucial role in regulating NPC migration. In NSC cultures, MANF protein administration did not affect growth of cells but triggered neuronal and glial differentiation, followed by activation of STAT3. In SVZ explants, MANF overexpression facilitated cell migration and activated the STAT3 and ERK1/2 pathway. Using a rat model of cortical stroke, intracerebroventricular injections of MANF did not affect cell proliferation in the SVZ, but promoted migration of doublecortin (DCX)+ cells toward the corpus callosum and infarct boundary on day 14 post-stroke. Long-term infusion of MANF into the peri-infarct zone increased the recruitment of DCX+ cells in the infarct area. In conclusion, our data demonstrate a neuroregenerative activity of MANF that facilitates differentiation and migration of NPCs, thereby increasing recruitment of neuroblasts in stroke cortex.
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79
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Mesencephalic astrocyte-derived neurotrophic factor and its role in nervous system disease. Neurol Sci 2017; 38:1741-1746. [DOI: 10.1007/s10072-017-3042-2] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2016] [Accepted: 06/19/2017] [Indexed: 12/22/2022]
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80
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Lindström R, Lindholm P, Palgi M, Saarma M, Heino TI. In vivo screening reveals interactions between Drosophila Manf and genes involved in the mitochondria and the ubiquinone synthesis pathway. BMC Genet 2017; 18:52. [PMID: 28578657 PMCID: PMC5455201 DOI: 10.1186/s12863-017-0509-3] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2016] [Accepted: 05/08/2017] [Indexed: 12/21/2022] Open
Abstract
BACKGROUND Mesencephalic Astrocyte-derived Neurotrophic Factor (MANF) and Cerebral Dopamine Neurotrophic Factor (CDNF) form an evolutionarily conserved family of neurotrophic factors. Orthologues for MANF/CDNF are the only neurotrophic factors as yet identified in invertebrates with conserved amino acid sequence. Previous studies indicate that mammalian MANF and CDNF support and protect brain dopaminergic system in non-cell-autonomous manner. However, MANF has also been shown to function intracellularly in the endoplasmic reticulum. To date, the knowledge on the interacting partners of MANF/CDNF and signaling pathways they activate is rudimentary. Here, we have employed the Drosophila genetics to screen for potential interaction partners of Drosophila Manf (DmManf) in vivo. RESULTS We first show that DmManf plays a role in the development of Drosophila wing. We exploited this function by using Drosophila UAS-RNAi lines and discovered novel genetic interactions of DmManf with genes known to function in the mitochondria. We also found evidence of an interaction between DmManf and the Drosophila homologue encoding Ku70, the closest structural homologue of SAP domain of mammalian MANF. CONCLUSIONS In addition to the previously known functions of MANF/CDNF protein family, DmManf also interacts with mitochondria-related genes. Our data supports the functional importance of these evolutionarily significant proteins and provides new insights for the future studies.
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Affiliation(s)
- Riitta Lindström
- Department of Biosciences, University of Helsinki, FI-00014 Helsinki, Finland
- Current affiliation: Institute of Biotechnology, University of Helsinki, Helsinki, Finland
| | - Päivi Lindholm
- Institute of Biotechnology, University of Helsinki, FI-00014 Helsinki, Finland
| | - Mari Palgi
- Department of Chemistry and Biotechnology, Tallinn University of Technology, EE-12618 Tallinn, Estonia
| | - Mart Saarma
- Institute of Biotechnology, University of Helsinki, FI-00014 Helsinki, Finland
| | - Tapio I. Heino
- Department of Biosciences, University of Helsinki, FI-00014 Helsinki, Finland
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Tang T, Li Y, Jiao Q, Du X, Jiang H. Cerebral Dopamine Neurotrophic Factor: A Potential Therapeutic Agent for Parkinson's Disease. Neurosci Bull 2017; 33:568-575. [PMID: 28337696 DOI: 10.1007/s12264-017-0123-4] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2016] [Accepted: 12/18/2016] [Indexed: 11/27/2022] Open
Abstract
The application of neurotrophic factors (NTFs) is a promising therapeutic strategy for neurodegenerative disorders such as Parkinson's disease (PD). Many NTFs have been reported to enhance the survival, regeneration, and differentiation of neurons and to induce synaptic plasticity. However, because of their potential side-effects and low efficacy after clinical administration, more potent treatments for neurodegenerative disorders are being sought. Cerebral dopamine neurotrophic factor (CDNF), a newly-identified NTF homologous to mesencephalic astrocyte-derived NTF, is structurally and functionally different from other NTFs, providing new hope especially for PD patients. In various animal models of PD, CDNF is efficient in protecting and repairing dopaminergic neurons, and it inhibits endoplasmic reticulum stress, neuroinflammation, and apoptosis. Recent progress in all facets of CDNF research has enabled researchers to better understand its beneficial effects in the treatment of PD.
