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Pu S, Shi C, Lv C, Xu K, Hou X, Wu L. Tb 3+-Based Off-On Fluorescent Platform for Multicolor and Dosage-Sensitive Visualization of Bacterial Spore Marker. Anal Chem 2023; 95:8137-8144. [PMID: 37167590 DOI: 10.1021/acs.analchem.3c01542] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
Developing a novel strategy for the sensitive and rapid detection of pathogenic bacterial spores in field or on-site settings will be helpful in minimizing their potential threats to human health, environmental safety, and food safety. In this study, Tb3+ was combined with glutathione (GSH)-modified copper nanoclusters (CuNCs), and an aggregation-induced emission (AIE) fluorescent probe based on Tb-GSH-CuNCs was fabricated for dipicolinic acid (DPA, a pathogenic bacterial spore marker) sensing. Making use of the competitive binding of Tb3+ between GSH-CuNCs and DPA, a multicolor sensing of DPA was facilely realized without introducing fluorescent materials as the reference. Due to an "off-on" response mechanism of the AIE fluorescent probe, this multicolor response to DPA exhibited a feature of rich color gradients and highly discriminative color change, allowing a dosage-sensitive visual quantification of DPA. The DPA with a concentration even as low as 0.5 μM can still be identified by the naked eye. Moreover, together with a smartphone app, which can extract the R (red), G (green), and B (blue) values from the probe system, a portable platform can be established for sensitive DPA quantification in the range of 0.5-70 μM, showing great potential for the practical monitoring of DPA in field or on-site settings.
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Affiliation(s)
- Shan Pu
- Analytical & Testing Center, Sichuan University, Chengdu, Sichuan 610064, P. R. China
| | - Chaoting Shi
- Analytical & Testing Center, Sichuan University, Chengdu, Sichuan 610064, P. R. China
| | - Caizhi Lv
- Analytical & Testing Center, Sichuan University, Chengdu, Sichuan 610064, P. R. China
| | - Kailai Xu
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu, Sichuan 610064, P. R. China
| | - Xiandeng Hou
- Analytical & Testing Center, Sichuan University, Chengdu, Sichuan 610064, P. R. China
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu, Sichuan 610064, P. R. China
| | - Lan Wu
- Analytical & Testing Center, Sichuan University, Chengdu, Sichuan 610064, P. R. China
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2
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Pacheco M, Dikec J, Winckler P, Coelho C, Perrier-Cornet JM. Spectroscopic and microscopic characterization of dipicolinic acid and its salt photoproducts - A UVc effect study on DPA in solution and in bacterial spores. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2022; 280:121502. [PMID: 35752036 DOI: 10.1016/j.saa.2022.121502] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/05/2022] [Revised: 06/10/2022] [Accepted: 06/12/2022] [Indexed: 06/15/2023]
Abstract
Bacterial spores can cause significant problems such as food poisoning (like neurotoxin or emetic toxin) or serious illnesses (like anthrax or botulism). This dormant form of bacteria, made of several layers of barriers which provide extreme resistance to many abiotic stresses (radiation, temperature, pressure, etc.), are difficult to investigate in situ. To better understand the biological and chemical mechanisms involved and specific to spores resistance, the acquisition of environmental parameters is necessary. For that purpose, our research has been focused on the detection and analysis of a unique spore component, dipicolinic acid (DPA), used as the main in situ metabolite for sporulating bacteria detection. In its native form, DPA is only weakly fluorescent but after Ultraviolet irradiation at the wavelength of 254 nm (UVc), DPA photoproducts (DPAp) exhibit a remarkable fluorescence signal. These photoproducts are rarely identified and part of this study gives new insights offered by mass spectrometry (MS) in the determination of DPA photoproducts. Thanks to DPA assay techniques and fluorescence spectrometry, we highlighted the instability of photoproducts and introduced new assumptions on the effects of UVc on DPA. Studies in spectroscopy and microscopy allowed us to better understand these native probes in bacterial spores and will allow the implementation of a new method for studying the physico-chemical parameters of spore resistance.
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Affiliation(s)
- Maxime Pacheco
- UMR Procédés Alimentaires et Microbiologiques, L'Institut Agro Dijon, Université de Bourgogne Franche-Comté, 1, Esplanade Erasme, 21000 Dijon, France
| | - Jonathan Dikec
- UMR Procédés Alimentaires et Microbiologiques, L'Institut Agro Dijon, Université de Bourgogne Franche-Comté, 1, Esplanade Erasme, 21000 Dijon, France
| | - Pascale Winckler
- UMR Procédés Alimentaires et Microbiologiques, L'Institut Agro Dijon, Université de Bourgogne Franche-Comté, 1, Esplanade Erasme, 21000 Dijon, France; Dimacell Imaging Facility, L'Institut Agro Dijon, Université de Bourgogne Franche-Comté, 1 Esplanade Erasme, 21000 Dijon, France
| | - Christian Coelho
- Université Clermont Auvergne, INRAE, VetAgro Sup campus agronomique de Lempdes, UMR F, 15000 Aurillac, France
| | - Jean-Marie Perrier-Cornet
- UMR Procédés Alimentaires et Microbiologiques, L'Institut Agro Dijon, Université de Bourgogne Franche-Comté, 1, Esplanade Erasme, 21000 Dijon, France; Dimacell Imaging Facility, L'Institut Agro Dijon, Université de Bourgogne Franche-Comté, 1 Esplanade Erasme, 21000 Dijon, France.
