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Zhang H, Vandesompele J, Braeckmans K, De Smedt SC, Remaut K. Nucleic acid degradation as barrier to gene delivery: a guide to understand and overcome nuclease activity. Chem Soc Rev 2024; 53:317-360. [PMID: 38073448 DOI: 10.1039/d3cs00194f] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2024]
Abstract
Gene therapy is on its way to revolutionize the treatment of both inherited and acquired diseases, by transferring nucleic acids to correct a disease-causing gene in the target cells of patients. In the fight against infectious diseases, mRNA-based therapeutics have proven to be a viable strategy in the recent Covid-19 pandemic. Although a growing number of gene therapies have been approved, the success rate is limited when compared to the large number of preclinical and clinical trials that have been/are being performed. In this review, we highlight some of the hurdles which gene therapies encounter after administration into the human body, with a focus on nucleic acid degradation by nucleases that are extremely abundant in mammalian organs, biological fluids as well as in subcellular compartments. We overview the available strategies to reduce the biodegradation of gene therapeutics after administration, including chemical modifications of the nucleic acids, encapsulation into vectors and co-administration with nuclease inhibitors and discuss which strategies are applied for clinically approved nucleic acid therapeutics. In the final part, we discuss the currently available methods and techniques to qualify and quantify the integrity of nucleic acids, with their own strengths and limitations.
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Affiliation(s)
- Heyang Zhang
- Laboratory for General Biochemistry and Physical Pharmacy, Department of Pharmaceutical Sciences, Ghent University, 9000 Ghent, Belgium.
- Leiden Academic Centre for Drug Research, Leiden University, 2333 CC Leiden, The Netherlands
| | - Jo Vandesompele
- Department of Biomolecular Medicine, Ghent University, 9000 Ghent, Belgium
- Cancer Research Institute Ghent (CRIG), Ghent, Belgium
| | - Kevin Braeckmans
- Laboratory for General Biochemistry and Physical Pharmacy, Department of Pharmaceutical Sciences, Ghent University, 9000 Ghent, Belgium.
- Centre for Nano- and Biophotonics, Ghent University, 9000 Ghent, Belgium
| | - Stefaan C De Smedt
- Laboratory for General Biochemistry and Physical Pharmacy, Department of Pharmaceutical Sciences, Ghent University, 9000 Ghent, Belgium.
- Cancer Research Institute Ghent (CRIG), Ghent, Belgium
- Centre for Nano- and Biophotonics, Ghent University, 9000 Ghent, Belgium
| | - Katrien Remaut
- Laboratory for General Biochemistry and Physical Pharmacy, Department of Pharmaceutical Sciences, Ghent University, 9000 Ghent, Belgium.
- Cancer Research Institute Ghent (CRIG), Ghent, Belgium
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2
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Ruseva N, Atanasova M, Sbirkova-Dimitrova H, Marković A, Šmelcerović Ž, Šmelcerović A, Cherneva E, Bakalova A. Chloro-substituted pyridine squaramates as new DNase I inhibitors: Synthesis, structural characterization, in vitro evaluation and molecular docking studies. Chem Biol Interact 2023; 386:110772. [PMID: 37898285 DOI: 10.1016/j.cbi.2023.110772] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2023] [Revised: 10/08/2023] [Accepted: 10/16/2023] [Indexed: 10/30/2023]
Abstract
Having continued our recent study on the synthesis and DNase I inhibition of several monosquaramides, two new chloro-substituted pyridine squaramates were synthesized and their structure was identified by X-ray. Their inhibitory properties towards deoxyribonuclease I (DNase I) and xanthine oxidase (XO) were evaluated in vitro. 3-(((6-Chloropyridin-3-yl)methyl)amino)-4-ethoxycyclobut-3-ene-1,2-dione (compound 3a) inhibited DNase I with an IC50 value of 43.82 ± 6.51 μM, thus standing out as one of the most potent small organic DNase I inhibitors tested to date. No cytotoxicity to human tumor cell lines (HL-60, MDA-MB-231 and MCF-7) was observed for the tested compounds. In order to investigate the drug-likeness of the squaramates, the ADME profile and pharmacokinetic properties were evaluated. Molecular docking was performed to reveal the binding mode of the studied compounds on DNase I.
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Affiliation(s)
- Nina Ruseva
- Department of Chemistry, Faculty of Pharmacy, Medical University of Sofia, 2 Dunav Str., 1000, Sofia, Bulgaria
| | - Mariyana Atanasova
- Department of Chemistry, Faculty of Pharmacy, Medical University of Sofia, 2 Dunav Str., 1000, Sofia, Bulgaria
| | - Hristina Sbirkova-Dimitrova
- Institute of Mineralogy and Crystallography "Akad. Ivan Kostov", Bulgarian Academy of Sciences, Acad. G. Bonchev Bl. 107, 1113, Sofia, Bulgaria
| | - Ana Marković
- Department of Pharmacy, Faculty of Medicine, University of Niš, Bulevar Zorana Ðindića 81, 18000, Niš, Serbia
| | - Žaklina Šmelcerović
- Center for Biomedicinal Science, Faculty of Medicine, University of Niš, Bulevar Zorana Ðindića 81, 18000, Niš, Serbia
| | - Andrija Šmelcerović
- Department of Chemistry, Faculty of Medicine, University of Niš, Bulevar Zorana Ðindića 81, 18000, Niš, Serbia.
| | - Emiliya Cherneva
- Department of Chemistry, Faculty of Pharmacy, Medical University of Sofia, 2 Dunav Str., 1000, Sofia, Bulgaria; Institute of Organic Chemistry with Centre of Phytochemistry, Bulgarian Academy of Sciences, Acad. G. Bonchev Str., Build. 9, 1113, Sofia, Bulgaria
| | - Adriana Bakalova
- Department of Chemistry, Faculty of Pharmacy, Medical University of Sofia, 2 Dunav Str., 1000, Sofia, Bulgaria.
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3
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Peng XP, Al-Ddafari MS, Caballero-Oteyza A, El Mezouar C, Mrovecova P, Dib SE, Massen Z, Smahi MCE, Faiza A, Hassaïne RT, Lefranc G, Aribi M, Grimbacher B. Next generation sequencing (NGS)-based approach to diagnosing Algerian patients with suspected inborn errors of immunity (IEIs). Clin Immunol 2023; 256:109758. [PMID: 37678716 DOI: 10.1016/j.clim.2023.109758] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2023] [Revised: 07/23/2023] [Accepted: 09/02/2023] [Indexed: 09/09/2023]
Abstract
The advent of next-generation sequencing (NGS) technologies has greatly expanded our understanding of both the clinical spectra and genetic landscape of inborn errors of immunity (IEIs). Endogamous populations may be enriched for unique, ancestry-specific disease-causing variants, a consideration that significantly impacts molecular testing and analysis strategies. Herein, we report on the application of a 2-step NGS-based testing approach beginning with targeted gene panels (TGPs) tailored to specific IEI subtypes and reflexing to whole exome sequencing (WES) if negative for Northwest Algerian patients with suspected IEIs. Our overall diagnostic yield of 57% is comparable to others broadly applying short-read NGS to IEI detection, but data from our localized cohort show some similarities and differences from NGS studies performed on larger regional IEI cohorts. This suggests the importance of tailoring diagnostic strategies to local demographics and needs, but also highlights ongoing concerns inherent to the application of genomics for clinical IEI diagnostics.
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Affiliation(s)
- Xiao P Peng
- Institute for Immunodeficiency, Center for Chronic Immunodeficiency, Medical Center, Faculty of Medicine, Albert-Ludwigs-University of Freiburg, Germany; Department of Genetic Medicine, Johns Hopkins University School of Medicine, Baltimore, MD, United States of America.
| | - Moudjahed Saleh Al-Ddafari
- Laboratory of Applied Molecular Biology and Immunology, W0414100, University of Tlemcen, Algeria; Institute for Immunodeficiency, Center for Chronic Immunodeficiency, Medical Center, Faculty of Medicine, Albert-Ludwigs-University of Freiburg, Germany
| | - Andres Caballero-Oteyza
- Institute for Immunodeficiency, Center for Chronic Immunodeficiency, Medical Center, Faculty of Medicine, Albert-Ludwigs-University of Freiburg, Germany; RESIST - Cluster of Excellence 2155 to Hanover Medical School, Satellite Center Freiburg, Germany
| | - Chahrazed El Mezouar
- Laboratory of Applied Molecular Biology and Immunology, W0414100, University of Tlemcen, Algeria; Pediatric Department, Medical Center University of Tlemcen, Faculty of Medicine, University of Tlemcen, Algeria
| | - Pavla Mrovecova
- Institute for Immunodeficiency, Center for Chronic Immunodeficiency, Medical Center, Faculty of Medicine, Albert-Ludwigs-University of Freiburg, Germany
| | - Saad Eddin Dib
- Pediatric Department, Medical Center University of Tlemcen, Faculty of Medicine, University of Tlemcen, Algeria
| | - Zoheir Massen
- Pediatric Department, Medical Center University of Tlemcen, Faculty of Medicine, University of Tlemcen, Algeria
| | - Mohammed Chems-Eddine Smahi
- Laboratory of Applied Molecular Biology and Immunology, W0414100, University of Tlemcen, Algeria; Specialized Mother-Child Hospital of Tlemcen, Department of Neonatology, Faculty of Medicine, University of Tlemcen, Algeria
| | - Alddafari Faiza
- Department of Internal Medicine, Medical Center University of Tlemcen, Faculty of Medicine, University of Tlemcen, Tlemcen, Algeria
| | | | - Gérard Lefranc
- Institute of Human Genetics, UMR 9002 CNRS-University of Montpellier, France
| | - Mourad Aribi
- Laboratory of Applied Molecular Biology and Immunology, W0414100, University of Tlemcen, Algeria.
| | - Bodo Grimbacher
- Institute for Immunodeficiency, Center for Chronic Immunodeficiency, Medical Center, Faculty of Medicine, Albert-Ludwigs-University of Freiburg, Germany; DZIF - German Center for Infection Research, Satellite Center Freiburg, Germany; CIBSS - Centre for Integrative Biological Signalling Studies, Albert-Ludwigs University, Freiburg, Germany; RESIST - Cluster of Excellence 2155 to Hanover Medical School, Satellite Center Freiburg, Germany.
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4
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Van den Ackerveken P, Lobbens A, Pamart D, Kotronoulas A, Rommelaere G, Eccleston M, Herzog M. Epigenetic profiles of elevated cell free circulating H3.1 nucleosomes as potential biomarkers for non-Hodgkin lymphoma. Sci Rep 2023; 13:16335. [PMID: 37770512 PMCID: PMC10539380 DOI: 10.1038/s41598-023-43520-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2023] [Accepted: 09/25/2023] [Indexed: 09/30/2023] Open
Abstract
During cell death, nucleosomes, the basic structural unit of chromatin, are released into the blood stream and elevated levels have been found in the plasma of patients with solid cancers. In this study, we demonstrate an increase in cell free circulating H3.1-nucleosomes levels in plasma samples from patients with hematological malignancy, non-Hodgkin lymphoma (NHL), relative to healthy donors. As histone post-translational modifications (PTMs) of circulating nucleosomes are described as potential biomarkers of various solid cancers, we investigated the epigenetic profile of nucleosomes from NHL patients following nucleosome enrichment (Nu.Q® capture) combined with mass spectrometry. Eight histones PTMs, including the acetylation of histone H3 at lysine 9, 14 and 18 as well as the methylation state of histone H3 at lysine 9, 27 and 36, were identified at a higher level in the plasma of NHL patients compared to healthy donors. These results were confirmed in a larger clinical cohort by immunoassay. Subsequently, the temporal profile of these histone PTMs in NHL patients undergoing treatment course highlighted the potential use of these new biomarkers to monitor treatment response and/or disease progression. Our results substantiate that levels of H3.1-nucleosomes are particularly elevated in NHL patients and may be a useful diagnostic tool. Moreover, our work emphasizes the crucial roles of the epigenetic marks present on circulating nucleosomes to detect and monitor tumor progression and/or treatment response of non-Hodgkin Lymphoma.