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Affiliation(s)
- Tingting Tang
- Department of Physiology, Shandong Provincial Key Laboratory of Pathogenesis and Prevention of Neurological Disorders, Shandong Provincial Collaborative Innovation Center for Neurodegenerative Disorders, State Key Disciplines: Physiology, Medical College of Qingdao University, Qingdao, 266071, China
| | - Yong Li
- Department of Physiology, Shandong Provincial Key Laboratory of Pathogenesis and Prevention of Neurological Disorders, Shandong Provincial Collaborative Innovation Center for Neurodegenerative Disorders, State Key Disciplines: Physiology, Medical College of Qingdao University, Qingdao, 266071, China
| | - Qian Jiao
- Department of Physiology, Shandong Provincial Key Laboratory of Pathogenesis and Prevention of Neurological Disorders, Shandong Provincial Collaborative Innovation Center for Neurodegenerative Disorders, State Key Disciplines: Physiology, Medical College of Qingdao University, Qingdao, 266071, China
| | - Xixun Du
- Department of Physiology, Shandong Provincial Key Laboratory of Pathogenesis and Prevention of Neurological Disorders, Shandong Provincial Collaborative Innovation Center for Neurodegenerative Disorders, State Key Disciplines: Physiology, Medical College of Qingdao University, Qingdao, 266071, China
| | - Hong Jiang
- Department of Physiology, Shandong Provincial Key Laboratory of Pathogenesis and Prevention of Neurological Disorders, Shandong Provincial Collaborative Innovation Center for Neurodegenerative Disorders, State Key Disciplines: Physiology, Medical College of Qingdao University, Qingdao, 266071, China.
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82
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Hao F, Yang C, Chen SS, Wang YY, Zhou W, Hao Q, Lu T, Hoffer B, Zhao LR, Duan WM, Xu QY. Long-term protective effects of AAV9-mesencephalic astrocyte-derived neurotrophic factor gene transfer in parkinsonian rats. Exp Neurol 2017; 291:120-133. [PMID: 28131727 DOI: 10.1016/j.expneurol.2017.01.008] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2016] [Revised: 12/27/2016] [Accepted: 01/17/2017] [Indexed: 12/29/2022]
Abstract
Intrastriatal injection of mesencephalic astrocyte-derived neurotrophic factor (MANF) protein has been shown to provide neuroprotective and neurorestorative effects in a 6-hydroxydopamine (6-OHDA) - lesioned rat model of Parkinson's disease. Here, we used an adeno-associated virus serotype 9 (AAV9) vector to deliver the human MANF (hMANF) gene into the rat striatum 10days after a 6-OHDA lesion to examine long-term effects of hMANF on nigral dopaminergic neurons and mechanisms underlying MANF neuroprotection. Intrastriatal injection of AAV9-hMANF vectors led to a robust and widespread expression of the hMANF gene in the injected striatum up to 24weeks. Increased levels of hMANF protein were also detected in the ipsilateral substantia nigra. The hMANF gene transfer promoted the survival of nigral dopaminergic neurons, regeneration of striatal dopaminergic fibers and an upregulation of striatal dopamine levels, resulting in a long-term improvement of rotational behavior up to 16weeks after viral injections. By using SH-SY5Y cells, we found that intra- and extracellular application of MANF protected cells against 6-OHDA-induced toxicity via inhibiting the endoplasmic reticulum stress and activating the PI3K/Akt/mTOR pathway. Our results suggest that AAV9-mediated hMANF gene delivery into the striatum exerts long-term neuroprotective and neuroregenerative effects on the nigrostriatal dopaminergic system in parkinsonian rats, and provide insights into mechanisms responsible for MANF neuroprotection.
