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Pedro NA, Fontebasso G, Pinto SN, Alves M, Mira NP. Acetate modulates the inhibitory effect of Lactobacillus gasseri against the pathogenic yeasts Candida albicans and Candida glabrata. MICROBIAL CELL (GRAZ, AUSTRIA) 2023; 10:88-102. [PMID: 37009625 PMCID: PMC10054710 DOI: 10.15698/mic2023.04.795] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/07/2022] [Revised: 03/10/2023] [Accepted: 03/16/2023] [Indexed: 04/04/2023]
Abstract
The exploration of the interference prompted by commensal bacteria over fungal pathogens is an interesting alternative to develop new therapies. In this work we scrutinized how the presence of the poorly studied vaginal species Lactobacillus gasseri affects relevant pathophysiological traits of Candida albicans and Candida glabrata. L. gasseri was found to form mixed biofilms with C. albicans and C. glabrata resulting in pronounced death of the yeast cells, while bacterial viability was not affected. Reduced viability of the two yeasts was also observed upon co-cultivation with L. gasseri under planktonic conditions. Either in planktonic cultures or in biofilms, the anti-Candida effect of L. gasseri was augmented by acetate in a concentration-dependent manner. During planktonic co-cultivation the two Candida species counteracted the acidification prompted by L. gasseri thus impacting the balance between dissociated and undissociated organic acids. This feature couldn't be phenocopied in single-cultures of L. gasseri resulting in a broth enriched in acetic acid, while in the co-culture the non-toxic acetate prevailed. Altogether the results herein described advance the design of new anti-Candida therapies based on probiotics, in particular, those based on vaginal lactobacilli species, helping to reduce the significant burden that infections caused by Candida have today in human health.
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Affiliation(s)
- Nuno A. Pedro
- iBB, Institute for Bioengineering and Biosciences, Instituto Superior Técnico – Department of Bioengineering, Universidade de Lisboa, 1049-001 Lisboa, Portugal
- Associate Laboratory i4HB—Institute for Health and Bioeconomy at Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal
| | - Gabriela Fontebasso
- iBB, Institute for Bioengineering and Biosciences, Instituto Superior Técnico – Department of Bioengineering, Universidade de Lisboa, 1049-001 Lisboa, Portugal
- Associate Laboratory i4HB—Institute for Health and Bioeconomy at Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal
| | - Sandra N. Pinto
- iBB, Institute for Bioengineering and Biosciences, Instituto Superior Técnico – Department of Bioengineering, Universidade de Lisboa, 1049-001 Lisboa, Portugal
- Associate Laboratory i4HB—Institute for Health and Bioeconomy at Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal
| | - Marta Alves
- CQE-Centro Química Estrutural, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal
| | - Nuno P. Mira
- iBB, Institute for Bioengineering and Biosciences, Instituto Superior Técnico – Department of Bioengineering, Universidade de Lisboa, 1049-001 Lisboa, Portugal
- Associate Laboratory i4HB—Institute for Health and Bioeconomy at Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal
- * Corresponding Author: Nuno P Mira, Instituto Superior Técnico, Department of Bioengineering, University of Lisbon, Portugal; E-mail:
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Stout EA, Sanozky-Dawes R, Goh YJ, Crawley AB, Klaenhammer TR, Barrangou R. Deletion-based escape of CRISPR-Cas9 targeting in Lactobacillus gasseri. Microbiology (Reading) 2018; 164:1098-1111. [DOI: 10.1099/mic.0.000689] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Affiliation(s)
- Emily A. Stout
- 1Department of Food, Bioprocessing and Nutrition Sciences, North Carolina State University, Raleigh, NC, USA
| | - Rosemary Sanozky-Dawes
- 1Department of Food, Bioprocessing and Nutrition Sciences, North Carolina State University, Raleigh, NC, USA
| | - Yong Jun Goh
- 1Department of Food, Bioprocessing and Nutrition Sciences, North Carolina State University, Raleigh, NC, USA
| | - Alexandra B. Crawley
- 2Functional Genomics Program, North Carolina State University, Raleigh, NC, USA
| | - Todd R. Klaenhammer
- 1Department of Food, Bioprocessing and Nutrition Sciences, North Carolina State University, Raleigh, NC, USA
- 2Functional Genomics Program, North Carolina State University, Raleigh, NC, USA
| | - Rodolphe Barrangou
- 2Functional Genomics Program, North Carolina State University, Raleigh, NC, USA
- 1Department of Food, Bioprocessing and Nutrition Sciences, North Carolina State University, Raleigh, NC, USA
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Bidart GN, Rodríguez-Díaz J, Palomino-Schätzlein M, Monedero V, Yebra MJ. Human milk and mucosal lacto- and galacto-N-biose synthesis by transgalactosylation and their prebiotic potential in Lactobacillus species. Appl Microbiol Biotechnol 2016; 101:205-215. [DOI: 10.1007/s00253-016-7882-0] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2016] [Revised: 09/07/2016] [Accepted: 09/20/2016] [Indexed: 12/14/2022]
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Sanozky-Dawes R, Selle K, O'Flaherty S, Klaenhammer T, Barrangou R. Occurrence and activity of a type II CRISPR-Cas system in Lactobacillus gasseri. MICROBIOLOGY-SGM 2015; 161:1752-1761. [PMID: 26297561 DOI: 10.1099/mic.0.000129] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Bacteria encode clustered regularly interspaced short palindromic repeats (CRISPRs) and CRISPR-associated genes (cas), which collectively form an RNA-guided adaptive immune system against invasive genetic elements. In silico surveys have revealed that lactic acid bacteria harbour a prolific and diverse set of CRISPR-Cas systems. Thus, the natural evolutionary role of CRISPR-Cas systems may be investigated in these ecologically, industrially, scientifically and medically important microbes. In this study, 17 Lactobacillus gasseri strains were investigated and 6 harboured a type II-A CRISPR-Cas system, with considerable diversity in array size and spacer content. Several of the spacers showed similarity to phage and plasmid sequences, which are typical targets of CRISPR-Cas immune systems. Aligning the protospacers facilitated inference of the protospacer adjacent motif sequence, determined to be 5'-NTAA-3' flanking the 3' end of the protospacer. The system in L. gasseri JV-V03 and NCK 1342 interfered with transforming plasmids containing sequences matching the most recently acquired CRISPR spacers in each strain. We report the distribution and function of a native type II-A CRISPR-Cas system in the commensal species L. gasseri. Collectively, these results open avenues for applications for bacteriophage protection and genome modification in L. gasseri, and contribute to the fundamental understanding of CRISPR-Cas systems in bacteria.
