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Xu L, Bai X, Joong Oh E. Strategic approaches for designing yeast strains as protein secretion and display platforms. Crit Rev Biotechnol 2024:1-18. [PMID: 39138023 DOI: 10.1080/07388551.2024.2385996] [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: 04/02/2024] [Revised: 07/03/2024] [Accepted: 07/04/2024] [Indexed: 08/15/2024]
Abstract
Yeast has been established as a versatile platform for expressing functional molecules, owing to its well-characterized biology and extensive genetic modification tools. Compared to prokaryotic systems, yeast possesses advanced cellular mechanisms that ensure accurate protein folding and post-translational modifications. These capabilities are particularly advantageous for the expression of human-derived functional proteins. However, designing yeast strains as an expression platform for proteins requires the integration of molecular and cellular functions. By delving into the complexities of yeast-based expression systems, this review aims to empower researchers with the knowledge to fully exploit yeast as a functional platform to produce a diverse range of proteins. This review includes an exploration of the host strains, gene cassette structures, as well as considerations for maximizing the efficiency of the expression system. Through this in-depth analysis, the review anticipates stimulating further innovation in the field of yeast biotechnology and protein engineering.
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Affiliation(s)
- Luping Xu
- Department of Food Science, Purdue University, West Lafayette, IN, USA
- Whistler Center for Carbohydrate Research, Purdue University, West Lafayette, IN, USA
| | | | - Eun Joong Oh
- Department of Food Science, Purdue University, West Lafayette, IN, USA
- Whistler Center for Carbohydrate Research, Purdue University, West Lafayette, IN, USA
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2
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Durmusoglu D, Haller DJ, Al'Abri IS, Day K, Sands C, Clark A, San-Miguel A, Vazquez-Uribe R, Sommer MOA, Crook NC. Programming Probiotics: Diet-Responsive Gene Expression and Colonization Control in Engineered S. boulardii. ACS Synth Biol 2024; 13:1851-1865. [PMID: 38787439 DOI: 10.1021/acssynbio.4c00145] [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] [Indexed: 05/25/2024]
Abstract
Saccharomyces boulardii (Sb) is an emerging probiotic chassis for delivering biomolecules to the mammalian gut, offering unique advantages as the only eukaryotic probiotic. However, precise control over gene expression and gut residence time in Sb have remained challenging. To address this, we developed five ligand-responsive gene expression systems and repaired galactose metabolism in Sb, enabling inducible gene expression in this strain. Engineering these systems allowed us to construct AND logic gates, control the surface display of proteins, and turn on protein production in the mouse gut in response to dietary sugar. Additionally, repairing galactose metabolism expanded Sb's habitat within the intestines and resulted in galactose-responsive control over gut residence time. This work opens new avenues for precise dosing of therapeutics by Sb via control over its in vivo gene expression levels and localization within the gastrointestinal tract.
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Affiliation(s)
- Deniz Durmusoglu
- Chemical and Biomolecular Engineering, North Carolina State University, Raleigh, North Carolina 27606, United States
| | - Daniel J Haller
- Chemical and Biomolecular Engineering, North Carolina State University, Raleigh, North Carolina 27606, United States
| | - Ibrahim S Al'Abri
- Chemical and Biomolecular Engineering, North Carolina State University, Raleigh, North Carolina 27606, United States
| | - Katie Day
- Chemical and Biomolecular Engineering, North Carolina State University, Raleigh, North Carolina 27606, United States
| | - Carmen Sands
- Novo Nordisk Foundation Center for Biosustainability, Technical University of Denmark, 2800 Kgs. Lyngby, Denmark
| | - Andrew Clark
- Chemical and Biomolecular Engineering, North Carolina State University, Raleigh, North Carolina 27606, United States
| | - Adriana San-Miguel
- Chemical and Biomolecular Engineering, North Carolina State University, Raleigh, North Carolina 27606, United States
| | - Ruben Vazquez-Uribe
- Novo Nordisk Foundation Center for Biosustainability, Technical University of Denmark, 2800 Kgs. Lyngby, Denmark
| | - Morten O A Sommer
- Novo Nordisk Foundation Center for Biosustainability, Technical University of Denmark, 2800 Kgs. Lyngby, Denmark
| | - Nathan C Crook
- Chemical and Biomolecular Engineering, North Carolina State University, Raleigh, North Carolina 27606, United States
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Lee HJ, Park BR, Chewaka LS. A Comparative Study of Composition and Soluble Polysaccharide Content between Brewer's Spent Yeast and Cultured Yeast Cells. Foods 2024; 13:1567. [PMID: 38790867 PMCID: PMC11121356 DOI: 10.3390/foods13101567] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2024] [Revised: 05/07/2024] [Accepted: 05/13/2024] [Indexed: 05/26/2024] Open
Abstract
Yeast, crucial in beer production, holds great potential owing to its ability to transform into a valuable by-product resource, known as brewer's spent yeast (BSY), with potentially beneficial physiological effects. This study aimed to compare the composition and soluble polysaccharide content of Brewer's spent yeast with those of cultured yeast strains, namely Saccharomyces cerevisiae (SC) and S. boulardii (SB), to facilitate the utilization of BSY as an alternative source of functional polysaccharides. BSY exhibited significantly higher carbohydrate content and lower crude protein content than SC and SB cells. The residues recovered through autolysis were 53.11%, 43.83%, and 44.99% for BSY, SC, and SB, respectively. Notably, the polysaccharide content of the BSY residue (641.90 μg/mg) was higher than that of SC (553.52 μg/mg) and SB (591.56 μg/mg). The yields of alkali-extracted water-soluble polysaccharides were 33.62%, 40.76%, and 42.97% for BSY, SC, and SB, respectively, with BSY comprising a comparable proportion of water-soluble saccharides made with SC and SB, including 49.31% mannan and 20.18% β-glucan. Furthermore, BSY demonstrated antioxidant activities, including superoxide dismutase (SOD), ABTS, and DPPH scavenging potential, suggesting its ability to mitigate oxidative stress. BSY also exhibited a significantly higher total phenolic compound content, indicating its potential to act as an effective functional food material.
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Affiliation(s)
| | | | - Legesse Shiferaw Chewaka
- Department of Agro-Food Resource, National Institute of Agricultural Science, Rural Development Administration (RDA), Jeonju 54875, Republic of Korea; (H.J.L.); (B.-R.P.)
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Tafazzoli K, Ghavami M, Khosravi-Darani K. Production of iron enriched Saccharomyces boulardii: impact of process variables. Sci Rep 2024; 14:4844. [PMID: 38418660 PMCID: PMC10902395 DOI: 10.1038/s41598-024-55433-7] [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: 06/22/2023] [Accepted: 02/23/2024] [Indexed: 03/02/2024] Open
Abstract
About half of the 1.62 billion cases of anemia are because of poor diet and iron deficiency. Currently, the use of iron-enriched yeasts can be used as the most effective and possible way to prevent and treat anemia due to the ability of biotransformation of mineral compounds into the organic form. In this research, for the first time, Saccharomyces (S.) boulardii was used for iron enrichment with the aim that the probiotic properties of yeast provide a potential iron supplement besides improving the bioavailability of iron. Also, due to its higher resistance than other Saccharomyces strains against stresses, it can protect iron against processing temperatures and stomach acidic-enzymatic conditions. So, the effect of three important variables, including concentration of iron, molasses and KH2PO4 on the growth and biotransformation of yeast was investigated by the Box-Behnken design (BBD). The best conditions occurred in 3 g/l KH2PO4, 20 g/l molasses and 12 mg/l FeSO4 with the highest biotransformation 27 mg Fe/g dry cell weight (DCW) and 6 g/l biomass weight. Such yeast can improve fermented products, provide potential supplement, and restore the lost iron of bread, which is a useful iron source, even for vegetarians-vegans and play an important role in manage with anemia. It is recommended that in future researches, attention should be paid to increasing the iron enrichment of yeast through permeabilizing the membrane and overcoming the structural barrier of the cell wall.
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Affiliation(s)
- Kiyana Tafazzoli
- Department of Food Science and Technology, Science and Research Branch, Islamic Azad University, Tehran, Iran
| | - Mehrdad Ghavami
- Department of Food Science and Technology, Science and Research Branch, Islamic Azad University, Tehran, Iran
| | - Kianoush Khosravi-Darani
- Department of Food Technology Research, Faculty of Nutrition Sciences and Food Technology/National Nutrition and Food Technology Research Institute, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
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Jiao F, Cui X, Gong X, Jiang G, Wang J, Meng L. The effects of ultrasonic processing on the antioxidant activity of Geotrichum candidum LG-8 and its cell wall extracts. Front Nutr 2024; 11:1334956. [PMID: 38450237 PMCID: PMC10915238 DOI: 10.3389/fnut.2024.1334956] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2023] [Accepted: 01/26/2024] [Indexed: 03/08/2024] Open
Abstract
Introduction Extraction techniques that influence cell wall polysaccharides (EPS) is crucial for maximizing their bioactivity. This study evaluates ultrasound technology for extracting antioxidant polysaccharides from Geotrichum candidum LG-8, assessing its impacton antioxidant activity. Methods Ultrasound extraction of EPS from G. candidum LG-8 was optimized (18 min, pH 7.0, 40 W/cm2, 0.75 M NaCl). ABTS scavenging efficiency and monosaccharide composition of LG-EPS1 and LG-EPS3 were analyzed using Fourier-transform infrared spectroscopy (FTIR) and scanning electron microscopy (SEM). Results The Results showed that ultrasonic treatment markedly increased the ABTS radical scavenging efficiency of LG-8 cells by 47%. At a concentration of 1 mg/mL, the ultrasonically extracted LG-EPS1 and LG-EPS3 polysaccharides exhibited significant ABTS radical scavenging efficiencies of 26% and 51%, respectively. Monosaccharide composition analysis identified mannose and glucose in LG-EPS1, while LG-EPS3 was primarily composed of mannose. FTIR spectra verified the polysaccharides' presence, and SEM provided visual confirmation of the nanoparticle structures characteristic of LG-EPS1 and LG-EPS3. Discussion This research not only underscores the technological merits of ultrasound in polysaccharide extraction but also highlights the potential of G. candidum LG-8 derived polysaccharides as valuable bioactive compounds for antioxidant utilization.
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Affiliation(s)
- Fengping Jiao
- School of Public Health, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan, Shandong, China
| | - Xianping Cui
- Division of Hepatobiliary and Pancreatic Surgery, Affiliated Provincial Hospital, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan, Shandong, China
| | - Xiaodi Gong
- School of Public Health, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan, Shandong, China
| | - Guozheng Jiang
- Yantai Hengyuan Bioengineering Co. Ltd., Yantai, Shandong, China
| | - Jinbiao Wang
- Yantai Hengyuan Bioengineering Co. Ltd., Yantai, Shandong, China
| | - Ling Meng
- School of Public Health, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan, Shandong, China
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6
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Samakkarn W, Vandecruys P, Moreno MRF, Thevelein J, Ratanakhanokchai K, Soontorngun N. New biomarkers underlying acetic acid tolerance in the probiotic yeast Saccharomyces cerevisiae var. boulardii. Appl Microbiol Biotechnol 2024; 108:153. [PMID: 38240846 PMCID: PMC10799125 DOI: 10.1007/s00253-023-12946-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2023] [Revised: 10/16/2023] [Accepted: 10/17/2023] [Indexed: 01/22/2024]
Abstract
Evolutionary engineering experiments, in combination with omics technologies, revealed genetic markers underpinning the molecular mechanisms behind acetic acid stress tolerance in the probiotic yeast Saccharomyces cerevisiae var. boulardii. Here, compared to the ancestral Ent strain, evolved yeast strains could quickly adapt to high acetic acid levels (7 g/L) and displayed a shorter lag phase of growth. Bioinformatic-aided whole-genome sequencing identified genetic changes associated with enhanced strain robustness to acetic acid: a duplicated sequence in the essential endocytotic PAN1 gene, mutations in a cell wall mannoprotein (dan4Thr192del), a lipid and fatty acid transcription factor (oaf1Ser57Pro) and a thiamine biosynthetic enzyme (thi13Thr332Ala). Induction of PAN1 and its associated endocytic complex SLA1 and END3 genes was observed following acetic acid treatment in the evolved-resistant strain when compared to the ancestral strain. Genome-wide transcriptomic analysis of the evolved Ent acid-resistant strain (Ent ev16) also revealed a dramatic rewiring of gene expression among genes associated with cellular transport, metabolism, oxidative stress response, biosynthesis/organization of the cell wall, and cell membrane. Some evolved strains also displayed better growth at high acetic acid concentrations and exhibited adaptive metabolic profiles with altered levels of secreted ethanol (4.0-6.4% decrease), glycerol (31.4-78.5% increase), and acetic acid (53.0-60.3% increase) when compared to the ancestral strain. Overall, duplication/mutations and transcriptional alterations are key mechanisms driving improved acetic acid tolerance in probiotic strains. We successfully used adaptive evolutionary engineering to rapidly and effectively elucidate the molecular mechanisms behind important industrial traits to obtain robust probiotic yeast strains for myriad biotechnological applications. KEY POINTS: •Acetic acid adaptation of evolutionary engineered robust probiotic yeast S. boulardii •Enterol ev16 with altered genetic and transcriptomic profiles survives in up to 7 g/L acetic acid •Improved acetic acid tolerance of S. boulardii ev16 with mutated PAN1, DAN4, OAF1, and THI13 genes.