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Ge M, Zhao W, Han Y, Gai H, Zong C. Contactless and robust dielectric microspheres-assisted surface-enhanced Raman scattering sensitivity improvement for anthrax biomarker detection. Front Chem 2022; 10:1057241. [PMID: 36458159 PMCID: PMC9705956 DOI: 10.3389/fchem.2022.1057241] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2022] [Accepted: 10/27/2022] [Indexed: 11/16/2022] Open
Abstract
This report presents a contactless and robust dielectric microspheres (DMs)-assisted surface enhanced Raman scattering (SERS) enhancement method to improve SERS detection sensitivity detection sensitivity. DMs that could focus and collect light were embedded within the polydimethylsiloxane (PDMS) film to avoid direct contact with the analytical solution and improve detection reliability. The as prepared DMs embedded PDMS DMs PD MS film was integrated with a microfluidic technique to enhance the SERS signal of a liquid substrate. Detection in microfluidic systems can reduce reagent consumption, shorten assay time, and avoid evaporation of the colloid substrate solution. The robustness and potential influencing factors of DMs PDMS film assisted SERS enhancement (DERS) were evaluated using 4-aminothiophenol (4-ATP) as the Raman probe. The sensing performance of the proposed method toward dipicolinic acid (DPA) was evaluated, and an evident signal intensification was obtained. Remarkably, the DMs PDMS film can also be implemented on solid substrates. A proof-of-concept experiment was performed by covering the DMs PDMS film directly over an AgNPs@Si solid substrate wherein a 5.7-fold sensitivity improvement was achieved.
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Yadav U, Abbas Z, Butcher RJ, Patra AK. A luminescent terbium( iii) probe as an efficient ‘Turn-ON’ sensor for dipicolinic acid, a Bacillus Anthracis biomarker. NEW J CHEM 2022. [DOI: 10.1039/d2nj03437a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
This work drives the potential of lanthanide luminescence in the quantification and detection of the B. Anthracis bacterial spore by targeting dipicolinic acid (DPA), a principal component of anthrax spores.
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Affiliation(s)
- Usha Yadav
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur 208016, Uttar Pradesh, India
| | - Zafar Abbas
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur 208016, Uttar Pradesh, India
| | - Ray J. Butcher
- Department of Chemistry, Howard University, Washington, DC 20059, USA
| | - Ashis K. Patra
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur 208016, Uttar Pradesh, India
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Alp M, Pamuk Algi M, Algi F. Eu(III)-DO3A and BODIPY dyad as a chemosensor for anthrax biomarker. LUMINESCENCE 2021; 36:1953-1960. [PMID: 34337847 DOI: 10.1002/bio.4129] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2021] [Revised: 07/21/2021] [Accepted: 07/29/2021] [Indexed: 12/14/2022]
Abstract
The sensitive and selective determination of Bacillus anthracis spores before the infection is vital for human health and safety. Dipicolinic acid (DPA) is an excellent biomarker due to its presence in the nucleus of bacterial spores at high concentrations (up to 1 M, about 15% dry weight). In the present work, a new molecular chemosensor 1, based on europium(III)-DO3A and BODIPY dyad, is developed to detect DPA in phosphate-buffered saline (PBS) buffered solution and tap water samples. Also, 1 can be used as a ratiometric optical chemosensor to track DPA.
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Affiliation(s)
- Meltem Alp
- Department of Biotechnology & ASUBTAM Memduh Bilmez BioNanoTech Laboratory, Aksaray University, Aksaray, Turkey
| | - Melek Pamuk Algi
- Department of Chemistry & ASUBTAM Memduh Bilmez BioNanoTech Laboratory, Aksaray University, Aksaray, Turkey
| | - Fatih Algi
- Department of Biotechnology & ASUBTAM Memduh Bilmez BioNanoTech Laboratory, Aksaray University, Aksaray, Turkey
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Jia L, Chen X, Xu J, Zhang L, Guo S, Bi N, Zhu T. A smartphone-integrated multicolor fluorescence probe of bacterial spore biomarker: The combination of natural clay material and metal-organic frameworks. JOURNAL OF HAZARDOUS MATERIALS 2021; 402:123776. [PMID: 33254787 DOI: 10.1016/j.jhazmat.2020.123776] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/02/2020] [Revised: 08/15/2020] [Accepted: 08/18/2020] [Indexed: 06/12/2023]
Abstract
The metal-organic frameworks (MOFs) functionalized palygorskite (Pal) hybrid as a novel multicolor fluorescence probe for the detection of bacterial spore biomarker-dipicolinic acid (DPA), had been prepared via in-situ growth. The MOFs can effectively encapsulate dye molecules on the surface of Pal, and the rich carboxyl groups on its surface can coordinate with europium ions (Eu3+), forming a highly sensitive recognition group. The results indicated that the limit of detection (LOD) of this multicolor fluorescence probe was as low as 9.3 nM and was obviously lower than the amount of anthrax spores infecting the human body (60 μM). Moreover, a wide linear range from 0 to 35 μM was obtained. The high specific surface area of Pal, as well as the permanent porosity and suitable binding sites of Eu3+-doped MOFs may play a major role in the sensitivity and linear detection range. The multicolor fluorescence strategy made full use of the diversity of fluorescence signals collected by dye molecules and lanthanide ions, which can realize the real-time and on-site detection through the smartphone with a color-scanning application (APP). The practicability of this probe was further verified by detecting DPA released by non-infectious Bacillus subtilis.
