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Omoda A, Matsumoto K, Yoshino KI, Tachibana M, Tsuboi T, Torii M, Ishino T, Iriko H. Skeleton binding protein 1 localizes to the Maurer's cleft and interacts with PfHSP70-1 and PfHSP70-x in Plasmodium falciparum gametocyte-infected erythrocytes. Parasitol Int 2024; 100:102864. [PMID: 38331312 DOI: 10.1016/j.parint.2024.102864] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2023] [Revised: 02/01/2024] [Accepted: 02/03/2024] [Indexed: 02/10/2024]
Abstract
Plasmodium falciparum accounts for the majority of malaria deaths, due to pathology provoked by the ability of infected erythrocytes to adhere to vascular endothelium within deep tissues. The parasite recognizes endothelium by trafficking and displaying protein ligands on the surface of asexual stage infected erythrocytes, such as members of the large family of pathogenic proteins, P. falciparum erythrocyte membrane protein 1 (PfEMP1). Parasite-encoded skeleton binding protein 1 (SBP1) plays an important role in the transport of these binding-related surface proteins, via cleft-like membranous structures termed Maurer's clefts, which are present within the cytoplasm of infected erythrocytes. Erythrocytes infected with gametocyte stages accumulate in the extravascular compartment of bone marrow; and it was suggested that their surface-expressed adhesion molecule profile and protein trafficking mechanisms might differ from those in asexual stage parasites. Protein trafficking mechanisms via Maurer's clefts have been well investigated in asexual stage parasite-infected erythrocytes; but little is known regarding the gametocyte stages. In this study, we characterized SBP1 during gametocyte maturation and demonstrated that SBP1 is expressed and localizes to dot-like Maurer's cleft structures in the cytoplasm of gametocyte-infected erythrocytes. Co-immunoprecipitation and mass spectrometry assays indicated that SBP1 interacts with the molecular chaperones PfHSP70-1 and PfHSP70-x. Localization analysis suggested that some PfHSP70-1 and/or PfHSP70-x localize in a dot-like pattern within the cytoplasm of immature gametocyte-infected erythrocytes. These findings suggest that SBP1 may interact with HSP70 chaperones in the infected erythrocyte cytoplasm during the immature gametocyte stages.
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Affiliation(s)
- Ayaka Omoda
- Division of Global Infectious Diseases, Department of Public Health, Graduate School of Health Sciences, Kobe University, Kobe, Hyogo, Japan
| | - Konomi Matsumoto
- Faculty of Health Sciences, Kobe University School of Medicine, Kobe, Hyogo, Japan
| | | | - Mayumi Tachibana
- Division of Molecular Parasitology, Proteo-Science Center, Ehime University, Toon, Ehime, Japan
| | - Takafumi Tsuboi
- Division of Cell-Free Sciences, Proteo-Science Center, Ehime University, Matsuyama, Ehime, Japan
| | - Motomi Torii
- Division of Global Infectious Diseases, Department of Public Health, Graduate School of Health Sciences, Kobe University, Kobe, Hyogo, Japan; Division of Molecular Parasitology, Proteo-Science Center, Ehime University, Toon, Ehime, Japan
| | - Tomoko Ishino
- Department of Parasitology and Tropical Medicine, Tokyo Medical and Dental University, Bunkyo-ku, Tokyo, Japan
| | - Hideyuki Iriko
- Division of Global Infectious Diseases, Department of Public Health, Graduate School of Health Sciences, Kobe University, Kobe, Hyogo, Japan; Faculty of Health Sciences, Kobe University School of Medicine, Kobe, Hyogo, Japan.
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Zhao H, Yi D, Li L, Zhao Y, Li M. Modular Weaving DNAzyme in Skeleton of DNA Nanocages for Photoactivatable Catalytic Activity Regulation. Angew Chem Int Ed Engl 2024; 63:e202404064. [PMID: 38517264 DOI: 10.1002/anie.202404064] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2024] [Indexed: 03/23/2024]
Abstract
DNAzymes exhibit tremendous application potentials in the field of biosensing and gene regulation due to its unique catalytic function. However, spatiotemporally controlled regulation of DNAzyme activity remains a daunting challenge, which may cause nonspecific signal leakage or gene silencing of the catalytic systems. Here, we report a photochemical approach via modular weaving active DNAzyme into the skeleton of tetrahedral DNA nanocages (TDN) for light-triggered on-demand liberation of DNAzyme and thus conditional control of gene regulation activity. We demonstrate that the direct encoding of DNAzyme in TDN could improve the biostability of DNAzyme and ensure the delivery efficiency, comparing with the conventional surface anchoring strategy. Furthermore, the molecular weaving of the DNA nanostructures allows remote control of DNAzyme-mediated gene regulation with high spatiotemporal precision of light. In addition, we demonstrate that the approach is applicable for controlled regulation of the gene editing functions of other functional nucleic acids.
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Affiliation(s)
- Hengzhi Zhao
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, National Center for Nanoscience and Technology, 11 ZhongGuanCun BeiYiTiao, Beijing, 100190, China
| | - Deyu Yi
- School of Chemistry and Biological Engineering, Beijing Key Laboratory for Bioengineering and Sensing Technology, University of Science and Technology Beijing, 30 XueYuan Road, Beijing, 100083, China
| | - Lele Li
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, National Center for Nanoscience and Technology, 11 ZhongGuanCun BeiYiTiao, Beijing, 100190, China
| | - Yuliang Zhao
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, National Center for Nanoscience and Technology, 11 ZhongGuanCun BeiYiTiao, Beijing, 100190, China
| | - Mengyuan Li
- School of Chemistry and Biological Engineering, Beijing Key Laboratory for Bioengineering and Sensing Technology, University of Science and Technology Beijing, 30 XueYuan Road, Beijing, 100083, China
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3
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Jia Z, Liu R, Chang Q, Zhou X, De X, Yang Z, Li Y, Zhang C, Wang F, Ge J. Proof of concept in utilizing the peptidoglycan skeleton of pathogenic bacteria as antigen delivery platform for enhanced immune response. Int J Biol Macromol 2024; 264:130591. [PMID: 38437938 DOI: 10.1016/j.ijbiomac.2024.130591] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2023] [Revised: 02/29/2024] [Accepted: 03/01/2024] [Indexed: 03/06/2024]
Abstract
Subunit vaccines are becoming increasingly important because of their safety and effectiveness. However, subunit vaccines often exhibit limited immunogenicity, necessitating the use of suitable adjuvants to elicit robust immune responses. In this study, we demonstrated for the first time that pathogenic bacteria can be prepared into a purified peptidoglycan skeleton without nucleic acids and proteins, presenting bacterium-like particles (pBLP). Our results showed that the peptidoglycan skeletons screened from four pathogens could activate Toll-like receptor1/2 receptors better than bacterium-like particles from Lactococcus lactis in macrophages. We observed that pBLP was safe in mouse models of multiple ages. Furthermore, pBLP improved the performance of two commercial vaccines in vivo. We confirmed that pBLP successfully loaded antigens onto the surface and proved to be an effective antigen delivery platform with enhanced antibody titers, antibody avidity, balanced subclass distribution, and mucosal immunity. These results indicate that the peptidoglycan skeleton of pathogenic bacteria represents a new strategy for developing subunit vaccine delivery systems.
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Affiliation(s)
- Zheng Jia
- College of Veterinary Medicine, Northeast Agricultural University, Harbin 150036, China
| | - Runhang Liu
- College of Veterinary Medicine, Northeast Agricultural University, Harbin 150036, China; State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, The Chinese Academy of Agricultural Sciences, Harbin 150086, China
| | - Qingru Chang
- College of Veterinary Medicine, Northeast Agricultural University, Harbin 150036, China
| | - Xinyao Zhou
- College of Veterinary Medicine, Northeast Agricultural University, Harbin 150036, China
| | - Xinqi De
- College of Veterinary Medicine, Northeast Agricultural University, Harbin 150036, China
| | - Zaixing Yang
- College of Veterinary Medicine, Northeast Agricultural University, Harbin 150036, China
| | - Yifan Li
- College of Veterinary Medicine, Northeast Agricultural University, Harbin 150036, China
| | - Chuankun Zhang
- College of Veterinary Medicine, Northeast Agricultural University, Harbin 150036, China
| | - Fang Wang
- State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, The Chinese Academy of Agricultural Sciences, Harbin 150086, China.
| | - Junwei Ge
- College of Veterinary Medicine, Northeast Agricultural University, Harbin 150036, China; Heilongjiang Provincial Key Laboratory of Zoonosis, Harbin 150036, China.
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4
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Zang H, Cheng Y, Li M, Zhou L, Hong LL, Deng H, Lin HW, Zhou Y. Mutagenetic analysis of the biosynthetic pathway of tetramate bripiodionen bearing 3-(2H-pyran-2-ylidene)pyrrolidine-2,4-dione skeleton. Microb Cell Fact 2024; 23:87. [PMID: 38515152 PMCID: PMC10956176 DOI: 10.1186/s12934-024-02364-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2024] [Accepted: 03/12/2024] [Indexed: 03/23/2024] Open
Abstract
BACKGROUND Natural tetramates are a family of hybrid polyketides bearing tetramic acid (pyrrolidine-2,4-dione) moiety exhibiting a broad range of bioactivities. Biosynthesis of tetramates in microorganisms is normally directed by hybrid polyketide synthase (PKS) and nonribosomal peptide synthetase (NRPS) machineries, which form the tetramic acid ring by recruiting trans- or cis-acting thioesterase-like Dieckmann cyclase in bacteria. There are a group of tetramates with unique skeleton of 3-(2H-pyran-2-ylidene)pyrrolidine-2,4-dione, which remain to be investigated for their biosynthetic logics. RESULTS Herein, the tetramate type compounds bripiodionen (BPD) and its new analog, featuring the rare skeleton of 3-(2H-pyran-2-ylidene)pyrrolidine-2,4-dione, were discovered from the sponge symbiotic bacterial Streptomyces reniochalinae LHW50302. Gene deletion and mutant complementation revealed the production of BPDs being correlated with a PKS-NRPS biosynthetic gene cluster (BGC), in which a Dieckmann cyclase gene bpdE was identified by sit-directed mutations. According to bioinformatic analysis, the tetramic acid moiety of BPDs should be formed on an atypical NRPS module constituted by two discrete proteins, including the C (condensation)-A (adenylation)-T (thiolation) domains of BpdC and the A-T domains of BpdD. Further site-directed mutagenetic analysis confirmed the natural silence of the A domain in BpdC and the functional necessities of the two T domains, therefore suggesting that an unusual aminoacyl transthiolation should occur between the T domains of two NRPS subunits. Additionally, characterization of a LuxR type regulator gene led to seven- to eight-fold increasement of BPDs production. The study presents the first biosynthesis case of the natural molecule with 3-(2H-pyran-2-ylidene)pyrrolidine-2,4-dione skeleton. Genomic mining using BpdD as probe reveals that the aminoacyl transthiolation between separate NRPS subunits should occur in a certain population of NRPSs in nature.
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Affiliation(s)
- Haixia Zang
- Research Center for Marine Drugs, Department of Pharmacy, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200127, China
| | - Yijia Cheng
- Research Center for Marine Drugs, Department of Pharmacy, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200127, China
| | - Mengjia Li
- Research Center for Marine Drugs, Department of Pharmacy, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200127, China
| | - Lin Zhou
- Research Center for Marine Drugs, Department of Pharmacy, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200127, China
| | - Li-Li Hong
- Research Center for Marine Drugs, Department of Pharmacy, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200127, China
| | - Hai Deng
- Department of Chemistry, University of Aberdeen, Aberdeen, AB24 3UE, UK
| | - Hou-Wen Lin
- Research Center for Marine Drugs, Department of Pharmacy, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200127, China.
| | - Yongjun Zhou
- Research Center for Marine Drugs, Department of Pharmacy, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200127, China.
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Alford AI, Hankenson KD. Thrombospondins modulate cell function and tissue structure in the skeleton. Semin Cell Dev Biol 2024; 155:58-65. [PMID: 37423854 DOI: 10.1016/j.semcdb.2023.06.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2023] [Accepted: 06/29/2023] [Indexed: 07/11/2023]
Abstract
Thrombospondins (TSPs) belong to a functional class of ECM proteins called matricellular proteins that are not primarily structural, but instead influence cellular interactions within the local extracellular environment. The 3D arrangement of TSPs allow interactions with other ECM proteins, sequestered growth factors, and cell surface receptors. They are expressed in mesenchymal condensations and limb buds during skeletal development, but they are not required for patterning. Instead, when absent, there are alterations in musculoskeletal connective tissue ECM structure, organization, and function, as well as altered skeletal cell phenotypes. Both functional redundancies and unique contributions to musculoskeletal tissue structure and physiology are revealed in mouse models with compound TSP deletions. Crucial roles of individual TSPs are revealed during musculoskeletal injury and regeneration. The interaction of TSPs with mesenchymal stem cells (MSC), and their influence on cell fate, function, and ultimately, musculoskeletal phenotype, suggest that TSPs play integral, but as yet poorly understood roles in musculoskeletal health. Here, unique and overlapping contributions of trimeric TSP1/2 and pentameric TSP3/4/5 to musculoskeletal cell and matrix physiology are reviewed. Opportunities for new research are also noted.