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Affiliation(s)
- Wiwan Samakkarn
- Excellent Research Laboratory for Yeast Innovation, Division of Biochemical Technology, School of Bioresources and Technology, King Mongkut's University of Technology Thonburi, Bangkok, Thailand
| | - Paul Vandecruys
- Laboratory of Molecular Cell Biology, Institute of Botany and Microbiology, KU Leuven, Leuven, Heverlee, Belgium
- Center for Microbiology, VIB, Leuven, Flanders, Belgium
| | - Maria Remedios Foulquié Moreno
- Laboratory of Molecular Cell Biology, Institute of Botany and Microbiology, KU Leuven, Leuven, Heverlee, Belgium
- Center for Microbiology, VIB, Leuven, Flanders, Belgium
| | - Johan Thevelein
- Laboratory of Molecular Cell Biology, Institute of Botany and Microbiology, KU Leuven, Leuven, Heverlee, Belgium
- Center for Microbiology, VIB, Leuven, Flanders, Belgium
- NovelYeast Bv, Open Bio-Incubator, Erasmus High School, (Jette), Brussels, Belgium
| | - Khanok Ratanakhanokchai
- Excellent Research Laboratory for Yeast Innovation, Division of Biochemical Technology, School of Bioresources and Technology, King Mongkut's University of Technology Thonburi, Bangkok, Thailand
- Pilot Plant Development and Training Institute, King Mongkut's University of Technology Thonburi, Bangkok, Thailand
| | - Nitnipa Soontorngun
- Excellent Research Laboratory for Yeast Innovation, Division of Biochemical Technology, School of Bioresources and Technology, King Mongkut's University of Technology Thonburi, Bangkok, Thailand.
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Alvarez-Zapata M, Franco-Vega A, Rondero AG, Guerra RS, Flores BIJ, Comas-García M, Ovalle CO, Schneider B, Ratering S, Schnell S, Martinez-Gutierrez F. Modulation of the Altered Intestinal Microbiota by Use of Antibiotics with a Novel Synbiotic on Wistar Rats. Probiotics Antimicrob Proteins 2023:10.1007/s12602-023-10204-0. [PMID: 38127241 DOI: 10.1007/s12602-023-10204-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/09/2023] [Indexed: 12/23/2023]
Abstract
The use of antibiotics unbalances the intestinal microbiota. Probiotics, prebiotics, and synbiotics are alternatives for these unbalances. The effects of a new synbiotic composed of probiotic Saccharomyces boulardii CNCM I-745 and fructans from Agave salmiana (fAs) as prebiotics were assessed to modulate the intestinal microbiota. Two probiotic presentations, the commercial probiotic (CP) and the microencapsulated probiotic (MP) to improve those effects, were used to prepare the synbiotics and feed Wistar rats subjected to antibiotics (AB). Eight groups were studied, including five controls and three groups to modulate the microbiota after the use of antibiotics: G5: AB + MP-synbiotic, G6: AB + CP-synbiotic, and G8: AB + fAs. All treatments were administered daily for 7 days. On days 7 and 21, euthanasia was performed, cecum tissue was recovered and used to evaluate histological analysis and to study microphotograph by TEM, and finally, bacterial DNA was extracted and 16S rRNA gene metabarcode sequencing was performed. Histological analysis showed less epithelial damage and more abundance of the intestinal microbiota in the groups G5, G6, and G8 in comparison with the AB control group after 7 days. Microphotograph of the cecum at 2 weeks post treatment showed that G5 and G6 presented beneficial effects in epithelial reconstruction. Interestingly, in the groups that used the synbiotic without AB (G3 and G4) in addition to contributing to the recovery of the autochthonous microbiota, it promotes the development of beneficial microorganisms; those results were also achieved in the groups that used the synbiotic with AB enhancing the bacterial diversity and regulating the impact of AB.
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Affiliation(s)
- Miguel Alvarez-Zapata
- Laboratorio de Antimicrobianos, Biopelículas y Microbiota, Facultad de Ciencias Químicas, U.A.S.L.P., Av. Dr. Manuel Nava No. 6 Zona Universitaria, CP 78210, San Luis Potosí, S.L.P., México
| | - Avelina Franco-Vega
- Laboratorio de Tecnologías Emergentes, Facultad de Ciencias Químicas, U.A.S.L.P., San Luis Potosí, México
| | - Adriana Ganem Rondero
- Laboratorio de Investigación y Posgrado en Tecnología Farmacéutica (L-322), Facultad de Estudios Superiores Cuautitlán, Universidad Nacional Autónoma de México, Mexico City, Estado de México, México
| | - Ruth Soria Guerra
- Laboratorio de Biotecnología de plantas, Facultad de Ciencias Químicas, U.A.S.L.P., San Luis Potosí, México
| | | | - Mauricio Comas-García
- Sección de Genómica Médica, Centro de Investigación en Biomedicina y Salud, U.A.S.L.P., San Luis Potosí, México
- Sección de Microscopía de Alta Resolución, Centro de Investigación en Biomedicina y Salud, U.A.S.L.P., San Luis Potosí, Mexico
- Facultad de Ciencias, U.A.S.L.P., San Luis Potosi, Mexico
| | | | - Belinda Schneider
- Institute of Applied Microbiology, Justus Liebig University Giessen, Giessen, Germany
| | - Stefan Ratering
- Institute of Applied Microbiology, Justus Liebig University Giessen, Giessen, Germany
| | - Sylvia Schnell
- Institute of Applied Microbiology, Justus Liebig University Giessen, Giessen, Germany
| | - Fidel Martinez-Gutierrez
- Laboratorio de Antimicrobianos, Biopelículas y Microbiota, Facultad de Ciencias Químicas, U.A.S.L.P., Av. Dr. Manuel Nava No. 6 Zona Universitaria, CP 78210, San Luis Potosí, S.L.P., México.
- Sección de Genómica Médica, Centro de Investigación en Biomedicina y Salud, U.A.S.L.P., San Luis Potosí, México.
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8
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Gopalan S, Ganapathy S, Mitra M, Neha, Kumar Joshi D, Veligandla KC, Rathod R, Kotak BP. Unique Properties of Yeast Probiotic Saccharomyces boulardii CNCM I-745: A Narrative Review. Cureus 2023; 15:e46314. [PMID: 37927652 PMCID: PMC10621882 DOI: 10.7759/cureus.46314] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/01/2023] [Indexed: 11/07/2023] Open
Abstract
Probiotics, both bacterial and yeast, have long been associated with a beneficial health history and human well-being. Among yeasts, Saccharomyces is a genus that is efficacious in rendering better human health, with Saccharomyces boulardii (S. boulardii) CNCM I-745 being classified as a probiotic agent. The present review highlights the unique properties of S. boulardii and its rolein the prevention of antibiotic-associated diarrhea (AAD) and pediatric acute gastroenteritis (PAGE) in comparison to bacterial probiotics. Its unique properties,such as viability over a wide pH range, inability to acquire antibiotic resistance genes, and property to achieve a steady state rapidly, have given S. boulardii an edge over bacterial probiotics. In AAD patients, prophylactic use of S. boulardii has shown a significantly lower risk of AAD (in comparison to controls) and restored the diversity of gut microbiota. Among Indian children with PAGE, S. boulardii CNCM I-745 was found superior to Lactobacillus rhamnosus GG and four strains of Bacillus clausii in shortening the duration of diarrhea and reducing the length of hospital stay. S. boulardii CNCM I-745 being considered a safe probiotic for use in children and adults also finds recommendations in several international guidelines for the management of acute diarrhea. The current review discusses evidence for the proven efficacy and safety of S. boulardii CNCM I-745 as a probiotic for preventing gastrointestinal disorders.
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Affiliation(s)
- Sarath Gopalan
- Pediatrics, Madhukar Rainbow Children's Hospital, New Delhi, IND
| | | | - Monjori Mitra
- Pediatrics, Institute of Child Health (ICH), Kolkata, IND
| | - Neha
- Medical Affairs, Dr. Reddy's Laboratories Ltd., Hyderabad, IND
| | | | | | - Rahul Rathod
- Ideation and Clinical Research/Medical Affairs, Dr. Reddy's Laboratories Ltd., Hyderabad, IND
| | - Bhavesh P Kotak
- Medical Affairs, Dr. Reddy's Laboratories Ltd., Hyderabad, IND
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9
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Egea MB, de Oliveira Filho JG, Lemes AC. Investigating the Efficacy of Saccharomyces boulardii in Metabolic Syndrome Treatment: A Narrative Review of What Is Known So Far. Int J Mol Sci 2023; 24:12015. [PMID: 37569390 PMCID: PMC10418856 DOI: 10.3390/ijms241512015] [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: 06/23/2023] [Revised: 07/24/2023] [Accepted: 07/25/2023] [Indexed: 08/13/2023] Open
Abstract
Metabolic syndrome (MetS) is characterized by complex metabolic changes involving a cluster of co-occurring conditions, such as abdominal obesity, high blood pressure, high fasting plasma glucose, high serum triglycerides, and high LDL cholesterol levels or low HDL cholesterol levels. The incidence and risk factors of MetS occurrence increase every year. It is estimated that MetS affects approximately 30% of the population of some countries. Therefore, novel strategies are being studied to reduce the negative impact of having an unbalanced diet and a lack of physical activity. One of these strategies is the administration of probiotic microorganisms, such as the yeast Saccharomyces boulardii, which has been associated with several beneficial health effects (including modulation of the intestinal microbiota and improvement of the inflammatory, antioxidant, antibacterial, antitumor, and anti-inflammatory profiles). Thus, the objective of this study was to review the risk factors of MetS occurrence and the beneficial effects of S. boulardii ingestion in the treatment of MetS. Here, we critically evaluate the treatment necessary to promote these benefits. Using the pre-established inclusion criteria, eight studies were reviewed, including five animal and three human studies. The results reported the regulation of the lipid profile, modulation of the intestinal microbiota and gene expression, and a decrease in mass gain as positive results when S. boulardii was administered. Although more experiments are needed to validate these results, especially using human models, there is a trend toward improvement in MetS and a reduction in its risk factors with the administration of S. boulardii.
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Affiliation(s)
- Mariana Buranelo Egea
- Goiano Federal Institute of Education, Science and Technology, Campus Rio Verde, Rio Verde 75901-970, Brazil
| | | | - Ailton Cesar Lemes
- Department of Biochemical Engineering, School of Chemistry, Federal University of Rio de Janeiro (UFRJ), Rio de Janeiro 21941-909, Brazil;
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10
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Durmusoglu D, Al'Abri I, Li Z, Islam Williams T, Collins LB, Martínez JL, Crook N. Improving therapeutic protein secretion in the probiotic yeast Saccharomyces boulardii using a multifactorial engineering approach. Microb Cell Fact 2023; 22:109. [PMID: 37287064 PMCID: PMC10245609 DOI: 10.1186/s12934-023-02117-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2023] [Accepted: 05/20/2023] [Indexed: 06/09/2023] Open
Abstract
The probiotic yeast Saccharomyces boulardii (Sb) is a promising chassis to deliver therapeutic proteins to the gut due to Sb's innate therapeutic properties, resistance to phage and antibiotics, and high protein secretion capacity. To maintain therapeutic efficacy in the context of challenges such as washout, low rates of diffusion, weak target binding, and/or high rates of proteolysis, it is desirable to engineer Sb strains with enhanced levels of protein secretion. In this work, we explored genetic modifications in both cis- (i.e. to the expression cassette of the secreted protein) and trans- (i.e. to the Sb genome) that enhance Sb's ability to secrete proteins, taking a Clostridioides difficile Toxin A neutralizing peptide (NPA) as our model therapeutic. First, by modulating the copy number of the NPA expression cassette, we found NPA concentrations in the supernatant could be varied by sixfold (76-458 mg/L) in microbioreactor fermentations. In the context of high NPA copy number, we found a previously-developed collection of native and synthetic secretion signals could further tune NPA secretion between 121 and 463 mg/L. Then, guided by prior knowledge of S. cerevisiae's secretion mechanisms, we generated a library of homozygous single gene deletion strains, the most productive of which achieved 2297 mg/L secretory production of NPA. We then expanded on this library by performing combinatorial gene deletions, supplemented by proteomics experiments. We ultimately constructed a quadruple protease-deficient Sb strain that produces 5045 mg/L secretory NPA, an improvement of > tenfold over wild-type Sb. Overall, this work systematically explores a broad collection of engineering strategies to improve protein secretion in Sb and highlights the ability of proteomics to highlight under-explored mediators of this process. In doing so, we created a set of probiotic strains that are capable of delivering a wide range of protein titers and therefore furthers the ability of Sb to deliver therapeutics to the gut and other settings to which it is adapted.
