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Rima M, Oueslati S, Cotelon G, Creton E, Bonnin RA, Dortet L, Iorga BI, Naas T. Role of amino acid 159 in carbapenem and temocillin hydrolysis of OXA-933, a novel OXA-48 variant. Antimicrob Agents Chemother 2024; 68:e0018024. [PMID: 38526049 PMCID: PMC11064584 DOI: 10.1128/aac.00180-24] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2024] [Accepted: 02/26/2024] [Indexed: 03/26/2024] Open
Abstract
OXA-48 has rapidly disseminated worldwide and become one of the most common carbapenemases in many countries with more than 45 variants reported with, in some cases, significant differences in their hydrolysis profiles. The R214 residue, located in the ß5-ß6 loop, is crucial for the carbapenemase activity, as it stabilizes carbapenems in the active site and maintains the shape of the active site through interactions with D159. In this study, we have characterized a novel variant of OXA-48, OXA-933 with a single D159N change. To evaluate the importance of this residue, point mutations were generated (D159A, D159G, D159K, and D159W), kinetic parameters of OXA-933, OXA-48 D159G, and OXA-48 D159K were determined and compared to those of OXA-48 and OXA-244. The blaOXA-933 gene was borne on Tn2208, a 2,696-bp composite transposon made of two IS1 elements surrounded by 9 bp target site duplications and inserted into a non-self-transmissible plasmid pOXA-933 of 7,872 bp in size. Minimal inhibitory concentration values of E. coli expressing the blaOXA-933 gene or of its point mutant derivatives were lower for carbapenems (except for D159G) as compared to those expressing the blaOXA-48 gene. Steady-state kinetic parameters revealed lower catalytic efficiencies for expanded spectrum cephalosporins and carbapenems. A detailed structural analysis confirmed the crucial role of D159 in shaping the active site of OXA-48 enzymes by interacting with R214. Our work further illustrates the remarkable propensity of OXA-48-like carbapenemases to evolve through mutations at positions outside the β5-β6 loop, but interacting with key residues of it.
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Affiliation(s)
- Mariam Rima
- Team ReSIST, INSERM U1184, School of Medicine Université Paris-Saclay, LabEx LERMIT, Le Kremlin-Bicêtre, France
| | - Saoussen Oueslati
- Team ReSIST, INSERM U1184, School of Medicine Université Paris-Saclay, LabEx LERMIT, Le Kremlin-Bicêtre, France
- Bacteriology-Hygiene Unit, Assistance Publique/Hôpitaux de Paris, Bicêtre Hospital, Le Kremlin-Bicêtre, France
| | - Garance Cotelon
- French National Reference Center for Antibiotic Resistance: Carbapenemase-Producing Enterobacterales, Le Kremlin-Bicêtre, France
| | - Elodie Creton
- French National Reference Center for Antibiotic Resistance: Carbapenemase-Producing Enterobacterales, Le Kremlin-Bicêtre, France
| | - Rémy A. Bonnin
- Team ReSIST, INSERM U1184, School of Medicine Université Paris-Saclay, LabEx LERMIT, Le Kremlin-Bicêtre, France
- French National Reference Center for Antibiotic Resistance: Carbapenemase-Producing Enterobacterales, Le Kremlin-Bicêtre, France
| | - Laurent Dortet
- Team ReSIST, INSERM U1184, School of Medicine Université Paris-Saclay, LabEx LERMIT, Le Kremlin-Bicêtre, France
- Bacteriology-Hygiene Unit, Assistance Publique/Hôpitaux de Paris, Bicêtre Hospital, Le Kremlin-Bicêtre, France
- French National Reference Center for Antibiotic Resistance: Carbapenemase-Producing Enterobacterales, Le Kremlin-Bicêtre, France
| | - Bogdan I. Iorga
- Université Paris-Saclay, CNRS UPR 2301, Institut de Chimie des Substances Naturelles, Gif-sur-Yvette, France
| | - Thierry Naas
- Team ReSIST, INSERM U1184, School of Medicine Université Paris-Saclay, LabEx LERMIT, Le Kremlin-Bicêtre, France
- Bacteriology-Hygiene Unit, Assistance Publique/Hôpitaux de Paris, Bicêtre Hospital, Le Kremlin-Bicêtre, France
- French National Reference Center for Antibiotic Resistance: Carbapenemase-Producing Enterobacterales, Le Kremlin-Bicêtre, France
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Liu Y, Zhang R, Wang B, Song S, Zhang F. Evaluation of penicillin-resistance and probiotic traits in Lactobacillus plantarum during laboratory evolution. Gene 2024; 891:147823. [PMID: 37741594 DOI: 10.1016/j.gene.2023.147823] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2023] [Revised: 06/29/2023] [Accepted: 09/20/2023] [Indexed: 09/25/2023]
Abstract
The aim of this study was to obtain the Lactobacillus plantarum ATCC14917 with high-level resistance to penicillin and evaluate their probiotic traits using laboratory evolution assay and whole-genome sequencing. In penicillin environment, the minimum inhibitory concentration (MIC) of L. plantarum to penicillin increased from 1 μg/mL to 16 μg/mL and remained stable after the removal of antibiotic pressure, suggesting that the resistance acquisition to penicillin was an irreversible process. Subsequently, change of probiotic characteristics was further evaluated, and the results showed that the acid tolerance, bile tolerance and adhesion ability were significantly declined in the highly resistant strains. Whole-genome sequencing indicated that genes encoding hypothetical protein, LPXTG-motif cell wall anchor domain protein and acetyltransferase were detected in highly resistant L. plantarum, and these genes were still present after the following subculture in the absence of penicillin, suggesting that these three mutants might be the main reason for the development of penicillin resistance. The homology-based analysis of surrounding DNA regions of mutant genes was further performed and indicated that no resistant genes were located on mobile elements in evolved L. plantarum strains, signifying that the spread of antibiotic resistance genes in the gut would not occur for these mutant genes. This study provided a basis for the combined use of highly resistant L. plantarum and penicillin in the treatment of pathogen induced gut diseases.
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Affiliation(s)
- Yufang Liu
- College of Food Engineering and Nutritional Science, Shaanxi Normal University, Xi'an City, Shaanxi Province, China
| | - Rueyue Zhang
- College of Food Engineering and Nutritional Science, Shaanxi Normal University, Xi'an City, Shaanxi Province, China
| | - Bini Wang
- College of Food Engineering and Nutritional Science, Shaanxi Normal University, Xi'an City, Shaanxi Province, China
| | - Shuanghong Song
- National Engineering Laboratory for Resource Developing of Endangered Chinese Crude Drugs in Northwest of China, College of Life Sciences, Shaanxi Normal University, Xi'an City, Shaanxi Province, China
| | - Fuxin Zhang
- College of Food Engineering and Nutritional Science, Shaanxi Normal University, Xi'an City, Shaanxi Province, China.
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Liu X, Wang X, Zhou F, Xue Y, Liu C. Genomic insights into Penicillium chrysogenum adaptation to subseafloor sedimentary environments. BMC Genomics 2024; 25:4. [PMID: 38166640 PMCID: PMC10759354 DOI: 10.1186/s12864-023-09921-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2023] [Accepted: 12/17/2023] [Indexed: 01/05/2024] Open
Abstract
BACKGROUND Penicillium chrysogenum is a filamentous fungal species with diverse habitats, yet little is known about its genetics in adapting to extreme subseafloor sedimental environments. RESULTS Here, we report the discovery of P. chrysogenum strain 28R-6-F01, isolated from deep coal-bearing sediments 2306 m beneath the seafloor. This strain possesses exceptional characteristics, including the ability to thrive in extreme conditions such as high temperature (45 °C), high pressure (35 Mpa), and anaerobic environments, and exhibits broad-spectrum antimicrobial activity, producing the antibiotic penicillin at a concentration of 358 μg/mL. Genome sequencing and assembly revealed a genome size of 33.19 Mb with a GC content of 48.84%, containing 6959 coding genes. Comparative analysis with eight terrestrial strains identified 88 unique genes primarily associated with penicillin and aflatoxins biosynthesis, carbohydrate degradation, viral resistance, and three secondary metabolism gene clusters. Furthermore, significant expansions in gene families related to DNA repair were observed, likely linked to the strain's adaptation to its environmental niche. CONCLUSIONS Our findings provide insights into the genomic and biological characteristics of P. chrysogenum adaptation to extreme anaerobic subseafloor sedimentary environments, such as high temperature and pressure.
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Affiliation(s)
- Xuan Liu
- State Key Laboratory of Pharmaceutical Biotechnology, Nanjing University, Nanjing, 210023, China
| | - Xinran Wang
- State Key Laboratory of Pharmaceutical Biotechnology, Nanjing University, Nanjing, 210023, China
| | - Fan Zhou
- State Key Laboratory of Pharmaceutical Biotechnology, Nanjing University, Nanjing, 210023, China
| | - Yarong Xue
- State Key Laboratory of Pharmaceutical Biotechnology, Nanjing University, Nanjing, 210023, China
| | - Changhong Liu
- State Key Laboratory of Pharmaceutical Biotechnology, Nanjing University, Nanjing, 210023, China.
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Huang LD, Gou XY, Yang MJ, Li MJ, Chen SN, Yan J, Liu XX, Sun AH. Peptidoglycan biosynthesis-associated enzymatic kinetic characteristics and β-lactam antibiotic inhibitory effects of different Streptococcus pneumoniae penicillin-binding proteins. Int J Biol Macromol 2024; 254:127784. [PMID: 37949278 DOI: 10.1016/j.ijbiomac.2023.127784] [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: 05/24/2023] [Revised: 09/15/2023] [Accepted: 10/28/2023] [Indexed: 11/12/2023]
Abstract
Penicillin-binding proteins (PBPs) include transpeptidases, carboxypeptidases, and endopeptidases for biosynthesis of peptidoglycans in the cell wall to maintain bacterial morphology and survival in the environment. Streptococcus pneumoniae expresses six PBPs, but their enzymatic kinetic characteristics and inhibitory effects on different β-lactam antibiotics remain poorly understood. In this study, all the six recombinant PBPs of S. pneumoniae displayed transpeptidase activity with different substrate affinities (Km = 1.56-9.11 mM) in a concentration-dependent manner, and rPBP3 showed a greater catalytic efficiency (Kcat = 2.38 s-1) than the other rPBPs (Kcat = 3.20-7.49 × 10-2 s-1). However, only rPBP3 was identified as a carboxypeptidase (Km = 8.57 mM and Kcat = 2.57 s-1). None of the rPBPs exhibited endopeptidase activity. Penicillin and cefotaxime inhibited the transpeptidase and carboxypeptidase activity of all the rPBPs but imipenem did not inhibited the enzymatic activities of rPBP3. Except for the lack of binding of imipenem to rPBP3, penicillin, cefotaxime, and imipenem bound to all the other rPBPs (KD = 3.71-9.35 × 10-4 M). Sublethal concentrations of penicillin, cefotaxime, and imipenem induced a decrease of pneumococcal pbps-mRNA levels (p < 0.05). These results indicated that all six PBPs of S. pneumoniae are transpeptidases, while only PBP3 is a carboxypeptidase. Imipenem has no inhibitory effect on pneumococcal PBP3. The pneumococcal genes for encoding endopeptidases remain to be determined.
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Affiliation(s)
- Li-Dan Huang
- School of Basic Medical Sciences and Forensic Medicine, Hangzhou Medical College, Hangzhou, Zhejiang 310053, PR China; Yiwu Central Blood Station, Yiwu, Zhejiang 322000, PR China
| | - Xiao-Yu Gou
- School of Basic Medical Sciences and Forensic Medicine, Hangzhou Medical College, Hangzhou, Zhejiang 310053, PR China
| | - Mei-Juan Yang
- School of Basic Medical Sciences and Forensic Medicine, Hangzhou Medical College, Hangzhou, Zhejiang 310053, PR China; The First Hospital of Putian City, Putian, Fujian 351100, PR China
| | - Meng-Jie Li
- School of Basic Medical Sciences and Forensic Medicine, Hangzhou Medical College, Hangzhou, Zhejiang 310053, PR China
| | - Sui-Ning Chen
- School of Basic Medical Sciences and Forensic Medicine, Hangzhou Medical College, Hangzhou, Zhejiang 310053, PR China
| | - Jie Yan
- Zhejiang University School of Medicine, Hangzhou, Zhejiang 310058, PR China
| | - Xiao-Xiang Liu
- School of Basic Medical Sciences and Forensic Medicine, Hangzhou Medical College, Hangzhou, Zhejiang 310053, PR China.
| | - Ai-Hua Sun
- School of Basic Medical Sciences and Forensic Medicine, Hangzhou Medical College, Hangzhou, Zhejiang 310053, PR China.
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Niu C, Liu G, Yang S, He L, Liu C, Zheng F, Wang J, Li Q. Enhanced expression of a novel trypsin from Streptomyces fradiae in Komagataella phaffii GS115 through combinational strategies of propeptide engineering and self-degredation sites modification. Int J Biol Macromol 2024; 254:127382. [PMID: 37838138 DOI: 10.1016/j.ijbiomac.2023.127382] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2023] [Revised: 09/09/2023] [Accepted: 10/09/2023] [Indexed: 10/16/2023]
Abstract
This study aimed to enhance the expression level of a novel trypsin gene from Streptomyces fradiae ATCC14544 in Komagataella phaffii GS115 through the combinational use of propeptide engineering and self-degradation residues modification strategies. An artificial propeptide consisted of thioredoxin TrxA, the bovine propeptide DDDDK and the hydrophobic peptide FVEF was introduced to replace the original propeptide while the self-degradation residue sites were predicted and analyzed through alanine screening. The results showed that the quantity and enzymatic activity of asft with engineered propeptide reached 47.02 mg/mL and 33.9 U/mL, which were 9.6 % and 59.29 % higher than those of wild-type (42.9 mg/mL and 13.8 U/mL). Moreover, the introduction of R295A/R315A mutation further enhanced the enzymatic activity (58.86 U/mL) and obviously alleviated the phenomena of self-degradation. The tolerance of trypsin towards alkaline environment was also improved since the optimal pH was shifted from pH 9.0 to pH 9.5 and the half-life value at pH 10 was significantly extended. Finally, the fermentation media composition and condition were optimized and trypsin activity in optimal condition reached 160.58 U/mL, which was 2.73-fold and 11.64-fold of that before optimization or before engineering. The results obtained in this study indicated that the combinational use of propeptide engineering and self-degradation sites modification might have great potential application in production of active trypsins.
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Affiliation(s)
- Chengtuo Niu
- Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi 214122, China; Lab of Brewing Science and Technology, School of Biotechnology, Jiangnan University, Wuxi 214122, China
| | - Guozheng Liu
- School of Biotechnology, Jiangnan University, Wuxi 214122, China
| | - Shijing Yang
- Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi 214122, China; Lab of Brewing Science and Technology, School of Biotechnology, Jiangnan University, Wuxi 214122, China
| | - Linman He
- Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi 214122, China; Lab of Brewing Science and Technology, School of Biotechnology, Jiangnan University, Wuxi 214122, China
| | - Chunfeng Liu
- Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi 214122, China; Lab of Brewing Science and Technology, School of Biotechnology, Jiangnan University, Wuxi 214122, China
| | - Feiyun Zheng
- Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi 214122, China; Lab of Brewing Science and Technology, School of Biotechnology, Jiangnan University, Wuxi 214122, China
| | - Jinjing Wang
- Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi 214122, China; Lab of Brewing Science and Technology, School of Biotechnology, Jiangnan University, Wuxi 214122, China
| | - Qi Li
- Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi 214122, China; Lab of Brewing Science and Technology, School of Biotechnology, Jiangnan University, Wuxi 214122, China.