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Affiliation(s)
| | - Alison Lobbens
- Belgian Volition SRL, 22 Rue Phocas Lejeune, Parc Scientifique Crealys, 5032, Isnes, Belgium
| | - Dorian Pamart
- Belgian Volition SRL, 22 Rue Phocas Lejeune, Parc Scientifique Crealys, 5032, Isnes, Belgium
| | - Aristotelis Kotronoulas
- Belgian Volition SRL, 22 Rue Phocas Lejeune, Parc Scientifique Crealys, 5032, Isnes, Belgium
| | - Guillaume Rommelaere
- Belgian Volition SRL, 22 Rue Phocas Lejeune, Parc Scientifique Crealys, 5032, Isnes, Belgium
| | - Mark Eccleston
- Belgian Volition SRL, 22 Rue Phocas Lejeune, Parc Scientifique Crealys, 5032, Isnes, Belgium
| | - Marielle Herzog
- Belgian Volition SRL, 22 Rue Phocas Lejeune, Parc Scientifique Crealys, 5032, Isnes, Belgium.
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5
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Marković A, Živković A, Atanasova M, Doytchinova I, Hofmann B, George S, Kretschmer S, Rödl C, Steinhilber D, Stark H, Šmelcerović A. Thiazole derivatives as dual inhibitors of deoxyribonuclease I and 5-lipoxygenase: A promising scaffold for the development of neuroprotective drugs. Chem Biol Interact 2023; 381:110542. [PMID: 37224992 DOI: 10.1016/j.cbi.2023.110542] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2023] [Revised: 05/02/2023] [Accepted: 05/15/2023] [Indexed: 05/26/2023]
Abstract
A library of 43 thiazole derivatives, including 31 previously and 12 newly synthesized in the present study, was evaluated in vitro for their inhibitory properties against bovine pancreatic DNase I. Nine compounds (including three newly synthesized) inhibited the enzyme showing improved inhibitory properties compared to that of the reference crystal violet (IC50 = 346.39 μM). Two compounds (5 and 29) stood out as the most potent DNase I inhibitors, with IC50 values below 100 μM. The 5-LO inhibitory properties of the investigated derivatives were also analyzed due to the importance of this enzyme in the development of neurodegenerative diseases. Compounds (12 and 29) proved to be the most prominent new 5-LO inhibitors, with IC50 values of 60 nM and 56 nM, respectively, in cell-free assay. Four compounds, including one previously (41) and three newly (12, 29 and 30) synthesized, have the ability to inhibit DNase I with IC50 values below 200 μM and 5-LO with IC50 values below 150 nM in cell-free assay. Molecular docking and molecular dynamics simulations were used to clarify DNase I and 5-LO inhibitory properties of the most potent representatives at the molecular level. The newly synthesized compound 29 (4-((4-(3-bromo-4-morpholinophenyl)thiazol-2-yl)amino)phenol) represents the most promising dual DNase I and 5-LO inhibitor, as it inhibited 5-LO in the nanomolar and DNase I in the double-digit micromolar concentration ranges. The results obtained in the present study, together with our recently published results for 4-(4-chlorophenyl)thiazol-2-amines, represent a good basis for the development of new neuroprotective therapeutics based on dual inhibition of DNase I and 5-LO.
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Affiliation(s)
- Ana Marković
- Department of Pharmacy, Faculty of Medicine, University of Niš, Dr Zoran Đinđić Boulevard 81, Niš, Serbia
| | - Aleksandra Živković
- Institute of Pharmaceutical and Medicinal Chemistry, Heinrich Heine University Düsseldorf, Düsseldorf, Germany
| | - Mariyana Atanasova
- Department of Chemistry, Faculty of Pharmacy, Medical University-Sofia, Sofia, Bulgaria
| | - Irini Doytchinova
- Department of Chemistry, Faculty of Pharmacy, Medical University-Sofia, Sofia, Bulgaria
| | - Bettina Hofmann
- Institute of Pharmaceutical Chemistry, Goethe University, Frankfurt, Frankfurt/Main, Germany
| | - Sven George
- Institute of Pharmaceutical Chemistry, Goethe University, Frankfurt, Frankfurt/Main, Germany
| | - Simon Kretschmer
- Institute of Pharmaceutical Chemistry, Goethe University, Frankfurt, Frankfurt/Main, Germany
| | - Carmen Rödl
- Institute of Pharmaceutical Chemistry, Goethe University, Frankfurt, Frankfurt/Main, Germany
| | - Dieter Steinhilber
- Institute of Pharmaceutical Chemistry, Goethe University, Frankfurt, Frankfurt/Main, Germany
| | - Holger Stark
- Institute of Pharmaceutical and Medicinal Chemistry, Heinrich Heine University Düsseldorf, Düsseldorf, Germany.
| | - Andrija Šmelcerović
- Department of Chemistry, Faculty of Medicine, University of Niš, Dr Zoran Đinđić Boulevard 81, Niš, Serbia.
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6
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Sarkar MK, Uppala R, Zeng C, Billi AC, Tsoi LC, Kidder A, Xing X, Perez White BE, Shao S, Plazyo O, Sirobhushanam S, Xing E, Jiang Y, Gallagher KA, Voorhees JJ, Kahlenberg JM, Gudjonsson JE. Keratinocytes sense and eliminate CRISPR DNA through STING/IFN-κ activation and APOBEC3G induction. J Clin Invest 2023; 133:e159393. [PMID: 36928117 PMCID: PMC10145927 DOI: 10.1172/jci159393] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2022] [Accepted: 03/14/2023] [Indexed: 03/18/2023] Open
Abstract
CRISPR/Cas9 has been proposed as a treatment for genetically inherited skin disorders. Here we report that CRISPR transfection activates STING-dependent antiviral responses in keratinocytes, resulting in heightened endogenous interferon (IFN) responses through induction of IFN-κ, leading to decreased plasmid stability secondary to induction of the cytidine deaminase gene APOBEC3G. Notably, CRISPR-generated KO keratinocytes had permanent suppression of IFN-κ and IFN-stimulated gene (ISG) expression, secondary to hypermethylation of the IFNK promoter region by the DNA methyltransferase DNMT3B. JAK inhibition via baricitinib prior to CRISPR transfection increased transfection efficiency, prevented IFNK promoter hypermethylation, and restored normal IFN-κ activity and ISG responses. This work shows that CRISPR-mediated gene correction alters antiviral responses in keratinocytes, has implications for future gene therapies for inherited skin diseases using CRISPR technology, and suggests pharmacologic JAK inhibition as a tool for facilitating and attenuating inadvertent selection effects in CRISPR/Cas9 therapeutic approaches.
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Affiliation(s)
| | - Ranjitha Uppala
- Department of Dermatology, and
- Graduate Program in Immunology, University of Michigan, Ann Arbor, Michigan, USA
| | | | | | | | | | | | | | - Shuai Shao
- Department of Dermatology, and
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, Xi’an, Shannxi, China
| | | | - Sirisha Sirobhushanam
- Department of Internal Medicine, Division of Rheumatology, University of Michigan, Ann Arbor, Michigan, USA
| | | | - Yanyun Jiang
- Department of Dermatology, and
- Department of Dermatology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Katherine A. Gallagher
- Section of Vascular Surgery, Department of Surgery
- Department of Microbiology and Immunology, and
| | | | - J. Michelle Kahlenberg
- Department of Dermatology, and
- Department of Internal Medicine, Division of Rheumatology, University of Michigan, Ann Arbor, Michigan, USA
- Taubman Medical Research Institute, University of Michigan, Ann Arbor, Michigan, USA
| | - Johann E. Gudjonsson
- Department of Dermatology, and
- Taubman Medical Research Institute, University of Michigan, Ann Arbor, Michigan, USA
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7
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Ruseva N, Sbirkova-Dimitrova H, Atanasova M, Marković A, Šmelcerović Ž, Šmelcerović A, Bakalova A, Cherneva E. Synthesis and DNase I Inhibitory Properties of New Squaramides. Molecules 2023; 28:molecules28020538. [PMID: 36677597 PMCID: PMC9863136 DOI: 10.3390/molecules28020538] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2022] [Revised: 12/19/2022] [Accepted: 12/25/2022] [Indexed: 01/09/2023] Open
Abstract
Three new monosquaramides (3a-c) were synthesized, characterized by IR, NMR and X-ray, and evaluated for inhibitory activity against deoxyribonuclease I (DNase I) and xanthine oxidase (XO) in vitro. The target compounds inhibited DNase I with IC50 values below 100 μM, being at the same time more potent DNase I inhibitors than crystal violet, used as a positive control. 3-Ethoxy-4-((1-(pyridin-3-yl)propan-2-yl)amino)cyclobut-3-ene-1,2-dione (3c) stood out as the most potent compound, exhibiting a slightly better IC50 value (48.04 ± 7.98 μM) compared to the other two compounds. In order to analyze potential binding sites for the studied compounds with DNase I, a molecular docking study was performed. Compounds 3a-c are among the most potent small organic DNase I inhibitors tested to date.
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Affiliation(s)
- Nina Ruseva
- Department of Chemistry, Faculty of Pharmacy, Medical University of Sofia, 2 Dunav Str., 1000 Sofia, Bulgaria
| | - Hristina Sbirkova-Dimitrova
- Institute of Mineralogy and Crystallography “Akad. Ivan Kostov”, Bulgarian Academy of Sciences, Acad. G. Bonchev Bl. 107, 1113 Sofia, Bulgaria
| | - Mariyana Atanasova
- Department of Chemistry, Faculty of Pharmacy, Medical University of Sofia, 2 Dunav Str., 1000 Sofia, Bulgaria
| | - Ana Marković
- Department of Pharmacy, Faculty of Medicine, University of Niš, Bulevar Zorana Đinđića 81, 18000 Niš, Serbia
| | - Žaklina Šmelcerović
- Center for Biomedicinal Science, Faculty of Medicine, University of Niš, Bulevar Zorana Đinđića 81, 18000 Niš, Serbia
| | - Andrija Šmelcerović
- Department of Chemistry, Faculty of Medicine, University of Niš, Bulevar Zorana Đinđića 81, 18000 Niš, Serbia
- Correspondence: (A.Š.); (E.C.)
| | - Adriana Bakalova
- Department of Chemistry, Faculty of Pharmacy, Medical University of Sofia, 2 Dunav Str., 1000 Sofia, Bulgaria
| | - Emiliya Cherneva
- Department of Chemistry, Faculty of Pharmacy, Medical University of Sofia, 2 Dunav Str., 1000 Sofia, Bulgaria
- Institute of Organic Chemistry with Centre of Phytochemistry, Bulgarian Academy of Sciences, Acad. G. Bonchev Str., Build. 9, 1113 Sofia, Bulgaria
- Correspondence: (A.Š.); (E.C.)