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Affiliation(s)
- Deniz Durmusoglu
- Department of Chemical and Biomolecular Engineering, North Carolina State University, Raleigh, NC, USA
| | - Ibrahim Al'Abri
- Department of Chemical and Biomolecular Engineering, North Carolina State University, Raleigh, NC, USA
| | - Zidan Li
- Department of Chemical and Biomolecular Engineering, North Carolina State University, Raleigh, NC, USA
| | - Taufika Islam Williams
- Molecular Education, Technology and Research Innovation Center (METRIC), North Carolina State University, Raleigh, NC, USA
- Department of Chemistry, North Carolina State University, Raleigh, NC, USA
| | - Leonard B Collins
- Molecular Education, Technology and Research Innovation Center (METRIC), North Carolina State University, Raleigh, NC, USA
| | - José L Martínez
- Department of Biotechnology and Biomedicine, Technical University of Denmark, Kgs. Lyngby, Denmark
| | - Nathan Crook
- Department of Chemical and Biomolecular Engineering, North Carolina State University, Raleigh, NC, USA.
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Zeng Z, Yue W, Kined C, Wang P, Liu R, Liu J, Chen X. Bacillus licheniformis reverses the environmental ceftriaxone sodium-induced gut microbial dysbiosis and intestinal inflammation in mice. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2023; 257:114890. [PMID: 37084659 DOI: 10.1016/j.ecoenv.2023.114890] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/06/2023] [Revised: 03/18/2023] [Accepted: 04/08/2023] [Indexed: 05/03/2023]
Abstract
Antibiotics used as a common clinical treatment have saved many lives. Widespread use of antibiotic therapy has been known to disrupt the balance of pathogenic bacteria, host-associated microorganisms and environment. However, our understanding of Bacillus licheniformis for health benefits and ability to restore the ceftriaxone sodium-induced gut microbial dysbiosis is severely limited. We used Caco-2 cell, H&E (hematoxylin-eosin staining), RT-PCR and 16S rRNA sequencing techniques to investigate the influence of Bacillus licheniformis on gut microbial dysbiosis and inflammation following ceftriaxone sodium treatment. The results showed that treatment of ceftriaxone sodium in 7 days suppressed the expression of Nf-κB pathway mRNA levels, which caused cytoplasmic vacuolization in intestinal tissues, afterward, the administration of Bacillus licheniformis could effectively restore intestinal morphology and inflammation levels. Moreover, the ceftriaxone sodium treatment entirely affected the intestinal microbial ecology, leading to a decrease in microbial abundance. Firmicutes, Proteobacteria, and Epsilonbacteraeota were the most predominant phyla in each of the four groups. Specifically, the MA group (ceftriaxone sodium treatment) resulted in a significant decrease in the relative abundance of 2 bacterial phyla and 20 bacterial genera compared to the administration of Bacillus licheniformis after ceftriaxone sodium treatment. The supplementation of Bacillus licheniformis could increase the growth of Firmicutes and Lactobacillus and encourage the construction of a more mature and stable microbiome. Furthermore, Bacillus licheniformis could restore the intestinal microbiome disorders and inflammation levels following ceftriaxone sodium treatment.
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Affiliation(s)
- Zhibo Zeng
- Institute of Animal Husbandry and Veterinary Medicine/Fujian Key Laboratory of Animal Genetics and Breeding, Fujian Academy of Agricultural Sciences, Fuzhou 350013, PR China; College of Veterinary Medicine, Huazhong Agricultural University, Wuhan 430070, PR China; Institute of Agricultural Sciences, ETH Zurich, Universitaetstrasse 2, Zurich 8092, Switzerland
| | - Wen Yue
- Institute of Animal Husbandry and Veterinary Medicine/Fujian Key Laboratory of Animal Genetics and Breeding, Fujian Academy of Agricultural Sciences, Fuzhou 350013, PR China
| | - Cermon Kined
- Institute of Agricultural Sciences, ETH Zurich, Universitaetstrasse 2, Zurich 8092, Switzerland
| | - PengPeng Wang
- College of Veterinary Medicine, Huazhong Agricultural University, Wuhan 430070, PR China
| | - Ran Liu
- College of Veterinary Medicine, Huazhong Agricultural University, Wuhan 430070, PR China
| | - Jing Liu
- Institute of Animal Husbandry and Veterinary Medicine/Fujian Key Laboratory of Animal Genetics and Breeding, Fujian Academy of Agricultural Sciences, Fuzhou 350013, PR China
| | - Xinzhu Chen
- Institute of Animal Husbandry and Veterinary Medicine/Fujian Key Laboratory of Animal Genetics and Breeding, Fujian Academy of Agricultural Sciences, Fuzhou 350013, PR China.
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12
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Wu Y, Wang X, Yin Z, Dong J. Geotrichum candidum arthrospore cell wall particles as a novel carrier for curcumin encapsulation. Food Chem 2023; 404:134308. [PMID: 36323008 DOI: 10.1016/j.foodchem.2022.134308] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2022] [Revised: 09/09/2022] [Accepted: 09/14/2022] [Indexed: 11/24/2022]
Abstract
We report for the first time that curcumin is successfully encapsulated into a new natural pre-formed carrier, which was derived from arthrospore cell wall particles (APs) of probiotic Geotrichum candidum LG-8 and mainly composed of beta-1,4-glucan. Vacuum infusion process was used for efficient encapsulation of curcumin. The results showed that the encapsulation efficiency and yield of APs were 36.5 ± 0.9 % and 730.6 ± 26.5 μg/g (wet basis), respectively. Compared with the other probiotic carriers such as Saccharomyces cerevisiae, it could more effectively maintain the antioxidant property and storage capacity of curcumin under high temperature conditions. Simulated digestion was conducted to study in vitro release of curcumin encapsulated in APs, and showed a maximum bioaccessibility of 65.6 ± 3.8 %. In view of low-cost culture method, simple encapsulation process and high encapsulation capacity, G. candidum arthrospores as new natural encapsulation carriers have potential superiority in the practical application in food industry.
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Affiliation(s)
- Yueran Wu
- College of Pharmacy, Nanjing University of Chinese Medicine, Nanjing 210023, China; College of Food Science and Technology, Nanjing Agricultural University, 210095 Nanjing, Jiangsu, China
| | - Xiangnan Wang
- College of Pharmacy, Nanjing University of Chinese Medicine, Nanjing 210023, China; Key Research Laboratory of Chinese Medicine Processing of Jiangsu Province, Nanjing University of Chinese Medicine, Nanjing 210023, China
| | - Zhenzhen Yin
- College of Pharmacy, Nanjing University of Chinese Medicine, Nanjing 210023, China; Key Research Laboratory of Chinese Medicine Processing of Jiangsu Province, Nanjing University of Chinese Medicine, Nanjing 210023, China
| | - Jiajia Dong
- College of Pharmacy, Nanjing University of Chinese Medicine, Nanjing 210023, China; Key Research Laboratory of Chinese Medicine Processing of Jiangsu Province, Nanjing University of Chinese Medicine, Nanjing 210023, China.
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13
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Rousta N, Aslan M, Yesilcimen Akbas M, Ozcan F, Sar T, Taherzadeh MJ. Effects of fungal based bioactive compounds on human health: Review paper. Crit Rev Food Sci Nutr 2023; 64:7004-7027. [PMID: 36794421 DOI: 10.1080/10408398.2023.2178379] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/17/2023]
Abstract
Since the first years of history, microbial fermentation products such as bread, wine, yogurt and vinegar have always been noteworthy regarding their nutritional and health effects. Similarly, mushrooms have been a valuable food product in point of both nutrition and medicine due to their rich chemical components. Alternatively, filamentous fungi, which can be easier to produce, play an active role in the synthesis of some bioactive compounds, which are also important for health, as well as being rich in protein content. Therefore, this review presents some important bioactive compounds (bioactive peptides, chitin/chitosan, β-glucan, gamma-aminobutyric acid, L-carnitine, ergosterol and fructooligosaccharides) synthesized by fungal strains and their health benefits. In addition, potential probiotic- and prebiotic fungi were researched to determine their effects on gut microbiota. The current uses of fungal based bioactive compounds for cancer treatment were also discussed. The use of fungal strains in the food industry, especially to develop innovative food production, has been seen as promising microorganisms in obtaining healthy and nutritious food.
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Affiliation(s)
- Neda Rousta
- Swedish Centre for Resource Recovery, University of Borås, Borås, Sweden
| | - Melissa Aslan
- Swedish Centre for Resource Recovery, University of Borås, Borås, Sweden
- Department of Molecular Biology and Genetics, Gebze Technical University, Gebze-Kocaeli, Turkey
| | - Meltem Yesilcimen Akbas
- Department of Molecular Biology and Genetics, Gebze Technical University, Gebze-Kocaeli, Turkey
| | - Ferruh Ozcan
- Department of Molecular Biology and Genetics, Gebze Technical University, Gebze-Kocaeli, Turkey
| | - Taner Sar
- Swedish Centre for Resource Recovery, University of Borås, Borås, Sweden
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14
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Austriaco N. Yeast oral vaccines against infectious diseases. Front Microbiol 2023; 14:1150412. [PMID: 37138614 PMCID: PMC10149678 DOI: 10.3389/fmicb.2023.1150412] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2023] [Accepted: 03/31/2023] [Indexed: 05/05/2023] Open
Abstract
Vaccines that are delivered orally have several advantages over their counterparts that are administered via injection. Despite the advantages of oral delivery, however, approved oral vaccines are currently limited either to diseases that affect the gastrointestinal tract or to pathogens that have a crucial life cycle stage in the gut. Moreover, all of the approved oral vaccines for these diseases involve live-attenuated or inactivated pathogens. This mini-review summarizes the potential and challenges of yeast oral vaccine delivery systems for animal and human infectious diseases. These delivery systems utilize whole yeast recombinant cells that are consumed orally to transport candidate antigens to the immune system of the gut. This review begins with a discussion of the challenges associated with oral administration of vaccines and the distinct benefits offered by whole yeast delivery systems over other delivery systems. It then surveys the emerging yeast oral vaccines that have been developed over the past decade to combat animal and human diseases. In recent years, several candidate vaccines have emerged that can elicit the necessary immune response to provide significant protection against challenge by pathogen. They serve as proof of principle to show that yeast oral vaccines hold much promise.
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15
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Angulo M, Ramos A, Reyes-Becerril M, Guerra K, Monreal-Escalante E, Angulo C. Probiotic Debaryomyces hansenii CBS 8339 yeast enhanced immune responses in mice. 3 Biotech 2023; 13:28. [PMID: 36590244 PMCID: PMC9797638 DOI: 10.1007/s13205-022-03442-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2022] [Accepted: 12/17/2022] [Indexed: 12/29/2022] Open
Abstract
This study aimed to examine the effect of Debaryomyces hansenii CBS 8339 on innate immune responses in mice. Thirty BALB/c mice were randomly treated with phosphate buffered saline (PBS) (control) and two D. hansenii (Dh) doses: Dh 10ˆ6 CFU (colony forming units) and Dh 10ˆ8 CFU daily for 15 days. Spleen, blood, and gut samples were taken on days 7 and 15. Mouse splenocytes were isolated and challenged with Escherichia coli. Immunological assays and immune-related gene expressions were performed. Serum was obtained from blood for total IgA and IgG antibody titer determination. Gut samples were taken for yeast colonization assessment. Phagocytosis, respiratory burst activity, and nitric oxide production in mice were mainly enhanced (p < 0.05) upon 7 days of D. hansenii intake at a concentration of 10ˆ8 CFU before and after bacterial challenge. Moreover, oral D. hansenii in mice upregulated (p < 0.05) gene expression of pro-inflammatory cytokines (INF-γ, IL-6 and IL-1β) before or after E. coli challenge on day 7 but downregulated (p < 0.05) on day 15. Furthermore, total serum IgG and IgA titers were higher (p < 0.05) in Dh 10ˆ8 CFU at days 7 and 15, and only at day 7, respectively, than that in the other dose and control groups. Finally, D. hansenii was detected in the gut of mice that received the treatments, suggesting that yeast survived gastrointestinal transit. Altogether, a short period (7 days) of D. hansenii CBS 8339 oral delivery improved immune innate response on mice.