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Affiliation(s)
- Andrea I Alford
- Department of Orthopaedic Surgery, University of Michigan School of Medicine, A. Alfred Taubman Biomedical Sciences Research Building, Ann Arbor, MI 48109, United States.
| | - Kurt D Hankenson
- Department of Orthopaedic Surgery, University of Michigan School of Medicine, A. Alfred Taubman Biomedical Sciences Research Building, Ann Arbor, MI 48109, United States
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Zhang M, Xiong S, Gao D, Liu C, Xiao L. Tension regulates the cartilage phenotypic expression of endplate chondrocytes through the α-catenin/actin skeleton/Hippo pathway. J Cell Mol Med 2024; 28:e18133. [PMID: 38332509 PMCID: PMC10853574 DOI: 10.1111/jcmm.18133] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2023] [Revised: 10/15/2023] [Accepted: 11/09/2023] [Indexed: 02/10/2024] Open
Abstract
The study aimed to investigate the regulatory mechanism of intracellular tension signaling in endplate chondrocytes and its impact on extracellular matrix synthesis. Human endplate chondrocytes were subjected to tension load using Flexcell FX-5000™, and changes in phenotype, morphology, and the expression of Hippo signaling pathway and α-Catenin were assessed through various techniques. Through the overexpression of YAP and inhibition of α-Catenin, the study clarified the intracellular tension signaling pathway and its regulation of extracellular matrix synthesis in endplate cartilage. In vitro-cultured human endplate chondrocytes significantly suppressed phenotype-related genes and proteins, accompanied by distinct changes in cytoskeleton morphology. Tension activation resulted in the substantial activation of the Hippo pathway, increased phosphorylation of YAP, and reduced nuclear translocation of YAP. YAP overexpression alleviated the inhibitory effect of tension on extracellular matrix synthesis in endplate chondrocytes. Tension also upregulated the expression of α-Catenin in endplate chondrocytes, which was attenuated by inhibiting α-Catenin expression, thereby reducing the impact of tension on cytoskeletal morphology and YAP nuclear translocation. Taken together, the α-Catenin/actin skeleton/Hippo-coupled network is a crucial signaling pathway for tension signaling in endplate chondrocytes, providing potential therapeutic targets for the treatment of endplate cartilage degeneration.
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Affiliation(s)
- Min Zhang
- Department of OrthopedicsYijishan Hospital, The First Affiliated Hospital of Wannan Medical CollegeWuhuChina
| | - Shouliang Xiong
- Department of OrthopedicsYijishan Hospital, The First Affiliated Hospital of Wannan Medical CollegeWuhuChina
| | - Daokuan Gao
- Department of Spine SurgeryYijishan Hospital, The First Affiliated Hospital of Wannan Medical CollegeWuhuChina
| | - Chen Liu
- Department of OrthopedicsYijishan Hospital, The First Affiliated Hospital of Wannan Medical CollegeWuhuChina
| | - Liang Xiao
- Department of Spine SurgeryYijishan Hospital, The First Affiliated Hospital of Wannan Medical CollegeWuhuChina
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7
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Spurná Z, Čapková P, Punová L, DuchoslavovÁ J, Aleksijevic D, Venháčová P, Srovnal J, Štellmachová J, Curtisová V, Bitnerová V, Petřková J, Kolaříková K, Janíková M, Kratochvílová R, Vrtěl P, Vodička R, Vrtěl R, Zapletalová J. Clinical-genetic analysis of selected genes involved in the development of the human skeleton in 128 Czech patients with suspected congenital skeletal abnormalities. Gene 2024; 892:147881. [PMID: 37806643 DOI: 10.1016/j.gene.2023.147881] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2023] [Revised: 10/04/2023] [Accepted: 10/05/2023] [Indexed: 10/10/2023]
Abstract
BACKGROUND Congenital skeletal abnormalities are a heterogeneous group of diseases most commonly associated with small or disproportionate growth, cranial and facial dysmorphisms, delayed bone maturation, etc. Nonetheless, no detailed genotype-phenotype correlation in patients with specific genetic variants is readily available. Ergo, this study focuses on the analysis of patient phenotypes with candidate variants in genes involved in bone growth as detected by molecular genetic analysis. METHODS In this study we used molecular genetic methods to analyse the ACAN, COL2A1, FGFR3, IGFALS, IGF1, IGF1R, GHR, NPR2, STAT5B and SHOX genes in 128 Czech children with suspected congenital skeletal abnormalities. Pathogenic variants and variants of unclear clinical significance were identified and we compared their frequency in this study cohort to the European non-Finnish population. Furthermore, a prediction tool was utilised to determine their possible impact on the final protein. All clinical patient data was obtained during pre-test genetic counselling. RESULTS Pathogenic variants were identified in the FGFR3, GHR, COL2A1 and SHOX genes in a total of six patients. Furthermore, we identified 23 variants with unclear clinical significance and high allelic frequency in this cohort of patients with skeletal abnormalities. Five of them have not yet been reported in the scientific literature. CONCLUSION Congenital skeletal abnormalities may lead to a number of musculoskeletal, neurological, cardiovascular problems. Knowledge of specific pathogenic variants may help us in therapeutic procedures.
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Affiliation(s)
- Z Spurná
- Institute of Medical Genetics, Olomouc University Hospital, Olomouc, Czech Republic; Institute of Medical Genetics, Palacký University in Olomouc, Olomouc, Czech Republic
| | - P Čapková
- Institute of Medical Genetics, Olomouc University Hospital, Olomouc, Czech Republic; Institute of Medical Genetics, Palacký University in Olomouc, Olomouc, Czech Republic.
| | - L Punová
- Institute of Medical Genetics, Olomouc University Hospital, Olomouc, Czech Republic; Institute of Medical Genetics, Palacký University in Olomouc, Olomouc, Czech Republic
| | - J DuchoslavovÁ
- Institute of Medical Genetics, Olomouc University Hospital, Olomouc, Czech Republic; Institute of Medical Genetics, Palacký University in Olomouc, Olomouc, Czech Republic
| | - D Aleksijevic
- Paediatrics Department, Palacký University and University Hospital, Olomouc, Czech Republic
| | - P Venháčová
- Paediatrics Department, Palacký University and University Hospital, Olomouc, Czech Republic
| | - J Srovnal
- Institute of Medical Genetics, Olomouc University Hospital, Olomouc, Czech Republic; Institute of Medical Genetics, Palacký University in Olomouc, Olomouc, Czech Republic; Institute of Molecular and Translational Medicine, Czech Advanced Technology and Research Institute, Palacky University in Olomouc, Czech Republic; Cancer Research Czech Republic, Olomouc, Czech Republic
| | - J Štellmachová
- Institute of Medical Genetics, Olomouc University Hospital, Olomouc, Czech Republic; Institute of Medical Genetics, Palacký University in Olomouc, Olomouc, Czech Republic
| | - V Curtisová
- Institute of Medical Genetics, Olomouc University Hospital, Olomouc, Czech Republic; Institute of Medical Genetics, Palacký University in Olomouc, Olomouc, Czech Republic
| | - V Bitnerová
- Institute of Medical Genetics, Olomouc University Hospital, Olomouc, Czech Republic; Institute of Medical Genetics, Palacký University in Olomouc, Olomouc, Czech Republic
| | - J Petřková
- Institute of Medical Genetics, Olomouc University Hospital, Olomouc, Czech Republic; First Department of Internal Medicine - Cardiology, University Hospital Olomouc, Olomouc, Czech Republic; First Department of Internal Medicine - Cardiology, Palacký University in Olomouc, Olomouc, Czech Republic; Institute of Pathological Physiology, Palacký University in Olomouc, Olomouc, Czech Republic
| | - K Kolaříková
- Department of Neurology, University Hospital Olomouc, Czech Republic; Department of Neurology, Palacky University Olomouc, Czech Republic
| | - M Janíková
- Institute of Medical Genetics, Olomouc University Hospital, Olomouc, Czech Republic; Institute of Medical Genetics, Palacký University in Olomouc, Olomouc, Czech Republic; Institute of Clinical and Molecular Pathology, Palacký University in Olomouc, Olomouc, Czech Republic
| | - R Kratochvílová
- Institute of Medical Genetics, Olomouc University Hospital, Olomouc, Czech Republic
| | - P Vrtěl
- Institute of Medical Genetics, Olomouc University Hospital, Olomouc, Czech Republic; Institute of Medical Genetics, Palacký University in Olomouc, Olomouc, Czech Republic
| | - R Vodička
- Institute of Medical Genetics, Olomouc University Hospital, Olomouc, Czech Republic; Institute of Medical Genetics, Palacký University in Olomouc, Olomouc, Czech Republic
| | - R Vrtěl
- Institute of Medical Genetics, Olomouc University Hospital, Olomouc, Czech Republic; Institute of Medical Genetics, Palacký University in Olomouc, Olomouc, Czech Republic
| | - J Zapletalová
- Paediatrics Department, Palacký University and University Hospital, Olomouc, Czech Republic
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Chen Y, Meng L, Wang W, Ye L, Huang L, Wang C, Wang S, Li M, Pei Y, Zhang S, Zou Y, Xu Y. Design, synthesis and biological evaluation of novel DCLK1 inhibitor containing purine skeleton for the treatment of pancreatic cancer. Eur J Med Chem 2023; 261:115846. [PMID: 37862816 DOI: 10.1016/j.ejmech.2023.115846] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2023] [Revised: 09/27/2023] [Accepted: 09/28/2023] [Indexed: 10/22/2023]
Abstract
Pancreatic cancer is a highly lethal form of malignancy that continues to pose a significant and unresolved health challenge. Doublecortin-like kinase 1 (DCLK1), a serine/threonine kinase, is found to be overexpressed in pancreatic cancer and holds promise as a potential therapeutic target for this disease. However, few potent inhibitors have been reported currently. Herein, a series of novel purine, pyrrolo [2,3-d]pyrimidine, and pyrazolo [3,4-d] pyrimidine derivatives were designed, synthesized, and evaluated their biological activities in vitro. Among them, compound I-5 stood out as the most potent compound with strong inhibitory activity against DCLK1 (IC50 = 171.3 nM) and remarkable antiproliferative effects on SW1990 cell lines (IC50 = 0.6 μM). Notably, I-5 exhibited higher in vivo antitumor potency (Tumor growth inhibition value (TGI): 68.6 %) than DCLK1-IN-1 (TGI: 24.82 %) in the SW1990 xenograft model. The preliminary mechanism study demonstrated that I-5 not only inhibited SW1990 cell invasion and migration, but also decreased the expression of prominin-1 (CD133) and cluster of differentiation 44 (CD44), which are considered as differentiation markers for SW1990 stem cells. All the results indicated that I-5, a novel DCLK1 inhibitor, shows promise for further investigation in the treatment of pancreatic cancer.
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Affiliation(s)
- Yuepeng Chen
- Jiangsu Key Laboratory of Drug Design and Optimization, Department of Medicinal Chemistry, China Pharmaceutical University, Nanjing 211198, China
| | - Liuqiong Meng
- Jiangsu Key Laboratory of Drug Design and Optimization, Department of Medicinal Chemistry, China Pharmaceutical University, Nanjing 211198, China
| | - Wenze Wang
- Department of Pharmacology, China Pharmaceutical University, Nanjing 211198, China
| | - Liu Ye
- Department of Pharmacology, China Pharmaceutical University, Nanjing 211198, China
| | - Lei Huang
- Department of Pharmacology, China Pharmaceutical University, Nanjing 211198, China
| | - Chenghao Wang
- Department of Pharmacology, China Pharmaceutical University, Nanjing 211198, China
| | - Shuping Wang
- Jiangsu Key Laboratory of Drug Design and Optimization, Department of Medicinal Chemistry, China Pharmaceutical University, Nanjing 211198, China; Department of Pharmacology, China Pharmaceutical University, Nanjing 211198, China
| | - Mengyao Li
- Department of Pharmacology, China Pharmaceutical University, Nanjing 211198, China
| | - Yingxin Pei
- Department of Pharmacology, China Pharmaceutical University, Nanjing 211198, China
| | - Shijie Zhang
- Department of Pharmacology, China Pharmaceutical University, Nanjing 211198, China
| | - Yi Zou
- Jiangsu Key Laboratory of Drug Design and Optimization, Department of Medicinal Chemistry, China Pharmaceutical University, Nanjing 211198, China; Department of Pharmacology, China Pharmaceutical University, Nanjing 211198, China.
| | - Yungen Xu
- Jiangsu Key Laboratory of Drug Design and Optimization, Department of Medicinal Chemistry, China Pharmaceutical University, Nanjing 211198, China; Department of Pharmacology, China Pharmaceutical University, Nanjing 211198, China.
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Zhang XQ, Lu ZH, Tang GM, Duan LP, Wang ZH, Guo ZY, Proksch P. Prunolactones A-G, proangiogenic isocoumarin derivatives with an unusual 6/6/6/6/6 spiropentacyclic skeleton from the endophytic fungus Phomopsis prunorum. Bioorg Chem 2023; 141:106898. [PMID: 37801783 DOI: 10.1016/j.bioorg.2023.106898] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2023] [Revised: 09/23/2023] [Accepted: 09/27/2023] [Indexed: 10/08/2023]
Abstract
Seven novel isocoumarins, prunolactones A-G (1-7), featuring an unusual 6/6/6/6/6 spiropentacyclic skeleton, together with two biosynthetic precursors phomopsilactone (8) and methyl 3-epi-shikimate (9), were isolated from the endophytic fungus Phomopsis prunorum guided by UPLC-QTOF-MS and 1H NMR spectroscopic analytical techniques. Their structures including absolute configurations of 1-7 were elucidated based on extensive spectroscopic data, X-ray diffraction analysis, and ECD calculations. Biogenetically, compounds 1-7 are proposed to be derived from polyketide and shikimate pathways via key intermolecular Diels - Alder reactions. Compounds 2, 3, and 7 showed significant in vivo proangiogenic activity in transgenic zebrafish.