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Affiliation(s)
- Fei Hao
- Department of Anatomy, Capital Medical University, Beijing 100069, China
| | - Chun Yang
- Department of Anatomy, Capital Medical University, Beijing 100069, China
| | - Sha-Sha Chen
- Department of Anatomy, Capital Medical University, Beijing 100069, China
| | - Yan-Yan Wang
- Department of Neurobiology, Capital Medical University, Beijing 100069, China
| | - Wei Zhou
- Department of Anatomy, Capital Medical University, Beijing 100069, China
| | - Qiang Hao
- Department of Anatomy, Capital Medical University, Beijing 100069, China
| | - Tao Lu
- Department of Anatomy, Capital Medical University, Beijing 100069, China
| | - Barry Hoffer
- Department of Neurosurgery, Case Western Reserve University, Cleveland, OH 44106, USA
| | - Li-Ru Zhao
- Department of Neurosurgery, SUNY Upstate Medical University, Syracuse, NY 13210, USA
| | - Wei-Ming Duan
- Department of Anatomy, Capital Medical University, Beijing 100069, China; Center of Parkinson's Disease, Beijing Institute for Brain Disorders, Beijing 100069, China; Department of Biomedical Sciences, Ohio University Heritage College of Osteopathic Medicine, Cleveland, OH 44122, USA.
| | - Qun-Yuan Xu
- Department of Anatomy, Capital Medical University, Beijing 100069, China; Department of Neurobiology, Capital Medical University, Beijing 100069, China; Center of Neural Injury and Repair, Beijing Institute for Brain Disorders, Beijing 100069, China; Beijing Center of Neural Regeneration and Repair, Beijing 100069, China; Key Laboratory for Neurodegenerative Diseases of the Ministry of Education, Beijing 100069, China.
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83
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Feng L, Zhang J, Zhu N, Ding Q, Zhang X, Yu J, Qiang W, Zhang Z, Ma Y, Huang D, Shen Y, Fang S, Yu Y, Wang H, Shen Y. Ubiquitin ligase SYVN1/HRD1 facilitates degradation of the SERPINA1 Z variant/α-1-antitrypsin Z variant via SQSTM1/p62-dependent selective autophagy. Autophagy 2017; 13:686-702. [PMID: 28121484 PMCID: PMC5388218 DOI: 10.1080/15548627.2017.1280207] [Citation(s) in RCA: 42] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
SERPINA1/AAT/α-1-antitrypsin (serpin family A member 1) deficiency (SERPINA1/ AAT-D) is an autosomal recessive disorder characterized by the retention of misfolded SERPINA1/AAT in the endoplasmic reticulum (ER) of hepatocytes and a significant reduction of serum SERPINA1/AAT level. The Z variant of SERPINA1/AAT, containing a Glu342Lys (E342K) mutation (SERPINA1E342K/ATZ), the most common form of SERPINA1/AAT-D, is prone to misfolding and polymerization, which retains it in the ER of hepatocytes and leads to liver injury. Both proteasome and macroautophagy/autophagy pathways are responsible for disposal of SERPINA1E342K/ATZ after it accumulates in the ER. However, the mechanisms by which SERPINA1E342K/ATZ is selectively degraded by autophagy remain unknown. Here, we showed that ER membrane-spanning ubiquitin ligase (E3) SYVN1/HRD1 enhances the degradation of SERPINA1E342K/ATZ through the autophagy-lysosome pathway. We found that SYVN1 promoted SERPINA1E342K/ATZ, especially Triton X 100-insoluble SERPINA1E342K/ATZ clearance. However, the effect of SYVN1 in SERPINA1E342K/ATZ clearance was impaired after autophagy inhibition, as well as in autophagy-related 5 (atg5) knockout cells. On the contrary, autophagy induction enhanced SYVN1-mediated SERPINA1E342K/ATZ degradation. Further study showed that SYVN1 mediated SERPINA1E342K/ATZ ubiquitination, which is required for autophagic degradation of SERPINA1E342K/ATZ by promoting the interaction between SERPINA1E342K/ATZ and SQSTM1/p62 for formation of the autophagy complex. Interestingly, SYVN1-mediated lysine 48 (K48)-linked polyubiquitin chains that conjugated onto SERPINA1E342K/ATZ might predominantly bind to the ubiquitin-associated (UBA) domain of SQSTM1 and couple the ubiquitinated SERPINA1E342K/ATZ to the lysosome for degradation. In addition, autophagy inhibition attenuated the suppressive effect of SYVN1 on SERPINA1E342K/ATZ cytotoxicity, and the autophagy inducer rapamycin enhanced the suppressive effect of SYVN1 on SERPINA1E342K/ATZ-induced cell apoptosis. Therefore, this study proved that SYVN1 enhances SERPINA1E342K/ATZ degradation through SQSTM1-dependent autophagy and attenuates SERPINA1E342K/ATZ cytotoxicity.
