1
|
Bedoya-Pérez LP, Aguilar-Vera A, Sánchez-Pérez M, Utrilla J, Sohlenkamp C. Enhancing Escherichia coli abiotic stress resistance through ornithine lipid formation. Appl Microbiol Biotechnol 2024; 108:288. [PMID: 38587638 PMCID: PMC11001654 DOI: 10.1007/s00253-024-13130-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2023] [Revised: 02/21/2024] [Accepted: 03/27/2024] [Indexed: 04/09/2024]
Abstract
Escherichia coli is a common host for biotechnology and synthetic biology applications. During growth and fermentation, the microbes are often exposed to stress conditions, such as variations in pH or solvent concentrations. Bacterial membranes play a key role in response to abiotic stresses. Ornithine lipids (OLs) are a group of membrane lipids whose presence and synthesis have been related to stress resistance in bacteria. We wondered if this stress resistance could be transferred to bacteria not encoding the capacity to form OLs in their genome, such as E. coli. In this study, we engineered different E. coli strains to produce unmodified OLs and hydroxylated OLs by expressing the synthetic operon olsFC. Our results showed that OL formation improved pH resistance and increased biomass under phosphate limitation. Transcriptome analysis revealed that OL-forming strains differentially expressed stress- and membrane-related genes. OL-producing strains also showed better growth in the presence of the ionophore carbonyl cyanide 3-chlorophenylhydrazone (CCCP), suggesting reduced proton leakiness in OL-producing strains. Furthermore, our engineered strains showed improved heterologous violacein production at phosphate limitation and also at low pH. Overall, this study demonstrates the potential of engineering the E. coli membrane composition for constructing robust hosts with an increased abiotic stress resistance for biotechnology and synthetic biology applications. KEY POINTS: • Ornithine lipid production in E. coli increases biomass yield under phosphate limitation. • Engineered strains show an enhanced production phenotype under low pH stress. • Transcriptome analysis and CCCP experiments revealed reduced proton leakage.
Collapse
Affiliation(s)
- Leidy Patricia Bedoya-Pérez
- Centro de Ciencias Genómicas, Universidad Nacional Autónoma de México, Av. Universidad S/N Col. Chamilpa, C.P. 62210, Cuernavaca, Mor, México
| | - Alejandro Aguilar-Vera
- Centro de Ciencias Genómicas, Universidad Nacional Autónoma de México, Av. Universidad S/N Col. Chamilpa, C.P. 62210, Cuernavaca, Mor, México
| | - Mishael Sánchez-Pérez
- Centro de Ciencias Genómicas, Universidad Nacional Autónoma de México, Av. Universidad S/N Col. Chamilpa, C.P. 62210, Cuernavaca, Mor, México
| | - José Utrilla
- Centro de Ciencias Genómicas, Universidad Nacional Autónoma de México, Av. Universidad S/N Col. Chamilpa, C.P. 62210, Cuernavaca, Mor, México.
| | - Christian Sohlenkamp
- Centro de Ciencias Genómicas, Universidad Nacional Autónoma de México, Av. Universidad S/N Col. Chamilpa, C.P. 62210, Cuernavaca, Mor, México.
| |
Collapse
|
2
|
Öğüten PN, Engür Öztürk S, Dikmen M. The investigation of cytotoxic and apoptotic activity of Cl-amidine on the human U-87 MG glioma cell line. Medicine (Baltimore) 2024; 103:e37015. [PMID: 38394536 DOI: 10.1097/md.0000000000037015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/25/2024] Open
Abstract
BACKGROUND Peptidyl (protein) arginine deiminases (PADs) provide the transformation of peptidyl arginine to peptidyl citrulline in the presence of calcium with posttranslational modification. The dysregulated PAD activity plays an important role on too many diseases including also the cancer. In this study, it has been aimed to determine the potential cytotoxic and apoptotic activity of chlorine-amidine (Cl-amidine) which is a PAD inhibitor and whose effectiveness has been shown in vitro and in vivo studies recently on human glioblastoma cell line Uppsala 87 malignant glioma (U-87 MG) forming an in vitro model for the glioblastoma multiforme (GBM) which is the most aggressive and has the highest mortality among the brain tumors. METHODS In the study, the antiproliferative and apoptotic effects of Cl-amidine on GBM cancer model were investigated. The antiproliferative effects of Cl-amidine on U-87 MG cells were determined by 4-[3-(4-iodophenyl)-2-(4-nitrophenyl)-2H-5-tetrazolio]-1,3-benzene disulfonate method at the 24th and 48th hours. The apoptotic effects were analyzed by Annexin V and Propidium iodide staining, caspase-3 activation, and mitochondrial membrane polarization (5,5', 6,6'-tetrachloro-1,1', 3,3' tetraethyl benzimidazolyl carbocyanine iodide) methods in the flow cytometry. RESULTS It has been determined that Cl-amidine exhibits notable antiproliferative properties on U-87 MG cell line in a time and concentration-dependent manner, as determined through the 4-[3-(4-iodophenyl)-2-(4-nitrophenyl)-2H-5-tetrazolio]-1,3-benzene disulfonate assay. Assessment of apoptotic effects via Annexin V and Propidium iodide staining and 5,5', 6,6'-tetrachloro-1,1', 3,3' tetraethyl benzimidazolyl carbocyanine iodide methods has revealed significant efficacy, particularly following a 24-hour exposure period. It has been observed that Cl-amidine induces apoptosis in cells by enhancing mitochondrial depolarization, independently of caspase-3 activation. Furthermore, regarding its impact on healthy cells, it has been demonstrated that Cl-amidine shows lower cytotoxic effects when compared to carmustine, an important therapeutic agent for glioblastoma. CONCLUSION The findings of this study have shown that Cl-amidine exhibits significant potential as an anticancer agent in the treatment of GBM. This conclusion is based on its noteworthy antiproliferative and apoptotic effects observed in U-87 MG cells, as well as its reduced cytotoxicity toward healthy cells in comparison to existing treatments. We propose that the antineoplastic properties of Cl-amidine should be further investigated through a broader spectrum of cancer cell types. Moreover, we believe that investigating the synergistic interactions of Cl-amidine with single or combination therapies holds promise for the discovery of novel anticancer agents.
Collapse
Affiliation(s)
- Pinar Naile Öğüten
- Faculty of Medicine, Department of Histology, Samsun University, Samsun, Turkey
| | - Selin Engür Öztürk
- Department of Pharmacy Services, Tavas Vocational School of Health Services, Pamukkale University, Denizli, Turkey
| | - Miriş Dikmen
- Department of Pharmacology, Faculty of Pharmacy, Anadolu University, Eskişehir, Turkey
| |
Collapse
|
3
|
Reydams H, Toledo-Silva B, Mertens K, Piepers S, Vereecke N, Souza FN, Haesebrouck F, De Vliegher S. Phenotypic and genotypic assessment of iron acquisition in diverse bovine-associated non-aureus staphylococcal strains. Vet Res 2024; 55:6. [PMID: 38217046 PMCID: PMC10785429 DOI: 10.1186/s13567-023-01260-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2023] [Accepted: 12/11/2023] [Indexed: 01/14/2024] Open
Abstract
Although the role of iron in bacterial infections has been well described for Staphylococcus (S.) aureus, iron acquisition in (bovine-associated) non-aureus staphylococci and mammaliicocci (NASM) remains insufficiently mapped. This study aimed at elucidating differences between four diverse bovine NASM field strains from two species, namely S. chromogenes and S. equorum, in regards to iron uptake (with ferritin and lactoferrin as an iron source) and siderophore production (staphyloferrin A and staphyloferrin B) by investigating the relationship between the genetic basis of iron acquisition through whole genome sequencing (WGS) with their observed phenotypic behavior. The four field strains were isolated in a previous study from composite cow milk (CCM) and bulk tank milk (BTM) in a Flemish dairy herd. Additionally, two well-studied S. chromogenes isolates originating from a persistent intramammary infection and from a teat apex were included for comparative purpose in all assays. Significant differences between species and strains were identified. In our phenotypical iron acquisition assay, while lactoferrin had no effect on growth recovery for all strains in iron deficient media, we found that ferritin served as an effective source for growth recovery in iron-deficient media for S. chromogenes CCM and BTM strains. This finding was further corroborated by analyzing potential ferritin iron acquisition genes using whole-genome sequencing data, which showed that all S. chromogenes strains contained hits for all three proposed ferritin reductive pathway genes. Furthermore, a qualitative assay indicated siderophore production by all strains, except for S. equorum. This lack of siderophore production in S. equorum was supported by a quantitative assay, which revealed significantly lower or negligible siderophore amounts compared to S. aureus and S. chromogenes. The WGS analysis showed that all tested strains, except for S. equorum, possessed complete staphyloferrin A (SA)-synthesis and export operons, which likely explains the phenotypic absence of siderophore production in S. equorum strains. While analyzing the staphyloferrin A and staphyloferrin B operon landscapes for all strains, we noticed some differences in the proteins responsible for iron acquisition between different species. However, within strains of the same species, the siderophore-related proteins remained conserved. Our findings contribute valuable insights into the genetic elements associated with bovine NASM pathogenesis.
Collapse
Affiliation(s)
- Helena Reydams
- M-Team and Mastitis and Milk Quality Research Unit, Department of Internal Medicine, Reproduction, and Population Medicine, Faculty of Veterinary Medicine, Ghent University, 9820, Merelbeke, Belgium.
| | - Bruno Toledo-Silva
- M-Team and Mastitis and Milk Quality Research Unit, Department of Internal Medicine, Reproduction, and Population Medicine, Faculty of Veterinary Medicine, Ghent University, 9820, Merelbeke, Belgium
| | - Kristien Mertens
- M-Team and Mastitis and Milk Quality Research Unit, Department of Internal Medicine, Reproduction, and Population Medicine, Faculty of Veterinary Medicine, Ghent University, 9820, Merelbeke, Belgium
| | - Sofie Piepers
- M-Team and Mastitis and Milk Quality Research Unit, Department of Internal Medicine, Reproduction, and Population Medicine, Faculty of Veterinary Medicine, Ghent University, 9820, Merelbeke, Belgium
| | - Nick Vereecke
- Department of Translational Physiology, Infectiology and Public Health, Faculty of Veterinary Medicine, Ghent University, 9820, Merelbeke, Belgium
- PathoSense BV, Lier, Belgium
| | - Fernando Nogueira Souza
- Veterinary Clinical Immunology Research Group, Department of Internal Medicine, Faculty of Veterinary Medicine and Animal Sciences, University of São Paulo, Prof. Orlando Marques de Paiva Av. 87, São Paulo, 05508-270, Brazil
| | - Freddy Haesebrouck
- Department of Pathobiology, Pharmacology and Zoological Medicine, Faculty of Veterinary Medicine, Ghent University, 9820, Merelbeke, Belgium
| | - Sarne De Vliegher
- M-Team and Mastitis and Milk Quality Research Unit, Department of Internal Medicine, Reproduction, and Population Medicine, Faculty of Veterinary Medicine, Ghent University, 9820, Merelbeke, Belgium
| |
Collapse
|
4
|
Shen Y, You Q, Wu Y, Wu J. Inhibition of PAD4-mediated NET formation by cl-amidine prevents diabetes development in nonobese diabetic mice. Eur J Pharmacol 2022; 916:174623. [PMID: 34767782 DOI: 10.1016/j.ejphar.2021.174623] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2021] [Revised: 10/30/2021] [Accepted: 11/03/2021] [Indexed: 12/19/2022]
Abstract
Many evidences indicated that neutrophil extracellular traps (NETs) play pathogenic roles in type 1 diabetes (T1D). Peptidylarginine deiminases 4 (PAD4) has been proved to be indispensable for generation of NETs. In the current study, we investigated whether oral administration of cl-amidine, an effective inhibitor of PAD4, protects non-obese diabetic (NOD) mice from T1D development. Female NOD mice were orally administrated with cl-amidine (5 μg/g body weight) from the age of 8 weeks up to 16 weeks. It showed that cl-amidine inhibit NET formation in vitro and in vivo. The onset of T1D was delayed nearly 8 weeks and the incidence of disease was significantly decreased in cl-amidine treated mice compared with the control group. Moreover, cl-amidine decreased the serum levels of anti-citrullinated peptide antibody (ACPA) and anti-neutrophil cytoplasmic antibodies (ANCA) in NOD mice. Also, it decreased generation of T1D autoantibodies such as glutamic acid decarboxylase antibody (GADA), tyrosine phosphatase-related islet antigen-2 antibody (IA2A) and zinc transporter 8 antibody (ZnT8A), which were strongly correlated with the reduced serum PAD4 and MPO-DNA levels. Furthermore, cl-amidine administration inhibited pancreatic inflammation and increased frequency of regulatory T cells in pancreatic lymph nodes (PLNs). In addition, cl-amidine improved gut barrier dysfunction and decreased the serum level of lipopolysaccharide (LPS), which was positively correlated with the NETs markers (PAD4 and MPO-DNA) and T1D autoantibody IA2A. In conclusion, our data showed that orally delivery of cl-amidine effectively prevent T1D development and suggested inhibition of PAD4-dependent NET formation as a potential way of clinical treatment in T1D.
Collapse
MESH Headings
- Administration, Oral
- Animals
- Autoantibodies/blood
- Autoimmune Diseases/prevention & control
- Blood Glucose/drug effects
- Diabetes Mellitus, Experimental/metabolism
- Diabetes Mellitus, Experimental/pathology
- Diabetes Mellitus, Experimental/prevention & control
- Diabetes Mellitus, Type 1/metabolism
- Diabetes Mellitus, Type 1/pathology
- Diabetes Mellitus, Type 1/prevention & control
- Extracellular Traps/drug effects
- Female
- Inflammation/prevention & control
- Intestines/drug effects
- Mice, Inbred NOD
- Ornithine/administration & dosage
- Ornithine/analogs & derivatives
- Ornithine/pharmacology
- Protective Agents/administration & dosage
- Protective Agents/pharmacology
- Protein-Arginine Deiminase Type 4/antagonists & inhibitors
- Protein-Arginine Deiminase Type 4/blood
- Protein-Arginine Deiminase Type 4/metabolism
- T-Lymphocytes, Regulatory/drug effects
- T-Lymphocytes, Regulatory/metabolism
- Tight Junctions/drug effects
- Mice
Collapse
Affiliation(s)
- Yiming Shen
- College of Life Science and Technology, China Pharmaceutical University, Nanjing, China
| | - Qi You
- College of Life Science and Technology, China Pharmaceutical University, Nanjing, China
| | - Yiling Wu
- College of Life Science and Technology, China Pharmaceutical University, Nanjing, China
| | - Jie Wu
- College of Life Science and Technology, China Pharmaceutical University, Nanjing, China.
| |
Collapse
|
5
|
Ban I, Sugawa H, Nagai R. Protein Modification with Ribose Generates Nδ-(5-hydro-5-methyl-4-imidazolone-2-yl)-ornithine. Int J Mol Sci 2022; 23:ijms23031224. [PMID: 35163152 PMCID: PMC8835445 DOI: 10.3390/ijms23031224] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2021] [Revised: 01/12/2022] [Accepted: 01/19/2022] [Indexed: 12/28/2022] Open
Abstract
Advanced glycation end products (AGEs) are associated with diabetes and its complications. AGEs are formed by the non-enzymatic reactions of proteins and reducing sugars, such as glucose and ribose. Ribose is widely used in glycation research as it generates AGEs more rapidly than glucose. This study analyzed the AGE structures generated from ribose-modified protein by liquid chromatography-quadrupole time-of-flight mass spectrometry. Among these AGEs, Nδ-(5-hydro-5-methyl-4-imidazolone-2-yl)-ornithine (MG-H1) was the most abundant in ribose-glycated bovine serum albumin (ribated-BSA) among others, such as Nε-(carboxymethyl) lysine, Nε-(carboxyethyl) lysine, and Nω-(carboxymethyl) arginine. Surprisingly, MG-H1 was produced by ribated-BSA in a time-dependent manner, whereas methylglyoxal levels (MG) were under the detectable level. In addition, Trapa bispinosa Roxb. hot water extract (TBE) possesses several anti-oxidative compounds, such as ellagic acid, and has been reported to inhibit the formation of MG-H1 in vivo. Thus, we evaluated the inhibitory effects of TBE on MG-H1 formation using ribose- or MG-modified proteins. TBE inhibited MG-H1 formation in gelatin incubated with ribose and ribated-BSA, but not in MG-modified gelatin. Furthermore, MG-H1 formation was inhibited by diethylenetriaminepentaacetic acid. These results demonstrated that ribose reacts with proteins to generate Amadori compounds and form MG-H1 via oxidation.
Collapse
|
6
|
Ahmed D, Puthussery H, Basnett P, Knowles JC, Lange S, Roy I. Controlled Delivery of Pan-PAD-Inhibitor Cl-Amidine Using Poly(3-Hydroxybutyrate) Microspheres. Int J Mol Sci 2021; 22:ijms222312852. [PMID: 34884657 PMCID: PMC8658019 DOI: 10.3390/ijms222312852] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2021] [Revised: 11/23/2021] [Accepted: 11/25/2021] [Indexed: 12/13/2022] Open
Abstract
This study deals with the process of optimization and synthesis of Poly(3-hydroxybutyrate) microspheres with encapsulated Cl-amidine. Cl-amidine is an inhibitor of peptidylarginine deiminases (PADs), a group of calcium-dependent enzymes, which play critical roles in a number of pathologies, including autoimmune and neurodegenerative diseases, as well as cancer. While Cl-amidine application has been assessed in a number of in vitro and in vivo models; methods of controlled release delivery remain to be investigated. P(3HB) microspheres have proven to be an effective delivery system for several compounds applied in antimicrobial, wound healing, cancer, and cardiovascular and regenerative disease models. In the current study, P(3HB) microspheres with encapsulated Cl-amidine were produced in a size ranging from ~4–5 µm and characterized for surface morphology, porosity, hydrophobicity and protein adsorption, in comparison with empty P(3HB) microspheres. Cl-amidine encapsulation in P(3HB) microspheres was optimized, and these were found to be less hydrophobic, compared with the empty microspheres, and subsequently adsorbed a lower amount of protein on their surface. The release kinetics of Cl-amidine from the microspheres were assessed in vitro and expressed as a function of encapsulation efficiency. There was a burst release of ~50% Cl-amidine in the first 24 h and a zero order release from that point up to 16 days, at which time point ~93% of the drug had been released. As Cl-amidine has been associated with anti-cancer effects, the Cl-amidine encapsulated microspheres were assessed for the inhibition of vascular endothelial growth factor (VEGF) expression in the mammalian breast cancer cell line SK-BR-3, including in the presence of the anti-proliferative drug rapamycin. The cytotoxicity of the combinatorial effect of rapamycin with Cl-amidine encapsulated P(3HB) microspheres was found to be 3.5% more effective within a 24 h period. The cells treated with Cl-amidine encapsulated microspheres alone, were found to have 36.5% reduction in VEGF expression when compared with untreated SK-BR-3 cells. This indicates that controlled release of Cl-amidine from P(3HB) microspheres may be effective in anti-cancer treatment, including in synergy with chemotherapeutic agents. Using controlled drug-delivery of Cl-amidine encapsulated in Poly(3-hydroxybutyrate) microspheres may be a promising novel strategy for application in PAD-associated pathologies.
Collapse
Affiliation(s)
- Dina Ahmed
- Tissue Architecture and Regeneration Research Group, School of Life Sciences, University of Westminster, London W1W 6XH, UK;
| | - Hima Puthussery
- School of Life Sciences, University of Westminster, London W1W 6XH, UK; (H.P.); (P.B.)
| | - Pooja Basnett
- School of Life Sciences, University of Westminster, London W1W 6XH, UK; (H.P.); (P.B.)
| | - Jonathan C. Knowles
- Department of Biomaterials and Tissue Engineering, Eastman Dental Institute, University College London, Royal Free Hospital, Rowland Hill Street, London NW3 2PF, UK;
| | - Sigrun Lange
- Tissue Architecture and Regeneration Research Group, School of Life Sciences, University of Westminster, London W1W 6XH, UK;
- Correspondence: emails: (S.L.); (I.R.); Tel.: +44-(0)207-911-5000 (ext. 64832) (S.L.); +44-(0)114-222-5962 (ext. 64096) (I.R.)
| | - Ipsita Roy
- Department of Materials Science and Engineering, Faculty of Engineering, University of Sheffield, Sheffield S10 2TN, UK
- Correspondence: emails: (S.L.); (I.R.); Tel.: +44-(0)207-911-5000 (ext. 64832) (S.L.); +44-(0)114-222-5962 (ext. 64096) (I.R.)
| |
Collapse
|
7
|
Rahimi RS, Brown KA, Flamm SL, Brown RS. Overt Hepatic Encephalopathy: Current Pharmacologic Treatments and Improving Clinical Outcomes. Am J Med 2021; 134:1330-1338. [PMID: 34242619 DOI: 10.1016/j.amjmed.2021.06.007] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/11/2021] [Revised: 06/11/2021] [Accepted: 06/14/2021] [Indexed: 02/07/2023]
Abstract
Overt hepatic encephalopathy is a generally reversible neurologic complication of cirrhosis. Overt hepatic encephalopathy has been associated with poor hospitalization- and mortality-related outcomes, which is important given increasing hepatic encephalopathy-related hospitalizations over time. The aim of this narrative review is to provide an overview of hospital- and mortality-related outcomes in patients with overt hepatic encephalopathy and the pharmacologic therapies that may improve these outcomes. Guideline-recommended prophylaxis with lactulose (first-line therapy) or secondary prophylaxis with rifaximin plus lactulose decreases hospital admissions and mortality rates. Rifaximin or lactulose treatment was beneficial for reducing the hospitalization rate in patients with hepatic encephalopathy compared with no treatment. Further, retrospective studies have shown that rifaximin with or without lactulose was effective for decreasing the number of hepatic encephalopathy episodes, hepatic encephalopathy-related hospitalizations, and duration of hospitalization. Ornithine phenylacetate, an ammonia-reducing agent currently in development, is also being investigated in hospitalized patients with hepatic encephalopathy. Overall, data support that prophylaxis for the prevention of hepatic encephalopathy recurrence improves outcomes in patients with cirrhosis and a history of hepatic encephalopathy.