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8
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Moffat D, Ye K, Jin S. Decellularization for the retention of tissue niches. J Tissue Eng 2022; 13:20417314221101151. [PMID: 35620656 PMCID: PMC9128068 DOI: 10.1177/20417314221101151] [Citation(s) in RCA: 41] [Impact Index Per Article: 20.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2021] [Accepted: 05/01/2022] [Indexed: 12/25/2022] Open
Abstract
Decellularization of natural tissues to produce extracellular matrix is a promising method for three-dimensional scaffolding and for understanding microenvironment of the tissue of interest. Due to the lack of a universal standard protocol for tissue decellularization, recent investigations seek to develop novel methods for whole or partial organ decellularization capable of supporting cell differentiation and implantation towards appropriate tissue regeneration. This review provides a comprehensive and updated perspective on the most recent advances in decellularization strategies for a variety of organs and tissues, highlighting techniques of chemical, physical, biological, enzymatic, or combinative-based methods to remove cellular contents from tissues. In addition, the review presents modernized approaches for improving standard decellularization protocols for numerous organ types.
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Affiliation(s)
- Deana Moffat
- Department of Biomedical Engineering, Binghamton University, State University of New York (SUNY), Binghamton, NY, USA
| | - Kaiming Ye
- Department of Biomedical Engineering, Binghamton University, State University of New York (SUNY), Binghamton, NY, USA
- Center of Biomanufacturing for Regenerative Medicine, Binghamton University, State University of New York (SUNY), Binghamton, NY, USA
| | - Sha Jin
- Department of Biomedical Engineering, Binghamton University, State University of New York (SUNY), Binghamton, NY, USA
- Center of Biomanufacturing for Regenerative Medicine, Binghamton University, State University of New York (SUNY), Binghamton, NY, USA
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9
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Gajic M, Knez D, Sosič I, Mravljak J, Meden A, Košak U, Leitzbach L, George S, Hofmann B, Zivkovic A, Steinhilber D, Stark H, Gobec S, Smelcerovic A, Anderluh M. Repurposing of 8-Hydroxyquinoline-based Butyrylcholinesterase and Cathepsin B Ligands as Potent Non-peptidic Deoxyribonuclease I Inhibitors. ChemMedChem 2022; 17:e202100694. [PMID: 34994078 DOI: 10.1002/cmdc.202100694] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2021] [Revised: 12/20/2021] [Indexed: 11/06/2022]
Abstract
A library of 31 butyrylcholinesterase (BChE) and cathepsin B (CatB) inhibitors, was screened in vitro for inhibition of deoxyribonuclease I (DNase I). Compounds 22, 8 and 7 are among the most potent synthetic non-peptide DNase I inhibitors reported up to date. Three 8-hydroxyquinoline analogues inhibited both DNase I and BChE with IC50 values below 35 µM and 50 nM, respectively, while 2 nitroxoline derivatives inhibited DNase I and Cat B endopeptidase activity with IC50 values below 60 µM and 20 µM, respectively. Selected derivatives were screened for various co-target binding affinities at dopamine D2 and D3, histamine H3 and H4 receptors and inhibition of 5-lipoxygenase. Compound 8 bound to the H3 receptor and is highlighted as the most promising multifunctional ligand with a favorable pharmacokinetic profile and one of the most potent non-peptide DNase I inhibitors. The present study demonstrates that 8-hydroxyquinoline is a structural fragment critical for DNase I inhibition in the presented series of compounds.
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Affiliation(s)
| | - Damijan Knez
- University of Ljubljana, Department of Medicinal Chemistry, SLOVENIA
| | - Izidor Sosič
- University of Ljubljana, Department of Medicinal Chemistry, SLOVENIA
| | - Janez Mravljak
- University of Ljubljana, Department of Medicinal Chemistry, SLOVENIA
| | - Anže Meden
- University of Ljubljana, Department of Medicinal Chemistry, SLOVENIA
| | - Urban Košak
- University of Ljubljana, Department of Medicinal Chemistry, SLOVENIA
| | - Luisa Leitzbach
- Heinrich Heine University Duesseldorf, Institute for Pharmaceutical and Medicinal Chemistry, GERMANY
| | - Sven George
- Goethe-University of Frankfurt, Institute of Pharmaceutical Chemistry, GERMANY
| | - Bettina Hofmann
- Goethe-University of Frankfurt, Institute of Pharmaceutical Chemistry, GERMANY
| | - Aleksandra Zivkovic
- Heinrich Heine University Duesseldorf, Institute of Pharmaceutical and Medicinal Chemistry, GERMANY
| | - Dieter Steinhilber
- Goethe-University of Frankfurt, Institute of Pharmaceutical Chemistry, GERMANY
| | - Holger Stark
- Heinrich Heine University Duesseldorf, Institute of Pharmaceutical and Medicinal Chemistry, GERMANY
| | - Stanislav Gobec
- University of Ljubljana, Department of Medicinal Chemistry, SLOVENIA
| | | | - Marko Anderluh
- University of Ljubljana, Faculty of Pharmacy, Askerceva cesta 7, 1000, Ljubljana, SLOVENIA
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10
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Wu C, Wang J, Chen Y, Xing X. In situ label-free and sensitive detection assay for cell apoptosis via polyadenosine-coralyne fluorescence enhancement strategy. Anal Biochem 2021; 632:114329. [PMID: 34525387 DOI: 10.1016/j.ab.2021.114329] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2021] [Revised: 07/23/2021] [Accepted: 08/03/2021] [Indexed: 10/20/2022]
Abstract
Cell apoptosis detection is vital for biological analysis and clinical application; some detection assays are already commercially available. However, it is still far from perfect and needs further improvement for less cost, time-consuming and operation demanding. TUNEL, a high market share cell apoptosis assay, depends on adulteration fluorescent labelling dUTP by terminal deoxynucleotidyl transferase(TdT) which randomly adds deoxyribonucleoside triphosphates (dNTPs) at the 3'-OH terminal of ssDNA with a template-free manner. Based on our previous work, we adopted a label-free strategy to reduce the cost and operation maintenance of TUNEL and developed a facile, rapid, convenient and in-situ assay for cell apoptosis.
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Affiliation(s)
- Chun Wu
- Department of Biotechnology, College of Life Science and Technology, Jinan University Guangzhou, 510632, China
| | - Jingru Wang
- Department of Biotechnology, College of Life Science and Technology, Jinan University Guangzhou, 510632, China
| | - Yihang Chen
- Department of Biotechnology, College of Life Science and Technology, Jinan University Guangzhou, 510632, China
| | - Xiwen Xing
- Department of Biotechnology, College of Life Science and Technology, Jinan University Guangzhou, 510632, China.
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11
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Gajić M, Ilić BS, Bondžić BP, Džambaski Z, Kojić VV, Jakimov DS, Kocić G, Šmelcerović A. 1,2,3,4-Tetrahydroisoquinoline Derivatives as a Novel Deoxyribonuclease I Inhibitors. Chem Biodivers 2021; 18:e2100261. [PMID: 34170076 DOI: 10.1002/cbdv.202100261] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2021] [Accepted: 06/25/2021] [Indexed: 12/11/2022]
Abstract
Herein we report an assessment of 24 1,2,3,4-tetrahydroisoquinoline derivatives for potential DNase I (deoxyribonuclease I) inhibitory properties in vitro. Four of them inhibited DNase I with IC50 values below 200 μM. The most potent was 1-(6,7-dimethoxy-1,2,3,4-tetrahydroisoquinolin-1-yl)propan-2-one (2) (IC50 =134.35±11.38 μM) exhibiting slightly better IC50 value compared to three other active compounds, 2-[2-(4-fluorophenyl)-1,2,3,4-tetrahydroisoquinolin-1-yl]-1-phenylethan-1-one (15) (IC50 =147.51±14.87 μM), 2-[2-(4-fluorophenyl)-1,2,3,4-tetrahydroisoquinolin-1-yl]cyclohexan-1-one (18) (IC50 =149.07±2.98 μM) and 2-[6,7-dimethoxy-2-(p-tolyl)-1,2,3,4-tetrahydroisoquinolin-1-yl]cyclohexan-1-one (22) (IC50 =148.31±2.96 μM). Cytotoxicity assessment of the active DNase I inhibitors revealed a lack of toxic effects on the healthy cell lines MRC-5. Molecular docking and molecular dynamics simulations suggest that interactions with Glu 39, His 134, Asn 170, Tyr 211, Asp 251 and His 252 are an important factor for inhibitors affinity toward the DNase I. Observed interactions would be beneficial for the discovery of new active 1,2,3,4-tetrahydroisoquinoline-based inhibitors of DNase I, but might also encourage researchers to further explore and utilize potential therapeutic application of DNase I inhibitors, based on a versatile role of DNase I during apoptotic cell death.
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Affiliation(s)
- Mihajlo Gajić
- University of Niš, Faculty of Medicine, Department of Pharmacy, Blvd. Dr. Zorana Đinđića 81, 18000, Niš, Serbia
| | - Budimir S Ilić
- University of Niš, Faculty of Medicine, Department of Chemistry, Blvd. Dr. Zorana Đinđića 81, 18000, Niš, Serbia
| | - Bojan P Bondžić
- University of Belgrade, Institute of Chemistry, Technology and Metallurgy, National Institute of the Republic of Serbia, Njegoševa 12, 11000, Belgrade, Serbia
| | - Zdravko Džambaski
- University of Belgrade, Institute of Chemistry, Technology and Metallurgy, National Institute of the Republic of Serbia, Njegoševa 12, 11000, Belgrade, Serbia
| | - Vesna V Kojić
- University of Novi Sad, Faculty of Medicine, Oncology Institute of Vojvodina, Put Dr. Goldmana 4, 21204, Sremska Kamenica, Serbia
| | - Dimitar S Jakimov
- University of Novi Sad, Faculty of Medicine, Oncology Institute of Vojvodina, Put Dr. Goldmana 4, 21204, Sremska Kamenica, Serbia
| | - Gordana Kocić
- University of Niš, Faculty of Medicine, Department of Biochemistry, Blvd. Dr. Zorana Đinđića 81, 18000, Niš, Serbia
| | - Andrija Šmelcerović
- University of Niš, Faculty of Medicine, Department of Chemistry, Blvd. Dr. Zorana Đinđića 81, 18000, Niš, Serbia
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12
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Gajić M, Džambaski Z, Ilić BS, Kocić G, Bondžić BP, Šmelcerović A. Synthesis and analysis of 4-oxothiazolidines as potential dual inhibitors of deoxyribonuclease I and xanthine oxidase. Chem Biol Interact 2021; 345:109536. [PMID: 34058176 DOI: 10.1016/j.cbi.2021.109536] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2021] [Revised: 05/16/2021] [Accepted: 05/24/2021] [Indexed: 10/21/2022]
Abstract
In this study, seven new 4-oxothiazolidine derivatives were synthesized and assayed, along 7 known derivatives, for inhibitory properties against deoxyribonuclease I (DNase I) and xanthine oxidase (XO) in vitro. Among tested compounds, (5Z)-Ethyl-2-(2-(cyanomethylene)-4-oxothiazolidin-5-yliden)acetate (6) exhibited inhibitory activity against both enzymes (DNase I IC50 = 67.94 ± 5.99 μM; XO IC50 = 98.98 ± 13.47 μM), therefore being the first reported dual inhibitor of DNase I and XO. Observed DNase I inhibition qualifies compound 6 as the most potent small organic DNase I inhibitor reported so far. Derivatives of 2-alkyliden-4-oxothiazolidinone (1) inhibited DNase I below 200 μM, while the other tested 4-oxothiazolidine derivatives remained inactive against both enzymes. The molecular docking and molecular dynamics simulations into the binding sites of DNase I and XO enzyme allowed us to clarify the binding modes of this 4-oxothiazolidine derivative, which might aid future development of dual DNase I and XO.