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Affiliation(s)
- Rosemary Sanozky-Dawes
- Department of Food, Bioprocessing and Nutrition Sciences, North Carolina State University, Raleigh, NC, USA
| | - Kurt Selle
- Department of Food, Bioprocessing and Nutrition Sciences, North Carolina State University, Raleigh, NC, USA.,Functional Genomics Program, North Carolina State University, Raleigh, NC, USA
| | - Sarah O'Flaherty
- Department of Food, Bioprocessing and Nutrition Sciences, North Carolina State University, Raleigh, NC, USA
| | - Todd Klaenhammer
- Department of Food, Bioprocessing and Nutrition Sciences, North Carolina State University, Raleigh, NC, USA.,Functional Genomics Program, North Carolina State University, Raleigh, NC, USA
| | - Rodolphe Barrangou
- Functional Genomics Program, North Carolina State University, Raleigh, NC, USA.,Department of Food, Bioprocessing and Nutrition Sciences, North Carolina State University, Raleigh, NC, USA
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Al-Saleh AA, Ismail EA, Metwalli AA. Autolysis detection and evaluation of some lactic acid bacteria by renaturing sodium dodecyl sulphate-polyacrylamide gel electrophoresis and polymerase chain reaction assays. INT J DAIRY TECHNOL 2014. [DOI: 10.1111/1471-0307.12113] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Abdulrahman A Al-Saleh
- Department of Food Science and Nutrition; King Saud University; P. O. Box 2460 Riyadh 1145 Saudi Arabia
| | - Elsayed A Ismail
- Department of Food Science and Nutrition; King Saud University; P. O. Box 2460 Riyadh 1145 Saudi Arabia
- Faculty of Agriculture; Food Science Department; Benha University; Benha 13518 Egypt
| | - Ali Am Metwalli
- Department of Food Science and Nutrition; King Saud University; P. O. Box 2460 Riyadh 1145 Saudi Arabia
- Dairy Science Department; College of Agriculture; Menia University; Menia 61519 Egypt
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Spontaneously induced prophages in Lactobacillus gasseri contribute to horizontal gene transfer. Appl Environ Microbiol 2014; 80:3508-17. [PMID: 24682298 DOI: 10.1128/aem.04092-13] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023] Open
Abstract
Lactobacillus gasseri is an endogenous species of the human gastrointestinal tract and vagina. With recent advances in microbial taxonomy, phylogenetics, and genomics, L. gasseri is recognized as an important commensal and is increasingly being used in probiotic formulations. L. gasseri strain ADH is lysogenic and harbors two inducible prophages. In this study, prophage adh was found to spontaneously induce in broth cultures to populations of ∼ 10(7) PFU/ml by stationary phase. The adh prophage-cured ADH derivative NCK102 was found to harbor a new, second inducible phage, vB_Lga_jlb1 (jlb1). Phage jlb1 was sequenced and found to be highly similar to the closely related phage LgaI, which resides as two tandem prophages in the neotype strain L. gasseri ATCC 33323. The common occurrence of multiple prophages in L. gasseri genomes, their propensity for spontaneous induction, and the high degree of homology among phages within multiple species of Lactobacillus suggest that temperate bacteriophages likely contribute to horizontal gene transfer (HGT) in commensal lactobacilli. In this study, the host ranges of phages adh and jlb1 were determined against 16 L. gasseri strains. The transduction range and the rate of spontaneous transduction were investigated in coculture experiments to ascertain the degree to which prophages can promote HGT among a variety of commensal and probiotic lactobacilli. Both adh and jlb1 particles were confirmed to mediate plasmid transfer. As many as ∼10(3) spontaneous transductants/ml were obtained. HGT by transducing phages of commensal lactobacilli may have a significant impact on the evolution of bacteria within the human microbiota.
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Complete nucleotide sequence of the temperate bacteriophage LBR48, a new member of the family Myoviridae. Arch Virol 2010; 156:319-22. [PMID: 20976608 DOI: 10.1007/s00705-010-0841-7] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2010] [Accepted: 10/15/2010] [Indexed: 10/18/2022]
Abstract
The complete genomic sequence of LBR48, a temperate bacteriophage induced from a lysogenic strain of Lactobacillus brevis, was found to be 48,211 nucleotides long and to contain 90 putative open reading frames. Based on structural characteristics obtained from microscopic analysis and nucleic acid sequence determination, phage LBR48 can be classified as a member of the family Myoviridae. Analysis of the genome showed the conserved gene order of previously reported phages of the family Siphoviridae from lactic acid bacteria, despite low nucleotide sequence similarity. Analysis of the attachment sites revealed 15-nucleotide-long core sequences.
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