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Savková K, Danchenko M, Fabianová V, Bellová J, Bencúrová M, Huszár S, Korduláková J, Siváková B, Baráth P, Mikušová K. Compartmentalization of galactan biosynthesis in mycobacteria. J Biol Chem 2024; 300:105768. [PMID: 38367664 PMCID: PMC10951656 DOI: 10.1016/j.jbc.2024.105768] [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: 11/27/2023] [Revised: 01/31/2024] [Accepted: 02/12/2024] [Indexed: 02/19/2024] Open
Abstract
Galactan polymer is a prominent component of the mycobacterial cell wall core. Its biogenesis starts at the cytoplasmic side of the plasma membrane by a build-up of the linker disaccharide [rhamnosyl (Rha) - N-acetyl-glucosaminyl (GlcNAc) phosphate] on the decaprenyl-phosphate carrier. This decaprenyl-P-P-GlcNAc-Rha intermediate is extended by two bifunctional galactosyl transferases, GlfT1 and GlfT2, and then it is translocated to the periplasmic space by an ABC transporter Wzm-Wzt. The cell wall core synthesis is finalized by the action of an array of arabinosyl transferases, mycolyl transferases, and ligases that catalyze an attachment of the arabinogalactan polymer to peptidoglycan through the linker region. Based on visualization of the GlfT2 enzyme fused with fluorescent tags it was proposed that galactan polymerization takes place in a specific compartment of the mycobacterial cell envelope, the intracellular membrane domain, representing pure plasma membrane free of cell wall components (previously denoted as the "PMf" domain), which localizes to the polar region of mycobacteria. In this work, we examined the activity of the galactan-producing cellular machine in the cell-wall containing cell envelope fraction and in the cell wall-free plasma membrane fraction prepared from Mycobacterium smegmatis by the enzyme assays using radioactively labeled substrate UDP-[14C]-galactose as a tracer. We found that despite a high abundance of GlfT2 in both of these fractions as confirmed by their thorough proteomic analyses, galactan is produced only in the reaction mixtures containing the cell wall components. Our findings open the discussion about the distribution of GlfT2 and the regulation of its activity in mycobacteria.
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Affiliation(s)
- Karin Savková
- Department of Biochemistry, Faculty of Natural Sciences, Comenius University in Bratislava, Bratislava, Slovakia
| | - Maksym Danchenko
- Institute of Chemistry, Slovak Academy of Sciences, Bratislava, Slovakia
| | - Viktória Fabianová
- Department of Biochemistry, Faculty of Natural Sciences, Comenius University in Bratislava, Bratislava, Slovakia
| | - Jana Bellová
- Institute of Chemistry, Slovak Academy of Sciences, Bratislava, Slovakia
| | - Mária Bencúrová
- Department of Biochemistry, Faculty of Natural Sciences, Comenius University in Bratislava, Bratislava, Slovakia
| | - Stanislav Huszár
- Department of Biochemistry, Faculty of Natural Sciences, Comenius University in Bratislava, Bratislava, Slovakia
| | - Jana Korduláková
- Department of Biochemistry, Faculty of Natural Sciences, Comenius University in Bratislava, Bratislava, Slovakia
| | - Barbara Siváková
- Institute of Chemistry, Slovak Academy of Sciences, Bratislava, Slovakia
| | - Peter Baráth
- Institute of Chemistry, Slovak Academy of Sciences, Bratislava, Slovakia
| | - Katarína Mikušová
- Department of Biochemistry, Faculty of Natural Sciences, Comenius University in Bratislava, Bratislava, Slovakia.
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2
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Fan D, Wang B, Stelitano G, Savková K, Shi R, Huszár S, Han Q, Mikušová K, Chiarelli LR, Lu Y, Qiao C. Structural and Activity Relationships of 6-Sulfonyl-8-Nitrobenzothiazinones as Antitubercular Agents. J Med Chem 2021; 64:14526-14539. [PMID: 34609861 DOI: 10.1021/acs.jmedchem.1c01049] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The benzothiazinone (BTZ) scaffold compound PBTZ169 kills Mycobacterium tuberculosis by inhibiting the essential flavoenzyme DprE1, consequently blocking the synthesis of the cell wall component arabinans. While extraordinarily potent against M. tuberculosis with a minimum inhibitory concentration (MIC) less than 0.2 ng/mL, its low aqueous solubility and bioavailability issues need to be addressed. Here, we designed and synthesized a series of 6-methanesulfonyl substituted BTZ analogues; further exploration introduced five-member aromatic heterocycles as linkers to attach an aryl group as the side chain. Our work led to the discovery of a number of BTZ derived compounds with potent antitubercular activity. The optimized compounds 6 and 38 exhibited MIC 47 and 30 nM, respectively. Compared to PBTZ169, both compounds displayed increased aqueous solubility and higher stability in human liver microsomes. This study suggested that an alternative side-chain modification strategy could be implemented to improve the druglike properties of the BTZ-based compounds.