Collapse
Affiliation(s)
- Robert S Rahimi
- Baylor Scott and White Hospital, Baylor University Medical Center, Dallas, Tex.
| | - Kimberly A Brown
- Division of Gastroenterology and Hepatology, Henry Ford Hospital, Detroit, Mich
| | - Steven L Flamm
- Division of Gastroenterology and Hepatology, Comprehensive Transplant Center, Northwestern University Feinberg School of Medicine, Chicago, Ill
| | - Robert S Brown
- Weill Cornell Medicine, Center for Liver Disease, New York, NY
| |
Collapse
|
8
|
Antognelli C, Marinucci L, Frosini R, Macchioni L, Talesa VN. Metastatic Prostate Cancer Cells Secrete Methylglyoxal-Derived MG-H1 to Reprogram Human Osteoblasts into a Dedifferentiated, Malignant-like Phenotype: A Possible Novel Player in Prostate Cancer Bone Metastases. Int J Mol Sci 2021; 22:ijms221910191. [PMID: 34638532 PMCID: PMC8508123 DOI: 10.3390/ijms221910191] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2021] [Revised: 09/09/2021] [Accepted: 09/16/2021] [Indexed: 02/07/2023] Open
Abstract
Bone metastases from prostate cancer (PCa) result from a complex cross-talk between PCa cells and osteoblasts (OB). Thus, targeting this interplay has become an attractive strategy to interfere with PCa bone dissemination. The agents currently used in clinical trials have proved ineffective, boosting research to identify additional mechanisms that may be involved in this two-directional talk. Here, we investigated whether and how 5-hydro-5-methylimidazolone (MG-H1), a specific methylglyoxal (MG)-derived advanced glycation end product (AGE), was a novel player in the dialogue between PCa and OB to drive PCa bone metastases. Conditioned medium from osteotropic PC3 PCa cells, pre-treated or not with a specific MG scavenger, was administrated to human primary OB and cell morphology, mesenchymal trans-differentiation, pro-osteogenic determinants, PCa-specific molecules, and migration/invasion were studied by phase-contrast microscopy, real-time PCR, western blot and specific assays, respectively. We found that PC3 cells were able to release MG-H1 that, by binding to the receptor for AGEs (RAGE) on OB, reprogrammed them into a less-differentiate phenotype, endowed with some PCa-specific molecular features and malignant properties, in a mechanism involving reactive oxidative species (ROS) production and NF-kB pathway activation. These findings provide novel insights into the mechanisms of PCa osteoblastic metastases and foster in vivo research toward new therapeutic strategies interfering with PCa/OB cross-talk.
Collapse
Affiliation(s)
- Cinzia Antognelli
- Department of Medicine and Surgery, Bioscience and Medical Embryology Division, University of Perugia, L. Severi Square, 06129 Perugia, Italy; (L.M.); (R.F.); (V.N.T.)
- Correspondence: ; Tel.: +39-075-585-8354
| | - Lorella Marinucci
- Department of Medicine and Surgery, Bioscience and Medical Embryology Division, University of Perugia, L. Severi Square, 06129 Perugia, Italy; (L.M.); (R.F.); (V.N.T.)
| | - Roberta Frosini
- Department of Medicine and Surgery, Bioscience and Medical Embryology Division, University of Perugia, L. Severi Square, 06129 Perugia, Italy; (L.M.); (R.F.); (V.N.T.)
| | - Lara Macchioni
- Department of Medicine and Surgery, Biochemistry and Physiology Division, University of Perugia, L. Severi Square, 06129 Perugia, Italy;
| | - Vincenzo Nicola Talesa
- Department of Medicine and Surgery, Bioscience and Medical Embryology Division, University of Perugia, L. Severi Square, 06129 Perugia, Italy; (L.M.); (R.F.); (V.N.T.)
| |
Collapse
|
9
|
Guardado-Valdivia L, Chacón-López A, Murillo J, Poveda J, Hernández-Flores JL, Xoca-Orozco L, Aguilera S. The Pbo Cluster from Pseudomonas syringae pv. Phaseolicola NPS3121 Is Thermoregulated and Required for Phaseolotoxin Biosynthesis. Toxins (Basel) 2021; 13:toxins13090628. [PMID: 34564632 PMCID: PMC8473136 DOI: 10.3390/toxins13090628] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2021] [Revised: 09/02/2021] [Accepted: 09/03/2021] [Indexed: 11/16/2022] Open
Abstract
The bean (Phaseolus vulgaris) pathogen Pseudomonas syringae pv. phaseolicola NPS3121 synthesizes phaseolotoxin in a thermoregulated way, with optimum production at 18 °C. Gene PSPPH_4550 was previously shown to be thermoregulated and required for phaseolotoxin biosynthesis. Here, we established that PSPPH_4550 is part of a cluster of 16 genes, the Pbo cluster, included in a genomic island with a limited distribution in P. syringae and unrelated to the possession of the phaseolotoxin biosynthesis cluster. We identified typical non-ribosomal peptide synthetase, and polyketide synthetase domains in several of the pbo deduced products. RT-PCR and the analysis of polar mutants showed that the Pbo cluster is organized in four transcriptional units, including one monocistronic and three polycistronic. Operons pboA and pboO are both essential for phaseolotoxin biosynthesis, while pboK and pboJ only influence the amount of toxin produced. The three polycistronic units were transcribed at high levels at 18 °C but not at 28 °C, whereas gene pboJ was constitutively expressed. Together, our data suggest that the Pbo cluster synthesizes secondary metabolite(s), which could participate in the regulation of phaseolotoxin biosynthesis.
Collapse
Affiliation(s)
- Lizeth Guardado-Valdivia
- Laboratorio Integral de Investigación en Alimentos, Departamento de Química y Bioquímica, Tecnológico Nacional de México, Instituto Tecnológico de Tepic, 63175 Nayarit, Mexico; (L.G.-V.); (A.C.-L.)
| | - Alejandra Chacón-López
- Laboratorio Integral de Investigación en Alimentos, Departamento de Química y Bioquímica, Tecnológico Nacional de México, Instituto Tecnológico de Tepic, 63175 Nayarit, Mexico; (L.G.-V.); (A.C.-L.)
| | - Jesús Murillo
- Institute for Multidisciplinary Research in Applied Biology (IMAB), Universidad Pública de Navarra (UPNA), Edificio de Agrobiotecnología, Avda. de Pamplona 123, 31192 Mutilva Baja, Spain; (J.M.); (J.P.)
| | - Jorge Poveda
- Institute for Multidisciplinary Research in Applied Biology (IMAB), Universidad Pública de Navarra (UPNA), Edificio de Agrobiotecnología, Avda. de Pamplona 123, 31192 Mutilva Baja, Spain; (J.M.); (J.P.)
| | - José Luis Hernández-Flores
- Centro de Investigación y Estudios Avanzados del IPN, Departamento de Ingeniería Genética, Irapuato, 36821 Guanajuato, Mexico;
| | - Luis Xoca-Orozco
- Departamento de Ingeniería Bioquímica, Instituto Tecnológico Superior de Purísima del Rincón, Purísima del Rincón, 36413 Guanajuato, Mexico;
| | - Selene Aguilera
- Laboratorio Integral de Investigación en Alimentos, Departamento de Química y Bioquímica, Tecnológico Nacional de México, Instituto Tecnológico de Tepic, 63175 Nayarit, Mexico; (L.G.-V.); (A.C.-L.)
- Correspondence:
| |
Collapse
|
10
|
Aglago EK, Schalkwijk CG, Freisling H, Fedirko V, Hughes DJ, Jiao L, Dahm CC, Olsen A, Tjønneland A, Katzke V, Johnson T, Schulze MB, Aleksandrova K, Masala G, Sieri S, Simeon V, Tumino R, Macciotta A, Bueno-de-Mesquita B, Skeie G, Gram IT, Sandanger T, Jakszyn P, Sánchez MJ, Amiano P, Colorado-Yohar SM, Gurrea AB, Perez-Cornago A, Mayén AL, Weiderpass E, Gunter MJ, Heath AK, Jenab M. Plasma concentrations of advanced glycation end-products and colorectal cancer risk in the EPIC study. Carcinogenesis 2021; 42:705-713. [PMID: 33780524 PMCID: PMC8162627 DOI: 10.1093/carcin/bgab026] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2020] [Revised: 03/02/2021] [Accepted: 03/25/2021] [Indexed: 02/07/2023] Open
Abstract
Advanced glycation end-products (AGEs) are a heterogeneous group of compounds formed by the non-enzymatic reaction between amino acids and reducing sugars, or dicarbonyls as intermediate compounds. Experimental studies suggest that AGEs may promote colorectal cancer, but prospective epidemiologic studies are inconclusive. We conducted a case-control study nested within a large European cohort. Plasma concentrations of three protein-bound AGEs-Nε-(carboxy-methyl)lysine (CML), Nε-(carboxy-ethyl)lysine (CEL) and Nδ-(5-hydro-5-methyl-4-imidazolon-2-yl)-ornithine (MG-H1)-were measured by ultra-performance liquid chromatography-tandem mass spectrometry in baseline samples collected from 1378 incident primary colorectal cancer cases and 1378 matched controls. Multivariable-adjusted odds ratios (ORs) and 95% confidence intervals (CIs) were computed using conditional logistic regression for colorectal cancer risk associated with CML, CEL, MG-H1, total AGEs, and [CEL+MG-H1: CML] and [CEL:MG-H1] ratios. Inverse colorectal cancer risk associations were observed for CML (OR comparing highest to lowest quintile, ORQ5 versus Q1 = 0.40, 95% CI: 0.27-0.59), MG-H1 (ORQ5 versus Q1 = 0.73, 95% CI: 0.53-1.00) and total AGEs (OR Q5 versus Q1 = 0.52, 95% CI: 0.37-0.73), whereas no association was observed for CEL. A higher [CEL+MG-H1: CML] ratio was associated with colorectal cancer risk (ORQ5 versus Q1 = 1.91, 95% CI: 1.31-2.79). The associations observed did not differ by sex, or by tumour anatomical sub-site. Although individual AGEs concentrations appear to be inversely associated with colorectal cancer risk, a higher ratio of methylglyoxal-derived AGEs versus those derived from glyoxal (calculated by [CEL+MG-H1: CML] ratio) showed a strong positive risk association. Further insight on the metabolism of AGEs and their dicarbonyls precursors, and their roles in colorectal cancer development is needed.
Collapse
Affiliation(s)
- Elom K Aglago
- Nutrition and Metabolism Section, International Agency for Research on Cancer, Lyon, France
| | - Casper G Schalkwijk
- Department of Internal Medicine, CARIM School for Cardiovascular Diseases, Maastricht University Medical Center, Maastricht, The Netherlands
| | - Heinz Freisling
- Nutrition and Metabolism Section, International Agency for Research on Cancer, Lyon, France
| | - Veronika Fedirko
- Department of Epidemiology, Rollins School of Public Health, Emory University, Atlanta, GA, USA
| | - David J Hughes
- Cancer Biology and Therapeutics Group (CBT), Conway Institute, School of Biomolecular and Biomedical Science (SBBS), University College Dublin, Dublin, Ireland
| | - Li Jiao
- Department of Medicine, Baylor College of Medicine, Houston, TX, USA
| | | | - Anja Olsen
- Department of Public Health, Aarhus University, Aarhus, Denmark
- Danish Cancer Society Research Center, København, Denmark
| | - Anne Tjønneland
- Danish Cancer Society Research Center, København, Denmark
- Department of Public Health, University of Copenhagen, Copenhagen, Denmark
| | - Verena Katzke
- Division of Cancer Epidemiology, German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Theron Johnson
- Division of Cancer Epidemiology, German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Matthias B Schulze
- Department of Molecular Epidemiology, German Institute of Human Nutrition Potsdam-Rehbruecke, Nuthetal, Germany
- Institute of Nutrition Science, University of Potsdam, Nuthetal, Germany
| | - Krasimira Aleksandrova
- Institute of Nutrition Science, University of Potsdam, Nuthetal, Germany
- Nutrition, Immunity and Metabolism Senior Scientist Group, Department of Nutrition and Gerontology, German Institute of Human Nutrition Potsdam-Rehbruecke (DIfE), Nuthetal, Germany
| | - Giovanna Masala
- Cancer Risk Factors and Life-Style Epidemiology Unit, Institute for Cancer Research, Prevention and Clinical Network-ISPRO, Florence, Italy
| | - Sabina Sieri
- Epidemiology and Prevention Unit, Fondazione IRCCS Istituto Nazionale dei Tumori di Milano, Milano, Italy
| | - Vittorio Simeon
- Dipartimento di Salute Mentale e Fisica e Medicina Preventiva, University ‘Luigi Vanvitelli’, Napoli, Italy
| | - Rosario Tumino
- Cancer Registry and Histopathology Department, Provincial Health Authority (ASP 7), Ragusa, Italy
| | - Alessandra Macciotta
- Department of Clinical and Biological Sciences, University of Turin, Torino, Italy
| | - Bas Bueno-de-Mesquita
- Department for Determinants of Chronic Diseases (DCD), National Institute for Public Health and the Environment (RIVM), PO Box 1, 3720 BA Bilthoven, The Netherlands
| | - Guri Skeie
- Faculty of Health Sciences, Department of Community Medicine, University of Tromsø, The Arctic University of Norway, Tromsø, Norway
| | - Inger Torhild Gram
- Faculty of Health Sciences, Department of Community Medicine, University of Tromsø, The Arctic University of Norway, Tromsø, Norway
| | - Torkjel Sandanger
- Faculty of Health Sciences, Department of Community Medicine, University of Tromsø, The Arctic University of Norway, Tromsø, Norway
| | - Paula Jakszyn
- Unit of Nutrition and Cancer, Cancer Epidemiology Research Programme, Catalan Institute of Oncology, Barcelona, Spain
- Blanquerna School of Health Sciences, Ramon Llull University, Barcelona, Spain
| | - Maria-Jose Sánchez
- Escuela Andaluza de Salud Pública (EASP), Granada, Spain
- Instituto de Investigación Biosanitaria ibs.Granada, Granada, Spain
- Department of Preventive Medicine and Public Health, University of Granada, Granada, Spain
- Centro de Investigación Biomédica en Red de Epidemiología y Salud Pública (CIBERESP), Madrid, Spain
| | - Pilar Amiano
- Centro de Investigación Biomédica en Red de Epidemiología y Salud Pública (CIBERESP), Madrid, Spain
- Public Health Division of Gipuzkoa, BioDonostia Research Institute, Donostia-San Sebastian, Spain
| | - Sandra M Colorado-Yohar
- Centro de Investigación Biomédica en Red de Epidemiología y Salud Pública (CIBERESP), Madrid, Spain
- Department of Epidemiology, Murcia Regional Health Council, IMIB-Arrixaca, Murcia, Spain
- Research Group on Demography and Health, National Faculty of Public Health, University of Antioquia, Medellín, Colombia
| | - Aurelio Barricarte Gurrea
- Centro de Investigación Biomédica en Red de Epidemiología y Salud Pública (CIBERESP), Madrid, Spain
- Navarra Public Health Institute, Pamplona, Spain
- Navarra Institute for Health Research (IdiSNA), Pamplona, Spain
| | - Aurora Perez-Cornago
- Cancer Epidemiology Unit, Nuffield Department of Population Health, University of Oxford, Oxford, UK
| | - Ana-Lucia Mayén
- Nutrition and Metabolism Section, International Agency for Research on Cancer, Lyon, France
| | - Elisabete Weiderpass
- Office of the Director, International Agency for Research on Cancer (IARC), Lyon, France
| | - Marc J Gunter
- Nutrition and Metabolism Section, International Agency for Research on Cancer, Lyon, France
| | - Alicia K Heath
- Department of Epidemiology and Biostatistics, School of Public Health, Imperial College London, London, UK
| | - Mazda Jenab
- Nutrition and Metabolism Section, International Agency for Research on Cancer, Lyon, France
| |
Collapse
|
11
|
Siddiqui AZ, Bhatti UF, Deng Q, Biesterveld BE, Tian Y, Wu Z, Dahl J, Liu B, Xu J, Koike Y, Song J, Zhang J, Li Y, Alam HB, Williams AM. Cl-Amidine Improves Survival and Attenuates Kidney Injury in a Rabbit Model of Endotoxic Shock. Surg Infect (Larchmt) 2021; 22:421-426. [PMID: 32833601 DOI: 10.1089/sur.2020.189] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Objective: Sepsis causes millions of deaths on a global scale annually. Activation of peptidylarginine deiminase (PAD) enzymes in sepsis causes citrullination of histones, which results in neutrophil extracellular trap formation and sepsis progression. This study evaluates pan-PAD inhibitor, Cl-amidine, in a model of lipopolysaccharide (LPS)-induced endotoxic shock in rabbits. We hypothesized that Cl-amidine would improve survival and attenuate kidney injury. Methods: In the survival model, rabbits were injected injected intravenously with 1 mg/kg of LPS, and then randomly assigned either to receive dimethyl sulfoxide (DMSO; 1 mcL/g) or Cl-amidine (10 mg/kg diluted in 1 mcL/g DMSO). They were then monitored for 14 days to evaluate survival. In the non-survival experiment, the same insult and treatment were administered, however; the animals were euthanized 12 hours after LPS injection for kidney harvest. Acute kidney injury (AKI) scoring was performed by a histopathologist who was blinded to the group assignment. Serial blood samples were also collected and compared. Results: Rabbits that received Cl-amidine had a higher survival (72%) compared with the rabbits that received DMSO (14%; p < 0.05). Cl-amidine-treated rabbits had lower (p < 0.05) histopathologic AKI scores, as well as plasma creatinine and blood urea nitrogen (BUN) levels 12 hours after insult. Conclusions: Pan-PAD inhibitor Cl-amidine improves survival and attenuates kidney injury in LPS-induced endotoxic shock in rabbits.
Collapse
Affiliation(s)
- Ali Z Siddiqui
- Department of Surgery, University of Michigan Health System, Ann Arbor, Michigan, USA
| | - Umar F Bhatti
- Department of Surgery, University of Michigan Health System, Ann Arbor, Michigan, USA
| | - Qiufang Deng
- Department of Surgery, University of Michigan Health System, Ann Arbor, Michigan, USA
| | - Ben E Biesterveld
- Department of Surgery, University of Michigan Health System, Ann Arbor, Michigan, USA
| | - Yuzi Tian
- Department of Surgery, University of Michigan Health System, Ann Arbor, Michigan, USA
| | - Zhenyu Wu
- Department of Surgery, University of Michigan Health System, Ann Arbor, Michigan, USA
| | - Julia Dahl
- Department of Pathology, University of Michigan, Ann Arbor, Michigan, USA
| | - Baoling Liu
- Department of Surgery, University of Michigan Health System, Ann Arbor, Michigan, USA
| | - Jie Xu
- Department of Surgery, University of Michigan Health System, Ann Arbor, Michigan, USA
| | - Yui Koike
- Department of Surgery, University of Michigan Health System, Ann Arbor, Michigan, USA
| | - Jun Song
- Department of Surgery, University of Michigan Health System, Ann Arbor, Michigan, USA
| | - Jifeng Zhang
- Department of Surgery, University of Michigan Health System, Ann Arbor, Michigan, USA
| | - Yongqing Li
- Department of Surgery, University of Michigan Health System, Ann Arbor, Michigan, USA
| | - Hasan B Alam
- Department of Surgery, University of Michigan Health System, Ann Arbor, Michigan, USA
| | - Aaron M Williams
- Department of Surgery, University of Michigan Health System, Ann Arbor, Michigan, USA
| |
Collapse
|
12
|
O'Connor C, Wallace-Povirk A, Ning C, Frühauf J, Tong N, Gangjee A, Matherly LH, Hou Z. Folate transporter dynamics and therapy with classic and tumor-targeted antifolates. Sci Rep 2021; 11:6389. [PMID: 33737637 PMCID: PMC7973545 DOI: 10.1038/s41598-021-85818-x] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2020] [Accepted: 03/05/2021] [Indexed: 01/03/2023] Open
Abstract
There are three major folate uptake systems in human tissues and tumors, including the reduced folate carrier (RFC), folate receptors (FRs) and proton-coupled folate transporter (PCFT). We studied the functional interrelationships among these systems for the novel tumor-targeted antifolates AGF94 (transported by PCFT and FRs but not RFC) and AGF102 (selective for FRs) versus the classic antifolates pemetrexed, methotrexate and PT523 (variously transported by FRs, PCFT and RFC). We engineered HeLa cell models to express FRα or RFC under control of a tetracycline-inducible promoter with or without constitutive PCFT. We showed that cellular accumulations of extracellular folates were determined by the type and levels of the major folate transporters, with PCFT and RFC prevailing over FRα, depending on expression levels and pH. Based on patterns of cell proliferation in the presence of the inhibitors, we established transport redundancy for RFC and PCFT in pemetrexed uptake, and for PCFT and FRα in AGF94 uptake; uptake by PCFT predominated for pemetrexed and FRα for AGF94. For methotrexate and PT523, uptake by RFC predominated even in the presence of PCFT or FRα. For both classic (methotrexate, PT523) and FRα-targeted (AGF102) antifolates, anti-proliferative activities were antagonized by PCFT, likely due to its robust activity in mediating folate accumulation. Collectively, our findings describe a previously unrecognized interplay among the major folate transport systems that depends on transporter levels and extracellular pH, and that determines their contributions to the uptake and anti-tumor efficacies of targeted and untargeted antifolates.