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Ozcan M, Kabaklı SC, Alkaya B, Isler SC, Turer OU, Oksuz H, Haytac MC. The impact of local and systemic penicillin on antimicrobial properties and growth factor release in platelet-rich fibrin: In vitro study. Clin Oral Investig 2023; 28:61. [PMID: 38157066 DOI: 10.1007/s00784-023-05428-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2023] [Accepted: 11/20/2023] [Indexed: 01/03/2024]
Abstract
OBJECTIVE This study evaluates the impact of local and systemic administration of penicillin on the antimicrobial properties and growth factors of platelet-rich fibrin (PRF) under in vitro conditions. MATERIALS AND METHODS The study involved 12 volunteers. Four tubes of venous blood were collected before systemic antibiotic administration. Two tubes were centrifuged at 2700 RPM for 12 min to obtain PRF, while 0.2 ml of penicillin was locally added into other two tubes. After systemic administration, blood samples were again collected and subjected to centrifugation. The release of growth factors (IGF-1, PDGF, FGF-2, and TGFβ-1) was determined using the Enzyme-Linked Immunosorbent Assay (ELISA), and an antibiotic sensitivity test was performed for S. aureus and E. coli bacteria. RESULTS Results showed that local antibiotic addition before PRF centrifugation had a significant antimicrobial effect without affecting growth factor releases. There was no statistically significant difference in antimicrobial properties between PRF prepared with systemic antibiotic administration and PRF prepared without antibiotics. MATERIALS AND METHODS The study suggests that incorporating localized antibiotics into PRF results in strong antimicrobial effects without compromise of growth factor release. However, the combination of PRF with systemic antibiotics did not significantly enhance its antimicrobial properties compared to PRF prepared without antibiotics. CLINICAL RELEVANCE Local addition of penicillin into PRF provides strong antimicrobial properties which may help reduce dependence on systemic antibiotic regimens, mitigating antibiotic resistance and minimizing associated side effects.
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Affiliation(s)
- Mustafa Ozcan
- Department of Periodontology, Faculty of Dentistry, Cukurova University, Adana, Turkey.
| | - Seda Ciritci Kabaklı
- Department of Periodontology, Faculty of Dentistry, Cukurova University, Adana, Turkey
| | - Bahar Alkaya
- Department of Periodontology, Faculty of Dentistry, Cukurova University, Adana, Turkey
| | - Sıla Cagrı Isler
- Department of Periodontology, School of Dental Medicine, Bern University, Bern, Switzerland
- Department of Periodontology, Faculty of Dentistry, Gazi University, Ankara, Turkey
| | - Onur Ucak Turer
- Department of Periodontology, Faculty of Dentistry, Cukurova University, Adana, Turkey
| | - Hale Oksuz
- Department of Medical Biology, Faculty of Medicine, Cukurova University, Adana, Turkey
| | - Mehmet Cenk Haytac
- Department of Periodontology, Faculty of Dentistry, Cukurova University, Adana, Turkey
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Yamazaki D, Maeyama Y, Tabata T. Combinatory Actions of Co-transmitters in Dopaminergic Systems Modulate Drosophila Olfactory Memories. J Neurosci 2023; 43:8294-8305. [PMID: 37429719 PMCID: PMC10711700 DOI: 10.1523/jneurosci.2152-22.2023] [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: 11/20/2022] [Revised: 04/30/2023] [Accepted: 05/27/2023] [Indexed: 07/12/2023] Open
Abstract
Dopamine neurons (DANs) are extensively studied in the context of associative learning, in both vertebrates and invertebrates. In the acquisition of male and female Drosophila olfactory memory, the PAM cluster of DANs provides the reward signal, and the PPL1 cluster of DANs sends the punishment signal to the Kenyon cells (KCs) of mushroom bodies, the center for memory formation. However, thermo-genetical activation of the PPL1 DANs after memory acquisition impaired aversive memory, and that of the PAM DANs impaired appetitive memory. We demonstrate that the knockdown of glutamate decarboxylase, which catalyzes glutamate conversion to GABA in PAM DANs, potentiated the appetitive memory. In addition, the knockdown of glutamate transporter in PPL1 DANs potentiated aversive memory, suggesting that GABA and glutamate co-transmitters act in an inhibitory manner in olfactory memory formation. We also found that, in γKCs, the Rdl receptor for GABA and the mGluR DmGluRA mediate the inhibition. Although multiple-spaced training is required to form long-term aversive memory, a single cycle of training was sufficient to develop long-term memory when the glutamate transporter was knocked down, in even a single subset of PPL1 DANs. Our results suggest that the mGluR signaling pathway may set a threshold for memory acquisition to allow the organisms' behaviors to adapt to changing physiological conditions and environments.SIGNIFICANCE STATEMENT In the acquisition of olfactory memory in Drosophila, the PAM cluster of dopamine neurons (DANs) mediates the reward signal, while the PPL1 cluster of DANs conveys the punishment signal to the Kenyon cells of the mushroom bodies, which serve as the center for memory formation. We found that GABA co-transmitters in the PAM DANs and glutamate co-transmitters in the PPL1 DANs inhibit olfactory memory formation. Our findings demonstrate that long-term memory acquisition, which typically necessitates multiple-spaced training sessions to establish aversive memory, can be triggered with a single training cycle in cases where the glutamate co-transmission is inhibited, even within a single subset of PPL1 DANs, suggesting that the glutamate co-transmission may modulate the threshold for memory acquisition.
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Affiliation(s)
- Daisuke Yamazaki
- Institute of Quantitative Biosciences, The University of Tokyo, Tokyo, 113-0032, Japan
| | - Yuko Maeyama
- Institute of Quantitative Biosciences, The University of Tokyo, Tokyo, 113-0032, Japan
| | - Tetsuya Tabata
- Institute of Quantitative Biosciences, The University of Tokyo, Tokyo, 113-0032, Japan
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Chen J, Lei Y, Wen J, Zheng Y, Gan X, Liang Q, Huang C, Song Y. The neurodevelopmental toxicity induced by combined exposure of nanoplastics and penicillin in embryonic zebrafish: The role of aging processes. Environ Pollut 2023; 335:122281. [PMID: 37516295 DOI: 10.1016/j.envpol.2023.122281] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/16/2023] [Revised: 07/22/2023] [Accepted: 07/27/2023] [Indexed: 07/31/2023]
Abstract
As ubiquitous contaminants, nanoplastics and antibiotics are frequently co-presence and widely detected in the freshwater environment and biota, posing a high co-exposure risk to aquatic organisms and even humans. More importantly, how the aging process of nanoplastics affects the joint toxic potential of nanoplastics and antibiotics has not been explored. Here, we generated two aged polystyrene nanoplastics (PS) by UV radiation (UV-PS) and ozonation (O3-PS). Non-teratogenic concentrations of pristine PS (80 nm) and antibiotics penicillin (PNC) co-exposure synergistically suppressed the embryo heart beating and behaviors of spontaneous movement, touch response, and larval swimming behavioral response. Pristine PS and aged UV-PS, but not aged O3-PS, showed similar effects on zebrafish embryo/larval neurodevelopment. However, when co-exposure with PNC, both aged PS, but not pristine PS, showed antagonistic effects. In late-stage juvenile social behavior testing, we found that PS decreased the exploration in light/dark preference assay. The synergistic effect of aged PS with PNC was further explored, including cellular apoptosis, ROS formation, and neurotransmitter metabolite regulation. Mechanistically, aged UV-PS but not O3-PS significantly increased the adsorption rate of PNC compared to pristine PS, which may account for the toxicity difference between the two aged PS. In conclusion, our results confirmed that PS served as a carrier for PNC, and the environmental aging process changed their neurobehavioral toxicity pattern in vivo.
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Affiliation(s)
- Jiangfei Chen
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, PR China; Zhejiang Provincial Key Laboratory of Watershed Sciences and Health, Wenzhou Medical University, Wenzhou, 325035, PR China
| | - Yuhang Lei
- Zhejiang Provincial Key Laboratory of Watershed Sciences and Health, Wenzhou Medical University, Wenzhou, 325035, PR China
| | - Jing Wen
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, PR China
| | - Yi Zheng
- Zhejiang Provincial Key Laboratory of Watershed Sciences and Health, Wenzhou Medical University, Wenzhou, 325035, PR China
| | - Xiufeng Gan
- Zhejiang Provincial Key Laboratory of Watershed Sciences and Health, Wenzhou Medical University, Wenzhou, 325035, PR China
| | - Qiuju Liang
- Zhejiang Provincial Key Laboratory of Watershed Sciences and Health, Wenzhou Medical University, Wenzhou, 325035, PR China
| | - Changjiang Huang
- Zhejiang Provincial Key Laboratory of Watershed Sciences and Health, Wenzhou Medical University, Wenzhou, 325035, PR China
| | - Yang Song
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, PR China.
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Kobras CM, Monteith W, Somerville S, Delaney JM, Khan I, Brimble C, Corrigan RM, Sheppard SK, Fenton AK. Loss of Pde1 function acts as an evolutionary gateway to penicillin resistance in Streptococcus pneumoniae. Proc Natl Acad Sci U S A 2023; 120:e2308029120. [PMID: 37796984 PMCID: PMC10576035 DOI: 10.1073/pnas.2308029120] [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: 05/14/2023] [Accepted: 09/05/2023] [Indexed: 10/07/2023] Open
Abstract
Streptococcus pneumoniae is a major human pathogen and rising resistance to β-lactam antibiotics, such as penicillin, is a significant threat to global public health. Mutations occurring in the penicillin-binding proteins (PBPs) can confer high-level penicillin resistance but other poorly understood genetic factors are also important. Here, we combined strictly controlled laboratory experiments and population analyses to identify a new penicillin resistance pathway that is independent of PBP modification. Initial laboratory selection experiments identified high-frequency pde1 mutations conferring S. pneumoniae penicillin resistance. The importance of variation at the pde1 locus was confirmed in natural and clinical populations in an analysis of >7,200 S. pneumoniae genomes. The pde1 mutations identified by these approaches reduce the hydrolytic activity of the Pde1 enzyme in bacterial cells and thereby elevate levels of cyclic-di-adenosine monophosphate and penicillin resistance. Our results reveal rapid de novo loss of function mutations in pde1 as an evolutionary gateway conferring low-level penicillin resistance. This relatively simple genomic change allows cells to persist in populations on an adaptive evolutionary pathway to acquire further genetic changes and high-level penicillin resistance.
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Affiliation(s)
- Carolin M. Kobras
- School for Biosciences, Florey Institute for Host-Pathogen Interactions, University of Sheffield, SheffieldS10 2TN, United Kingdom
| | - William Monteith
- Department of Biology, Ineos Oxford Institute for Antimicrobial Research, University of Oxford, OxfordOX1 3SZ, United Kingdom
| | - Sophie Somerville
- School for Biosciences, Florey Institute for Host-Pathogen Interactions, University of Sheffield, SheffieldS10 2TN, United Kingdom
| | - James M. Delaney
- School for Biosciences, Florey Institute for Host-Pathogen Interactions, University of Sheffield, SheffieldS10 2TN, United Kingdom
| | - Imran Khan
- School for Biosciences, Florey Institute for Host-Pathogen Interactions, University of Sheffield, SheffieldS10 2TN, United Kingdom
| | - Camilla Brimble
- School for Biosciences, Florey Institute for Host-Pathogen Interactions, University of Sheffield, SheffieldS10 2TN, United Kingdom
| | - Rebecca M. Corrigan
- School for Biosciences, Florey Institute for Host-Pathogen Interactions, University of Sheffield, SheffieldS10 2TN, United Kingdom
| | - Samuel K. Sheppard
- Department of Biology, Ineos Oxford Institute for Antimicrobial Research, University of Oxford, OxfordOX1 3SZ, United Kingdom
| | - Andrew K. Fenton
- School for Biosciences, Florey Institute for Host-Pathogen Interactions, University of Sheffield, SheffieldS10 2TN, United Kingdom
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10
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Bertonha AF, Silva CCL, Shirakawa KT, Trindade DM, Dessen A. Penicillin-binding protein (PBP) inhibitor development: A 10-year chemical perspective. Exp Biol Med (Maywood) 2023; 248:1657-1670. [PMID: 38030964 PMCID: PMC10723023 DOI: 10.1177/15353702231208407] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2023] Open
Abstract
Bacterial cell wall formation is essential for cellular survival and morphogenesis. The peptidoglycan (PG), a heteropolymer that surrounds the bacterial membrane, is a key component of the cell wall, and its multistep biosynthetic process is an attractive antibacterial development target. Penicillin-binding proteins (PBPs) are responsible for cross-linking PG stem peptides, and their central role in bacterial cell wall synthesis has made them the target of successful antibiotics, including β-lactams, that have been used worldwide for decades. Following the discovery of penicillin, several other compounds with antibiotic activity have been discovered and, since then, have saved millions of lives. However, since pathogens inevitably become resistant to antibiotics, the search for new active compounds is continuous. The present review highlights the ongoing development of inhibitors acting mainly in the transpeptidase domain of PBPs with potential therapeutic applications for the development of new antibiotic agents. Both the critical aspects of the strategy, design, and structure-activity relationships (SAR) are discussed, covering the main published articles over the last 10 years. Some of the molecules described display activities against main bacterial pathogens and could open avenues toward the development of new, efficient antibacterial drugs.
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Affiliation(s)
- Ariane F Bertonha
- Brazilian Biosciences National Laboratory (LNBio), CNPEM, Campinas 13084-971, Brazil
| | - Caio C L Silva
- Brazilian Biosciences National Laboratory (LNBio), CNPEM, Campinas 13084-971, Brazil
| | - Karina T Shirakawa
- Brazilian Biosciences National Laboratory (LNBio), CNPEM, Campinas 13084-971, Brazil
- Departamento de Genética, Evolução, Microbiologia e Imunologia, Instituto de Biologia, Universidade Estadual de Campinas (UNICAMP), Campinas 13083-862, Brazil
| | - Daniel M Trindade
- Brazilian Biosciences National Laboratory (LNBio), CNPEM, Campinas 13084-971, Brazil
| | - Andréa Dessen
- Brazilian Biosciences National Laboratory (LNBio), CNPEM, Campinas 13084-971, Brazil
- Univ. Grenoble Alpes, CNRS, CEA, Institut de Biologie Structurale (IBS), F-38044 Grenoble, France
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11
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Fan JY, Dama G, Liu YL, Guo WY, Lin JT. [Combinational Overexpression of Foxa3 and Hnf4α Enhance the Proliferation and Prolong the Functional Maintenance of Primary Hepatocytes]. Mol Biol (Mosk) 2023; 57:668-670. [PMID: 37528786 DOI: 10.31857/s0026898423040031, edn: qkqquw] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2022] [Accepted: 12/06/2022] [Indexed: 08/03/2023]
Abstract
In an in vitro culture system, primary hepatocytes usually display a low proliferation capacity, accompanied with a decrease of viability and a loss of hepatocyte-specific functions. Previous studies have demonstrated that the combination introductions of certain hepatocyte-specific transcription factors are able to convert fibroblasts into functional hepatocyte-like cells. However, such combinational usage of transcription factors in primary hepatocytes culture has not yet sufficiently studied. The forkhead box protein A3 (FoxA3) and hepatocyte nuclear factor 4α (Hnf4α) are liver-enriched transcription factors that play vital roles in the differentiation, and maintenance of hepatocytes. Thus, we simultaneously overexpressed the two genes, Foxa3 and Hnf4α, in rat hepatocytes and observed that the combinational augmentation of these two transcription factors have enhanced the proliferation and stabilized the hepatocyte-specific functions of primary hepatocytes over a long-term culture period.
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Affiliation(s)
- J Y Fan
- Stem Cell and Biotherapy Engineering Research Center of Henan, Henan Joint International Research Laboratory of Stem Cell Medicine, Xinxiang Medical University, Xinxiang, 453003 China
- College of Life Science and Technology, Xinxiang Medical University, Henan, Xinxiang, 453003 China
- Shandong Tianchuan Precision Medical Technology Co. Ltd., Dezhou, 253084 China
| | - G Dama
- Stem Cell and Biotherapy Engineering Research Center of Henan, Henan Joint International Research Laboratory of Stem Cell Medicine, Xinxiang Medical University, Xinxiang, 453003 China
- Department of Community Health, Advanced Medical and Dental Institute, Universiti Sains Malaysia, Kepala Batas, 13200 Malaysia
| | - Y L Liu
- Stem Cell and Biotherapy Engineering Research Center of Henan, Henan Joint International Research Laboratory of Stem Cell Medicine, Xinxiang Medical University, Xinxiang, 453003 China
- College of Life Science and Technology, Xinxiang Medical University, Henan, Xinxiang, 453003 China
| | - W Y Guo
- College of Life Science and Technology, Xinxiang Medical University, Henan, Xinxiang, 453003 China
| | - J T Lin
- Stem Cell and Biotherapy Engineering Research Center of Henan, Henan Joint International Research Laboratory of Stem Cell Medicine, Xinxiang Medical University, Xinxiang, 453003 China
- College of Life Science and Technology, Xinxiang Medical University, Henan, Xinxiang, 453003 China
- College of Biomedical Engineering, Xinxiang Medical University, Henan, Xinxiang, 453003 China
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12
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Field D, Fernandez de Ullivarri M, Ross RP, Hill C. After a century of nisin research - where are we now? FEMS Microbiol Rev 2023; 47:fuad023. [PMID: 37300874 PMCID: PMC10257480 DOI: 10.1093/femsre/fuad023] [Citation(s) in RCA: 11] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2023] [Revised: 05/08/2023] [Accepted: 05/10/2023] [Indexed: 05/13/2023] Open
Abstract
It is almost a century since nisin was discovered in fermented milk cultures, coincidentally in the same year that penicillin was first described. Over the last 100 years this small, highly modified pentacyclic peptide has not only found success in the food industry as a preservative but has also served as the paradigm for our understanding of the genetic organization, expression, and regulation of genes involved in lantibiotic biosynthesis-one of the few cases of extensive post-translation modification in prokaryotes. Recent developments in understanding the complex biosynthesis of nisin have shed light on the cellular location of the modification and transport machinery and the co-ordinated series of spatio-temporal events required to produce active nisin and provide resistance and immunity. The continued unearthing of new natural variants from within human and animal gastrointestinal tracts has sparked interest in the potential application of nisin to influence the microbiome, given the growing recognition of the role the gastrointestinal microbiota plays in health and disease. Moreover, interdisciplinary approaches have taken advantage of biotechnological advancements to bioengineer nisin to produce novel variants and expand nisin functionality for applications in the biomedical field. This review will discuss the latest progress in these aspects of nisin research.
