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Chandrika K, Sachan A. Biosynthesis of bacteriocin BacZY05-silver nanoconjugates and evaluation of their antibacterial properties. World J Microbiol Biotechnol 2024; 40:287. [PMID: 39090427 DOI: 10.1007/s11274-024-04093-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2024] [Accepted: 07/22/2024] [Indexed: 08/04/2024]
Abstract
Bacteriocins are antimicrobial peptides produced by bacteria to prevent the growth of pathogens. Combining bacteriocins with metal nanoparticles, like silver nanoparticles (AgNPs), has developed into a viable strategy to get over bacteriocin limitations. In this study, bacteriocin BacZY05 was extracted from Bacillus subtilis ZY05 and purified using various techniques. The resulting purified bacteriocin was then combined with silver nanoparticles to form bacteriocin silver nanoconjugates (BacZY05-AgNPs). The physicochemical properties of the BacZY05-AgNPs were characterized using various analytical techniques. The mean diameter of the synthesized AgNPs was approximately 20-60 nm with an oval or spherical shape. The antimicrobial activity of the BacZY05-AgNPs was evaluated against several indicator strains by their zone of inhibition (ZOI), using the agar well diffusion method. Compared to bacteriocin (ZOI- 13 to 20 mm) and AgNPs (ZOI- 10-22 mm) alone, the antibacterial activity data demonstrated a 1.3-1.5-fold increase in the activity of bacteriocin-nanoconjugates (ZOI- 22 to 26 mm). For Staphylococcus aureus MTCC3103 and Klebsiella pneumoniae MTCC109, BacZY05-capped AgNPs exhibited the lowest minimum inhibitory concentration (MIC), measuring 10.93 µg/mL. For Salmonella typhi NCIM2501, the MIC was 28.75 µg/mL. The highest MIC value was 57.5 µg/mL for Escherichia coli DH5α and Vibrio cholerae MTCC3909. With BacZY05-capped AgNPs, the lowest minimum bactericidal concentration (MBC) of 28.75 µg/mL was observed for Staphylococcus aureus MTCC31003. In the cases of Salmonella typhi NCIM2501 and Klebsiella pneumoniae MTCC109 concentration was 57.5 µg/mL. Vibrio cholerae MTCC3909 and Escherichia coli DH5α had the highest MBC values at 115 µg/mL.
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Affiliation(s)
- Kumari Chandrika
- Department of Life Sciences, Central University of Jharkhand, Jharkhand, Ranchi, 835 222, India
| | - Ashish Sachan
- Department of Life Sciences, Central University of Jharkhand, Jharkhand, Ranchi, 835 222, India.
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Bahl E, Jyoti A, Singh A, Siddqui A, Upadhyay SK, Jain D, Shah MP, Saxena J. Nanomaterials for intelligent CRISPR-Cas tools: improving environment sustainability. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2024:10.1007/s11356-024-32101-x. [PMID: 38291210 DOI: 10.1007/s11356-024-32101-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 11/22/2023] [Accepted: 01/17/2024] [Indexed: 02/01/2024]
Abstract
Clustered regularly interspaced short palindromic repeats (CRISPR)/CRISPR-associated protein (Cas) is a desirable gene modification tool covering a wide area in various sectors of medicine, agriculture, and microbial biotechnology. The role of this incredible genetic engineering technology has been extensively investigated; however, it remains formidable with cargo choices, nonspecific delivery, and insertional mutagenesis. Various nanomaterials including lipid, polymeric, and inorganic are being used to deliver the CRISPR-Cas system. Progress in nanomaterials could potentially address these challenges by accelerating precision targeting, cost-effectiveness, and one-step delivery. In this review, we highlighted the advances in nanotechnology and nanomaterials as smart delivery systems for CRISPR-Cas so as to ameliorate applications for environmental remediation including biomedical research and healthcare, strategies for mitigating antimicrobial resistance, and to be used as nanofertilizers for enhancing crop growth, and reducing the environmental impact of traditional fertilizers. The timely co-evolution of nanotechnology and CRISPR technologies has contributed to smart novel nanostructure hybrids for improving the onerous tasks of environmental remediation and biological sustainability.
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Affiliation(s)
- Ekansh Bahl
- Department of Biotechnology, University Institute of Biotechnology, Chandigarh University, S.A.S Nagar, 140413, Punjab, India
| | - Anupam Jyoti
- Department of Life Science, Parul Institute of Applied Science, Parul University, Vadodara, Gujarat, India
| | - Abhijeet Singh
- Department of Biosciences, Manipal University Jaipur, Rajasthan, 303007, India
| | - Arif Siddqui
- Department of Biology, College of Science, University of Ha'il, P.O. Box 2440, Ha'il, Saudi Arabia
| | - Sudhir K Upadhyay
- Department of Environmental Science, V.B.S. Purvanchal University, Jaunpur, 222003, India
| | - Devendra Jain
- Department of Molecular Biology and Biotechnology, Rajasthan College of Agriculture, Maharana Pratap University of Agriculture and Technology, Udaipur, 313001, India
| | - Maulin P Shah
- Industrial Wastewater Research Lab, Ankleshwar, India
| | - Juhi Saxena
- Department of Biotechnology, University Institute of Biotechnology, Chandigarh University, S.A.S Nagar, 140413, Punjab, India.
- Department of Biotechnology, Parul Institute of Technology, Parul University, Vadodara, Gujarat, India.
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Atanasov N, Evstatieva Y, Nikolova D. Antagonistic Interactions of Lactic Acid Bacteria from Human Oral Microbiome against Streptococcus mutans and Candida albicans. Microorganisms 2023; 11:1604. [PMID: 37375107 DOI: 10.3390/microorganisms11061604] [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: 05/18/2023] [Revised: 06/09/2023] [Accepted: 06/16/2023] [Indexed: 06/29/2023] Open
Abstract
Oral probiotic lactic acid bacteria can exhibit antagonistic activities against pathogens associated with diseases in the oral cavity. Therefore, twelve previously isolated oral strains were assessed for antagonistic evaluation against selected oral test microorganisms Streptococcus mutans and Candida albicans. Two separate co-culturing analyses were performed, where all tested strains showed the presence of antagonistic activity and four strains, Limosilactobacillus fermentum N 2, TC 3-11, and NA 2-2, and Weissella confusa NN 1, significantly inhibited Streptococcus mutans by 3-5 logs. The strains showed antagonistic activity against Candida albicans, and all exhibited pathogen inhibition by up to 2 logs. Co-aggregation capability was assessed, showing co-aggregative properties with the selected pathogens. Biofilm formation and antibiofilm activity of the tested strains against the oral pathogens were assayed, where the strains showed specificity in self-biofilm formation and well-expressed antibiofilm properties by most of them above 79% and 50% against Streptococcus mutans and Candida albicans, respectively. The tested LAB strains were assayed by a KMnO4 antioxidant bioassay, where most of the native cell-free supernatants exhibited total antioxidant capacity. These results show that five tested strains are promising candidates to be included in new functional probiotic products for oral healthcare.
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Affiliation(s)
- Nikola Atanasov
- Department of Biotechnology, Faculty of Biology, Sofia University "St. Kliment Ohridski", 1164 Sofia, Bulgaria
| | - Yana Evstatieva
- Department of Biotechnology, Faculty of Biology, Sofia University "St. Kliment Ohridski", 1164 Sofia, Bulgaria
| | - Dilyana Nikolova
- Department of Biotechnology, Faculty of Biology, Sofia University "St. Kliment Ohridski", 1164 Sofia, Bulgaria
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