Collapse
Affiliation(s)
- Carrie O'Connor
- Departments of Oncology, Wayne State University School of Medicine, 421 E. Canfield, Detroit, MI, 48201, USA
| | - Adrianne Wallace-Povirk
- Departments of Oncology, Wayne State University School of Medicine, 421 E. Canfield, Detroit, MI, 48201, USA
| | - Changwen Ning
- Departments of Oncology, Wayne State University School of Medicine, 421 E. Canfield, Detroit, MI, 48201, USA
| | - Josephine Frühauf
- Departments of Oncology, Wayne State University School of Medicine, 421 E. Canfield, Detroit, MI, 48201, USA
| | - Nian Tong
- Division of Medicinal Chemistry, Duquesne University, Pittsburgh, PA, USA
| | - Aleem Gangjee
- Division of Medicinal Chemistry, Duquesne University, Pittsburgh, PA, USA
| | - Larry H Matherly
- Departments of Oncology, Wayne State University School of Medicine, 421 E. Canfield, Detroit, MI, 48201, USA.
- Department of Pharmacology, Wayne State University School of Medicine, Detroit, MI, USA.
- Molecular Therapeutics Program, Barbara Ann Karmanos Cancer Institute, Detroit, MI, USA.
| | - Zhanjun Hou
- Departments of Oncology, Wayne State University School of Medicine, 421 E. Canfield, Detroit, MI, 48201, USA.
- Molecular Therapeutics Program, Barbara Ann Karmanos Cancer Institute, Detroit, MI, USA.
| |
Collapse
|
13
|
Sodré FMC, Bissenova S, Bruggeman Y, Tilvawala R, Cook DP, Berthault C, Mondal S, Callebaut A, You S, Scharfmann R, Mallone R, Thompson PR, Mathieu C, Buitinga M, Overbergh L. Peptidylarginine Deiminase Inhibition Prevents Diabetes Development in NOD Mice. Diabetes 2021; 70:516-528. [PMID: 33203696 PMCID: PMC7881854 DOI: 10.2337/db20-0421] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/23/2020] [Accepted: 11/11/2020] [Indexed: 12/12/2022]
Abstract
Protein citrullination plays a role in several autoimmune diseases. Its involvement in murine and human type 1 diabetes has recently been recognized through the discovery of antibodies and T-cell reactivity against citrullinated peptides. In the current study, we demonstrate that systemic inhibition of peptidylarginine deiminases (PADs), the enzymes mediating citrullination, through BB-Cl-amidine treatment, prevents diabetes development in NOD mice. This prevention was associated with reduced levels of citrullination in the pancreas, decreased circulating autoantibody titers against citrullinated glucose-regulated protein 78, and reduced spontaneous neutrophil extracellular trap formation of bone marrow-derived neutrophils. Moreover, BB-Cl-amidine treatment induced a shift from Th1 to Th2 cytokines in the serum and an increase in the frequency of regulatory T cells in the blood and spleen. In the pancreas, BB-Cl-amidine treatment preserved insulin production and was associated with a less destructive immune infiltrate characterized by reduced frequencies of effector memory CD4+ T cells and a modest reduction in the frequency of interferon-γ-producing CD4+ and CD8+ T cells. Our results point to a role of citrullination in the pathogenesis of autoimmune diabetes, with PAD inhibition leading to disease prevention through modulation of immune pathways. These findings provide insight in the potential of PAD inhibition for treating autoimmune diseases like type 1 diabetes.
Collapse
Affiliation(s)
- Fernanda M C Sodré
- Laboratory for Clinical and Experimental Endocrinology, KU Leuven, Leuven, Belgium
| | - Samal Bissenova
- Laboratory for Clinical and Experimental Endocrinology, KU Leuven, Leuven, Belgium
| | - Ylke Bruggeman
- Laboratory for Clinical and Experimental Endocrinology, KU Leuven, Leuven, Belgium
| | - Ronak Tilvawala
- Biochemistry and Molecular Pharmacology, University of Massachusetts Medical School, Worcester, MA
- Department of Molecular Biosciences, The University of Kansas, Lawrence, KS
| | - Dana P Cook
- Laboratory for Clinical and Experimental Endocrinology, KU Leuven, Leuven, Belgium
| | - Claire Berthault
- Université de Paris, Institut Cochin, CNRS, INSERM, Paris, France
| | - Santanu Mondal
- Biochemistry and Molecular Pharmacology, University of Massachusetts Medical School, Worcester, MA
| | - Aïsha Callebaut
- Laboratory for Clinical and Experimental Endocrinology, KU Leuven, Leuven, Belgium
| | - Sylvaine You
- Université de Paris, Institut Cochin, CNRS, INSERM, Paris, France
| | | | - Roberto Mallone
- Université de Paris, Institut Cochin, CNRS, INSERM, Paris, France
- Assistance Publique Hôpitaux de Paris, Hôpitaux Universitaires de Paris Centre-Université de Paris, Cochin Hospital, Service de Diabétologie et Immunologie Clinique, Paris, France
| | - Paul R Thompson
- Biochemistry and Molecular Pharmacology, University of Massachusetts Medical School, Worcester, MA
| | - Chantal Mathieu
- Laboratory for Clinical and Experimental Endocrinology, KU Leuven, Leuven, Belgium
| | - Mijke Buitinga
- Laboratory for Clinical and Experimental Endocrinology, KU Leuven, Leuven, Belgium
| | - Lut Overbergh
- Laboratory for Clinical and Experimental Endocrinology, KU Leuven, Leuven, Belgium
| |
Collapse
|
14
|
Maronek M, Gromova B, Liptak R, Konecna B, Pastorek M, Cechova B, Harsanyova M, Budis J, Smolak D, Radvanszky J, Szemes T, Harsanyiova J, Kralova Trancikova A, Gardlik R. Extracellular DNA Correlates with Intestinal Inflammation in Chemically Induced Colitis in Mice. Cells 2021; 10:E81. [PMID: 33418977 PMCID: PMC7825321 DOI: 10.3390/cells10010081] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2020] [Revised: 12/25/2020] [Accepted: 12/31/2020] [Indexed: 12/12/2022] Open
Abstract
Circulating extracellular DNA (ecDNA) is known to worsen the outcome of many diseases. ecDNA released from neutrophils during infection or inflammation is present in the form of neutrophil extracellular traps (NETs). It has been shown that higher ecDNA concentration occurs in a number of inflammatory diseases including inflammatory bowel disease (IBD). Enzymes such as peptidyl arginine deiminases (PADs) are crucial for NET formation. We sought to describe the dynamics of ecDNA concentrations and fragmentation, along with NETosis during a mouse model of chemically induced colitis. Plasma ecDNA concentration was highest on day seven of dextran sulfate sodium (DSS) intake and the increase was time-dependent. This increase correlated with the percentage of cells undergoing NETosis and other markers of disease activity. Relative proportion of nuclear ecDNA increased towards more severe colitis; however, absolute amount decreased. In colon explant medium, the highest concentration of ecDNA was on day three of DSS consumption. Early administration of PAD4 inhibitors did not alleviate disease activity, but lowered the ecDNA concentration. These results uncover the biological characteristics of ecDNA in IBD and support the role of ecDNA in intestinal inflammation. The therapeutic intervention aimed at NETs and/or nuclear ecDNA has yet to be fully investigated.
Collapse
Affiliation(s)
- Martin Maronek
- Institute of Molecular Biomedicine, Faculty of Medicine, Comenius University in Bratislava, 81108 Bratislava, Slovakia; (M.M.); (B.G.); (B.K.); (M.P.)
| | - Barbora Gromova
- Institute of Molecular Biomedicine, Faculty of Medicine, Comenius University in Bratislava, 81108 Bratislava, Slovakia; (M.M.); (B.G.); (B.K.); (M.P.)
| | - Robert Liptak
- Institute of Physiology, Faculty of Medicine, Comenius University in Bratislava, 81372 Bratislava, Slovakia;
| | - Barbora Konecna
- Institute of Molecular Biomedicine, Faculty of Medicine, Comenius University in Bratislava, 81108 Bratislava, Slovakia; (M.M.); (B.G.); (B.K.); (M.P.)
| | - Michal Pastorek
- Institute of Molecular Biomedicine, Faculty of Medicine, Comenius University in Bratislava, 81108 Bratislava, Slovakia; (M.M.); (B.G.); (B.K.); (M.P.)
| | - Barbora Cechova
- Department of Physiology, Third Faculty of Medicine, Charles University, 10000 Prague, Czech Republic;
| | - Maria Harsanyova
- Department of Molecular Biology, Faculty of Natural Sciences, Comenius University in Bratislava, 84215 Bratislava, Slovakia; (M.H.); (D.S.); (T.S.)
- Geneton Ltd., 84104 Bratislava, Slovakia; (J.B.); (J.R.)
| | - Jaroslav Budis
- Geneton Ltd., 84104 Bratislava, Slovakia; (J.B.); (J.R.)
- Comenius University Science Park, Univerzita Komenského, 84104 Bratislava, Slovakia
- Slovak Centre of Scientific and Technical Information, 81104 Bratislava, Slovakia
| | - David Smolak
- Department of Molecular Biology, Faculty of Natural Sciences, Comenius University in Bratislava, 84215 Bratislava, Slovakia; (M.H.); (D.S.); (T.S.)
- Geneton Ltd., 84104 Bratislava, Slovakia; (J.B.); (J.R.)
| | - Jan Radvanszky
- Geneton Ltd., 84104 Bratislava, Slovakia; (J.B.); (J.R.)
- Comenius University Science Park, Univerzita Komenského, 84104 Bratislava, Slovakia
- Institute of Clinical and Translational Research, Biomedical Research Center, Slovak Academy of Sciences, 84505 Bratislava, Slovakia
| | - Tomas Szemes
- Department of Molecular Biology, Faculty of Natural Sciences, Comenius University in Bratislava, 84215 Bratislava, Slovakia; (M.H.); (D.S.); (T.S.)
- Geneton Ltd., 84104 Bratislava, Slovakia; (J.B.); (J.R.)
- Comenius University Science Park, Univerzita Komenského, 84104 Bratislava, Slovakia
| | - Jana Harsanyiova
- Department of Pathophysiology, Jessenius Faculty of Medicine, Comenius University in Bratislava, 03601 Martin, Slovakia;
| | - Alzbeta Kralova Trancikova
- Biomedical Center Martin, Jessenius Faculty of Medicine, Comenius University in Bratislava, 03601 Martin, Slovakia;
| | - Roman Gardlik
- Institute of Molecular Biomedicine, Faculty of Medicine, Comenius University in Bratislava, 81108 Bratislava, Slovakia; (M.M.); (B.G.); (B.K.); (M.P.)
| |
Collapse
|
15
|
Luo S, Surapaneni A, Zheng Z, Rhee EP, Coresh J, Hung AM, Nadkarni GN, Yu B, Boerwinkle E, Tin A, Arking DE, Steinbrenner I, Schlosser P, Köttgen A, Grams ME. NAT8 Variants, N-Acetylated Amino Acids, and Progression of CKD. Clin J Am Soc Nephrol 2020; 16:37-47. [PMID: 33380473 PMCID: PMC7792648 DOI: 10.2215/cjn.08600520] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2020] [Accepted: 11/04/2020] [Indexed: 02/04/2023]
Abstract
BACKGROUND AND OBJECTIVES Genetic variants in NAT8, a liver- and kidney-specific acetyltransferase encoding gene, have been associated with eGFR and CKD in European populations. Higher circulating levels of two NAT8-associated metabolites, N-δ-acetylornithine and N-acetyl-1-methylhistidine, have been linked to lower eGFR and higher risk of incident CKD in the Black population. We aimed to expand upon prior studies to investigate associations between rs13538, a missense variant in NAT8, N-acetylated amino acids, and kidney failure in multiple, well-characterized cohorts. DESIGN, SETTING, PARTICIPANTS, & MEASUREMENTS We conducted analyses among participants with genetic and/or serum metabolomic data in the African American Study of Kidney Disease and Hypertension (AASK; n=962), the Atherosclerosis Risk in Communities (ARIC) study (n=1050), and BioMe, an electronic health record-linked biorepository (n=680). Separately, we evaluated associations between rs13538, urinary N-acetylated amino acids, and kidney failure in participants in the German CKD (GCKD) study (n=1624). RESULTS Of 31 N-acetylated amino acids evaluated, the circulating and urinary levels of 14 were associated with rs13538 (P<0.05/31). Higher circulating levels of five of these N-acetylated amino acids, namely, N-δ-acetylornithine, N-acetyl-1-methylhistidine, N-acetyl-3-methylhistidine, N-acetylhistidine, and N2,N5-diacetylornithine, were associated with kidney failure, after adjustment for confounders and combining results in meta-analysis (combined hazard ratios per two-fold higher amino acid levels: 1.48, 1.44, 1.21, 1.65, and 1.41, respectively; 95% confidence intervals: 1.21 to 1.81, 1.22 to 1.70, 1.08 to 1.37, 1.29 to 2.10, and 1.17 to 1.71, respectively; all P values <0.05/14). None of the urinary levels of these N-acetylated amino acids were associated with kidney failure in the GCKD study. CONCLUSIONS We demonstrate significant associations between an NAT8 gene variant and 14 N-acetylated amino acids, five of which had circulation levels that were associated with kidney failure.
Collapse
Affiliation(s)
- Shengyuan Luo
- Department of Epidemiology, Johns Hopkins University Bloomberg School of Public Health, Baltimore, Maryland
- Welch Center for Prevention, Epidemiology, and Clinical Research, Johns Hopkins University, Baltimore, Maryland
| | - Aditya Surapaneni
- Department of Epidemiology, Johns Hopkins University Bloomberg School of Public Health, Baltimore, Maryland
- Welch Center for Prevention, Epidemiology, and Clinical Research, Johns Hopkins University, Baltimore, Maryland
| | - Zihe Zheng
- Department of Biostatistics, Epidemiology, and Informatics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania
| | - Eugene P. Rhee
- Division of Nephrology, Massachusetts General Hospital and Harvard Medical School, Boston, Massachusetts
| | - Josef Coresh
- Department of Epidemiology, Johns Hopkins University Bloomberg School of Public Health, Baltimore, Maryland
- Welch Center for Prevention, Epidemiology, and Clinical Research, Johns Hopkins University, Baltimore, Maryland
| | - Adriana M. Hung
- Geriatric Research Education Clinical Center, Veteran Administration Tennessee Valley Health Care System, Nashville, Tennessee
- Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee
| | - Girish N. Nadkarni
- The Charles Bronfman Institute for Personalized Medicine, Icahn School of Medicine at Mount Sinai, New York, New York
- BioMe Phenomics Center, Icahn School of Medicine at Mount Sinai, New York, New York
- Department of Medicine, Icahn School of Medicine at Mount Sinai, New York, New York
| | - Bing Yu
- Department of Epidemiology, Human Genetics and Environmental Sciences, University of Texas Health Sciences Center at Houston School of Public Health, Houston, Texas
| | - Eric Boerwinkle
- Department of Epidemiology, Human Genetics and Environmental Sciences, University of Texas Health Sciences Center at Houston School of Public Health, Houston, Texas
- Human Genome Sequencing Center, Baylor College of Medicine, Houston, Texas
| | - Adrienne Tin
- Department of Epidemiology, Johns Hopkins University Bloomberg School of Public Health, Baltimore, Maryland
- Welch Center for Prevention, Epidemiology, and Clinical Research, Johns Hopkins University, Baltimore, Maryland
| | - Dan E. Arking
- McKusick-Nathans Institute, Department of Genetic Medicine, Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - Inga Steinbrenner
- Institute of Genetic Epidemiology, Faculty of Medicine and Medical Center, University of Freiburg, Freiburg, Germany
| | - Pascal Schlosser
- Institute of Genetic Epidemiology, Faculty of Medicine and Medical Center, University of Freiburg, Freiburg, Germany
| | - Anna Köttgen
- Department of Epidemiology, Johns Hopkins University Bloomberg School of Public Health, Baltimore, Maryland
- Institute of Genetic Epidemiology, Faculty of Medicine and Medical Center, University of Freiburg, Freiburg, Germany
| | - Morgan E. Grams
- Department of Epidemiology, Johns Hopkins University Bloomberg School of Public Health, Baltimore, Maryland
- Welch Center for Prevention, Epidemiology, and Clinical Research, Johns Hopkins University, Baltimore, Maryland
- Division of Nephrology, Department of Medicine, Johns Hopkins University, Baltimore, Maryland
| |
Collapse
|
16
|
Mühle E, Abry C, Leclerc P, Goly GM, Criscuolo A, Busse HJ, Kämpfer P, Bernardet JF, Clermont D, Chesneau O. Flavobacterium bizetiae sp. nov., isolated from diseased freshwater fish in Canada at the end of the 1970s. Int J Syst Evol Microbiol 2020; 71. [PMID: 33253083 DOI: 10.1099/ijsem.0.004576] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Genome sequence analysis of two strains collected in Canada at the end of the 1970s and deposited in 1998 at the Collection de l'Institut Pasteur has led to the taxonomic description of a novel fish-associated species in the genus Flavobacterium. Both strains, CIP 105534T and CIP 105535, were yellow-pigmented, Gram-stain-negative, non-spore-forming rod-shaped bacteria that exhibited gliding motility. They grew aerobically in a temperature range from 5 to 30 °C with optimal growth at 25 °C on trypticase soy or Reasoner's 2A agar but they did not grow on marine agar. Their major fatty acid profiles were similar, consisting of iso-C15 : 0, C16 : 1 ω7c and/or iso-C15 : 0 2-OH (shown as summed feature 3), C16 : 0 3-OH, iso-C17 : 0 3-OH and C16 : 0. The major polyamine was sym-homospermidine. Phosphatidylethanolamine and, most notably, ornithine-containing lipid OL2 and unidentified aminophospholipid APL1 were major polar lipids. A yellow pigment spot was visible after chromatographic analysis. The predominant respiratory quinone was MK-6. The G+C content of the two genomes was 34 mol% and their size was around 5.8 Mb. Comparison of the 16S rRNA gene sequences with those of the closely related type strains showed high levels of relatedness with Flavobacterium collinsii and Flavobacterium pectinovorum. All average nucleotide identity (ANI) and digital DNA-DNA hybridization values estimated against publicly available Flavobacterium genome assemblies were lower than 90 and 30 %, respectively. Phylogenetic, phenotypic and chemotaxonomic data indicated that the two strains represent a novel species of the genus Flavobacterium, for which the name Flavobacterium bizetiae sp. nov. is proposed. The type strain is CIP 105534T (=LMG 1342T). The unique ability of F. bizetiae to use melibiose as a sole source of carbon could provide a simple phenotypic test to discriminate F. bizetiae from its closest relatives.