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Affiliation(s)
- Dongguang Fan
- College of Pharmaceutical Sciences, Soochow University, 199 Renai Road, Suzhou 215123, P. R. China
| | - Bin Wang
- Beijing Key Laboratory of Drug Resistance Tuberculosis Research, Department of Pharmacology, Beijing Tuberculosis and Thoracic Tumor Research, Beijing Chest Hospital, 97 Ma Chang Street, Beijing 101149, P. R. China
| | - Giovanni Stelitano
- Department of Biology and Biotechnology, University of Pavia, Via Ferrata 9, 27100 Pavia, Italy
| | - Karin Savková
- Department of Biochemistry, Faculty of Natural Sciences, Comenius University in Bratislava, Mlynská dolina, Ilkovičova 6, 842 15 Bratislava, Slovakia
| | - Rui Shi
- College of Pharmaceutical Sciences, Soochow University, 199 Renai Road, Suzhou 215123, P. R. China
| | - Stanislav Huszár
- Department of Biochemistry, Faculty of Natural Sciences, Comenius University in Bratislava, Mlynská dolina, Ilkovičova 6, 842 15 Bratislava, Slovakia
| | - Quanquan Han
- College of Pharmaceutical Sciences, Soochow University, 199 Renai Road, Suzhou 215123, P. R. China
| | - Katarína Mikušová
- Department of Biochemistry, Faculty of Natural Sciences, Comenius University in Bratislava, Mlynská dolina, Ilkovičova 6, 842 15 Bratislava, Slovakia
| | - Laurent R Chiarelli
- Department of Biology and Biotechnology, University of Pavia, Via Ferrata 9, 27100 Pavia, Italy
| | - Yu Lu
- Beijing Key Laboratory of Drug Resistance Tuberculosis Research, Department of Pharmacology, Beijing Tuberculosis and Thoracic Tumor Research, Beijing Chest Hospital, 97 Ma Chang Street, Beijing 101149, P. R. China
| | - Chunhua Qiao
- College of Pharmaceutical Sciences, Soochow University, 199 Renai Road, Suzhou 215123, P. R. China
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3
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Liu L, Kong C, Fumagalli M, Savková K, Xu Y, Huszár S, Sammartino JC, Fan D, Chiarelli LR, Mikušová K, Sun Z, Qiao C. Design, synthesis and evaluation of covalent inhibitors of DprE1 as antitubercular agents. Eur J Med Chem 2020; 208:112773. [PMID: 32898793 DOI: 10.1016/j.ejmech.2020.112773] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2020] [Revised: 08/05/2020] [Accepted: 08/17/2020] [Indexed: 12/14/2022]
Abstract
Decaprenylphosphoryl-β-d-ribose 2'-oxidoreductase (DprE1) is a promising drug target for the development of novel anti-tubercular agents, and inhibitors of DprE1 are being investigated extensively. Among them, the 1,3-benzothiazinone compounds such as BTZ043, and its closer congener, PBTZ169, are undergoing clinical studies. It has been shown that both BTZ compounds are prodrugs, the nitro group is reduced to nitroso first, to which an adjacent Cys387 in the DprE1 binding pocket is covalently bound and results in suicide enzyme inhibition. We figured that replacement of the nitro with an electrophilic warhead would still achieve covalent interaction with nucleophilic Cys387, while the required reductive activation could be circumvented. To test this hypothesis, a number of covalent inhibitors of DprE1 were designed and prepared. The compounds inhibitory potency against DprE1 and anti-tubercular activity were investigated, their chemical reactivity, formation of covalent adduct between the warhead and the enzyme was demonstrated by mass spectrometry.
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Affiliation(s)
- Lingfeng Liu
- College of Pharmaceutical Sciences, Soochow University, 199 Renai Road, Suzhou, 215123, PR China
| | - Chengcheng Kong
- Beijing Key Laboratory of Drug Resistance Tuberculosis Research, Department of Pharmacology, Beijing Tuberculosis and Thoracic Tumor Research Institute, Beijing Chest Hospital, Capital Medical University, 97 Ma Chang Street, Beijing, 101149, PR China
| | - Marco Fumagalli
- Department of Biology and Biotechnology, University of Pavia, Via Ferrata 9, 27100, Pavia, Italy
| | - Karin Savková
- Department of Biochemistry, Faculty of Natural Sciences, Comenius University in Bratislava, Mlynská dolina, Ilkovičova 6, 842 15, Bratislava, Slovakia
| | - Yiwen Xu
- College of Pharmaceutical Sciences, Soochow University, 199 Renai Road, Suzhou, 215123, PR China
| | - Stanislav Huszár
- Department of Biochemistry, Faculty of Natural Sciences, Comenius University in Bratislava, Mlynská dolina, Ilkovičova 6, 842 15, Bratislava, Slovakia
| | - José C Sammartino
- Department of Biology and Biotechnology, University of Pavia, Via Ferrata 9, 27100, Pavia, Italy; University School for Advanced Studies - IUSS Pavia, Piazza Della Vittoria 15, 27100, Pavia, Italy
| | - Dongguang Fan
- College of Pharmaceutical Sciences, Soochow University, 199 Renai Road, Suzhou, 215123, PR China
| | - Laurent R Chiarelli
- Department of Biology and Biotechnology, University of Pavia, Via Ferrata 9, 27100, Pavia, Italy.
| | - Katarína Mikušová
- Department of Biochemistry, Faculty of Natural Sciences, Comenius University in Bratislava, Mlynská dolina, Ilkovičova 6, 842 15, Bratislava, Slovakia.
| | - Zhaogang Sun
- Beijing Key Laboratory of Drug Resistance Tuberculosis Research, Department of Pharmacology, Beijing Tuberculosis and Thoracic Tumor Research Institute, Beijing Chest Hospital, Capital Medical University, 97 Ma Chang Street, Beijing, 101149, PR China.
| | - Chunhua Qiao
- College of Pharmaceutical Sciences, Soochow University, 199 Renai Road, Suzhou, 215123, PR China.
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Huszár S, Chibale K, Singh V. The quest for the holy grail: new antitubercular chemical entities, targets and strategies. Drug Discov Today 2020; 25:772-780. [PMID: 32062007 PMCID: PMC7215093 DOI: 10.1016/j.drudis.2020.02.003] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2019] [Revised: 01/23/2020] [Accepted: 02/07/2020] [Indexed: 12/19/2022]
Abstract
In 2018 1.2 million people died of tuberculosis. The ideal drug candidate should be active against replicating and nonreplicating Mycobacterium tuberculosis. New drug targets such as EfpA, PptT, ClpP, Pks13, DnaN and QcrB have been identified. Tuberculosis drug discovery is advancing with innovative screens.