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Affiliation(s)
- Miriam Angulo
- Immunology and Vaccinology Group, Centro de Investigaciones Biológicas del Noroeste, S.C., Instituto Politécnico Nacional 195, Playa Palo de Santa Rita Sur, C.P. 23096 La Paz, BCS Mexico
| | - Abel Ramos
- Immunology and Vaccinology Group, Centro de Investigaciones Biológicas del Noroeste, S.C., Instituto Politécnico Nacional 195, Playa Palo de Santa Rita Sur, C.P. 23096 La Paz, BCS Mexico
| | - Martha Reyes-Becerril
- Immunology and Vaccinology Group, Centro de Investigaciones Biológicas del Noroeste, S.C., Instituto Politécnico Nacional 195, Playa Palo de Santa Rita Sur, C.P. 23096 La Paz, BCS Mexico
| | - Kevyn Guerra
- Immunology and Vaccinology Group, Centro de Investigaciones Biológicas del Noroeste, S.C., Instituto Politécnico Nacional 195, Playa Palo de Santa Rita Sur, C.P. 23096 La Paz, BCS Mexico
| | - Elizabeth Monreal-Escalante
- Immunology and Vaccinology Group, Centro de Investigaciones Biológicas del Noroeste, S.C., Instituto Politécnico Nacional 195, Playa Palo de Santa Rita Sur, C.P. 23096 La Paz, BCS Mexico
| | - Carlos Angulo
- Immunology and Vaccinology Group, Centro de Investigaciones Biológicas del Noroeste, S.C., Instituto Politécnico Nacional 195, Playa Palo de Santa Rita Sur, C.P. 23096 La Paz, BCS Mexico
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16
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Angulo M, Guerra K, Ramos A, Monreal-Escalante E, Martínez E, Angulo C. Potential assessment of probiotic Cystobasidium benthicum LR192 strain in mice. Arch Microbiol 2022; 204:729. [PMID: 36434432 DOI: 10.1007/s00203-022-03337-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2022] [Revised: 11/08/2022] [Accepted: 11/15/2022] [Indexed: 11/26/2022]
Abstract
Antibiotic bacterial resistant is a huge concern worldwide and probiotics offer an alternative to mitigate it. This study explores Cystobasidium benthicum LR192 as possible probiotic through microbiological and immunological analyses in mouse model. C. benthicum LR192 was isolated from lichens in a hyperarid environment in Baja California Sur, Mexico. First, microbiological analysis was assessed using 1 × 105 CFU/mL in YM broth: resistance to 1% of bile salts and pH of 2, 3 and 5 (control). Then, yeast capacity to adhere onto the intestinal mucosa and safety to mouse splenocytes were tested. Finally, immunological parameters (phagocytic ability, respiratory burst and myeloperoxidase activities, nitric oxide and IgG production) and immune-associated gene expression (IL-1β, IL-6 and INF-γ) were determined in daily supplemented mice with the yeast (1 × 108 CFU) at days 10 and 15. The results indicate that C. benthicum LR192 has medium resistance to bile salts and low pH, can adhere to the intestine and did not cause cytotoxicity in splenocytes. Immune parameters and immune-related gene expression indicated immunomodulation at day 10 and 15, specially in leucocytes challenged with Escherichia coli. In conclusion, C. benthicum LR192 showed safe potential probiotic properties, but further studies should be performed to confirm it as a probiotic prospect for humans.
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Affiliation(s)
- Miriam Angulo
- Immunology and Vaccinology Group, Centro de Investigaciones Biológicas del Noroeste, SC., Instituto Politécnico Nacional, 195, Playa Palo de Santa Rita Sur, La Paz, B.C.S. C.P. 23096, México
| | - Kevyn Guerra
- Immunology and Vaccinology Group, Centro de Investigaciones Biológicas del Noroeste, SC., Instituto Politécnico Nacional, 195, Playa Palo de Santa Rita Sur, La Paz, B.C.S. C.P. 23096, México
| | - Abel Ramos
- Immunology and Vaccinology Group, Centro de Investigaciones Biológicas del Noroeste, SC., Instituto Politécnico Nacional, 195, Playa Palo de Santa Rita Sur, La Paz, B.C.S. C.P. 23096, México
| | - Elizabeth Monreal-Escalante
- Immunology and Vaccinology Group, Centro de Investigaciones Biológicas del Noroeste, SC., Instituto Politécnico Nacional, 195, Playa Palo de Santa Rita Sur, La Paz, B.C.S. C.P. 23096, México
| | - Elizabeth Martínez
- Immunology and Vaccinology Group, Centro de Investigaciones Biológicas del Noroeste, SC., Instituto Politécnico Nacional, 195, Playa Palo de Santa Rita Sur, La Paz, B.C.S. C.P. 23096, México
| | - Carlos Angulo
- Immunology and Vaccinology Group, Centro de Investigaciones Biológicas del Noroeste, SC., Instituto Politécnico Nacional, 195, Playa Palo de Santa Rita Sur, La Paz, B.C.S. C.P. 23096, México.
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17
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Dermengiu NE, Milea ȘA, Burada BP, Stanciu S, Cîrciumaru A, Râpeanu G, Stănciuc N. A dark purple multifunctional ingredient from blueberry pomace enhanced with lactic acid bacteria for various applications. J Food Sci 2022; 87:4725-4737. [PMID: 36124384 DOI: 10.1111/1750-3841.16315] [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: 03/12/2022] [Revised: 07/20/2022] [Accepted: 08/10/2022] [Indexed: 12/01/2022]
Abstract
Nowadays, large quantities of berries are still being dumped or used for composting and animal feeding. The objective of this study was to customize a technological design for appropriate valorization of blueberry pomace into a shelf-life-stable, dark purple multifunctional ingredient, containing lactic acid bacteria (Lactobacillus casei), by freeze-drying. The main anthocyanins in blueberries freeze-dried inoculated pomace are malvidin 3-O-glucoside, peonidin 3-O-glucoside, and cyanidin 3-O-glucoside. A viable cells content of 4.75×108 CFU/g DW was found after freeze-drying and the ability of the freeze-dried powder to inhibit the DPPH radical was 171.98 ± 1.73 mMol Trolox/g DW. The results obtained from CIElab analysis show a tendency to red and blue, characteristic of blueberry anthocyanins. The bioaccesibility of anthocyanins from blueberry powder was 37.8% and the probiotic survival rate after passing through the digestion process was 49.56%. The inhibitory potential of the obtained powder on α-amylase, pancreatic lipase, and α-glucosidase and tyrosinase was assessed. A significant antidiabetic potential of the powder was found, with IC50 values for α-amylase of 2.61 ± 0.24 mg/ml and for α-glucosidase of 1.37 ± 0.01 mg/ml, significantly lower when compared to corresponding drugs used in current practices. The powder also showed a significant potential to inhibit tyrosinase, supporting the hypothesis that the pomace resulting from juice and wine manufacturing may be successfully used to develop multifunctional ingredients with significant health benefits. PRACTICAL APPLICATION: Nowadays, food scientists and industry are seeking technological alternatives to obtain functional ingredients, due to the global interest in translating and applying scientific knowledge to address consumers' health issues. In our study, a freeze-drying customized design involving the use of the blueberry pomace, pectin, and Lactobacillus casei was applied to develop an ingredient with multiple functions. Besides a remarkable color, the powder showed good antioxidant activity, in vitro cells viability, and inhibitory activity against some metabolic syndrome-associated enzymes.
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Affiliation(s)
| | - Ștefania Adelina Milea
- Faculty of Food Science and Engineering, Dunărea de Jos University of Galati, Galati, Romania
| | - Bogdan Păcularu Burada
- Faculty of Food Science and Engineering, Dunărea de Jos University of Galati, Galati, Romania
| | - Silvius Stanciu
- Faculty of Food Science and Engineering, Dunărea de Jos University of Galati, Galati, Romania
| | - Adrian Cîrciumaru
- Cross-Border Faculty, Dunarea de Jos University of Galati, Galați, Romania
| | - Gabriela Râpeanu
- Faculty of Food Science and Engineering, Dunărea de Jos University of Galati, Galati, Romania
| | - Nicoleta Stănciuc
- Faculty of Food Science and Engineering, Dunărea de Jos University of Galati, Galati, Romania
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18
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Ribeiro RA, Bourbon-Melo N, Sá-Correia I. The cell wall and the response and tolerance to stresses of biotechnological relevance in yeasts. Front Microbiol 2022; 13:953479. [PMID: 35966694 PMCID: PMC9366716 DOI: 10.3389/fmicb.2022.953479] [Citation(s) in RCA: 30] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2022] [Accepted: 07/11/2022] [Indexed: 01/18/2023] Open
Abstract
In industrial settings and processes, yeasts may face multiple adverse environmental conditions. These include exposure to non-optimal temperatures or pH, osmotic stress, and deleterious concentrations of diverse inhibitory compounds. These toxic chemicals may result from the desired accumulation of added-value bio-products, yeast metabolism, or be present or derive from the pre-treatment of feedstocks, as in lignocellulosic biomass hydrolysates. Adaptation and tolerance to industrially relevant stress factors involve highly complex and coordinated molecular mechanisms occurring in the yeast cell with repercussions on the performance and economy of bioprocesses, or on the microbiological stability and conservation of foods, beverages, and other goods. To sense, survive, and adapt to different stresses, yeasts rely on a network of signaling pathways to modulate the global transcriptional response and elicit coordinated changes in the cell. These pathways cooperate and tightly regulate the composition, organization and biophysical properties of the cell wall. The intricacy of the underlying regulatory networks reflects the major role of the cell wall as the first line of defense against a wide range of environmental stresses. However, the involvement of cell wall in the adaptation and tolerance of yeasts to multiple stresses of biotechnological relevance has not received the deserved attention. This article provides an overview of the molecular mechanisms involved in fine-tuning cell wall physicochemical properties during the stress response of Saccharomyces cerevisiae and their implication in stress tolerance. The available information for non-conventional yeast species is also included. These non-Saccharomyces species have recently been on the focus of very active research to better explore or control their biotechnological potential envisaging the transition to a sustainable circular bioeconomy.
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Affiliation(s)
- Ricardo A. Ribeiro
- Institute for Bioengineering and Biosciences, Instituto Superior Técnico, Universidade de Lisboa, Lisbon, Portugal
- Department of Bioengineering, Instituto Superior Técnico, Universidade de Lisboa, Lisbon, Portugal
- Associate Laboratory i4HB—Institute for Health and Bioeconomy at Instituto Superior Técnico, Universidade de Lisboa, Lisbon, Portugal
| | - Nuno Bourbon-Melo
- Institute for Bioengineering and Biosciences, Instituto Superior Técnico, Universidade de Lisboa, Lisbon, Portugal
| | - Isabel Sá-Correia
- Institute for Bioengineering and Biosciences, Instituto Superior Técnico, Universidade de Lisboa, Lisbon, Portugal
- Department of Bioengineering, Instituto Superior Técnico, Universidade de Lisboa, Lisbon, Portugal
- Associate Laboratory i4HB—Institute for Health and Bioeconomy at Instituto Superior Técnico, Universidade de Lisboa, Lisbon, Portugal
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19
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Yue F, Du L, Wang R, Han B, Zhang X, Yao Z, Zhang W, Cai C, Zhang Z, Xu K. In vivo Protein Interference: Oral Administration of Recombinant Yeast-Mediated Partial Leptin Reduction for Obesity Control. Front Microbiol 2022; 13:923656. [PMID: 35774455 PMCID: PMC9237534 DOI: 10.3389/fmicb.2022.923656] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2022] [Accepted: 05/17/2022] [Indexed: 12/17/2022] Open
Abstract
Obesity-related diseases are always the major health problems that concern the whole world. Serial studies have reported that obesity development is closely related to the out-of-control leptin encoded by the obesity gene (ob). The latest report declaimed “Less Is More,” a model explaining that partial leptin reduction triggers leptin sensitization and contributes to obesity control. Here, we came up with a novel concept, in vivo protein interference (iPRTi), an interesting protein knock-down strategy for in vivo partial leptin reduction. First, the specific immune response against leptin induced by the oral administration of ob recombinant yeast was confirmed. Subsequentally, leptin resistance was observed in diet-induced obese mice, and oral administration with ob recombinant yeast declined the circulating leptin and reduced significantly the body weight gain. To further investigate whether the iPRTi strategy is capable of obesity management, the diet-induced obese mice were administrated with ob recombinant yeast. All the indexes examined including the circulating leptin, triglyceride, and total cholesterol, as well as food intake and weight gain, demonstrated a positive effect of the iPRTi strategy on obesity control. In short, this study provides a novel strategy for the potential application of recombinant yeast for the therapy of obese individuals with leptin resistance.