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Affiliation(s)
- Des Field
- APC Microbiome Ireland, University College Cork,Western Road, Cork T12 YN60, Ireland
- School of Microbiology, University College Cork, College Road, Cork T12 YT20, Ireland
| | | | - R Paul Ross
- APC Microbiome Ireland, University College Cork,Western Road, Cork T12 YN60, Ireland
- School of Microbiology, University College Cork, College Road, Cork T12 YT20, Ireland
| | - Colin Hill
- APC Microbiome Ireland, University College Cork,Western Road, Cork T12 YN60, Ireland
- School of Microbiology, University College Cork, College Road, Cork T12 YT20, Ireland
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13
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Lu S, Montoya M, Hu L, Neetu N, Sankaran B, Prasad BVV, Palzkill T. Mutagenesis and structural analysis reveal the CTX-M β-lactamase active site is optimized for cephalosporin catalysis and drug resistance. J Biol Chem 2023; 299:104630. [PMID: 36963495 PMCID: PMC10139949 DOI: 10.1016/j.jbc.2023.104630] [Citation(s) in RCA: 2] [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: 09/28/2022] [Revised: 03/17/2023] [Accepted: 03/19/2023] [Indexed: 03/26/2023] Open
Abstract
CTX-M β-lactamases are a widespread source of resistance to β-lactam antibiotics in Gram-negative bacteria. These enzymes readily hydrolyze penicillins and cephalosporins, including oxyimino-cephalosporins such as cefotaxime. To investigate the preference of CTX-M enzymes for cephalosporins, we examined eleven active-site residues in the CTX-M-14 β-lactamase model system by alanine mutagenesis to assess the contribution of the residues to catalysis and specificity for the hydrolysis of the penicillin, ampicillin, and the cephalosporins cephalothin and cefotaxime. Key active site residues for class A β-lactamases, including Lys73, Ser130, Asn132, Lys234, Thr216, and Thr235, contribute significantly to substrate binding and catalysis of penicillin and cephalosporin substrates in that alanine substitutions decrease both kcat and kcat/KM. A second group of residues, including Asn104, Tyr105, Asn106, Thr215, and Thr216, contribute only to substrate binding, with the substitutions decreasing only kcat/KM. Importantly, calculating the average effect of a substitution across the 11 active-site residues shows that the most significant impact is on cefotaxime hydrolysis while ampicillin hydrolysis is least affected, suggesting the active site is highly optimized for cefotaxime catalysis. Furthermore, we determined X-ray crystal structures for the apo-enzymes of the mutants N106A, S130A, N132A, N170A, T215A, and T235A. Surprisingly, in the structures of some mutants, particularly N106A and T235A, the changes in structure propagate from the site of substitution to other regions of the active site, suggesting that the impact of substitutions is due to more widespread changes in structure and illustrating the interconnected nature of the active site.
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Affiliation(s)
- Shuo Lu
- Department of Pharmacology and Chemical Biology, Baylor College of Medicine, Houston, Texas, USA
| | - Miranda Montoya
- Department of Pharmacology and Chemical Biology, Baylor College of Medicine, Houston, Texas, USA
| | - Liya Hu
- Department of Biochemistry and Molecular Biology, Baylor College of Medicine, Houston, Texas, USA
| | - Neetu Neetu
- Department of Biochemistry and Molecular Biology, Baylor College of Medicine, Houston, Texas, USA
| | - Banumathi Sankaran
- Department of Molecular Biophysics and Integrated Bioimaging, Berkeley Center for Structural Biology, Lawrence Berkeley National Laboratory, Berkeley, California, USA
| | - B V Venkataram Prasad
- Department of Biochemistry and Molecular Biology, Baylor College of Medicine, Houston, Texas, USA
| | - Timothy Palzkill
- Department of Pharmacology and Chemical Biology, Baylor College of Medicine, Houston, Texas, USA; Department of Biochemistry and Molecular Biology, Baylor College of Medicine, Houston, Texas, USA.
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14
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Abstract
The title of this essay is as much a question as it is a statement. The discovery of the β-lactam antibiotics-including penicillins, cephalosporins, and carbapenems-as largely (if not exclusively) secondary metabolites of terrestrial fungi and bacteria, transformed modern medicine. The antibiotic β-lactams inactivate essential enzymes of bacterial cell-wall biosynthesis. Moreover, the ability of the β-lactams to function as enzyme inhibitors is of such great medical value, that inhibitors of the enzymes which degrade hydrolytically the β-lactams, the β-lactamases, have equal value. Given this privileged status for the β-lactam ring, it is therefore a disappointment that the exemplification of this ring in marine secondary metabolites is sparse. It may be that biologically active marine β-lactams are there, and simply have yet to be encountered. In this report, we posit a second explanation: that the value of the β-lactam to secure an ecological advantage in the marine environment might be compromised by its close structural similarity to the β-lactones of quorum sensing. The steric and reactivity similarities between the β-lactams and the β-lactones represent an outside-of-the-box opportunity for correlating new structures and new enzyme targets for the discovery of compelling biological activities.
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Affiliation(s)
- Jed F Fisher
- Department of Chemistry & Biochemistry, 354 McCourtney Hall, University of Note Dame, Notre Dame, IN 46656-5670, USA
| | - Shahriar Mobashery
- Department of Chemistry & Biochemistry, 354 McCourtney Hall, University of Note Dame, Notre Dame, IN 46656-5670, USA
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15
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Kojima H, Kushige H, Yagi H, Nishijima T, Moritoki N, Nagoshi N, Nakano Y, Tanaka M, Hori S, Hasegawa Y, Abe Y, Kitago M, Nakamura M, Kitagawa Y. Combinational Treatment Involving Decellularized Extracellular Matrix Hydrogels With Mesenchymal Stem Cells Increased the Efficacy of Cell Therapy in Pancreatitis. Cell Transplant 2023; 32:9636897231170437. [PMID: 37191199 PMCID: PMC10192953 DOI: 10.1177/09636897231170437] [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: 01/31/2023] [Revised: 03/17/2023] [Accepted: 03/27/2023] [Indexed: 05/17/2023] Open
Abstract
Cell transplantation using mesenchymal stem cells (MSCs) has emerged as a promising approach to repairing and regenerating injured or impaired organs. However, the survival and retention of MSCs following transplantation remain a challenge. Therefore, we investigated the efficacy of co-transplantation of MSCs and decellularized extracellular matrix (dECM) hydrogels, which have high cytocompatibility and biocompatibility. The dECM solution was prepared by enzymatic digestion of an acellular porcine liver scaffold. It could be gelled and formed into porous fibrillar microstructures at physiological temperatures. MSCs expanded three-dimensionally in the hydrogel without cell death. Compared to the 2-dimensional cell culture, MSCs cultured in the hydrogel showed increased secretion of hepatocyte growth factor (HGF) and tumor necrosis factor-inducible gene 6 protein (TSG-6), both of which are major anti-inflammatory and anti-fibrotic paracrine factors of MSCs, under TNFα stimulation. In vivo experiments showed that the co-transplantation of MSCs with dECM hydrogel improved the survival rate of engrafted cells compared to those administered without the hydrogel. MSCs also demonstrated therapeutic effects in improving inflammation and fibrosis of pancreatic tissue in a dibutyltin dichloride (DBTC)-induced rat pancreatitis model. Combinational use of dECM hydrogel with MSCs is a new strategy to overcome the challenges of cell therapy using MSCs and can be used for treating chronic inflammatory diseases in clinical settings.
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Affiliation(s)
- Hideaki Kojima
- Department of Surgery, Keio University
School of Medicine, Tokyo, Japan
| | - Hiroko Kushige
- Department of Surgery, Keio University
School of Medicine, Tokyo, Japan
| | - Hiroshi Yagi
- Department of Surgery, Keio University
School of Medicine, Tokyo, Japan
| | - Takayuki Nishijima
- Department of Orthopaedic Surgery, Keio
University School of Medicine, Tokyo, Japan
| | - Nobuko Moritoki
- Electron Microscope Laboratory, Keio
University School of Medicine, Tokyo, Japan
| | - Narihito Nagoshi
- Department of Orthopaedic Surgery, Keio
University School of Medicine, Tokyo, Japan
| | - Yutaka Nakano
- Department of Surgery, Keio University
School of Medicine, Tokyo, Japan
| | - Masayuki Tanaka
- Department of Surgery, Keio University
School of Medicine, Tokyo, Japan
| | - Shutaro Hori
- Department of Surgery, Keio University
School of Medicine, Tokyo, Japan
| | - Yasushi Hasegawa
- Department of Surgery, Keio University
School of Medicine, Tokyo, Japan
| | - Yuta Abe
- Department of Surgery, Keio University
School of Medicine, Tokyo, Japan
| | - Minoru Kitago
- Department of Surgery, Keio University
School of Medicine, Tokyo, Japan
| | - Masaya Nakamura
- Department of Orthopaedic Surgery, Keio
University School of Medicine, Tokyo, Japan
| | - Yuko Kitagawa
- Department of Surgery, Keio University
School of Medicine, Tokyo, Japan
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16
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Liu Z, Li M, Wang S, Huang H, Zhang W. Sulfur-Containing Metabolites from Marine and Terrestrial Fungal Sources: Origin, Structures, and Bioactivities. Mar Drugs 2022; 20:md20120765. [PMID: 36547912 PMCID: PMC9784856 DOI: 10.3390/md20120765] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2022] [Revised: 12/01/2022] [Accepted: 12/01/2022] [Indexed: 12/12/2022] Open
Abstract
Organosulfur natural products (NPs) refer to the different kinds of small molecular-containing sulfur (S) elements. Sulfur-containing NPs tightly link to the biochemical processes and play an important role in the pharmaceutical industry. The majority of S-containing NPs are generally isolated from Alliaceae plants or bacteria, and those from fungi are still relatively rare. In recent years, an increasing number of S-containing metabolites have been discovered in marine and terrestrial fungi, but there is no comprehensive and targeted review to summarize the studies. In order to make it more straightforward to better grasp the fungal-derived S-containing NPs and understand the particularity of marine S-containing NPs compared to those from terrestrial fungi, we summarized the chemical structures and biological activities of 89 new fungal-derived S-containing metabolites from 1929 when the penicillin was discovered to the present in this current review. The structural and bioactive diversity of these S-containing metabolites were concluded in detail, and the preliminary mechanism for C-S bond formation in fungi was also discussed briefly.
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17
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Yoon DS, Byeon E, Kim DH, Lee MC, Shin KH, Hagiwara A, Park HG, Lee JS. Effects of temperature and combinational exposures on lipid metabolism in aquatic invertebrates. Comp Biochem Physiol C Toxicol Pharmacol 2022; 262:109449. [PMID: 36055628 DOI: 10.1016/j.cbpc.2022.109449] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/27/2022] [Revised: 08/22/2022] [Accepted: 08/29/2022] [Indexed: 11/17/2022]
Abstract
Studies of changes in fatty acids in response to environmental temperature changes have been conducted in many species, particularly mammals. However, few studies have considered aquatic invertebrates, even though they are particularly vulnerable to changes in environmental temperature. In this review, we summarize the process by which animals synthesize common fatty acids and point out differences between the fatty acid profiles of vertebrates and those of aquatic invertebrates. Unlike vertebrates, some aquatic invertebrates can directly synthesize polyunsaturated fatty acids (PUFAs), which can be used to respond to temperature changes. Various studies have shown that aquatic invertebrates increase the degree of saturation in their fatty acids through an increase in saturated fatty acid production or a decrease in PUFAs as the temperature increases. In addition, we summarize recent studies that have examined the complex effects of temperature and combinational stressors to determine whether the degree of saturation in aquatic invertebrates is influenced by other factors. The combined effects of carbon dioxide partial pressure, food quality, starvation, salinity, and chemical exposures have been confirmed, and fatty acid profile changes in response to high temperature were greater than those from combinational stressors.
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Affiliation(s)
- Deok-Seo Yoon
- Department of Biological Sciences, College of Science, Sungkyunkwan University, Suwon 16419, South Korea
| | - Eunjin Byeon
- Department of Biological Sciences, College of Science, Sungkyunkwan University, Suwon 16419, South Korea
| | - Duck-Hyun Kim
- Department of Biological Sciences, College of Science, Sungkyunkwan University, Suwon 16419, South Korea
| | - Min-Chul Lee
- Department of Food & Nutrition, College of Bio-Nano Technology, Gachon University, Seongnam 13120, South Korea
| | - Kyung-Hoon Shin
- Department of Marine Science and Convergence Engineering, Hanyang University, Ansan 15588, South Korea
| | - Atsushi Hagiwara
- Graduate School of Fisheries and Environmental Sciences, Nagasaki University, Nagasaki 852-8521, Japan
| | - Heum Gi Park
- Department of Marine Ecology and Environment, College of Life Sciences, Gangneung-Wonju National University, Gangneung 25457, South Korea.
| | - Jae-Seong Lee
- Department of Biological Sciences, College of Science, Sungkyunkwan University, Suwon 16419, South Korea.
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18
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Zhang Q, Niu D, Ni S, An W, Li C, Huhe T, Wang C, Jiang X, Ren J. Effects of pH and Metal Ions on the Hydrothermal Treatment of Penicillin: Kinetic, Pathway, and Antibacterial Activity. Int J Environ Res Public Health 2022; 19:ijerph191710701. [PMID: 36078417 PMCID: PMC9517829 DOI: 10.3390/ijerph191710701] [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: 07/31/2022] [Revised: 08/22/2022] [Accepted: 08/25/2022] [Indexed: 05/02/2023]
Abstract
Antibiotic residues lead to the risk of resistance gene enrichment, which is the main reason why penicillin mycelial dreg (PMD) is defined as hazardous waste. Hydrothermal treatment (HT) is an effective method to treat penicillin mycelial dreg, but the degradation mechanism of penicillin is unclear. In the study, we researched the effects of pH (4-10) at 80-100 °C and metal ions (Mn2+, Fe2+, Cu2+, and Zn2+) at several concentrations on the HT of penicillin, identified the degradation products (DPs) under different conditions, and evaluated the antibacterial activity of hydrothermally treated samples. The results show that penicillin degradation kinetics highly consistent with pseudo-first-order model (R2 = 0.9447-0.9999). The degradation rates (k) at pH = 4, 7, and 10 were 0.1603, 0.0039, and 0.0485 min-1, indicating acidic conditions were more conducive to penicillin degradation. Among the four tested metal ions, Zn2+ had the most significant catalytic effect. Adding 5 mg·L-1 Zn2+ caused 100% degradation rate at pH = 7 after HT for 60 min. Six degradation products (DPs) with low mass-to-charge (m/z ≤ 335) were detected under acidic condition. However, only two and three DPs were observed in the samples catalyzed by Zn2+ and alkali, respectively, and penilloic acid (m/z = 309) was the main DPs under these conditions. Furthermore, no antibacterial activity to Bacillus pumilus was detected in the medium with up to 50% addition of the treated samples under acidic condition. Even though acid, alkali, and some metal ions can improve the degradation ability of penicillin, it was found that the most effective way for removing its anti-bacterial activity was under the acidic condition. Therefore, resistance residue indicates the amount of additive in the process of resource utilization, and avoids the enrichment of resistance genes.