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Affiliation(s)
- Xue-Qing Zhang
- Hubei Key Laboratory of Natural Product Research and Development (China Three Gorges University), College of Biological and Pharmaceutical Sciences, China Three Gorges University, Yichang 443002, People's Republic of China; Key Laboratory of Functional Yeast, China National Light Industry, College of Biological and Pharmaceutical Sciences, China Three Gorges University, Yichang 443002, People's Republic of China.
| | - Zhen-Hong Lu
- Hubei Key Laboratory of Natural Product Research and Development (China Three Gorges University), College of Biological and Pharmaceutical Sciences, China Three Gorges University, Yichang 443002, People's Republic of China
| | - Guan-Mei Tang
- Hubei Key Laboratory of Natural Product Research and Development (China Three Gorges University), College of Biological and Pharmaceutical Sciences, China Three Gorges University, Yichang 443002, People's Republic of China
| | - Li-Ping Duan
- NHC Key Laboratory of Parasite and Vector Biology, WHO Collaborating Centre for Tropical Diseases, National Institute of Parasitic Diseases, Chinese Center for Disease Control and Prevention, Shanghai 200025, People's Republic of China
| | - Zhao-Hang Wang
- Hubei Key Laboratory of Natural Product Research and Development (China Three Gorges University), College of Biological and Pharmaceutical Sciences, China Three Gorges University, Yichang 443002, People's Republic of China
| | - Zhi-Yong Guo
- Hubei Key Laboratory of Natural Product Research and Development (China Three Gorges University), College of Biological and Pharmaceutical Sciences, China Three Gorges University, Yichang 443002, People's Republic of China; Key Laboratory of Functional Yeast, China National Light Industry, College of Biological and Pharmaceutical Sciences, China Three Gorges University, Yichang 443002, People's Republic of China.
| | - Peter Proksch
- Institute of Pharmaceutical Biology and Biotechnology, Heinrich-Heine-Universität Düsseldorf, Düsseldorf 40225, Germany
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Xiao Y, Zhang Y, Ji WS, Jia XN, Shan LH, Li X, Liu YJ, Jiang T, Gao F. Discovery of myrsinane-type Euphorbia diterpene derivatives through a skeleton conversion strategy from lathyrane diterpene for the treatment of Alzheimer's disease. Bioorg Chem 2023; 138:106595. [PMID: 37178652 DOI: 10.1016/j.bioorg.2023.106595] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2023] [Revised: 04/15/2023] [Accepted: 05/04/2023] [Indexed: 05/15/2023]
Abstract
A series of novel myrsinane-type Euphorbia diterpene derivatives (1-37) were synthesized from the abundant natural lathyrane-type Euphorbia factor L3, using a multi-step chemical process guided by a bioinspired skeleton conversion strategy, with the aim of discovering potential anti-Alzheimer's disease (AD) bioactive lead compounds. The synthesis process involved a concise reductive olefin coupling reaction through an intramolecular Michael addition with a free radical, followed by a visible-light-triggered regioselective cyclopropane ring-opening. The cholinesterase inhibitory and neuroprotective activities of the synthesized myrsinane derivatives were evaluated. Most of the compounds showed moderate to strong potency, highlighting the importance of ester groups in Euphorbia diterpene. In particular, derivative 37 displayed the most potent acetylcholinesterase (AChE) inhibition, with an IC50 value of 8.3 μM, surpassing that of the positive control, tacrine. Additionally, 37 also showed excellent neuroprotective effect against H2O2-induced injury in SH-SY5Y cells, with a cell viability rate of 124.2% at 50 μM, which was significantly higher than that of the model group (viability rate 52.1%). Molecular docking, reactive oxygen species (ROS) analysis, immunofluorescence, and immunoblotting were performed to investigate the mechanism of action of myrsinane derivative 37. The results indicated that derivative 37 may be a promising myrsinane-type multi-functional lead compound for the treatment of Alzheimer's disease. Furthermore, a preliminary SAR analysis was performed to study the acetylcholinesterase inhibitory and neuroprotective activities of these diterpenes.
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Affiliation(s)
- Yao Xiao
- Sichuan Engineering Research Center for Biomimetic Synthesis of Natural Drugs, School of Life Science and Engineering, Southwest Jiaotong University, Chengdu 610031, PR China
| | - Yang Zhang
- Sichuan Engineering Research Center for Biomimetic Synthesis of Natural Drugs, School of Life Science and Engineering, Southwest Jiaotong University, Chengdu 610031, PR China
| | - Wan-Sheng Ji
- Sichuan Engineering Research Center for Biomimetic Synthesis of Natural Drugs, School of Life Science and Engineering, Southwest Jiaotong University, Chengdu 610031, PR China
| | - Xiao-Nan Jia
- Sichuan Engineering Research Center for Biomimetic Synthesis of Natural Drugs, School of Life Science and Engineering, Southwest Jiaotong University, Chengdu 610031, PR China
| | - Lian-Hai Shan
- Sichuan Engineering Research Center for Biomimetic Synthesis of Natural Drugs, School of Life Science and Engineering, Southwest Jiaotong University, Chengdu 610031, PR China
| | - Xiaohuan Li
- Sichuan Engineering Research Center for Biomimetic Synthesis of Natural Drugs, School of Life Science and Engineering, Southwest Jiaotong University, Chengdu 610031, PR China
| | - Yan-Jun Liu
- The Center of Gastrointestinal and Minimally Invasive Surgery, Department of General Surgery, The Third People's Hospital of Chengdu, The Affiliated Hospital of Southwest Jiaotong University, Chengdu 610031, PR China.
| | - Ting Jiang
- Department of Pharmacy, The First Afflicted Hospital of Chengdu Medical College, Chengdu 610500, PR China.
| | - Feng Gao
- Sichuan Engineering Research Center for Biomimetic Synthesis of Natural Drugs, School of Life Science and Engineering, Southwest Jiaotong University, Chengdu 610031, PR China.
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11
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Koyama T, Zaizen H, Takahashi I, Nakamura H, Nakajima M, Asami T. Small Molecules with Thiourea Skeleton Induce Ethylene Response in Arabidopsis. Int J Mol Sci 2023; 24:12420. [PMID: 37569795 PMCID: PMC10418922 DOI: 10.3390/ijms241512420] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2023] [Revised: 08/01/2023] [Accepted: 08/02/2023] [Indexed: 08/13/2023] Open
Abstract
Ethylene is the only gaseous plant hormone that regulates several aspects of plant growth, from seedling morphogenesis to fruit ripening and organ senescence. Ethylene also stimulates the germination of Striga hermonthica, a root parasitic weed that severely damages crops in sub-Saharan Africa. Thus, ethylene response stimulants can be used as weed and crop control agents. Ethylene and ethephon, an ethylene-releasing compound, are currently used as ethylene response inducers. However, since ethylene is a gas, which limits its practical application, we targeted the development of a solid ethylene response inducer that could overcome this disadvantage. We performed chemical screening using Arabidopsis thaliana "triple response" as an indicator of ethylene response. After screening, we selected a compound with a thiourea skeleton and named it ZKT1. We then synthesized various derivatives of ZKT1 and evaluated their ethylene-like activities in Arabidopsis. Some derivatives showed considerably higher activity than ZKT1, and their activity was comparable to that of 1-aminocyclopropane-1-carboxylate. Mode of action analysis using chemical inhibitors and ethylene signaling mutants revealed that ZKT1 derivatives activate the ethylene signaling pathway through interactions with its upstream components. These thiourea derivatives can potentially be potent crop-controlling chemicals.
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Affiliation(s)
| | | | | | | | | | - Tadao Asami
- Graduate School of Agricultural and Life Sciences, The University of Tokyo, Tokyo 113-8657, Japan; (T.K.); (I.T.); (H.N.); (M.N.)
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12
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Kong L, Zhao H, Wang F, Zhang R, Yao X, Zuo R, Li J, Xu J, Qian Y, Kang Q, Fan C. Endocrine modulation of brain-skeleton axis driven by neural stem cell-derived perilipin 5 in the lipid metabolism homeostasis for bone regeneration. Mol Ther 2023; 31:1293-1312. [PMID: 36760127 DOI: 10.1016/j.ymthe.2023.02.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2022] [Revised: 12/30/2022] [Accepted: 02/02/2023] [Indexed: 02/11/2023] Open
Abstract
Factors released from the nervous system always play crucial roles in modulating bone metabolism and regeneration. How the brain-driven endocrine axes maintain bone homeostasis, especially under metabolic disorders, remains obscure. Here, we found that neural stem cells (NSCs) residing in the subventricular zone participated in lipid metabolism homeostasis of regenerative bone through exosomal perilipin 5 (PLIN5). Fluorescence-labeled exosomes tracing and histological detection identified that NSC-derived exosomes (NSC-Exo) could travel from the lateral ventricle into bone injury sites. Homocysteine (Hcy) led to osteogenic and angiogenic impairment, whereas the NSC-Exo were confirmed to restore it. Mecobalamin, a clinically used neurotrophic drug, further enhanced the protective effects of NSC-Exo through increased PLIN5 expression. Mechanistically, NSC-derived PLIN5 reversed excessive Hcy-induced lipid metabolic imbalance and aberrant lipid droplet accumulation through lipophagy-dependent intracellular lipolysis. Intracerebroventricular administration of mecobalamin and/or AAV-shPlin5 confirmed the effects of PLIN5-driven endocrine modulations on new bone formation and vascular reconstruction in hyperhomocysteinemic and high-fat diet models. This study uncovered a novel brain-skeleton axis that NSCs in the mammalian brain modulated bone regeneration through PLIN5-driven lipid metabolism modulation, providing evidence for lipid- or bone-targeted medicine development.
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Affiliation(s)
- Lingchi Kong
- Department of Orthopedics, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai 200233, PR China; Shanghai Engineering Research Center for Orthopaedic Material Innovation and Tissue Regeneration, Shanghai 201306, PR China; Youth Science and Technology Innovation Studio of Shanghai Jiao Tong University School of Medicine, Shanghai 200233, PR China
| | - Haoyu Zhao
- Department of Orthopedics, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai 200233, PR China
| | - Feng Wang
- Department of Orthopedics, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai 200233, PR China
| | - Rui Zhang
- Department of Orthopedics, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai 200233, PR China
| | - Xiangyun Yao
- Department of Orthopedics, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai 200233, PR China; Shanghai Engineering Research Center for Orthopaedic Material Innovation and Tissue Regeneration, Shanghai 201306, PR China; Youth Science and Technology Innovation Studio of Shanghai Jiao Tong University School of Medicine, Shanghai 200233, PR China
| | - Rongtai Zuo
- Department of Orthopedics, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai 200233, PR China
| | - Juehong Li
- Department of Orthopedics, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai 200233, PR China; Shanghai Engineering Research Center for Orthopaedic Material Innovation and Tissue Regeneration, Shanghai 201306, PR China; Youth Science and Technology Innovation Studio of Shanghai Jiao Tong University School of Medicine, Shanghai 200233, PR China
| | - Jia Xu
- Department of Orthopedics, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai 200233, PR China
| | - Yun Qian
- Department of Orthopedics, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai 200233, PR China; Shanghai Engineering Research Center for Orthopaedic Material Innovation and Tissue Regeneration, Shanghai 201306, PR China; Youth Science and Technology Innovation Studio of Shanghai Jiao Tong University School of Medicine, Shanghai 200233, PR China.
| | - Qinglin Kang
- Department of Orthopedics, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai 200233, PR China.
| | - Cunyi Fan
- Department of Orthopedics, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai 200233, PR China; Shanghai Engineering Research Center for Orthopaedic Material Innovation and Tissue Regeneration, Shanghai 201306, PR China; Youth Science and Technology Innovation Studio of Shanghai Jiao Tong University School of Medicine, Shanghai 200233, PR China.
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Sun J, Zhang CP, Chen CH, Guo XM, Liu CS, Zhou Y, Hu FL. Design, Synthesis and Molecular Docking of 1,3,4-Oxadiazole-2(3H)-thione Derivatives Containing 1,4-Benzodioxane Skeleton as Potential FabH Inhibitors. Chem Biodivers 2023; 20:e202201060. [PMID: 36579401 DOI: 10.1002/cbdv.202201060] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2022] [Revised: 12/24/2022] [Accepted: 12/27/2022] [Indexed: 12/30/2022]
Abstract
Fatty acid biosynthesis is essential for bacterial survival. Of these promising targets, β-ketoacyl-acyl carrier protein (ACP) synthase III (FabH) is the most attractive target. A series of novel 1,3,4-oxadiazole-2(3H)-thione derivatives containing 1,4-benzodioxane skeleton targeting FabH were designed and synthesized. These compounds were determined by 1 H-NMR, 13 C-NMR, MS and further confirmed by crystallographic diffraction study for compound 7m and 7n. Most of the compounds exhibited good inhibitory activity against bacteria by computer-assisted screening, antibacterial activity test and E. coli FabH inhibitory activity test, wherein compounds 7e and 7q exhibited the most significant inhibitory activities. Besides, compound 7q showed the best E. coli FabH inhibitory activity (IC50 =2.45 μΜ). Computational docking studies also showed that compound 7q interacts with FabH critical residues in the active site.