Collapse
Affiliation(s)
- Estelle Mühle
- Collection de l'Institut Pasteur (CIP), Département de Microbiologie, Institut Pasteur, 28 rue du docteur Roux, 75015 Paris, France
| | - Chloé Abry
- Collection de l'Institut Pasteur (CIP), Département de Microbiologie, Institut Pasteur, 28 rue du docteur Roux, 75015 Paris, France
| | - Priscilla Leclerc
- Collection de l'Institut Pasteur (CIP), Département de Microbiologie, Institut Pasteur, 28 rue du docteur Roux, 75015 Paris, France
| | - Gogoa-Marthe Goly
- Collection de l'Institut Pasteur (CIP), Département de Microbiologie, Institut Pasteur, 28 rue du docteur Roux, 75015 Paris, France
| | - Alexis Criscuolo
- Hub de Bioinformatique et Biostatistique, Département de Biologie Computationnelle, Institut Pasteur, USR 3756 CNRS, 28 rue du docteur Roux, 75015 Paris, France
| | - Hans-Jürgen Busse
- Institut für Mikrobiologie, Veterinärmedizinische Universität Wien, Veterinärplatz 1, 1210 Wien, Austria
| | - Peter Kämpfer
- Institut für Angewandte Mikrobiologie, Justus-Liebig Universität Giessen, Heinrich-Buff-Ring 26 (IFZ), 35392 Giessen, Germany
| | - Jean-François Bernardet
- Unité de Virologie et Immunologie Moléculaires, Institut National de Recherche en Agriculture, Alimentation et Environnement (INRAE), 4 avenue Jean Jaurès, 78350 Jouy-en-Josas, France
| | - Dominique Clermont
- Collection de l'Institut Pasteur (CIP), Département de Microbiologie, Institut Pasteur, 28 rue du docteur Roux, 75015 Paris, France
| | - Olivier Chesneau
- Collection de l'Institut Pasteur (CIP), Département de Microbiologie, Institut Pasteur, 28 rue du docteur Roux, 75015 Paris, France
| |
Collapse
|
17
|
Kim Y, Keogh JB, Deo P, Clifton PM. Differential Effects of Dietary Patterns on Advanced Glycation end Products: A Randomized Crossover Study. Nutrients 2020; 12:nu12061767. [PMID: 32545555 PMCID: PMC7353357 DOI: 10.3390/nu12061767] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2020] [Revised: 06/02/2020] [Accepted: 06/08/2020] [Indexed: 12/14/2022] Open
Abstract
Dietary advanced glycation end products (AGEs) are believed to contribute to pathogenesis of diabetes and cardiovascular disease. The objective of this study was to determine if a diet high in red and processed meat and refined grains (HMD) would elevate plasma concentrations of protein-bound AGEs compared with an energy-matched diet high in whole grain, dairy, nuts and legumes (HWD). We conducted a randomized crossover trial with two 4-week weight-stable dietary interventions in 51 participants without type 2 diabetes (15 men and 36 women aged 35.1 ± 15.6 y; body mass index (BMI), 27.7 ± 6.9 kg/m2). Plasma concentrations of protein-bound Nε-(carboxymethyl) lysine (CML), Nε-(1-carboxyethyl) lysine (CEL) and Nδ-(5-hydro-5-methyl-4-imidazolon-2-yl)-ornithine (MG-H1) were measured by liquid chromatography–tandem mass spectrometry (LC-MS/MS). The HMD significantly increased plasma concentrations (nmol/mL) of CEL (1.367, 0.78 vs. 1.096, 0.65; p < 0.01; n = 48) compared with the HWD. No differences in CML and MG-H1 between HMD and HWD were observed. HMD increased plasma CEL concentrations compared with HWD in individuals without type 2 diabetes.
Collapse
Affiliation(s)
- Yoona Kim
- Department of Food and Nutrition, Institute of Agriculture and Life Science, Gyeongsang National University, Jinju 52828, Korea;
| | - Jennifer B. Keogh
- Health and Biomedical Innovation, Clinical and Health Sciences, University of South Australia, Adelaide SA 5000, Australia; (J.B.K.); (P.D.)
| | - Permal Deo
- Health and Biomedical Innovation, Clinical and Health Sciences, University of South Australia, Adelaide SA 5000, Australia; (J.B.K.); (P.D.)
| | - Peter M. Clifton
- Health and Biomedical Innovation, Clinical and Health Sciences, University of South Australia, Adelaide SA 5000, Australia; (J.B.K.); (P.D.)
- Correspondence: ; Tel.: +61-8-8302-1357
| |
Collapse
|
18
|
Kulichevskaya IS, Naumoff DG, Miroshnikov KK, Ivanova AA, Philippov DA, Hakobyan A, Rijpstra WIC, Damsté JSS, Liesack W, Dedysh SN. Limnoglobus roseus gen. nov., sp. nov., a novel freshwater planctomycete with a giant genome from the family Gemmataceae. Int J Syst Evol Microbiol 2020; 70:1240-1249. [PMID: 31800383 PMCID: PMC7397252 DOI: 10.1099/ijsem.0.003904] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2019] [Accepted: 11/16/2019] [Indexed: 11/18/2022] Open
Abstract
The family Gemmataceae accommodates aerobic, chemoorganotrophic planctomycetes, which inhabit various freshwater ecosystems, wetlands and soils. Here, we describe a novel member of this family, strain PX52T, which was isolated from a boreal eutrophic lake in Northern Russia. This isolate formed pink-pigmented colonies and was represented by spherical cells that occurred singly, in pairs or aggregates and multiplied by budding. Daughter cells were highly motile. PX52T was an obligate aerobic chemoorganotroph, which utilized various sugars and some heteropolysaccharides. Growth occurred at pH 5.0-7.5 (optimum pH 6.5) and at temperatures between 10 and 30 °C (optimum 20-25 °C). The major fatty acids were C18 : 1ɷ7c, C18 : 0 and βOH-C16:0; the major intact polar lipid was trimethylornithine, and the quinone was MK-6. The complete genome of PX52T was 9.38 Mb in size and contained nearly 8000 potential protein-coding genes. Among those were genes encoding a wide repertoire of carbohydrate-active enzymes (CAZymes) including 33 glycoside hydrolases (GH) and 87 glycosyltransferases (GT) affiliated with 17 and 12 CAZy families, respectively. DNA G+C content was 65.6 mol%. PX52T displayed only 86.0-89.8 % 16S rRNA gene sequence similarity to taxonomically described Gemmataceae planctomycetes and differed from them by a number of phenotypic characteristics and by fatty acid composition. We, therefore, propose to classify it as representing a novel genus and species, Limnoglobus roseus gen. nov., sp. nov. The type strain is strain PX52T (=KCTC 72397T=VKM B-3275T).
Collapse
Affiliation(s)
- Irina S. Kulichevskaya
- Winogradsky Institute of Microbiology, Research Center of Biotechnology of the Russian Academy of Sciences, Moscow 119071, Russia
| | - Daniil G. Naumoff
- Winogradsky Institute of Microbiology, Research Center of Biotechnology of the Russian Academy of Sciences, Moscow 119071, Russia
| | - Kirill K. Miroshnikov
- Winogradsky Institute of Microbiology, Research Center of Biotechnology of the Russian Academy of Sciences, Moscow 119071, Russia
| | - Anastasia A. Ivanova
- Winogradsky Institute of Microbiology, Research Center of Biotechnology of the Russian Academy of Sciences, Moscow 119071, Russia
| | - Dmitriy A. Philippov
- Papanin Institute for Biology of Inland Waters, Russian Academy of Sciences, Borok 152742, Russia
| | - Anna Hakobyan
- Max-Planck-Institut für terrestrische Mikrobiologie, D-35043 Marburg, Germany
| | - W. Irene C. Rijpstra
- NIOZ Royal Netherlands Institute for Sea Research, Department of Marine Microbiology and Biogeochemistry, and Utrecht University, PO Box 59, 1790 AB Den Burg, The Netherlands
- Utrecht University, Faculty of Geosciences, Department of Earth Sciences, Geochemistry, Utrecht, The Netherlands
| | - Jaap S. Sinninghe Damsté
- NIOZ Royal Netherlands Institute for Sea Research, Department of Marine Microbiology and Biogeochemistry, and Utrecht University, PO Box 59, 1790 AB Den Burg, The Netherlands
- Utrecht University, Faculty of Geosciences, Department of Earth Sciences, Geochemistry, Utrecht, The Netherlands
| | - Werner Liesack
- Max-Planck-Institut für terrestrische Mikrobiologie, D-35043 Marburg, Germany
| | - Svetlana N. Dedysh
- Winogradsky Institute of Microbiology, Research Center of Biotechnology of the Russian Academy of Sciences, Moscow 119071, Russia
| |
Collapse
|
19
|
Ebner J, Cagalinec M, Kubista H, Todt H, Szabo PL, Kiss A, Podesser BK, Cserne Szappanos H, Hool LC, Hilber K, Koenig X. Neuronal nitric oxide synthase regulation of calcium cycling in ventricular cardiomyocytes is independent of Ca v1.2 channel modulation under basal conditions. Pflugers Arch 2020; 472:61-74. [PMID: 31822999 PMCID: PMC6960210 DOI: 10.1007/s00424-019-02335-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2019] [Revised: 11/19/2019] [Accepted: 11/21/2019] [Indexed: 11/25/2022]
Abstract
Neuronal nitric oxide synthase (nNOS) is considered a regulator of Cav1.2 L-type Ca2+ channels and downstream Ca2+ cycling in the heart. The commonest view is that nitric oxide (NO), generated by nNOS activity in cardiomyocytes, reduces the currents through Cav1.2 channels. This gives rise to a diminished Ca2+ release from the sarcoplasmic reticulum, and finally reduced contractility. Here, we report that nNOS inhibitor substances significantly increase intracellular Ca2+ transients in ventricular cardiomyocytes derived from adult mouse and rat hearts. This is consistent with an inhibitory effect of nNOS/NO activity on Ca2+ cycling and contractility. Whole cell currents through L-type Ca2+ channels in rodent myocytes, on the other hand, were not substantially affected by the application of various NOS inhibitors, or application of a NO donor substance. Moreover, the presence of NO donors had no effect on the single-channel open probability of purified human Cav1.2 channel protein reconstituted in artificial liposomes. These results indicate that nNOS/NO activity does not directly modify Cav1.2 channel function. We conclude that-against the currently prevailing view-basal Cav1.2 channel activity in ventricular cardiomyocytes is not substantially regulated by nNOS activity and NO. Hence, nNOS/NO inhibition of Ca2+ cycling and contractility occurs independently of direct regulation of Cav1.2 channels by NO.
Collapse
Affiliation(s)
- Janine Ebner
- Department of Neurophysiology and-Pharmacology, Center for Physiology and Pharmacology, Medical University of Vienna, Schwarzspanierstraße 17, 1090, Vienna, Austria
| | - Michal Cagalinec
- Department of Cellular Cardiology, Institute of Experimental Endocrinology, Biomedical Research Center, University Science Park for Biomedicine, Slovak Academy of Sciences, Bratislava, Slovakia
- Institute of Molecular Physiology and Genetics, Centre of Biosciences, Slovak Academy of Sciences, Bratislava, Slovakia
| | - Helmut Kubista
- Department of Neurophysiology and-Pharmacology, Center for Physiology and Pharmacology, Medical University of Vienna, Schwarzspanierstraße 17, 1090, Vienna, Austria
| | - Hannes Todt
- Department of Neurophysiology and-Pharmacology, Center for Physiology and Pharmacology, Medical University of Vienna, Schwarzspanierstraße 17, 1090, Vienna, Austria
| | - Petra L Szabo
- Ludwig Boltzmann Cluster for Cardiovascular Research at the Center for Biomedical Research, Medical University of Vienna, Vienna, Austria
| | - Attila Kiss
- Ludwig Boltzmann Cluster for Cardiovascular Research at the Center for Biomedical Research, Medical University of Vienna, Vienna, Austria
| | - Bruno K Podesser
- Ludwig Boltzmann Cluster for Cardiovascular Research at the Center for Biomedical Research, Medical University of Vienna, Vienna, Austria
| | | | - Livia C Hool
- School of Human Sciences, The University of Western Australia, Crawley, WA, 6009, Australia
- Victor Chang Cardiac Research Institute, Darlinghurst, NSW, 2010, Australia
| | - Karlheinz Hilber
- Department of Neurophysiology and-Pharmacology, Center for Physiology and Pharmacology, Medical University of Vienna, Schwarzspanierstraße 17, 1090, Vienna, Austria.
| | - Xaver Koenig
- Department of Neurophysiology and-Pharmacology, Center for Physiology and Pharmacology, Medical University of Vienna, Schwarzspanierstraße 17, 1090, Vienna, Austria
| |
Collapse
|
20
|
Bastian C, Day J, Politano S, Quinn J, Brunet S, Baltan S. Preserving Mitochondrial Structure and Motility Promotes Recovery of White Matter After Ischemia. Neuromolecular Med 2019; 21:484-492. [PMID: 31152363 PMCID: PMC6884671 DOI: 10.1007/s12017-019-08550-w] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2019] [Accepted: 05/20/2019] [Indexed: 12/23/2022]
Abstract
Stroke significantly affects white matter in the brain by impairing axon function, which results in clinical deficits. Axonal mitochondria are highly dynamic and are transported via microtubules in the anterograde or retrograde direction, depending upon axonal energy demands. Recently, we reported that mitochondrial division inhibitor 1 (Mdivi-1) promotes axon function recovery by preventing mitochondrial fission only when applied during ischemia. Application of Mdivi-1 after injury failed to protect axon function. Interestingly, L-NIO, which is a NOS3 inhibitor, confers post-ischemic protection to axon function by attenuating mitochondrial fission and preserving mitochondrial motility via conserving levels of the microtubular adaptor protein Miro-2. We propose that preventing mitochondrial fission protects axon function during injury, but that restoration of mitochondrial motility is more important to promote axon function recovery after injury. Thus, Miro-2 may be a therapeutic molecular target for recovery following a stroke.
Collapse
Affiliation(s)
- Chinthasagar Bastian
- Department of Neurosciences, Lerner Research Institute, Cleveland Clinic Foundation, 9500 Euclid Avenue/NC30, Cleveland, OH, 44195, USA
| | - Jerica Day
- Department of Neurosciences, Lerner Research Institute, Cleveland Clinic Foundation, 9500 Euclid Avenue/NC30, Cleveland, OH, 44195, USA
| | - Stephen Politano
- Department of Neurosciences, Lerner Research Institute, Cleveland Clinic Foundation, 9500 Euclid Avenue/NC30, Cleveland, OH, 44195, USA
| | - John Quinn
- Department of Neurosciences, Lerner Research Institute, Cleveland Clinic Foundation, 9500 Euclid Avenue/NC30, Cleveland, OH, 44195, USA
| | - Sylvain Brunet
- Department of Neurosciences, Lerner Research Institute, Cleveland Clinic Foundation, 9500 Euclid Avenue/NC30, Cleveland, OH, 44195, USA
| | - Selva Baltan
- Department of Neurosciences, Lerner Research Institute, Cleveland Clinic Foundation, 9500 Euclid Avenue/NC30, Cleveland, OH, 44195, USA.
| |
Collapse
|
21
|
Zacharias HD, Zacharias AP, Gluud LL, Morgan MY. Pharmacotherapies that specifically target ammonia for the prevention and treatment of hepatic encephalopathy in adults with cirrhosis. Cochrane Database Syst Rev 2019; 6:CD012334. [PMID: 31204790 PMCID: PMC6572872 DOI: 10.1002/14651858.cd012334.pub2] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
BACKGROUND Hepatic encephalopathy is a common complication of cirrhosis, with high related morbidity and mortality. Its presence is associated with a wide spectrum of change ranging from clinically obvious neuropsychiatric features, known as 'overt' hepatic encephalopathy, to abnormalities manifest only on psychometric or electrophysiological testing, 'minimal' hepatic encephalopathy. The exact pathogenesis of the syndrome is unknown but ammonia plays a key role. Drugs that specifically target ammonia include sodium benzoate, glycerol phenylbutyrate, ornithine phenylacetate, AST-120 (spherical carbon adsorbent), and polyethylene glycol. OBJECTIVES To evaluate the beneficial and harmful effects of pharmacotherapies that specifically target ammonia versus placebo, no intervention, or other active interventions, for the prevention and treatment of hepatic encephalopathy in people with cirrhosis. SEARCH METHODS We searched the Cochrane Hepato-Biliary Controlled Trials Register, CENTRAL, MEDLINE, Embase, and three other databases to March 2019. We also searched online trials registries such as ClinicalTrials.gov, European Medicines Agency, WHO International Clinical Trial Registry Platform, and the Food and Drug Administration for ongoing or unpublished trials. In addition, we searched conference proceedings, checked bibliographies, and corresponded with investigators. SELECTION CRITERIA We included randomised clinical trials comparing sodium benzoate, glycerol phenylbutyrate, ornithine phenylacetate, AST-120, and polyethylene glycol versus placebo or non-absorbable disaccharides, irrespective of blinding, language, or publication status. We included participants with minimal or overt hepatic encephalopathy or participants who were at risk of developing hepatic encephalopathy. DATA COLLECTION AND ANALYSIS Two review authors independently extracted data from the included reports. The primary outcomes were mortality, hepatic encephalopathy, and serious adverse events. We undertook meta-analyses and presented results using risk ratios (RR) or mean differences (MD), both with 95% confidence intervals (CIs), and I2 statistic values as a marker of heterogeneity. We assessed bias control using the Cochrane Hepato-Biliary domains and the certainty of the evidence using GRADE. MAIN RESULTS We identified 11 randomised clinical trials that fulfilled our inclusion criteria. Two trials evaluated the prevention of hepatic encephalopathy while nine evaluated the treatment of hepatic encephalopathy. The trials assessed sodium benzoate (three trials), glycerol phenylbutyrate (one trial), ornithine phenylacetate (two trials), AST-120 (two trials), and polyethylene glycol (three trials). Overall, 499 participants received these pharmacotherapies while 444 participants received a placebo preparation or a non-absorbable disaccharide. We classified eight of the 11 trials as at 'high risk of bias' and downgraded the certainty of the evidence to very low for all outcomes.Eleven trials, involving 943 participants, reported mortality data, although there were no events in five trials. Our analyses found no beneficial or harmful effects of sodium benzoate versus non-absorbable disaccharides (RR 1.26, 95% CI 0.49 to 3.28; 101 participants; 2 trials; I2 = 0%), glycerol phenylbutyrate versus placebo (RR 0.65, 95% CI 0.11 to 3.81; 178 participants; 1 trial), ornithine phenylacetate versus placebo (RR 0.73, 95% CI 0.35 to 1.51; 269 participants; 2 trials; I2 = 0%), AST-120 versus lactulose (RR 1.05, 95% CI 0.59 to 1.85; 41 participants; 1 trial), or polyethylene glycol versus lactulose (RR 0.50, 95% CI 0.09 to 2.64; 190 participants; 3 trials; I2 = 0%).Seven trials involving 521 participants reported data on hepatic encephalopathy. Our analyses showed a beneficial effect of glycerol phenylbutyrate versus placebo (RR 0.57, 95% CI 0.36 to 0.90; 178 participants; 1 trial; number needed to treat for an additional beneficial outcome (NNTB) 6), and of polyethylene glycol versus lactulose (RR 0.19, 95% CI 0.08 to 0.44; 190 participants; 3 trials; NNTB 4). We did not observe beneficial effects in the remaining three trials with extractable data: sodium benzoate versus non-absorbable disaccharides (RR 1.22, 95% CI 0.51 to 2.93; 74 participants; 1 trial); ornithine phenylacetate versus placebo (RR 2.71, 95% CI 0.12 to 62.70; 38 participants; 1 trial); or AST-120 versus lactulose (RR 1.05, 95% CI 0.59 to 1.85; 41 participants; 1 trial).Ten trials, involving 790 participants, reported a total of 130 serious adverse events. Our analyses found no evidence of beneficial or harmful effects of sodium benzoate versus non-absorbable disaccharides (RR 1.08, 95% CI 0.44 to 2.68; 101 participants; 2 trials), glycerol phenylbutyrate versus placebo (RR 1.63, 95% CI 0.85 to 3.13; 178 participants; 1 trial), ornithine phenylacetate versus placebo (RR 0.92, 95% CI 0.62 to 1.36; 264 participants; 2 trials; I2 = 0%), or polyethylene glycol versus lactulose (RR 0.57, 95% CI 0.18 to 1.82; 190 participants; 3 trials; I2 = 0%). Likewise, eight trials, involving 782 participants, reported a total of 374 non-serious adverse events and again our analyses found no beneficial or harmful effects of the pharmacotherapies under review when compared to placebo or to lactulose/lactitol.Nine trials, involving 733 participants, reported data on blood ammonia. We observed significant reductions in blood ammonia in placebo-controlled trials evaluating sodium benzoate (MD -32.00, 95% CI -46.85 to -17.15; 16 participants; 1 trial), glycerol phenylbutyrate (MD -12.00, 95% CI -23.37 to -0.63; 178 participants; 1 trial), ornithine phenylacetate (MD -27.10, 95% CI -48.55 to -5.65; 231 participants; 1 trial), and AST-120 (MD -22.00, 95% CI -26.75 to -17.25; 98 participants; 1 trial). However, there were no significant differences in blood ammonia concentrations in comparison with lactulose/lactitol with sodium benzoate (MD 9.00, 95% CI -1.10 to 19.11; 85 participants; 2 trials; I2 = 0%), AST-120 (MD 5.20, 95% CI -2.75 to 13.15; 35 participants; 1 trial), and polyethylene glycol (MD -29.28, 95% CI -95.96 to 37.39; 90 participants; 2 trials; I2 = 88%). FUNDING Five trials received support from pharmaceutical companies while four did not; two did not provide this information. AUTHORS' CONCLUSIONS There is insufficient evidence to determine the effects of these pharmacotherapies on the prevention and treatment of hepatic encephalopathy in adults with cirrhosis. They have the potential to reduce blood ammonia concentrations when compared to placebo, but their overall effects on clinical outcomes of interest and the potential harms associated with their use remain uncertain. Further evidence is needed to evaluate the potential beneficial and harmful effects of these pharmacotherapies in this clinical setting.