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Affiliation(s)
- Mihajlo Gajić
- University of Niš, Faculty of Medicine, Department of Pharmacy, Blvd. Dr. Zorana Đinđića 81, 18000, Niš, Serbia
| | - Zdravko Džambaski
- University of Belgrade, Institute of Chemistry, Technology and Metallurgy, National Institute of the Republic of Serbia, Njegoševa 12, 11000, Belgrade, Serbia
| | - Budimir S Ilić
- University of Niš, Faculty of Medicine, Department of Chemistry, Blvd. Dr. Zorana Đinđića 81, 18000, Niš, Serbia
| | - Gordana Kocić
- University of Niš, Faculty of Medicine, Department of Biochemistry, Blvd. Dr. Zorana Đinđića 81, 18000, Niš, Serbia
| | - Bojan P Bondžić
- University of Belgrade, Institute of Chemistry, Technology and Metallurgy, National Institute of the Republic of Serbia, Njegoševa 12, 11000, Belgrade, Serbia.
| | - Andrija Šmelcerović
- University of Niš, Faculty of Medicine, Department of Chemistry, Blvd. Dr. Zorana Đinđića 81, 18000, Niš, Serbia.
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13
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A novel proteomics approach to epigenetic profiling of circulating nucleosomes. Sci Rep 2021; 11:7256. [PMID: 33790358 PMCID: PMC8012598 DOI: 10.1038/s41598-021-86630-3] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2021] [Accepted: 03/18/2021] [Indexed: 12/26/2022] Open
Abstract
Alteration of epigenetic modifications plays an important role in human cancer. Notably, the dysregulation of histone post-translational modifications (PTMs) has been associated with several cancers including colorectal cancer (CRC). However, the signature of histone PTMs on circulating nucleosomes is still not well described. We have developed a fast and robust enrichment method to isolate circulating nucleosomes from plasma for further downstream proteomic analysis. This method enabled us to quantify the global alterations of histone PTMs from 9 CRC patients and 9 healthy donors. Among 54 histone proteoforms identified and quantified in plasma samples, 13 histone PTMs were distinctive in CRC. Notably, methylation of histone H3K9 and H3K27, acetylation of histone H3 and citrullination of histone H2A1R3 were upregulated in plasma of CRC patients. A comparative analysis of paired samples identified 3 common histone PTMs in plasma and tumor tissue including the methylation and acetylation state of lysine 27 of histone H3. Moreover, we highlight for the first time that histone H2A1R3 citrulline is a modification upregulated in CRC patients. This new method presented herein allows the detection and quantification of histone variants and histone PTMs from circulating nucleosomes in plasma samples and could be used for biomarker discovery of cancer.
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14
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Felux J, Erbacher A, Breckler M, Hervé R, Lemeiter D, Mannherz HG, Napirei M, Rammensee HG, Decker P. Deoxyribonuclease 1-Mediated Clearance of Circulating Chromatin Prevents From Immune Cell Activation and Pro-inflammatory Cytokine Production, a Phenomenon Amplified by Low Trap1 Activity: Consequences for Systemic Lupus Erythematosus. Front Immunol 2021; 12:613597. [PMID: 33746957 PMCID: PMC7969502 DOI: 10.3389/fimmu.2021.613597] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2020] [Accepted: 02/05/2021] [Indexed: 12/11/2022] Open
Abstract
Increased concentrations of circulating chromatin, especially oligo-nucleosomes, are observed in sepsis, cancer and some inflammatory autoimmune diseases like systemic lupus erythematosus (SLE). In SLE, circulating nucleosomes mainly result from increased apoptosis and decreased clearance of apoptotic cells. Once released, nucleosomes behave both as an autoantigen and as a damage-associated molecular pattern (DAMP) by activating several immune cells, especially pro-inflammatory cells. Deoxyribonuclease 1 (DNase1) is a major serum nuclease whose activity is decreased in mouse and human lupus. Likewise, the mitochondrial chaperone tumor necrosis factor (TNF) receptor-associated protein-1 (Trap1) protects against oxidative stress, which is increased in SLE. Here, using wild type, DNase1-deficient and DNase1/Trap1-deficient mice, we demonstrate that DNase1 is a major serum nuclease involved in chromatin degradation, especially when the plasminogen system is activated. In vitro degradation assays show that chromatin digestion is strongly impaired in serum from DNase1/Trap1-deficient mice as compared to wild type mice. In vivo, after injection of purified chromatin, clearance of circulating chromatin is delayed in DNase1/Trap1-deficient mice in comparison to wild type mice. Since defective chromatin clearance may lead to chromatin deposition in tissues and subsequent immune cell activation, spleen cells were stimulated in vitro with chromatin. Splenocytes were activated by chromatin, as shown by interleukin (IL)-12 secretion and CD69 up-regulation. Moreover, cell activation was exacerbated when Trap1 is deficient. Importantly, we also show that cytokines involved in lupus pathogenesis down-regulate Trap1 expression in splenocytes. Therefore, combined low activities of both DNase1 and Trap1 lead to an impaired degradation of chromatin in vitro, delayed chromatin clearance in vivo and enhanced activation of immune cells. This situation may be encountered especially, but not exclusively, in SLE by the negative action of cytokines on Trap1 expression.
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Affiliation(s)
- Jasmin Felux
- Department of Immunology, Institute for Cell Biology, University of Tübingen, Tübingen, Germany
| | - Annika Erbacher
- Department of Immunology, Institute for Cell Biology, University of Tübingen, Tübingen, Germany
| | - Magali Breckler
- Li2P, University Sorbonne Paris Nord, Bobigny, France.,INSERM UMR 1125, Bobigny, France
| | - Roxane Hervé
- Li2P, University Sorbonne Paris Nord, Bobigny, France.,INSERM UMR 1125, Bobigny, France
| | - Delphine Lemeiter
- Li2P, University Sorbonne Paris Nord, Bobigny, France.,INSERM UMR 1125, Bobigny, France
| | - Hans Georg Mannherz
- Department of Anatomy and Molecular Embryology, Medical Faculty, Ruhr-University Bochum, Bochum, Germany
| | - Markus Napirei
- Department of Anatomy and Molecular Embryology, Medical Faculty, Ruhr-University Bochum, Bochum, Germany
| | - Hans-Georg Rammensee
- Department of Immunology, Institute for Cell Biology, University of Tübingen, Tübingen, Germany
| | - Patrice Decker
- Department of Immunology, Institute for Cell Biology, University of Tübingen, Tübingen, Germany.,Li2P, University Sorbonne Paris Nord, Bobigny, France.,INSERM UMR 1125, Bobigny, France
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15
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Ilić BS, Gajić M, Bondžić BP, Džambaski Z, Kocić G, Šmelcerović A. Deoxyribonuclease I Inhibitory Properties, Molecular Docking and Molecular Dynamics Simulations of 1‐(Pyrrolidin‐2‐yl)propan‐2‐one Derivatives. Chem Biodivers 2021; 18:e2000996. [DOI: 10.1002/cbdv.202000996] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2020] [Accepted: 02/02/2021] [Indexed: 12/20/2022]
Affiliation(s)
- Budimir S. Ilić
- University of Niš Faculty of Medicine, Department of Chemistry Blvd. Dr. Zorana Đinđića 81 18000 Niš Serbia
| | - Mihajlo Gajić
- University of Niš Faculty of Medicine, Department of Pharmacy Blvd. Dr. Zorana Đinđića 81 18000 Niš Serbia
| | - Bojan P. Bondžić
- University of Belgrade Institute of Chemistry, Technology and Metallurgy Njegoševa 12 11000 Belgrade Serbia
| | - Zdravko Džambaski
- University of Belgrade Institute of Chemistry, Technology and Metallurgy Njegoševa 12 11000 Belgrade Serbia
| | - Gordana Kocić
- University of Niš Faculty of Medicine, Department of Biochemistry Blvd. Dr. Zorana Đinđića 81 18000 Niš Serbia
| | - Andrija Šmelcerović
- University of Niš Faculty of Medicine, Department of Chemistry Blvd. Dr. Zorana Đinđića 81 18000 Niš Serbia
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16
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Piantadosi CA. Mitochondrial DNA, oxidants, and innate immunity. Free Radic Biol Med 2020; 152:455-461. [PMID: 31958498 DOI: 10.1016/j.freeradbiomed.2020.01.013] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/18/2019] [Revised: 01/09/2020] [Accepted: 01/13/2020] [Indexed: 12/14/2022]
Abstract
Mitochondrial oxidant damage, including damage to mitochondrial DNA (mtDNA) is a feature of both severe microbial infections and inflammation arising from sterile (non-infectious) sources such as tissue trauma. Damaged mitochondria release intact or oxidized fragments of mtDNA into the cytoplasm, which represent oxidant injury, and the fragments promote a spontaneous innate immune response, exemplifying a modern frontier of immunological research. MtDNA and mitochondrial-derived oxidants are central factors in activating at least three innate immune pathways involving the TLR9 (Toll-like receptor 9), the NLRP3 (NACHT, LRR and PYD domains-containing protein-3) inflammasome, and the cGAS (cyclic AMP-GMP synthase) pathway. The events that allow mtDNA to escape from damaged mitochondria and from damaged cells are incompletely known, but the presence of cytoplasmic mtDNA and cell-free mtDNA as immune regulators are important for understanding the cell's capacity for protecting mitochondrial quality control (MQC) and cell viability during inflammatory states.
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17
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Choi JW, Vasamsetti BMK, Choo J, Kim HY. Analysis of deoxyribonuclease activity by conjugation-free fluorescence polarisation in sub-nanolitre droplets. Analyst 2020; 145:3222-3228. [PMID: 32118224 DOI: 10.1039/c9an02380a] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
We report the analysis of deoxyribonuclease (DNase) activity by conjugation-free fluorescence polarisation in a droplet-based microfluidic chip. DNase is a DNA cleaving enzyme and its activity is important in the maintenance of normal cellular functions. Alterations in DNase activity have been implicated as the cause of various cancers and autoimmune diseases. To date, various methods for the analysis of DNase activity have been reported. However, they are not cost effective due to the requirement of large sample volumes and the need for the conjugation of fluorescent dyes. In this study, we have used ethidium bromide (EtBr), a DNA intercalating reagent, as a fluorescent reporter without any prior conjugation or modification of DNA. Degradation of DNA by DNase 1 was monitored at a steady state by making changes in the fluorescence polarisation of EtBr in droplets with a volume of 330 picolitre at a 40 hertz frequency under visible light. Using this technique, we successfully determined the half-maximal inhibitory concentration (IC50) of ethylenediaminetetraacetic acid (EDTA) for the inhibition of DNase 1 activity to be 1.56 ± 0.91 mM.
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Affiliation(s)
- Jae-Won Choi
- Department of Biochemistry, Chungbuk National University, Cheongju 28644, Republic of Korea.