Tuberculosis (TB) remains the leading cause of death from an infectious disease worldwide. TB therapy is complicated by the protracted treatment regimens, development of resistance coupled with toxicity and insufficient sterilizing capacity of current drugs. Although considerable progress has been made on establishing a TB drug pipeline, the high attrition rate reinforces the need to continually replenish the pipeline with high-quality leads that act through inhibition of novel targets. In this review, we highlight some of the key advances that have assisted TB drug discovery with novel chemical matter, targets and strategies – to fuel the TB drug pipeline.
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Affiliation(s)
- Stanislav Huszár
- Drug Discovery and Development Centre (H3D), University of Cape Town, Rondebosch 7701, South Africa
| | - Kelly Chibale
- Drug Discovery and Development Centre (H3D), University of Cape Town, Rondebosch 7701, South Africa; South African Medical Research Council Drug Discovery and Development Research Unit, Department of Chemistry and Institute of Infectious Disease and Molecular Medicine, University of Cape Town, Rondebosch 7701, South Africa
| | - Vinayak Singh
- Drug Discovery and Development Centre (H3D), University of Cape Town, Rondebosch 7701, South Africa; South African Medical Research Council Drug Discovery and Development Research Unit, Department of Chemistry and Institute of Infectious Disease and Molecular Medicine, University of Cape Town, Rondebosch 7701, South Africa.
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5
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Karabanovich G, Dušek J, Savková K, Pavliš O, Pávková I, Korábečný J, Kučera T, Kočová Vlčková H, Huszár S, Konyariková Z, Konečná K, Jand'ourek O, Stolaříková J, Korduláková J, Vávrová K, Pávek P, Klimešová V, Hrabálek A, Mikušová K, Roh J. Development of 3,5-Dinitrophenyl-Containing 1,2,4-Triazoles and Their Trifluoromethyl Analogues as Highly Efficient Antitubercular Agents Inhibiting Decaprenylphosphoryl-β-d-ribofuranose 2'-Oxidase. J Med Chem 2019; 62:8115-8139. [PMID: 31393122 DOI: 10.1021/acs.jmedchem.9b00912] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
We report herein the discovery of 3,5-dinitrophenyl 1,2,4-triazoles with excellent and selective antimycobacterial activities against Mycobacterium tuberculosis strains, including clinically isolated multidrug-resistant strains. Thorough structure-activity relationship studies of 3,5-dinitrophenyl-containing 1,2,4-triazoles and their trifluoromethyl analogues revealed the key role of the position of the 3,5-dinitrophenyl fragment in the antitubercular efficiency. Among the prepared compounds, the highest in vitro antimycobacterial activities against M. tuberculosis H37Rv and against seven clinically isolated multidrug-resistant strains of M. tuberculosis were found with S-substituted 4-alkyl-5-(3,5-dinitrophenyl)-4H-1,2,4-triazole-3-thiols and their 3-nitro-5-(trifluoromethyl)phenyl analogues. The minimum inhibitory concentrations of these compounds reached 0.03 μM, which is superior to all the current first-line anti-tuberculosis drugs. Furthermore, almost all compounds with excellent antimycobacterial activities exhibited very low in vitro cytotoxicities against two proliferating mammalian cell lines. The docking study indicated that these compounds acted as the inhibitors of decaprenylphosphoryl-β-d-ribofuranose 2'-oxidase enzyme, which was experimentally confirmed by two independent radiolabeling experiments.
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Affiliation(s)
- Galina Karabanovich
- Faculty of Pharmacy in Hradec Králové , Charles University , Akademika Heyrovského 1203 , 50005 Hradec Králové , Czech Republic
| | - Jan Dušek
- Faculty of Pharmacy in Hradec Králové , Charles University , Akademika Heyrovského 1203 , 50005 Hradec Králové , Czech Republic
| | - Karin Savková
- Faculty of Natural Sciences, Department of Biochemistry , Comenius University in Bratislava , Mlynská Dolina, Ilkovičova 6 , 842 15 Bratislava , Slovakia
| | - Oto Pavliš
- Biological Defense Department , Military Health Institute , 561 64 Techonin , Czech Republic
| | - Ivona Pávková
- Faculty of Military Health Sciences , University of Defence , Třebešská 1575 , 50005 Hradec Králové , Czech Republic
| | - Jan Korábečný
- Faculty of Military Health Sciences , University of Defence , Třebešská 1575 , 50005 Hradec Králové , Czech Republic.,Biomedical Research Center , University Hospital Hradec Králové , Sokolska 581 , 500 05 Hradec Králové , Czech Republic
| | - Tomáš Kučera