Collapse
Affiliation(s)
- Harry D Zacharias
- Division of Medicine, Royal Free Campus, University College LondonUCL Institute for Liver & Digestive HealthLondonUKNW3 2PF
| | - Antony P Zacharias
- Division of Medicine, Royal Free Campus, University College LondonUCL Institute for Liver & Digestive HealthLondonUKNW3 2PF
| | - Lise Lotte Gluud
- Copenhagen University Hospital HvidovreGastrounit, Medical DivisionKettegaards Alle 30HvidovreDenmark2650
| | - Marsha Y Morgan
- Division of Medicine, Royal Free Campus, University College LondonUCL Institute for Liver & Digestive HealthLondonUKNW3 2PF
| |
Collapse
|
22
|
Antognelli C, Moretti S, Frosini R, Puxeddu E, Sidoni A, Talesa VN. Methylglyoxal Acts as a Tumor-Promoting Factor in Anaplastic Thyroid Cancer. Cells 2019; 8:cells8060547. [PMID: 31174324 PMCID: PMC6627963 DOI: 10.3390/cells8060547] [Citation(s) in RCA: 40] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2019] [Revised: 06/03/2019] [Accepted: 06/03/2019] [Indexed: 02/06/2023] Open
Abstract
Methylglyoxal (MG) is a potent inducer of advanced glycation end products (AGEs). MG, long considered a highly cytotoxic molecule with potential anticancer value, is now being re-evaluated to a protumorigenic agent in some malignancies. Anaplastic thyroid cancer (ATC) is an extremely aggressive and highly lethal cancer for which conventional therapies have proved ineffective. Successful therapeutic intervention in ATC is undermined by our poor understanding of its molecular etiology. In the attempt to understand the role of MG in ATC aggressiveness, we used immunohistochemistry to examine the level of MG protein adducts in ATC and slow-growing papillary thyroid cancer (PTC). We detected a high level of MG adducts in ATC compared to PTC ones, suggesting a protumor role for MG-mediated dicarbonyl stress in ATC. Accordingly, MG adduct accumulation in ATC cells in vitro was associated with a marked mesenchymal phenotype and increased migration/invasion, which were both reversed by aminoguanidine (AG)—a scavenger of MG—and resveratrol—an activator of Glyoxalase 1 (Glo1), the key metabolizing enzyme of MG. Our study represents the first demonstration that MG, via AGEs, acts as a tumor-promoting factor in ATC and suggests that MG scavengers and/or Glo1 activators merit investigations as potential therapeutic strategies for this malignancy.
Collapse
Affiliation(s)
- Cinzia Antognelli
- Department of Experimental Medicine, University of Perugia, Piazza Lucio Severi 1, 06132 Perugia, Italy.
| | - Sonia Moretti
- Department of Medicine, University of Perugia, Piazza Lucio Severi 1, 06132 Perugia, Italy.
| | - Roberta Frosini
- Department of Experimental Medicine, University of Perugia, Piazza Lucio Severi 1, 06132 Perugia, Italy.
| | - Efisio Puxeddu
- Department of Medicine, University of Perugia, Piazza Lucio Severi 1, 06132 Perugia, Italy.
| | - Angelo Sidoni
- Department of Experimental Medicine, University of Perugia, Piazza Lucio Severi 1, 06132 Perugia, Italy.
| | - Vincenzo N Talesa
- Department of Experimental Medicine, University of Perugia, Piazza Lucio Severi 1, 06132 Perugia, Italy.
| |
Collapse
|
23
|
Napoli E, Schneider A, Wang JY, Trivedi A, Carrillo NR, Tassone F, Rogawski M, Hagerman RJ, Giulivi C. Allopregnanolone Treatment Improves Plasma Metabolomic Profile Associated with GABA Metabolism in Fragile X-Associated Tremor/Ataxia Syndrome: a Pilot Study. Mol Neurobiol 2019; 56:3702-3713. [PMID: 30187385 PMCID: PMC6401336 DOI: 10.1007/s12035-018-1330-3] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2018] [Accepted: 08/22/2018] [Indexed: 12/17/2022]
Abstract
Currently, there is no effective treatment for the fragile X-associated tremor/ataxia syndrome (FXTAS), a late-onset neurodegenerative disorder. In this pilot study, we evaluated whether allopregnanolone, a natural neurosteroid that exerts beneficial effects in neurodegenerative diseases, nervous system injury, and peripheral neuropathies, could improve lymphocytic bioenergetics and plasma pharmacometabolomics in six males with FXTAS (68 ± 3 years old; FMR1 CGG repeats 94 ± 4; FXTAS stages ranging from 3 to 5) enrolled in a 12-week open-label intervention study conducted at the University of California Davis from December 2015 through July 2016. Plasma pharmacometabolomics and lymphocytic mitochondria function were assessed at baseline (on the day of the first infusion) and at follow-up (within 48 h from the last infusion). In parallel, quantitative measurements of tremor and ataxia and neuropsychological evaluations of mental state, executive function, learning, memory, and psychological symptoms were assessed at the same time points. Allopregnanolone treatment impacted significantly GABA metabolism, oxidative stress, and some of the mitochondria-related outcomes. Notably, the magnitude of the individual metabolic response, as well as the correlation with some of the behavioral tests, was overwhelmingly carrier-specific. Based on this pilot study, allopregnanolone treatment has the potential for improving cognitive and GABA metabolism in FXTAS aligned with the concept of precision medicine.
Collapse
Affiliation(s)
- Eleonora Napoli
- Department of Molecular Biosciences, School of Veterinary Medicine, University of California Davis, Davis, CA, 95616, USA
| | - Andrea Schneider
- Department of Pediatrics, School of Medicine, University of California Davis, Sacramento, CA, USA
- UC Davis Health, UC Davis MIND Institute, Sacramento, CA, USA
| | - Jun Yi Wang
- UC Davis Health, UC Davis MIND Institute, Sacramento, CA, USA
- Department of Biochemistry and Molecular Medicine, School of Medicine, University of California Davis, Sacramento, CA, USA
| | - Aditi Trivedi
- School of Medicine, University of California Davis, Sacramento, CA, USA
| | - Nika Roa Carrillo
- School of Medicine, University of California Davis, Sacramento, CA, USA
| | - Flora Tassone
- UC Davis Health, UC Davis MIND Institute, Sacramento, CA, USA
- Department of Biochemistry and Molecular Medicine, School of Medicine, University of California Davis, Sacramento, CA, USA
| | - Michael Rogawski
- Department of Neurology, School of Medicine, University of California Davis, Sacramento, CA, USA
| | - Randi J Hagerman
- Department of Pediatrics, School of Medicine, University of California Davis, Sacramento, CA, USA
- UC Davis Health, UC Davis MIND Institute, Sacramento, CA, USA
| | - Cecilia Giulivi
- Department of Molecular Biosciences, School of Veterinary Medicine, University of California Davis, Davis, CA, 95616, USA.
- UC Davis Health, UC Davis MIND Institute, Sacramento, CA, USA.
| |
Collapse
|
24
|
Sudnitsyna MV, Gusev NB. Is the small heat shock protein HspB1 (Hsp27) a real and predominant target of methylglyoxal modification? Cell Stress Chaperones 2019; 24:419-426. [PMID: 30756294 PMCID: PMC6439031 DOI: 10.1007/s12192-019-00975-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2018] [Revised: 01/26/2019] [Accepted: 01/29/2019] [Indexed: 01/09/2023] Open
Abstract
This study analyzed the interaction of commercial monoclonal anti-methylglyoxal antibodies that predominantly recognize argpyrimidine with unmodified and modified model proteins and small heat shock proteins. These antibodies specifically recognize methylglyoxal (MG)-modified bovine serum albumin and lysozyme, but they react equally well with both unmodified and MG-modified HspB1. Mutation R188W decreased the interaction of these antibodies with unmodified HspB1, thus indicating that this residue participates in the formation of antigenic determinant. However, these antibodies did not recognize either short (ESRAQ) or long (IPVTFESRAQLGGP) peptides with primary structure identical to that at Arg188 of HspB1. Neither of the peptides obtained after the cleavage of HspB1 at Met or Cys residues were recognized by anti-argpyrimidine antibodies. This means that unmodified HspB1 contains a discontinuous epitope that includes the sequence around Arg188 and that this epitope is recognized by anti-argpyrimidine antibodies in unmodified HspB1. Incubation of HspB1 with MG is accompanied by the accumulation of hydroimidazolones, but not argpyrimidines. Therefore, conclusions based on utilization of anti-argpyrimidine antibodies and indicating that HspB1 is the predominant and preferential target of MG modification in the cell require revision.
Collapse
Affiliation(s)
- Maria V Sudnitsyna
- Department of Biochemistry, School of Biology, Moscow State University, Moscow, Russian Federation, 119991
| | - Nikolai B Gusev
- Department of Biochemistry, School of Biology, Moscow State University, Moscow, Russian Federation, 119991.
| |
Collapse
|
25
|
Zielonka M, Breuer M, Okun JG, Carl M, Hoffmann GF, Kölker S. Pharmacologic rescue of hyperammonemia-induced toxicity in zebrafish by inhibition of ornithine aminotransferase. PLoS One 2018; 13:e0203707. [PMID: 30199544 PMCID: PMC6130883 DOI: 10.1371/journal.pone.0203707] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2018] [Accepted: 08/24/2018] [Indexed: 12/30/2022] Open
Abstract
Hyperammonemia is the common biochemical hallmark of urea cycle disorders, activating neurotoxic pathways. If untreated, affected individuals have a high risk of irreversible brain damage and mortality. Here we show that acute hyperammonemia strongly enhances transamination-dependent formation of osmolytic glutamine and excitatory glutamate, thereby inducing neurotoxicity and death in ammoniotelic zebrafish larvae via synergistically acting overactivation of NMDA receptors and bioenergetic impairment induced by depletion of 2-oxoglutarate. Intriguingly, specific and irreversible inhibition of ornithine aminotransferase (OAT) by 5-fluoromethylornithine rescues zebrafish from lethal concentrations of ammonium acetate and corrects hyperammonemia-induced biochemical alterations. Thus, OAT inhibition is a promising and effective therapeutic approach for preventing neurotoxicity and mortality in acute hyperammonemia.
Collapse
Affiliation(s)
- Matthias Zielonka
- University Hospital Heidelberg, Center for Child and Adolescent Medicine, Division for Pediatric Neurology and Metabolic Medicine, Heidelberg, Germany
- Heidelberg Research Center for Molecular Medicine (HRCMM), Heidelberg, Germany
- * E-mail:
| | - Maximilian Breuer
- University Hospital Heidelberg, Center for Child and Adolescent Medicine, Division for Pediatric Neurology and Metabolic Medicine, Heidelberg, Germany
| | - Jürgen Günther Okun
- University Hospital Heidelberg, Center for Child and Adolescent Medicine, Division for Pediatric Neurology and Metabolic Medicine, Heidelberg, Germany
| | - Matthias Carl
- Heidelberg University, Medical Faculty Mannheim, Department of Cell and Molecular Biology, Mannheim, Germany
- University of Trento, Center for Integrative Biology (CIBIO), Laboratory of Translational Neurogenetics, Trento, Italy
| | - Georg Friedrich Hoffmann
- University Hospital Heidelberg, Center for Child and Adolescent Medicine, Division for Pediatric Neurology and Metabolic Medicine, Heidelberg, Germany
| | - Stefan Kölker
- University Hospital Heidelberg, Center for Child and Adolescent Medicine, Division for Pediatric Neurology and Metabolic Medicine, Heidelberg, Germany
| |
Collapse
|
26
|
Antognelli C, Mancuso F, Frosini R, Arato I, Calvitti M, Calafiore R, Talesa VN, Luca G. Testosterone and Follicle Stimulating Hormone-Dependent Glyoxalase 1 Up-Regulation Sustains the Viability of Porcine Sertoli Cells through the Control of Hydroimidazolone- and Argpyrimidine-Mediated NF-κB Pathway. Am J Pathol 2018; 188:2553-2563. [PMID: 30125541 DOI: 10.1016/j.ajpath.2018.07.013] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/21/2018] [Revised: 07/11/2018] [Accepted: 07/24/2018] [Indexed: 12/11/2022]
Abstract
Because Sertoli cells (SCs) play a central role in germ cell survival, their death may result in marked germ cell loss and infertility. SCs are the only somatic cells within the seminiferous tubules and are essential for regulating spermatogenesis. Factors that enhance or diminish the viability of SCs may have profound effects on spermatogenesis. Yet the mechanisms underlying the maintenance of SC viability remain largely unknown. Glyoxalase 1 (Glo1) detoxifies methylglyoxal (MG), a highly reactive carbonyl species mainly formed during glycolysis, which is a potent precursor of cytotoxic advanced glycation end products (AGEs). Hydroimidazolone (MG-H1) and argpyrimidine (ArgPyr) are AGEs resulting from MG-mediated post-translational modification of arginine residues in various proteins. The role of Glo1 and MG-derived AGEs in regulating the fate of SCs has never been investigated. By using gene silencing and the specific MG scavenger, aminoguanidine, the authors demonstrate that Glo1, under testosterone and follicle-stimulating hormone control, sustains viability of porcine neonatal SCs through a mechanism involving the NF-κB pathway. Glo1 knockdown induces a mitochondrial apoptotic pathway driven by the intracellular accumulation of MG-H1 and ArgPyr that desensitizes NF-κB signaling by modifying the inhibitor of NF-κB kinase, IKKß. This is the first report describing a role for Glo1 and MG-derived AGEs in SC biology, providing valuable new insights into the potential involvement of this metabolic axis into spermatogenesis.
Collapse
Affiliation(s)
- Cinzia Antognelli
- Department of Experimental Medicine, University of Perugia, Perugia, Italy.
| | - Francesca Mancuso
- Department of Experimental Medicine, University of Perugia, Perugia, Italy
| | - Roberta Frosini
- Department of Experimental Medicine, University of Perugia, Perugia, Italy
| | - Iva Arato
- Department of Experimental Medicine, University of Perugia, Perugia, Italy
| | - Mario Calvitti
- Department of Experimental Medicine, University of Perugia, Perugia, Italy
| | | | - Vincenzo N Talesa
- Department of Experimental Medicine, University of Perugia, Perugia, Italy
| | - Giovanni Luca
- Department of Experimental Medicine, University of Perugia, Perugia, Italy
| |
Collapse
|
27
|
Wu Q, Deering RW, Zhang G, Wang B, Li X, Sun J, Chen J, Zhang H, Rowley DC, Wang H. Albisporachelin, a New Hydroxamate Type Siderophore from the Deep Ocean Sediment-Derived Actinomycete Amycolatopsisalbispora WP1 T. Mar Drugs 2018; 16:md16060199. [PMID: 29875351 PMCID: PMC6024995 DOI: 10.3390/md16060199] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2018] [Revised: 06/04/2018] [Accepted: 06/05/2018] [Indexed: 12/04/2022] Open
Abstract
Marine actinobacteria continue to be a rich source for the discovery of structurally diverse secondary metabolites. Here we present a new hydroxymate siderophore produced by Amycolatopsis albispora, a recently described species of this less explored actinomycete genus. Strain WP1T was isolated from sediments collected at −2945 m in the Indian Ocean. The new siderophore, designated albisporachelin, was isolated from iron depleted culture broths and the structure was established by 1D and 2D NMR and MS/MS experiments, and application of a modified Marfey’s method. Albisporachelin is composed of one N-methylated-formylated/hydroxylated l-ornithine (N-Me-fh-l-Orn), one l-serine (l-Ser), one formylated/hydroxylated l-ornithine (fh-l-Orn) and a cyclo-N-methylated-hydroxylated l-ornithine (cyclo-N-Me-h-l-Orn).
Collapse
Affiliation(s)
- Qihao Wu
- College of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou 310014, China.
| | - Robert W Deering
- Department of Biomedical and Pharmaceutical Science, College of Pharmacy, University of Rhode Island, Kingston, RI 02881, USA.
| | - Gaiyun Zhang
- Key Laboratory of Marine Biogenetic Resources, Third Institute of Oceanography, State Oceanic Administration, Xiamen 361005, China.
| | - Bixia Wang
- College of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou 310014, China.
| | - Xin Li
- College of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou 310014, China.
| | - Jiadong Sun
- Department of Biomedical and Pharmaceutical Science, College of Pharmacy, University of Rhode Island, Kingston, RI 02881, USA.
| | - Jianwei Chen
- College of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou 310014, China.
| | - Huawei Zhang
- College of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou 310014, China.
| | - David C Rowley
- Department of Biomedical and Pharmaceutical Science, College of Pharmacy, University of Rhode Island, Kingston, RI 02881, USA.
| | - Hong Wang
- College of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou 310014, China.
| |
Collapse
|
28
|
Antognelli C, Cecchetti R, Riuzzi F, Peirce MJ, Talesa VN. Glyoxalase 1 sustains the metastatic phenotype of prostate cancer cells via EMT control. J Cell Mol Med 2018; 22:2865-2883. [PMID: 29504694 PMCID: PMC5908125 DOI: 10.1111/jcmm.13581] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2017] [Accepted: 01/23/2018] [Indexed: 01/07/2023] Open
Abstract
Metastasis is the primary cause of death in prostate cancer (PCa) patients. Effective therapeutic intervention in metastatic PCa is undermined by our poor understanding of its molecular aetiology. Defining the mechanisms underlying PCa metastasis may lead to insights into how to decrease morbidity and mortality in this disease. Glyoxalase 1 (Glo1) is the detoxification enzyme of methylglyoxal (MG), a potent precursor of advanced glycation end products (AGEs). Hydroimidazolone (MG-H1) and argpyrimidine (AP) are AGEs originating from MG-mediated post-translational modification of proteins at arginine residues. AP is involved in the control of epithelial to mesenchymal transition (EMT), a crucial determinant of cancer metastasis and invasion, whose regulation mechanisms in malignant cells are still emerging. Here, we uncover a novel mechanism linking Glo1 to the maintenance of the metastatic phenotype of PCa cells by controlling EMT by engaging the tumour suppressor miR-101, MG-H1-AP and TGF-β1/Smad signalling. Moreover, circulating levels of Glo1, miR-101, MG-H1-AP and TGF-β1 in patients with metastatic compared with non-metastatic PCa support our in vitro results, demonstrating their clinical relevance. We suggest that Glo1, together with miR-101, might be potential therapeutic targets for metastatic PCa, possibly by metformin administration.
Collapse
Affiliation(s)
- Cinzia Antognelli
- Department of Experimental MedicineUniversity of PerugiaPerugiaItaly
| | - Rodolfo Cecchetti
- Department of Experimental MedicineUniversity of PerugiaPerugiaItaly
| | - Francesca Riuzzi
- Department of Experimental MedicineUniversity of PerugiaPerugiaItaly
| | - Matthew J. Peirce
- Department of Experimental MedicineUniversity of PerugiaPerugiaItaly
| | | |
Collapse
|
29
|
Chiu CJ, Rabbani N, Rowan S, Chang ML, Sawyer S, Hu FB, Willett W, Thornalley PJ, Anwar A, Bar L, Kang JH, Taylor A. Studies of advanced glycation end products and oxidation biomarkers for type 2 diabetes. Biofactors 2018; 44:281-288. [PMID: 29718545 PMCID: PMC8527553 DOI: 10.1002/biof.1423] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/06/2018] [Accepted: 03/07/2018] [Indexed: 11/05/2022]
Abstract
Advanced glycation end products (AGEs) are formed upon nonenzymatic reactions of sugars or their metabolites with proteins and other cellular constituents. Many AGEs are long lived. Recent findings suggest that AGEs may predict diabetes and its complications and thus may warrant further study. The objective of this study was to assess the validity of our experimental procedures for measuring AGEs in stored blood sample and to conduct a pilot study for developing AGE biomarkers for diabetes and/or age-related changes of glucose metabolism. We conducted a reliability study of the samples and methods using liquid chromatography-tandem mass spectrometry (LC-MS)/MS assays for 10 AGEs (including methylglyoxal-derived hydroimidazolone (MG-H1), glucosepane (GSP) and two oxidation measures, in stored repository blood samples from the Nurses' Health Study and the Health Professionals Follow-up Study. We also analyzed data relating blood GSP levels to type 2 diabetes status in a case-control study (25 cases and 15 controls). Among the AGEs, GSP, and MG-H1 showed the highest reliability across the various measures: reliability in duplicate samples and stability with delayed processing and storage over 1-2 year period. Furthermore, plasma GSP was associated with older age (P = 0.04) and type 2 diabetes status (age-adjusted P = 0.0475). Our findings suggest that analysis of these AGEs may be developed as biomarkers for diabetes and/or age-related changes of glucose metabolism. © 2018 BioFactors, 44(3):281-288, 2018.