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Affiliation(s)
- Qiaopan Zhang
- Changzhou Key Laboratory of Biomass Green, Safe & High Value Utilization Technology, Institute of Urban and Rural Mining, Changzhou University, Changzhou 213164, China
- School of Environmental and Safety Engineering, Changzhou University, Changzhou 213164, China
| | - Dongze Niu
- Changzhou Key Laboratory of Biomass Green, Safe & High Value Utilization Technology, Institute of Urban and Rural Mining, Changzhou University, Changzhou 213164, China
| | - Shensheng Ni
- Changzhou Key Laboratory of Biomass Green, Safe & High Value Utilization Technology, Institute of Urban and Rural Mining, Changzhou University, Changzhou 213164, China
| | - Wenying An
- Changzhou Key Laboratory of Biomass Green, Safe & High Value Utilization Technology, Institute of Urban and Rural Mining, Changzhou University, Changzhou 213164, China
| | - Chunyu Li
- Changzhou Key Laboratory of Biomass Green, Safe & High Value Utilization Technology, Institute of Urban and Rural Mining, Changzhou University, Changzhou 213164, China
| | - Taoli Huhe
- Changzhou Key Laboratory of Biomass Green, Safe & High Value Utilization Technology, Institute of Urban and Rural Mining, Changzhou University, Changzhou 213164, China
- Correspondence: (T.H.); (J.R.)
| | - Chongqing Wang
- Beijing General Station of Animal Husbandry, Beijing 100101, China
| | - Xingmei Jiang
- Bijie Institute of Animal Husbandry and Veterinary Sciences, Bijie 551700, China
| | - Jianjun Ren
- Changzhou Key Laboratory of Biomass Green, Safe & High Value Utilization Technology, Institute of Urban and Rural Mining, Changzhou University, Changzhou 213164, China
- Correspondence: (T.H.); (J.R.)
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19
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Rabe P, Kamps JJAG, Sutherlin KD, Linyard JDS, Aller P, Pham CC, Makita H, Clifton I, McDonough MA, Leissing TM, Shutin D, Lang PA, Butryn A, Brem J, Gul S, Fuller FD, Kim IS, Cheah MH, Fransson T, Bhowmick A, Young ID, O'Riordan L, Brewster AS, Pettinati I, Doyle M, Joti Y, Owada S, Tono K, Batyuk A, Hunter MS, Alonso-Mori R, Bergmann U, Owen RL, Sauter NK, Claridge TDW, Robinson CV, Yachandra VK, Yano J, Kern JF, Orville AM, Schofield CJ. X-ray free-electron laser studies reveal correlated motion during isopenicillin N synthase catalysis. Sci Adv 2021; 7:eabh0250. [PMID: 34417180 PMCID: PMC8378823 DOI: 10.1126/sciadv.abh0250] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/10/2021] [Accepted: 06/29/2021] [Indexed: 05/23/2023]
Abstract
Isopenicillin N synthase (IPNS) catalyzes the unique reaction of l-δ-(α-aminoadipoyl)-l-cysteinyl-d-valine (ACV) with dioxygen giving isopenicillin N (IPN), the precursor of all natural penicillins and cephalosporins. X-ray free-electron laser studies including time-resolved crystallography and emission spectroscopy reveal how reaction of IPNS:Fe(II):ACV with dioxygen to yield an Fe(III) superoxide causes differences in active site volume and unexpected conformational changes that propagate to structurally remote regions. Combined with solution studies, the results reveal the importance of protein dynamics in regulating intermediate conformations during conversion of ACV to IPN. The results have implications for catalysis by multiple IPNS-related oxygenases, including those involved in the human hypoxic response, and highlight the power of serial femtosecond crystallography to provide insight into long-range enzyme dynamics during reactions presently impossible for nonprotein catalysts.
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Affiliation(s)
- Patrick Rabe
- Chemistry Research Laboratory, Department of Chemistry and the Ineos Oxford Institute for Antimicrobial Research, University of Oxford, 12 Mansfield Road, Oxford OX1 3TA, UK
| | - Jos J A G Kamps
- Chemistry Research Laboratory, Department of Chemistry and the Ineos Oxford Institute for Antimicrobial Research, University of Oxford, 12 Mansfield Road, Oxford OX1 3TA, UK
- Diamond Light Source, Diamond House, Harwell Science and Innovation Campus, Didcot OX11 0DE, UK
- Research Complex at Harwell, Rutherford Appleton Laboratory, Didcot, Oxfordshire OX11 0FA, UK
| | - Kyle D Sutherlin
- Molecular Biophysics and Integrated Bioimaging Division, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA 94720, USA
| | - James D S Linyard
- Chemistry Research Laboratory, Department of Chemistry and the Ineos Oxford Institute for Antimicrobial Research, University of Oxford, 12 Mansfield Road, Oxford OX1 3TA, UK
| | - Pierre Aller
- Diamond Light Source, Diamond House, Harwell Science and Innovation Campus, Didcot OX11 0DE, UK
- Research Complex at Harwell, Rutherford Appleton Laboratory, Didcot, Oxfordshire OX11 0FA, UK
| | - Cindy C Pham
- Molecular Biophysics and Integrated Bioimaging Division, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA 94720, USA
| | - Hiroki Makita
- Molecular Biophysics and Integrated Bioimaging Division, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA 94720, USA
| | - Ian Clifton
- Chemistry Research Laboratory, Department of Chemistry and the Ineos Oxford Institute for Antimicrobial Research, University of Oxford, 12 Mansfield Road, Oxford OX1 3TA, UK
| | - Michael A McDonough
- Chemistry Research Laboratory, Department of Chemistry and the Ineos Oxford Institute for Antimicrobial Research, University of Oxford, 12 Mansfield Road, Oxford OX1 3TA, UK
| | - Thomas M Leissing
- Chemistry Research Laboratory, Department of Chemistry and the Ineos Oxford Institute for Antimicrobial Research, University of Oxford, 12 Mansfield Road, Oxford OX1 3TA, UK
| | - Denis Shutin
- Chemistry Research Laboratory, Department of Chemistry and the Ineos Oxford Institute for Antimicrobial Research, University of Oxford, 12 Mansfield Road, Oxford OX1 3TA, UK
| | - Pauline A Lang
- Chemistry Research Laboratory, Department of Chemistry and the Ineos Oxford Institute for Antimicrobial Research, University of Oxford, 12 Mansfield Road, Oxford OX1 3TA, UK
| | - Agata Butryn
- Diamond Light Source, Diamond House, Harwell Science and Innovation Campus, Didcot OX11 0DE, UK
- Research Complex at Harwell, Rutherford Appleton Laboratory, Didcot, Oxfordshire OX11 0FA, UK
| | - Jürgen Brem
- Chemistry Research Laboratory, Department of Chemistry and the Ineos Oxford Institute for Antimicrobial Research, University of Oxford, 12 Mansfield Road, Oxford OX1 3TA, UK
| | - Sheraz Gul
- Molecular Biophysics and Integrated Bioimaging Division, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA 94720, USA
| | - Franklin D Fuller
- Linac Coherent Light Source, SLAC National Accelerator Laboratory, Menlo Park, CA 94025, USA
| | - In-Sik Kim
- Molecular Biophysics and Integrated Bioimaging Division, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA 94720, USA
| | - Mun Hon Cheah
- Department of Chemistry - Ångström, Molecular Biomimetics, Uppsala University, SE 751 20 Uppsala, Sweden
| | - Thomas Fransson
- Interdisciplinary Center for Scientific Computing, University of Heidelberg, 69120 Heidelberg, Germany
| | - Asmit Bhowmick
- Molecular Biophysics and Integrated Bioimaging Division, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA 94720, USA
| | - Iris D Young
- Molecular Biophysics and Integrated Bioimaging Division, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA 94720, USA
- Department of Bioengineering and Therapeutic Sciences, University of California, San Francisco, 600 16th Street, San Francisco, CA 94158, USA
| | - Lee O'Riordan
- Molecular Biophysics and Integrated Bioimaging Division, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA 94720, USA
| | - Aaron S Brewster
- Molecular Biophysics and Integrated Bioimaging Division, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA 94720, USA
| | - Ilaria Pettinati
- Chemistry Research Laboratory, Department of Chemistry and the Ineos Oxford Institute for Antimicrobial Research, University of Oxford, 12 Mansfield Road, Oxford OX1 3TA, UK
| | - Margaret Doyle
- Molecular Biophysics and Integrated Bioimaging Division, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA 94720, USA
| | - Yasumasa Joti
- Japan Synchrotron Radiation Research Institute, 1-1-1 Kouto, Sayo-cho, Sayo-gun, Hyogo 679-5198, Japan
- RIKEN SPring-8 Center, 1-1-1 Kouto, Sayo-cho, Sayo-gun, Hyogo 679-5148, Japan
| | - Shigeki Owada
- Japan Synchrotron Radiation Research Institute, 1-1-1 Kouto, Sayo-cho, Sayo-gun, Hyogo 679-5198, Japan
- RIKEN SPring-8 Center, 1-1-1 Kouto, Sayo-cho, Sayo-gun, Hyogo 679-5148, Japan
| | - Kensuke Tono
- Japan Synchrotron Radiation Research Institute, 1-1-1 Kouto, Sayo-cho, Sayo-gun, Hyogo 679-5198, Japan
- RIKEN SPring-8 Center, 1-1-1 Kouto, Sayo-cho, Sayo-gun, Hyogo 679-5148, Japan
| | - Alexander Batyuk
- Linac Coherent Light Source, SLAC National Accelerator Laboratory, Menlo Park, CA 94025, USA
| | - Mark S Hunter
- Linac Coherent Light Source, SLAC National Accelerator Laboratory, Menlo Park, CA 94025, USA
| | - Roberto Alonso-Mori
- Linac Coherent Light Source, SLAC National Accelerator Laboratory, Menlo Park, CA 94025, USA
| | - Uwe Bergmann
- Stanford PULSE Institute, SLAC National Accelerator Laboratory, Menlo Park, CA 94025, USA
- Department of Physics, University of Wisconsin-Madison, 1150 University Avenue, Madison, WI 53706, USA
| | - Robin L Owen
- Diamond Light Source, Diamond House, Harwell Science and Innovation Campus, Didcot OX11 0DE, UK
| | - Nicholas K Sauter
- Molecular Biophysics and Integrated Bioimaging Division, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA 94720, USA
| | - Timothy D W Claridge
- Chemistry Research Laboratory, Department of Chemistry and the Ineos Oxford Institute for Antimicrobial Research, University of Oxford, 12 Mansfield Road, Oxford OX1 3TA, UK
| | - Carol V Robinson
- Chemistry Research Laboratory, Department of Chemistry and the Ineos Oxford Institute for Antimicrobial Research, University of Oxford, 12 Mansfield Road, Oxford OX1 3TA, UK
| | - Vittal K Yachandra
- Molecular Biophysics and Integrated Bioimaging Division, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA 94720, USA
| | - Junko Yano
- Molecular Biophysics and Integrated Bioimaging Division, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA 94720, USA
| | - Jan F Kern
- Molecular Biophysics and Integrated Bioimaging Division, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA 94720, USA.
| | - Allen M Orville
- Diamond Light Source, Diamond House, Harwell Science and Innovation Campus, Didcot OX11 0DE, UK.
- Research Complex at Harwell, Rutherford Appleton Laboratory, Didcot, Oxfordshire OX11 0FA, UK
| | - Christopher J Schofield
- Chemistry Research Laboratory, Department of Chemistry and the Ineos Oxford Institute for Antimicrobial Research, University of Oxford, 12 Mansfield Road, Oxford OX1 3TA, UK.
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20
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Wang P, Shen C, Cong Q, Xu K, Lu J. Enzyme-catalyzed biodegradation of penicillin fermentation residues by β-lactamase OtLac from Ochrobactrum tritici. Microb Cell Fact 2021; 20:117. [PMID: 34120587 PMCID: PMC8201694 DOI: 10.1186/s12934-021-01606-2] [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] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2021] [Accepted: 06/05/2021] [Indexed: 12/22/2022] Open
Abstract
BACKGROUND Biodegradation of antibiotics is a promising method for the large-scale removal of antibiotic residues in the environment. However, the enzyme that is involved in the biodegradation process is the key information to be revealed. RESULTS In this study, the beta-lactamase from Ochrobactrum tritici that mediates the biodegradation of penicillin V was identified and characterized. When searching the proteins of Ochrobactrum tritici, the β-lactamase (OtLac) was identified. OtLac consists of 347 amino acids, and predicted isoelectric point is 7.0. It is a class C β-lactamase according to BLAST analysis. The coding gene of OtLac was amplified from the genomic DNA of Ochrobactrum tritici. The OtLac was overexpressed in E. coli BL21 (DE3) and purified with Ni2+ column affinity chromatography. The biodegradation ability of penicillin V by OtLac was identified in an in vitro study and analyzed by HPLC. The optimal temperature for OtLac is 32 ℃ and the optimal pH is 7.0. Steady-state kinetics showed that OtLac was highly active against penicillin V with a Km value of 17.86 μM and a kcat value of 25.28 s-1 respectively. CONCLUSIONS OtLac demonstrated biodegradation activity towards penicillin V potassium, indicating that OtLac is expected to degrade penicillin V in the future.
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Affiliation(s)
- Peng Wang
- College of Chemical and Pharmaceutical Engineering, Hebei University of Science and Technology, Shijiazhuang, 050018, China.
- State Key Laboratory Breeding Base-Hebei Province Key Laboratory of Molecular Chemistry for Drug, Hebei University of Science and Technology, Shijiazhuang, 050018, China.
- Hebei Province Pharmaceutical Chemical Engineering Technology Research Center, Shijiazhuang, 050018, China.
| | - Chen Shen
- College of Chemical and Pharmaceutical Engineering, Hebei University of Science and Technology, Shijiazhuang, 050018, China
- State Key Laboratory Breeding Base-Hebei Province Key Laboratory of Molecular Chemistry for Drug, Hebei University of Science and Technology, Shijiazhuang, 050018, China
| | - Qinqin Cong
- College of Chemical and Pharmaceutical Engineering, Hebei University of Science and Technology, Shijiazhuang, 050018, China
| | - Kaili Xu
- College of Chemical and Pharmaceutical Engineering, Hebei University of Science and Technology, Shijiazhuang, 050018, China
| | - Jialin Lu
- College of Chemical and Pharmaceutical Engineering, Hebei University of Science and Technology, Shijiazhuang, 050018, China
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21
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Modi T, Risso VA, Martinez-Rodriguez S, Gavira JA, Mebrat MD, Van Horn WD, Sanchez-Ruiz JM, Banu Ozkan S. Hinge-shift mechanism as a protein design principle for the evolution of β-lactamases from substrate promiscuity to specificity. Nat Commun 2021; 12:1852. [PMID: 33767175 PMCID: PMC7994827 DOI: 10.1038/s41467-021-22089-0] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2020] [Accepted: 02/01/2021] [Indexed: 01/31/2023] Open
Abstract
TEM-1 β-lactamase degrades β-lactam antibiotics with a strong preference for penicillins. Sequence reconstruction studies indicate that it evolved from ancestral enzymes that degraded a variety of β-lactam antibiotics with moderate efficiency. This generalist to specialist conversion involved more than 100 mutational changes, but conserved fold and catalytic residues, suggesting a role for dynamics in enzyme evolution. Here, we develop a conformational dynamics computational approach to rationally mold a protein flexibility profile on the basis of a hinge-shift mechanism. By deliberately weighting and altering the conformational dynamics of a putative Precambrian β-lactamase, we engineer enzyme specificity that mimics the modern TEM-1 β-lactamase with only 21 amino acid replacements. Our conformational dynamics design thus re-enacts the evolutionary process and provides a rational allosteric approach for manipulating function while conserving the enzyme active site.