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Affiliation(s)
- Juan Sun
- College of Animal Sciences, Zhejiang University, Hangzhou, 310058, P. R. China
- School of Biological & Chemical Engineering, Zhejiang University of Science & Technology, Hangzhou, 310023, P. R. China
| | - Cui-Ping Zhang
- College of Animal Sciences, Zhejiang University, Hangzhou, 310058, P. R. China
| | - Chong-Hao Chen
- School of Biological & Chemical Engineering, Zhejiang University of Science & Technology, Hangzhou, 310023, P. R. China
| | - Xiao-Meng Guo
- School of Biological & Chemical Engineering, Zhejiang University of Science & Technology, Hangzhou, 310023, P. R. China
| | - Cai-Shi Liu
- School of Biological & Chemical Engineering, Zhejiang University of Science & Technology, Hangzhou, 310023, P. R. China
| | - Yang Zhou
- Zhejiang Engineering Research Center for Biomedical Materials, Cixi Institute of Biomedical Engineering, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo, 315300, China
| | - Fu-Liang Hu
- College of Animal Sciences, Zhejiang University, Hangzhou, 310058, P. R. China
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Yan W, Li Y, Liu Y, Wen Y, Pei H, Yang J, Chen L. Crystal structure of tubulin-barbigerone complex enables rational design of potent anticancer agents with isoflavone skeleton. Phytomedicine 2023; 109:154550. [PMID: 36610121 DOI: 10.1016/j.phymed.2022.154550] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/21/2022] [Revised: 11/08/2022] [Accepted: 11/14/2022] [Indexed: 06/17/2023]
Abstract
BACKGROUND Isoflavones possess many biological activities, including anti-inflammatory and anticancer effects. Microtubules (composed of αβ-tubulin heterodimers) are described as one possible cellular target of some of these isoflavones. However, the binding of tubulin to isoflavones has not been extensively studied, and until now, no crystal structure of the tubulin-isoflavone complex has been solved, and details of the isoflavone-tubulin interaction remain elusive. PURPOSE Barbigerone is an isoflavone mainly found in the genus Milletti, such as the edible leguminous plant Millettia ferruginea, with anticancer activity. This study aims to confirm the cellular target of barbigerone and to study its anticancer mechanism. METHOD Surface plasmon resonance assays and X-ray crystallography were used to study the interaction of barbigerone with tubulin protein. Immunofluorescence, in-cell and in vitro tubulin polymerization assays were employed to investigate the mechanism. MTT assays, cell clonal formation assays, wound healing assays, tube formation assays and H460 xenograft models were conducted to evaluate the in vitro and in vivo anticancer activities of barbigerone and one of its derivatives, 0412. RESULTS Here, we found that barbigerone binds to tubulin to inhibit tubulin polymerization. Moreover, we solved the X-ray crystal structure of the tubulin-barbigerone complex at 2.33 Å resolution, which unambiguously determined the orientation and position of barbigerone in the colchicine-binding site. Illuminated by the X-ray data, we synthetized and obtained a more active isoflavone, 0412. Both barbigerone and 0412 inhibit cancer cell proliferation, tubulin polymerization, migration of HeLa cells and capillary-like tube formation of HUVECs, induce G2/M phase cell cycle arrest and apoptosis, and exhibit anticancer activity in an H460 xenograft model. CONCLUSION In all, through biochemical and X-ray crystal structure results, we identified tubulin as the cellular target of one isoflavone, barbigerone, and proved that the tubulin-barbigerone complex plays a guiding role in obtaining a more active compound, 0412. These studies provide a crucial research basis for the development of isoflavones as anticancer candidate compounds.
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Affiliation(s)
- Wei Yan
- Laboratory of Natural and targeted small molecule drugs, State Key Laboratory of Biotherapy and Cancer Center, National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University and Collaborative Innovation Center of Biotherapy, Chengdu 610041, China
| | - Yong Li
- Laboratory of Natural and targeted small molecule drugs, State Key Laboratory of Biotherapy and Cancer Center, National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University and Collaborative Innovation Center of Biotherapy, Chengdu 610041, China
| | - Yan Liu
- Laboratory of Natural and targeted small molecule drugs, State Key Laboratory of Biotherapy and Cancer Center, National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University and Collaborative Innovation Center of Biotherapy, Chengdu 610041, China
| | - Yi Wen
- Laboratory of Natural and targeted small molecule drugs, State Key Laboratory of Biotherapy and Cancer Center, National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University and Collaborative Innovation Center of Biotherapy, Chengdu 610041, China
| | - Heying Pei
- Laboratory of Natural and targeted small molecule drugs, State Key Laboratory of Biotherapy and Cancer Center, National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University and Collaborative Innovation Center of Biotherapy, Chengdu 610041, China
| | - Jianhong Yang
- Laboratory of Natural and targeted small molecule drugs, State Key Laboratory of Biotherapy and Cancer Center, National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University and Collaborative Innovation Center of Biotherapy, Chengdu 610041, China.
| | - Lijuan Chen
- Laboratory of Natural and targeted small molecule drugs, State Key Laboratory of Biotherapy and Cancer Center, National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University and Collaborative Innovation Center of Biotherapy, Chengdu 610041, China.
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15
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Yanase Y, Tsuji G, Nakamura M, Shibata N, Demizu Y. Control of STING Agonistic/Antagonistic Activity Using Amine-Skeleton-Based c-di-GMP Analogues. Int J Mol Sci 2022; 23:ijms23126847. [PMID: 35743289 PMCID: PMC9224868 DOI: 10.3390/ijms23126847] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2022] [Revised: 06/15/2022] [Accepted: 06/18/2022] [Indexed: 02/05/2023] Open
Abstract
Stimulator of Interferon Genes (STING) is a type of endoplasmic reticulum (ER)-membrane receptor. STING is activated by a ligand binding, which leads to an enhancement of the immune-system response. Therefore, a STING ligand can be used to regulate the immune system in therapeutic strategies. However, the natural (or native) STING ligand, cyclic-di-nucleotide (CDN), is unsuitable for pharmaceutical use because of its susceptibility to degradation by enzymes and its low cell-membrane permeability. In this study, we designed and synthesized CDN derivatives by replacing the sugar-phosphodiester moiety, which is responsible for various problems of natural CDNs, with an amine skeleton. As a result, we identified novel STING ligands that activate or inhibit STING. The cyclic ligand 7, with a cyclic amine structure containing two guanines, was found to have agonistic activity, whereas the linear ligand 12 showed antagonistic activity. In addition, these synthetic ligands were more chemically stable than the natural ligands.
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Affiliation(s)
- Yuta Yanase
- National Institute of Health Sciences, 3-25-26 Tonomachi, Kawasaki 210-9501, Japan; (Y.Y.); (M.N.); (N.S.)
- Graduate School of Medical Life Science, Yokohama City University, Yokohama 230-0045, Japan
| | - Genichiro Tsuji
- National Institute of Health Sciences, 3-25-26 Tonomachi, Kawasaki 210-9501, Japan; (Y.Y.); (M.N.); (N.S.)
- Correspondence: (G.T.); (Y.D.); Tel.: +81-44-270-6579 (G.T.); +81-44-270-6578 (Y.D.)
| | - Miki Nakamura
- National Institute of Health Sciences, 3-25-26 Tonomachi, Kawasaki 210-9501, Japan; (Y.Y.); (M.N.); (N.S.)
- Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Division of Pharmaceutical Science of Okayama University, 1-1-1 Tsushimanaka, Kita 700-8530, Japan
| | - Norihito Shibata
- National Institute of Health Sciences, 3-25-26 Tonomachi, Kawasaki 210-9501, Japan; (Y.Y.); (M.N.); (N.S.)
| | - Yosuke Demizu
- National Institute of Health Sciences, 3-25-26 Tonomachi, Kawasaki 210-9501, Japan; (Y.Y.); (M.N.); (N.S.)
- Graduate School of Medical Life Science, Yokohama City University, Yokohama 230-0045, Japan
- Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Division of Pharmaceutical Science of Okayama University, 1-1-1 Tsushimanaka, Kita 700-8530, Japan
- Correspondence: (G.T.); (Y.D.); Tel.: +81-44-270-6579 (G.T.); +81-44-270-6578 (Y.D.)
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Hojo H, Ohba S. Sp7 Action in the Skeleton: Its Mode of Action, Functions, and Relevance to Skeletal Diseases. Int J Mol Sci 2022; 23:5647. [PMID: 35628456 PMCID: PMC9143072 DOI: 10.3390/ijms23105647] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2022] [Revised: 05/14/2022] [Accepted: 05/16/2022] [Indexed: 02/01/2023] Open
Abstract
Osteoblast differentiation is a tightly regulated process in which key transcription factors (TFs) and their target genes constitute gene regulatory networks (GRNs) under the control of osteogenic signaling pathways. Among these TFs, Sp7 works as an osteoblast determinant critical for osteoblast differentiation. Following the identification of Sp7 and a large number of its functional studies, recent genome-scale analyses have made a major contribution to the identification of a "non-canonical" mode of Sp7 action as well as "canonical" ones. The analyses have not only confirmed known Sp7 targets but have also uncovered its additional targets and upstream factors. In addition, biochemical analyses have demonstrated that Sp7 actions are regulated by chemical modifications and protein-protein interaction with other transcriptional regulators. Sp7 is also involved in chondrocyte differentiation and osteocyte biology as well as postnatal bone metabolism. The critical role of SP7 in the skeleton is supported by its relevance to human skeletal diseases. This review aims to overview the Sp7 actions in skeletal development and maintenance, particularly focusing on recent advances in our understanding of how Sp7 functions in the skeleton under physiological and pathological conditions.
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Affiliation(s)
- Hironori Hojo
- Center for Disease Biology and Integrative Medicine, Graduate School of Medicine, The University of Tokyo, Tokyo 113-0033, Japan;
| | - Shinsuke Ohba
- Department of Cell Biology, Institute of Biomedical Sciences, Nagasaki University, Nagasaki 852-8588, Japan
- Department of Oral Anatomy and Developmental Biology, Osaka University Graduate School of Dentistry, Osaka 565-0871, Japan
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Sato Y, Fujiwara M, Nishino H, Harada R, Kawasaki E, Morimoto R, Ohgo S, Wada N. Normal skeletal pattern formation in chick limb bud with a mesenchymal hole is mediated by adjustment of cellular properties along the anterior-posterior axis in the limb bud. Dev Biol 2021; 483:76-88. [PMID: 34973174 DOI: 10.1016/j.ydbio.2021.12.016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2021] [Revised: 12/12/2021] [Accepted: 12/26/2021] [Indexed: 11/18/2022]
Abstract
The chick limb bud has plasticity to reconstruct a normal skeletal pattern after a part of mesenchymal mass is excised to make a hole in its early stage of development. To understand the details of hole closure and re-establishment of normal limb axes to reconstruct a normal limb skeleton, we focused on cellular and molecular changes during hole repair and limb restoration. We excised a cube-shaped mass of mesenchymal cells from the medial region of chick hindlimb bud (stage 23) and observed the following morphogenesis. The hole had closed by 15 h after excision, followed by restoration of the limb bud morphology, and the cartilage pattern was largely restored by 48 h. Lineage analysis of the mesenchymal cells showed that cells at the anterior and posterior margins of the hole were adjoined at the hole closure site, whereas cells at the proximal and distal margins were not. To investigate cell polarity during hole repair, we analyzed intracellular positioning of the Golgi apparatus relative to the nuclei. We found that the Golgi apparatus tended to be directed toward the hole among cells at the anterior and posterior margins but not among cells at identical positions in normal limb buds or cells at the proximal and distal hole margins. In the manipulated limb buds, the frequency of cell proliferation was maintained compared with the control side. Tbx3 expression, which was usually restricted to anterior and posterior margins of the limb bud, was temporarily expanded medially and then reverted to a normal pattern as limb reconstruction proceeded, with Tbx3 negative cells reappearing in the medial regions of the limb buds. Thus, mesenchymal hole closure and limb reconstruction are mainly mediated by cells at the anterior and posterior hole margins. These results suggest that adjustment of cellular properties along the anteroposterior axis is crucial to restore limb damage and reconstruct normal skeletal patterns.
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Affiliation(s)
- Yuki Sato
- Department of Applied Biological Science, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba, 278-8510, Japan
| | - Momoko Fujiwara
- Department of Applied Biological Science, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba, 278-8510, Japan
| | - Haruka Nishino
- Department of Applied Biological Science, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba, 278-8510, Japan
| | - Rei Harada
- Department of Applied Biological Science, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba, 278-8510, Japan
| | - Eriko Kawasaki
- Department of Applied Biological Science, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba, 278-8510, Japan
| | - Ryo Morimoto
- Department of Applied Biological Science, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba, 278-8510, Japan
| | - Shiro Ohgo
- Department of Applied Biological Science, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba, 278-8510, Japan
| | - Naoyuki Wada
- Department of Applied Biological Science, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba, 278-8510, Japan.
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18
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Peris-Sampedro F, Le May MV, Stoltenborg I, Schéle E, Dickson SL. A skeleton in the cupboard in ghrelin research: Where are the skinny dwarfs? J Neuroendocrinol 2021; 33:e13025. [PMID: 34427011 DOI: 10.1111/jne.13025] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/30/2021] [Revised: 07/09/2021] [Accepted: 08/05/2021] [Indexed: 12/15/2022]
Abstract
Based on studies delivering ghrelin or ghrelin receptor agonists, we have learned a great deal about the importance of the brain ghrelin signalling system for a wide range of physiological processes that include feeding behaviours, growth hormone secretion and glucose homeostasis. Because these processes can be considered as essential to life, the question arises as to why mouse models of depleted ghrelin signalling are not all skinny dwarfs with a host of behavioural and metabolic problems. Here, we provide a systematic detailed review of the phenotype of mice with deficient ghrelin signalling to help better understand the relevance and importance of the brain ghrelin signalling system, with a particular emphasis on those questions that remain unanswered.
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Affiliation(s)
- Fiona Peris-Sampedro
- Department of Physiology/Endocrine, Institute of Neuroscience and Physiology, The Sahlgrenska Academy at the University of Gothenburg, Gothenburg, Sweden
| | - Marie V Le May
- Department of Physiology/Endocrine, Institute of Neuroscience and Physiology, The Sahlgrenska Academy at the University of Gothenburg, Gothenburg, Sweden
| | - Iris Stoltenborg
- Department of Physiology/Endocrine, Institute of Neuroscience and Physiology, The Sahlgrenska Academy at the University of Gothenburg, Gothenburg, Sweden
| | - Erik Schéle
- Department of Physiology/Endocrine, Institute of Neuroscience and Physiology, The Sahlgrenska Academy at the University of Gothenburg, Gothenburg, Sweden
| | - Suzanne L Dickson
- Department of Physiology/Endocrine, Institute of Neuroscience and Physiology, The Sahlgrenska Academy at the University of Gothenburg, Gothenburg, Sweden
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Zheng X, Yan J, You W, Li F, Diao J, He W, Yao Y. De Novo Nano-Erythrocyte Structurally Braced by Biomimetic Au(I)-peptide Skeleton for MDM2/MDMX Predation toward Augmented Pulmonary Adenocarcinoma Immunotherapy. Small 2021; 17:e2100394. [PMID: 33870652 DOI: 10.1002/smll.202100394] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/20/2021] [Revised: 03/30/2021] [Indexed: 06/12/2023]
Abstract
In nature, cells rely on a structural framework called the "cytoskeleton" to maintain their shape and polarity. Based on this, herein a new class of cell-mimicking nanomedicine using bionic skeletons constituted by the oligomeric Au(I)-peptide complex is developed. The peptide function of degrading pathological MDM2 and MDMX is used to synthesize an oligomeric Au(I)-PMIV precursor capable of self-assembling into a clustered spherical bionic skeleton. Through coating by erythrocyte membrane, an erythrocyte-mimicking nano-cell (Nery-PMIV) is developed with depressed macrophage uptakes, increased colloidal stability, and prolonged blood circulation. Nery-PMIV potently restores p53 and p73 in vitro and in vivo by degrading MDM2/MDMX. More importantly, Nery-PMIV effectively augments antitumor immunity elicited by anti-PD1 therapy in a murine orthotopic allograft model for LUAD and a humanized patient-derived xenograft (PDX) mouse model for LUAD, while maintaining a favorable safety profile. Taken together, this work not only presents evidence showing that MDM2/MDMX degradation is a potentially viable therapeutic paradigm to synergize anti-PD1 immunotherapy toward LUAD carrying wild-type p53; it also suggests that cell-mimicking nanoparticles with applicable bionic skeletons hold tremendous promise in offering new therapies to revolutionize nanomedicine in the treatment of a myriad of human diseases.