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20
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Effects of broad-spectrum antibiotics on the colonisation of probiotic yeast Saccharomyces boulardii in the murine gastrointestinal tract. Sci Rep 2022; 12:8862. [PMID: 35614092 PMCID: PMC9133042 DOI: 10.1038/s41598-022-12806-0] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2022] [Accepted: 04/19/2022] [Indexed: 11/24/2022] Open
Abstract
Mouse models are commonly used to study the colonisation profiles of microorganisms introduced to the gastrointestinal tract. Three commonly used mouse models include conventional, germ-free, and antibiotic-treated mice. However, colonisation resistance in conventional mice and specialised equipment for germ-free mice are usually limiting factors in their applications. In this study, we sought to establish a robust colonisation model for Saccharomyces boulardii, a probiotic yeast that has caught attention in the field of probiotics and advanced microbiome therapeutics. We characterised the colonisation of S. boulardii in conventional mice and mice treated with a cocktail of broad-spectrum antibiotics, including ampicillin, kanamycin, metronidazole and vancomycin. We found colonisation levels increased up to 10,000-fold in the antibiotic-treated mice compared to nonantibiotic-treated mice. Furthermore, S. boulardii was detected continuously in more than 75% of mice for 10 days after the last administration in antibiotic-treated mice, in contrast to in nonantibiotic-treated mice where S. boulardii was undetectable in less than 2 days. Finally, we demonstrated that this antibiotic cocktail can be used in two commonly used mouse strains, C57BL/6 and ob/ob mice, both achieving ~ 108 CFU/g of S. boulardii in faeces. These findings highlight that the antibiotic cocktail used in this study is an advantageous tool to study S. boulardii based probiotic and advanced microbiome therapeutics.
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21
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Development of a shelf-stable, gel-based delivery system for probiotics by encapsulation, 3D printing, and freeze-drying. Lebensm Wiss Technol 2022. [DOI: 10.1016/j.lwt.2022.113075] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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22
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Dissection and enhancement of prebiotic properties of yeast cell wall oligosaccharides through metabolic engineering. Biomaterials 2022; 282:121379. [DOI: 10.1016/j.biomaterials.2022.121379] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2021] [Revised: 12/09/2021] [Accepted: 01/16/2022] [Indexed: 02/06/2023]
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23
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Ansari F, Alian Samakkhah S, Bahadori A, Jafari SM, Ziaee M, Khodayari MT, Pourjafar H. Health-promoting properties of Saccharomyces cerevisiae var. boulardii as a probiotic; characteristics, isolation, and applications in dairy products. Crit Rev Food Sci Nutr 2021; 63:457-485. [PMID: 34254862 DOI: 10.1080/10408398.2021.1949577] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
Saccharomyces cerevisiae var. boulardii (S. boulardii) has been isolated from lychee (Litchi chinensis), mangosteen fruit, kombucha, and dairy products like kefir. Dairy products containing S. boulardii have been revealed to possess potential probiotic activities owing to their ability to produce organic acids, essential enzymes, vitamins, and other important metabolites such as vanillic acid, phenyl ethyl alcohol, and erythromycin. S. boulardii has a wide spectrum of anti-carcinogenic, antibacterial antiviral, and antioxidant activity, and is known to reduce serum cholesterol levels. However, this yeast has mainly been prescribed for prophylaxis treatment of gastrointestinal infectious diseases, and stimulating the immune system in a number of commercially available products. The present comprehensive review article reviews the properties of S. boulardii related to their use in fermented dairy foods as a probiotic microorganism or starter culture. Technical aspects regarding the integration of this yeast into the dairy foods matrix its health advantages, therapeutic functions, microencapsulation, and viability in harsh conditions, and safety aspects are highlighted.
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Affiliation(s)
- Fereshteh Ansari
- Razi Vaccine and Serum Research Institute, Agricultural Research, Education and Extension Organization (AREEO), Tehran, Iran.,Research Center for Evidence-Based Medicine, Health Management and Safety Promotion Research Institute, Tabriz University of Medical Sciences, Tabriz, Iran.,Iranian EBM Centre: A Joanna Briggs Institute Affiliated Group
| | - Shohre Alian Samakkhah
- Department of Food Hygiene and Quality Control, Faculty of Veterinary of Medicine, Amol University of Special Modern Technology, Amol, Iran
| | - Ali Bahadori
- Department of Medical Microbiology, Sarab Faculty of Medical Sciences, Sarab, Iran
| | - Seyedeh Maedeh Jafari
- Department of Comparative Bioscience, Faculty of Veterinary Medicine, Tehran University, Tehran, Iran
| | - Mojtaba Ziaee
- Medicinal Plants Research Center, Maragheh University of Medical Sciences, Maragheh, Iran
| | | | - Hadi Pourjafar
- Alborz University of Medical Sciences, Dietary Supplements and Probiotic Research Center, Karaj, Iran.,Department of Food Sciences, Maragheh University of Medical Sciences, Maragheh, Iran
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Chen K, Zhu Y, Zhang Y, Hamza T, Yu H, Saint Fleur A, Galen J, Yang Z, Feng H. A probiotic yeast-based immunotherapy against Clostridioides difficile infection. Sci Transl Med 2021; 12:12/567/eaax4905. [PMID: 33115949 DOI: 10.1126/scitranslmed.aax4905] [Citation(s) in RCA: 52] [Impact Index Per Article: 17.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2019] [Revised: 02/12/2020] [Accepted: 10/07/2020] [Indexed: 12/12/2022]
Abstract
Antibiotic-resistant Clostridioides difficile is an anaerobic Gram-positive bacterium that colonizes the colon and is responsible for more than 29,000 deaths in the United States each year. Hence, C. difficile infection (CDI) poses an urgent threat to public health. Antibody-mediated neutralization of TcdA and TcdB toxins, the major virulence factors of CDI, represents an effective strategy to combat the disease without invoking antibiotic resistance. However, current antitoxin approaches are mostly based on parenteral infusion of monoclonal antibodies that are costly, narrow spectrum, and not optimized against the intestinal disease. Here, we engineered probiotic Saccharomyces boulardii to constitutively secrete a single tetra-specific antibody that potently and broadly neutralized both toxins and demonstrated protection against primary and recurrent CDI in both prophylactic and therapeutic mouse models of disease. This yeast immunotherapy is orally administered, can be used concurrently with antibiotics, and may have potential as a prophylactic against CDI risk and as a therapeutic for patients with CDI.
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Affiliation(s)
- Kevin Chen
- Department of Microbial Pathogenesis, University of Maryland School of Dentistry, Baltimore, MD 21201, USA
| | - Yixuan Zhu
- Center for Vaccine Development, University of Maryland School of Medicine, Baltimore, MD 21201, USA
| | - Yongrong Zhang
- Department of Microbial Pathogenesis, University of Maryland School of Dentistry, Baltimore, MD 21201, USA
| | - Therwa Hamza
- Department of Microbial Pathogenesis, University of Maryland School of Dentistry, Baltimore, MD 21201, USA
| | - Hua Yu
- FZata Inc., Halethorpe, MD 21227, USA
| | - Ashley Saint Fleur
- Department of Microbial Pathogenesis, University of Maryland School of Dentistry, Baltimore, MD 21201, USA
| | - James Galen
- Center for Vaccine Development, University of Maryland School of Medicine, Baltimore, MD 21201, USA
| | | | - Hanping Feng
- Department of Microbial Pathogenesis, University of Maryland School of Dentistry, Baltimore, MD 21201, USA.
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Durmusoglu D, Al’Abri IS, Collins SP, Cheng J, Eroglu A, Beisel CL, Crook N. In Situ Biomanufacturing of Small Molecules in the Mammalian Gut by Probiotic Saccharomyces boulardii. ACS Synth Biol 2021; 10:1039-1052. [PMID: 33843197 DOI: 10.1021/acssynbio.0c00562] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Saccharomyces boulardii is a probiotic yeast that exhibits rapid growth at 37 °C, is easy to transform, and can produce therapeutic proteins in the gut. To establish its ability to produce small molecules encoded by multigene pathways, we measured the amount and variance in protein expression enabled by promoters, terminators, selective markers, and copy number control elements. We next demonstrated efficient (>95%) CRISPR-mediated genome editing in this strain, allowing us to probe engineered gene expression across different genomic sites. We leveraged these strategies to assemble pathways enabling a wide range of vitamin precursor (β-carotene) and drug (violacein) titers. We found that S. boulardii colonizes germ-free mice stably for over 30 days and competes for niche space with commensal microbes, exhibiting short (1-2 day) gut residence times in conventional and antibiotic-treated mice. Using these tools, we enabled β-carotene synthesis (194 μg total) in the germ-free mouse gut over 14 days, estimating that the total mass of additional β-carotene recovered in feces was 56-fold higher than the β-carotene present in the initial probiotic dose. This work quantifies heterologous small molecule production titers by S. boulardii living in the mammalian gut and provides a set of tools for modulating these titers.
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Affiliation(s)
- Deniz Durmusoglu
- Department of Chemical and Biomolecular Engineering, North Carolina State University, Raleigh, North Carolina 27695, United States
| | - Ibrahim S. Al’Abri
- Department of Chemical and Biomolecular Engineering, North Carolina State University, Raleigh, North Carolina 27695, United States
| | - Scott P. Collins
- Department of Chemical and Biomolecular Engineering, North Carolina State University, Raleigh, North Carolina 27695, United States
| | - Junrui Cheng
- Plants for Human Health Institute, North Carolina State University, 600 Laureate Way, Room 3204, Kannapolis, North Carolina 28081, United States
| | - Abdulkerim Eroglu
- Plants for Human Health Institute, North Carolina State University, 600 Laureate Way, Room 3204, Kannapolis, North Carolina 28081, United States
- Department of Molecular and Structural Biochemistry, College of Agriculture and Life Sciences, North Carolina State University, 120 Broughton Drive, Room 351, Raleigh, North Carolina 27695-7622, United States
| | - Chase L. Beisel
- Department of Chemical and Biomolecular Engineering, North Carolina State University, Raleigh, North Carolina 27695, United States
- Helmholtz Institute for RNA-based Infection Research (HIRI), Helmholtz Centre for Infection Research (HZI), Würzburg 97080, Germany
| | - Nathan Crook
- Department of Chemical and Biomolecular Engineering, North Carolina State University, Raleigh, North Carolina 27695, United States
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Rengel Dos Passos F, Lopes Maestre K, Florêncio da Silva B, Rodrigues AC, Contini Triques C, Alves Garcia H, Fagundes-Klen MR, Antonio da Silva E, Fiorese ML. Production of a synbiotic composed of galacto-oligosaccharides and Saccharomyces boulardii using enzymatic-fermentative method. Food Chem 2021; 353:129486. [PMID: 33735774 DOI: 10.1016/j.foodchem.2021.129486] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2020] [Revised: 02/11/2021] [Accepted: 02/24/2021] [Indexed: 12/11/2022]
Abstract
Motivated by the search for healthy alimentation and sustainable technological processes, this study aimed to produce a synbiotic composed of the prebiotic galacto-oligosaccharides (GOS) and the probiotic yeast Saccharomyces boulardii, simultaneously, using cheese whey permeate as substrate by enzymatic-fermentative method. A central composite rotatable design with center point was used to evaluate the influence of temperature and enzyme concentration in the GOS and S. boulardii production. The best condition to obtain the prebiotic was at 32 °C and enzyme concentration of 0.175% (w/w), providing 56.84 g L-1 of GOS concentration and Ln(3.59) 107 viable cells mL-1 of S. boulardii production. However, the condition that would favor the simultaneous production of GOS and S. boulardii studied through desirability function is 29.5 °C and 0.14% (w/w) of enzyme concentration. The simultaneous enzymatic-fermentative method showed promising results considering industrial application and can be easily incorporated into dairy production lines as functional food.