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Affiliation(s)
- Tushar Modi
- Department of Physics and Center for Biological Physics, Arizona State University, Tempe, AZ, USA
| | - Valeria A Risso
- Departamento de Quimica Fisica, Facultad de Ciencias, Universidad de Granada, Granada, Spain
- Unidad de Excelencia de Quimica Aplicada a Biomedicina y Medioambiente (UEQ), Universidad de Granada, Granada, Spain
| | - Sergio Martinez-Rodriguez
- Departamento de Quimica Fisica, Facultad de Ciencias, Universidad de Granada, Granada, Spain
- Departamento de Bioquimica, Biologia Molecular III e Inmunologia, Universidad de Granada, Granada, Spain
| | - Jose A Gavira
- Unidad de Excelencia de Quimica Aplicada a Biomedicina y Medioambiente (UEQ), Universidad de Granada, Granada, Spain
- Laboratorio de Estudios Cristalograficos, Instituto Andaluz de Ciencias de la Tierra, CSIC, Universidad de Granada, Granada, Armilla, Spain
| | - Mubark D Mebrat
- The Biodesign Institute Virginia G. Piper Center for Personalized Diagnostics, Arizona State University, Tempe, AZ, USA
- School of Molecular Sciences, Arizona State University, Tempe, AZ, USA
| | - Wade D Van Horn
- The Biodesign Institute Virginia G. Piper Center for Personalized Diagnostics, Arizona State University, Tempe, AZ, USA
- School of Molecular Sciences, Arizona State University, Tempe, AZ, USA
| | - Jose M Sanchez-Ruiz
- Departamento de Quimica Fisica, Facultad de Ciencias, Universidad de Granada, Granada, Spain.
- Unidad de Excelencia de Quimica Aplicada a Biomedicina y Medioambiente (UEQ), Universidad de Granada, Granada, Spain.
| | - S Banu Ozkan
- Department of Physics and Center for Biological Physics, Arizona State University, Tempe, AZ, USA.
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22
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Chenouard R, Mahieu R, Luque Paz D, Marion E, Eveillard M, Dubée V. Impact of ceftriaxone and temocillin on fecal abundance of extended-spectrum β-lactamase producing Escherichia coli in a mouse model. PLoS One 2021; 16:e0248177. [PMID: 33690674 PMCID: PMC7946171 DOI: 10.1371/journal.pone.0248177] [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] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2020] [Accepted: 02/19/2021] [Indexed: 12/16/2022] Open
Abstract
BACKGROUND Gut colonization by ESBL-producing Enterobacteriaceae (ESBL-PE) is widespread and is promoted by antibiotic exposure. Higher fecal abundance of ESBL-PE promotes the dissemination of the bacteria in the environment and is associated with increased risk of infection. Ceftriaxone and temocillin are commonly used antibiotics with a different activity on gut flora. Their impact on fecal abundance of ESBL-producing Enterobacteriaceae has not been studied. The objective of this study was to compare the propensity of ceftriaxone and temocillin to modify the abundance of ESBL-producing Escherichia coli in feces of colonized mice. METHODS Mice received broad-spectrum antibiotics in order to disrupt their normal gut flora. A CTX-M-type ESBL-producing E. coli clinical isolate was then administered orally, leading to durable colonization. Thirty days later, mice received either temocillin or ceftriaxone with drinking water at a concentration simulating human intestinal exposure. Third-generation-cephalosporin resistant (3GCR) E. coli were enumerated in feces on selective medium before, 2 days and 10 days after the end of antibiotic exposure. The experiment was performed with two E. coli isolates with different temocillin minimum inhibitory concentrations. RESULTS Exposure to ceftriaxone induced an increase in the fecal abundance of 3GCR E. coli. In contrast, temocillin had no effect or transiently decreased the number of 3GCR E. coli. Results obtained with the two strains were similar. CONCLUSION Contrary to ceftriaxone, temocillin does not promote expansion of ESBL-producing E. coli in feces of colonized mice. Thus temocillin may be a therapeutic of choice when a temocillin-susceptible strain infection is suspected or proven to prevent the expansion of ESBL-PE in a previously colonized patient.
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Affiliation(s)
- Rachel Chenouard
- Microbiology Laboratory, Angers University Hospital, Angers, France
- Center for Research in Cancerology and Immunology Nantes-Angers, UMRS1232, Institut National de la Santé et de la Recherche Médicale, Université de Nantes, Université d’Angers, Angers, France
| | - Rafael Mahieu
- Center for Research in Cancerology and Immunology Nantes-Angers, UMRS1232, Institut National de la Santé et de la Recherche Médicale, Université de Nantes, Université d’Angers, Angers, France
- Infectious Diseases Department, Angers University Hospital, Angers, France
| | - David Luque Paz
- Center for Research in Cancerology and Immunology Nantes-Angers, UMRS1232, Institut National de la Santé et de la Recherche Médicale, Université de Nantes, Université d’Angers, Angers, France
| | - Estelle Marion
- Center for Research in Cancerology and Immunology Nantes-Angers, UMRS1232, Institut National de la Santé et de la Recherche Médicale, Université de Nantes, Université d’Angers, Angers, France
| | - Matthieu Eveillard
- Microbiology Laboratory, Angers University Hospital, Angers, France
- Center for Research in Cancerology and Immunology Nantes-Angers, UMRS1232, Institut National de la Santé et de la Recherche Médicale, Université de Nantes, Université d’Angers, Angers, France
| | - Vincent Dubée
- Center for Research in Cancerology and Immunology Nantes-Angers, UMRS1232, Institut National de la Santé et de la Recherche Médicale, Université de Nantes, Université d’Angers, Angers, France
- Infectious Diseases Department, Angers University Hospital, Angers, France
- * E-mail:
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23
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Wang B, Yan J, Li G, Zhang J, Zhang L, Li Z, Chen H. Risk of penicillin fermentation dreg: Increase of antibiotic resistance genes after soil discharge. Environ Pollut 2020; 259:113956. [PMID: 32023801 DOI: 10.1016/j.envpol.2020.113956] [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] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/17/2019] [Revised: 12/25/2019] [Accepted: 01/08/2020] [Indexed: 06/10/2023]
Abstract
Penicillin fermentation dreg (PFD) is a solid waste discharged by pharmaceutical enterprises in the fermentation production process. Due to the residual antibiotic of PFD, the risk of antibiotic resistance bacteria (ARB) generation should be considered in the disposal process. High-throughput quantitative PCR (HT-qPCR) and 16S rRNA gene sequencing were performed to investigate the effect of PFD on the dynamics of antibiotic resistance genes (ARGs) and bacterial community during a lab-scale soil experiment. After the application of PFD, the bacterial number and diversity showed an obvious decrease in the initial days. The abundances of Streptomyces and Bacillus, which are the most widespread predicted source phyla of ARGs, increased remarkably from 4.42% to 2.59%-22.97% and 21.35%. The increase of ARGs was observed during the PFD application and the ARGs carried by PFD itself contributed to the initiation of soil ARGs. The results of redundancy analysis (RDA) show that the shift in bacterial community induced by variation of penicillin content is the primary driver shaping ARGs compositions.
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Affiliation(s)
- Bing Wang
- College of Chemical Engineering, Northeast Electric Power University, Jilin, 132012, China
| | - Jianquan Yan
- College of Chemical Engineering, Northeast Electric Power University, Jilin, 132012, China
| | - Guomin Li
- School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin, 150090, China
| | - Jian Zhang
- College of Chemical Engineering, Northeast Electric Power University, Jilin, 132012, China.
| | - Lanhe Zhang
- College of Chemical Engineering, Northeast Electric Power University, Jilin, 132012, China
| | - Zheng Li
- College of Chemical Engineering, Northeast Electric Power University, Jilin, 132012, China
| | - Houhe Chen
- School of Electrical Engineering, Northeast Electric Power University, Jilin, 132012, China
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24
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Harrison EM, Ba X, Coll F, Blane B, Restif O, Carvell H, Köser CU, Jamrozy D, Reuter S, Lovering A, Gleadall N, Bellis KL, Uhlemann AC, Lowy FD, Massey RC, Grilo IR, Sobral R, Larsen J, Rhod Larsen A, Vingsbo Lundberg C, Parkhill J, Paterson GK, Holden MTG, Peacock SJ, Holmes MA. Genomic identification of cryptic susceptibility to penicillins and β-lactamase inhibitors in methicillin-resistant Staphylococcus aureus. Nat Microbiol 2019; 4:1680-1691. [PMID: 31235959 PMCID: PMC7611363 DOI: 10.1038/s41564-019-0471-0] [Citation(s) in RCA: 39] [Impact Index Per Article: 7.8] [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: 02/21/2019] [Accepted: 04/26/2019] [Indexed: 01/04/2023]
Abstract
Antibiotic resistance in bacterial pathogens threatens the future of modern medicine. One such resistant pathogen is methicillin-resistant Staphylococcus aureus (MRSA), which is resistant to nearly all β-lactam antibiotics, limiting treatment options. Here, we show that a significant proportion of MRSA isolates from different lineages, including the epidemic USA300 lineage, are susceptible to penicillins when used in combination with β-lactamase inhibitors such as clavulanic acid. Susceptibility is mediated by a combination of two different mutations in the mecA promoter region that lowers mecA-encoded penicillin-binding protein 2a (PBP2a) expression, and in the majority of isolates by either one of two substitutions in PBP2a (E246G or M122I) that increase the affinity of PBP2a for penicillin in the presence of clavulanic acid. Treatment of S. aureus infections in wax moth and mouse models shows that penicillin/β-lactamase inhibitor susceptibility can be exploited as an effective therapeutic choice for 'susceptible' MRSA infection. Finally, we show that isolates with the PBP2a E246G substitution have a growth advantage in the presence of penicillin but the absence of clavulanic acid, which suggests that penicillin/β-lactamase susceptibility is an example of collateral sensitivity (resistance to one antibiotic increases sensitivity to another). Our findings suggest that widely available and currently disregarded antibiotics could be effective in a significant proportion of MRSA infections.
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Affiliation(s)
- Ewan M Harrison
- Wellcome Sanger Institute, Hinxton, UK.
- Department of Medicine, University of Cambridge, Cambridge, UK.
- Department of Public Health and Primary Care, University of Cambridge, Cambridge, UK.
| | - Xiaoliang Ba
- Department of Veterinary Medicine, University of Cambridge, Cambridge, UK
| | - Francesc Coll
- London School of Hygiene and Tropical Medicine, London, UK
| | - Beth Blane
- Department of Medicine, University of Cambridge, Cambridge, UK
| | - Olivier Restif
- Department of Veterinary Medicine, University of Cambridge, Cambridge, UK
| | - Henry Carvell
- School of Cellular and Molecular Medicine, University of Bristol, Bristol, UK
| | - Claudio U Köser
- Department of Genetics, University of Cambridge, Cambridge, UK
| | | | - Sandra Reuter
- Institute for Infection Prevention and Hospital Epidemiology, Medical Center - University of Freiburg, Freiburg, Germany
| | - Andrew Lovering
- Institute of Microbiology and Infection, School of Biosciences, University of Birmingham, Birmingham, UK
| | | | | | - Anne-Catrin Uhlemann
- Division of Infectious Diseases, Department of Medicine, Columbia University, New York, NY, USA
| | - Franklin D Lowy
- Division of Infectious Diseases, Department of Medicine, Columbia University, New York, NY, USA
| | - Ruth C Massey
- School of Cellular and Molecular Medicine, University of Bristol, Bristol, UK
| | - Inês R Grilo
- UCIBIO@REQUIMTE, Departamento de Ciências da Vida, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, Lisboa, Portugal
| | - Rita Sobral
- UCIBIO@REQUIMTE, Departamento de Ciências da Vida, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, Lisboa, Portugal
| | - Jesper Larsen
- Department of Bacteria, Parasites and Fungi, Statens Serum Institut, Copenhagen, Denmark
| | - Anders Rhod Larsen
- Department of Bacteria, Parasites and Fungi, Statens Serum Institut, Copenhagen, Denmark
| | | | | | - Gavin K Paterson
- Royal (Dick) School of Veterinary Studies, University of Edinburgh, Edinburgh, UK
- The Roslin Institute, University of Edinburgh, Edinburgh, UK
| | | | - Sharon J Peacock
- Wellcome Sanger Institute, Hinxton, UK
- Department of Medicine, University of Cambridge, Cambridge, UK
- London School of Hygiene and Tropical Medicine, London, UK
| | - Mark A Holmes
- Department of Veterinary Medicine, University of Cambridge, Cambridge, UK
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25
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Wang Z, Hong C, Xing Y, Li Z, Li Y, Yang J, Feng L, Hu J, Sun H. Thermal characteristics and product formation mechanism during pyrolysis of penicillin fermentation residue. Bioresour Technol 2019; 277:46-54. [PMID: 30658335 DOI: 10.1016/j.biortech.2019.01.030] [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] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/26/2018] [Revised: 01/07/2019] [Accepted: 01/08/2019] [Indexed: 06/09/2023]
Abstract
This work studied thermal characteristics and product formation mechanism during pyrolysis of penicillin fermentation residue (PR). Results showed that PR pyrolysis proceeded in four stages. The kinetic triplet of each stage was calculated using Flynn-Wall-Ozawa, Kissinger-Akahira-Sunose, and integral master-plot methods. The kinetic model for stage 1 was the three-dimensional diffusion model, the simple reaction order model for stage 2 and stage 4, and the nucleation-growth model for stage 3. FTIR analysis suggested that the intensities of absorption peaks of NH, CO, CH, CN, and CO in chars weakened gradually with increasing temperature, corresponding to the production of CH4, CO, NH3, and HCN. GC-MS results indicated that the high protein content in PR resulted in a high fraction of nitrogenated compounds (amides and amines, nitriles, and N-heterocyclic species) in bio-oil. The formation mechanism of these compounds was discussed. Besides, bio-oil also contained large quantities of oxygenated compounds and a few hydrocarbons.
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Affiliation(s)
- Zhiqiang Wang
- Department of Environmental Engineering, University of Science and Technology Beijing, Beijing 100083, China; Beijing Key Laboratory of Resource-oriented Treatment of Industrial Pollutants, University of Science and Technology Beijing, Beijing 100083, China; Department of Environmental Engineering, Hebei University of Science and Technology, Shijiazhuang 050018, China
| | - Chen Hong
- Department of Environmental Engineering, University of Science and Technology Beijing, Beijing 100083, China; Beijing Key Laboratory of Resource-oriented Treatment of Industrial Pollutants, University of Science and Technology Beijing, Beijing 100083, China.
| | - Yi Xing
- Department of Environmental Engineering, University of Science and Technology Beijing, Beijing 100083, China; Beijing Key Laboratory of Resource-oriented Treatment of Industrial Pollutants, University of Science and Technology Beijing, Beijing 100083, China; Department of Environmental Engineering, Hebei University of Science and Technology, Shijiazhuang 050018, China
| | - Zaixing Li
- Department of Environmental Engineering, Hebei University of Science and Technology, Shijiazhuang 050018, China
| | - Yifei Li
- Department of Environmental Engineering, University of Science and Technology Beijing, Beijing 100083, China; Beijing Key Laboratory of Resource-oriented Treatment of Industrial Pollutants, University of Science and Technology Beijing, Beijing 100083, China
| | - Jian Yang
- Department of Environmental Engineering, University of Science and Technology Beijing, Beijing 100083, China; Beijing Key Laboratory of Resource-oriented Treatment of Industrial Pollutants, University of Science and Technology Beijing, Beijing 100083, China
| | - Lihui Feng
- Department of Environmental Engineering, University of Science and Technology Beijing, Beijing 100083, China; Beijing Key Laboratory of Resource-oriented Treatment of Industrial Pollutants, University of Science and Technology Beijing, Beijing 100083, China
| | - Jiashuo Hu
- Department of Environmental Engineering, University of Science and Technology Beijing, Beijing 100083, China; Beijing Key Laboratory of Resource-oriented Treatment of Industrial Pollutants, University of Science and Technology Beijing, Beijing 100083, China
| | - Haipeng Sun
- China Certification Centre for Automotive Products Co., Ltd., Beijing 100044, China
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26
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Copete-Pertuz LS, Plácido J, Serna-Galvis EA, Torres-Palma RA, Mora A. Elimination of Isoxazolyl-Penicillins antibiotics in waters by the ligninolytic native Colombian strain Leptosphaerulina sp. considerations on biodegradation process and antimicrobial activity removal. Sci Total Environ 2018; 630:1195-1204. [PMID: 29554741 DOI: 10.1016/j.scitotenv.2018.02.244] [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] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/01/2017] [Revised: 02/14/2018] [Accepted: 02/19/2018] [Indexed: 06/08/2023]
Abstract
In this work, Leptosphaerulina sp. (a Colombian native fungus) significantly removed three Isoxazolyl-Penicillin antibiotics (IP): oxacillin (OXA, 16000 μg L-1), cloxacillin (CLX, 17500 μg L-1) and dicloxacillin (DCX, 19000 μg L-1) from water. The biological treatment was performed at pH 5.6, 28 °C, and 160 rpm for 15 days. The biotransformation process and lack of toxicity of the final solutions (antibacterial activity (AA) and cytotoxicity) were tested. The role of enzymes in IP removal was analysed through in vitro studies with enzymatic extracts (crude and pre-purified) from Leptosphaerulina sp., commercial enzymes and enzymatic inhibitors. Furthermore, the applicability of mycoremediation process to a complex matrix (simulated hospital wastewater) was evaluated. IP were considerably abated by the fungus, OXA was the fastest degraded (day 6), followed by CLX (day 7) and DCX (day 8). Antibiotics biodegradation was associated to laccase and versatile peroxidase action. Assays using commercial enzymes (i.e. laccase from Trametes versicolor and horseradish peroxidase) and inhibitors (EDTA, NaCl, sodium acetate, manganese (II) ions) confirmed the significant role of enzymatic transformation. Whereas, biomass sorption was not an important process in the antibiotics elimination. Evaluation of AA against Staphylococcus aureus ATCC 6538 revealed that Leptosphaerulina sp. also eliminated the AA. In addition, the cytotoxicity assay (MTT) on the HepG2 cell line demonstrated that the IP final solutions were non-toxic. Finally, Leptosphaerulina sp. eliminated OXA and its AA from synthetic hospital wastewater at 6 days. All these results evidenced the potential of Leptosphaerulina sp. mycoremediation as a novel environmentally friendly process for the removal of IP from aqueous systems.