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Affiliation(s)
- Xiaoqiang Zheng
- Department of Medical Oncology, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, 710061, China
| | - Jin Yan
- National & Local Joint Engineering Research Center of Biodiagnosis and Biotherapy, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, 710004, China
| | - Weiming You
- National & Local Joint Engineering Research Center of Biodiagnosis and Biotherapy, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, 710004, China
| | - Fanni Li
- Department of Talent Highland, The First Affiliated Hospital of Xi'an Jiao Tong University, Xi'an, 710061, China
| | - Jiajie Diao
- Department of Cancer Biology, University of Cincinnati College of Medicine, Cincinnati, OH, 45267, USA
| | - Wangxiao He
- Department of Talent Highland, The First Affiliated Hospital of Xi'an Jiao Tong University, Xi'an, 710061, China
- Institute for Stem Cell & Regenerative Medicine, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, 710004, China
| | - Yu Yao
- Department of Medical Oncology, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, 710061, China
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20
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Craft CS, Robles H, Lorenz MR, Hilker ED, Magee KL, Andersen TL, Cawthorn WP, MacDougald OA, Harris CA, Scheller EL. Bone marrow adipose tissue does not express UCP1 during development or adrenergic-induced remodeling. Sci Rep 2019; 9:17427. [PMID: 31758074 PMCID: PMC6874537 DOI: 10.1038/s41598-019-54036-x] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2019] [Accepted: 10/24/2019] [Indexed: 12/31/2022] Open
Abstract
Adipocytes within the skeleton are collectively termed bone marrow adipose tissue (BMAT). BMAT contributes to peripheral and local metabolism, however, its capacity for cell-autonomous expression of uncoupling protein 1 (UCP1), a biomarker of beige and brown adipogenesis, remains unclear. To overcome this, Ucp1-Cre was used to drive diphtheria toxin expression in cells expressing UCP1 (Ucp1Cre+/DTA+). Despite loss of brown adipose tissue, BMAT volume was not reduced in Ucp1Cre+/DTA+ mice. Comparably, in mTmG reporter mice (Ucp1Cre+/mTmG+), Ucp1-Cre expression was absent from BMAT in young (3-weeks) and mature (16-weeks) male and female mice. Further, β3-agonist stimulation failed to induce Ucp1-Cre expression in BMAT. This demonstrates that BMAT adipocytes are not UCP1-expressing beige/brown adipocytes. Thus, to identify novel and emerging roles for BMAT adipocytes in skeletal and whole-body homeostasis, we performed gene enrichment analysis of microarray data from adipose tissues of adult rabbits. Pathway analysis revealed genetic evidence for differences in BMAT including insulin resistance, decreased fatty acid metabolism, and enhanced contributions to local processes including bone mineral density through candidate genes such as osteopontin. In sum, this supports a paradigm by which BMAT adipocytes are a unique subpopulation that is specialized to support cells within the skeletal and hematopoietic niche.
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Affiliation(s)
- Clarissa S Craft
- Division of Bone and Mineral Diseases, Department of Internal Medicine, Washington University School of Medicine, Saint Louis, MO, USA
- Department of Cell Biology & Physiology, Washington University School of Medicine, Saint Louis, MO, USA
| | - Hero Robles
- Division of Bone and Mineral Diseases, Department of Internal Medicine, Washington University School of Medicine, Saint Louis, MO, USA
| | - Madelyn R Lorenz
- Division of Bone and Mineral Diseases, Department of Internal Medicine, Washington University School of Medicine, Saint Louis, MO, USA
| | - Eric D Hilker
- Division of Bone and Mineral Diseases, Department of Internal Medicine, Washington University School of Medicine, Saint Louis, MO, USA
| | - Kristann L Magee
- Division of Bone and Mineral Diseases, Department of Internal Medicine, Washington University School of Medicine, Saint Louis, MO, USA
| | - Thomas L Andersen
- Department of Pathology, Odense University Hospital - Department of Clinical Research & Department Molecular Medicine, University of Southern Denmark, Odense, Denmark
- Department of Forensic Medicine, Aarhus University, Aarhus, Denmark
| | - William P Cawthorn
- University/BHF Centre for Cardiovascular Science, The Queen's Medical Research Institute, Edinburgh Bioquarter, University of Edinburgh, Edinburgh, UK
| | - Ormond A MacDougald
- Department of Molecular & Integrative Physiology, University of Michigan, Ann Arbor, MI, USA
| | - Charles A Harris
- Division of Endocrinology, Metabolism, and Lipid Research, Department of Medicine, Washington University School of Medicine, St. Louis, MO, USA
- Department of Medicine, Veterans Affairs St. Louis Healthcare System, John Cochran Division, St. Louis, MO, USA
| | - Erica L Scheller
- Division of Bone and Mineral Diseases, Department of Internal Medicine, Washington University School of Medicine, Saint Louis, MO, USA.
- Department of Cell Biology & Physiology, Washington University School of Medicine, Saint Louis, MO, USA.
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21
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Zou W, Rohatgi N, Brestoff JR, Zhang Y, Scheller EL, Craft CS, Brodt MD, Migotsky N, Silva MJ, Harris CA, Teitelbaum SL. Congenital lipodystrophy induces severe osteosclerosis. PLoS Genet 2019; 15:e1008244. [PMID: 31233501 PMCID: PMC6611650 DOI: 10.1371/journal.pgen.1008244] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2019] [Revised: 07/05/2019] [Accepted: 06/12/2019] [Indexed: 12/28/2022] Open
Abstract
Berardinelli-Seip congenital generalized lipodystrophy is associated with increased bone mass suggesting that fat tissue regulates the skeleton. Because there is little mechanistic information regarding this issue, we generated "fat-free" (FF) mice completely lacking visible visceral, subcutaneous and brown fat. Due to robust osteoblastic activity, trabecular and cortical bone volume is markedly enhanced in these animals. FF mice, like Berardinelli-Seip patients, are diabetic but normalization of glucose tolerance and significant reduction in circulating insulin fails to alter their skeletal phenotype. Importantly, the skeletal phenotype of FF mice is completely rescued by transplantation of adipocyte precursors or white or brown fat depots, indicating that adipocyte derived products regulate bone mass. Confirming such is the case, transplantation of fat derived from adiponectin and leptin double knockout mice, unlike that obtained from their WT counterparts, fails to normalize FF bone. These observations suggest a paucity of leptin and adiponectin may contribute to the increased bone mass of Berardinelli-Seip patients.
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Affiliation(s)
- Wei Zou
- Division of Anatomic and Molecular Pathology, Department of Pathology and Immunology, Washington University School of Medicine, St. Louis, MO, United States of America
| | - Nidhi Rohatgi
- Division of Anatomic and Molecular Pathology, Department of Pathology and Immunology, Washington University School of Medicine, St. Louis, MO, United States of America
| | - Jonathan R. Brestoff
- Division of Laboratory and Genomic Medicine, Department of Pathology and Immunology, Washington University School of Medicine, St. Louis, MO, United States of America
| | - Yan Zhang
- Division of Anatomic and Molecular Pathology, Department of Pathology and Immunology, Washington University School of Medicine, St. Louis, MO, United States of America
- Center for Translational Medicine, The First Affiliated Hospital of Xi’an Jiaotong University, Xi’an, Shanxi, People’s Republic of China
| | - Erica L. Scheller
- Division of Bone and Mineral Diseases, Department of Medicine, Washington University School of Medicine, St. Louis, MO, United States of America
| | - Clarissa S. Craft
- Division of Bone and Mineral Diseases, Department of Medicine, Washington University School of Medicine, St. Louis, MO, United States of America
| | - Michael D. Brodt
- Department of Orthopedic Surgery, Washington University School of Medicine, St. Louis, MO, United States of America
| | - Nicole Migotsky
- Department of Orthopedic Surgery, Washington University School of Medicine, St. Louis, MO, United States of America
| | - Matthew J. Silva
- Department of Orthopedic Surgery, Washington University School of Medicine, St. Louis, MO, United States of America
| | - Charles A. Harris
- Division of Endocrinology, Metabolism, and Lipid Research, Department of Medicine, Washington University School of Medicine, St. Louis, MO, United States of America
| | - Steven L. Teitelbaum
- Division of Anatomic and Molecular Pathology, Department of Pathology and Immunology, Washington University School of Medicine, St. Louis, MO, United States of America
- Division of Bone and Mineral Diseases, Department of Medicine, Washington University School of Medicine, St. Louis, MO, United States of America
- * E-mail:
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22
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Abstract
PURPOSE OF REVIEW We reviewed the current literature on the roles of the Wnt antagonists sclerostin (Sost) and sclerostin-containing domain protein 1 (Sostdc1) on bone homeostasis, the relationship of the hypoxia-inducible factor (Hif) and von Hippel-Lindau (Vhl) pathways on Sost expression, and how changes in bone induced by depletion of Sost, Sostdc1, and Vhl affect hematopoietic cells. RECENT FINDINGS B cell development is adversely affected in Sost-knockout mice and is more severely affected in Vhl-knockout mice. Inflammation in the Sost-/- bone microenvironment could alter hematopoietic stem cell behavior. Sostdc1-/- mice display defects in natural killer cell development and cytotoxicity. Depletion of Sost and Sostdc1 have effects on immune cell function that warrant investigation in patients receiving Wnt antagonist-depleting therapies for treatment of bone diseases. Additional clinical applications for manipulation of Wnt antagonists include cancer immunotherapies, stem cell transplantation, and directed differentiation to immune lineages.
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Affiliation(s)
- Betsabel Chicana
- Quantitative and Systems Biology Graduate Program, University of California, Merced, CA, USA
| | - Cristine Donham
- Quantitative and Systems Biology Graduate Program, University of California, Merced, CA, USA
| | - Alberto J Millan
- Quantitative and Systems Biology Graduate Program, University of California, Merced, CA, USA
| | - Jennifer O Manilay
- Quantitative and Systems Biology Graduate Program, University of California, Merced, CA, USA.
- Department of Molecular and Cell Biology, School of Natural Sciences, University of California, 5200 North Lake Road, Merced, CA, 95343, USA.
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23
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Nakatomi C, Nakatomi M, Matsubara T, Komori T, Doi-Inoue T, Ishimaru N, Weih F, Iwamoto T, Matsuda M, Kokabu S, Jimi E. Constitutive activation of the alternative NF-κB pathway disturbs endochondral ossification. Bone 2019; 121:29-41. [PMID: 30611922 DOI: 10.1016/j.bone.2019.01.002] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/09/2018] [Revised: 12/28/2018] [Accepted: 01/02/2019] [Indexed: 01/29/2023]
Abstract
Endochondral ossification is important for skeletal development. Recent findings indicate that the p65 (RelA) subunit, a main subunit of the classical nuclear factor-κB (NF-κB) pathway, plays essential roles in chondrocyte differentiation. Although several groups have reported that the alternative NF-κB pathway also regulates bone homeostasis, the role of the alternative NF-κB pathway in chondrocyte development is still unclear. Here, we analyzed the in vivo function of the alternative pathway on endochondral ossification using p100-deficient (p100-/-) mice, which carry a homozygous deletion of the COOH-terminal ankyrin repeats of p100 but still express functional p52 protein. The alternative pathway was activated during the periarticular stage in wild-type mice. p100-/- mice exhibited dwarfism, and histological analysis of the growth plate revealed abnormal arrangement of chondrocyte columns and a narrowed hypertrophic zone. Consistent with these observations, the expression of hypertrophic chondrocyte markers, type X collagen (ColX) or matrix metalloproteinase 13, but not early chondrogenic markers, such as Col II or aggrecan, was suppressed in p100-/- mice. An in vivo BrdU tracing assay clearly demonstrated less proliferative activity in chondrocytes in p100-/- mice. These defects were partly rescued when the RelB gene was deleted in p100-/- mice. Taken together, the alternative NF-κB pathway may regulate chondrocyte proliferation and differentiation to maintain endochondral ossification.