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Affiliation(s)
- Fernanda Rengel Dos Passos
- Postgraduate Program of Chemical Engineering, West Paraná State University - UNIOESTE, Rua da Faculdade 645, Jd. Santa Maria, Toledo 85903-000, PR, Brazil.
| | - Keiti Lopes Maestre
- Postgraduate Program of Chemical Engineering, West Paraná State University - UNIOESTE, Rua da Faculdade 645, Jd. Santa Maria, Toledo 85903-000, PR, Brazil
| | - Beatriz Florêncio da Silva
- West Paraná State University - UNIOESTE, Rua da Faculdade 645, Jd. Santa Maria, Toledo 85903-000, PR, Brazil
| | - Angela Claudia Rodrigues
- Department of Chemistry, Federal University of Technology - Paraná - UTFPR, Av. Brasil, 4232, Parque Independência, Medianeira 85884-000, PR, Brazil
| | - Carina Contini Triques
- Postgraduate Program of Chemical Engineering, West Paraná State University - UNIOESTE, Rua da Faculdade 645, Jd. Santa Maria, Toledo 85903-000, PR, Brazil
| | - Helio Alves Garcia
- Sooro Renner Nutrição S.A. Rod. BR 163 - Km 283,8, Marechal Cândido Rondon, 85960-000 PR, Brazil
| | - Márcia Regina Fagundes-Klen
- Postgraduate Program of Chemical Engineering, West Paraná State University - UNIOESTE, Rua da Faculdade 645, Jd. Santa Maria, Toledo 85903-000, PR, Brazil
| | - Edson Antonio da Silva
- Postgraduate Program of Chemical Engineering, West Paraná State University - UNIOESTE, Rua da Faculdade 645, Jd. Santa Maria, Toledo 85903-000, PR, Brazil
| | - Mônica Lady Fiorese
- Postgraduate Program of Chemical Engineering, West Paraná State University - UNIOESTE, Rua da Faculdade 645, Jd. Santa Maria, Toledo 85903-000, PR, Brazil
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Kiousi DE, Rathosi M, Tsifintaris M, Chondrou P, Galanis A. Pro-biomics: Omics Technologies To Unravel the Role of Probiotics in Health and Disease. Adv Nutr 2021; 12:1802-1820. [PMID: 33626128 PMCID: PMC8483974 DOI: 10.1093/advances/nmab014] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2020] [Revised: 12/29/2020] [Accepted: 01/26/2021] [Indexed: 12/11/2022] Open
Abstract
The comprehensive characterization of probiotic action has flourished during the past few decades, alongside the evolution of high-throughput, multiomics platforms. The integration of these platforms into probiotic animal and human studies has provided valuable insights into the holistic effects of probiotic supplementation on intestinal and extraintestinal diseases. Indeed, these methodologies have informed about global molecular changes induced in the host and residing commensals at multiple levels, providing a bulk of metagenomic, transcriptomic, proteomic, and metabolomic data. The meaningful interpretation of generated data remains a challenge; however, the maturation of the field of systems biology and artificial intelligence has supported analysis of results. In this review article, we present current literature on the use of multiomics approaches in probiotic studies, we discuss current trends in probiotic research, and examine the possibility of tailor-made probiotic supplementation. Lastly, we delve deeper into newer technologies that have been developed in the last few years, such as single-cell multiomics analyses, and provide future directions for the maximization of probiotic efficacy.
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Affiliation(s)
- Despoina Eugenia Kiousi
- Department of Molecular Biology and Genetics, Faculty of Health Sciences, Democritus University of Thrace, Alexandroupolis, Greece
| | - Marina Rathosi
- Department of Molecular Biology and Genetics, Faculty of Health Sciences, Democritus University of Thrace, Alexandroupolis, Greece
| | - Margaritis Tsifintaris
- Department of Molecular Biology and Genetics, Faculty of Health Sciences, Democritus University of Thrace, Alexandroupolis, Greece
| | - Pelagia Chondrou
- Department of Molecular Biology and Genetics, Faculty of Health Sciences, Democritus University of Thrace, Alexandroupolis, Greece
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Silva L, Schmidt G, Alves L, Oliveira V, Laureano-Melo R, Stutz E, Martins J, Paula B, Luchese R, Guerra A, Rodrigues P. Use of probiotic strains to produce beers by axenic or semi-separated co-culture system. FOOD AND BIOPRODUCTS PROCESSING 2020. [DOI: 10.1016/j.fbp.2020.10.001] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Villot C, Chen Y, Pedgerachny K, Chaucheyras-Durand F, Chevaux E, Skidmore A, Guan LL, Steele MA. Early supplementation of Saccharomyces cerevisiae boulardii CNCM I-1079 in newborn dairy calves increases IgA production in the intestine at 1 week of age. J Dairy Sci 2020; 103:8615-8628. [PMID: 32684462 DOI: 10.3168/jds.2020-18274] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2020] [Accepted: 04/22/2020] [Indexed: 01/22/2023]
Abstract
The early development of immunity and microbiota in the gut of newborn calves can have life-long consequences. Gut microbiota and the intestinal barrier interplay after birth, establishing a homeostatic state whereby mucosal cells cohabit with microorganisms to develop a healthy gut. We hypothesized that postnatal codevelopment of gut immunity and microbiota could be influenced by early-life supplementation with live yeast. Starting from birth, calves either received a daily supplementation of Saccharomyces cerevisiae boulardii CNCM I-1079 (SCB, 10 × 109 cfu/d, n = 10) in the morning meal for 7 d or no supplementation (n = 10). Each animal received 2 adequate colostrum replacer meals at 2 and 12 h of life (expected total IgG fed = 300 g) before being fed milk replacer twice a day. Passive transfer of immunity (total protein, IgG, and IgA) through colostrum was evaluated and endogenous production of IgA was investigated by measuring IgA-producing plasma cells, IgA relative gene expression (PIGR and CD79A), and secretory IgA concentration in the gut. The concentration of targeted microbial groups was evaluated with quantitative PCR in the gut digesta collected at d 7 of life. Early SCB supplementation did not impair immunoglobulin absorption and all calves had successful passive transfer of immunity (serum IgG concentration >15 mg/mL at d 1 and d 7 of age). Although the expression of IgA relative gene expression (PIGR and CD79A) was not different, SCB calves had higher secretory IgA concentrations in the ileum (1.98 ± 0.12 mg/g of dry matter; DM) and colon (1.45 ± 0.12 mg/g of DM) digesta compared with control animals (1.18 and 0.59 ± 0.12 mg/g of DM, respectively). In addition, the number of IgA-producing plasma cells were greater in both ileum (2.55 ± 0.40 cells/mm2) and colon (3.03 ± 0.40 cells/mm2) tissues for SCB calves compared with control (respectively 1.00 ± 0.40 and 0.60 ± 0.42 cells/mm2). Endogenous IgA production in the gut of SCB calves was enhanced, which could make them less prone to pathogen intrusion. In addition, SCB calves had higher Lactobacillus and tended to have higher Faecalibacterium prausnitzii in the jejunum compared with control calves, which suggests that SCB supplementation during early-life gut colonization may have a positive effect in newborn calves. Direct SCB supplementation or the cross-talk between SCB and bacteria may be responsible for stimulating IgA production and may play a key role in shaping early colonization in the gut of newborn calves.
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Affiliation(s)
- C Villot
- Department of Agricultural, Food and Nutritional Science, University of Alberta, Edmonton T6G 2P5, Canada; Lallemand SAS, F-31702 Blagnac, France
| | - Y Chen
- Department of Agricultural, Food and Nutritional Science, University of Alberta, Edmonton T6G 2P5, Canada; Lethbridge Research Center, Agriculture and Agri-Food Canada, Lethbridge, AB T1J 4B1, Canada
| | - K Pedgerachny
- Department of Agricultural, Food and Nutritional Science, University of Alberta, Edmonton T6G 2P5, Canada
| | | | - E Chevaux
- Lallemand SAS, F-31702 Blagnac, France
| | - A Skidmore
- Lallemand Specialties Inc, Milwaukee, WI 53218
| | - L L Guan
- Department of Agricultural, Food and Nutritional Science, University of Alberta, Edmonton T6G 2P5, Canada
| | - M A Steele
- Department of Agricultural, Food and Nutritional Science, University of Alberta, Edmonton T6G 2P5, Canada; Department of Animal Biosciences, University of Guelph, Guelph, ON N1G 2W1, Canada.
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A Multi-Scale Approach to Investigate Adhesion Properties of Pseudomonas aeruginosa PAO1 to Geotrichum candidum LG-8, a Potential Probiotic Yeast. Foods 2020; 9:foods9070912. [PMID: 32664462 PMCID: PMC7405016 DOI: 10.3390/foods9070912] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2020] [Revised: 07/07/2020] [Accepted: 07/08/2020] [Indexed: 01/18/2023] Open
Abstract
This study investigated properties of Pseudomonas aeruginosa PAO1 adhesion to Geotrichum candidum LG-8 cells in variable pH and salt conditions. The primary mechanism was revealed by multi-scale microscopy technics. The adhesion of PAO1 to the living fungus occurred within 1 h and was limited at concentrations of bile salts higher than 0.5%. The adhesion efficiency gradually increased to 58.1% with the pH increasing from 2.0 to 7.0 and then decreased to 48.2% at pH 9.0. However, the dead LG-8 has an advantage over the living ones to adhere PAO1 in same pH and bile salt conditions. Optical microscopy showed that both unsterilized and sterilized G. candidum LG-8 cells removed approximately one hundred fold bacteria in 4 h. Laser scanning confocal microscopy (LSCM) analysis indicated that polysaccharides of the fungus contributed to adhesion. Scanning electron microscopy (SEM) analysis proved that syrup-like EPS (extracellular polymeric substances) of LG-8 coating PAO1 was in part a mechanism. Atomic force microscopy (AFM) showed roughness of the LG-8 surface changed in the adhesion process. Furthermore, a pedestal-like structure of bacteria was observed by transmission electron microscopy (TEM) analysis, indicating that the bacteria were also actively involved in the adhesion process. G. candidum LG-8 is a potential candidate for the control of P. aeruginosa PAO1 in the food industry and immunodeficiency patients.
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31
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Hossain MN, Afrin S, Humayun S, Ahmed MM, Saha BK. Identification and Growth Characterization of a Novel Strain of Saccharomyces boulardii Isolated From Soya Paste. Front Nutr 2020; 7:27. [PMID: 32309286 PMCID: PMC7145964 DOI: 10.3389/fnut.2020.00027] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2019] [Accepted: 02/26/2020] [Indexed: 12/19/2022] Open
Abstract
The nonpathogenic yeast Saccharomyces boulardii (Sb) has beneficial effects on the human intestine, and thus has been prescribed as probiotics for the treatment of diarrhea and gastrointestinal diseases. This is the only commercialized yeast with the purpose of being used as human medicine. Currently, little is known about their multiple mechanisms of actions. The S. boulardii yeast strain is isolated and identified by using the BIOLOGTM microarray identification system and morphologically. To understand its functional roles, the present study investigates the ability of this yeast to tolerate different concentrations of bile salt up to 2.5%, cell hydrophobicity, antioxidants, autoaggregation activity, and simulated gastrointestinal digestion. The effect of temperatures (up to 50°C), pH (up to 8.0), and salinity (at best 7%) was also monitored on the growth and survival of the yeast cell. The physicochemical analyses revealed that S. boulardii could survive in stomach conditions at pH 2.5, temperature 37°C, and 2% bile salt. Antibiotic susceptibility of S. boulardii was carried out using commercial antibiotic discs. The antimicrobial activity of the isolated S. boulardii against bacterial pathogens related to diarrhea diseases was in-vitro determined by the Well Diffusion method. The biosafety assay findings also claimed S. boulardii could be a potential probiotic. The experimental findings suggest that the isolated S. boulardii possesses excellent probiotic capacities as a biotherapeutic agent for antidiarrheal and gastrointestinal disorders.
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Affiliation(s)
- Md Nur Hossain
- Institute of Food Science and Technology, Bangladesh Council of Scientific and Industrial Research, Dhaka, Bangladesh
| | - Sadia Afrin
- Institute of Food Science and Technology, Bangladesh Council of Scientific and Industrial Research, Dhaka, Bangladesh
| | - Sanjida Humayun
- Institute of Food Science and Technology, Bangladesh Council of Scientific and Industrial Research, Dhaka, Bangladesh
| | - Monzur Morshed Ahmed
- Institute of Food Science and Technology, Bangladesh Council of Scientific and Industrial Research, Dhaka, Bangladesh
| | - Barun Kanti Saha
- Institute of Food Science and Technology, Bangladesh Council of Scientific and Industrial Research, Dhaka, Bangladesh
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32
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Omara AMA, Sharaf AEMM, El-Hela AA, Shahin AAM, El-Bialy HAA, El-Fouly MZ. Optimizing ectoine biosynthesis using response surface methodology and osmoprotectant applications. Biotechnol Lett 2020; 42:1003-1017. [PMID: 32062816 DOI: 10.1007/s10529-020-02833-0] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2019] [Accepted: 02/04/2020] [Indexed: 11/28/2022]
Abstract
PURPOSE Numerous applications of compatible salts (osmolytes) as ectoine in food and pharmaceutical industries have been intensively increased nowadays. Decreasing the cost of industrial production of ectoine using low-cost cultivation media and improving the yield through modeling procedures are the main scopes of the present study. METHODS Three statistical design experiments have been successfully applied for screening the parameters affecting the production process, studying the relations among parameters and optimizing the production using response surface methodology. RESULTS A novel semi-synthetic medium based on hydrolyzed corn gluten meal has been developed to cultivate moderate halophilic bacterial strains; Vibrio sp. CS1 and Salinivibrio costicola SH3, and support ectoine synthesis under salinity stress. Two regression equations describe the production process in the new medium have been formulated for each bacterial strain. Response surface optimizer of the central composite model predicts the maximum ectoine production is achieved at incubation time; 63.7 h, pH; 7.47 and salinity; 7.27% for Vibrio sp. CS1 whereas these variables should be adjusted at 56.95 h, 7.089 and 10.34%; on the same order regarding Salinivibrio costicola SH3. In application studies, 50 µg ectoine decreases RBCs hemolysis due to streptolysin O toxin by 21.7% within ten minutes. In addition, 2% ectoine succeeds to increase the viability of lactic acid bacteria in Yogurt as a classic example of functional food during the storage period (7 days). CONCLUSION The present study emphasizes on modeling the process of ectoine production by halophilic bacteria as well as its activity as a cryoprotectant agent.