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Affiliation(s)
- Lei Jia
- College of Chemistry and Chemical Engineering, Henan Polytechnic University, No. 2001 Shiji Road Jiaozuo, Henan, 454000, China
| | - Xiangzhen Chen
- College of Chemistry and Chemical Engineering, Henan Polytechnic University, No. 2001 Shiji Road Jiaozuo, Henan, 454000, China
| | - Jun Xu
- College of Chemistry and Chemical Engineering, Henan Polytechnic University, No. 2001 Shiji Road Jiaozuo, Henan, 454000, China.
| | - Lina Zhang
- College of Chemistry and Chemical Engineering, Henan Polytechnic University, No. 2001 Shiji Road Jiaozuo, Henan, 454000, China
| | - Shengli Guo
- College of Chemistry and Chemical Engineering, Henan Polytechnic University, No. 2001 Shiji Road Jiaozuo, Henan, 454000, China
| | - Ning Bi
- College of Chemistry and Chemical Engineering, Henan Polytechnic University, No. 2001 Shiji Road Jiaozuo, Henan, 454000, China
| | - Taofeng Zhu
- Department of Pulmonary and Critical Care Medicine, The Affiliated Yixing Hospital of Jiangsu University, No.75, Tongzhenguan Road, Yixing, Jiangsu, 214200, China.
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Yi K, Zhang X, Zhang L. Eu 3+@metal-organic frameworks encapsulating carbon dots as ratiometric fluorescent probes for rapid recognition of anthrax spore biomarker. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 743:140692. [PMID: 32653714 DOI: 10.1016/j.scitotenv.2020.140692] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/28/2020] [Revised: 06/08/2020] [Accepted: 06/30/2020] [Indexed: 06/11/2023]
Abstract
Anthrax spores pose a serious threat to human well-being and life, so it is highly desirable to develop a rapid, sensitive, and selective quantitative assay of calcium pyridine dicarboxylate (CaDPA) as a biomarker of anthrax spores. Herein, carbon dots (CDs) chelated Eu3+@metal-organic framework (Eu-MOFs) as dual-emissive ratiometric fluorescent (RF) probe was successfully fabricated by a simple one-pot in situ selective self-assembly synthetic strategy. The developed RF probe has an effective self-calibration function, which performs a highly sensitive and selective recognition of CaDPA in water and human serum sample. The blue-emitting CDs was employed as an effective fluorescence reference, while the Eu-MOFs exhibited enhanced red fluorescence signal through the coordination interaction with CaDPA chromophore. The sensing mechanism is attributed to that CaDPA can sensitize Eu3+ intrinsic luminescence due to the energy transfer from CaDPA to Eu3+. What's more interesting is that with the continuous drop of CaDPA, the emission color of CDs@Eu-MOF changes from blue to red. The results revealed that CDs@Eu-MOFs RF probe can detect CaDPA effectively in the range of 8-170 μg/L with good linear relationship, and exhibited a remarkable selectivity for CaDPA. More interestingly, a paper-based probe has also been devised for on-site detection of CaDPA. In addition, CaDPA is used as input signal to construct an IHIBITION logic gate device which performs the "off-on" mode. The constructed CDs@Eu-MOF probe can achieve exceptionally rapid, highly sensitive and selective detection of CaDPA, which can further expand the application prospects in environmental and biological analysis.
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Affiliation(s)
- Kuiyu Yi
- College of Chemistry, Liaoning University, 66 Chongshan Middle Road, Shenyang, Liaoning 110036, People's Republic of China
| | - Xiaoting Zhang
- College of Chemistry, Liaoning University, 66 Chongshan Middle Road, Shenyang, Liaoning 110036, People's Republic of China
| | - Lei Zhang
- College of Chemistry, Liaoning University, 66 Chongshan Middle Road, Shenyang, Liaoning 110036, People's Republic of China.
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8
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Fluorescence of copper(I) and mixed valence copper(I/II) complexes with dipicolinic acid and their catalytic activity on catechol oxidation. Inorganica Chim Acta 2020. [DOI: 10.1016/j.ica.2019.119209] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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9
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Cheng ZH, Liu X, Zhang SQ, Yang T, Chen ML, Wang JH. Placeholder Strategy with Upconversion Nanoparticles-Eriochrome Black T Conjugate for a Colorimetric Assay of an Anthrax Biomarker. Anal Chem 2019; 91:12094-12099. [PMID: 31434488 DOI: 10.1021/acs.analchem.9b03342] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
The timely warning of the germination of bacterial spores and their prevention are highly important to minimize their potential detrimental effects and for disease control. Thus, a sensitive and selective assay of biomarkers is most desirable. In this work, a nanoprobe is constructed by conjugating lanthanide upconversion nanoparticles (UCNPs) with sodium tripolyphosphate (TPP) and eriochrome black T (EBT). The nanoprobe, UCNPs-TPP/EBT, serves as a platform for the detection of the anthrax biomarker, dipicolinic acid (DPA). In principle, DPA displaces EBT from the UCNPs-TPP/EBT nanoconjugate, resulting in a color change from magenta to blue because of the release of free EBT into the aqueous solution. The binding sites on UCNPs are partly preblocked with TPP as the placeholder molecule, leaving a desired number of binding sites for EBT conjugation. On the basis of this dye displacement reaction, a novel colorimetric assay protocol for DPA is developed, deriving a linear calibration range from 2 to 200 μM with a detection limit of 0.9 μM, which is well below the infectious dose of the spores (60 μM). The assay platform exhibits excellent anti-interference capability when treating a real biological sample matrix. The present method is validated by the analysis of DPA in human serum, and its practical application is further demonstrated by monitoring the DPA release upon spore germination.