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Affiliation(s)
- Chihiro Nakatomi
- Division of Molecular Signaling and Biochemistry, Kyushu Dental University, 2-6-1 Manazuru, Kokurakita-kux, Kitakyushu 803-8580, Japan
| | - Mitsushiro Nakatomi
- Division of Anatomy, Department of Health Improvement, Kyushu Dental University, 2-6-1 Manazuru, Kokurakita-ku, Kitakyushu 803-8580, Japan
| | - Takuma Matsubara
- Division of Molecular Signaling and Biochemistry, Kyushu Dental University, 2-6-1 Manazuru, Kokurakita-kux, Kitakyushu 803-8580, Japan
| | - Toshihisa Komori
- Department of Cell Biology, Unit of Basic Medical Sciences, Nagasaki University Graduate School of Biomedical Sciences, 1-7-1 Sakamoto, Nagasaki 852-8588, Japan
| | | | - Naozumi Ishimaru
- Department of Oral Molecular Pathology, Tokushima University Graduate School of Biomedical Sciences, 3-18-15 Kuramoto, Tokushima 770-8504, Japan
| | - Falk Weih
- Research Group Immunology, Leibniz-Institute on Aging - Fritz Lipmann Institute, Beutenbergstrasse 11, Jena 07745, Germany
| | - Tsutomu Iwamoto
- Department of Pediatric Dentistry, Tokushima University Graduate School of Biomedical Sciences, 3-18-15 Kuramoto, Tokushima 770-8504, Japan
| | - Miho Matsuda
- Laboratory of Molecular and Cellular Biochemistry, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka 812-8582, Japan
| | - Shoichiro Kokabu
- Division of Molecular Signaling and Biochemistry, Kyushu Dental University, 2-6-1 Manazuru, Kokurakita-kux, Kitakyushu 803-8580, Japan
| | - Eijiro Jimi
- Division of Molecular Signaling and Biochemistry, Kyushu Dental University, 2-6-1 Manazuru, Kokurakita-kux, Kitakyushu 803-8580, Japan; Laboratory of Molecular and Cellular Biochemistry, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka 812-8582, Japan; Oral Health/Brain Health/Total Health Research Center, Faculty of Dental Science, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka 812-8582, Japan.
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24
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Abstract
PURPOSE OF REVIEW The receptor for advanced glycation end products (RAGE) and several of its ligands have been implicated in the onset and progression of pathologies associated with aging, chronic inflammation, and cellular stress. In particular, the role of RAGE and its ligands in bone tissue during both physiological and pathological conditions has been investigated. However, the extent to which RAGE signaling regulates bone homeostasis and disease onset remains unclear. Further, RAGE effects in the different bone cells and whether these effects are cell-type specific is unknown. The objective of the current review is to describe the literature over RAGE signaling in skeletal biology as well as discuss the clinical potential of RAGE as a diagnostic and/or therapeutic target in bone disease. RECENT FINDINGS The role of RAGE and its ligands during skeletal homeostasis, tissue repair, and disease onset/progression is beginning to be uncovered. For example, detrimental effects of the RAGE ligands, advanced glycation end products (AGEs), have been identified for osteoblast viability/activity, while others have observed that low level AGE exposure stimulates osteoblast autophagy, which subsequently promotes viability and function. Similar findings have been reported with HMGB1, another RAGE ligand, in which high levels of the ligand are associated with osteoblast/osteocyte apoptosis, whereas low level/short-term administration stimulates osteoblast differentiation/bone formation and promotes fracture healing. Additionally, elevated levels of several RAGE ligands (AGEs, HMGB1, S100 proteins) induce osteoblast/osteocyte apoptosis and stimulate cytokine production, which is associated with increased osteoclast differentiation/activity. Conversely, direct RAGE-ligand exposure in osteoclasts may have inhibitory effects. These observations support a conclusion that elevated bone resorption observed in conditions of high circulating ligands and RAGE expression are due to actions on osteoblasts/osteocytes rather than direct actions on osteoclasts, although additional work is required to substantiate the observations. Recent studies have demonstrated that RAGE and its ligands play an important physiological role in the regulation of skeletal development, homeostasis, and repair/regeneration. Conversely, elevated levels of RAGE and its ligands are clearly related with various diseases associated with increased bone loss and fragility. However, despite the recent advancements in the field, many questions regarding RAGE and its ligands in skeletal biology remain unanswered.
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Affiliation(s)
- Lilian I Plotkin
- Department of Anatomy and Cell Biology, Indiana University School of Medicine, 635 Barnhill Dr., MS 5023, Indianapolis, IN, 46202, USA.
- Roudebush Veterans Administration Medical Center, Indianapolis, IN, USA.
- Indiana Center for Musculoskeletal Health, Indianapolis, IN, USA.
| | - Alyson L Essex
- Department of Anatomy and Cell Biology, Indiana University School of Medicine, 635 Barnhill Dr., MS 5023, Indianapolis, IN, 46202, USA
- Indiana Center for Musculoskeletal Health, Indianapolis, IN, USA
| | - Hannah M Davis
- Department of Anatomy and Cell Biology, Indiana University School of Medicine, 635 Barnhill Dr., MS 5023, Indianapolis, IN, 46202, USA
- Indiana Center for Musculoskeletal Health, Indianapolis, IN, USA
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25
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Noguchi T, Hussein AI, Horowitz N, Carroll D, Gower AC, Demissie S, Gerstenfeld LC. Hypophosphatemia Regulates Molecular Mechanisms of Circadian Rhythm. Sci Rep 2018; 8:13756. [PMID: 30213970 PMCID: PMC6137060 DOI: 10.1038/s41598-018-31830-7] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2018] [Accepted: 08/13/2018] [Indexed: 12/31/2022] Open
Abstract
Transcriptomic analysis showed that the central circadian pathway genes had significantly altered expression in fracture calluses from mice fed a low phosphate diet. This led us to hypothesize that phosphate deficiency altered the circadian cycle in peripheral tissues. Analysis of the expression of the central clock genes over a 24-36 hour period in multiple peripheral tissues including fracture callus, proximal tibia growth plate and cardiac tissues after 12 days on a low phosphate diet showed higher levels of gene expression in the hypophosphatemia groups (p < 0.001) and a 3 to 6 hour elongation of the circadian cycle. A comparative analysis of the callus tissue transcriptome genes that were differentially regulated by hypophosphatemia with published data for the genes in bone that are diurnally regulated identified 1879 genes with overlapping differential regulation, which were shown by ontology assessment to be associated with oxidative metabolism and apoptosis. Network analysis of the central circadian pathway genes linked their expression to the up regulated expression of the histone methyltransferase gene EZH2, a gene that when mutated in both humans and mice controls overall skeletal growth. These data suggest that phosphate is an essential metabolite that controls circadian function in both skeletal and non skeletal peripheral tissues and associates its levels with the overall oxidative metabolism and skeletal growth of animals.
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Affiliation(s)
- Takashi Noguchi
- Orthopaedic Research Laboratory, Department of Orthopaedic Surgery, Boston University School of Medicine, Boston, USA
| | - Amira I Hussein
- Orthopaedic Research Laboratory, Department of Orthopaedic Surgery, Boston University School of Medicine, Boston, USA
| | - Nina Horowitz
- Orthopaedic Research Laboratory, Department of Orthopaedic Surgery, Boston University School of Medicine, Boston, USA
| | - Deven Carroll
- Orthopaedic Research Laboratory, Department of Orthopaedic Surgery, Boston University School of Medicine, Boston, USA
| | - Adam C Gower
- Clinical and Translational Science Institute, Boston University School of Medicine, Boston, USA
| | - Serkalem Demissie
- Department of Biostatistics, Boston University School of Public Health, Boston, MA, 02118, USA
| | - Louis C Gerstenfeld
- Orthopaedic Research Laboratory, Department of Orthopaedic Surgery, Boston University School of Medicine, Boston, USA.
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26
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Hachemi Y, Rapp AE, Picke AK, Weidinger G, Ignatius A, Tuckermann J. Molecular mechanisms of glucocorticoids on skeleton and bone regeneration after fracture. J Mol Endocrinol 2018; 61:R75-R90. [PMID: 29588427 PMCID: PMC5976078 DOI: 10.1530/jme-18-0024] [Citation(s) in RCA: 52] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/01/2018] [Accepted: 03/27/2018] [Indexed: 12/29/2022]
Abstract
Glucocorticoid hormones (GCs) have profound effects on bone metabolism. Via their nuclear hormone receptor - the GR - they act locally within bone cells and modulate their proliferation, differentiation, and cell death. Consequently, high glucocorticoid levels - as present during steroid therapy or stress - impair bone growth and integrity, leading to retarded growth and glucocorticoid-induced osteoporosis, respectively. Because of their profound impact on the immune system and bone cell differentiation, GCs also affect bone regeneration and fracture healing. The use of conditional-mutant mouse strains in recent research provided insights into the cell-type-specific actions of the GR. However, despite recent advances in system biology approaches addressing GR genomics in general, little is still known about the molecular mechanisms of GCs and GR in bone cells. Here, we review the most recent findings on the molecular mechanisms of the GR in general and the known cell-type-specific actions of the GR in mesenchymal cells and their derivatives as well as in osteoclasts during bone homeostasis, GC excess, bone regeneration and fracture healing.
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Affiliation(s)
- Yasmine Hachemi
- Institute of Comparative Molecular EndocrinologyUlm University, Ulm, Germany
| | - Anna E Rapp
- Institute of Orthopaedic Research and BiomechanicsUlm University Medical Centre, Ulm, Germany
| | - Ann-Kristin Picke
- Institute of Comparative Molecular EndocrinologyUlm University, Ulm, Germany
| | - Gilbert Weidinger
- Institute of Biochemistry and Molecular BiologyUlm University, Ulm, Germany
| | - Anita Ignatius
- Institute of Orthopaedic Research and BiomechanicsUlm University Medical Centre, Ulm, Germany
| | - Jan Tuckermann
- Institute of Comparative Molecular EndocrinologyUlm University, Ulm, Germany
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27
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Abstract
Insulin-like growth factor 1(IGF1) and ephrin ligand (EFN)-receptor (EPH) signaling are both crucial for bone cell function and skeletal development and maintenance. IGF1 signaling is the major mediator of growth hormone-induced bone growth, but a host of different signals and factors regulate IGF1 signaling at the systemic and local levels. Disruption of the Igf1 gene results in reduced peak bone mass in both experimental animal models and humans. Additionally, EFN-EPH signaling is a complex system which, particularly through cell-cell interactions, contributes to the development and differentiation of many bone cell types. Recent evidence has demonstrated several ways in which the IGF1 and EFN-EPH signaling pathways interact with and depend upon each other to regulate bone cell function. While much remains to be elucidated, the interaction between these two signaling pathways opens a vast array of new opportunities for investigation into the mechanisms of and potential therapies for skeletal conditions such as osteoporosis and fracture repair.
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Affiliation(s)
- Richard C Lindsey
- Musculoskeletal Disease CenterVA Loma Linda Healthcare System, Loma Linda, California, USA
- Division of BiochemistryDepartment of Basic Sciences, School of Medicine, Loma Linda University, Loma Linda, California, USA
- Center for Health Disparities and Molecular MedicineDepartment of Basic Sciences, School of Medicine, Loma Linda University, Loma Linda, California, USA
| | - Charles H Rundle
- Musculoskeletal Disease CenterVA Loma Linda Healthcare System, Loma Linda, California, USA
- Department of MedicineLoma Linda University, Loma Linda, California, USA
| | - Subburaman Mohan
- Musculoskeletal Disease CenterVA Loma Linda Healthcare System, Loma Linda, California, USA
- Division of BiochemistryDepartment of Basic Sciences, School of Medicine, Loma Linda University, Loma Linda, California, USA
- Center for Health Disparities and Molecular MedicineDepartment of Basic Sciences, School of Medicine, Loma Linda University, Loma Linda, California, USA
- Department of MedicineLoma Linda University, Loma Linda, California, USA
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28
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Abstract
The discovery of the growth hormone (GH)-mediated somatic factors (somatomedins), insulin-like growth factor (IGF)-I and -II, has elicited an enormous interest primarily among endocrinologists who study growth and metabolism. The advancement of molecular endocrinology over the past four decades enables investigators to re-examine and refine the established somatomedin hypothesis. Specifically, gene deletions, transgene overexpression or more recently, cell-specific gene-ablations, have enabled investigators to study the effects of the Igf1 and Igf2 genes in temporal and spatial manners. The GH/IGF axis, acting in an endocrine and autocrine/paracrine fashion, is the major axis controlling skeletal growth. Studies in rodents have clearly shown that IGFs regulate bone length of the appendicular skeleton evidenced by changes in chondrocytes of the proliferative and hypertrophic zones of the growth plate. IGFs affect radial bone growth and regulate cortical and trabecular bone properties via their effects on osteoblast, osteocyte and osteoclast function. Interactions of the IGFs with sex steroid hormones and the parathyroid hormone demonstrate the significance and complexity of the IGF axis in the skeleton. Finally, IGFs have been implicated in skeletal aging. Decreases in serum IGFs during aging have been correlated with reductions in bone mineral density and increased fracture risk. This review highlights many of the most relevant studies in the IGF research landscape, focusing in particular on IGFs effects on the skeleton.