- Faculty of Military Health Sciences , University of Defence , Třebešská 1575 , 50005 Hradec Králové , Czech Republic
| | - Hana Kočová Vlčková
- Faculty of Pharmacy in Hradec Králové , Charles University , Akademika Heyrovského 1203 , 50005 Hradec Králové , Czech Republic
| | - Stanislav Huszár
- Faculty of Natural Sciences, Department of Biochemistry , Comenius University in Bratislava , Mlynská Dolina, Ilkovičova 6 , 842 15 Bratislava , Slovakia
| | - Zuzana Konyariková
- Faculty of Natural Sciences, Department of Biochemistry , Comenius University in Bratislava , Mlynská Dolina, Ilkovičova 6 , 842 15 Bratislava , Slovakia
| | - Klára Konečná
- Faculty of Pharmacy in Hradec Králové , Charles University , Akademika Heyrovského 1203 , 50005 Hradec Králové , Czech Republic
| | - Ondřej Jand'ourek
- Faculty of Pharmacy in Hradec Králové , Charles University , Akademika Heyrovského 1203 , 50005 Hradec Králové , Czech Republic
| | - Jiřina Stolaříková
- Department of Bacteriology and Mycology , Regional Institute of Public Health , Partyzánské náměstí 7 , 70200 Ostrava , Czech Republic
| | - Jana Korduláková
- Faculty of Natural Sciences, Department of Biochemistry , Comenius University in Bratislava , Mlynská Dolina, Ilkovičova 6 , 842 15 Bratislava , Slovakia
| | - Kateřina Vávrová
- Faculty of Pharmacy in Hradec Králové , Charles University , Akademika Heyrovského 1203 , 50005 Hradec Králové , Czech Republic
| | - Petr Pávek
- Faculty of Pharmacy in Hradec Králové , Charles University , Akademika Heyrovského 1203 , 50005 Hradec Králové , Czech Republic
| | - Věra Klimešová
- Faculty of Pharmacy in Hradec Králové , Charles University , Akademika Heyrovského 1203 , 50005 Hradec Králové , Czech Republic
| | - Alexandr Hrabálek
- Faculty of Pharmacy in Hradec Králové , Charles University , Akademika Heyrovského 1203 , 50005 Hradec Králové , Czech Republic
| | - Katarína Mikušová
- Faculty of Natural Sciences, Department of Biochemistry , Comenius University in Bratislava , Mlynská Dolina, Ilkovičova 6 , 842 15 Bratislava , Slovakia
| | - Jaroslav Roh
- Faculty of Pharmacy in Hradec Králové , Charles University , Akademika Heyrovského 1203 , 50005 Hradec Králové , Czech Republic
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6
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Mori G, Orena BS, Franch C, Mitchenall LA, Godbole AA, Rodrigues L, Aguilar-Pérez C, Zemanová J, Huszár S, Forbak M, Lane TR, Sabbah M, Deboosere N, Frita R, Vandeputte A, Hoffmann E, Russo R, Connell N, Veilleux C, Jha RK, Kumar P, Freundlich JS, Brodin P, Aínsa JA, Nagaraja V, Maxwell A, Mikušová K, Pasca MR, Ekins S. The EU approved antimalarial pyronaridine shows antitubercular activity and synergy with rifampicin, targeting RNA polymerase. Tuberculosis (Edinb) 2018; 112:98-109. [PMID: 30205975 DOI: 10.1016/j.tube.2018.08.004] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2018] [Revised: 08/03/2018] [Accepted: 08/05/2018] [Indexed: 12/19/2022]
Abstract
The search for compounds with biological activity for many diseases is turning increasingly to drug repurposing. In this study, we have focused on the European Union-approved antimalarial pyronaridine which was found to have in vitro activity against Mycobacterium tuberculosis (MIC 5 μg/mL). In macromolecular synthesis assays, pyronaridine resulted in a severe decrease in incorporation of 14C-uracil and 14C-leucine similar to the effect of rifampicin, a known inhibitor of M. tuberculosis RNA polymerase. Surprisingly, the co-administration of pyronaridine (2.5 μg/ml) and rifampicin resulted in in vitro synergy with an MIC 0.0019-0.0009 μg/mL. This was mirrored in a THP-1 macrophage infection model, with a 16-fold MIC reduction for rifampicin when the two compounds were co-administered versus rifampicin alone. Docking pyronaridine in M. tuberculosis RNA polymerase suggested the potential for it to bind outside of the RNA polymerase rifampicin binding pocket. Pyronaridine was also found to have activity against a M. tuberculosis clinical isolate resistant to rifampicin, and when combined with rifampicin (10% MIC) was able to inhibit M. tuberculosis RNA polymerase in vitro. All these findings, and in particular the synergistic behavior with the antitubercular rifampicin, inhibition of RNA polymerase in combination in vitro and its current use as a treatment for malaria, may suggest that pyronaridine could also be used as an adjunct for treatment against M. tuberculosis infection. Future studies will test potential for in vivo synergy, clinical utility and attempt to develop pyronaridine analogs with improved potency against M. tuberculosis RNA polymerase when combined with rifampicin.