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Affiliation(s)
- Ledys S Copete-Pertuz
- Grupo de Investigación Producción Estructura y Aplicación de Biomoléculas (PROBIOM), Escuela de Química, Facultad de Ciencias, Universidad Nacional de Colombia - Sede Medellín, Calle 59A No 63-20, Medellín, Colombia
| | - Jersson Plácido
- Centre for Cytochrome P450 Biodiversity, Institute of Life Science, Medical School, Swansea University, Swansea SA2 8PP, Wales, UK
| | - Efraím A Serna-Galvis
- Grupo de Investigación en Remediación Ambiental y Biocatálisis (GIRAB), Instituto de Química, Facultad de Ciencias Exactas y Naturales, Universidad de Antioquia UdeA, Calle 70 No. 52-21, Medellín, Colombia
| | - Ricardo A Torres-Palma
- Grupo de Investigación en Remediación Ambiental y Biocatálisis (GIRAB), Instituto de Química, Facultad de Ciencias Exactas y Naturales, Universidad de Antioquia UdeA, Calle 70 No. 52-21, Medellín, Colombia
| | - Amanda Mora
- Grupo de Investigación Producción Estructura y Aplicación de Biomoléculas (PROBIOM), Escuela de Química, Facultad de Ciencias, Universidad Nacional de Colombia - Sede Medellín, Calle 59A No 63-20, Medellín, Colombia.
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Qiang H, Li YY, Pei MF. [Effect of COD/SO 42- Ratio on Anaerobic Digestion of Penicillin Bacterial Residues]. Huan Jing Ke Xue 2018; 39:3443-3451. [PMID: 29962172 DOI: 10.13227/j.hjkx.201709199] [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] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
In order to assess the sulfate-induced inhibition of anaerobic digestion of antibiotic manufacturing bio-waste. The effect of COD/SO42- ratio on biogas production potential and substrate utilization characteristics during the acidogenic phase of anaerobic digestion of penicillin bacterial residues were investigated through batch experiments. The results obtained indicated that biogas production was gradually enhanced after 10 days of anaerobic digestion. However, the maximum cumulative methane production probably exceeded about 208 mL·g-1(on TS basis) since COD/SO42-≥3. Because adaptive acclimation, more than 71% COD removal, which may have been converted to methane, was achieved. Consequently, at COD/SO42-≤1.5, methane production was suppressed by 49% and 100% when the organics and SO42- removal rates were less than 17% and 5%, respectively. This indicated that methanogens and sulfate-reducing bacteria were inhibited at high sulfate loading rates. In addition, the COD balance analysis revealed that less than 9.1% of the COD was converted to methane. However, 5.0%-9.0% of the COD was used for sulfate reduction. This means that methanogens are more susceptible than sulfate-reducing bacteria to sulfide-induced inhibition. The S balance showed that the reduced sulfate was mainly present as sulfide in the digester. A small fraction of it was present as hydrogen sulfide in the biogas. The analysis of substrate utilization characteristics during the acidogenic phase revealed that methanation of soluble protein was initiated after methanation of soluble carbohydrate.
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Affiliation(s)
- Hong Qiang
- College of Natural Resources and Environment, Northwest A & F University, Yangling 712100, China
| | - Yu-You Li
- Department of Civil and Environmental Engineering, Graduate School of Engineering, Tohoku University, Sendai 980-8579, Japan
| | - Meng-Fu Pei
- College of Natural Resources and Environment, Northwest A & F University, Yangling 712100, China
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Crofts TS, Wang B, Spivak A, Gianoulis TA, Forsberg KJ, Gibson MK, Johnsky LA, Broomall SM, Rosenzweig CN, Skowronski EW, Gibbons HS, Sommer MOA, Dantas G. Shared strategies for β-lactam catabolism in the soil microbiome. Nat Chem Biol 2018; 14:556-564. [PMID: 29713061 PMCID: PMC5964007 DOI: 10.1038/s41589-018-0052-1] [Citation(s) in RCA: 51] [Impact Index Per Article: 8.5] [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: 08/03/2017] [Accepted: 03/08/2018] [Indexed: 11/10/2022]
Abstract
The soil microbiome can produce, resist, or degrade antibiotics and even catabolize them. While resistance genes are widely distributed in the soil, there is a dearth of knowledge concerning antibiotic catabolism. Here we describe a pathway for penicillin catabolism in four isolates. Genomic and transcriptomic sequencing revealed β-lactamase, amidase, and phenylacetic acid catabolon upregulation. Knocking out part of the phenylacetic acid catabolon or an apparent penicillin utilization operon (put) resulted in loss of penicillin catabolism in one isolate. A hydrolase from the put operon was found to degrade in vitro benzylpenicilloic acid, the β-lactamase penicillin product. To test the generality of this strategy, an Escherichia coli strain was engineered to co-express a β-lactamase and a penicillin amidase or the put operon, enabling it to grow using penicillin or benzylpenicilloic acid, respectively. Elucidation of additional pathways may allow bioremediation of antibiotic-contaminated soils and discovery of antibiotic-remodeling enzymes with industrial utility.
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Affiliation(s)
- Terence S Crofts
- Department of Pathology and Immunology, Washington University in St Louis School of Medicine, Saint Louis, MO, USA
- The Edison Family Center for Genome Sciences and Systems Biology, Washington University in St Louis School of Medicine, Saint Louis, MO, USA
| | - Bin Wang
- Department of Pathology and Immunology, Washington University in St Louis School of Medicine, Saint Louis, MO, USA
- The Edison Family Center for Genome Sciences and Systems Biology, Washington University in St Louis School of Medicine, Saint Louis, MO, USA
| | - Aaron Spivak
- The Edison Family Center for Genome Sciences and Systems Biology, Washington University in St Louis School of Medicine, Saint Louis, MO, USA
| | - Tara A Gianoulis
- Wyss Institute for Biologically Inspired Engineering, Harvard, Cambridge, MA, USA
| | - Kevin J Forsberg
- The Edison Family Center for Genome Sciences and Systems Biology, Washington University in St Louis School of Medicine, Saint Louis, MO, USA
- Division of Basic Sciences, Fred Hutchinson Cancer Center, Seattle, WA, USA
| | - Molly K Gibson
- The Edison Family Center for Genome Sciences and Systems Biology, Washington University in St Louis School of Medicine, Saint Louis, MO, USA
| | - Lauren A Johnsky
- US Army Edgewood Chemical Biological Center, Aberdeen Proving Ground, Aberdeen, MD, USA
| | - Stacey M Broomall
- US Army Edgewood Chemical Biological Center, Aberdeen Proving Ground, Aberdeen, MD, USA
| | - C Nicole Rosenzweig
- US Army Edgewood Chemical Biological Center, Aberdeen Proving Ground, Aberdeen, MD, USA
| | - Evan W Skowronski
- US Army Edgewood Chemical Biological Center, Aberdeen Proving Ground, Aberdeen, MD, USA
- TMG Biosciences, LLC, Austin, TX, USA
| | - Henry S Gibbons
- US Army Edgewood Chemical Biological Center, Aberdeen Proving Ground, Aberdeen, MD, USA
| | - Morten O A Sommer
- Novo Nordisk Foundation Center for Biosustainability, Technical University of Denmark, Lyngby, Denmark
| | - Gautam Dantas
- Department of Pathology and Immunology, Washington University in St Louis School of Medicine, Saint Louis, MO, USA.
- The Edison Family Center for Genome Sciences and Systems Biology, Washington University in St Louis School of Medicine, Saint Louis, MO, USA.
- Department of Molecular Microbiology, Washington University in St Louis School of Medicine, Saint Louis, MO, USA.
- Department of Biomedical Engineering, Washington University in St Louis, Saint Louis, MO, USA.
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Villegas-Guzman P, Silva-Agredo J, Florez O, Giraldo-Aguirre AL, Pulgarin C, Torres-Palma RA. Selecting the best AOP for isoxazolyl penicillins degradation as a function of water characteristics: Effects of pH, chemical nature of additives and pollutant concentration. J Environ Manage 2017; 190:72-79. [PMID: 28039821 DOI: 10.1016/j.jenvman.2016.12.056] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/25/2016] [Revised: 12/20/2016] [Accepted: 12/21/2016] [Indexed: 05/14/2023]
Abstract
To provide new insights toward the selection of the most suitable AOP for isoxazolyl penicillins elimination, the degradation of dicloxacillin, a isoxazolyl penicillin model, was studied using different advanced oxidation processes (AOPs): ultrasound (US), photo-Fenton (UV/H2O2/Fe2+) and TiO2 photocatalysis (UV/TiO2). Although all processes achieved total removal of the antibiotic and antimicrobial activity, and increased the biodegradability level of the solutions, significant differences concerning the mineralization extend, the pH of the solution, the pollutant concentration and the chemical nature of additives were found. UV/TiO2 reached almost complete mineralization; while ∼10% mineralization was obtained for UV/H2O2/Fe2+ and practically zero for US. Effect of initial pH, mineral natural water and the presence of organic (glucose, 2-propanol and oxalic acid) were then investigated. UV/H2O2/Fe2+ and US processes were improved in acidic media, while natural pH favored UV/TiO2 system. According to both the nature of the added organic compound and the process, inhibition, no effect or enhancement of the degradation rate was observed. The degradation in natural mineral water showed contrasting results according to the antibiotic concentration: US process was enhanced at low concentration of dicloxacillin followed by detrimental effects at high substrate concentrations. A contrary effect was observed during photo-Fenton, while UV/TiO2 was inhibited in all of cases. Finally, a schema illustrating the enhancement or inhibiting effects of water matrix is proposed as a tool for selecting the best process for isoxazolyl penicillins degradation.
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Affiliation(s)
- Paola Villegas-Guzman
- Grupo de Investigación en Remediación Ambiental y Biocatálisis (GIRAB), Instituto de Química, Facultad de Ciencias Exactas y Naturales, Universidad de Antioquía UdeA, Calle 70 No. 52-21, Medellín, Colombia
| | - Javier Silva-Agredo
- Grupo de Investigación en Remediación Ambiental y Biocatálisis (GIRAB), Instituto de Química, Facultad de Ciencias Exactas y Naturales, Universidad de Antioquía UdeA, Calle 70 No. 52-21, Medellín, Colombia
| | - Oscar Florez
- Grupo de Investigación en Diseño y Formulación de Medicamentos, Cosméticos y Afines (DYFOMECO), Facultad de Química Farmacéutica, Universidad de Antioquia UdeA, Calle 70 No.52-21, Medellín, Colombia
| | - Ana L Giraldo-Aguirre
- Grupo de Investigación en Diseño y Formulación de Medicamentos, Cosméticos y Afines (DYFOMECO), Facultad de Química Farmacéutica, Universidad de Antioquia UdeA, Calle 70 No.52-21, Medellín, Colombia
| | - Cesar Pulgarin
- Ecole Polytechnique Fédérale de Lausanne, EPFL-SB-ISIC-GPAO, Station 6, CH-1015, Lausanne, Switzerland
| | - Ricardo A Torres-Palma
- Grupo de Investigación en Remediación Ambiental y Biocatálisis (GIRAB), Instituto de Química, Facultad de Ciencias Exactas y Naturales, Universidad de Antioquía UdeA, Calle 70 No. 52-21, Medellín, Colombia.
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Yang L, Zhang S, Chen Z, Wen Q, Wang Y. Maturity and security assessment of pilot-scale aerobic co-composting of penicillin fermentation dregs (PFDs) with sewage sludge. Bioresour Technol 2016; 204:185-191. [PMID: 26799590 DOI: 10.1016/j.biortech.2016.01.004] [Citation(s) in RCA: 8] [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] [Subscribe] [Scholar Register] [Received: 11/06/2015] [Revised: 12/31/2015] [Accepted: 01/05/2016] [Indexed: 05/05/2023]
Abstract
In this work, penicillin fermentation dregs (PFDs) and sewage sludge (SWS) were co-composted to analyze the possibility of recycling nutrients in PFDs. The temperature was maintained above 55°C for more than 3 days, and the final electrical conductivity (EC), pH and C/N all met the national standards in maturity. A nearly 100% removal of the residual penicillin was achieved, and the seed germination index (GI) increased from 0.02% to 83.54±3.1% by the end of the composting process. However, monitoring the quantity of antibiotic resistance genes (ARGs) showed that the logarithm of the number of copies of blaTEM increased from 4.17±0.19 at the initial phase to 8.92±0.27 by the end of the composting process, which means that there is a high risk for land use when using PFD compost products.
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Affiliation(s)
- Lian Yang
- State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology (SKLUWRE, HIT), Harbin 150090, PR China
| | - Shihua Zhang
- State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology (SKLUWRE, HIT), Harbin 150090, PR China
| | - Zhiqiang Chen
- State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology (SKLUWRE, HIT), Harbin 150090, PR China
| | - Qinxue Wen
- State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology (SKLUWRE, HIT), Harbin 150090, PR China.
| | - Yao Wang
- State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology (SKLUWRE, HIT), Harbin 150090, PR China
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Zhang Z, Zhao J, Yu C, Dong S, Zhang D, Yu R, Wang C, Liu Y. Evaluation of aerobic co-composting of penicillin fermentation fungi residue with pig manure on penicillin degradation, microbial population dynamics and composting maturity. Bioresour Technol 2015; 198:403-409. [PMID: 26409851 DOI: 10.1016/j.biortech.2015.09.005] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/02/2015] [Revised: 09/02/2015] [Accepted: 09/05/2015] [Indexed: 06/05/2023]
Abstract
Improper treatment of penicillin fermentation fungi residue (PFFR), one of the by-products of penicillin production process, may result in environmental pollution due to the high concentration of penicillin. Aerobic co-composting of PFFR with pig manure was determined to degrade penicillin in PFFR. Results showed that co-composting of PFFR with pig manure can significantly reduce the concentration of penicillin in PFFR, make the PFFR-compost safer as organic fertilizer for soil application. More than 99% of penicillin in PFFR were removed after 7-day composting. PFFR did not affect the composting process and even promote the activity of the microorganisms in the compost. Quantitative PCR (qPCR) indicated that the bacteria and actinomycetes number in the AC samples were 40-80% higher than that in the pig-manure compost (CK) samples in the same composting phases. This research indicated that the aerobic co-composting was a feasible PFFR treatment method.