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Affiliation(s)
- Zi-Han Cheng
- Research Center for Analytical Sciences, Department of Chemistry, College of Sciences , Northeastern University , Box 332, Shenyang 110819 , China
| | - Xun Liu
- Research Center for Analytical Sciences, Department of Chemistry, College of Sciences , Northeastern University , Box 332, Shenyang 110819 , China
| | - Shang-Qing Zhang
- Research Center for Analytical Sciences, Department of Chemistry, College of Sciences , Northeastern University , Box 332, Shenyang 110819 , China
| | - Ting Yang
- Research Center for Analytical Sciences, Department of Chemistry, College of Sciences , Northeastern University , Box 332, Shenyang 110819 , China
| | - Ming-Li Chen
- Research Center for Analytical Sciences, Department of Chemistry, College of Sciences , Northeastern University , Box 332, Shenyang 110819 , China
| | - Jian-Hua Wang
- Research Center for Analytical Sciences, Department of Chemistry, College of Sciences , Northeastern University , Box 332, Shenyang 110819 , China
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Endophytic Paenibacillus amylolyticus KMCLE06 Extracted Dipicolinic Acid as Antibacterial Agent Derived via Dipicolinic Acid Synthetase Gene. Curr Microbiol 2018; 76:178-186. [PMID: 30498942 DOI: 10.1007/s00284-018-1605-y] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2018] [Accepted: 11/23/2018] [Indexed: 01/15/2023]
Abstract
Bioactive natural compounds play pivotal roles in drug discovery and the emergence of multi-drug resistance pathogens demands the development of better/new drugs. Paenibacillus amylolyticus KMCLE06 endophytic bacterium isolated from the medicinal plant Coix lachryma-jobi were analyzed for the potential bioactive secondary metabolite compounds and its gene responsible within polyketide synthases (PKS) clusters. Ethyl acetate extraction of P. amylolyticus KMCLE06 showed significant antibacterial activity which was further processed to partial purification and characterization for bioactive compound. The foremost bioactive component in extraction was found to be dipicolinic acid (DPA). The antibacterial activity showed remarkable activity compared to the commercial standard DPA against both gram-positive and gram-negative pathogens. The MIC and MBC concentrations for partially purified extracted DPA ranged from 62.5 to 125 µg/ml and MBC from 208 to 250 µg/ml, respectively. Sequence analysis of gene amplified using degenerative primer, amplified 543 bp DNA region, revealing conserved putative open reading frame for dipicolinic acid synthetase (DpsA) key gene to produce DPA in most endospore forming bacteria. A search in the structural database for DpsA revealed significant homologous match with enoyl reductase one of the PKS type 1 module protein. This emphasizes endophytic P. amylolyticus KMCLE06 bacteria has presence of spoVF operon producing DPA via dipicolinic acid synthetase and lacks the polyketide synthase type 1 module cluster gene in its genome. And the bioactive compound DPA extracted acts as a stable remarkable antibacterial agent which can be potent compound for multi-resistance pathogens.
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Luan K, Meng R, Shan C, Cao J, Jia J, Liu W, Tang Y. Terbium Functionalized Micelle Nanoprobe for Ratiometric Fluorescence Detection of Anthrax Spore Biomarker. Anal Chem 2018; 90:3600-3607. [DOI: 10.1021/acs.analchem.8b00050] [Citation(s) in RCA: 88] [Impact Index Per Article: 14.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Ke Luan
- State Key Laboratory of Applied Organic Chemistry, Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P. R. China
| | - Ruiqian Meng
- State Key Laboratory of Applied Organic Chemistry, Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P. R. China
| | - Changfu Shan
- State Key Laboratory of Applied Organic Chemistry, Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P. R. China
| | - Jing Cao
- State Key Laboratory of Applied Organic Chemistry, Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P. R. China
| | - Jianguo Jia
- State Key Laboratory of Applied Organic Chemistry, Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P. R. China
| | - Weisheng Liu
- State Key Laboratory of Applied Organic Chemistry, Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P. R. China
| | - Yu Tang
- State Key Laboratory of Applied Organic Chemistry, Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P. R. China
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Bai XR, Zeng Y, Zhou XD, Wang XH, Shen AG, Hu JM. Environmentally Safe Mercury(II) Ions Aided Zero-Background and Ultrasensitive SERS Detection of Dipicolinic Acid. Anal Chem 2017; 89:10335-10342. [DOI: 10.1021/acs.analchem.7b02172] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Xiang-Ru Bai
- Key Laboratory of Analytical