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Affiliation(s)
- Giorgia Mori
- Department of Biology and Biotechnology "Lazzaro Spallanzani", University of Pavia, 27100 Pavia, Italy
| | - Beatrice Silvia Orena
- Department of Biology and Biotechnology "Lazzaro Spallanzani", University of Pavia, 27100 Pavia, Italy
| | - Clara Franch
- Department of Biological Chemistry, John Innes Centre, Norwich Research Park, Norwich NR4 7UH, UK
| | - Lesley A Mitchenall
- Department of Biological Chemistry, John Innes Centre, Norwich Research Park, Norwich NR4 7UH, UK
| | - Adwait Anand Godbole
- Department of Microbiology and Cell Biology, Indian Institute of Science, Bangalore 560012, India
| | - Liliana Rodrigues
- Departamento de Microbiología, Facultad de Medicina, and BIFI, Universidad de Zaragoza, and IIS-Aragón, 50009 Zaragoza, Spain; CIBER Enfermedades Respiratorias (CIBERES), Instituto de Salud Carlos III, Spain; Fundación ARAID, Zaragoza, Spain
| | - Clara Aguilar-Pérez
- Departamento de Microbiología, Facultad de Medicina, and BIFI, Universidad de Zaragoza, and IIS-Aragón, 50009 Zaragoza, Spain; CIBER Enfermedades Respiratorias (CIBERES), Instituto de Salud Carlos III, Spain
| | - Júlia Zemanová
- Department of Biochemistry, Faculty of Natural Sciences, Comenius University in Bratislava, Mlynská dolina, Ilkovičova 6, 84215, Bratislava, Slovakia
| | - Stanislav Huszár
- Department of Biochemistry, Faculty of Natural Sciences, Comenius University in Bratislava, Mlynská dolina, Ilkovičova 6, 84215, Bratislava, Slovakia
| | - Martin Forbak
- Department of Biochemistry, Faculty of Natural Sciences, Comenius University in Bratislava, Mlynská dolina, Ilkovičova 6, 84215, Bratislava, Slovakia
| | - Thomas R Lane
- Collaborations Pharmaceuticals, Inc., 840 Main Campus Drive, Lab 3510, Raleigh, NC 27606, USA
| | - Mohamad Sabbah
- Department of Chemistry, University of Cambridge, Lensfield Rd, Cambridge, CB2 1EW, UK
| | - Nathalie Deboosere
- Univ Lille, CNRS, INSERM, CHU Lille, Institut Pasteur de Lille, U1019 - UMR 8204 - CIIL - Center for Infection and Immunity of Lille, 1 rue du Professeur Calmette, 59000 Lille, France
| | - Rosangela Frita
- Univ Lille, CNRS, INSERM, CHU Lille, Institut Pasteur de Lille, U1019 - UMR 8204 - CIIL - Center for Infection and Immunity of Lille, 1 rue du Professeur Calmette, 59000 Lille, France
| | - Alexandre Vandeputte
- Univ Lille, CNRS, INSERM, CHU Lille, Institut Pasteur de Lille, U1019 - UMR 8204 - CIIL - Center for Infection and Immunity of Lille, 1 rue du Professeur Calmette, 59000 Lille, France
| | - Eik Hoffmann
- Univ Lille, CNRS, INSERM, CHU Lille, Institut Pasteur de Lille, U1019 - UMR 8204 - CIIL - Center for Infection and Immunity of Lille, 1 rue du Professeur Calmette, 59000 Lille, France
| | - Riccardo Russo
- Division of Infectious Disease, Department of Medicine and the Ruy V. Lourenço Center for the Study of Emerging and Re-emerging Pathogens, Rutgers University - New Jersey Medical School, Newark, NJ 07103, USA
| | - Nancy Connell
- Division of Infectious Disease, Department of Medicine and the Ruy V. Lourenço Center for the Study of Emerging and Re-emerging Pathogens, Rutgers University - New Jersey Medical School, Newark, NJ 07103, USA
| | - Courtney Veilleux
- Division of Infectious Disease, Department of Medicine and the Ruy V. Lourenço Center for the Study of Emerging and Re-emerging Pathogens, Rutgers University - New Jersey Medical School, Newark, NJ 07103, USA
| | - Rajiv K Jha
- Department of Microbiology and Cell Biology, Indian Institute of Science, Bangalore 560012, India
| | - Pradeep Kumar
- Division of Infectious Disease, Department of Medicine and the Ruy V. Lourenço Center for the Study of Emerging and Re-emerging Pathogens, Rutgers University - New Jersey Medical School, Newark, NJ 07103, USA
| | - Joel S Freundlich
- Division of Infectious Disease, Department of Medicine and the Ruy V. Lourenço Center for the Study of Emerging and Re-emerging Pathogens, Rutgers University - New Jersey Medical School, Newark, NJ 07103, USA; Department of Pharmacology, Physiology, and Neuroscience, Rutgers University - New Jersey Medical School, Newark, NJ, 07103, USA
| | - Priscille Brodin
- Univ Lille, CNRS, INSERM, CHU Lille, Institut Pasteur de Lille, U1019 - UMR 8204 - CIIL - Center for Infection and Immunity of Lille, 1 rue du Professeur Calmette, 59000 Lille, France
| | - Jose Antonio Aínsa
- Departamento de Microbiología, Facultad de Medicina, and BIFI, Universidad de Zaragoza, and IIS-Aragón, 50009 Zaragoza, Spain; CIBER Enfermedades Respiratorias (CIBERES), Instituto de Salud Carlos III, Spain
| | - Valakunja Nagaraja
- Department of Microbiology and Cell Biology, Indian Institute of Science, Bangalore 560012, India; Jawaharlal Nehru Centre for Advanced Scientific Research, Bangalore 560064, India
| | - Anthony Maxwell
- Department of Biological Chemistry, John Innes Centre, Norwich Research Park, Norwich NR4 7UH, UK
| | - Katarína Mikušová
- Department of Biochemistry, Faculty of Natural Sciences, Comenius University in Bratislava, Mlynská dolina, Ilkovičova 6, 84215, Bratislava, Slovakia
| | - Maria Rosalia Pasca
- Department of Biology and Biotechnology "Lazzaro Spallanzani", University of Pavia, 27100 Pavia, Italy
| | - Sean Ekins
- Collaborations Pharmaceuticals, Inc., 840 Main Campus Drive, Lab 3510, Raleigh, NC 27606, USA; Collaborative Drug Discovery, 1633 Bayshore Highway, Suite 342, Burlingame, CA 94403, USA.
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7
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Salina EG, Huszár S, Zemanová J, Keruchenko J, Riabova O, Kazakova E, Grigorov A, Azhikina T, Kaprelyants A, Mikušová K, Makarov V. Copper-related toxicity in replicating and dormantMycobacterium tuberculosiscaused by 1-hydroxy-5-R-pyridine-2(1H)-thiones. Metallomics 2018; 10:992-1002. [DOI: 10.1039/c8mt00067k] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
1-Hydroxy-5-R-pyridine-2(1H)-thiones are novel copper-dependentM. tuberculosisinhibitors that provide intracellular accumulation of toxic concentrations of copper.