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Affiliation(s)
- Lijie Feng
- a School of Basic Medical Sciences , Anhui Medical University , Hefei, Anhui , China.,b Institute of Biopharmaceuticals, Anhui Medical University , Hefei, Anhui , China
| | - Jin Zhang
- b Institute of Biopharmaceuticals, Anhui Medical University , Hefei, Anhui , China
| | - Na Zhu
- b Institute of Biopharmaceuticals, Anhui Medical University , Hefei, Anhui , China.,c The 4th Affiliated Hospital, Anhui Medical University , Hefei, Anhui , China
| | - Qian Ding
- a School of Basic Medical Sciences , Anhui Medical University , Hefei, Anhui , China.,b Institute of Biopharmaceuticals, Anhui Medical University , Hefei, Anhui , China
| | - Xiaojie Zhang
- a School of Basic Medical Sciences , Anhui Medical University , Hefei, Anhui , China.,b Institute of Biopharmaceuticals, Anhui Medical University , Hefei, Anhui , China
| | - Jishuang Yu
- a School of Basic Medical Sciences , Anhui Medical University , Hefei, Anhui , China.,b Institute of Biopharmaceuticals, Anhui Medical University , Hefei, Anhui , China
| | - Weimin Qiang
- a School of Basic Medical Sciences , Anhui Medical University , Hefei, Anhui , China.,b Institute of Biopharmaceuticals, Anhui Medical University , Hefei, Anhui , China
| | - Zhetao Zhang
- a School of Basic Medical Sciences , Anhui Medical University , Hefei, Anhui , China.,b Institute of Biopharmaceuticals, Anhui Medical University , Hefei, Anhui , China
| | - Yuyang Ma
- a School of Basic Medical Sciences , Anhui Medical University , Hefei, Anhui , China.,b Institute of Biopharmaceuticals, Anhui Medical University , Hefei, Anhui , China
| | - Dake Huang
- a School of Basic Medical Sciences , Anhui Medical University , Hefei, Anhui , China
| | - Yujun Shen
- a School of Basic Medical Sciences , Anhui Medical University , Hefei, Anhui , China.,b Institute of Biopharmaceuticals, Anhui Medical University , Hefei, Anhui , China
| | - Shengyun Fang
- a School of Basic Medical Sciences , Anhui Medical University , Hefei, Anhui , China.,b Institute of Biopharmaceuticals, Anhui Medical University , Hefei, Anhui , China.,d Center for Biomedical Engineering and Technology , University of Maryland , Baltimore , MD , USA
| | - Yifan Yu
- e Actuarial Science, School of Continuing Education , Columbia University , New York , NY , USA
| | - Haiping Wang
- a School of Basic Medical Sciences , Anhui Medical University , Hefei, Anhui , China.,b Institute of Biopharmaceuticals, Anhui Medical University , Hefei, Anhui , China
| | - Yuxian Shen
- a School of Basic Medical Sciences , Anhui Medical University , Hefei, Anhui , China.,b Institute of Biopharmaceuticals, Anhui Medical University , Hefei, Anhui , China
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84
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Gao FJ, Zhang SH, Li TT, Wu JH, Wu Q. Expression and Distribution of Mesencephalic Astrocyte-Derived Neurotrophic Factor in the Retina and Optic Nerve. Front Hum Neurosci 2017; 10:686. [PMID: 28154531 PMCID: PMC5243802 DOI: 10.3389/fnhum.2016.00686] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2016] [Accepted: 12/23/2016] [Indexed: 02/02/2023] Open
Abstract
Mesencephalic astrocyte-derived neurotrophic factor (MANF), otherwise named Arginine-Rich, Mutated in Early-stage Tumors (ARMET), is a secretory endoplasmic reticulum stress (ERS) protein that is widely expressed in mammalian tissues. To date, little is known about the distribution and expression of MANF in the retina and optic nerve (ON). Therefore, we studied the expression and distribution of MANF in the ON and retina by real-time PCR, immunofluorescence staining and western blotting. Results from rat and mouse were highly consistent in the retina. MANF was detected in both tissues in rat, wherein it was principally localized to the ganglion cell layer (GCL), followed by the inner nuclear layer (INL). The MANF protein levels in the rat retina were 3.33-fold higher than in the rat ON. Additionally, MANF was robustly expressed by retinal ganglion cells (RGCs) in the human retina. In human ON, MANF was partially co-localized with glial fibrillary acidic protein (GFAP), suggesting that it was not restricted to astrocytes. In vitro studies confirmed that MANF could be robustly expressed in RGCs and was found principally within the cytoplasm. Hypoxia can stimulate up-regulation by of MANF expression over time, suggesting that MANF may play a vital role in the functional regulation of RGCs both in health and disease. We believe that the present study improves our understanding of the distribution and expression of MANF in the retina and ON and could help in further analysis of its interact and correlate with the relevant ophthalmic diseases.