Collapse
Affiliation(s)
- Chung-Jung Chiu
- Jean Mayer United States Department of Agriculture Human Nutrition Research Center on Aging, Tufts University, Boston, MA, USA
- Addresses for correspondence: Chung-Jung Chiu, DDS PhD, Jean Mayer United States Department of Agriculture Human Nutrition Research Center on Aging at Tufts University, 711 Washington Street, Boston, MA 02111, USA. TEL.: 617-556-3157, FAX: 617-556-3132; . and Allen Taylor, PhD, Jean Mayer United States Department of Agriculture Human Nutrition Research Center on Aging at Tufts University, 711 Washington Street, Boston, MA 02111, USA. TEL.: 617-556-3156, FAX: 617-556-3132;
| | - Naila Rabbani
- Warwick Medical School, University of Warwick, Clinical Sciences Research Laboratories, University Hospital, Coventry, UK
- Zeeman Institute of Systems Biology, University of Warwick, Clinical Sciences Research Laboratories, University Hospital, Coventry, UK
- Proteomics Research Technology Plateform, School of Life Sciences, University of Warwick, Gibbet Hill, Coventry, UK
| | - Sheldon Rowan
- Jean Mayer United States Department of Agriculture Human Nutrition Research Center on Aging, Tufts University, Boston, MA, USA
| | - Min-Lee Chang
- Jean Mayer United States Department of Agriculture Human Nutrition Research Center on Aging, Tufts University, Boston, MA, USA
| | - Sherilyn Sawyer
- Channing Division of Network Medicine, Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA, USA
| | - Frank B. Hu
- Channing Division of Network Medicine, Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA, USA
| | - Walter Willett
- Channing Division of Network Medicine, Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA, USA
| | - Paul J. Thornalley
- Warwick Medical School, University of Warwick, Clinical Sciences Research Laboratories, University Hospital, Coventry, UK
- Zeeman Institute of Systems Biology, University of Warwick, Clinical Sciences Research Laboratories, University Hospital, Coventry, UK
| | - Attia Anwar
- Warwick Medical School, University of Warwick, Clinical Sciences Research Laboratories, University Hospital, Coventry, UK
- Zeeman Institute of Systems Biology, University of Warwick, Clinical Sciences Research Laboratories, University Hospital, Coventry, UK
| | | | - Jae H. Kang
- Channing Division of Network Medicine, Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA, USA
| | - Allen Taylor
- Jean Mayer United States Department of Agriculture Human Nutrition Research Center on Aging, Tufts University, Boston, MA, USA
- Addresses for correspondence: Chung-Jung Chiu, DDS PhD, Jean Mayer United States Department of Agriculture Human Nutrition Research Center on Aging at Tufts University, 711 Washington Street, Boston, MA 02111, USA. TEL.: 617-556-3157, FAX: 617-556-3132; . and Allen Taylor, PhD, Jean Mayer United States Department of Agriculture Human Nutrition Research Center on Aging at Tufts University, 711 Washington Street, Boston, MA 02111, USA. TEL.: 617-556-3156, FAX: 617-556-3132;
| |
Collapse
|
30
|
Meher AK, Spinosa M, Davis JP, Pope N, Laubach VE, Su G, Serbulea V, Leitinger N, Ailawadi G, Upchurch GR. Novel Role of IL (Interleukin)-1β in Neutrophil Extracellular Trap Formation and Abdominal Aortic Aneurysms. Arterioscler Thromb Vasc Biol 2018; 38:843-853. [PMID: 29472233 PMCID: PMC5864548 DOI: 10.1161/atvbaha.117.309897] [Citation(s) in RCA: 140] [Impact Index Per Article: 23.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2017] [Accepted: 02/12/2018] [Indexed: 11/16/2022]
Abstract
OBJECTIVE Neutrophils promote experimental abdominal aortic aneurysm (AAA) formation via a mechanism that is independent from MMPs (matrix metalloproteinases). Recently, we reported a dominant role of IL (interleukin)-1β in the formation of murine experimental AAAs. Here, the hypothesis that IL-1β-induced neutrophil extracellular trap formation (NETosis) promotes AAA was tested. APPROACH AND RESULTS NETs were identified through colocalized staining of neutrophil, Cit-H3 (citrullinated histone H3), and DNA, using immunohistochemistry. NETs were detected in human AAAs and were colocalized with IL-1β. In vitro, IL-1RA attenuated IL-1β-induced NETosis in human neutrophils. Mechanistically, IL-1β treatment of isolated neutrophils induced nuclear localization of ceramide synthase 6 and synthesis of C16-ceramide, which was inhibited by IL-1RA or fumonisin B1, an inhibitor of ceramide synthesis. Furthermore, IL-1RA or fumonisin B1 attenuated IL1-β-induced NETosis. In an experimental model of murine AAA, NETs were detected at a very early stage-day 3 of aneurysm induction. IL-1β-knockout mice demonstrated significantly lower infiltration of neutrophils to aorta and were protected from AAA. Adoptive transfer of wild-type neutrophils promoted AAA formation in IL-1β-knockout mice. Moreover, treatment of wild-type mice with Cl-amidine, an inhibitor NETosis, significantly attenuated AAA formation, whereas, treatment with deoxyribonuclease, a DNA digesting enzyme, had no effect on AAA formation. CONCLUSIONS Altogether, the results suggest a dominant role of IL-1β-induced NETosis in AAA formation.
Collapse
MESH Headings
- Animals
- Aorta, Abdominal/drug effects
- Aorta, Abdominal/metabolism
- Aorta, Abdominal/pathology
- Aortic Aneurysm, Abdominal/genetics
- Aortic Aneurysm, Abdominal/metabolism
- Aortic Aneurysm, Abdominal/pathology
- Aortic Aneurysm, Abdominal/prevention & control
- Ceramides/metabolism
- Disease Models, Animal
- Extracellular Traps/drug effects
- Extracellular Traps/metabolism
- Humans
- Image Processing, Computer-Assisted/methods
- Interleukin-1beta/deficiency
- Interleukin-1beta/genetics
- Interleukin-1beta/metabolism
- Membrane Proteins/metabolism
- Mice
- Mice, Knockout
- Microscopy, Fluorescence/methods
- Neutrophils/drug effects
- Neutrophils/metabolism
- Neutrophils/pathology
- Neutrophils/transplantation
- Ornithine/analogs & derivatives
- Ornithine/pharmacology
- Receptors, Interleukin-1/metabolism
- Signal Transduction
- Sphingosine N-Acyltransferase/metabolism
Collapse
Affiliation(s)
- Akshaya K Meher
- From the Department of Surgery (A.K.M., M.S., J.P.D., N.P., V.E.L., G.S., G.A., G.R.U.), Department of Pharmacology (A.K.M., V.S., N.L.), Robert M. Berne Cardiovascular Research Center (A.K.M., N.L., G.A., G.R.U.), Department of Molecular Physiology and Biological Physics (G.R.U.), and Department of Biomedical Engineering (G.A.), University of Virginia, Charlottesville.
| | - Michael Spinosa
- From the Department of Surgery (A.K.M., M.S., J.P.D., N.P., V.E.L., G.S., G.A., G.R.U.), Department of Pharmacology (A.K.M., V.S., N.L.), Robert M. Berne Cardiovascular Research Center (A.K.M., N.L., G.A., G.R.U.), Department of Molecular Physiology and Biological Physics (G.R.U.), and Department of Biomedical Engineering (G.A.), University of Virginia, Charlottesville
| | - John P Davis
- From the Department of Surgery (A.K.M., M.S., J.P.D., N.P., V.E.L., G.S., G.A., G.R.U.), Department of Pharmacology (A.K.M., V.S., N.L.), Robert M. Berne Cardiovascular Research Center (A.K.M., N.L., G.A., G.R.U.), Department of Molecular Physiology and Biological Physics (G.R.U.), and Department of Biomedical Engineering (G.A.), University of Virginia, Charlottesville
| | - Nicolas Pope
- From the Department of Surgery (A.K.M., M.S., J.P.D., N.P., V.E.L., G.S., G.A., G.R.U.), Department of Pharmacology (A.K.M., V.S., N.L.), Robert M. Berne Cardiovascular Research Center (A.K.M., N.L., G.A., G.R.U.), Department of Molecular Physiology and Biological Physics (G.R.U.), and Department of Biomedical Engineering (G.A.), University of Virginia, Charlottesville
| | - Victor E Laubach
- From the Department of Surgery (A.K.M., M.S., J.P.D., N.P., V.E.L., G.S., G.A., G.R.U.), Department of Pharmacology (A.K.M., V.S., N.L.), Robert M. Berne Cardiovascular Research Center (A.K.M., N.L., G.A., G.R.U.), Department of Molecular Physiology and Biological Physics (G.R.U.), and Department of Biomedical Engineering (G.A.), University of Virginia, Charlottesville
| | - Gang Su
- From the Department of Surgery (A.K.M., M.S., J.P.D., N.P., V.E.L., G.S., G.A., G.R.U.), Department of Pharmacology (A.K.M., V.S., N.L.), Robert M. Berne Cardiovascular Research Center (A.K.M., N.L., G.A., G.R.U.), Department of Molecular Physiology and Biological Physics (G.R.U.), and Department of Biomedical Engineering (G.A.), University of Virginia, Charlottesville
| | - Vlad Serbulea
- From the Department of Surgery (A.K.M., M.S., J.P.D., N.P., V.E.L., G.S., G.A., G.R.U.), Department of Pharmacology (A.K.M., V.S., N.L.), Robert M. Berne Cardiovascular Research Center (A.K.M., N.L., G.A., G.R.U.), Department of Molecular Physiology and Biological Physics (G.R.U.), and Department of Biomedical Engineering (G.A.), University of Virginia, Charlottesville
| | - Norbert Leitinger
- From the Department of Surgery (A.K.M., M.S., J.P.D., N.P., V.E.L., G.S., G.A., G.R.U.), Department of Pharmacology (A.K.M., V.S., N.L.), Robert M. Berne Cardiovascular Research Center (A.K.M., N.L., G.A., G.R.U.), Department of Molecular Physiology and Biological Physics (G.R.U.), and Department of Biomedical Engineering (G.A.), University of Virginia, Charlottesville
| | - Gorav Ailawadi
- From the Department of Surgery (A.K.M., M.S., J.P.D., N.P., V.E.L., G.S., G.A., G.R.U.), Department of Pharmacology (A.K.M., V.S., N.L.), Robert M. Berne Cardiovascular Research Center (A.K.M., N.L., G.A., G.R.U.), Department of Molecular Physiology and Biological Physics (G.R.U.), and Department of Biomedical Engineering (G.A.), University of Virginia, Charlottesville
| | - Gilbert R Upchurch
- From the Department of Surgery (A.K.M., M.S., J.P.D., N.P., V.E.L., G.S., G.A., G.R.U.), Department of Pharmacology (A.K.M., V.S., N.L.), Robert M. Berne Cardiovascular Research Center (A.K.M., N.L., G.A., G.R.U.), Department of Molecular Physiology and Biological Physics (G.R.U.), and Department of Biomedical Engineering (G.A.), University of Virginia, Charlottesville
| |
Collapse
|
31
|
Stravitz RT, Gottfried M, Durkalski V, Fontana RJ, Hanje AJ, Koch D, Hameed B, Ganger D, Subramanian RM, Bukofzer S, Ravis WR, Clasen K, Sherker A, Little L, Lee WM. Safety, tolerability, and pharmacokinetics of l-ornithine phenylacetate in patients with acute liver injury/failure and hyperammonemia. Hepatology 2018; 67:1003-1013. [PMID: 29080224 PMCID: PMC5826861 DOI: 10.1002/hep.29621] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/11/2017] [Revised: 08/03/2017] [Accepted: 10/25/2017] [Indexed: 12/12/2022]
Abstract
Cerebral edema remains a significant cause of morbidity and mortality in patients with acute liver failure (ALF) and has been linked to elevated blood ammonia levels. l-ornithine phenylacetate (OPA) may decrease ammonia by promoting its renal excretion as phenylacetylglutamine (PAGN), decreasing the risk of cerebral edema. We evaluated the safety, tolerability, and pharmacokinetics of OPA in patients with ALF and acute liver injury (ALI), including those with renal failure. Forty-seven patients with ALI/ALF and ammonia ≥60 μM were enrolled. Patients received OPA in a dose escalation scheme from 3.3 g every 24 hours to 10 g every 24 hours; 15 patients received 20 g every 24 hours throughout the infusion for up to 120 hours. Plasma phenylacetate (PA) concentrations were uniformly below target (<75 μg/mL) in those receiving 3.3 g every 24 hours (median [interquartile range] 5.0 [5.0] μg/mL), and increased to target levels in all but one who received 20 g every 24 hours (150 [100] μg/mL). Plasma [PAGN] increased, and conversion of PA to PAGN became saturated, with increasing OPA dose. Urinary PAGN clearance and creatinine clearance were linearly related (r = 0.831, P < 0.0001). Mean ammonia concentrations based on the area under the curve decreased to a greater extent in patients who received 20 g of OPA every 24 hours compared with those who received the maximal dose of 3.3 or 6.7 g every 24 hours (P = 0.046 and 0.022, respectively). Of the reported serious adverse events (AEs), which included 11 deaths, none was attributable to study medication. The only nonserious AEs possibly related to study drug were headache and nausea/vomiting. CONCLUSION OPA was well-tolerated in patients with ALI/ALF, and no safety signals were identified. Target [PA] was achieved at infusion rates of 20 g every 24 hours, leading to ammonia excretion in urine as PAGN in proportion to renal function. Randomized, controlled studies of high-dose OPA are needed to determine its use as an ammonia-scavenging agent in patients with ALF. (Hepatology 2018;67:1003-1013).
Collapse
Affiliation(s)
| | | | | | | | | | - David Koch
- Medical University of South Carolina, Charleston, SC
| | - Bilal Hameed
- University of California at San Francisco, San Francisco, CA
| | | | | | | | | | | | - Averell Sherker
- National Institute of Diabetes, Digestive and Kidney Disease, Bethesda, MD
| | - Lanna Little
- University of Texas, Southwestern Medical Center, Dallas, TX
| | - William M. Lee
- University of Texas, Southwestern Medical Center, Dallas, TX
| |
Collapse
|
32
|
Marinucci L, Balloni S, Fettucciari K, Bodo M, Talesa VN, Antognelli C. Nicotine induces apoptosis in human osteoblasts via a novel mechanism driven by H 2O 2 and entailing Glyoxalase 1-dependent MG-H1 accumulation leading to TG2-mediated NF-kB desensitization: Implication for smokers-related osteoporosis. Free Radic Biol Med 2018; 117:6-17. [PMID: 29355739 DOI: 10.1016/j.freeradbiomed.2018.01.017] [Citation(s) in RCA: 62] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/30/2017] [Revised: 01/11/2018] [Accepted: 01/15/2018] [Indexed: 12/11/2022]
Abstract
Nicotine contained in cigarette smoke contributes to the onset of several diseases, including osteoporosis, whose emerging pathogenic mechanism is associated with osteoblasts apoptosis. Scanty information is available on the molecular mechanisms of nicotine on osteoblasts apoptosis and, consequently, on an important aspect of the pathogenesis of smokers-related osteoporosis. Glyoxalase 1 (Glo1) is the detoxification enzyme of methylglyoxal (MG), a major precursor of advanced glycation end products (AGEs), potent pro-apoptotic agents. Hydroimidazolone (MG-H1) is the major AGE derived from the spontaneous MG adduction of arginine residues. The aim of this study was to investigate whether, and by means of which mechanism, the antiglycation defence Glo1 was involved in the apoptosis induced by 0.1 and 1µM nicotine in human primary osteoblasts chronically exposed for 11 and 21 days. By using gene overexpression/silencing and scavenging/inhibitory agents, we demonstrated that nicotine induces a significant intracellular accumulation of hydrogen peroxide (H2O2) that, by inhibiting Glo1, drives MG-H1 accumulation/release. MG-H1, in turn, triggers H2O2 overproduction via receptor for AGEs (RAGE) and, in parallel, an apoptotic mitochondrial pathway by inducing Transglutaminase 2 (TG2) downregulation-dependent NF-kB desensitization. Measurements of H2O2, Glo1 and MG-H1 circulating levels in smokers compared with non-smokers or in smokers with osteoporosis compared with those without this bone-related disease supported the results obtained in vitro. Our findings newly pose the antiglycation enzymatic defense Glo1 and MG-H1 among the molecular events involved in nicotine-induced reactive oxygen species-mediated osteoblasts apoptosis, a crucial event in smoker-related osteoporosis, and suggest novel exposure markers in health surveillance programmes related to smokers-associated osteoporosis.
Collapse
Affiliation(s)
| | - Stefania Balloni
- Department of Experimental Medicine, University of Perugia, Italy
| | | | - Maria Bodo
- Department of Experimental Medicine, University of Perugia, Italy
| | | | | |
Collapse
|
33
|
Hause F, Schlote D, Simm A, Hoffmann K, Santos AN. Accumulation of glycated proteins suggesting premature ageing in lamin B receptor deficient mice. Biogerontology 2018; 19:95-100. [PMID: 29081010 DOI: 10.1007/s10522-017-9733-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2017] [Accepted: 10/19/2017] [Indexed: 01/01/2023]
Abstract
Accumulation of advanced glycation end products (AGEs) is accompanied by increased free radical activity which contributes to ageing and the development or worsening of degenerative diseases. Apart from other physiological factors, AGEs are also an important biomarker for premature ageing. Here we report protein modifications (glycation) in a mouse model of lamin B receptor deficient ic J /ic J mice displaying skin defects similar to those of classical progeria. Therefore, we analysed AGE-modifications in protein extracts from various tissues of ic J /ic J mice. Our results demonstrated that pentosidine as well as argpyrimidine were increased in ic J /ic J mice indicating a modification specific increase in biomarkers of ageing, especially derived from glycolysis dependent methylglyoxal. Furthermore, the expression of AGE-preventing enzymes (Glo1, Fn3k) differed between ic J /ic J and control mice. The results indicate that not only lamin A but also the lamin B receptor may be involved in ageing processes.
Collapse
Affiliation(s)
- Frank Hause
- Institute for Human Genetics, Martin Luther University of Halle-Wittenberg, 06112, Halle, Germany
| | - Dietmar Schlote
- Institute for Human Genetics, Martin Luther University of Halle-Wittenberg, 06112, Halle, Germany.
| | - Andreas Simm
- Clinic for Cardiac und Thoracic Surgery, Martin Luther University of Halle-Wittenberg, 06097, Halle, Germany
| | - Katrin Hoffmann
- Institute for Human Genetics, Martin Luther University of Halle-Wittenberg, 06112, Halle, Germany
| | - Alexander Navarrete Santos
- Clinic for Cardiac und Thoracic Surgery, Martin Luther University of Halle-Wittenberg, 06097, Halle, Germany
| |
Collapse
|
34
|
Marek A, Nguyen HTH, Brož B, Tureček F. Stereospecific control of peptide gas-phase ion chemistry with cis and trans cyclo ornithine residues. J Mass Spectrom 2018; 53:124-137. [PMID: 29150896 DOI: 10.1002/jms.4047] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/13/2017] [Revised: 11/02/2017] [Accepted: 11/06/2017] [Indexed: 06/07/2023]
Abstract
We report non-chiral amino acid residues cis- and trans-1,4-diaminocyclohexane-1-carboxylic acid (cyclo-ornithine, cO) that exhibit unprecedented stereospecific control of backbone dissociations of singly charged peptide cations and hydrogen-rich cation radicals produced by electron-transfer dissociation. Upon collision-induced dissociation (CID) in the slow heating regime, peptide cations containing trans-cO residues undergo facile backbone cleavages of amide bonds C-terminal to trans-cO. By contrast, peptides with cis-cO residues undergo dissociations at several amide bonds along the peptide ion backbone. Diastereoisomeric cO-containing peptides thus provide remarkably distinct tandem mass spectra. The stereospecific effect in CID of the trans-cO residue is explained by syn-facially directed proton transfer from the 4-ammonium group at cO to the C-terminal amide followed by neighboring group participation in the cleavage of the CO-NH bond, analogous to the aspartic acid and ornithine effects. Backbone dissociations of diastereoisomeric cO-containing peptide ions generate distinct [bn ]+ -type fragment ions that were characterized by CID-MS3 spectra. Stereospecific control is also reported for electron-transfer dissociation of cis- and trans-cO containing doubly charged peptide ions. The stereospecific effect upon electron transfer is related to the different conformations of doubly charged peptide ions that affect the electron attachment sites and ensuing N-Cα bond dissociations.