Chemistry for Biology and Medicine (Ministry of Education), College
of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, People’s Republic of China
| | - Yi Zeng
- Key Laboratory of Analytical
Chemistry for Biology and Medicine (Ministry of Education), College
of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, People’s Republic of China
| | - Xiao-Dong Zhou
- Key Laboratory of Analytical
Chemistry for Biology and Medicine (Ministry of Education), College
of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, People’s Republic of China
| | - Xiao-Hua Wang
- Key Laboratory of Analytical
Chemistry for Biology and Medicine (Ministry of Education), College
of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, People’s Republic of China
| | - Ai-Guo Shen
- Key Laboratory of Analytical
Chemistry for Biology and Medicine (Ministry of Education), College
of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, People’s Republic of China
| | - Ji-Ming Hu
- Key Laboratory of Analytical
Chemistry for Biology and Medicine (Ministry of Education), College
of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, People’s Republic of China
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13
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Donmez M, Yilmaz MD, Kilbas B. Fluorescent detection of dipicolinic acid as a biomarker of bacterial spores using lanthanide-chelated gold nanoparticles. JOURNAL OF HAZARDOUS MATERIALS 2017; 324:593-598. [PMID: 27852519 DOI: 10.1016/j.jhazmat.2016.11.030] [Citation(s) in RCA: 44] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/23/2016] [Revised: 10/05/2016] [Accepted: 11/09/2016] [Indexed: 06/06/2023]
Abstract
Gold nanoparticles (GNPs) functionalized with ethylenediamine-lanthanide complexes (Eu-GNPs and Tb-GNPs) were used for the selective fluorescent detection of dipicolinic acid (DPA), a unique biomarker of bacterial spores, in water. Particles were characterized by transmission electron microscopy and zeta potential measurements. The coordination of DPA to the lanthanides resulted in the enhancement of the fluorescence. A selective response to DPA was observed over the nonselective binding of aromatic ligands. The ligand displacement strategy were also employed for the ratiometric fluorescent detection of DPA. 4,4,4-trifluoro-1-(2-naphthyl)-1,3-butanedion (TFNB) was chosen as an antenna to synthesize ternary complexes. The addition of DPA on EuGNP:TFNB ternary complex quenched the initial emission of the complex at 615nm and increased the TFNB emission at 450nm when excited at 350nm. The results demonstrated that the ratiometric fluorescent detection of DPA was achieved by ligand displacement strategy.
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Affiliation(s)
- Mert Donmez
- Department of Chemistry, Faculty of Art and Sciences, Duzce University, Duzce 81620, Turkey
| | - M Deniz Yilmaz
- Department of Bioengineering, Faculty of Engineering and Architecture, Konya Food and Agriculture University, Konya 42080, Turkey.
| | - Benan Kilbas
- Department of Chemistry, Faculty of Art and Sciences, Duzce University, Duzce 81620, Turkey.
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Bhardwaj N, Bhardwaj S, Mehta J, Kim KH, Deep A. Highly sensitive detection of dipicolinic acid with a water-dispersible terbium-metal organic framework. Biosens Bioelectron 2016; 86:799-804. [DOI: 10.1016/j.bios.2016.07.063] [Citation(s) in RCA: 63] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2016] [Revised: 07/13/2016] [Accepted: 07/19/2016] [Indexed: 12/31/2022]
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15
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Takahashi F, Sumitomo N, Hagihara H, Ozaki K. Increased dipicolinic acid production with an enhanced spoVF operon in Bacillus subtilis and medium optimization. Biosci Biotechnol Biochem 2015; 79:505-11. [DOI: 10.1080/09168451.2014.978261] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
Abstract
Dipicolinic acid (DPA) is a multi-functional agent for cosmetics, antimicrobial products, detergents, and functional polymers. The aim of this study was to design a new method for producing DPA from renewable material. The Bacillus subtilis spoVF operon encodes enzymes for DPA synthase and the part of lysine biosynthetic pathway. However, DPA is only synthesized in the sporulation phase, so the productivity of DPA is low level. Here, we report that DPA synthase was expressed in vegetative cells, and DPA was produced in the culture medium by replacement of the spoVFA promoter with other highly expressed promoter in B. subtilis vegetative cells, such as spoVG promoter. DPA levels were increased in the culture medium of genetically modified strains. DPA productivity was significantly improved up to 29.14 g/L in 72 h culture by improving the medium composition using a two-step optimization technique with the Taguchi methodology.