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18
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Smelcerovic A, Zivkovic A, Ilic BS, Kolarevic A, Hofmann B, Steinhilber D, Stark H. 4-(4-Chlorophenyl)thiazol-2-amines as pioneers of potential neurodegenerative therapeutics with anti-inflammatory properties based on dual DNase I and 5-LO inhibition. Bioorg Chem 2020; 95:103528. [DOI: 10.1016/j.bioorg.2019.103528] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2019] [Revised: 12/16/2019] [Accepted: 12/19/2019] [Indexed: 11/25/2022]
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19
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Mandke P, Vasquez KM. Interactions of high mobility group box protein 1 (HMGB1) with nucleic acids: Implications in DNA repair and immune responses. DNA Repair (Amst) 2019; 83:102701. [PMID: 31563843 DOI: 10.1016/j.dnarep.2019.102701] [Citation(s) in RCA: 73] [Impact Index Per Article: 14.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2019] [Revised: 09/09/2019] [Accepted: 09/09/2019] [Indexed: 01/10/2023]
Abstract
High mobility group box protein 1 (HMGB1) is a highly versatile, abundant, and ubiquitously expressed, non-histone chromosomal protein, which belongs to the HMGB family of proteins. These proteins form an integral part of the architectural protein repertoire to support chromatin structure in the nucleus. In the nucleus, the role of HMGB1 is attributed to its ability to bind to undamaged DNA, damaged DNA, and alternative (i.e. non-B) DNA structures with high affinity and subsequently induce bending of the DNA substrates. Due to its binding to DNA, HMGB1 has been implicated in critical biological processes, such as DNA transcription, replication, repair, and recombination. In addition to its intracellular functions, HMGB1 can also be released in the extracellular space where it elicits immunological responses. HMGB1 associates with many different molecules, including DNA, RNA, proteins, and lipopolysaccharides to modulate a variety of processes in both DNA metabolism and in innate immunity. In this review, we will focus on the implications of the interactions of HMGB1 with nucleic acids in DNA repair and immune responses. We report on the roles of HMGB1 in nucleotide excision repair (NER), base excision repair (BER), mismatch repair (MMR) and DNA double-strand break repair (DSBR). We also report on its roles in immune responses via its potential effects on antigen receptor diversity generation [V(D)J recombination] and interactions with foreign and self-nucleic acids. HMGB1 expression is altered in a variety of cancers and immunological disorders. However, due to the diversity and complexity of the biological processes influenced by HMGB1 (and its family members), a detailed understanding of the intracellular and extracellular roles of HMGB1 in DNA damage repair and immune responses is warranted to ensure the development of effective HMGB1-related therapies.
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Affiliation(s)
- Pooja Mandke
- Division of Pharmacology and Toxicology, College of Pharmacy, The University of Texas at Austin, Dell Pediatric Research Institute, 1400 Barbara Jordan Boulevard, Austin, TX, 78723, USA
| | - Karen M Vasquez
- Division of Pharmacology and Toxicology, College of Pharmacy, The University of Texas at Austin, Dell Pediatric Research Institute, 1400 Barbara Jordan Boulevard, Austin, TX, 78723, USA.
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20
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Synthesis and DNase I inhibitory properties of new benzocyclobutane-2,5-diones. Future Med Chem 2019; 11:2415-2426. [DOI: 10.4155/fmc-2019-0032] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Aim: Eight new benzocyclobutane-2,5-diones (1a–1h) were synthesized, and their inhibitory properties against bovine pancreatic DNase I were examined in vitro. Methods & results: Compounds 1a–1h were synthesized using photocycloaddition of duroquinone with various phenyl-substituted ethylenes in the presence of 18W compact fluorescent lamp (visible light). Two compounds, 1,3,4,6-tetramethyl-7-phenylbicyclo[4.2.0]oct-3-ene-2,5-dione (1a) and 1,3,4,6-tetramethyl-7-p-tolylbicyclo[4.2.0]oct-3-ene-2,5-dione (1b) inhibited DNase I in a noncompetitive manner with IC50 values below 150 μM and showed to be more potent DNase I inhibitors than crystal violet, used as a positive control. In order to analyze potential binding sites for the studied compounds with DNase I, molecular docking study was performed. Conclusion: The studied benzocyclobutane-2,5-diones offer a good starting point for a design of new DNase I inhibitors.
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21
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Hypoxia-induced human deoxyribonuclease I is a cellular restriction factor of hepatitis B virus. Nat Microbiol 2019; 4:1196-1207. [PMID: 30936483 DOI: 10.1038/s41564-019-0405-x] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2017] [Accepted: 02/11/2019] [Indexed: 12/17/2022]
Abstract
Numerous human APOBEC3 cytidine deaminases have proven to be, inter alia, host cell restriction factors for retroviruses and hepadnaviruses. Although they can bind to genomic RNA and become encapsidated, they are only catalytically active on single-stranded DNA. As there are many cellular deoxyribonucleases (DNases), we hypothesized that a parallel could be struck between APOBEC3 and DNases. For human hepatitis B virus (HBV), we show that DNase I can considerably reduce the virion genome copy number from a variety of transfected or infected cells. DNASE1 is overexpressed and encapsidated in HBV particles in vitro in hypoxic environments and in vivo in cirrhotic patient livers as well as in the serum of infected patients. The use of CoCl2 and dimethyloxalylglycine, mimetic agents used to induce hypoxia by inhibiting prolyl hydroxylase enzymes that stabilize hypoxia-inducible factor (HIF)-1α, showed that the formation of HIF-1α/HIF-1β heterodimers results in the induction of DNASE1. Indeed, transfection with HIF-1α and HIF-1β expression constructs upregulated DNASE1. These findings suggest that human DNase I can impact HBV replication through the catabolism of the DNA genome within the capsid. The activity of DNases in general may explain in part the high frequency of empty or 'light' hepatitis B virions observed in vivo.
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22
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Synthesis and DNase I inhibitory properties of some 5,6,7,8-tetrahydrobenzo[4,5]thieno[2,3-d]pyrimidines. Bioorg Chem 2018; 80:693-705. [DOI: 10.1016/j.bioorg.2018.07.009] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2018] [Revised: 07/08/2018] [Accepted: 07/09/2018] [Indexed: 12/11/2022]
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23
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Kolarević A, Ilić BS, Kocić G, Džambaski Z, Šmelcerović A, Bondžić BP. Synthesis and DNase I inhibitory properties of some 4‐thiazolidinone derivatives. J Cell Biochem 2018; 120:264-274. [DOI: 10.1002/jcb.27339] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2018] [Accepted: 06/27/2018] [Indexed: 01/10/2023]
Affiliation(s)
- Ana Kolarević
- Department of Pharmacy Faculty of Medicine, University of Niš Niš Serbia
| | - Budimir S. Ilić
- Department of Chemistry Faculty of Medicine, University of Niš Niš Serbia
| | - Gordana Kocić
- Department of Biochemistry, Faculty of Medicine, University of Niš Niš Serbia
| | | | | | - Bojan P. Bondžić
- Center for Chemistry ICTM, University of Belgrade Belgrade Serbia
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24
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Kolarević A, Ilić BS, Anastassova N, Mavrova AT, Yancheva D, Kocić G, Šmelcerović A. Benzimidazoles as novel deoxyribonuclease I inhibitors. J Cell Biochem 2018; 119:8937-8948. [DOI: 10.1002/jcb.27147] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2017] [Accepted: 05/18/2018] [Indexed: 11/07/2022]
Affiliation(s)
- Ana Kolarević
- Department of Pharmacy Faculty of Medicine, University of Niš Niš Serbia
| | - Budimir S. Ilić
- Department of Chemistry Faculty of Medicine, University of Niš Niš Serbia
| | - Neda Anastassova
- 3Laboratory of Structural Organic Analysis, Institute of Organic Chemistry with Centre of Phytochemistry, Bulgarian Academy of Sciences Sofia Bulgaria
| | - Anelia Ts. Mavrova
- Department of Organic Synthesis, University of Chemical Technology and Metallurgy Sofia Bulgaria
| | - Denitsa Yancheva
- 3Laboratory of Structural Organic Analysis, Institute of Organic Chemistry with Centre of Phytochemistry, Bulgarian Academy of Sciences Sofia Bulgaria
| | - Gordana Kocić
- Department of Biochemistry, Faculty of Medicine, University of Niš Niš Serbia
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25
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Ilić BS, Kolarević A, Kocić G, Šmelcerović A. Ascorbic acid as DNase I inhibitor in prevention of male infertility. Biochem Biophys Res Commun 2018; 498:1073-1077. [DOI: 10.1016/j.bbrc.2018.03.120] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2018] [Accepted: 03/14/2018] [Indexed: 11/28/2022]
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26
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Zhu R, Luo X, Deng L, Lei C, Huang Y, Nie Z, Yao S. An enzymatic polymerization-activated silver nanocluster probe for in situ apoptosis assay. Analyst 2018; 143:2908-2914. [DOI: 10.1039/c8an00535d] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
A DNA/AgNC probe was developed for in situ apoptosis assay based on an enzyme-polymerized poly-dA DNA chain and strand displacement.
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Affiliation(s)
- Rong Zhu
- State Key Laboratory of Chemo/Biosensing and Chemometrics
- College of Chemistry and Chemical Engineering
- Hunan University
- Changsha
- P. R. China
| | - Xingyu Luo
- State Key Laboratory of Chemo/Biosensing and Chemometrics
- College of Chemistry and Chemical Engineering
- Hunan University
- Changsha
- P. R. China
| | - Lu Deng
- State Key Laboratory of Chemo/Biosensing and Chemometrics
- College of Chemistry and Chemical Engineering
- Hunan University
- Changsha
- P. R. China
| | - Chunyang Lei
- State Key Laboratory of Chemo/Biosensing and Chemometrics
- College of Chemistry and Chemical Engineering
- Hunan University
- Changsha
- P. R. China
| | - Yan Huang
- State Key Laboratory of Chemo/Biosensing and Chemometrics
- College of Chemistry and Chemical Engineering
- Hunan University
- Changsha
- P. R. China
| | - Zhou Nie
- State Key Laboratory of Chemo/Biosensing and Chemometrics
- College of Chemistry and Chemical Engineering
- Hunan University
- Changsha
- P. R. China
| | - Shouzhuo Yao
- State Key Laboratory of Chemo/Biosensing and Chemometrics
- College of Chemistry and Chemical Engineering
- Hunan University
- Changsha
- P. R. China
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Liu Z, Luo X, Li Z, Huang Y, Nie Z, Wang HH, Yao S. Enzyme-Activated G-Quadruplex Synthesis for in Situ Label-Free Detection and Bioimaging of Cell Apoptosis. Anal Chem 2017; 89:1892-1899. [DOI: 10.1021/acs.analchem.6b04360] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Zhuoliang Liu
- College
of Science, National University of Defence Technology, Changsha, 410073, People’s Republic of China
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28
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Zhao C, Chen Y, Fang J, Fan J, Tong C, Liu X, Liu B, Wang W. DNase-targeted natural product screening based on a sensitive and selective DNase I detecting system. RSC Adv 2017. [DOI: 10.1039/c7ra04911k] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
As a widely used deoxyribonuclease, DNase I is involved in many physiological processes including tumor cell proliferation, metastasis and apoptosis.