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Affiliation(s)
- Feng-Juan Gao
- Department of Ophthalmology, Shanghai Jiao Tong University Affiliated Sixth People's HospitalShanghai, China
| | - Sheng-Hai Zhang
- Eye & ENT Hospital, State Key Laboratory of Medical Neurobiology, Institutes of Brain Science and Collaborative Innovation Center for Brain Science, Shanghai Medical College, Fudan UniversityShanghai, China
- Shanghai Key Laboratory of Visual Impairment and RestorationShanghai, China
- Key Laboratory of Myopia, Ministry of Health, Fudan UniversityShanghai, China
| | - Ting-Ting Li
- Department of Ophthalmology, Shanghai Jiao Tong University Affiliated Sixth People's HospitalShanghai, China
| | - Ji-Hong Wu
- Eye & ENT Hospital, State Key Laboratory of Medical Neurobiology, Institutes of Brain Science and Collaborative Innovation Center for Brain Science, Shanghai Medical College, Fudan UniversityShanghai, China
- Shanghai Key Laboratory of Visual Impairment and RestorationShanghai, China
- Key Laboratory of Myopia, Ministry of Health, Fudan UniversityShanghai, China
| | - Qiang Wu
- Department of Ophthalmology, Shanghai Jiao Tong University Affiliated Sixth People's HospitalShanghai, China
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85
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Mesencephalic astrocyte-derived neurotrophic factor alleviated 6-OHDA-induced cell damage via ROS-AMPK/mTOR mediated autophagic inhibition. Exp Gerontol 2017; 89:45-56. [PMID: 28099881 DOI: 10.1016/j.exger.2017.01.010] [Citation(s) in RCA: 44] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2016] [Revised: 01/08/2017] [Accepted: 01/13/2017] [Indexed: 11/20/2022]
Abstract
Autophagy and apoptosis are commonly involved in the dopaminergic neuron damage in the pathogenesis of Parkinson's disease. Recently, the autophagy pathway is thought to be critical to the process of PD. Therefore, the regulation of autophagy may be a potential strategy for PD treatment. Mesencephalic astrocyte-derived neurotrophic factor (MANF) has been reported to have neuroprotective effects through anti-apoptosis, anti-oxidative, and anti-inflammatory mechanisms in PD. In this study, we investigated the role of autophagy system in MANF-mediated neuroprotection against 6-hydroxydopamine (6-OHDA)-induced neurotoxicity. Our results showed that MANF protected SH-SY5Y cells against 6-OHDA-induced cell viability decrease and apoptosis by inhibiting autophagy. Mitochondrion damage and energetic dysfunction triggered by reactive oxidative stress (ROS) accumulation were also alleviated by MANF treatment. Furthermore, MANF downregulated phosphorylation of AMP-activated protein kinase (AMPK), a cellular energy sensor and regulator, but upregulated phosphorylation of Mammalian target of rapamycin (mTOR) under energy depletion conditions, indicating AMPK/mTOR signaling pathway is involved in the autophagic inhibition of MANF. These results suggest that autophagic inhibition provides protective mechanism of MANF in 6-OHDA-induced SH-SY5Y cell death and this inhibition is associated with AMPK/mTOR pathway.
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86
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Wang XY, Song MM, Bi SX, Shen YJ, Shen YX, Yu YQ. MRI Dynamically Evaluates the Therapeutic Effect of Recombinant Human MANF on Ischemia/Reperfusion Injury in Rats. Int J Mol Sci 2016; 17:ijms17091476. [PMID: 27608005 PMCID: PMC5037754 DOI: 10.3390/ijms17091476] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2016] [Revised: 08/25/2016] [Accepted: 08/29/2016] [Indexed: 12/14/2022] Open
Abstract
As an endoplasmic reticulum (ER) stress-inducible protein, mesencephalic astrocyte-derived neurotrophic factor (MANF) has been proven to protect dopaminergic neurons and nondopaminergic cells. Our previous studies had shown that MANF protected against ischemia/reperfusion injury. Here, we developed a magnetic resonance imaging (MRI) technology to dynamically evaluate the therapeutic effects of MANF on ischemia/reperfusion injury. We established a rat focal ischemic model by using middle cerebral artery occlusion (MCAO). MRI was performed to investigate the dynamics of lesion formation. MANF protein was injected into the right lateral ventricle at 3 h after reperfusion following MCAO for 90 min, when the obvious lesion firstly appeared according to MRI investigation. T2-weighted imaging for evaluating the therapeutic effects of MANF protein was performed in ischemia/reperfusion injury rats on Days 1, 2, 3, 5, and 7 post-reperfusion combined with histology methods. The results indicated that the administration of MANF protein at the early stage after ischemia/reperfusion injury decreased the mortality, improved the neurological function, reduced the cerebral infarct volume, and alleviated the brain tissue injury. The findings collected from MRI are consistent with the morphological and pathological changes, which suggest that MRI is a useful technology for evaluating the therapeutic effects of drugs.