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Affiliation(s)
- Elena G. Salina
- Bach Institute of Biochemistry
- Research Center of Biotechnology of the Russian Academy of Sciences
- Moscow
- Russia
| | - Stanislav Huszár
- Comenius University in Bratislava
- Faculty of Natural Sciences
- Department of Biochemistry
- 84215 Bratislava
- Slovak Republic
| | - Júlia Zemanová
- Comenius University in Bratislava
- Faculty of Natural Sciences
- Department of Biochemistry
- 84215 Bratislava
- Slovak Republic
| | - Jan Keruchenko
- Bach Institute of Biochemistry
- Research Center of Biotechnology of the Russian Academy of Sciences
- Moscow
- Russia
| | - Olga Riabova
- Bach Institute of Biochemistry
- Research Center of Biotechnology of the Russian Academy of Sciences
- Moscow
- Russia
| | - Elena Kazakova
- Bach Institute of Biochemistry
- Research Center of Biotechnology of the Russian Academy of Sciences
- Moscow
- Russia
| | | | - Tatyana Azhikina
- Shemyakin and Ovchinnikov Institute of Bioorganic Chemistry
- Russian Academy of Sciences
- Moscow
- Russian Federation
| | - Arseny Kaprelyants
- Bach Institute of Biochemistry
- Research Center of Biotechnology of the Russian Academy of Sciences
- Moscow
- Russia
| | - Katarína Mikušová
- Comenius University in Bratislava
- Faculty of Natural Sciences
- Department of Biochemistry
- 84215 Bratislava
- Slovak Republic
| | - Vadim Makarov
- Bach Institute of Biochemistry
- Research Center of Biotechnology of the Russian Academy of Sciences
- Moscow
- Russia
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8
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Esposito M, Szadocka S, Degiacomi G, Orena BS, Mori G, Piano V, Boldrin F, Zemanová J, Huszár S, Barros D, Ekins S, Lelièvre J, Manganelli R, Mattevi A, Pasca MR, Riccardi G, Ballell L, Mikušová K, Chiarelli LR. A Phenotypic Based Target Screening Approach Delivers New Antitubercular CTP Synthetase Inhibitors. ACS Infect Dis 2017; 3:428-437. [PMID: 28475832 DOI: 10.1021/acsinfecdis.7b00006] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Despite its great potential, the target-based approach has been mostly unsuccessful in tuberculosis drug discovery, while whole cell phenotypic screening has delivered several active compounds. However, for many of these hits, the cellular target has not yet been identified, thus preventing further target-based optimization of the compounds. In this context, the newly validated drug target CTP synthetase PyrG was exploited to assess a target-based approach of already known, but untargeted, antimycobacterial compounds. To this purpose the publically available GlaxoSmithKline antimycobacterial compound set was assayed, uncovering a series of 4-(pyridin-2-yl)thiazole derivatives which efficiently inhibit the Mycobacterium tuberculosis PyrG enzyme activity, one of them showing low activity against the human CTP synthetase. The three best compounds were ATP binding site competitive inhibitors, with Ki values ranging from 3 to 20 μM, but did not show any activity against a small panel of different prokaryotic and eukaryotic kinases, thus demonstrating specificity for the CTP synthetases. Metabolic labeling experiments demonstrated that the compounds directly interfere not only with CTP biosynthesis, but also with other CTP dependent biochemical pathways, such as lipid biosynthesis. Moreover, using a M. tuberculosis pyrG conditional knock-down strain, it was shown that the activity of two compounds is dependent on the intracellular concentration of the CTP synthetase. All these results strongly suggest a role of PyrG as a target of these compounds, thus strengthening the value of this kind of approach for the identification of new scaffolds for drug development.
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Affiliation(s)
- Marta Esposito
- Department
of Biology and Biotechnology “Lazzaro Spallanzani”, University of Pavia, via Ferrata 9, 27100 Pavia, Italy
| | - Sára Szadocka
- Department
of Biochemistry, Faculty of Natural Sciences, Comenius University in Bratislava, Mlynská dolina CH1, 84215 Bratislava, Slovakia
| | - Giulia Degiacomi
- Department
of Molecular Medicine, University of Padova, via Gabelli 63, 35121 Padova, Italy
| | - Beatrice S. Orena
- Department
of Biology and Biotechnology “Lazzaro Spallanzani”, University of Pavia, via Ferrata 9, 27100 Pavia, Italy
| | - Giorgia Mori
- Department
of Biology and Biotechnology “Lazzaro Spallanzani”, University of Pavia, via Ferrata 9, 27100 Pavia, Italy
| | - Valentina Piano
- Department
of Biology and Biotechnology “Lazzaro Spallanzani”, University of Pavia, via Ferrata 9, 27100 Pavia, Italy
| | - Francesca Boldrin
- Department
of Molecular Medicine, University of Padova, via Gabelli 63, 35121 Padova, Italy
| | - Júlia Zemanová
- Department
of Biochemistry, Faculty of Natural Sciences, Comenius University in Bratislava, Mlynská dolina CH1, 84215 Bratislava, Slovakia
| | - Stanislav Huszár
- Department
of Biochemistry, Faculty of Natural Sciences, Comenius University in Bratislava, Mlynská dolina CH1, 84215 Bratislava, Slovakia
| | - David Barros
- Diseases
of the Developing World, GlaxoSmithKline, Calle Severo Ochoa 2, 28760 Tres Cantos, Madrid, Spain
| | - Sean Ekins
- Collaborative Drug Discovery Inc., 1633 Bayshore Highway, Suite 342, Burlingame, California 94010, United States
| | - Joel Lelièvre
- Diseases
of the Developing World, GlaxoSmithKline, Calle Severo Ochoa 2, 28760 Tres Cantos, Madrid, Spain
| | - Riccardo Manganelli
- Department
of Molecular Medicine, University of Padova, via Gabelli 63, 35121 Padova, Italy
| | - Andrea Mattevi
- Department
of Biology and Biotechnology “Lazzaro Spallanzani”, University of Pavia, via Ferrata 9, 27100 Pavia, Italy
| | - Maria Rosalia Pasca
- Department
of Biology and Biotechnology “Lazzaro Spallanzani”, University of Pavia, via Ferrata 9, 27100 Pavia, Italy
| | - Giovanna Riccardi
- Department
of Biology and Biotechnology “Lazzaro Spallanzani”, University of Pavia, via Ferrata 9, 27100 Pavia, Italy