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Affiliation(s)
- Chuan Zhao
- College of Biology
- Hunan Province Key Laboratory of Plant Functional Genomics and Developmental Regulation
- Hunan University
- Changsha
- China
| | - Yanjiao Chen
- TCM and Ethnomedicine Innovation & Development Laboratory
- Sino-Luxemburg TCM Research Center
- School of Pharmacy
- Hunan University of Chinese Medicine
- Changsha
| | - Jun Fang
- College of Bioscience and Biotechnology
- Hunan Agriculture University
- Changsha
- China
| | - Jialong Fan
- College of Biology
- Hunan Province Key Laboratory of Plant Functional Genomics and Developmental Regulation
- Hunan University
- Changsha
- China
| | - Chunyi Tong
- College of Biology
- Hunan Province Key Laboratory of Plant Functional Genomics and Developmental Regulation
- Hunan University
- Changsha
- China
| | - Xuanming Liu
- College of Biology
- Hunan Province Key Laboratory of Plant Functional Genomics and Developmental Regulation
- Hunan University
- Changsha
- China
| | - Bin Liu
- College of Biology
- Hunan Province Key Laboratory of Plant Functional Genomics and Developmental Regulation
- Hunan University
- Changsha
- China
| | - Wei Wang
- TCM and Ethnomedicine Innovation & Development Laboratory
- Sino-Luxemburg TCM Research Center
- School of Pharmacy
- Hunan University of Chinese Medicine
- Changsha
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29
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Koyama R, Arai T, Kijima M, Sato S, Miura S, Yuasa M, Kitamura D, Mizuta R. DNase γ, DNase I and caspase-activated DNase cooperate to degrade dead cells. Genes Cells 2016; 21:1150-1163. [DOI: 10.1111/gtc.12433] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2016] [Accepted: 08/15/2016] [Indexed: 01/02/2023]
Affiliation(s)
- Ryo Koyama
- Research Institute for Biomedical Sciences; Tokyo University of Science; 2669 Yamazaki Noda Chiba 278-0022 Japan
| | - Tomoya Arai
- Research Institute for Biomedical Sciences; Tokyo University of Science; 2669 Yamazaki Noda Chiba 278-0022 Japan
| | - Marie Kijima
- Research Institute for Biomedical Sciences; Tokyo University of Science; 2669 Yamazaki Noda Chiba 278-0022 Japan
| | - Shoko Sato
- Department of Biological Science and Technology; Faculty of Industrial Science and Technology; Tokyo University of Science; 6-3-1 Niijuku Katsushika-ku Tokyo 125-8585 Japan
| | - Shigetoshi Miura
- Department of Biological Science and Technology; Faculty of Industrial Science and Technology; Tokyo University of Science; 6-3-1 Niijuku Katsushika-ku Tokyo 125-8585 Japan
| | - Makoto Yuasa
- Department of Pure and Applied Chemistry; Faculty of Science and Technology; Tokyo University of Science; 2641 Yamazaki Noda Chiba 278-8510 Japan
| | - Daisuke Kitamura
- Research Institute for Biomedical Sciences; Tokyo University of Science; 2669 Yamazaki Noda Chiba 278-0022 Japan
| | - Ryushin Mizuta
- Research Institute for Biomedical Sciences; Tokyo University of Science; 2669 Yamazaki Noda Chiba 278-0022 Japan
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30
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Alterations in the proliferative/apoptotic equilibrium in semen of adolescents with varicocele. J Assist Reprod Genet 2016; 33:1657-1664. [PMID: 27629121 DOI: 10.1007/s10815-016-0808-z] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2016] [Accepted: 08/30/2016] [Indexed: 10/21/2022] Open
Abstract
PURPOSE To verify if the presence of varicocele (grades II and III) with and without seminal alterations, using the 5th centile cutoff values in table A1.1 of the World Health Organization (WHO, 2010) manual, alters the seminal plasma levels of proteins DNASE1 (deoxyribonuclease-1) and IGFBP7 (Insulin-like growth factor-binding protein 7), which are related to apoptosis regulation and cell proliferation, respectively, demonstrating that these proteins are important for correct spermatogenesis. METHODS This cross sectional study was performed at the Sao Paulo Federal University Paulo between May 2014 and April 2016. A total of 61 male adolescents were included in this study, of which 20 controls without varicocele (C), 22 with varicocele and normal semen analysis (VNS) and 19 with varicocele and altered semen analysis (VAS). Seminal plasma from each patient was used for Western blotting analysis of individual protein levels. Values of each protein were normalized to a testicular housekeeping protein (PARK7-protein deglycase DJ-1). RESULTS Levels of IGFBP7 protein are increased in varicocele. Levels of DNASE1 are progressively decreased in varicocele (lower in varicocele and normal semen analysis, lowest in varicocele and altered semen analysis) when compared to adolescents without varicocele. DNASE1 levels are positively correlated with sperm concentration and morphology (correlation values of 0.400 and 0.404, respectively; p values of 0.001 and 0.001, respectively). CONCLUSION In conclusion, in adolescents, seminal plasma levels of IGFBP7, responsible for proliferative activity, are increased in varicocele grades II and III, and DNASE1, responsible for apoptosis regulation, are lower in varicocele, lowest in varicocele and low semen quality. These proteins demonstrate molecular alterations brought upon by varicocele. Moreover, DNASE1 is capable of discriminating a varicocele that causes alterations to semen quality from one that does not. We propose that the initial response of varicocele is to increase proliferative activity which, if followed by regulation of apoptosis, may lead to the ejaculation of a population of sperm that are in accordance with WHO cutoff values but, in the presence of dysregulated apoptosis, leads to lower sperm concentration and morphology.
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31
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Pedersen HL, Horvei KD, Thiyagarajan D, Seredkina N, Rekvig OP. Murine and Human Lupus Nephritis: Pathogenic Mechanisms and Theoretical Strategies for Therapy. Semin Nephrol 2016; 35:427-38. [PMID: 26573545 DOI: 10.1016/j.semnephrol.2015.08.004] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Lupus nephritis is one of the most serious manifestations of systemic lupus erythematosus, and represents one of the criteria implemented to classify systemic lupus erythematosus. Although studied for decades, no consensus has been reached related to the basic cellular, molecular, and immunologic mechanism(s) responsible for lupus nephritis. No causal treatments have been developed; therapy is approached mainly with nonspecific immunosuppressive medications. More detailed insight into disease mechanisms therefore is indispensable to develop new therapeutic strategies. In this review, contemporary knowledge on the pathogenic mechanisms of lupus nephritis is discussed based on recent data in murine and human lupus nephritis. Specific focus is given to the effect of anti-double-stranded DNA/antinucleosome antibodies in the kidneys and whether they bind exposed chromatin fragments in glomeruli or whether they bind inherent glomerular structures by cross-recognition. Overall, the data presented here favor the exposed chromatin model because we did not find any indication to substantiate the anti-double-stranded DNA antibody cross-reacting model. At the end of this review we present data on why chromatin fragments are expressed in the glomeruli of patients with lupus nephritis, and discuss how this knowledge can be used to direct the development of future therapies.
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Affiliation(s)
- Hege Lynum Pedersen
- RNA and Molecular Pathology Research Group, Department of Medical Biology, Faculty of Health Sciences, University of Tromsø, Tromsø, Norway.
| | - Kjersti Daae Horvei
- RNA and Molecular Pathology Research Group, Department of Medical Biology, Faculty of Health Sciences, University of Tromsø, Tromsø, Norway
| | - Dhivya Thiyagarajan
- RNA and Molecular Pathology Research Group, Department of Medical Biology, Faculty of Health Sciences, University of Tromsø, Tromsø, Norway
| | - Natalya Seredkina
- RNA and Molecular Pathology Research Group, Department of Medical Biology, Faculty of Health Sciences, University of Tromsø, Tromsø, Norway
| | - Ole Petter Rekvig
- RNA and Molecular Pathology Research Group, Department of Medical Biology, Faculty of Health Sciences, University of Tromsø, Tromsø, Norway; Department of Radiology, University Hospital of North Norway, Tromsø, Norway
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32
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Kim JM, Choe MH, Asaithambi K, Song JY, Lee YS, Lee JC, Seo JH, Kang HL, Lee KH, Lee WK, Cho MJ, Rhee KH, Youn HS, Baik SC. Helicobacter pylori HP0425 Targets the Nucleus with DNase I-Like Activity. Helicobacter 2016; 21:218-25. [PMID: 26395879 DOI: 10.1111/hel.12271] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/09/2022]
Abstract
BACKGROUND AND AIMS Nuclear targeting of bacterial proteins has a significant impact on host cell pathology. Helicobacter pylori have many nuclear targeting proteins that translocate into the nucleus of host cells. H. pylori HP0425, annotated as hypothetical, has a nuclear localization signal (NLS) sequence, but its function has not been demonstrated. The aim of this experiment was to address the nuclear translocation of HP0425 and determine the effect of HP0425 pathology on host cells. MATERIALS AND METHODS To investigate the nuclear localization of HP0425, it was expressed in AGS and MKN-1 cells as a GFP fusion protein (pEGFP-HP0425), and its localization was analyzed by confocal microscopy. Recombinant HP0425 (rHP0425) protein was overproduced as a GST fusion protein in Escherichia coli and purified by glutathione-affinity column chromatography. Purified rHP0425 was examined for cytotoxicity and DNase activity. RESULTS The pEGFP-HP0425 fluorescence was expressed in the nucleus and cytosol fraction of cells, while it was localized in the cytoplasm in the negative control. This protein exhibited DNase activity under various conditions, with the highest DNase activity in the presence of manganese. In addition, the rHP0425 protein efficiently decreased cell viability in a concentration-dependent manner. CONCLUSIONS These results suggest that HP0425 carrying a nuclear localization signal sequence translocates into the nucleus of host cells and degrades genomic DNA by DNase I-like enzymatic activity, which is a new pathogenic strategy of H. pylori in the host.
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Affiliation(s)
- Jung-Min Kim
- Department of Microbiology, Gyeongsang National University School of Medicine, Jinju, Korea
| | - Min-Ho Choe
- Department of Microbiology, Gyeongsang National University School of Medicine, Jinju, Korea
| | | | - Jae-Young Song
- Department of Microbiology, Gyeongsang National University School of Medicine, Jinju, Korea
| | - Yong Seok Lee
- Department of Life Science and Biotechnology, College of Natural Sciences, Soonchunhyang University, Asan, Korea
| | - Je Chul Lee
- Department of Microbiology, Kyungpook National University School of Medicine, Daegu, Korea
| | - Ji-Hyun Seo
- Department of Pediatrics, Gyeongsang Institute of Health Science, Gyeongsang National University School of Medicine, Jinju, Korea
| | - Hyung-Lyun Kang
- Department of Microbiology, Gyeongsang National University School of Medicine, Jinju, Korea.,Research Institute of Life Science, Gyeongsang National University, Jinju, Korea
| | - Kon Ho Lee
- Department of Microbiology, Gyeongsang National University School of Medicine, Jinju, Korea.,Research Institute of Life Science, Gyeongsang National University, Jinju, Korea
| | - Woo-Kon Lee
- Department of Microbiology, Gyeongsang National University School of Medicine, Jinju, Korea.,Research Institute of Life Science, Gyeongsang National University, Jinju, Korea
| | - Myung-Je Cho
- Department of Microbiology, Gyeongsang National University School of Medicine, Jinju, Korea.,Research Institute of Life Science, Gyeongsang National University, Jinju, Korea
| | - Kwang-Ho Rhee
- Department of Microbiology, Gyeongsang National University School of Medicine, Jinju, Korea.,Research Institute of Life Science, Gyeongsang National University, Jinju, Korea
| | - Hee-Shang Youn
- Department of Pediatrics, Gyeongsang Institute of Health Science, Gyeongsang National University School of Medicine, Jinju, Korea
| | - Seung-Chul Baik
- Department of Microbiology, Gyeongsang National University School of Medicine, Jinju, Korea.,Research Institute of Life Science, Gyeongsang National University, Jinju, Korea
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Zhu B, Zhang L, Zhang YY, Wang L, Li XG, Liu T, Fu YK, Zheng YF, Li P, Zhao ZG. DNase I aggravates islet β-cell apoptosis in type 2 diabetes. Mol Med Rep 2016; 13:4577-84. [PMID: 27082840 PMCID: PMC4878546 DOI: 10.3892/mmr.2016.5102] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2015] [Accepted: 03/07/2016] [Indexed: 12/24/2022] Open
Abstract
Deoxyribonuclease I (DNase I) is an endonuclease responsible for the destruction of chromatin during apoptosis. However, its role in diabetes remains unclear. The aim of the current study was to investigate the role of DNase I combined with high glucose levels in β-cell apoptosis. Human samples were collected and the DNase I activity was examined. High glucose-cultured INS-1 cells were transfected with DNase I small interfering RNA (siRNA) and the cell apoptosis was examined by western blotting and flow cytometry. Cell viability was analyzed by the Cell Counting Kit-8 assay. Cell apoptosis resulting from 50 mU/μl DNase I was also observed by flow cytometry, terminal deoxynucleotidyl transferase dUTP nick-end labeling stain and western blotting. Compared with healthy controls, the serum DNase I activity of patients with diabetes was significantly increased (P<0.05). In addition, DNase I expression was observed to be significantly increased in human pancreatic tissues. The addition of high glucose upregulated the cell apoptotic rate, whereas DNase I knockdown significantly reduced apoptosis in cells treated with high glucose. In addition, the western blotting results indicated that caspase-3 was increased subsequent to treatment of cells with 30 mM high glucose, however, this increase can be reversed by transfection with DNase I siRNA (P<0.05). Compared with cells cultured in normal conditions and high glucose, 50 mU/μl DNase I was able to significantly increase the cell apoptotic rate and level of caspase-3. DNase I activity was observed to be increased in type 2 diabetes, and high glucose combined with increased DNase I is suggested to aggravate β-cell apoptosis.