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Affiliation(s)
- Zhenhua Zhang
- Nanjing Institute of Environmental Sciences, Ministry of Environmental Protection, Nanjing 210042, China
| | - Juan Zhao
- Department of Energy and Environment, Southeast University, Nanjing 210096, China
| | - Cigang Yu
- Nanjing Institute of Environmental Sciences, Ministry of Environmental Protection, Nanjing 210042, China
| | - Shanshan Dong
- Nanjing Institute of Environmental Sciences, Ministry of Environmental Protection, Nanjing 210042, China
| | - Dini Zhang
- Nanjing Institute of Environmental Sciences, Ministry of Environmental Protection, Nanjing 210042, China
| | - Ran Yu
- Department of Energy and Environment, Southeast University, Nanjing 210096, China
| | - Changyong Wang
- Nanjing Institute of Environmental Sciences, Ministry of Environmental Protection, Nanjing 210042, China
| | - Yan Liu
- Nanjing Institute of Environmental Sciences, Ministry of Environmental Protection, Nanjing 210042, China.
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Chen Z, Zhang S, Wen Q, Zheng J. Effect of aeration rate on composting of penicillin mycelial dreg. J Environ Sci (China) 2015; 37:172-178. [PMID: 26574101 DOI: 10.1016/j.jes.2015.03.020] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2015] [Revised: 03/10/2015] [Accepted: 03/11/2015] [Indexed: 06/05/2023]
Abstract
Pilot scale experiments with forced aeration were conducted to estimate effects of aeration rates on the performance of composting penicillin mycelial dreg using sewage sludge as inoculation. Three aeration rates of 0.15, 0.50 and 0.90L/(min·kg) organic matter (OM) were examined. The principal physicochemical parameters were monitored during the 32day composting period. Results showed that the higher aeration rate of 0.90L/(min·kg) did not corresponded to a longer thermophilic duration and higher rates of OM degradation; but the lower aeration rate of 0.15L/(min·kg) did induce an accumulation of NH4(+)-N contents due to the inhibition of nitrification. On the other hand, aeration rate has little effect on degradation of penicillin. The results show that the longest phase of thermophilic temperatures≥55°C, the maximum NO3(-)-N content and seed germination, and the minimum C/N ratio were obtained with 0.50L/(min·kg) OM. Therefore, aeration rates of 0.50L/(min·kg) OM can be recommended for composting penicillin mycelial dreg.
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Affiliation(s)
- Zhiqiang Chen
- State Key Laboratory of Urban Water Resource and Environment, School of Municipal and Environmental Engineering, Harbin Institute of Technology, Harbin 150090, China
| | - Shihua Zhang
- State Key Laboratory of Urban Water Resource and Environment, School of Municipal and Environmental Engineering, Harbin Institute of Technology, Harbin 150090, China; School of Civil Engineering and Architecture, Anhui University of Technology, Ma'anshan 243002, China.
| | - Qinxue Wen
- State Key Laboratory of Urban Water Resource and Environment, School of Municipal and Environmental Engineering, Harbin Institute of Technology, Harbin 150090, China
| | - Jun Zheng
- School of Civil Engineering and Architecture, Anhui University of Technology, Ma'anshan 243002, China
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35
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de Weck A, Bergmann KC, Ring J. Alain de Weck (1928-2013). Fribourg, Switzerland. Chem Immunol Allergy 2014; 100:346-349. [PMID: 24925418 DOI: 10.1159/000360061] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
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Wang FQ, Zhong J, Zhao Y, Xiao J, Liu J, Dai M, Zheng G, Zhang L, Yu J, Wu J, Duan B. Genome sequencing of high-penicillin producing industrial strain of Penicillium chrysogenum. BMC Genomics 2014; 15 Suppl 1:S11. [PMID: 24564352 PMCID: PMC4046689 DOI: 10.1186/1471-2164-15-s1-s11] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [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] [Indexed: 11/25/2022] Open
Abstract
BACKGROUND Due to the importance of Penicillium chrysogenum holding in medicine, the genome of low-penicillin producing laboratorial strain Wisconsin54-1255 had been sequenced and fully annotated. Through classical mutagenesis of Wisconsin54-1255, product titers and productivities of penicillin have dramatically increased, but what underlying genome structural variations is still little known. Therefore, genome sequencing of a high-penicillin producing industrial strain is very meaningful. RESULTS To reveal more insights into the genome structural variations of high-penicillin producing strain, we sequenced an industrial strain P. chrysogenum NCPC10086. By whole genome comparative analysis, we observed a large number of mutations, insertions and deletions, and structural variations. There are 69 new genes that not exist in the genome sequence of Wisconsin54-1255 and some of them are involved in energy metabolism, nitrogen metabolism and glutathione metabolism. Most importantly, we discovered a 53.7 Kb "new shift fragment" in a seven copies of determinative penicillin biosynthesis cluster in NCPC10086 and the arrangement type of amplified region is unique. Moreover, we presented two large-scale translocations in NCPC10086, containing genes involved energy, nitrogen metabolism and peroxysome pathway. At last, we found some non-synonymous mutations in the genes participating in homogentisate pathway or working as regulators of penicillin biosynthesis. CONCLUSIONS We provided the first high-quality genome sequence of industrial high-penicillin strain of P. chrysogenum and carried out a comparative genome analysis with a low-producing experimental strain. The genomic variations we discovered are related with energy metabolism, nitrogen metabolism and so on. These findings demonstrate the potential information for insights into the high-penicillin yielding mechanism and metabolic engineering in the future.
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Affiliation(s)
- Fu-Qiang Wang
- />New Drug Research and Development Center of North China Pharmaceutical Group Corporation, National Engineering Research Center of Microbial Medicine, Hebei Industry Microbial Metabolic Engineering & Technology Research Center, Shijiazhuang, Hebei 050015 China
| | - Jun Zhong
- />CAS Key Laboratory of Genome Sciences and Information, Beijing Institute of Genomics, Chinese Academy of Sciences, Beijing, 100101 China
- />University of Chinese Academy of Sciences, Beijing, 100049 China
| | - Ying Zhao
- />New Drug Research and Development Center of North China Pharmaceutical Group Corporation, National Engineering Research Center of Microbial Medicine, Hebei Industry Microbial Metabolic Engineering & Technology Research Center, Shijiazhuang, Hebei 050015 China
| | - Jingfa Xiao
- />CAS Key Laboratory of Genome Sciences and Information, Beijing Institute of Genomics, Chinese Academy of Sciences, Beijing, 100101 China
| | - Jing Liu
- />New Drug Research and Development Center of North China Pharmaceutical Group Corporation, National Engineering Research Center of Microbial Medicine, Hebei Industry Microbial Metabolic Engineering & Technology Research Center, Shijiazhuang, Hebei 050015 China
| | - Meng Dai
- />New Drug Research and Development Center of North China Pharmaceutical Group Corporation, National Engineering Research Center of Microbial Medicine, Hebei Industry Microbial Metabolic Engineering & Technology Research Center, Shijiazhuang, Hebei 050015 China
| | - Guizhen Zheng
- />New Drug Research and Development Center of North China Pharmaceutical Group Corporation, National Engineering Research Center of Microbial Medicine, Hebei Industry Microbial Metabolic Engineering & Technology Research Center, Shijiazhuang, Hebei 050015 China
| | - Li Zhang
- />New Drug Research and Development Center of North China Pharmaceutical Group Corporation, National Engineering Research Center of Microbial Medicine, Hebei Industry Microbial Metabolic Engineering & Technology Research Center, Shijiazhuang, Hebei 050015 China
| | - Jun Yu
- />CAS Key Laboratory of Genome Sciences and Information, Beijing Institute of Genomics, Chinese Academy of Sciences, Beijing, 100101 China
| | - Jiayan Wu
- />CAS Key Laboratory of Genome Sciences and Information, Beijing Institute of Genomics, Chinese Academy of Sciences, Beijing, 100101 China
| | - Baoling Duan
- />New Drug Research and Development Center of North China Pharmaceutical Group Corporation, National Engineering Research Center of Microbial Medicine, Hebei Industry Microbial Metabolic Engineering & Technology Research Center, Shijiazhuang, Hebei 050015 China
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Shiota S, Shimizu M, Sugiyama J, Morita Y, Mizushima T, Tsuchiya T. Mechanisms of Action of Corilagin and Tellimagrandin I That Remarkably Potentiate the Activity of β-Lactams against Methicillin-ResistantStaphylococcus aureus. Microbiol Immunol 2013; 48:67-73. [PMID: 14734860 DOI: 10.1111/j.1348-0421.2004.tb03489.x] [Citation(s) in RCA: 108] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Corilagin and tellimagrandin I are polyphenols isolated from the extract of Arctostaphylos uvaursi and Rosa canina L. (rose red), respectively. We have reported that corilagin and tellimagrandin I remarkably reduced the minimum inhibitory concentration (MIC) of beta-lactams in methicillin-resistant Staphylococcus aureus(MRSA). In this study, we investigated the effect of corilagin and tellimagrandin I on the penicillin binding protein 2 '(2a) (PBP2 '(PBP2a)) which mainly confers the resistance to beta-lactam antibiotics in MRSA. These compounds when added to the culture medium were found to decrease production of the PBP2 '(PBP2a) slightly. Using BOCILLIN FL, a fluorescent-labeled benzyl penicillin, we found that PBP2 '(PBP2a) in MRSA cells that were grown in medium containing corilagin or tellimagrandin I almost completely lost the ability to bind BOCILLIN FL. The binding activity of PBP2 and PBP3 were also reduced to some extent by these compounds. These results indicate that inactivation of PBPs, especially of PBP2 '(PBP2a), by corilagin or tellimagrandin I is the major reason for the remarkable reduction in the resistance level of beta-lactams in MRSA. Corilagin or tellimagrandin I suppressed the activity of beta-lactamase to some extent.
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Affiliation(s)
- Sumiko Shiota
- Department of Pathogenic Microbiology, School of Pharmacy, Shujitsu University, Okayama, Japan
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Marks LR, Clementi EA, Hakansson AP. Sensitization of Staphylococcus aureus to methicillin and other antibiotics in vitro and in vivo in the presence of HAMLET. PLoS One 2013; 8:e63158. [PMID: 23650551 PMCID: PMC3641093 DOI: 10.1371/journal.pone.0063158] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2013] [Accepted: 03/29/2013] [Indexed: 11/24/2022] Open
Abstract
HAMLET (human alpha-lactalbumin made lethal to tumor cells) is a protein-lipid complex from human milk with both tumoricidal and bactericidal activities. HAMLET exerts a rather specific bactericidal activity against some respiratory pathogens, with highest activity against Streptococcus pneumoniae, but lacks activity against most other bacterial pathogens, including Staphylococci. Still, ion transport associated with death in S. pneumoniae is also detected to a lower degree in insensitive organisms. In this study we demonstrate that HAMLET acts as an antimicrobial adjuvant that can increase the activity of a broad spectrum of antibiotics (methicillin, vancomycin, gentamicin and erythromycin) against multi-drug resistant Staphylococcus aureus, to a degree where they become sensitive to those same antibiotics, both in antimicrobial assays against planktonic and biofilm bacteria and in an in vivo model of nasopharyngeal colonization. We show that HAMLET exerts these effects specifically by dissipating the proton gradient and inducing a sodium-dependent calcium influx that partially depolarizes the plasma membrane, the same mechanism induced during pneumococcal death. These effects results in an increased cell associated binding and/or uptake of penicillin, gentamicin and vancomycin, especially in resistant stains. Finally, HAMLET inhibits the increased resistance of methicillin seen under antibiotic pressure and the bacteria do not become resistant to the adjuvant, which is a major advantageous feature of the molecule. These results highlight HAMLET as a novel antimicrobial adjuvant with the potential to increase the clinical usefulness of antibiotics against drug resistant strains of S. aureus.
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Affiliation(s)
- Laura R. Marks
- Department of Microbiology and Immunology, University at Buffalo, State University of New York, Buffalo, New York, United States of America
| | - Emily A. Clementi
- Department of Microbiology and Immunology, University at Buffalo, State University of New York, Buffalo, New York, United States of America
| | - Anders P. Hakansson
- Department of Microbiology and Immunology, University at Buffalo, State University of New York, Buffalo, New York, United States of America
- The Witebsky Center for Microbial Pathogenesis and Immunology, University at Buffalo, State University of New York, Buffalo, New York, United States of America
- New York State Center of Excellence in Bioinformatics and Life Sciences. University at Buffalo, State University of New York, Buffalo, New York, United States of America
- * E-mail:
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Wyres KL, Lambertsen LM, Croucher NJ, McGee L, von Gottberg A, Liñares J, Jacobs MR, Kristinsson KG, Beall BW, Klugman KP, Parkhill J, Hakenbeck R, Bentley SD, Brueggemann AB. The multidrug-resistant PMEN1 pneumococcus is a paradigm for genetic success. Genome Biol 2012; 13:R103. [PMID: 23158461 PMCID: PMC3580495 DOI: 10.1186/gb-2012-13-11-r103] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.8] [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: 08/23/2012] [Revised: 10/16/2012] [Accepted: 11/16/2012] [Indexed: 12/31/2022] Open
Abstract
BACKGROUND Streptococcus pneumoniae, also called the pneumococcus, is a major bacterial pathogen. Since its introduction in the 1940s, penicillin has been the primary treatment for pneumococcal diseases. Penicillin resistance rapidly increased among pneumococci over the past 30 years, and one particular multidrug-resistant clone, PMEN1, became highly prevalent globally. We studied a collection of 426 pneumococci isolated between 1937 and 2007 to better understand the evolution of penicillin resistance within this species. RESULTS We discovered that one of the earliest known penicillin-nonsusceptible pneumococci, recovered in 1967 from Australia, was the likely ancestor of PMEN1, since approximately 95% of coding sequences identified within its genome were highly similar to those of PMEN1. The regions of the PMEN1 genome that differed from the ancestor contained genes associated with antibiotic resistance, transmission and virulence. We also revealed that PMEN1 was uniquely promiscuous with its DNA, donating penicillin-resistance genes and sometimes many other genes associated with antibiotic resistance, virulence and cell adherence to many genotypically diverse pneumococci. In particular, we describe two strains in which up to 10% of the PMEN1 genome was acquired in multiple fragments, some as long as 32 kb, distributed around the recipient genomes. This type of directional genetic promiscuity from a single clone to numerous unrelated clones has, to our knowledge, never before been described. CONCLUSIONS These findings suggest that PMEN1 is a paradigm of genetic success both through its epidemiology and promiscuity. These findings also challenge the existing views about horizontal gene transfer among pneumococci.
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Affiliation(s)
- Kelly L Wyres
- Department of Zoology, University of Oxford, South Parks Road, Oxford, OX1 3PS, UK
| | - Lotte M Lambertsen
- Department of Microbiology Surveillance and Research, Statens Serum Institut, 5 Artillerivej, DK 2300 Copenhagen S, Denmark
| | - Nicholas J Croucher
- Pathogen Genomics Team, Wellcome Trust Sanger Institute, Wellcome Trust Genome Campus, Hinxton, Cambridge, CB10 1SA, UK
| | - Lesley McGee
- Streptococcus Laboratory, Centers for Disease Control and Prevention, 1600 Clifton Rd, Atlanta, Georgia, 30333, USA
| | - Anne von Gottberg
- Centre for Respiratory Diseases and Meningitis, National Institute for Communicable Diseases, Sandringham, Johannesburg 2131, South Africa
| | - Josefina Liñares
- Department of Microbiology, Bellvitge Hospital-CIBERes-IDIBELL-UB, Feixa Llarga s/n, 08907 Barcelona, Spain
| | - Michael R Jacobs
- Department of Pathology, Case Western Reserve University, Cleveland, OH 44106, USA
| | - Karl G Kristinsson
- Clinical Microbiology Department, Landspitali University Hospital and University of Iceland, 101 Reykjavik, Iceland
| | - Bernard W Beall
- Streptococcus Laboratory, Centers for Disease Control and Prevention, 1600 Clifton Rd, Atlanta, Georgia, 30333, USA
| | - Keith P Klugman
- Hubert Department of Global Health Epidemiology, Rollins School of Public Health, 1518 Clifton Road NE, Atlanta, GA 30322, USA
| | - Julian Parkhill
- Pathogen Genomics Team, Wellcome Trust Sanger Institute, Wellcome Trust Genome Campus, Hinxton, Cambridge, CB10 1SA, UK
| | - Regine Hakenbeck
- Department of Microbiology, University Kaiserslautern, Paul-Ehrlich-Straße, 67663 Kaiserslautern, Germany
| | - Stephen D Bentley
- Pathogen Genomics Team, Wellcome Trust Sanger Institute, Wellcome Trust Genome Campus, Hinxton, Cambridge, CB10 1SA, UK
| | - Angela B Brueggemann
- Department of Zoology, University of Oxford, South Parks Road, Oxford, OX1 3PS, UK
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Abstract
OXA-48-type carbapenem-hydrolysing class D β-lactamases are increasingly reported in enterobacterial species. To date, six OXA-48-like variants have been identified, with OXA-48 being the most widespread. They differ by a few amino acid substitutions or deletions (one to five amino acids). The enzymes hydrolyse penicillins at a high level and carbapenems at a low level, sparing broad-spectrum cephalosporins, and are not susceptible to β-lactamase inhibitors. When combining permeability defects, OXA-48-like producers may exhibit a high level of resistance to carbapenems. OXA-163 is an exception, hydrolysing broad-spectrum cephalosporins but carbapenems at a very low level, and being susceptible to β-lactamase inhibitors. The bla(OXA-48)-type genes are always plasmid-borne and have been identified in association with insertion sequences involved in their acquisition and expression. The current spread of the bla(OXA-48) gene is mostly linked to the dissemination of a single IncL/M-type self-transferable plasmid of 62 kb that does not carry any additional resistance gene. OXA-48-type carbapenemases have been identified mainly from North African countries, the Middle East, Turkey and India, those areas constituting the most important reservoirs; however, occurrence of OXA-48 producers in European countries is now well documented, with some reported hospital outbreaks. Since many OXA-48-like producers do not exhibit resistance to broad-spectrum cephalosporins, or only decreased susceptibility to carbapenems, their recognition and detection can be challenging. Adequate screening and detection methods are therefore required to prevent and control their dissemination.