Collapse
Affiliation(s)
- Aleš Marek
- Department of Chemistry, University of Washington, Bagley Hall, Box 351700, Seattle, WA, 98195-1700, USA
- Czech Academy of Sciences, Institute of Organic Chemistry and Biochemistry, Prague, Czech Republic
| | - Huong T H Nguyen
- Department of Chemistry, University of Washington, Bagley Hall, Box 351700, Seattle, WA, 98195-1700, USA
| | - Břetislav Brož
- Czech Academy of Sciences, Institute of Organic Chemistry and Biochemistry, Prague, Czech Republic
| | - František Tureček
- Department of Chemistry, University of Washington, Bagley Hall, Box 351700, Seattle, WA, 98195-1700, USA
| |
Collapse
|
35
|
Novotny J, Chandraratne S, Weinberger T, Philippi V, Stark K, Ehrlich A, Pircher J, Konrad I, Oberdieck P, Titova A, Hoti Q, Schubert I, Legate KR, Urtz N, Lorenz M, Pelisek J, Massberg S, von Brühl ML, Schulz C. Histological comparison of arterial thrombi in mice and men and the influence of Cl-amidine on thrombus formation. PLoS One 2018; 13:e0190728. [PMID: 29293656 PMCID: PMC5749862 DOI: 10.1371/journal.pone.0190728] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2017] [Accepted: 12/19/2017] [Indexed: 02/08/2023] Open
Abstract
Aims Medical treatment of arterial thrombosis is mainly directed against platelets and coagulation factors, and can lead to bleeding complications. Novel antithrombotic therapies targeting immune cells and neutrophil extracellular traps (NETs) are currently being investigated in animals. We addressed whether immune cell composition of arterial thrombi induced in mouse models of thrombosis resemble those of human patients with acute myocardial infarction (AMI). Methods and results In a prospective cohort study of patients suffering from AMI, 81 human arterial thrombi were harvested during percutaneous coronary intervention and subjected to detailed histological analysis. In mice, arterial thrombi were induced using two distinct experimental models, ferric chloride (FeCl3) and wire injury of the carotid artery. We found that murine arterial thrombi induced by FeCl3 were highly concordant with human coronary thrombi regarding their immune cell composition, with neutrophils being the most abundant cell type, as well as the presence of NETs and coagulation factors. Pharmacological treatment of mice with the protein arginine deiminase (PAD)-inhibitor Cl-amidine abrogated NET formation, reduced arterial thrombosis and limited injury in a model of myocardial infarction. Conclusions Neutrophils are a hallmark of arterial thrombi in patients suffering from acute myocardial infarction and in mouse models of arterial thrombosis. Inhibition of PAD could represent an interesting strategy for the treatment of arterial thrombosis to reduce neutrophil-associated tissue damage and improve functional outcome.
Collapse
Affiliation(s)
- Julia Novotny
- Medizinische Klinik und Poliklinik I, Ludwig-Maximilians-Universität, Munich, Germany
- Walter-Brendel-Centre of Experimental Medicine, Ludwig-Maximilians-Universität, Munich, Germany
- DZHK (German Centre for Cardiovascular Research), partner site Munich Heart Alliance, Munich, Germany
| | - Sue Chandraratne
- Medizinische Klinik und Poliklinik I, Ludwig-Maximilians-Universität, Munich, Germany
- Walter-Brendel-Centre of Experimental Medicine, Ludwig-Maximilians-Universität, Munich, Germany
- DZHK (German Centre for Cardiovascular Research), partner site Munich Heart Alliance, Munich, Germany
| | - Tobias Weinberger
- Medizinische Klinik und Poliklinik I, Ludwig-Maximilians-Universität, Munich, Germany
- Walter-Brendel-Centre of Experimental Medicine, Ludwig-Maximilians-Universität, Munich, Germany
- DZHK (German Centre for Cardiovascular Research), partner site Munich Heart Alliance, Munich, Germany
| | - Vanessa Philippi
- Medizinische Klinik und Poliklinik I, Ludwig-Maximilians-Universität, Munich, Germany
- Walter-Brendel-Centre of Experimental Medicine, Ludwig-Maximilians-Universität, Munich, Germany
| | - Konstantin Stark
- Medizinische Klinik und Poliklinik I, Ludwig-Maximilians-Universität, Munich, Germany
- Walter-Brendel-Centre of Experimental Medicine, Ludwig-Maximilians-Universität, Munich, Germany
- DZHK (German Centre for Cardiovascular Research), partner site Munich Heart Alliance, Munich, Germany
| | - Andreas Ehrlich
- Medizinische Klinik und Poliklinik I, Ludwig-Maximilians-Universität, Munich, Germany
- Walter-Brendel-Centre of Experimental Medicine, Ludwig-Maximilians-Universität, Munich, Germany
- DZHK (German Centre for Cardiovascular Research), partner site Munich Heart Alliance, Munich, Germany
| | - Joachim Pircher
- Medizinische Klinik und Poliklinik I, Ludwig-Maximilians-Universität, Munich, Germany
- Walter-Brendel-Centre of Experimental Medicine, Ludwig-Maximilians-Universität, Munich, Germany
- DZHK (German Centre for Cardiovascular Research), partner site Munich Heart Alliance, Munich, Germany
| | - Ildiko Konrad
- Medizinische Klinik und Poliklinik I, Ludwig-Maximilians-Universität, Munich, Germany
- Walter-Brendel-Centre of Experimental Medicine, Ludwig-Maximilians-Universität, Munich, Germany
| | - Paul Oberdieck
- Medizinische Klinik und Poliklinik I, Ludwig-Maximilians-Universität, Munich, Germany
- Walter-Brendel-Centre of Experimental Medicine, Ludwig-Maximilians-Universität, Munich, Germany
| | - Anna Titova
- Medizinische Klinik und Poliklinik I, Ludwig-Maximilians-Universität, Munich, Germany
- Walter-Brendel-Centre of Experimental Medicine, Ludwig-Maximilians-Universität, Munich, Germany
| | - Qendresa Hoti
- Medizinische Klinik und Poliklinik I, Ludwig-Maximilians-Universität, Munich, Germany
- Walter-Brendel-Centre of Experimental Medicine, Ludwig-Maximilians-Universität, Munich, Germany
| | - Irene Schubert
- Medizinische Klinik und Poliklinik I, Ludwig-Maximilians-Universität, Munich, Germany
- Walter-Brendel-Centre of Experimental Medicine, Ludwig-Maximilians-Universität, Munich, Germany
- DZHK (German Centre for Cardiovascular Research), partner site Munich Heart Alliance, Munich, Germany
| | - Kyle R. Legate
- Medizinische Klinik und Poliklinik I, Ludwig-Maximilians-Universität, Munich, Germany
- Department of Applied Physics, Center for NanoSciences, Ludwig-Maximilians-Universität, Munich, Germany
| | - Nicole Urtz
- Medizinische Klinik und Poliklinik I, Ludwig-Maximilians-Universität, Munich, Germany
- Walter-Brendel-Centre of Experimental Medicine, Ludwig-Maximilians-Universität, Munich, Germany
- DZHK (German Centre for Cardiovascular Research), partner site Munich Heart Alliance, Munich, Germany
| | - Michael Lorenz
- Medizinische Klinik und Poliklinik I, Ludwig-Maximilians-Universität, Munich, Germany
- Walter-Brendel-Centre of Experimental Medicine, Ludwig-Maximilians-Universität, Munich, Germany
- DZHK (German Centre for Cardiovascular Research), partner site Munich Heart Alliance, Munich, Germany
| | - Jaroslav Pelisek
- Department of Vascular and Endovascular Surgery, Klinikum rechts der Isar der Technischen Universität, Munich, Germany
| | - Steffen Massberg
- Medizinische Klinik und Poliklinik I, Ludwig-Maximilians-Universität, Munich, Germany
- Walter-Brendel-Centre of Experimental Medicine, Ludwig-Maximilians-Universität, Munich, Germany
- DZHK (German Centre for Cardiovascular Research), partner site Munich Heart Alliance, Munich, Germany
| | - Marie-Luise von Brühl
- Medizinische Klinik und Poliklinik I, Ludwig-Maximilians-Universität, Munich, Germany
- Walter-Brendel-Centre of Experimental Medicine, Ludwig-Maximilians-Universität, Munich, Germany
- DZHK (German Centre for Cardiovascular Research), partner site Munich Heart Alliance, Munich, Germany
| | - Christian Schulz
- Medizinische Klinik und Poliklinik I, Ludwig-Maximilians-Universität, Munich, Germany
- Walter-Brendel-Centre of Experimental Medicine, Ludwig-Maximilians-Universität, Munich, Germany
- DZHK (German Centre for Cardiovascular Research), partner site Munich Heart Alliance, Munich, Germany
- * E-mail:
| |
Collapse
|
36
|
Flückiger R, Cocuzzi E, Nagaraj RH, Shoham M, Kern TS, Medof ME. DAF in diabetic patients is subject to glycation/inactivation at its active site residues. Mol Immunol 2017; 93:246-252. [PMID: 28886871 DOI: 10.1016/j.molimm.2017.06.036] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2017] [Revised: 06/14/2017] [Accepted: 06/19/2017] [Indexed: 11/30/2022]
Abstract
Decay accelerating factor (DAF or CD55) is a cell associated C3 and C5 convertase regulator originally described in terms of protection of self-cells from systemic complement but now known to modulate adaptive T cell responses. It is expressed on all cell types. We investigated whether nonenzymatic glycation could impair its function and potentially be relevant to complications of diabetes mellitus and other conditions that result in nonenzymatic glycation including cancer, Alzheimer's disease, and aging. Immunoblots of affinity-purified DAF from erythrocytes of patients with diabetes showed pentosidine, glyoxal-AGEs, carboxymethyllysine, and argpyrimidine. HPLC/MS analyses of glucose modified DAF localized the sites of AGE modifications to K125 adjacent to K126, K127 at the junction of CCPs2-3 and spatially near R96, and R100, all identified as being critical for DAF's function. Functional analyses of glucose or ribose treated DAF protein showed profound loss of its regulatory activity. The data argue that de-regulated activation of systemic complement and de-regulated activation of T cells and leukocytes could result from non-enzymatic glycation of DAF.
Collapse
Affiliation(s)
| | - Enzo Cocuzzi
- Institute of Pathology, Case Western Reserve University, Cleveland, OH, USA
| | - Ram H Nagaraj
- Department of Ophthalmology, Case Western Reserve University, Cleveland, OH, USA
| | - Menachem Shoham
- Department of Biochemistry, Case Western Reserve University, Cleveland, OH, USA
| | - Timothy S Kern
- Department of Medicine, Case Western Reserve University, Cleveland, OH, USA; Center for Diabetes Research, Case Western Reserve University, Cleveland, OH, USA
| | - M Edward Medof
- Institute of Pathology, Case Western Reserve University, Cleveland, OH, USA; Department of Ophthalmology, Case Western Reserve University, Cleveland, OH, USA; Department of Medicine, Case Western Reserve University, Cleveland, OH, USA.
| |
Collapse
|
37
|
Abstract
BACKGROUND Propionic acidemia is a rare metabolic disorder caused by a deficiency of propionyl- CoA carboxylase, the enzyme converting propionyl-CoA to methylmalonyl-CoA that subsequently enters the citric acid cycle as succinyl-CoA. Patients with propionic acidemia cannot metabolize propionic acid, which combines with oxaloacetate to form methylcitric acid. This, with the defective supply of succinyl-CoA, may lead to a deficiency in citric acid cycle intermediates. PURPOSE The objective of this study was to determine whether supplements with glutamine (400mg/kg per day), citrate (7.5mEq/kg per day), or ornithine α-ketoglutarate (400mg/kg per day) (anaplerotic agents that could fill up the citric acid cycle) would affect plasma levels of glutamine and ammonia, the urinary excretion of Krebs cycle intermediates, and the clinical outcome in 3 patients with propionic acidemia. METHODS Each supplement was administered daily for four weeks with a two week washout period between supplements. The supplement that produced the most favorable changes was supplemented for 30 weeks following the initial study period and then for a 2 year extension. RESULTS The urinary excretion of the Krebs cycle intermediates, α-ketoglutarate, succinate, and fumarate increased significantly compared to baseline during citrate supplementation, but not with the other two supplements. For this reason, citrate supplements were continued in the second part of the study. The urinary excretion of methylcitric acid and 3-hydroxypropionic acid did not change with any intervention. No significant changes in ammonia or glutamine levels were observed with any supplement. However, supplementation with any anaplerotic agents normalized the physiological buffering of ammonia by glutamate, with plasma glutamate and alanine levels significantly increasing, rather than decreasing with increasing ammonia levels. No significant side effects were observed with any therapy and safety labs (blood counts, chemistry and thyroid profile) remained unchanged. Motor and cognitive development was severely delayed before the trial and did not change significantly with therapy. Hospitalizations per year did not change during the trial period, but decreased significantly (p<0.05) in the 2years following the study (when citrate was continued) compared to the 2years before and during the study. CONCLUSIONS These results indicate that citrate entered the Krebs cycle providing successful anaplerotic therapy by increasing levels of the downstream intermediates of the Krebs cycle: α-ketoglutarate, succinate and fumarate. Citrate supplements were safe and might have contributed to reduce hospitalizations in patients with propionic acidemia.
Collapse
Affiliation(s)
- Nicola Longo
- Division of Medical Genetics, Department of Pediatrics, University of Utah, Salt Lake City, UT, USA; Department of Pathology, University of Utah, ARUP Laboratories, Salt Lake City, UT, USA.
| | - Leisa B Price
- Division of Medical Genetics, Department of Pediatrics, University of Utah, Salt Lake City, UT, USA
| | - Eduard Gappmaier
- Department of Physical Therapy, University of Utah, Salt Lake City, UT, USA
| | | | - Sharon L Ernst
- Division of Medical Genetics, Department of Pediatrics, University of Utah, Salt Lake City, UT, USA
| | - Carrie Bailey
- Division of Medical Genetics, Department of Pediatrics, University of Utah, Salt Lake City, UT, USA
| | - Marzia Pasquali
- Department of Pathology, University of Utah, ARUP Laboratories, Salt Lake City, UT, USA
| |
Collapse
|
38
|
Aguilera S, Alvarez-Morales A, Murillo J, Hernández-Flores JL, Bravo J, De la Torre-Zavala S. Temperature-mediated biosynthesis of the phytotoxin phaseolotoxin by Pseudomonas syringae pv. phaseolicola depends on the autoregulated expression of the phtABC genes. PLoS One 2017; 12:e0178441. [PMID: 28570637 PMCID: PMC5453526 DOI: 10.1371/journal.pone.0178441] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2017] [Accepted: 05/12/2017] [Indexed: 11/18/2022] Open
Abstract
Pseudomonas syringae pv. phaseolicola produces phaseolotoxin in a temperature dependent manner, being optimally synthesized between 18°C and 20°C, while no detectable amounts are present above 28°C. The Pht cluster, involved in the biosynthesis of phaseolotoxin, contains 23 genes that are organized in five transcriptional units. The function of most of the genes from the Pht cluster is still unknown and little information about the regulatory circuitry leading to expression of these genes has been reported. The purpose of the present study was to investigate the participation of pht genes in the regulation of the operons coded into the Pht cluster. We conducted Northern blot, uidA fusions and reverse transcription-PCR assays of pht genes in several mutants unable to produce phaseolotoxin. This allowed us to determine that, in P. syringae pv. phaseolicola NPS3121, genes phtABC are essential to prevent their own expression at 28°C, a temperature at which no detectable amounts of the toxin are present. We obtained evidence that the phtABC genes also participate in the regulation of the phtD, phtM and phtL operons. According to our results, we propose that PhtABC and other Pht product activities could be involved in the synthesis of the sulfodiaminophosphinyl moiety of phaseolotoxin, which indirectly could be involved in the transcriptional regulation of the phtA operon.
Collapse
Affiliation(s)
- Selene Aguilera
- Laboratorio Integral de Investigación en Alimentos. CONACYT-Instituto Tecnológico de Tepic, Tepic, Nayarit, México
- * E-mail:
| | - Ariel Alvarez-Morales
- Departamento de Ingeniería Genética, Centro de Investigación y de Estudios Avanzados (CINVESTAV), Irapuato, Guanajuato, México
| | - Jesús Murillo
- Departamento de Producción Agraria, Universidad Pública de Navarra, Pamplona, Spain
| | - José Luis Hernández-Flores
- Departamento de Ingeniería Genética, Centro de Investigación y de Estudios Avanzados (CINVESTAV), Irapuato, Guanajuato, México
| | - Jaime Bravo
- Laboratorio Integral de Investigación en Alimentos. Instituto Tecnológico de Tepic, Tepic, Nayarit, México
| | - Susana De la Torre-Zavala
- Instituto de Biotecnología, Facultad de Ciencias Biológicas, Universidad Autónoma de Nuevo León, Monterrey, Nuevo León, México
| |
Collapse
|
39
|
Molesini B, Zanzoni S, Mennella G, Francese G, Losa A, L Rotino G, Pandolfini T. The Arabidopsis N-Acetylornithine Deacetylase Controls Ornithine Biosynthesis via a Linear Pathway with Downstream Effects on Polyamine Levels. Plant Cell Physiol 2017; 58:130-144. [PMID: 28064246 DOI: 10.1093/pcp/pcw167] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/05/2016] [Accepted: 09/22/2016] [Indexed: 06/06/2023]
Abstract
Arabidopsis thaliana At4g17830 codes for a protein showing sequence similarity with the Escherichia coli N-acetylornithine deacetylase (EcArgE), an enzyme implicated in the linear ornithine (Orn) biosynthetic pathway. In plants, N-acetylornithine deacetylase (NAOD) activity has yet to be demonstrated; however, At4g17830-silenced and mutant (atnaod) plants display an impaired reproductive phenotype and altered foliar levels of Orn and polyamines (PAs). Here, we showed the direct connection between At4g17830 function and Orn biosynthesis, demonstrating biochemically that At4g17830 codes for a NAOD. These results are the first experimental proof that Orn can be produced in Arabidopsis via a linear pathway. In this study, to identify the role of AtNAOD in reproductive organs, we carried out a transcriptomic analysis on atnaod mutant and wild-type flowers. In the atnaod mutant, the most relevant effects were the reduced expression of cysteine-rich peptide-coding genes, known to regulate male-female cross-talk during reproduction, and variation in the expression of genes involved in nitrogen:carbon (N:C) status. The atnaod mutant also exhibited increased levels of sucrose and altered sensitivity to glucose. We hypothesize that AtNAOD participates in Orn and PA homeostasis, contributing to maintain an optimal N:C balance during reproductive development.
Collapse
Affiliation(s)
- Barbara Molesini
- Department of Biotechnology, University of Verona, Verona, Italy
| | - Serena Zanzoni
- Department of Biotechnology, University of Verona, Verona, Italy
| | - Giuseppe Mennella
- Consiglio per la ricerca in agricoltura e l'analisi dell'economia agraria, Centro di Ricerca per l'Orticoltura, Pontecagnano-Faiano (Salerno), Italy
| | - Gianluca Francese
- Consiglio per la ricerca in agricoltura e l'analisi dell'economia agraria, Centro di Ricerca per l'Orticoltura, Pontecagnano-Faiano (Salerno), Italy
| | - Alessia Losa
- Consiglio per la ricerca in agricoltura e l'analisi dell'economia agraria, Unità di ricerca per l'Orticoltura (ORL), Montanaso Lombardo (Lodi), Italy
| | - Giuseppe L Rotino
- Consiglio per la ricerca in agricoltura e l'analisi dell'economia agraria, Unità di ricerca per l'Orticoltura (ORL), Montanaso Lombardo (Lodi), Italy
| | | |
Collapse
|
40
|
Kristiansen RG. Current state of knowledge of hepatic encephalopathy (part I): newer treatment strategies for hyperammonemia in liver failure. Metab Brain Dis 2016; 31:1357-1358. [PMID: 27651377 DOI: 10.1007/s11011-016-9908-9] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/28/2016] [Accepted: 09/05/2016] [Indexed: 01/27/2023]
Abstract
Alterations in interorgan metabolism of ammonia play an important role in the onset of hyperammonemia in liver failure. Glutamine synthetase (GS) in muscle is an important target for ammonia removal strategies in hyperammonemia. Ornithine Phenylacetate (OP) is hypothesized to remove ammonia by providing glutamate as a substrate for increased GS activity and hence glutamine production. The newly generated glutamine conjugates with phenylacetate forming phenylacetylglutamine which can be excreted in the urine, providing an excretion pathway for ammonia. We have also shown that OP targets glycine metabolism, providing an additional ammonia reducing effect.
Collapse
Affiliation(s)
- Rune Gangsoy Kristiansen
- Department of Anesthesiology, Anesthesia and Critical Care Research Group, University Hospital of North Norway, UiT-The Arctic University of Norway, Tromsø, Norway.
| |
Collapse
|
41
|
Kristiansen RG, Rose CF, Ytrebø LM. Glycine and hyperammonemia: potential target for the treatment of hepatic encephalopathy. Metab Brain Dis 2016; 31:1269-1273. [PMID: 27339764 DOI: 10.1007/s11011-016-9858-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/05/2015] [Accepted: 06/12/2016] [Indexed: 01/10/2023]
Abstract
Hepatic encephalopathy (HE) is a neuropsychiatric disorder caused by hepatic dysfunction. Numerous studies dictate that ammonia plays an important role in the pathogenesis of HE, and hyperammonemia can lead to alterations in amino acid homeostasis. Glutamine and glycine are both ammoniagenic amino acids that are increased in liver failure. Modulating the levels of glutamine and glycine has shown to reduce ammonia concentration in hyperammonemia. Ornithine Phenylacetate (OP) has consistently been shown to reduce arterial ammonia levels in liver failure by modulating glutamine levels. In addition to this, OP has also been found to modulate glycine concentration providing an additional ammonia removing effect. Data support that glycine also serves an important role in N-methyl D-aspartate (NMDA) receptor mediated neurotransmission in HE. This potential important role for glycine in the pathogenesis of HE merits further investigations.
Collapse
Affiliation(s)
- Rune Gangsøy Kristiansen
- Department of Anesthesiology, Anesthesia and Critical Care Research Group, University Hospital of North Norway and UiT-The Arctic University of Norway, Tromsø, Norway.