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Affiliation(s)
| | | | - Hiroshi Hagihara
- Biological Science Laboratories, KAO Corporation, Wakayama, Japan
| | - Katsuya Ozaki
- Biological Science Laboratories, KAO Corporation, Wakayama, Japan
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16
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Effect of sporulation medium on wet-heat resistance and structure of Alicyclobacillus acidoterrestris DSM 3922-type strain spores and modeling of the inactivation kinetics in apple juice. Int J Food Microbiol 2014; 189:82-8. [DOI: 10.1016/j.ijfoodmicro.2014.07.033] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2013] [Revised: 06/04/2014] [Accepted: 07/26/2014] [Indexed: 11/20/2022]
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17
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Cowcher DP, Xu Y, Goodacre R. Portable, Quantitative Detection of Bacillus Bacterial Spores Using Surface-Enhanced Raman Scattering. Anal Chem 2013; 85:3297-302. [DOI: 10.1021/ac303657k] [Citation(s) in RCA: 116] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- David P. Cowcher
- School of Chemistry and Manchester Institute of Biotechnology, University of Manchester, 131 Princess Street, Manchester,
M1 7DN United Kingdom
| | - Yun Xu
- School of Chemistry and Manchester Institute of Biotechnology, University of Manchester, 131 Princess Street, Manchester,
M1 7DN United Kingdom
| | - Royston Goodacre
- School of Chemistry and Manchester Institute of Biotechnology, University of Manchester, 131 Princess Street, Manchester,
M1 7DN United Kingdom
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18
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Nackos AN, Truong TV, Pulsipher TC, Kimball JA, Tolley HD, Robison RA, Bartholomew CH, Lee ML. One-step conversion of to its using salts for GC-MSdetection of bacterial endospores. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2011; 3:245-258. [PMID: 32938021 DOI: 10.1039/c0ay00270d] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Methyl sulfate (MeSO4-) salts were explored as thermochemolysis-methylation (TCM) reagents for gas chromatographic (GC) analysis of dipicolinic acid (DPA) as its dimethyl ester (Me2DPA) from bacterial endospores. The reaction was carried out under non-pyrolytic conditions by inserting a small coiled wire filament coated with the sample and reagents directly inside a GC injection port at 290 °C. Above 10 : 1 methyl donor/DPA ratios, alkali metal salts of MeSO4- effected 80-90% conversion of DPA to Me2DPA, which was 10-20 times more active than the same amount of tetramethylammonium hydroxide (TMA-OH) at this temperature. A quaternary salt mixture consisting of 1 : 3 : 1 : 3 TMA+/Na+/OH-/MeSO4- methylated spore DPA with an average conversion of 86% (mean conversion by TMA-OH under the same conditions was 4%). Therefore, the sensitivity for detection of bacterial endospores was increased over 20-fold compared to that observed with the more commonly employed TMA-OH methylating reagent. The limit of detection by this method was 9 × 104 total spores. Mechanisms describing the observed behavior are proposed and discussed. This is the first use of MeSO4- as a TCM reagent for GC.
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Affiliation(s)
- Aaron N Nackos
- Department of Chemical Engineering, Brigham Young University, Provo, UT 84602, USA.
| | - Tai V Truong
- Department of Chemistry and Biochemistry, Brigham Young University, Provo, UT 84602, USA.
| | | | - Jon A Kimball
- Department of Chemistry and Biochemistry, Brigham Young University, Provo, UT 84602, USA.
| | - H Dennis Tolley
- Department of Statistics, Brigham Young University, Provo, UT 84602, USA
| | - Richard A Robison
- Department of Microbiology and Molecular Biology, Brigham Young University, Provo, UT 84602, USA
| | - Calvin H Bartholomew
- Department of Chemical Engineering, Brigham Young University, Provo, UT 84602, USA.
| | - Milton L Lee
- Department of Chemistry and Biochemistry, Brigham Young University, Provo, UT 84602, USA.
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19
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Bazzicalupi C, Bencini A, Bianchi A, Borri C, Danesi A, Garcia-España E, Giorgi C, Valtancoli B. Polyfunctional Recognition of Pyridinedicarboxylate Anions with Macrocyclic Polyamine Receptors Containing Heteroaromatic Groups. J Org Chem 2008; 73:8286-95. [DOI: 10.1021/jo801366w] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Carla Bazzicalupi
- Department of Chemistry, Polo Scientifico, University of Florence, Via della Lastruccia 3, 50019 Sesto Fiorentino, Italy, and Departamento de Quimica Inorgánica, Instituto de Ciencia Molecular, Universidad de Valencia, Valencia, Spain
| | - Andrea Bencini
- Department of Chemistry, Polo Scientifico, University of Florence, Via della Lastruccia 3, 50019 Sesto Fiorentino, Italy, and Departamento de Quimica Inorgánica, Instituto de Ciencia Molecular, Universidad de Valencia, Valencia, Spain
| | - Antonio Bianchi
- Department of Chemistry, Polo Scientifico, University of Florence, Via della Lastruccia 3, 50019 Sesto Fiorentino, Italy, and Departamento de Quimica Inorgánica, Instituto de Ciencia Molecular, Universidad de Valencia, Valencia, Spain
| | - Claudia Borri
- Department of Chemistry, Polo Scientifico, University of Florence, Via della Lastruccia 3, 50019 Sesto Fiorentino, Italy, and Departamento de Quimica Inorgánica, Instituto de Ciencia Molecular, Universidad de Valencia, Valencia, Spain
| | - Andrea Danesi
- Department of Chemistry, Polo Scientifico, University of Florence, Via della Lastruccia 3, 50019 Sesto Fiorentino, Italy, and Departamento de Quimica Inorgánica, Instituto de Ciencia Molecular, Universidad de Valencia, Valencia, Spain
| | - Enrique Garcia-España
- Department of Chemistry, Polo Scientifico, University of Florence, Via della Lastruccia 3, 50019 Sesto Fiorentino, Italy, and Departamento de Quimica Inorgánica, Instituto de Ciencia Molecular, Universidad de Valencia, Valencia, Spain
| | - Claudia Giorgi