| | - Lluis Ballell
- Diseases
of the Developing World, GlaxoSmithKline, Calle Severo Ochoa 2, 28760 Tres Cantos, Madrid, Spain
| | - Katarína Mikušová
- Department
of Biochemistry, Faculty of Natural Sciences, Comenius University in Bratislava, Mlynská dolina CH1, 84215 Bratislava, Slovakia
| | - Laurent R. Chiarelli
- Department
of Biology and Biotechnology “Lazzaro Spallanzani”, University of Pavia, via Ferrata 9, 27100 Pavia, Italy
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9
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Brecik M, Centárová I, Mukherjee R, Kolly GS, Huszár S, Bobovská A, Kilacsková E, Mokošová V, Svetlíková Z, Šarkan M, Neres J, Korduláková J, Cole ST, Mikušová K. DprE1 Is a Vulnerable Tuberculosis Drug Target Due to Its Cell Wall Localization. ACS Chem Biol 2015; 10:1631-6. [PMID: 25906160 DOI: 10.1021/acschembio.5b00237] [Citation(s) in RCA: 101] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The flavo-enzyme DprE1 catalyzes a key epimerization step in the decaprenyl-phosphoryl d-arabinose (DPA) pathway, which is essential for mycobacterial cell wall biogenesis and targeted by several new tuberculosis drug candidates. Here, using differential radiolabeling with DPA precursors and high-resolution fluorescence microscopy, we disclose the unexpected extracytoplasmic localization of DprE1 and periplasmic synthesis of DPA. Collectively, this explains the vulnerability of DprE1 and the remarkable potency of the best inhibitors.
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Affiliation(s)
- Miroslav Brecik
- Department
of Biochemistry, Faculty of Natural Sciences, Comenius University in Bratislava, 842 15 Bratislava, Slovakia
| | - Ivana Centárová
- Department
of Biochemistry, Faculty of Natural Sciences, Comenius University in Bratislava, 842 15 Bratislava, Slovakia
| | - Raju Mukherjee
- Global
Health Institute, Ecole Polytechnique Fédérale de Lausanne, 1015 Lausanne, Switzerland
| | - Gaëlle S. Kolly
- Global
Health Institute, Ecole Polytechnique Fédérale de Lausanne, 1015 Lausanne, Switzerland
| | - Stanislav Huszár
- Department
of Biochemistry, Faculty of Natural Sciences, Comenius University in Bratislava, 842 15 Bratislava, Slovakia
| | - Adela Bobovská
- Department
of Biochemistry, Faculty of Natural Sciences, Comenius University in Bratislava, 842 15 Bratislava, Slovakia
| | - Emöke Kilacsková
- Department
of Biochemistry, Faculty of Natural Sciences, Comenius University in Bratislava, 842 15 Bratislava, Slovakia
| | - Veronika Mokošová
- Department
of Biochemistry, Faculty of Natural Sciences, Comenius University in Bratislava, 842 15 Bratislava, Slovakia
| | - Zuzana Svetlíková
- Department
of Biochemistry, Faculty of Natural Sciences, Comenius University in Bratislava, 842 15 Bratislava, Slovakia
| | - Michal Šarkan
- Department
of Biochemistry, Faculty of Natural Sciences, Comenius University in Bratislava, 842 15 Bratislava, Slovakia
| | - João Neres
- Global
Health Institute, Ecole Polytechnique Fédérale de Lausanne, 1015 Lausanne, Switzerland
| | - Jana Korduláková
- Department
of Biochemistry, Faculty of Natural Sciences, Comenius University in Bratislava, 842 15 Bratislava, Slovakia
| | - Stewart T. Cole
- Global
Health Institute, Ecole Polytechnique Fédérale de Lausanne, 1015 Lausanne, Switzerland
| | - Katarína Mikušová
- Department
of Biochemistry, Faculty of Natural Sciences, Comenius University in Bratislava, 842 15 Bratislava, Slovakia
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10
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Ferencz V, Huszár S, Horváth C, Mészáros S, Fromhercz A, Hegeds B, Kinda I, Krunity X, Verebes A, Mihalovics L, Pávai P, Pivoda T, Sárosi K, Lukovics T, Lakatos I, Bors K. Rééducation en internat ou en externat chez les patients ostéoporotiques après fracture de hanche. Ann Phys Rehabil Med 2013. [DOI: 10.1016/j.rehab.2013.07.458] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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11
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Ferencz V, Huszár S, Horváth C, Mészáros S, Fromhercz A, Hegeds B, Kinda I, Krunity X, Verebes A, Mihalovics L, Pávai P, Pivoda T, Sárosi K, Lukovics T, Lakatos I, Bors K. Inpatient and outpatient rehabilitation among osteoporotic patients with hip fracture. Ann Phys Rehabil Med 2013. [DOI: 10.1016/j.rehab.2013.07.465] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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12
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Fébel H, Huszár S, Harczi IZ. Effects of dietary protein and carbohydrate source on rumen fermentation and nutrient flow in sheep. Acta Vet Hung 2001; 48:161-71. [PMID: 11402698] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/20/2023]
Abstract
The effects of decreasing levels of rumen degradable protein (RDP) and nonstructural carbohydrate (NSC) (Diet 1: 74% RDP and 38% NSC; Diet 2: 57% RDP and 32% NSC; Diet 3: 48% RDP and 23% NSC) were studied in cannulated sheep. Total volatile fatty acid (VFA) content rose in response to increasing NSC content. The molar ratio of acetate to propionate was the narrowest for Diet 1. Ruminal concentrations of ammonia and urea increased in response to the rising level of RDP. Flow of organic matter (OM) to the duodenum was increased for Diet 3, which resulted in the lowest apparent and true ruminal digestion of OM. Duodenal flow of total nitrogen (N) increased as RDP content decreased. The highest quantity of undegraded feed protein in duodenal digesta was measured in sheep fed Diet 3. Microbial N flow and microbial efficiency were unaffected by the diets. These results indicate that an NSC level lower than 25% and an RDP content lower than 50% did not exert any negative effect on microbial N production. This phenomenon supports the theory that if the level of RDP is lowered with a concomitant decrease in NSC, uncoupled fermentation cannot be observed.