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Affiliation(s)
- Shoshana Yakar
- David B. Kriser Dental Center, Department of Basic Science and Craniofacial Biology, New York University College of Dentistry, New York, NY 10010-4086, USA
| | - Haim Werner
- Department of Human Molecular Genetics and Biochemistry, Sackler School of Medicine, Tel Aviv University, Tel Aviv 69978, Israel
| | - Clifford J Rosen
- Maine Medical Center Research Institute, Scarborough, Maine 04074, USA
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29
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Iezaki T, Horie T, Fukasawa K, Kitabatake M, Nakamura Y, Park G, Onishi Y, Ozaki K, Kanayama T, Hiraiwa M, Kitaguchi Y, Kaneda K, Manabe T, Ishigaki Y, Ohno M, Hinoi E. Translational Control of Sox9 RNA by mTORC1 Contributes to Skeletogenesis. Stem Cell Reports 2018; 11:228-241. [PMID: 30008325 PMCID: PMC6117477 DOI: 10.1016/j.stemcr.2018.05.020] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2018] [Revised: 05/31/2018] [Accepted: 05/31/2018] [Indexed: 11/18/2022] Open
Abstract
The mechanistic/mammalian target of rapamycin complex 1 (mTORC1) regulates cellular function in various cell types. Although the role of mTORC1 in skeletogenesis has been investigated previously, here we show a critical role of mTORC1/4E-BPs/SOX9 axis in regulating skeletogenesis through its expression in undifferentiated mesenchymal cells. Inactivation of Raptor, a component of mTORC1, in limb buds before mesenchymal condensations resulted in a marked loss of both cartilage and bone. Mechanistically, we demonstrated that mTORC1 selectively controls the RNA translation of Sox9, which harbors a 5′ terminal oligopyrimidine tract motif, via inhibition of the 4E-BPs. Indeed, introduction of Sox9 or a knockdown of 4E-BP1/2 in undifferentiated mesenchymal cells markedly rescued the deficiency of the condensation observed in Raptor-deficient mice. Furthermore, introduction of the Sox9 transgene rescued phenotypes of deficient skeletal growth in Raptor-deficient mice. These findings highlight a critical role of mTORC1 in mammalian skeletogenesis, at least in part, through translational control of Sox9 RNA. mTORC1 controls skeletogenesis both in skeletogenic progenitors and in chondrocytes mTORC1/4E-BPs cascade regulates the translation of Sox9 RNA SOX9 is a critical mediator in the control of skeletogenesis by mTORC1 in vivo
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Affiliation(s)
- Takashi Iezaki
- Laboratory of Molecular Pharmacology, Division of Pharmaceutical Sciences, Kanazawa University Graduate School, Kakuma-machi, Kanazawa, Ishikawa 920-1192, Japan; Venture Business Laboratory, Organization of Frontier Science and Innovation, Kanazawa University, Kanazawa, Ishikawa 920-1192, Japan
| | - Tetsuhiro Horie
- Laboratory of Molecular Pharmacology, Division of Pharmaceutical Sciences, Kanazawa University Graduate School, Kakuma-machi, Kanazawa, Ishikawa 920-1192, Japan
| | - Kazuya Fukasawa
- Laboratory of Molecular Pharmacology, Division of Pharmaceutical Sciences, Kanazawa University Graduate School, Kakuma-machi, Kanazawa, Ishikawa 920-1192, Japan
| | - Makoto Kitabatake
- Institute for Virus Research, Kyoto University, Kyoto 606-8507, Japan
| | - Yuka Nakamura
- Medical Research Institute, Kanazawa Medical University, Kahoku, Ishikawa 920-0293, Japan
| | - Gyujin Park
- Laboratory of Molecular Pharmacology, Division of Pharmaceutical Sciences, Kanazawa University Graduate School, Kakuma-machi, Kanazawa, Ishikawa 920-1192, Japan
| | - Yuki Onishi
- Laboratory of Molecular Pharmacology, Division of Pharmaceutical Sciences, Kanazawa University Graduate School, Kakuma-machi, Kanazawa, Ishikawa 920-1192, Japan
| | - Kakeru Ozaki
- Laboratory of Molecular Pharmacology, Division of Pharmaceutical Sciences, Kanazawa University Graduate School, Kakuma-machi, Kanazawa, Ishikawa 920-1192, Japan
| | - Takashi Kanayama
- Laboratory of Molecular Pharmacology, Division of Pharmaceutical Sciences, Kanazawa University Graduate School, Kakuma-machi, Kanazawa, Ishikawa 920-1192, Japan
| | - Manami Hiraiwa
- Laboratory of Molecular Pharmacology, Division of Pharmaceutical Sciences, Kanazawa University Graduate School, Kakuma-machi, Kanazawa, Ishikawa 920-1192, Japan
| | - Yuka Kitaguchi
- Laboratory of Molecular Pharmacology, Division of Pharmaceutical Sciences, Kanazawa University Graduate School, Kakuma-machi, Kanazawa, Ishikawa 920-1192, Japan
| | - Katsuyuki Kaneda
- Laboratory of Molecular Pharmacology, Division of Pharmaceutical Sciences, Kanazawa University Graduate School, Kakuma-machi, Kanazawa, Ishikawa 920-1192, Japan
| | - Takayuki Manabe
- Department of Neuroanatomy and Neuropharmacology, Faculty of Nursing, Chukyogakuin University, Mizunami, Gifu 509-6192, Japan
| | - Yasuhito Ishigaki
- Medical Research Institute, Kanazawa Medical University, Kahoku, Ishikawa 920-0293, Japan
| | - Mutsuhito Ohno
- Institute for Virus Research, Kyoto University, Kyoto 606-8507, Japan
| | - Eiichi Hinoi
- Laboratory of Molecular Pharmacology, Division of Pharmaceutical Sciences, Kanazawa University Graduate School, Kakuma-machi, Kanazawa, Ishikawa 920-1192, Japan.
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30
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Ehrlich H, Shaala LA, Youssef DTA, Żółtowska- Aksamitowska S, Tsurkan M, Galli R, Meissner H, Wysokowski M, Petrenko I, Tabachnick KR, Ivanenko VN, Bechmann N, Joseph Y, Jesionowski T. Discovery of chitin in skeletons of non-verongiid Red Sea demosponges. PLoS One 2018; 13:e0195803. [PMID: 29763421 PMCID: PMC5953452 DOI: 10.1371/journal.pone.0195803] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2018] [Accepted: 03/29/2018] [Indexed: 11/18/2022] Open
Abstract
Marine demosponges (Porifera: Demospongiae) are recognized as first metazoans which have developed over millions of years of evolution effective survival strategies based on unique metabolic pathways to produce both biologically active secondary metabolites and biopolymer-based stiff skeletons with 3D architecture. Up to date, among marine demosponges, only representatives of the Verongiida order have been known to synthetize biologically active substances as well as skeletons made of structural polysaccharide chitin. This work, to our knowledge, demonstrates for the first time that chitin is an important structural component within skeletons of non-verongiid demosponges Acarnus wolffgangi and Echinoclathria gibbosa collected in the Red Sea. Calcofluor white staining, FTIR and Raman analysis, ESI-MS, SEM, and fluorescence microscopy as well as a chitinase digestion assay were applied in order to confirm, with strong evidence, the finding of α-chitin in the skeleton of both species. We suggest that, the finding of chitin within these representatives of Poecilosclerida order is a promising step in the evaluation of these sponges as novel renewable sources for both biologically active metabolites and chitin, which are of prospective application for pharmacology and biomedicine.
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Affiliation(s)
- Hermann Ehrlich
- Institute of Experimental Physics, TU Bergakademie Freiberg, Freiberg, Germany
| | - Lamiaa A. Shaala
- Natural Products Unit, King Fahd Medical Research Center, King Abdulaziz University, Jeddah, Saudi Arabia
- Suez Canal University Hospital, Suez Canal University, Ismailia, Egypt
| | - Diaa T. A. Youssef
- Department of Pharmacognosy, Faculty of Pharmacy, Suez Canal University, Ismailia, Egypt
- Department of Natural Products, Faculty of Pharmacy, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Sonia Żółtowska- Aksamitowska
- Institute of Chemical Technology and Engineering, Faculty of Chemical Technology Poznan University of Technology, Poznan, Poland
| | - Mikhail Tsurkan
- Leibniz Institute of Polymer Research Dresden, Dresden, Germany
| | - Roberta Galli
- Clinical Sensoring and Monitoring, Department of Anesthesiology and Intensive Care Medicine, Faculty of Medicine Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany
| | - Heike Meissner
- Department of Prosthetic Dentistry, Faculty of Medicine and University Hospital Carl Gustav Carus of Technische Universität Dresden, Dresden, Germany
| | - Marcin Wysokowski
- Institute of Chemical Technology and Engineering, Faculty of Chemical Technology Poznan University of Technology, Poznan, Poland
| | - Iaroslav Petrenko
- Institute of Experimental Physics, TU Bergakademie Freiberg, Freiberg, Germany
| | | | - Viatcheslav N. Ivanenko
- Department of Invertebrate Zoology, Biological Faculty, Lomonosov Moscow State University, Moscow, Russia
| | - Nicole Bechmann
- Institute of Clinical Chemistry and Laboratory Medicine, University Hospital Carl Gustav Carus, Faculty of Medicine Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany
| | - Yvonne Joseph
- Institute of Electronics and Sensor Materials, TU Bergakademie Freiberg, Freiberg, Germany
| | - Teofil Jesionowski
- Institute of Chemical Technology and Engineering, Faculty of Chemical Technology Poznan University of Technology, Poznan, Poland
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31
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Del Prete S, Vullo D, Zoccola D, Tambutté S, Supuran CT, Capasso C. Activation Profile Analysis of CruCA4, an α-Carbonic Anhydrase Involved in Skeleton Formation of the Mediterranean Red Coral, Corallium rubrum. Molecules 2017; 23:molecules23010066. [PMID: 29283417 PMCID: PMC6017236 DOI: 10.3390/molecules23010066] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2017] [Revised: 12/21/2017] [Accepted: 12/27/2017] [Indexed: 11/16/2022] Open
Abstract
CruCA4, a coral α-carbonic anhydrase (CA, EC 4.2.1.1) involved in the biomineralization process of the Mediterranean red coral, Corallium rubrum, was investigated for its activation with a panel of amino acids and amines. Most compounds showed considerable activating properties, with a rather well defined structure-activity relationship. The most effective CruCA4 activators were d-His, 4-H₂N-l-Phe, Histamine, Dopamine, Serotonin, 1-(2-Aminoethyl)-piperazine, and l-Adrenaline, with activation constants in the range of 8-98 nM. Other amines and amino acids, such as d-DOPA, l-Tyr, 2-Pyridyl-methylamine, 2-(2-Aminoethyl) pyridine and 4-(2-Aminoethyl)-morpholine, were submicromolar CruCA4 activators, with KA ranging between 0.15 and 0.93 µM. Since it has been shown that CA activators may facilitate the initial phases of in-bone mineralization, our study may be relevant for finding modulators of enzyme activity, which can enhance the formation of the red coral skeleton.
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Affiliation(s)
- Sonia Del Prete
- Istituto di Bioscienze e Biorisorse, CNR, Via Pietro Castellino 111, 80131 Napoli, Italy.
| | - Daniela Vullo
- Dipartimento Di Chimica, Laboratorio di Chimica Bioinorganica, Università degli Studi di Firenze, Polo Scientifico, Via della Lastruccia 3, 50019 Sesto Fiorentino (Florence), Italy.
| | - Didier Zoccola
- Centre Scientifique de Monaco, 8 Quai Antoine 1°, 98000 Monaco, Monaco.
| | - Sylvie Tambutté
- Centre Scientifique de Monaco, 8 Quai Antoine 1°, 98000 Monaco, Monaco.
| | - Claudiu T Supuran
- Dipartimento Neurofarba, Sezione di Scienze Farmaceutiche e Nutraceutiche, Università degli Studi di Firenze, Via U. Schiff 6, 50019 Sesto Fiorentino (Florence), Italy.
| | - Clemente Capasso
- Istituto di Bioscienze e Biorisorse, CNR, Via Pietro Castellino 111, 80131 Napoli, Italy.
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32
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Müller WEG, Schröder HC, Wang X. The Understanding of the Metazoan Skeletal System, Based on the Initial Discoveries with Siliceous and Calcareous Sponges. Mar Drugs 2017; 15:E172. [PMID: 28604622 PMCID: PMC5484122 DOI: 10.3390/md15060172] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2017] [Revised: 06/03/2017] [Accepted: 06/08/2017] [Indexed: 12/25/2022] Open
Abstract
Initiated by studies on the mechanism of formation of the skeletons of the evolutionary oldest still extant multicellular animals, the sponges (phylum Porifera) have provided new insights into the mechanism of formation of the Ca-phosphate/hydroxyapatite skeleton of vertebrate bone. Studies on the formation of the biomineral skeleton of sponges revealed that both the formation of the inorganic siliceous skeletons (sponges of the class of Hexactinellida and Demospongiae) and of the calcareous skeletons (class of Calcarea) is mediated by enzymes (silicatein: polymerization of biosilica; and carbonic anhydrase: deposition of Ca-carbonate). Detailed studies of the initial mineralization steps in human bone-forming cells showed that this process is also controlled by enzymes, starting with the deposition of Ca-carbonate bio-seeds, mediated by carbonic anhydrases-II and -IX, followed by non-enzymatic transformation of the formed amorphous Ca-carbonate deposits into amorphous Ca-phosphate and finally hydroxyapatite crystals. The required phosphate is provided by enzymatic (alkaline phosphatase-mediated) degradation of an inorganic polymer, polyphosphate (polyP), which also acts as a donor for chemically useful energy in this process. These new discoveries allow the development of novel biomimetic strategies for treatment of bone diseases and defects.
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Affiliation(s)
- Werner E G Müller
- ERC Advanced Investigator Grant Research Group at the Institute for Physiological Chemistry, University Medical Center of the Johannes Gutenberg University, Duesbergweg 6, D-55128 Mainz, Germany.
| | - Heinz C Schröder
- ERC Advanced Investigator Grant Research Group at the Institute for Physiological Chemistry, University Medical Center of the Johannes Gutenberg University, Duesbergweg 6, D-55128 Mainz, Germany.
| | - Xiaohong Wang
- ERC Advanced Investigator Grant Research Group at the Institute for Physiological Chemistry, University Medical Center of the Johannes Gutenberg University, Duesbergweg 6, D-55128 Mainz, Germany.
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33
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Raphael B, Gabet Y. The skeletal endocannabinoid system: clinical and experimental insights. J Basic Clin Physiol Pharmacol 2017; 27:237-45. [PMID: 26457774 DOI: 10.1515/jbcpp-2015-0073] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2015] [Accepted: 09/07/2015] [Indexed: 12/17/2022]
Abstract
Recently, there has been a rapidly growing interest in the role of cannabinoids in the regulation of skeletal remodeling and bone mass, addressed in basic, translational and clinical research. Since the first publications in 2005, there are more than 1000 publications addressing the skeletal endocannabinoid system. This review focuses on the roles of the endocannabinoid system in skeletal biology via the cannabinoid receptors CB1, CB2 and others. Endocannabinoids play important roles in bone formation, bone resorption and skeletal growth, and are sometimes age, gender, species and strain dependent. Controversies in the literature and potential therapeutic approaches targeting the endocannabinoid system in skeletal disorders are also discussed.