- Department of Chemistry, Polo Scientifico, University of Florence, Via della Lastruccia 3, 50019 Sesto Fiorentino, Italy, and Departamento de Quimica Inorgánica, Instituto de Ciencia Molecular, Universidad de Valencia, Valencia, Spain
| | - Barbara Valtancoli
- Department of Chemistry, Polo Scientifico, University of Florence, Via della Lastruccia 3, 50019 Sesto Fiorentino, Italy, and Departamento de Quimica Inorgánica, Instituto de Ciencia Molecular, Universidad de Valencia, Valencia, Spain
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20
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Fichtel J, Köster J, Rullkötter J, Sass H. Spore dipicolinic acid contents used for estimating the number of endospores in sediments. FEMS Microbiol Ecol 2007; 61:522-32. [PMID: 17623026 DOI: 10.1111/j.1574-6941.2007.00354.x] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
Abstract
Endospores are heat-resistant bacterial resting stages that can remain viable for long periods of time and may thus accumulate in sediments as a function of sediment age. The number of spores in sediments has only rarely been quantified, because of methodological problems, and consequently little is known about the quantitative contribution of endospores to the total number of prokaryotic cells. We here report on a protocol to determine the number of endospores in sediments and cultures. The method is based on the fluorimetric determination of dipicolinic acid (DPA), a spore core-specific compound, after reaction with terbium chloride. The concentration of DPA in natural samples is converted into endospore numbers using endospore-forming pure cultures as standards. Quenching of the fluorescence by sediment constituents and background fluorescence due to humic substances hampered direct determination of DPA in sediments. To overcome those interferences, DPA was extracted using ethyl acetate prior to fluorimetric measurements of DPA concentrations. The first results indicated that endospore numbers obtained with this method are orders of magnitude higher than numbers obtained by cultivation after pasteurization. In one of the explored sediment cores, endospores accounted for 3% of all stainable prokaryotic cells.
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Affiliation(s)
- Jörg Fichtel
- Institut für Chemie und Biologie des Meeres (ICBM), Carl von Ossietzky Universität Oldenburg, Carl-von-Ossietzky-Strasse 9-11, Oldenburg, Germany
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21
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Zhang J, Dalal N, Gleason C, Matthews MA, Waller LN, Fox KF, Fox A, Drews MJ, LaBerge M, An YH. On the mechanisms of deactivation of Bacillus atrophaeus spores using supercritical carbon dioxide. J Supercrit Fluids 2006. [DOI: 10.1016/j.supflu.2006.02.015] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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22
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Zhou Y, Yu B, Levon K. Potentiometric sensor for dipicolinic acid. Biosens Bioelectron 2005; 20:1851-5. [PMID: 15681204 DOI: 10.1016/j.bios.2004.05.005] [Citation(s) in RCA: 37] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2004] [Revised: 05/12/2004] [Accepted: 05/18/2004] [Indexed: 11/26/2022]
Abstract
A potentiometric chemosensor for selective determination of dipicolinic acid (2,6-pyridinedicarboxylic acid, DPA) was developed based on the surface imprinting technique coupled with a nanoscale transducer: an indium tin oxide (ITO)-coated glass plate. The sensor fabrication conditions, optimal recognition condition, as well as selectivity, sensitivity, and stability of the DPA sensor have been investigated. The DPA sensor could recognize DPA from 3,5-pyridinedicarboxylic acid. Potentiometric measurements demonstrated selective detection of DPA in a concentration range of 1.5 x 10(-6) to 0.0194 M. The response time of DPA sensor for 4 x 10(-4) M DPA was 25 s. The potentiometric response of the DPA sensor to DPA is at 90% of its initial magnitude after 550 times measurement. The viability of such a modified ITO electrode in the presence of other inorganic, organic, and biological materials was probed.
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Affiliation(s)
- Yanxiu Zhou
- Polymer Research Institute, Polytechnic University, Six Metrotech Center, Brooklyn, NY 11201-3840, USA.
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23
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Bell SEJ, Mackle JN, Sirimuthu NMS. Quantitative surface-enhanced Raman spectroscopy of dipicolinic acid—towards rapid anthrax endospore detection. Analyst 2005; 130:545-9. [PMID: 15776166 DOI: 10.1039/b415290e] [Citation(s) in RCA: 127] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Dipicolinic acid (DPA) is an excellent marker compound for bacterial spores, including those of Bacillus anthracis (anthrax). Surface-enhanced Raman spectroscopy (SERS) potentially has the sensitivity and discrimination needed for trace DPA analysis, but mixing DPA solutions with citrate-reduced silver colloid only yielded measurable SERS spectra at much higher (>80 ppm) concentrations than would be desirable for anthrax detection. Aggregation of the colloid with halide salts eliminated even these small DPA bands but aggregation with Na2SO4(aq) resulted in a remarkable increase in the DPA signals. With sulfate aggregation even 1 ppm solutions gave detectable signals with 10 s accumulation times, which is in the sensitivity range required. Addition of CNS- as an internal standard allowed quantitative DPA analysis, plotting the intensity of the strong DPA 1010 cm(-1) band (normalised to the ca. 2120 cm(-1) CNS- band) against DPA concentration gave a linear calibration (R2 = 0.986) over the range 0-50 ppm DPA. The inclusion of thiocyanate also allows false negatives due to accidental deactivation of the enhancing medium to be detected.
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Affiliation(s)
- Steven E J Bell
- School of Chemistry, Queen's University Belfast, David Keir Building, Belfast, BT9 5AG, N. Ireland.