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Affiliation(s)
- Bin Zhu
- Department of Pharmacy, Beijing Tiantan Hospital, Capital Medical University, Beijing 100050, P.R. China
| | - Lei Zhang
- Department of Pharmacy, Beijing Shijitan Hospital, Capital Medical University, Beijing 100038, P.R. China
| | - Yue-Ying Zhang
- Department of Chinese Medicine, Beijing Hepingli Hospital, Beijing 100013, P.R. China
| | - Lei Wang
- Department of Chinese Medicine, The Third Affiliated Hospital of Beijing University of Chinese Medicine, Beijing 100050, P.R. China
| | - Xin-Gang Li
- Department of Pharmacy, Beijing Tiantan Hospital, Capital Medical University, Beijing 100050, P.R. China
| | - Teng Liu
- Department of Pharmacy, Beijing Tiantan Hospital, Capital Medical University, Beijing 100050, P.R. China
| | - Yu-Ke Fu
- Department of Pharmacy, Beijing Tiantan Hospital, Capital Medical University, Beijing 100050, P.R. China
| | - Yan-Fei Zheng
- Department of Chinese Medicine, The Third Affiliated Hospital of Beijing University of Chinese Medicine, Beijing 100050, P.R. China
| | - Ping Li
- Department of Nephrology, China‑Japan Friendship Hospital, Beijing 100029, P.R. China
| | - Zhi-Gang Zhao
- Department of Pharmacy, Beijing Tiantan Hospital, Capital Medical University, Beijing 100050, P.R. China
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34
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Xu W, Xie Z, Tong C, Peng L, Xiao C, Liu X, Zhu Y, Liu B. A rapid and sensitive method for kinetic study and activity assay of DNase I in vitro based on a GO-quenched hairpin probe. Anal Bioanal Chem 2016; 408:3801-9. [DOI: 10.1007/s00216-016-9474-3] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2015] [Revised: 03/03/2016] [Accepted: 03/07/2016] [Indexed: 01/29/2023]
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Vogel B, Shinagawa H, Hofmann U, Ertl G, Frantz S. Acute DNase1 treatment improves left ventricular remodeling after myocardial infarction by disruption of free chromatin. Basic Res Cardiol 2015; 110:15. [PMID: 25702039 DOI: 10.1007/s00395-015-0472-y] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/18/2014] [Revised: 02/03/2015] [Accepted: 02/17/2015] [Indexed: 12/21/2022]
Abstract
Myocardial infarction (MI) leads to necrosis and uncontrolled release of cellular content. Binucleated and polyploid cardiomyocytes contain high amounts of chromatin, a DNA polymer of histones which are cytotoxic. We hypothesized that chromatin from necrotic cells accumulates in the non-perfused, ischemic infarct region, causing local high concentrations of cytotoxic histones, thereby potentiating damage to the heart after MI. The endonuclease DNase1 is capable of dispersing extracellular chromatin through linker DNA digestion which could lead to a decrease in local histone concentrations and cytotoxicity. It was confirmed that after permanent coronary artery ligation in mice, extracellular histones accumulated within the infarcted myocardium. In vitro, histones caused myocyte cytotoxicity. For protection against histone-mediated cytotoxicity after MI in vivo, DNase1 was administered within the first 6 h after induction. Indeed, DNase1 accumulation in the infarcted region of the heart was observed, as well as effective disruption of extracellular cytotoxic chromatin and subsequent reduction of high local histone concentrations. Functionally, acute DNase1 treatment resulted in significantly improved left ventricular remodeling in mice as measured by serial echocardiography, while mortality, infarct size and inflammatory parameters were unaffected. Notably, improved cardiomyocyte survival within the infarct region was observed and might account for the protective effects in acutely DNase1-treated animals. Disruption of extracellular cytotoxic chromatin within the infarcted heart by acute DNase1 treatment is a promising approach to protect myocytes from histone-induced cell death and subsequent left ventricular dysfunction after MI.
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Affiliation(s)
- Benjamin Vogel
- Comprehensive Heart Failure Center (CHCF), Universitätsklinikum Würzburg, Zinklesweg 10, 97078, Würzburg, Germany,
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36
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Impaired degradation and aberrant phagocytosis of necrotic cell debris in the peripheral blood of patients with primary Sjögren's syndrome. J Autoimmun 2015; 56:12-22. [DOI: 10.1016/j.jaut.2014.08.004] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2014] [Revised: 08/06/2014] [Accepted: 08/27/2014] [Indexed: 02/02/2023]
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Vogel B, Frantz S. Determination of DNase activity by degradation of ethidium bromide-DNA complexes using a fluorescence plate reader. Anal Biochem 2014; 471:73-9. [PMID: 25433147 DOI: 10.1016/j.ab.2014.11.013] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2014] [Revised: 11/13/2014] [Accepted: 11/19/2014] [Indexed: 11/29/2022]
Abstract
The long known toxicity of free chromatin mediated by histones regained attention after discovery of neutrophil extracellular traps (NETs). Free histones from necrotic cells or NETs can damage prokaryotic and eukaryotic cells and are responsible for the aggravation of a growing list of diseases. DNases degrade the toxic chromatin polymer to nucleosomes and efficiently reduce local high histone concentrations. Therefore, DNase activity as a biomarker is of growing interest in basic and clinical research. Here a detailed one-step protocol is presented that allows rapid and sensitive detection of DNases down to 400 fg/μl per reaction based on the detection of fluorescent ethidium bromide/DNA complexes in a 96-well plate reader. The flexible protocol uses an internal standard for background correction and allows convenient and reliable data analysis using common laboratory equipment and chemicals without elaborate preparations. The DNase activity of a sample is clearly defined by substrate amount, incubation time, and (if appropriate) a DNase standard for absolute quantification in Kunitz units per milligram sample protein. Quantitative kinetic determination is possible within less than 1h down to 5 pg DNases/μl per reaction.
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Affiliation(s)
- Benjamin Vogel
- Comprehensive Heart Failure Center (CHCF), Universitätsklinikum Würzburg, 97078 Würzburg, Germany; Medizinische Klinik und Poliklinik I, Universitätsklinikum Würzburg, 97078 Würzburg, Germany.
| | - Stefan Frantz
- Universitätsklinik und Poliklinik für Innere Medizin III, Universitätsklinikum Halle (Saale), 06120 Halle (Saale), Germany
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Sarumathi A, Sethupathy S, Saravanan N. The protective efficacy of spirulina against bacterial endotoxin potentiated alcoholic liver disease. J Funct Foods 2014. [DOI: 10.1016/j.jff.2014.04.026] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022] Open
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40
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Aleksandrushkina NI, Vanyushin BF. Endonucleases and apoptosis in animals. BIOCHEMISTRY (MOSCOW) 2013; 77:1436-51. [PMID: 23379520 DOI: 10.1134/s0006297912130032] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Endonucleases are the main instruments of obligatory DNA degradation in apoptosis. Many endonucleases have marked processive action; initially they split DNA in chromatin into very large domains, and then they perform in it internucleosomal fragmentation of DNA followed by its hydrolysis to small fragments (oligonucleotides). During apoptosis, DNA of chromatin is attacked by many nucleases that are different in activity, specificity, and order of action. The activity of every endonuclease is regulated in the cell through its own regulatory mechanism (metal ions and other effectors, possibly also S-adenosylmethionine). Apoptosis is impossible without endonucleases as far as it leads to accumulation of unnecessary (defective) DNA, disorders in cell differentiation, embryogenesis, the organism's development, and is accompanied by various severe diseases. The interpretation of the structure and functions of endonucleases and of the nature and action of their modulating effectors is important not only for elucidation of mechanisms of apoptosis, but also for regulation and control of programmed cell death, cell differentiation, and development of organisms.
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Affiliation(s)
- N I Aleksandrushkina
- Belozersky Institute of Physico-Chemical Biology, Lomonosov Moscow State University, Moscow, 119991, Russia
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41
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Sokolovic D, Nikolic J, Kocic G, Jevtovic-Stoimenov T, Veljkovic A, Stojanovic M, Stanojkovic Z, Sokolovic DM, Jelic M. The effect of ursodeoxycholic acid on oxidative stress level and DNase activity in rat liver after bile duct ligation. Drug Chem Toxicol 2012; 36:141-8. [PMID: 22385135 DOI: 10.3109/01480545.2012.658919] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Accumulation of hydrophobic bile acids (BAs) during cholestasis plays an important role in apoptosis initiation as well as oxidative stress increase in liver cells. Ursodeoxycholic acid (UDCA) acts as a protector in BA-induced cell injury.The aim of the study was to evaluate the effect of UDCA on oxidative stress level and DNase I and II activity caused by liver injury in bile duct ligation (BDL) rats.Wistar rats were divided in four groups: group 1, control (sham-operated); group 2, sham-operated and injected with UDCA (30 mg/kg); group 3,animals with BDL; and group 4,UDCA-treatedcholestatic rats. Animals were sacrificed after 9 days. Malondialdehyde (MDA; lipid peroxidation end-product) level and protein-molecule oxidative modification (carbonyl group content) significantly increased in BDL rat liver. Catalase (CAT) activity in liver tissue was found to be decreased in BDL rats. In addition, xanthine oxidase (XO) activity, which is thought to be one of the key enzymes producing reactive oxygen species, was found to be increased in the cholestatic group. The apoptotic effect in cholestasis was probably triggered by the increased activation of DNase I and II. The protective effect of UDCA on liver tissue damage in BDL rats, in comparison to cholestatic liver, were 1) decrease of MDA levels, 2) increased CAT activity, 3) reduced XO activity, and 4) effect on terminal apoptotic reaction, shown as a decrease in DNase I and II activity.Therefore, UDCA may be useful in the preservation of liver function in cholestasis treatment.