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34
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Chen H, Capellini TD, Schoor M, Mortlock DP, Reddi AH, Kingsley DM. Heads, Shoulders, Elbows, Knees, and Toes: Modular Gdf5 Enhancers Control Different Joints in the Vertebrate Skeleton. PLoS Genet 2016; 12:e1006454. [PMID: 27902701 PMCID: PMC5130176 DOI: 10.1371/journal.pgen.1006454] [Citation(s) in RCA: 51] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2016] [Accepted: 11/02/2016] [Indexed: 11/18/2022] Open
Abstract
Synovial joints are crucial for support and locomotion in vertebrates, and are the frequent site of serious skeletal defects and degenerative diseases in humans. Growth and differentiation factor 5 (Gdf5) is one of the earliest markers of joint formation, is required for normal joint development in both mice and humans, and has been genetically linked to risk of common osteoarthritis in Eurasian populations. Here, we systematically survey the mouse Gdf5 gene for regulatory elements controlling expression in synovial joints. We identify separate regions of the locus that control expression in axial tissues, in proximal versus distal joints in the limbs, and in remarkably specific sub-sets of composite joints like the elbow. Predicted transcription factor binding sites within Gdf5 regulatory enhancers are required for expression in particular joints. The multiple enhancers that control Gdf5 expression in different joints are distributed over a hundred kilobases of DNA, including regions both upstream and downstream of Gdf5 coding exons. Functional rescue tests in mice confirm that the large flanking regions are required to restore normal joint formation and patterning. Orthologs of these enhancers are located throughout the large genomic region previously associated with common osteoarthritis risk in humans. The large array of modular enhancers for Gdf5 provide a new foundation for studying the spatial specificity of joint patterning in vertebrates, as well as new candidates for regulatory regions that may also influence osteoarthritis risk in human populations. Joints, such as the hip and knee, are crucial for support and locomotion in animals, and are the frequent sites of serious human diseases such as arthritis. The Growth and differentiation factor 5 (Gdf5) gene is required for normal joint formation, and has been linked to risk of common arthritis in Eurasians. Here, we surveyed the mouse gene for the regulatory information that controls Gdf5's expression pattern in stripes at sites of joint formation. The gene does not have a single regulatory sequence that drives expression in all joints. Instead, Gdf5 has multiple different control sequences that show striking specificity for joints in the head, vertebral column, shoulder, elbow, wrist, hip, knee, and digits. Rescue experiments show that multiple control sequences are required to restore normal joint formation in Gdf5 mutants. The joint control sequences originally found in mice are also present in humans, where they are marked as active regions during fetal development and post-natal life, and map to a large region associated with arthritis risk in human populations. Regulatory variants in the human GDF5 control sequences can now be studied for their potential role in altering joint development or disease risk at particular locations in the skeleton.
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Affiliation(s)
- Hao Chen
- Department of Developmental Biology, Beckman Center B300, Stanford University School of Medicine, Stanford, California, United States of America
| | - Terence D. Capellini
- Department of Developmental Biology, Beckman Center B300, Stanford University School of Medicine, Stanford, California, United States of America
- Human Evolutionary Biology, Peabody Museum, Harvard University, Cambridge, Massachusetts, United States of America
- Broad Institute of MIT and Harvard, Cambridge, Massachusetts, United States of America
| | | | - Doug P. Mortlock
- Molecular Physiology and Biophysics and Vanderbilt Genetics Institute, Vanderbilt University, Nashville, Tennessee, United States of America
| | - A. Hari Reddi
- Center for Tissue Regeneration and Repair, University of California Davis Medical Center, Sacramento, California, United States of America
| | - David M. Kingsley
- Department of Developmental Biology, Beckman Center B300, Stanford University School of Medicine, Stanford, California, United States of America
- Howard Hughes Medical Institute, Stanford University, Stanford, California, United States of America
- * E-mail:
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35
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Liu JM, Rosen CJ, Ducy P, Kousteni S, Karsenty G. Regulation of Glucose Handling by the Skeleton: Insights From Mouse and Human Studies. Diabetes 2016; 65:3225-3232. [PMID: 27959858 PMCID: PMC5860442 DOI: 10.2337/db16-0053] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/11/2016] [Accepted: 08/09/2016] [Indexed: 01/07/2023]
Affiliation(s)
- Jian-Min Liu
- Department of Endocrine and Metabolic Disease, Rui-jin Hospital, Shanghai Jiao-tong University School of Medicine, and Shanghai Institute of Endocrine and Metabolic Disease, Shanghai Clinical Center for Endocrine and Metabolic Disease, Shanghai, China
| | - Clifford J Rosen
- Tufts University School of Medicine, Maine Medical Center Research Institute, Scarborough, ME
| | - Patricia Ducy
- Department of Pathology and Cell Biology, Columbia University, New York, NY
| | - Stavroula Kousteni
- Department of Physiology and Cellular Biophysics, Columbia University, New York, NY
| | - Gerard Karsenty
- Department of Genetics and Development, Columbia University, New York, NY
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36
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Germer J, Mann K, Wörheide G, Jackson DJ. The Skeleton Forming Proteome of an Early Branching Metazoan: A Molecular Survey of the Biomineralization Components Employed by the Coralline Sponge Vaceletia Sp. PLoS One 2015; 10:e0140100. [PMID: 26536128 PMCID: PMC4633127 DOI: 10.1371/journal.pone.0140100] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2015] [Accepted: 09/22/2015] [Indexed: 01/09/2023] Open
Abstract
The ability to construct a mineralized skeleton was a major innovation for the Metazoa during their evolution in the late Precambrian/early Cambrian. Porifera (sponges) hold an informative position for efforts aimed at unraveling the origins of this ability because they are widely regarded to be the earliest branching metazoans, and are among the first multi-cellular animals to display the ability to biomineralize in the fossil record. Very few biomineralization associated proteins have been identified in sponges so far, with no transcriptome or proteome scale surveys yet available. In order to understand what genetic repertoire may have been present in the last common ancestor of the Metazoa (LCAM), and that may have contributed to the evolution of the ability to biocalcify, we have studied the skeletal proteome of the coralline demosponge Vaceletia sp. and compare this to other metazoan biomineralizing proteomes. We bring some spatial resolution to this analysis by dividing Vaceletia's aragonitic calcium carbonate skeleton into "head" and "stalk" regions. With our approach we were able to identify 40 proteins from both the head and stalk regions, with many of these sharing some similarity to previously identified gene products from other organisms. Among these proteins are known biomineralization compounds, such as carbonic anhydrase, spherulin, extracellular matrix proteins and very acidic proteins. This report provides the first proteome scale analysis of a calcified poriferan skeletal proteome, and its composition clearly demonstrates that the LCAM contributed several key enzymes and matrix proteins to its descendants that supported the metazoan ability to biocalcify. However, lineage specific evolution is also likely to have contributed significantly to the ability of disparate metazoan lineages to biocalcify.
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Affiliation(s)
- Juliane Germer
- Department of Geobiology, Georg-August University of Göttingen, Göttingen, Germany
| | - Karlheinz Mann
- Max Planck Institute of Biochemistry, Department of Proteomics and Signal Transduction, Munich, Germany
| | - Gert Wörheide
- Department of Earth- and Environmental Sciences & GeoBio-Center, Ludwig-Maximilians-Universität München, München, Germany
- SNSB—Bavarian State Collections of Palaeontology & Geology, München, Germany
| | - Daniel John Jackson
- Department of Geobiology, Georg-August University of Göttingen, Göttingen, Germany
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37
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Suzuki N, Ogiso S, Yachiguchi K, Kawabe K, Makino F, Toriba A, Kiyomoto M, Sekiguchi T, Tabuchi Y, Kondo T, Kitamura KI, Hong CS, Srivastav AK, Oshima Y, Hattori A, Hayakawa K. Monohydroxylated polycyclic aromatic hydrocarbons influence spicule formation in the early development of sea urchins (Hemicentrotus pulcherrimus). Comp Biochem Physiol C Toxicol Pharmacol 2015; 171:55-60. [PMID: 25737366 DOI: 10.1016/j.cbpc.2015.02.004] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/11/2015] [Revised: 02/14/2015] [Accepted: 02/24/2015] [Indexed: 11/26/2022]
Abstract
We previously demonstrated that monohydroxylated polycyclic aromatic hydrocarbons (OHPAHs), which are metabolites of polycyclic aromatic hydrocarbons (PAHs), act on calcified tissue and suppress osteoblastic and osteoclastic activity in the scales of teleost fish. The compounds may possibly influence other calcified tissues. Thus, the present study noted the calcified spicules in sea urchins and examined the effect of both PAHs and OHPAHs on spicule formation during the embryogenesis of sea urchins. After fertilization, benz[a]anthracene (BaA) and 4-hydroxybenz[a]anthracene (4-OHBaA) were added to seawater at concentrations of 10(-8) and 10(-7) M and kept at 18 °C. The influence of the compound was given at the time of the pluteus larva. At this stage, the length of the spicule was significantly suppressed by 4-OHBaA (10(-8) and 10(-7) M). BaA (10(-7) M) decreased the length of the spicule significantly, while the length did not change with BaA (10(-8) M). The expression of mRNAs (spicule matrix protein and transcription factors) in the 4-OHBaA (10(-7) M)-treated embryos was more strongly inhibited than were those in the BaA (10(-7) M)-treated embryos. This is the first study to demonstrate that OHPAHs suppress spicule formation in sea urchins.
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Affiliation(s)
- Nobuo Suzuki
- Noto Marine Laboratory, Institute of Nature and Environmental Technology, Kanazawa University, Housu-gun, Ishikawa 927-0553, Japan.
| | - Shouzo Ogiso
- Noto Marine Laboratory, Institute of Nature and Environmental Technology, Kanazawa University, Housu-gun, Ishikawa 927-0553, Japan
| | - Koji Yachiguchi
- Noto Marine Laboratory, Institute of Nature and Environmental Technology, Kanazawa University, Housu-gun, Ishikawa 927-0553, Japan
| | - Kimi Kawabe
- Faculty of Pharmaceutical Sciences, Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa University, Kakuma, Ishikawa 920-1192, Japan
| | - Fumiya Makino
- Faculty of Pharmaceutical Sciences, Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa University, Kakuma, Ishikawa 920-1192, Japan
| | - Akira Toriba
- Faculty of Pharmaceutical Sciences, Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa University, Kakuma, Ishikawa 920-1192, Japan
| | - Masato Kiyomoto
- Marine and Coastal Research Center, Ochanomizu University, Tateyama, Chiba 294-0301, Japan
| | - Toshio Sekiguchi
- Noto Marine Laboratory, Institute of Nature and Environmental Technology, Kanazawa University, Housu-gun, Ishikawa 927-0553, Japan
| | - Yoshiaki Tabuchi
- Division of Molecular Genetics Research, Life Science Research Center, University of Toyama, Toyama 930-0194, Japan
| | - Takashi Kondo
- Department of Radiological Sciences, Graduate School of Medicine and Pharmaceutical Sciences, University of Toyama, Toyama 930-0194, Japan
| | - Kei-ichiro Kitamura
- Faculty of Health Sciences, Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa University, Kanazawa, Ishikawa 920-0942, Japan
| | - Chun-Sang Hong
- Research and Business Foundation, Hankuk University of Foreign Studies, 81, Oedae-ro, Mohyeon-myeon, Cheoin-gu, Yongin-si, Gyeonggi-do 449-791, Republic of Korea
| | - Ajai K Srivastav
- Department of Zoology, D.D.U. Gorakhpur University, Gorakhpur 273-009, India
| | - Yuji Oshima
- Faculty of Agriculture, Kyushu University, Hakozaki, Fukuoka 812-8581, Japan
| | - Atsuhiko Hattori
- Department of Biology, College of Liberal Arts and Sciences, Tokyo Medical Dental University, Ichikawa, Chiba 272-0827, Japan
| | - Kazuichi Hayakawa
- Faculty of Pharmaceutical Sciences, Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa University, Kakuma, Ishikawa 920-1192, Japan
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38
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Helfgott S, Rosenthall L, Esdaile J, Tannenbaum H. Generalized skeletal response to 99mtechnetium methylene diphosphonate in rheumatoid arthritis. J Rheumatol 1982; 9:939-41. [PMID: 6219221] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
The total body retention (TBR) and the 5- and 24-h lumbar spine to soft tissue (LS/ST) ratios of 99mtechnetium methylene diphosphonate was studied in 19 patients with rheumatoid arthritis (RA), 16 patients with metastatic tumors that did not involve the lumbar spine, 10 patients with chronic renal failure and 17 controls. The TBR was significantly higher in all groups compared to the controls. The 5-h LS/ST did not differ between any of the groups although the 24-h LS/ST ratios were significantly elevated in RA and those with chronic renal failure. The 24-h LS/ST in RA was correlated only with disease duration. The results are consistent with a generalized increase in bone turnover in RA and may explain the recognized lack of sensitivity of quantitative scintigraphic techniques in this disorder.
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39
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Steven MM, Sturrock RD, Fogelman I, Smith ML. Whole body retention of diphosphonate in rheumatoid arthritis. J Rheumatol 1982; 9:873-7. [PMID: 7161778] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
The skeletal metabolism of patients with rheumatoid arthritis (RA) osteoarthritis (OA) and ankylosing spondylitis (AS) has been assessed by 24-h whole body retention of 99mTc diphosphonate (WBR). Values for RA and AS patients were significantly elevated but those of OA patients were not when compared to age and sex matched controls (27.0 +/- 8.6 vs 20.5 +/- 1.8%; 24.8 +/- 5.4 vs 19.4 +/- 1.5% greater than and 21.4 +/- 4.1 vs 21.2 +/- 1.4%, respectively). The WBR of patients taking steroids was greatly elevated and RA inpatients had higher values than outpatients, but the increased WBR could not be correlated with disease activity. The increased WBR in RA may represent an indirect effect possibly related to immobility.
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40
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Galibin GP. [Distribution of uranium in the body after single and chronic exposure to uranous uranate]. Gig Sanit 1974:37-40. [PMID: 4435499] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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41
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Smoliar VI. [Some aspects of skeletal mineralization during prolonged uptake into the body of different amounts of fluorine]. Gig Sanit 1974:17-20. [PMID: 4435373] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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