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Affiliation(s)
- H Fébel
- Research Institute of Animal Breeding and Nutrition, H-2053 Herceghalom, Hungary.
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13
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Abstract
The intestinal absorption of trivalent and hexavalent chromium (Cr) given orally (experiment I) or infused in the intestine (experiment II) was investigated in rats. The nonabsorbable form of chromium (51Cr2O3) and water-soluble and more absorbable Na2(51)CrO4 (the hexavalent form of Cr) were compared. Total retention of chromium given orally ranged around 15 percent of the dose, regardless of the chromium compounds applied. The absorption rate of chromic oxide, which is considered a nonabsorbable compound, was 14.4 as a percentage of chromium intake. This result indicates that some loss of chromium has to be taken into account in metabolic trials made by the indicator method. In isolated rat intestine, from the injected Cr 2.5% of chromic oxide and 43.2% of sodium chromate were absorbed during an hour (experiment II). The absorbed chromium was transferred to the liver where the liver tissue retained 10.9% of chromic oxide and 51.1% of sodium chromate. Radioactivity of v. cava caudalis following intestinal injection of Na2CrO4 was thirtyfold greater than after Cr2O3 dosing. This phenomenon can be explained by the lower blood clearance of chromate. Different absorption rate of chromate depending on the route of administration could be due to the fact that the hexavalent form given orally was reduced to Cr3+ in the acidic environment of the stomach. When Na2CrO4 was infused directly in the intestine of rats, such reduction could not occur. This means that the acidic gastric juice might play a role in inhibiting the intestinal absorption of Na2CrO4 when this compound is given orally.
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Affiliation(s)
- H Fébel
- Research Institute of Animal Breeding and Nutrition, H-2053 Herceghalom, Hungary.
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14
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Szelényi-Galátai M, Fébel H, Szegedi B, Zsolnai-Harczi I, Huszár S. Evaluation of the digestibility of nutrients in pigs by ileal cannulation technique. Acta Vet Hung 1996; 44:411-32. [PMID: 9141278] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
A simple T-cannula was surgically inserted into the ileum of growing female Large White x Dutch Landrace swine. Chymus samples collected with the help of the cannula were analysed to determine the apparent digestibility of different dietary nutrients such as dry matter, crude protein and starch, as well as of some essential amino acids. The following three experiments were conducted: (I) of the cereals, the "Tewo" triticale variety fed alone and in 1:1 concentrate mixtures with wheat or maize was studied; (II) waxy maize hybrids and maize hybrids of normal endosperm were compared without treatment and after treatment by the Bocchi technology; (III) untreated and extruded maize supplemented either with extracted soybean or with extracted sunflower was also tested. The ileal digestibility of protein, amino acids and starch was determined and compared with values obtained by conventional (faecal) analysis. When feeding triticale alone or in combination with wheat or maize, the ileal digestibility of crude protein and amino acids increased as a result of feeding the cereal combinations (e.g. crude protein 72-79%, lysine 75-79%, threonine 63-78%, methionine 74-86%). Comparison of the two maize hybrids revealed that, with the exception of methionine, lysine and tyrosine, the amino acids of the waxy hybrid had higher ileal digestibility. Treatment of the normal hybrid by the Bocchi technology caused a significant improvement in the ileal digestibility of cystine, isoleucine, lysine, valine, and dry matter. This treatment also improved the faecal digestibility of all test nutrients but methionine. Bocchi treatment of the waxy hybrid significantly improved the ileal digestibility of isoleucine, leucine, methionine, tyrosine and valine, and the faecal digestibility of cystine, dry matter, and crude protein. No major variety- or treatment-related differences were found in the digestibility of starch. As a result of extrusion, the digestibility of nutrients of the soybean + maize mixture increased from 61.6% to 70.3% (crude protein), from 41.1% to 59.4% (threonine), from 60.1 to 72.0% (methionine), and from 70.7% to 82.7% (lysine). The same treatment of the sunflower + maize mixture increased the digestibility of crude protein from 80.6% to 84.5%, that of threonine from 78.1% to 80.6%, that of methionine from 79.7% to 84.3%, while that of lysine from 61.4% to 72.3%. The ileal digestibility of starch was 97-98% for both mixtures. As a result of extrusion, most of the faecal digestibility values showed a significant improvement for both the soybean- and the sunflower-containing mixtures. The favourable effect exerted by extrusion on the digestibility of nutrients is markedly influenced by the feed components.
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Affiliation(s)
- M Szelényi-Galátai
- Research Institute for Animal Breeding and Nutrition, Herceghalom, Hungary
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