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Affiliation(s)
- Dusan Sokolovic
- Department of Biochemistry, the University of Nis Medical School, Nis, Serbia.
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Waldeck W, Mueller G, Wiessler M, Tóth K, Braun K. Positioning effects of KillerRed inside of cells correlate with DNA strand breaks after activation with visible light. Int J Med Sci 2011; 8:97-105. [PMID: 21278894 PMCID: PMC3030142 DOI: 10.7150/ijms.8.97] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/13/2010] [Accepted: 01/20/2011] [Indexed: 01/30/2023] Open
Abstract
Fluorescent proteins (FPs) are established tools for new applications, not-restricted to the cell biological research. They could also be ideal in surgery enhancing the precision to differentiate between the target tissue and the surrounding healthy tissue. FPs like the KillerRed (KRED), used here, can be activated by excitation with visible day-light for emitting active electrons which produce reactive oxygen species (ROS) resulting in photokilling processes. It is a given that the extent of the KRED's cell toxicity depends on its subcellular localization. Evidences are documented that the nuclear lamina as well as especially the chromatin are critical targets for KRED-mediated ROS-based DNA damaging. Here we investigated the damaging effects of the KRED protein fused to the nuclear lamina and to the histone H2A DNA-binding protein. We detected a frequency of DNA strand breaks, dependent first on the illumination time, and second on the spatial distance between the localization at the chromatin and the site of ROS production. As a consequence we could identify defined DNA bands with 200, 400 and (600) bps as most prominent degradation products, presumably representing an internucleosomal DNA cleavage induced by KRED. These findings are not restricted to the detection of programmed cell death processes in the therapeutic field like PDT, but they can also contribute to a better understanding of the structure-function relations in the epigenomic world.
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Affiliation(s)
- Waldemar Waldeck
- German Cancer Research Center, Dept. of Biophysics of Macromolecules, INF 580, D-69120 Heidelberg, Germany
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Nouvelles cibles thérapeutiques du sepsis — Triggering receptor expressed on myeloid cells-1: une nouvelle cible thérapeutique au cours des pathologies inflammatoires. MEDECINE INTENSIVE REANIMATION 2011. [DOI: 10.1007/s13546-010-0135-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Tinazzi E, Puccetti A, Gerli R, Rigo A, Migliorini P, Simeoni S, Beri R, Dolcino M, Martinelli N, Corrocher R, Lunardi C. Serum DNase I, soluble Fas/FasL levels and cell surface Fas expression in patients with SLE: a possible explanation for the lack of efficacy of hrDNase I treatment. Int Immunol 2009; 21:237-43. [DOI: 10.1093/intimm/dxn142] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Levels of serum deoxyribonuclease I activity on admission in patients with acute myocardial infarction can be useful in predicting left ventricular enlargement due to remodeling. J Cardiol 2009; 53:196-203. [PMID: 19304122 DOI: 10.1016/j.jjcc.2008.10.013] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/13/2008] [Revised: 10/23/2008] [Accepted: 10/29/2008] [Indexed: 11/21/2022]
Abstract
OBJECTIVES Serum deoxyribonuclease I (DNase I) activity has recently been highlighted as a potential diagnostic marker for the early detection of an acute myocardial infarction (AMI). We evaluated whether the serum DNase I activity was associated with the parameters of the left ventricular (LV) remodeling after an AMI. METHODS We measured the serum DNase I activity in 45 patients with an AMI who were admitted to our hospital within approximately 4 h of the onset of their chest pain. We also evaluated the LV ejection fraction (LVEF), LV end-diastolic volume (LVEDV), and LV end-systolic volume (LVESV) of each patient by echocardiography at the time of admission and at 6 months after the onset of the AMI. RESULTS The serum DNase I activity peaked at 3.5+/-2.0 h after the onset of the symptoms in the patients with an AMI, thereafter exhibiting a time-dependent decline within 12 h, and a return to the basal level within 24 h in almost all cases. Neither the LVEF, LVEDV, nor LVESV in each patient on admission exhibited a significant correlation to the peak levels of the serum DNase I activity. Although there was no correlation between the peak DNase I activity and LVEF at 6 months after the onset, a significant positive correlation of the peak DNase I activity with LVEDV and LVESV (r=0.48, p<0.001 and r=0.34, p=0.02, respectively) was found. Furthermore, the LVEDV at 6 months after the onset in the high DNase I activity group (> 17.9 U/L) were significantly higher than those in the low DNase I activity group (< or = 17.9 U/L) (118.0+/-28.2 ml vs 89.3+/-25.4 ml, p=0.026). CONCLUSIONS The serum DNase I activity level may predict LV enlargement associated with remodeling after an AMI.
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Takeshita H, Soejima M, Koda Y, Yasuda T, Takatsuka H, Fujihara J. Gln222Arg (A2317G) polymorphism in the deoxyribonuclease I gene exhibits ethnic and functional differences. Clin Chem Lab Med 2009; 47:51-5. [DOI: 10.1515/cclm.2009.002] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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Urbonaviciute V, Fürnrohr BG, Meister S, Munoz L, Heyder P, De Marchis F, Bianchi ME, Kirschning C, Wagner H, Manfredi AA, Kalden JR, Schett G, Rovere-Querini P, Herrmann M, Voll RE. Induction of inflammatory and immune responses by HMGB1-nucleosome complexes: implications for the pathogenesis of SLE. ACTA ACUST UNITED AC 2008; 205:3007-18. [PMID: 19064698 PMCID: PMC2605236 DOI: 10.1084/jem.20081165] [Citation(s) in RCA: 411] [Impact Index Per Article: 25.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Autoantibodies against double-stranded DNA (dsDNA) and nucleosomes represent a hallmark of systemic lupus erythematosus (SLE). However, the mechanisms involved in breaking the immunological tolerance against these poorly immunogenic nuclear components are not fully understood. Impaired phagocytosis of apoptotic cells with consecutive release of nuclear antigens may contribute to the immune pathogenesis. The architectural chromosomal protein and proinflammatory mediator high mobility group box protein 1 (HMGB1) is tightly attached to the chromatin of apoptotic cells. We demonstrate that HMGB1 remains bound to nucleosomes released from late apoptotic cells in vitro. HMGB1–nucleosome complexes were also detected in plasma from SLE patients. HMGB1-containing nucleosomes from apoptotic cells induced secretion of interleukin (IL) 1β, IL-6, IL-10, and tumor necrosis factor (TNF) α and expression of costimulatory molecules in macrophages and dendritic cells (DC), respectively. Neither HMGB1-free nucleosomes from viable cells nor nucleosomes from apoptotic cells lacking HMGB1 induced cytokine production or DC activation. HMGB1-containing nucleosomes from apoptotic cells induced anti-dsDNA and antihistone IgG responses in a Toll-like receptor (TLR) 2–dependent manner, whereas nucleosomes from living cells did not. In conclusion, HMGB1–nucleosome complexes activate antigen presenting cells and, thereby, may crucially contribute to the pathogenesis of SLE via breaking the immunological tolerance against nucleosomes/dsDNA.
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Affiliation(s)
- Vilma Urbonaviciute
- Interdisciplinary Center of Clinical Research (IZKF), Research Group N2, Nikolaus Fiebiger Center of Molecular Medicine, University Hospital Erlangen, University of Erlangen-Nuremberg, Erlangen, Germany
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Zykova SN, Seredkina N, Benjaminsen J, Rekvig OP. Reduced fragmentation of apoptotic chromatin is associated with nephritis in lupus-prone (NZB × NZW)F1 mice. ACTA ACUST UNITED AC 2008; 58:813-25. [DOI: 10.1002/art.23276] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Jacob M, Mannherz HG, Napirei M. Chromatin breakdown by deoxyribonuclease1 promotes acetaminophen-induced liver necrosis: an ultrastructural and histochemical study on male CD-1 mice. Histochem Cell Biol 2007; 128:19-33. [PMID: 17530272 DOI: 10.1007/s00418-007-0289-3] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/26/2007] [Indexed: 12/30/2022]
Abstract
We analyzed in male wild-type (WT) and Dnase1 knockout (KO) CD-1 mice after acetaminophen (APAP)-intoxication the hepatolobular distribution of APAP-adducts in relation to DNA-damage by terminal deoxyribonucleotidyl-transferase dUTP nick end-labeling (TUNEL), the ultrastructural alterations of hepatocellular morphology and the intracellular localization of Dnase1. Treatment of WT-mice with 600 mg/kg APAP led to extensive pericentral necrosis. Electron microscopy (EM) demonstrated vesiculation of the rough endoplasmatic reticulum and swelling of mitochondria. Pericentral WT-hepatocyte nuclei exhibited pyknosis, karyorrhexis and karyolysis. In contrast, livers from treated KO-mice exhibited almost normal light microscopical structure and EM revealed only mild signs of hepatocellular damage. In WT-mice several layers of pericentral hepatocytes displayed APAP-adduct formation and subsequent DNA-damage, whereas in KO-animals only few cells were affected. Serum aminotransferases rose similarly in both mouse strains up to 12 h, thereafter increased only in WT-mice. Immunogold-EM revealed the translocation of Dnase1 from the rER into the nuclei of treated WT-mice. In KO-mice, APAP-adduct formation was retarded and less extensive suggesting that detoxification of APAP must have been more effective in KO-mice possibly due to the lack of energy depletion otherwise caused by Dnase1-induced DNA-damage in WT-mice.
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Affiliation(s)
- Monika Jacob
- Abteilung für Anatomie und Embryologie, Medizinische Fakultät, Ruhr-Universität Bochum, Universitätsstrasse 150, 44801 Bochum, Germany.
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Padron-Barthe L, Leprêtre C, Martin E, Counis MF, Torriglia A. Conformational modification of serpins transforms leukocyte elastase inhibitor into an endonuclease involved in apoptosis. Mol Cell Biol 2007; 27:4028-36. [PMID: 17403905 PMCID: PMC1900025 DOI: 10.1128/mcb.01959-06] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
The best-characterized biochemical feature of apoptosis is degradation of genomic DNA into oligonucleosomes. The endonuclease responsible for DNA degradation in caspase-dependent apoptosis is caspase-activated DNase. In caspase-independent apoptosis, different endonucleases may be activated according to the cell line and the original insult. Among the known effectors of caspase-independent cell death, L-DNase II (LEI [leukocyte elastase inhibitor]-derived DNase II) has been previously characterized by our laboratory. We have thus shown that this endonuclease derives from the serpin superfamily member LEI by posttranslational modification (A. Torriglia, P. Perani, J. Y. Brossas, E. Chaudun, J. Treton, Y. Courtois, and M. F. Counis, Mol. Cell. Biol. 18:3612-3619, 1998). In this work, we assessed the molecular mechanism involved in the change in the enzymatic activity of this molecule from an antiprotease to an endonuclease. We report that the cleavage of LEI by elastase at its reactive center loop abolishes its antiprotease activity and leads to a conformational modification that exposes an endonuclease active site and a nuclear localization signal. This represents a novel molecular mechanism for a complete functional conversion induced by changing the conformation of a serpin. We also show that this molecular transformation affects cellular fate and that both endonuclease activity and nuclear translocation of L-DNase II are needed to induce cell death.
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Affiliation(s)
- Laura Padron-Barthe
- INSERM U598, Institut Biomédical des Cordeliers, 15 rue de l'Ecole de Médecine, 75006 Paris, France
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