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Affiliation(s)
- Ahmed M A Omara
- Radiation Microbiology Department, National Center for Radiation Research and Technology (NCRRT), Atomic Energy Authority, Cairo, Egypt
| | | | | | - Azza A M Shahin
- Radiation Microbiology Department, National Center for Radiation Research and Technology (NCRRT), Atomic Energy Authority, Cairo, Egypt
| | - Heba Abd Alla El-Bialy
- Radiation Microbiology Department, National Center for Radiation Research and Technology (NCRRT), Atomic Energy Authority, Cairo, Egypt.
| | - Mohie Z El-Fouly
- Radiation Microbiology Department, National Center for Radiation Research and Technology (NCRRT), Atomic Energy Authority, Cairo, Egypt
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Xiang Q, Wu X, Pan Y, Wang L, Cui C, Guo Y, Zhu L, Peng J, Wei H. Early-Life Intervention Using Fecal Microbiota Combined with Probiotics Promotes Gut Microbiota Maturation, Regulates Immune System Development, and Alleviates Weaning Stress in Piglets. Int J Mol Sci 2020; 21:ijms21020503. [PMID: 31941102 PMCID: PMC7014131 DOI: 10.3390/ijms21020503] [Citation(s) in RCA: 51] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2019] [Revised: 01/01/2020] [Accepted: 01/07/2020] [Indexed: 02/07/2023] Open
Abstract
Previous studies have suggested that immune system development and weaning stress are closely related to the maturation of gut microbiota. The early-life period is a “window of opportunity” for microbial colonization, which potentially has a critical impact on the development of the immune system. Fecal microbiota transplantation (FMT) and probiotics are often used to regulate gut microbial colonization. This study aims to test whether early intervention with FMT using fecal microbiota from gestation sows combined with Clostridium butyricum and Saccharomyces boulardii (FMT-CS) administration could promote the maturation of gut microbiota and development of immune system in piglets. Piglets were assigned to control (n = 84) and FMT-CS treatment (n = 106), which were treated with placebo and bacterial suspension during the first three days after birth, respectively. By 16S rRNA gene sequencing, we found that FMT-CS increased the α-diversity and reduced the unweighted UniFrac distances of the OTU community. Besides, FMT-CS increased the relative abundance of beneficial bacteria, while decreasing that of opportunistic pathogens. FMT-CS also enhanced the relative abundance of genes related to cofactors and vitamin, energy, and amino acid metabolisms during the early-life period. ELISA analysis revealed that FMT-CS gave rise to the plasma concentrations of IL-23, IL-17, and IL-22, as well as the plasma levels of anti-M.hyo and anti-PCV2 antibodies. Furthermore, the FMT-CS-treated piglets showed decreases in inflammation levels and oxidative stress injury, and improvement of intestinal barrier function after weaning as well. Taken together, our results suggest that early-life intervention with FMT-CS could promote the development of innate and adaptive immune system and vaccine efficacy, and subsequently alleviate weaning stress through promoting the maturation of gut microbiota in piglets.
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Affiliation(s)
- Quanhang Xiang
- Department of Animal Nutrition and Feed Science, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan 430070, China; (Q.X.); (X.W.); (Y.P.); (L.W.); (C.C.); (Y.G.); (L.Z.)
| | - Xiaoyu Wu
- Department of Animal Nutrition and Feed Science, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan 430070, China; (Q.X.); (X.W.); (Y.P.); (L.W.); (C.C.); (Y.G.); (L.Z.)
| | - Ye Pan
- Department of Animal Nutrition and Feed Science, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan 430070, China; (Q.X.); (X.W.); (Y.P.); (L.W.); (C.C.); (Y.G.); (L.Z.)
| | - Liu Wang
- Department of Animal Nutrition and Feed Science, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan 430070, China; (Q.X.); (X.W.); (Y.P.); (L.W.); (C.C.); (Y.G.); (L.Z.)
| | - Chenbin Cui
- Department of Animal Nutrition and Feed Science, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan 430070, China; (Q.X.); (X.W.); (Y.P.); (L.W.); (C.C.); (Y.G.); (L.Z.)
| | - Yuwei Guo
- Department of Animal Nutrition and Feed Science, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan 430070, China; (Q.X.); (X.W.); (Y.P.); (L.W.); (C.C.); (Y.G.); (L.Z.)
| | - Lingling Zhu
- Department of Animal Nutrition and Feed Science, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan 430070, China; (Q.X.); (X.W.); (Y.P.); (L.W.); (C.C.); (Y.G.); (L.Z.)
| | - Jian Peng
- Department of Animal Nutrition and Feed Science, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan 430070, China; (Q.X.); (X.W.); (Y.P.); (L.W.); (C.C.); (Y.G.); (L.Z.)
- The Cooperative Innovation Center for Sustainable Pig Production, Wuhan 400700, China
- Hubei Agricultural Sciences and Technology Innovation Center, Wuhan 430070, China
- Correspondence: (J.P.); (H.W.)
| | - Hongkui Wei
- Department of Animal Nutrition and Feed Science, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan 430070, China; (Q.X.); (X.W.); (Y.P.); (L.W.); (C.C.); (Y.G.); (L.Z.)
- The Cooperative Innovation Center for Sustainable Pig Production, Wuhan 400700, China
- Hubei Agricultural Sciences and Technology Innovation Center, Wuhan 430070, China
- Correspondence: (J.P.); (H.W.)
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Sen S, Mansell TJ. Yeasts as probiotics: Mechanisms, outcomes, and future potential. Fungal Genet Biol 2020; 137:103333. [PMID: 31923554 DOI: 10.1016/j.fgb.2020.103333] [Citation(s) in RCA: 59] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2019] [Revised: 10/18/2019] [Accepted: 01/04/2020] [Indexed: 02/07/2023]
Abstract
The presence of commensal fungal species in the human gut indicates that organisms from this kingdom have the potential to benefit the host as well. Saccharomyces boulardii, a yeast strain isolated about a hundred years ago, is the most well-characterized probiotic yeast. Though for the most part it genetically resembles Saccharomyces cerevisiae, specific phenotypic differences make it better suited for the gut microenvironment such as better acid and heat tolerance. Several studies using animal hosts suggest that S. boulardii can be used as a biotherapeutic in humans. Clinical trials indicate that it can alleviate symptoms from gastrointestinal (GI) tract infections to some extent, but further trials are needed to understand the full therapeutic potential of S. boulardii. Improvement on probiotic function using engineered yeast is an attractive future direction, though genome modification tools for use in S. boulardii have been limited until recently. However, some tools available for S. cerevisiae should be applicable for S. boulardii as well. In this review, we summarize the observed probiotic effect of this yeast and the state of the art for genome engineering tools that could help enhance its probiotic properties.
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Affiliation(s)
- Swastik Sen
- Interdepartmental Graduate Microbiology Program, Iowa State University, 4122A, BRL, 617 Bissel Rd, Ames, IA 50011, USA.
| | - Thomas J Mansell
- Interdepartmental Graduate Microbiology Program, Iowa State University, 4122A, BRL, 617 Bissel Rd, Ames, IA 50011, USA; Department of Chemical and Biological Engineering, Iowa State University, 2112 Sweeney Hall, 618 Bissel Rd, Ames, IA 50011, USA.
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Kumar R, Kumar P. Yeast-based vaccines: New perspective in vaccine development and application. FEMS Yeast Res 2019; 19:5298404. [PMID: 30668686 DOI: 10.1093/femsyr/foz007] [Citation(s) in RCA: 73] [Impact Index Per Article: 14.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2018] [Accepted: 01/18/2019] [Indexed: 12/11/2022] Open
Abstract
In presently licensed vaccines, killed or attenuated organisms act as a source of immunogens except for peptide-based vaccines. These conventional vaccines required a mass culture of associated or related organisms and long incubation periods. Special requirements during storage and transportation further adds to the cost of vaccine preparations. Availability of complete genome sequence, well-established genetic, inherent natural adjuvant and non-pathogenic nature of yeast species viz. Saccharomyces cerevisiae, Pichia pastoris makes them an ideal model system for the development of vaccines both for public health and for on-farm consumption. In this review, we compile the work in this emerging field during last two decades with major emphases on S. cerevisiae and P. pastoris which are routinely used worldwide for expression of heterologous proteins with therapeutic value against infectious diseases along with possible use in cancer therapy. We also pointed towards the developments in use of whole recombinant yeast, yeast surface display and virus-like particles as a novel strategy in the fight against infectious diseases and cancer along with other aspects including suitability of yeast in vaccines preparations, yeast cell wall component as an immune stimulator or modulator and present status of yeast-based vaccines in clinical trials.
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Affiliation(s)
- Ravinder Kumar
- Section of Molecular Biology, Division of Biological Sciences, University of California San Diego, 9500 Gilman Drive, La Jolla, CA 92093, USA
| | - Piyush Kumar
- Department of Biosciences and Bioengineering, Indian Institute of Technology Bombay, Powai, Mumbai 400 076, Maharashtra, India
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Review: Are there indigenous Saccharomyces in the digestive tract of livestock animal species? Implications for health, nutrition and productivity traits. Animal 2019; 14:22-30. [PMID: 31303186 DOI: 10.1017/s1751731119001599] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
All livestock animal species harbour complex microbial communities throughout their digestive tract that support vital biochemical processes, thus sustaining health and productivity. In part as a consequence of the strong and ancient alliance between the host and its associated microbes, the gut microbiota is also closely related to productivity traits such as feed efficiency. This phenomenon can help researchers and producers develop new and more effective microbiome-based interventions using probiotics, also known as direct-fed microbials (DFMs), in Animal Science. Here, we focus on one type of such beneficial microorganisms, the yeast Saccharomyces. Saccharomyces is one of the most widely used microorganisms as a DFM in livestock operations. Numerous studies have investigated the effects of dietary supplementation with different species, strains and doses of Saccharomyces (mostly Saccharomyces cerevisiae) on gut microbial ecology, health, nutrition and productivity traits of several livestock species. However, the possible existence of Saccharomyces which are indigenous to the animals' digestive tract has received little attention and has never been the subject of a review. We for the first time provide a comprehensive review, with the objective of shedding light into the possible existence of indigenous Saccharomyces of the digestive tract of livestock. Saccharomyces cerevisiae is a nomadic yeast able to survive in a broad range of environments including soil, grass and silages. Therefore, it is very likely that cattle and other animals have been in direct contact with this and other types of Saccharomyces throughout their entire existence. However, to date, the majority of animal scientists seem to agree that the presence of Saccharomyces in any section of the gut only reflects dietary contamination; in other words, these are foreign organisms that are only transiently present in the gut. Importantly, this belief (i.e. that Saccharomyces come solely from the diet) is often not well grounded and does not necessarily hold for all the many other groups of microbes in the gut. In addition to summarizing the current body of literature involving Saccharomyces in the digestive tract, we discuss whether the beneficial effects associated with the consumption of Saccharomyces may be related to its foreign origin, though this concept may not necessarily satisfy the theories that have been proposed to explain probiotic efficacy in vivo. This novel review may prove useful for biomedical scientists and others wishing to improve health and productivity using Saccharomyces and other beneficial microorganisms.