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Affiliation(s)
- Xian-Yun Wang
- The First Affiliated Hospital, Anhui Medical University, 218 Jixi Road, Hefei 230032, China.
| | - Meng-Meng Song
- School of Basic Medical Sciences, Anhui Medical University, 81 Meishan Road, Hefei 230032, China.
- Biopharmaceutical Institute, Anhui Medical University, 81 Meishan Road, Hefei 230032, China.
| | - Si-Xing Bi
- The First Affiliated Hospital, Anhui Medical University, 218 Jixi Road, Hefei 230032, China.
| | - Yu-Jun Shen
- School of Basic Medical Sciences, Anhui Medical University, 81 Meishan Road, Hefei 230032, China.
- Biopharmaceutical Institute, Anhui Medical University, 81 Meishan Road, Hefei 230032, China.
| | - Yu-Xian Shen
- School of Basic Medical Sciences, Anhui Medical University, 81 Meishan Road, Hefei 230032, China.
- Biopharmaceutical Institute, Anhui Medical University, 81 Meishan Road, Hefei 230032, China.
| | - Yong-Qiang Yu
- The First Affiliated Hospital, Anhui Medical University, 218 Jixi Road, Hefei 230032, China.
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87
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Lindahl M, Saarma M, Lindholm P. Unconventional neurotrophic factors CDNF and MANF: Structure, physiological functions and therapeutic potential. Neurobiol Dis 2016; 97:90-102. [PMID: 27425895 DOI: 10.1016/j.nbd.2016.07.009] [Citation(s) in RCA: 124] [Impact Index Per Article: 15.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2016] [Revised: 06/29/2016] [Accepted: 07/13/2016] [Indexed: 12/30/2022] Open
Abstract
Cerebral dopamine neurotrophic factor (CDNF) and mesencephalic astrocyte-derived neurotrophic factor (MANF) promote the survival of midbrain dopaminergic neurons which degenerate in Parkinson's disease (PD). However, CDNF and MANF are structurally and functionally clearly distinct from the classical, target-derived neurotrophic factors (NTFs) that are solely secreted proteins. In cells, CDNF and MANF localize in the endoplasmic reticulum (ER) and evidence suggests that MANF, and possibly CDNF, is important for the maintenance of ER homeostasis. MANF expression is particularly high in secretory tissues with extensive protein production and thus a high ER protein folding load. Deletion of MANF in mice results in a diabetic phenotype and the activation of unfolded protein response (UPR) in the pancreatic islets. However, information about the intracellular and extracellular mechanisms of MANF and CDNF action is still limited. Here we will discuss the structural motifs and physiological functions of CDNF and MANF as well as their therapeutic potential for the treatment of neurodegenerative diseases and diabetes. Currently available knockout models of MANF and CDNF in mice, zebrafish and fruit fly will increase information about the biology of these interesting proteins.
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Affiliation(s)
- Maria Lindahl
- Institute of Biotechnology, P.O.Box 56, Viikinkaari 5, FI-00014, University of Helsinki, Finland
| | - Mart Saarma
- Institute of Biotechnology, P.O.Box 56, Viikinkaari 5, FI-00014, University of Helsinki, Finland
| | - Päivi Lindholm
- Institute of Biotechnology, P.O.Box 56, Viikinkaari 5, FI-00014, University of Helsinki, Finland.