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Affiliation(s)
- Laurent Poirel
- Service de Bactériologie-Virologie, INSERM U914 Emerging Resistance to Antibiotics, Hôpital de Bicêtre, Faculté de Médecine et Université Paris-Sud, 94275 K.-Bicêtre, France.
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Abstract
During the production of penicillin, a mass of waste bacterial residue is generated. In the past, the bacterial residues have been used for food additives. Unfortunately, doubts of their suitability as a feedstock have been raised because of the small amount of antibiotics and the degradation products remaining in the bacterial residues. So, penicillin bacterial residue is one of the hazardous wastes. Therefore, penicillin bacterial residue should be managed in accordance with the hazardous waste. To get a right method, the penicillin bacterial residue was characterized.
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Affiliation(s)
- Bin Guo
- School of Environmental Science and Engineering, Hebei University of Science and Technology, Shijiazhuang, Hebei, People's Republic of China
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42
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Amoroso A, Boudet J, Berzigotti S, Duval V, Teller N, Mengin-Lecreulx D, Luxen A, Simorre JP, Joris B. A peptidoglycan fragment triggers β-lactam resistance in Bacillus licheniformis. PLoS Pathog 2012; 8:e1002571. [PMID: 22438804 PMCID: PMC3305447 DOI: 10.1371/journal.ppat.1002571] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.5] [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: 01/16/2011] [Accepted: 01/24/2012] [Indexed: 01/29/2023] Open
Abstract
To resist to β-lactam antibiotics Eubacteria either constitutively synthesize a β-lactamase or a low affinity penicillin-binding protein target, or induce its synthesis in response to the presence of antibiotic outside the cell. In Bacillus licheniformis and Staphylococcus aureus, a membrane-bound penicillin receptor (BlaR/MecR) detects the presence of β-lactam and launches a cytoplasmic signal leading to the inactivation of BlaI/MecI repressor, and the synthesis of a β-lactamase or a low affinity target. We identified a dipeptide, resulting from the peptidoglycan turnover and present in bacterial cytoplasm, which is able to directly bind to the BlaI/MecI repressor and to destabilize the BlaI/MecI-DNA complex. We propose a general model, in which the acylation of BlaR/MecR receptor and the cellular stress induced by the antibiotic, are both necessary to generate a cell wall-derived coactivator responsible for the expression of an inducible β-lactam-resistance factor. The new model proposed confirms and emphasizes the role of peptidoglycan degradation fragments in bacterial cell regulation.
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Affiliation(s)
- Ana Amoroso
- Centre d'Ingénierie des Protéines, Institut de Chimie B6A, Sart-Tilman, Université de Liège, Liège, Belgium
- Cátedra de Microbiología, Facultad de Farmacia y Bioquímica Universidad de Buenos Aires, Buenos Aires, Argentina
| | - Julien Boudet
- Institut de Biologie Structurale Jean-Pierre Ebel, CEA-CNRS-UJF, Grenoble, France
| | - Stéphanie Berzigotti
- Centre d'Ingénierie des Protéines, Institut de Chimie B6A, Sart-Tilman, Université de Liège, Liège, Belgium
| | - Valérie Duval
- Centre d'Ingénierie des Protéines, Institut de Chimie B6A, Sart-Tilman, Université de Liège, Liège, Belgium
| | - Nathalie Teller
- Chimie Organique de Synthèse, Institut de Chimie B6A, Sart-Tilman. Université de Liège, Liège, Belgium
| | - Dominique Mengin-Lecreulx
- Université de Paris-Sud 11 and CNRS, Institut de Biochimie et Biophysique Moléculaire et Cellulaire, Laboratoire des Enveloppes Bactériennes et Antibiotiques, UMR 8619, Orsay, France
| | - André Luxen
- Chimie Organique de Synthèse, Institut de Chimie B6A, Sart-Tilman. Université de Liège, Liège, Belgium
| | - Jean-Pierre Simorre
- Institut de Biologie Structurale Jean-Pierre Ebel, CEA-CNRS-UJF, Grenoble, France
| | - Bernard Joris
- Centre d'Ingénierie des Protéines, Institut de Chimie B6A, Sart-Tilman, Université de Liège, Liège, Belgium
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Buyck JM, Guénard S, Plésiat P, Tulkens PM, Van Bambeke F. Role of MexAB-OprM in intrinsic resistance of Pseudomonas aeruginosa to temocillin and impact on the susceptibility of strains isolated from patients suffering from cystic fibrosis. J Antimicrob Chemother 2012; 67:771-5. [PMID: 22218683 DOI: 10.1093/jac/dkr543] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Mathers JJ, Flick SC, Cox LA. Longer-duration uses of tetracyclines and penicillins in U.S. food-producing animals: Indications and microbiologic effects. Environ Int 2011; 37:991-1004. [PMID: 21435723 DOI: 10.1016/j.envint.2011.01.014] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/02/2010] [Revised: 01/26/2011] [Accepted: 01/27/2011] [Indexed: 05/12/2023]
Abstract
We review and analyze regulatory categories for longer duration of use (defined as ≥ 7 day) tetracyclines (TCs) and penicillins (PNs) approved for U.S. livestock and poultry, together with scientific studies, surveillance programs and risk assessments pertaining to antimicrobial resistance. Indications listed on a government database were grouped into three broad categories according to the terminology used to describe their use: disease control (C), treatment (T) and growth improvement (G). Consistent with mostly therapeutic uses, the majority (86%) of listed indications had C and/or T terms. Several studies showed interruption of early disease stages in animals and modulation of intestinal microflora. Longer-duration exposures are consistent with bacteriostatic modes of action, where adequate exposure time as well as concentration is needed for sufficient antimicrobial activity. Other effects identified included reduced animal pathogen prevalence, toxin formation, inflammation, environmental impacts, improved animal health, reproductive measures, nutrient utilization, and others. Several animal studies have shown a limited, dose-proportionate, selective increase in resistance prevalence among commensal animal bacteria following longer-duration exposures. Pathogen surveillance programs showed overall stable or declining resistance trends among sentinel bacteria. Quantitative, microbiologically detailed resistance risk assessments indicate small probabilities of human treatment failure due to resistance under current conditions. Evaluations of longer-duration uses of TCs, PNs, and other antimicrobial classes used in food-producing animals should consider mechanisms of activity, known individual- and population-level health and waste reduction effects in addition to resistance risks.
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45
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Dayalan SAJ, Darwin P, Prakash S. Comparative study on production, purification of penicillin by Penicillium chrysogenum isolated from soil and citrus samples. Asian Pac J Trop Biomed 2011; 1:15-9. [PMID: 23569718 PMCID: PMC3609156 DOI: 10.1016/s2221-1691(11)60061-0] [Citation(s) in RCA: 6] [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] [Subscribe] [Scholar Register] [Received: 12/07/2010] [Revised: 12/13/2010] [Accepted: 01/28/2011] [Indexed: 10/28/2022] Open
Abstract
OBJECTIVE To explore various unexplored locations where Penicillium spp. would be available and study the production of penicillin from the isolated Penicillium spp. in different media with altered carbohydrate source. METHODS The collected soil samples were screened for the isolation of Penicillium chrysogenum (P. chrysogenum) by soil dilution plate. The isolated Penicillium species were further grown in different production media with changes in the carbohydrate source. The extracted penicillin from various isolates was analyzed by HPLC for the efficacy of the product. Further the products were screened with various bacterial species including methicillin resistant Staphylococcus aureus (MRSA). And the work was extended to find the possible action on MRSA, along with characterization using other pathogens. RESULTS From the various soil and citrus samples used for analysis, only the soil sample from Government General Hospital of Bangalore, India, and Sanjay Gandhi Hospital, Bangalore, India, showed some potential growth of the desired fungi P. chrysogenum. Different production media showed varied range of growth of Penicillium. Optimum production of penicillin was obtained in maltose which proved maximum zone of inhibition during assay. Characterization of penicillin on pathogens, like wild Escherichia coli strain, Klebsiella spp., and MRSA, gave quite interesting results such as no activity on the later strain as it is resistant. HPLC data provided the analytical and confirmation details of the penicillin produced. Accordingly, the penicillin produced from the soil sample of Government General Hospital had the high milli absorbance unit of 441.5 mAu compared with that of the penicillin produced from Sanjay Gandhi Hospital sample, 85.52 mAu. Therefore, there was a considerable change in quantity of the penicillin produced from both the samples. CONCLUSIONS The Penicillium spp. could be possibly rich in hospital contaminants and its environments. This research focuses on various unexplored sources of medical ailments, and also shows that the growth of penicillin is high in maltose rich media that could possibly enhance the growth.
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Affiliation(s)
- S Anto Jeya Dayalan
- Department of Biotechnology, Udaya School of Engineering, Ammandivilai Post-629204, Kanyakumari District, Tamil Nadu, India
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46
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Abstract
The inactivation of penicillin K is more rapid in the renal-ligated rabbit than in the renal-ligated, eviscerate preparation. Inactivation of penicillin K occurs in the presence of surviving liver and kidney slices. Small amounts of penicillin G were inactivated by liver slices; larger amounts disappeared in the presence of kidney slices. The inactivation of penicillin K in the presence of rabbit liver and kidney slices is demonstrable anaerobically as well as aerobically.
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47
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48
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Gidijala L, Kiel JAKW, Douma RD, Seifar RM, van Gulik WM, Bovenberg RAL, Veenhuis M, van der Klei IJ. An engineered yeast efficiently secreting penicillin. PLoS One 2009; 4:e8317. [PMID: 20016817 PMCID: PMC2789386 DOI: 10.1371/journal.pone.0008317] [Citation(s) in RCA: 67] [Impact Index Per Article: 4.5] [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: 09/09/2009] [Accepted: 11/24/2009] [Indexed: 11/18/2022] Open
Abstract
This study aimed at developing an alternative host for the production of penicillin (PEN). As yet, the industrial production of this beta-lactam antibiotic is confined to the filamentous fungus Penicillium chrysogenum. As such, the yeast Hansenula polymorpha, a recognized producer of pharmaceuticals, represents an attractive alternative. Introduction of the P. chrysogenum gene encoding the non-ribosomal peptide synthetase (NRPS) delta-(L-alpha-aminoadipyl)-L-cysteinyl-D-valine synthetase (ACVS) in H. polymorpha, resulted in the production of active ACVS enzyme, when co-expressed with the Bacillus subtilis sfp gene encoding a phosphopantetheinyl transferase that activated ACVS. This represents the first example of the functional expression of a non-ribosomal peptide synthetase in yeast. Co-expression with the P. chrysogenum genes encoding the cytosolic enzyme isopenicillin N synthase as well as the two peroxisomal enzymes isopenicillin N acyl transferase (IAT) and phenylacetyl CoA ligase (PCL) resulted in production of biologically active PEN, which was efficiently secreted. The amount of secreted PEN was similar to that produced by the original P. chrysogenum NRRL1951 strain (approx. 1 mg/L). PEN production was decreased over two-fold in a yeast strain lacking peroxisomes, indicating that the peroxisomal localization of IAT and PCL is important for efficient PEN production. The breakthroughs of this work enable exploration of new yeast-based cell factories for the production of (novel) beta-lactam antibiotics as well as other natural and semi-synthetic peptides (e.g. immunosuppressive and cytostatic agents), whose production involves NRPS's.
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Affiliation(s)
- Loknath Gidijala
- Molecular Cell Biology, Groningen Biomolecular Sciences and Biotechnology Institute (GBB), University of Groningen, Haren, The Netherlands
- Kluyver Centre for Genomics of Industrial Fermentation, Delft, The Netherlands
| | - Jan A. K. W. Kiel
- Molecular Cell Biology, Groningen Biomolecular Sciences and Biotechnology Institute (GBB), University of Groningen, Haren, The Netherlands
- Kluyver Centre for Genomics of Industrial Fermentation, Delft, The Netherlands
| | - Rutger D. Douma
- Kluyver Centre for Genomics of Industrial Fermentation, Delft, The Netherlands
- Department of Biotechnology, Faculty of Applied Sciences, Delft University of Technology, Delft, The Netherlands
| | - Reza M. Seifar
- Kluyver Centre for Genomics of Industrial Fermentation, Delft, The Netherlands
- Department of Biotechnology, Faculty of Applied Sciences, Delft University of Technology, Delft, The Netherlands
| | - Walter M. van Gulik
- Kluyver Centre for Genomics of Industrial Fermentation, Delft, The Netherlands
- Department of Biotechnology, Faculty of Applied Sciences, Delft University of Technology, Delft, The Netherlands
| | - Roel A. L. Bovenberg
- DSM Biotechnology Centre, Delft, The Netherlands
- Synthetic Biology and Cell Engineering, Groningen Biomolecular Sciences and Biotechnology Institute (GBB), University of Groningen, Haren, The Netherlands
| | - Marten Veenhuis
- Molecular Cell Biology, Groningen Biomolecular Sciences and Biotechnology Institute (GBB), University of Groningen, Haren, The Netherlands
- Kluyver Centre for Genomics of Industrial Fermentation, Delft, The Netherlands
| | - Ida J. van der Klei
- Molecular Cell Biology, Groningen Biomolecular Sciences and Biotechnology Institute (GBB), University of Groningen, Haren, The Netherlands
- Kluyver Centre for Genomics of Industrial Fermentation, Delft, The Netherlands
- * E-mail:
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Ryrfeldt A, Bodin NO, Hansson E. Biliary excretion of ampicillin, azidocillin and benzylpenicillin in the rat. Acta Pharmacol Toxicol (Copenh) 2009; 33:219-28. [PMID: 4800784 DOI: 10.1111/j.1600-0773.1973.tb02009.x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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50
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Abstract
Multidrug resistance-associated protein 2 (MRP2) is associated with active drug efflux and may influence oral bioavailability of common classes of drugs. MRP2 expression demonstrates plasticity. Caco-2 cells, a routine in vitro model for predicting oral bioavailability, are often cultured in media containing antibiotics. We have investigated whether exposure of Caco-2 cells to two common antibiotic regimes alters MRP2 functional expression. Caco-2 cells were grown in the presence or absence of either gentamicin or penicillin-streptomycin for up to 9 weeks. MRP2 functional activity was assessed by calcein efflux across the apical membrane. MRP2 protein expression was determined by immunoblots. Neither antibiotic regime resulted in consistent changes in calcein efflux across the apical membrane (reflecting MRP2 activity) or basolateral membrane (reflecting MRP3 and possibly MRP6 activity) of Caco-2 cells. MRP2 protein expression also showed no change in response to antibiotic exposure. Routine exposure of Caco-2 cells to penicillin-streptomycin or gentamicin does not affect apical MRP2 functional activity in intestinal enterocytic Caco-2 cells. Extrapolating these results to the situation in vivo suggests that the oral bioavailability of MRP substrates is not predicted to be influenced by recent courses of antibiotics.
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Affiliation(s)
- Hannah Prime-Chapman
- Institute for Cell and Molecular Biosciences, University of Newcastle, Medical School, Newcastle upon Tyne NE2 4HH, UK
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