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24
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He J, Luo X, Chen S, Cao L, Sun M, Yu Z. Determination of spore concentration in Bacillus thuringiensis through the analysis of dipicolinate by capillary zone electrophoresis. J Chromatogr A 2003; 994:207-12. [PMID: 12779231 DOI: 10.1016/s0021-9673(03)00422-9] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
A new capillary zone electrophoresis (CZE) method for the analysis of dipicolinic acid, a specific component found in spores but not in vegetative cells, was used to determine spore concentration in Bacillus thuringiensis according to the relationship between the spore concentration and the content of dipicolinate. The quantitative relationship was established by using purified spores. Electrolyte conditions that affected the separation efficiency of dipicolinate and the reproducibility were investigated. With 10 mM phosphate, 10 mM ethylenediaminetetraacetic acid and 0.25 mM tetradecyltrimethylammonium bromide at pH 6.2 as the carrier electrolyte, dipicolinate can be determined within 8 min at an applied voltage of -25 kV (anode at detector) and a capillary temperature of 25 degrees C. The method has a high separation efficiency with which the number of theoretical plates is above 300,000 plates m(-1). The relative standard deviations for migration time and peak area are less than 0.5% and 2.0%, respectively. The detection limit for dipicolinate was 10 ng ml(-1), which corresponds to 7.2 x 10(5) spores ml(-1). The method was used to determine spores in fermentation broths, and the results obtained agreed well with the values obtained by plate counting.
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Affiliation(s)
- Jin He
- Key Laboratory of Agricultural Microbiology, Ministry of Education, Wuhan, Hubei 430070, China
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25
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Effect of linear gramicidin on sporulation and intracellular ATP pools of Bacillus brevis. Arch Microbiol 1985; 143:248-52. [PMID: 2420301 DOI: 10.1007/bf00411244] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
When Bacillus brevis ATCC 8185 was subjected to nutritional shiftdown from a rich medium to one completely devoid of a nitrogen source, sporulation could be stimulated by the addition of linear gramicidin. Gramicidin-induced sporulation occurred after a considerably longer lag period than the earlier described tyrocidine-induced process (Ristow and Paulus 1982) but involved similar associated biochemical changes, such as extracellular protease production, rapid incorporation of radioactive precursors into RNA, and dipicolinate synthesis. The increased incorporation of [3H]leucine into tyrocidine was a characteristic element in gramicidin-induced sporulation, not being observed when spore formation was accelerated by limited nitrogen supplementation. Nitrogen supplementation (0.02-0.01% nutrient broth) caused a slow and gradual increase in dipicolinate production, in contrast to the sudden, rapid rise of dipicolinate synthesis provoked by the addition of gramicidin or tyrocidine. The induction of sporulation by gramicidin occurred at very low peptide concentrations (0.03 microM), which also brought about an acute depletion of intracellular ATP. In sporulation accelerated by nutrient broth, no depression of ATP level was observed and nonionophoric analogues of gramicidin were unable to substitute for gramicidin in inducing sporulation.
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26
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Abstract
Dipicolinic acid was extracted from approximately 0.1 mg spores or 0.5 ml of sporulating culture with 20 mM HCl for 10 min at 100 degrees C. The suspension was diluted with 5 mM Ca2+, 100 mM Tris, pH 7.6, centrifuged, and the first derivative of the uv absorbance spectrum recorded from 275 nm to 285 nm. DPA concentration was determined from the difference between the maximum at 276.6 nm and the minimum at 280 nm. The use of the difference between two first derivative values removed possible interference from sloping baselines. Turbidity, nucleic acids, and bacteriological media did not interfere. Analysis time for four extracts was 4 min using a spectrophotometer reading at 0.1-nm intervals. Dipicolinate at 0.1 mM gave 0.184 absorbance/nm at 25 degrees C. The coefficient of variation was 1.5%, and the detection limit 1 microM.
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27
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Isolation and characterization of quinonoid dihydropterins by high-performance liquid chromatography. J Chromatogr A 1983. [DOI: 10.1016/s0021-9673(01)88192-9] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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28
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Ristow H, Paulus H. Induction of sporulation in Bacillus brevis. 1. Biochemical events and modulation of RNA synthesis during induction by tyrocidine. EUROPEAN JOURNAL OF BIOCHEMISTRY 1982; 129:395-401. [PMID: 6185337 DOI: 10.1111/j.1432-1033.1982.tb07063.x] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
Under conditions of severe nitrogen starvation, brought about by nutritional shift-down, Bacillus brevis ATCC 8185 was unable to sporulate unless supplemented with the peptide antibiotic tyrocidine. The induction of sporulation was highly specific for tyrocidine and required only very low concentrations of the peptide (5 microM). Tyrocidine-induced sporulation was accompanied by the typical sporulation-specific events (e.g. extracellular protease production and dipicolinate synthesis) as well as the formation of linear gramicidin. The addition of tyrocidine produced acute inhibition of RNA synthesis that was followed by a limited activation of transcription near the time of onset of linear gramicidin synthesis, when the first sporulation-specific changes were observed. These results provide direct evidence for a role of tyrocidine in sporulation of B. brevis and suggest that the action of the peptide antibiotic may involve the control of transcription. Such a notion is supported by earlier studies on the effects of tyrocidine and linear gramicidin on purified RNA polymerase.
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