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88
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Neves J, Zhu J, Sousa-Victor P, Konjikusic M, Riley R, Chew S, Qi Y, Jasper H, Lamba DA. Immune modulation by MANF promotes tissue repair and regenerative success in the retina. Science 2016; 353:aaf3646. [PMID: 27365452 PMCID: PMC5270511 DOI: 10.1126/science.aaf3646] [Citation(s) in RCA: 170] [Impact Index Per Article: 21.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2016] [Accepted: 05/18/2016] [Indexed: 12/12/2022]
Abstract
Regenerative therapies are limited by unfavorable environments in aging and diseased tissues. A promising strategy to improve success is to balance inflammatory and anti-inflammatory signals and enhance endogenous tissue repair mechanisms. Here, we identified a conserved immune modulatory mechanism that governs the interaction between damaged retinal cells and immune cells to promote tissue repair. In damaged retina of flies and mice, platelet-derived growth factor (PDGF)-like signaling induced mesencephalic astrocyte-derived neurotrophic factor (MANF) in innate immune cells. MANF promoted alternative activation of innate immune cells, enhanced neuroprotection and tissue repair, and improved the success of photoreceptor replacement therapies. Thus, immune modulation is required during tissue repair and regeneration. This approach may improve the efficacy of stem-cell-based regenerative therapies.
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Affiliation(s)
- Joana Neves
- Buck Institute for Research on Aging, 8001 Redwood Boulevard, Novato, CA 94945-1400, USA
| | - Jie Zhu
- Buck Institute for Research on Aging, 8001 Redwood Boulevard, Novato, CA 94945-1400, USA
| | - Pedro Sousa-Victor
- Buck Institute for Research on Aging, 8001 Redwood Boulevard, Novato, CA 94945-1400, USA
| | - Mia Konjikusic
- Buck Institute for Research on Aging, 8001 Redwood Boulevard, Novato, CA 94945-1400, USA
| | - Rebeccah Riley
- Buck Institute for Research on Aging, 8001 Redwood Boulevard, Novato, CA 94945-1400, USA
| | - Shereen Chew
- Buck Institute for Research on Aging, 8001 Redwood Boulevard, Novato, CA 94945-1400, USA
| | - Yanyan Qi
- Buck Institute for Research on Aging, 8001 Redwood Boulevard, Novato, CA 94945-1400, USA
| | - Heinrich Jasper
- Buck Institute for Research on Aging, 8001 Redwood Boulevard, Novato, CA 94945-1400, USA.
| | - Deepak A Lamba
- Buck Institute for Research on Aging, 8001 Redwood Boulevard, Novato, CA 94945-1400, USA.
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89
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Galli E, Härkönen T, Sainio MT, Ustav M, Toots U, Urtti A, Yliperttula M, Lindahl M, Knip M, Saarma M, Lindholm P. Increased circulating concentrations of mesencephalic astrocyte-derived neurotrophic factor in children with type 1 diabetes. Sci Rep 2016; 6:29058. [PMID: 27356471 PMCID: PMC4928177 DOI: 10.1038/srep29058] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2015] [Accepted: 06/10/2016] [Indexed: 12/17/2022] Open
Abstract
Mesencephalic astrocyte-derived neurotrophic factor (MANF) was recently shown to be essential for the survival and proliferation of pancreatic β-cells in mice, where deletion of MANF resulted in diabetes. The current study aimed at determining whether the concentration of circulating MANF is associated with the clinical manifestation of human type 1 diabetes (T1D). MANF expression in T1D or MANF levels in serum have not been previously studied. We developed an enzyme-linked immunosorbent assay (ELISA) for MANF and measured serum MANF concentrations from 186 newly diagnosed children and adolescents and 20 adults with longer-term T1D alongside with age-matched controls. In healthy controls the mean serum MANF concentration was 7.0 ng/ml. High MANF concentrations were found in children 1–9 years of age close to the diagnosis of T1D. The increased MANF concentrations were not associated with diabetes-predictive autoantibodies and autoantibodies against MANF were extremely rare. Patients with conspicuously high MANF serum concentrations had lower C-peptide levels compared to patients with moderate MANF concentrations. Our data indicate that increased MANF concentrations in serum are associated with the clinical manifestation of T1D in children, but the exact mechanism behind the increase remains elusive.