- Department of Anesthesiology, Ålesund Hospital, Helse Møre og Romsdal, 6010, Ålesund, Norway.
| | - Christopher F Rose
- Hepato-Neuro Laboratory, CRCHUM, Université de Montréal, Montréal, QC, Canada
| | - Lars Marius Ytrebø
- Department of Anesthesiology, Anesthesia and Critical Care Research Group, University Hospital of North Norway and UiT-The Arctic University of Norway, Tromsø, Norway
| |
Collapse
|
42
|
Nomi Y, Annaka H, Sato S, Ueta E, Ohkura T, Yamamoto K, Homma S, Suzuki E, Otsuka Y. Simultaneous Quantitation of Advanced Glycation End Products in Soy Sauce and Beer by Liquid Chromatography-Tandem Mass Spectrometry without Ion-Pair Reagents and Derivatization. J Agric Food Chem 2016; 64:8397-8405. [PMID: 27771957 DOI: 10.1021/acs.jafc.6b02500] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
The aim of this study was to develop a simple and sensitive method to analyze several advanced glycation end products (AGEs) simultaneously using liquid chromatography-tandem mass spectrometry (LC-MS/MS), and to apply this method to the quantitation of AGEs in brown-colored foods. The developed method enabled to separate and quantitate simultaneously seven AGEs, and was applied to the determination of free AGEs contained in various kinds of soy sauce and beer. The major AGEs in soy sauce and beer were Nε-carboxymethyllysine (CML), Nε-carboxyethyllysine (CEL), and Nδ-(5-hydro-5-methyl-4-imidazolon-2-yl)ornithine (MG-H1). Using the developed LC-MS/MS method, recovery test on soy sauce and beer samples showed the recovery values of 85.3-103.9% for CML, 95.9-107.4% for CEL, and 69.5-123.2% for MG-H1. In particular, it is the first report that free CML, CEL, and MG-H1 were present in beer. Furthermore, long-term storage and heating process of soy sauce increased CML and MG-H1.
Collapse
Affiliation(s)
- Yuri Nomi
- Institute of Environmental Science for Human Life, Ochanomizu University , Tokyo 112-0012, Japan
- Faculty of Applied Life Sciences, Niigata University of Pharmacy and Applied Life Sciences , Niigata 956-0841, Japan
| | - Hironori Annaka
- Faculty of Applied Life Sciences, Niigata University of Pharmacy and Applied Life Sciences , Niigata 956-0841, Japan
| | - Shinji Sato
- Faculty of Applied Life Sciences, Niigata University of Pharmacy and Applied Life Sciences , Niigata 956-0841, Japan
| | - Etsuko Ueta
- School of Health Science, Tottori University Faculty of Medicine , Tottori 683-8503, Japan
| | - Tsuyoshi Ohkura
- Division of Cardiovascular Medicine, Endocrinology, and Metabolism, Department of Molecular Medicine and Therapeutics, Tottori University Faculty of Medicine , Tottori 683-8503, Japan
| | - Kazuhiro Yamamoto
- Division of Cardiovascular Medicine, Endocrinology, and Metabolism, Department of Molecular Medicine and Therapeutics, Tottori University Faculty of Medicine , Tottori 683-8503, Japan
| | - Seiichi Homma
- Institute of Environmental Science for Human Life, Ochanomizu University , Tokyo 112-0012, Japan
| | - Emiko Suzuki
- Institute of Environmental Science for Human Life, Ochanomizu University , Tokyo 112-0012, Japan
| | - Yuzuru Otsuka
- Institute of Environmental Science for Human Life, Ochanomizu University , Tokyo 112-0012, Japan
- Department of Food and Nutrition, Toita Women's College , Tokyo 105-0014, Japan
| |
Collapse
|
43
|
Hellwig M, Witte S, Henle T. Free and Protein-Bound Maillard Reaction Products in Beer: Method Development and a Survey of Different Beer Types. J Agric Food Chem 2016; 64:7234-7243. [PMID: 27594145 DOI: 10.1021/acs.jafc.6b02649] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
The Maillard reaction is important for beer color and flavor, but little is known about the occurrence of individual glycated amino acids in beer. Therefore, seven Maillard reaction products (MRPs), namely, fructosyllysine, maltulosyllysine, pyrraline, formyline, maltosine, MG-H1, and argpyrimidine, were synthesized and quantitated in different types of beer (Pilsner, dark, bock, wheat, and nonalcoholic beers) by HPLC-ESI-MS/MS in the multiple reaction monitoring mode through application of the standard addition method. Free MRPs were analyzed directly. A high molecular weight fraction was isolated by dialysis and hydrolyzed enzymatically prior to analysis. Maltulosyllysine was quantitated for the first time in food. The most important free MRPs in beer are fructosyllysine (6.8-27.0 mg/L) and maltulosyllysine (3.7-21.8 mg/L). Beer contains comparatively high amounts of late-stage free MRPs such as pyrraline (0.2-1.6 mg/L) and MG-H1 (0.3-2.5 mg/L). Minor amounts of formyline (4-230 μg/L), maltosine (6-56 μg/L), and argpyrimidine (0.1-4.1 μg/L) were quantitated. Maltulosyllysine was the most significant protein-bound MRP, but both maltulosyllysine and fructosyllysine represent only 15-60% of the total protein-bound lysine-derived Amadori products. Differences in the patterns of protein-bound and free individual MRPs and the ratios between them were identified, which indicate differences in their chemical, biochemical, and microbiological stabilities during the brewing process.
Collapse
Affiliation(s)
- Michael Hellwig
- Institute of Food Chemistry, Technische Universität Dresden , D-01062 Dresden, Germany
| | - Sophia Witte
- Institute of Food Chemistry, Technische Universität Dresden , D-01062 Dresden, Germany
| | - Thomas Henle
- Institute of Food Chemistry, Technische Universität Dresden , D-01062 Dresden, Germany
| |
Collapse
|
44
|
Kawalkowska J, Quirke AM, Ghari F, Davis S, Subramanian V, Thompson PR, Williams RO, Fischer R, La Thangue NB, Venables PJ. Abrogation of collagen-induced arthritis by a peptidyl arginine deiminase inhibitor is associated with modulation of T cell-mediated immune responses. Sci Rep 2016; 6:26430. [PMID: 27210478 PMCID: PMC4876390 DOI: 10.1038/srep26430] [Citation(s) in RCA: 70] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2016] [Accepted: 05/03/2016] [Indexed: 12/15/2022] Open
Abstract
Proteins containing citrulline, a post-translational modification of arginine, are generated by peptidyl arginine deiminases (PAD). Citrullinated proteins have pro-inflammatory effects in both innate and adaptive immune responses. Here, we examine the therapeutic effects in collagen-induced arthritis of the second generation PAD inhibitor, BB-Cl-amidine. Treatment after disease onset resulted in the reversal of clinical and histological changes of arthritis, associated with a marked reduction in citrullinated proteins in lymph nodes. There was little overall change in antibodies to collagen or antibodies to citrullinated peptides, but a shift from pro-inflammatory Th1 and Th17-type responses to pro-resolution Th2-type responses was demonstrated by serum cytokines and antibody subtypes. In lymph node cells from the arthritic mice treated with BB-Cl-amidine, there was a decrease in total cell numbers but an increase in the proportion of Th2 cells. BB-Cl-amidine had a pro-apoptotic effect on all Th subsets in vitro with Th17 cells appearing to be the most sensitive. We suggest that these immunoregulatory effects of PAD inhibition in CIA are complex, but primarily mediated by transcriptional regulation. We suggest that targeting PADs is a promising strategy for the treatment of chronic inflammatory disease.
Collapse
Affiliation(s)
- Joanna Kawalkowska
- Kennedy Institute, Nuffield Department of Orthopaedics, Rheumatology & Musculoskeletal Sciences, University of Oxford, Roosevelt Drive, Oxford OX3 7FY, UK
| | - Anne-Marie Quirke
- Kennedy Institute, Nuffield Department of Orthopaedics, Rheumatology & Musculoskeletal Sciences, University of Oxford, Roosevelt Drive, Oxford OX3 7FY, UK
| | - Fatemeh Ghari
- Laboratory of Cancer Biology, Department of Oncology, University of Oxford, Old Road Campus Research Building, Roosevelt Drive, Oxford OX3 7DQ, UK
| | - Simon Davis
- Target Discovery Institute, Nuffield Department of Medicine, University of Oxford, Roosevelt Drive, Oxford OX3 7FZ, UK
| | - Venkataraman Subramanian
- Biochemistry and Molecular Pharmacology, University of Massachusetts Medical School, LRB 826, 364 Plantation Street, Worcester, MA, 01605, USA
| | - Paul R. Thompson
- Biochemistry and Molecular Pharmacology, University of Massachusetts Medical School, LRB 826, 364 Plantation Street, Worcester, MA, 01605, USA
| | - Richard O. Williams
- Kennedy Institute, Nuffield Department of Orthopaedics, Rheumatology & Musculoskeletal Sciences, University of Oxford, Roosevelt Drive, Oxford OX3 7FY, UK
| | - Roman Fischer
- Target Discovery Institute, Nuffield Department of Medicine, University of Oxford, Roosevelt Drive, Oxford OX3 7FZ, UK
| | - Nicholas B. La Thangue
- Laboratory of Cancer Biology, Department of Oncology, University of Oxford, Old Road Campus Research Building, Roosevelt Drive, Oxford OX3 7DQ, UK
| | - Patrick J. Venables
- Kennedy Institute, Nuffield Department of Orthopaedics, Rheumatology & Musculoskeletal Sciences, University of Oxford, Roosevelt Drive, Oxford OX3 7FY, UK
| |
Collapse
|
45
|
Antognelli C, Gambelunghe A, Muzi G, Talesa VN. Glyoxalase I drives epithelial-to-mesenchymal transition via argpyrimidine-modified Hsp70, miR-21 and SMAD signalling in human bronchial cells BEAS-2B chronically exposed to crystalline silica Min-U-Sil 5: Transformation into a neoplastic-like phenotype. Free Radic Biol Med 2016; 92:110-125. [PMID: 26784015 DOI: 10.1016/j.freeradbiomed.2016.01.009] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/27/2015] [Revised: 01/12/2016] [Accepted: 01/13/2016] [Indexed: 12/15/2022]
Abstract
Glyoxalase I (Glo1) is the main scavenging enzyme of methylglyoxal (MG), a potent precursor of advanced glycation end products (AGEs). AGEs are known to control multiple biological processes, including epithelial to mesenchymal transition (EMT), a multistep phenomenon associated with cell transformation, playing a major role in a variety of diseases, including cancer. Crystalline silica is a well-known occupational health hazard, responsible for a great number of human pulmonary diseases, such as silicosis. There is still much debate concerning the carcinogenic role of crystalline silica, mainly due to the lack of a causal demonstration between silica exposure and carcinogenesis. It has been suggested that EMT might play a role in crystalline silica-induced lung neoplastic transformation. The aim of this study was to investigate whether, and by means of which mechanism, the antiglycation defence Glo1 is involved in Min-U-Sil 5 (MS5) crystalline silica-induced EMT in BEAS-2B human bronchial epithelial cells chronically exposed, and whether this is associated with the beginning of a neoplastic-like transformation process. By using gene silencing/overexpression and scavenging/inhibitory agents, we demonstrated that MS5 induced hydrogen peroxide-mediated c-Jun-dependent Glo1 up-regulation which resulted in a decrease in the Argpyrimidine-modified Hsp70 protein level which triggered EMT in a novel mechanism involving miR-21 and SMAD signalling. The observed EMT was associated with a neoplastic-like phenotype. The results obtained provide a causal in vitro demonstration of the MS5 pro-carcinogenic transforming role and more importantly they provide new insights into the mechanisms involved in this process, thus opening new paths in research concerning the in vivo study of the carcinogenic potential of crystalline silica.
Collapse
Affiliation(s)
- Cinzia Antognelli
- Department of Experimental Medicine, School of Medicine and Surgery, University of Perugia, Piazzale L. Severi 1, 06129 Perugia, Italy.
| | - Angela Gambelunghe
- Department of Medicine, School of Medicine and Surgery, University of Perugia, Piazzale L. Severi 1, 06129 Perugia, Italy.
| | - Giacomo Muzi
- Department of Medicine, School of Medicine and Surgery, University of Perugia, Piazzale L. Severi 1, 06129 Perugia, Italy.
| | - Vincenzo Nicola Talesa
- Department of Experimental Medicine, School of Medicine and Surgery, University of Perugia, Piazzale L. Severi 1, 06129 Perugia, Italy.
| |
Collapse
|
46
|
Affiliation(s)
- Mark A Ellul
- Institute of Infection and Global Health, University of Liverpool, Liverpool L69 7BE, UK
| | | | - Timothy J Cross
- Department of Gastroenterology, Royal Liverpool University Hospital, Liverpool L7 8XP, UK
| |
Collapse
|
47
|
Bizjak DA, Brinkmann C, Bloch W, Grau M. Increase in Red Blood Cell-Nitric Oxide Synthase Dependent Nitric Oxide Production during Red Blood Cell Aging in Health and Disease: A Study on Age Dependent Changes of Rheologic and Enzymatic Properties in Red Blood Cells. PLoS One 2015; 10:e0125206. [PMID: 25902315 PMCID: PMC4406474 DOI: 10.1371/journal.pone.0125206] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2014] [Accepted: 03/11/2015] [Indexed: 11/18/2022] Open
Abstract
AIM To investigate RBC-NOS dependent NO signaling during in vivo RBC aging in health and disease. METHOD RBC from fifteen healthy volunteers (HC) and four patients with type 2 diabetes mellitus (DM) were separated in seven subpopulations by Percoll density gradient centrifugation. RESULTS The proportion of old RBC was significantly higher in DM compared to HC. In both groups, in vivo aging was marked by changes in RBC shape and decreased cell volume. RBC nitrite, as marker for NO, was higher in DM and increased in both HC and DM during aging. RBC deformability was lower in DM and significantly decreased in old compared to young RBC in both HC and DM. RBC-NOS Serine1177 phosphorylation, indicating enzyme activation, increased during aging in both HC and DM. Arginase I activity remained unchanged during aging in HC. In DM, arginase I activity was significantly higher in young RBC compared to HC but decreased during aging. In HC, concentration of L-arginine, the substrate of RBC-NOS and arginase I, significantly dropped from young to old RBC. In DM, L-arginine concentration was significantly higher in young RBC compared to HC and significantly decreased during aging. In blood from healthy subjects, RBC-NOS activation was additionally inhibited by N5-(1-iminoethyl)-L-Ornithine dihydrochloride which decreased RBC nitrite, and impaired RBC deformability of all but the oldest RBC subpopulation. CONCLUSION This study first-time showed highest RBC-NOS activation and NO production in old RBC, possibly to counteract the negative impact of cell shrinkage on RBC deformability. This was even more pronounced in DM. It is further suggested that highly produced NO only insufficiently affects cell function of old RBC maybe because of isolated RBC-NOS in old RBC thus decreasing NO bioavailability. Thus, increasing NO availability may improve RBC function and may extend cell life span in old RBC.
Collapse
Affiliation(s)
- Daniel Alexander Bizjak
- Department of Molecular and Cellular Sport Medicine, German Sport University Cologne, Cologne, Germany
| | - Christian Brinkmann
- Department of Molecular and Cellular Sport Medicine, German Sport University Cologne, Cologne, Germany
| | - Wilhelm Bloch
- Department of Molecular and Cellular Sport Medicine, German Sport University Cologne, Cologne, Germany
| | - Marijke Grau
- Department of Molecular and Cellular Sport Medicine, German Sport University Cologne, Cologne, Germany
| |
Collapse
|
48
|
|
49
|
Santamarta MT, Llorente J, Mendiguren A, Pineda J. Involvement of neuronal nitric oxide synthase in desensitisation of µ-opioid receptors in the rat locus coeruleus. J Psychopharmacol 2014; 28:903-14. [PMID: 24961237 DOI: 10.1177/0269881114538542] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Nitric oxide (NO) has been recently shown to enhance µ-opioid receptor (MOR) desensitisation in locus coeruleus (LC) neurons. The aim of this study was to evaluate by single-unit extracellular recordings in rat brain slices whether the neuronal NO synthase is involved in MOR desensitisation in LC neurons. As expected, a high concentration of the opioid agonist Met(5)-enkephalin (ME; 10 µM, 10 min) strongly desensitised the inhibition induced by a test application of ME (0.8 µM, 1 min), whereas lower ME concentrations (1 and 3 µM) only weakly desensitised it. The neuronal NO synthase inhibitors 7-nitroindazole (10-100 µM), S-methyl-L-thiocitrulline (0.01-10 µM) and N(ω)-propyl-L-arginine (1-10 µM) attenuated ME (10 µM)-induced opioid desensitisation, although the endothelial NO synthase inhibitor N(5)-(1-iminoethyl)-L-ornithine (3-30 µM) failed to change it. The NO donor sodium nitroprusside (1 mM), but not its inactive analog potassium ferricyanide (1 mM), enhanced the ME (3 µM)-induced desensitisation and prevented the effect of S-methyl-L-thiocitrulline (10 µM). Sodium nitroprusside (1 mM) failed to change the desensitisation of α2-adrenoceptors by noradrenaline (100 µM, 10 min). These results suggest the contribution of NO and a neuronal type of NO synthase in homologous MOR desensitisation in rat LC neurons.
Collapse
Affiliation(s)
- María T Santamarta
- Department of Pharmacology, University of the Basque Country (UPV/EHU), Leioa, Spain
| | - Javier Llorente
- Department of Pharmacology, University of the Basque Country (UPV/EHU), Leioa, Spain
| | - Aitziber Mendiguren
- Department of Pharmacology, University of the Basque Country (UPV/EHU), Leioa, Spain
| | - Joseba Pineda
- Department of Pharmacology, University of the Basque Country (UPV/EHU), Leioa, Spain
| |
Collapse
|
50
|
Wang Y, Hu S, Gabisi AM, Er JAV, Pope A, Burstein G, Schardon CL, Cardounel AJ, Ekmekcioglu S, Fast W. Developing an irreversible inhibitor of human DDAH-1, an enzyme upregulated in melanoma. ChemMedChem 2014; 9:792-7. [PMID: 24574257 PMCID: PMC4311893 DOI: 10.1002/cmdc.201300557] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2013] [Indexed: 01/14/2023]
Abstract
Inhibitors of the human enzyme dimethylarginine dimethylaminohydrolase-1 (DDAH-1) can raise endogenous levels of asymmetric dimethylarginine (ADMA) and lead to a subsequent inhibition of nitric oxide synthesis. In this study, N(5) -(1-imino-2-chloroethyl)-L-ornithine (Cl-NIO) is shown to be a potent time- and concentration-dependent inhibitor of purified human DDAH-1 (KI =1.3±0.6 μM; kinact =0.34±0.07 min(-1) ), with >500-fold selectivity against two arginine-handling enzymes in the same pathway. An activity probe is used to measure the "in cell" IC50 value (6.6±0.2 μM) for Cl-NIO inhibition of DDAH-1 artificially expressed within cultured HEK293T cells. A screen of diverse melanoma cell lines reveals that a striking 50/64 (78 %) of melanoma lines tested showed increased levels of DDAH-1 relative to normal melanocyte control lines. Treatment of the melanoma A375 cell line with Cl-NIO shows a subsequent decrease in cellular nitric oxide production. Cl-NIO is a promising tool for the study of methylarginine-mediated nitric oxide control and a potential therapeutic lead compound for other indications with elevated nitric oxide production, such as septic shock and idiopathic pulmonary fibrosis.
Collapse
Affiliation(s)
- Yun Wang
- Division of Medicinal Chemistry, College of Pharmacy, University of Texas at Austin, 1 University Station, Mail Code C0850; Austin, TX, 78712, USA
| | - Shougang Hu
- Division of Medicinal Chemistry, College of Pharmacy, University of Texas at Austin, 1 University Station, Mail Code C0850; Austin, TX, 78712, USA
| | - Abdul M. Gabisi
- Department of Melanoma Medical Oncology, M.D. Anderson Cancer Center, Houston, TX, 77030
| | - Joyce A. V. Er
- Division of Medicinal Chemistry, College of Pharmacy, University of Texas at Austin, 1 University Station, Mail Code C0850; Austin, TX, 78712, USA
| | - Arthur Pope
- Departments of Internal Medicine and Pharmacology, Ohio State University Medical Center, Columbus, OH 43210, USA
| | - Gayle Burstein
- Department of Biochemistry, College of Natural Sciences, University of Texas at Austin, 1 University Station, Austin TX, 78712, USA
| | - Christopher L. Schardon
- Department of Biochemistry, College of Natural Sciences, University of Texas at Austin, 1 University Station, Austin TX, 78712, USA
| | - Arturo J. Cardounel
- Departments of Internal Medicine and Pharmacology, Ohio State University Medical Center, Columbus, OH 43210, USA
| | - Suhendan Ekmekcioglu
- Department of Melanoma Medical Oncology, M.D. Anderson Cancer Center, Houston, TX, 77030
| | - Walter Fast
- Division of Medicinal Chemistry, College of Pharmacy, University of Texas at Austin, 1 University Station, Mail Code C0850; Austin, TX, 78712, USA
| |
Collapse
|