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Affiliation(s)
- Emilia Galli
- Institute of Biotechnology, University of Helsinki, Finland.,Division of Pharmaceutical Biosciences, Centre for Drug Research, University of Helsinki, Finland
| | - Taina Härkönen
- Children's Hospital, University of Helsinki and Helsinki University Central Hospital, Finland.,Research Programs Unit, Diabetes and Obesity, University of Helsinki, Finland
| | | | | | | | - Arto Urtti
- Division of Pharmaceutical Biosciences, Centre for Drug Research, University of Helsinki, Finland
| | - Marjo Yliperttula
- Division of Pharmaceutical Biosciences, Centre for Drug Research, University of Helsinki, Finland
| | - Maria Lindahl
- Institute of Biotechnology, University of Helsinki, Finland
| | - Mikael Knip
- Children's Hospital, University of Helsinki and Helsinki University Central Hospital, Finland.,Research Programs Unit, Diabetes and Obesity, University of Helsinki, Finland.,Folkhälsan Research Center, Helsinki, Finland
| | - Mart Saarma
- Institute of Biotechnology, University of Helsinki, Finland
| | - Päivi Lindholm
- Institute of Biotechnology, University of Helsinki, Finland
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90
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Voutilainen MH, Arumäe U, Airavaara M, Saarma M. Therapeutic potential of the endoplasmic reticulum located and secreted CDNF/MANF family of neurotrophic factors in Parkinson's disease. FEBS Lett 2015; 589:3739-48. [PMID: 26450777 DOI: 10.1016/j.febslet.2015.09.031] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2015] [Revised: 09/23/2015] [Accepted: 09/30/2015] [Indexed: 12/16/2022]
Abstract
Parkinson's disease (PD) is a progressive neurodegenerative disorder where dopamine (DA) neurons in the substantia nigra degenerate and die. Since no cure for PD exists, there is a need for disease-modifying drugs. Glial cell line-derived neurotrophic factor (GDNF) and related neurturin (NRTN) can protect and repair DA neurons in neurotoxin animal models of PD. However, GDNF was unable to rescue DA neurons in an α-synuclein model of PD, and both factors have shown modest effects in phase two clinical trials. Neurotrophic factors (NTFs), cerebral DA NTF (CDNF) and mesencephalic astrocyte-derived NTF (MANF) form a novel family of evolutionarily conserved, endoplasmic reticulum (ER) located and secreted NTFs. CDNF and MANF have a unique structure and an unparalleled dual mode of action that differs from other known NTFs. Both protect cells from ER stress, and regulate the unfolded protein response via interacting with chaperons, and CDNF dissolves intracellular α-synuclein aggregates. By binding to putative plasma membrane receptors, they promote the survival of DA neurons similarly to conventional NTFs. In animal models of PD, CDNF protects and repairs DA neurons, regulates ER stress, and improves motor function more efficiently than other NTFs.
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Affiliation(s)
| | - Urmas Arumäe
- Institute of Biotechnology, University of Helsinki, Finland; Department of Gene Technology, Tallinn University of Technology, Tallinn, Estonia
| | | | - Mart Saarma
- Institute of Biotechnology, University of Helsinki, Finland.
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91
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Ye JJ, Ma SS, Gao YF, Shen YJ, Shen YX. Association between expression level of mesencephalic astrocyte-derived neurotrophic factor protein and disease progression in patients with chronic hepatitis B virus infection. Shijie Huaren Xiaohua Zazhi 2015; 23:3532-3537. [DOI: 10.11569/wcjd.v23.i22.3532] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
AIM: To investigate the expression level of endoplasmic reticulum stress related mesencephalic astrocyte-derived neurotrophic factor (MANF) protein and assess its clinical significance in patients with chronic hepatitis B virus (HBV) infection.
METHODS: The expression levels of MANF protein in peripheral blood plasma was measured by ELISA in asymptomatic hepatitis B virus surface antigen (HBsAg) carriers (ASC), chronic hepatitis B (CHB), compensatory liver cirrhosis (CLC) and decompensated liver cirrhosis (DLC) patients after chronic HBV infection and normal healthy controls (HC). The relationship between MANF protein expression and different stages of chronic HBV infection was analyzed.
RESULTS: The expression levels of MANF protein among the HC, ASC, CHB, CLC, and DLC groups had a statistically significant difference (F = 7.391, P = 0.00). Further data analysis showed that the expression levels of MANF protein in the CLC and DLC groups had a statistically significant difference compared with the HC, ASC and CHB groups, but there was no significant difference between the HC, ASC and CHB groups. The expression levels of MANF protein had a statistically significant difference in the three groups of patients stratified by HBsAg level (< 1500 IU/mL, 1500-20000 IU/mL and > 20000 IU/mL) (F = 9.420, P = 0.000). The difference in MANF protein expression levels was statistically significant between patients with different levels of aspartate aminotransferase and total bilirubin, but there was no statistical difference between patients with different levels of alanine aminotransferase, HBV DNA, or between hepatitis B e antigen (HBeAg) positive group and HBeAg-negative group.
CONCLUSION: The expression levels of MANF protein are negatively associated with the disease progression in patients with chronic HBV infection.
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