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Gut AM, Vasiljevic T, Yeager T, Donkor ON. Characterization of yeasts isolated from traditional kefir grains for potential probiotic properties. J Funct Foods 2019. [DOI: 10.1016/j.jff.2019.04.046] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
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Saccharomyces boulardii inhibits the expression of pro-inflammatory cytokines and inducible nitric oxide synthase genes in the colonic mucosa of rats experimentally-infected with Blastocystis subtype-3 cysts. Parasitology 2019; 146:1532-1540. [PMID: 31109390 DOI: 10.1017/s0031182019000696] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Blastocystis spp. is the most frequent infectious unicellular, luminal parasite in all species of animals and humans. It has been linked to diarrhoea and irritable bowel syndrome. Saccharomyces boulardii (Sb) is a widely used probiotic that previously showed efficacy against several intestinal pathogens. The aim of this study was to investigate the therapeutic role of Sb on Blastocystis spp. Methods: Five groups of Blastocystis subtype-3 infected rats were treated with either live Sb alone, metronidazole (MTZ) alone, Sb extract, both Sb and MTZ, or placebo-treated besides the noninfected control group. Assessment of treatment effectiveness was done by study of parasitological cure rate, histopathological effect and analysis of the colonic mucosal level of mRNAs expressions for the proinflammatory cytokines interleukin-6 (IL-6), IL-8, tumour necrosis factor alpha (TNF-α) and Inducible nitric oxide synthase (iNOS) by real-time reverse transcription-polymerase chain reaction (real-time RT-PCR). Results showed that live Sb significantly improved the histological characteristics and decreased the cytokines and iNOS in the colonic mucosa. Co-administration of live Sb together with MTZ gave a better effect than other treatments and had early efficacy and revealed a 100% reduction of the parasite stages from both the stool and intestinal wash fluid.
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Kumar R. Investigating the long-term stability of protein immunogen(s) for whole recombinant yeast-based vaccines. FEMS Yeast Res 2019; 18:5049006. [PMID: 29982546 DOI: 10.1093/femsyr/foy071] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2018] [Accepted: 06/30/2018] [Indexed: 12/13/2022] Open
Abstract
Even today vaccine(s) remains a mainstay in combating infectious diseases. Many yeast-based vaccines are currently in different phases of clinical trials. Despite the encouraging results of whole recombinant yeast and yeast display, the systematic study assessing the long-term stability of protein antigen(s) in yeast cells is still missing. Therefore, in the present study, I investigate the stability of heterologous protein antigen in the cellular environment of Saccharomyces cerevisiae through Escherichia coli surface protein (major curlin or CsgA). Present biochemical data showed that the stationary-phase yeast cells were able to keep the antigen stable for almost 1 year when stored at 2°C-8°C and 23°C-25°C. Further, iTRAQ-based quantitative proteomics of yeast whole cell lysate showed that the level of heterologous fusion protein was low in cells stored at 23°C-25°C compared to those at 2°C-8°C. In the end, I also proposed a workable strategy to test the integrity or completeness of heterologous protein in the yeast cell. I believe that the observations made in the present study will be really encouraging for those interested in the development of a whole recombinant yeast-based vaccine(s).
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Affiliation(s)
- Ravinder Kumar
- Section of Molecular Biology, Division of Biological Sciences, University of California San Diego, 9500 Gilman Drive, La Jolla, San Diego, CA 92093, USA
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Azhar MA, Abdul Munaim MS. Identification and Evaluation of Probiotic Potential in Yeast Strains Found in Kefir Drink Samples from Malaysia. INTERNATIONAL JOURNAL OF FOOD ENGINEERING 2019. [DOI: 10.1515/ijfe-2018-0347] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Abstract
Kefir drink is a source of probiotic microorganism with remarkable functional and technological properties. The objective of this work is to isolate yeast strains from Malaysian kefir drink and evaluate them for probiotic potentials. In the present study, nine strains of probiotic yeast were isolated from a Malaysian kefir drink and identified according to their 16S rDNA sequences. Furthermore, their probiotic potential was evaluated. The probiotic properties were tested for aspects of antibiotic susceptibility, antimicrobial activity, and gastrointestinal condition tolerance (pH and temperature). Five isolated strains, M3, Y5, Y9, Y11 and A1, showed good tolerance towards low pH condition while three strains, A1, M1, and M3, showed antimicrobial activity against E. coli, P. aeruginosa, and Salmonella sp. Most isolates were resistant to penicillin, streptomycin, and ampicillin, and grew well at human body temperature. The result of this test indicates that the yeast strains isolated from Malaysian kefir drink have excellent potential for use as probiotics in various products. Lastly, kefir milk is one of the excellent source of probiotic yeast strains and could be used as a new yeast probiotic formulation or in food supplements.
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Affiliation(s)
- Mohd Akmal Azhar
- Faculty of Engineering Technology , Universiti Malaysia Pahang , Kuantan , Pahang 26300 , Malaysia
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de Melo Pereira GV, de Oliveira Coelho B, Magalhães Júnior AI, Thomaz-Soccol V, Soccol CR. How to select a probiotic? A review and update of methods and criteria. Biotechnol Adv 2018; 36:2060-2076. [PMID: 30266342 DOI: 10.1016/j.biotechadv.2018.09.003] [Citation(s) in RCA: 221] [Impact Index Per Article: 36.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2018] [Revised: 09/18/2018] [Accepted: 09/24/2018] [Indexed: 02/07/2023]
Abstract
International competition within the dairy market and increasing public awareness about the importance of functional food consumption are providing new challenges for innovation in the probiotic sector. In this context, countless references are currently dedicated to the selection and characterization of new species and more specific strains of probiotic bacteria. In general, these studies adopt basic selection criteria established by the World Health Organization (WHO), including host-associated stress resistance, epithelium adhesion ability, and antimicrobial activity. These aspects are applied to ensure that the candidate probiotic could withstand the stressful conditions of the human digestive system and exert functional proprieties. However, it cannot be assumed that these novel microbial strains are capable of offering several biological benefits attributed to probiotics. Additionally, safety-associated selection criteria, such as plasmid-associated antibiotic resistance spreading and enterotoxin production, are often neglected. This article reviews the recent developments in the processes, strategies, and methods, such as anticarcinogenic, antidepression, antianxiety, antiobesity, antidiabetic, immunostimulatory, and cholesterol-lowering assessments, to select probiotic strains with the ultimate objective of assisting future probiotic microbe evaluation studies.
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Affiliation(s)
| | - Bruna de Oliveira Coelho
- Bioprocess Engineering and Biotechnology Department, Federal University of Paraná (UFPR), Curitiba, PR, Brazil
| | | | - Vanete Thomaz-Soccol
- Bioprocess Engineering and Biotechnology Department, Federal University of Paraná (UFPR), Curitiba, PR, Brazil
| | - Carlos Ricardo Soccol
- Bioprocess Engineering and Biotechnology Department, Federal University of Paraná (UFPR), Curitiba, PR, Brazil.
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Gut AM, Vasiljevic T, Yeager T, Donkor ON. Salmonella infection - prevention and treatment by antibiotics and probiotic yeasts: a review. MICROBIOLOGY-SGM 2018; 164:1327-1344. [PMID: 30136920 DOI: 10.1099/mic.0.000709] [Citation(s) in RCA: 99] [Impact Index Per Article: 16.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Global Salmonella infection, especially in developing countries, is a health and economic burden. The use of antibiotic drugs in treating the infection is proving less effective due to the alarming rise of antibiotic-resistant strains of Salmonella, the effects of antibiotics on normal gut microflora and antibiotic-associated diarrhoea, all of which bring a growing need for alternative treatments, including the use of probiotic micro-organisms. However, there are issues with probiotics, including their potential to be opportunistic pathogens and antibiotic-resistant carriers, and their antibiotic susceptibility if used as complementary therapy. Clinical trials, animal trials and in vitro investigations into the prophylactic and therapeutic efficacies of probiotics have demonstrated antagonistic properties against Salmonella and other enteropathogenic bacteria. Nonetheless, there is a need for further studies into the potential mechanisms, efficacy and mode of delivery of yeast probiotics in Salmonella infections. This review discusses Salmonella infections and treatment using antibiotics and probiotics.
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Affiliation(s)
- Abraham Majak Gut
- 1Institute for Sustainable Industries and Livable Cities, College of Health and Biomedicine, Victoria University, Werribee Campus, PO Box 14428, Melbourne, Victoria 8001, Australia
| | - Todor Vasiljevic
- 1Institute for Sustainable Industries and Livable Cities, College of Health and Biomedicine, Victoria University, Werribee Campus, PO Box 14428, Melbourne, Victoria 8001, Australia
| | - Thomas Yeager
- 2Institute for Sustainable Industries and Livable Cities, College of Engineering and Science, Victoria University, Werribee Campus, PO Box 14428, Melbourne, Victoria 8001, Australia
| | - Osaana N Donkor
- 1Institute for Sustainable Industries and Livable Cities, College of Health and Biomedicine, Victoria University, Werribee Campus, PO Box 14428, Melbourne, Victoria 8001, Australia
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Lazo-Vélez MA, Serna-Saldívar SO, Rosales-Medina MF, Tinoco-Alvear M, Briones-García M. Application of Saccharomyces cerevisiae var. boulardii in food processing: a review. J Appl Microbiol 2018; 125:943-951. [PMID: 29961970 DOI: 10.1111/jam.14037] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2017] [Revised: 06/09/2018] [Accepted: 06/20/2018] [Indexed: 12/18/2022]
Abstract
Probiotics are increasingly being added to food in order to develop products with health-promoting properties. Particularly, Saccharomyces cereviceae var. boulardii yeast is recently being investigated like a starting-culture for development of functional and probiotic foods. Although the literature is abundant on the beneficial effects of S. boulardii on health, slight information is available on the effects of supplementing this probiotic to food systems. The aim of this paper is to examine the applications of S. boulardii to different food matrices and its implication in food processing (stability, sensorial properties and other technological implications) and the concomitant effects on nutrition and health.
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Affiliation(s)
- M A Lazo-Vélez
- Universidad del Azuay, Grupos Estratégicos de Investigación de la Carrera de Alimentos (GEICA-UDA), Cuenca, Ecuador
| | - S O Serna-Saldívar
- Tecnológico de Monterrey, Centro de Biotecnología FEMSA, Escuela de Ingeniería y Ciencias, Monterrey, México
| | - M F Rosales-Medina
- Universidad del Azuay, Grupos Estratégicos de Investigación de la Carrera de Alimentos (GEICA-UDA), Cuenca, Ecuador
| | - M Tinoco-Alvear
- Universidad del Azuay, Grupos Estratégicos de Investigación de la Carrera de Alimentos (GEICA-UDA), Cuenca, Ecuador
| | - M Briones-García
- Universidad del Azuay, Grupos Estratégicos de Investigación de la Carrera de Alimentos (GEICA-UDA), Cuenca, Ecuador
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Statistical modelling for optimized lyophilization of Lactobacillus acidophilus strains for improved viability and stability using response surface methodology. AMB Express 2018; 8:129. [PMID: 30097787 PMCID: PMC6086920 DOI: 10.1186/s13568-018-0659-3] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2018] [Accepted: 08/02/2018] [Indexed: 12/04/2022] Open
Abstract
The awareness regarding use of probiotics for health benefits has created a huge market worldwide. The use of probiotic cultures and its success in commercial scale is relying on the techniques employed to ensure that the potential cultures with desired functional activity are stable and viable for longer period. The present study was undertaken to statistically evaluate the effect of lyoprotectant in the suspension media containing sucrose and reconstituted skim milk on the viability of Lactobacillus acidophilus strains. The central composite rotatable design of response surface methodology was used in evaluating the survival rate and viability even after 24 months’ storage of three different lyophilized strains of L. acidophilus. We also determined the exclusive use of lyoprotectant on the survival of the lyophilized strains throughout the study period without altering any of the culture conditions. The most conspicuous result to emerge from the data is that the suspension medium composed of minimal amount of sucrose (~ 1.2%) in the reconstituted skim milk (6%) was evident in maintaining a higher survival rate of lyophilized culture during 2-year storage. From this investigation, the optimized suspension media used to obtain the lyophilized concentrate of L. acidophilus could be recommended in designing dietary supplement with minimal modification for industrial application. This might reduce the manufacturing cost as well as storage loss occurring both in pharma and food sector.
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A Mutation in PGM2 Causing Inefficient Galactose Metabolism in the Probiotic Yeast Saccharomyces boulardii. Appl Environ Microbiol 2018. [PMID: 29523547 DOI: 10.1128/aem.02858-17] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
The probiotic yeast Saccharomyces boulardii has been extensively studied for the prevention and treatment of diarrheal diseases, and it is now commercially available in some countries. S. boulardii displays notable phenotypic characteristics, such as a high optimal growth temperature, high tolerance against acidic conditions, and the inability to form ascospores, which differentiate S. boulardii from Saccharomyces cerevisiae The majority of prior studies stated that S. boulardii exhibits sluggish or halted galactose utilization. Nonetheless, the molecular mechanisms underlying inefficient galactose uptake have yet to be elucidated. When the galactose utilization of a widely used S. boulardii strain, ATCC MYA-796, was examined under various culture conditions, the S. boulardii strain could consume galactose, but at a much lower rate than that of S. cerevisiae While all GAL genes were present in the S. boulardii genome, according to analysis of genomic sequencing data in a previous study, a point mutation (G1278A) in PGM2, which codes for phosphoglucomutase, was identified in the genome of the S. boulardii strain. As the point mutation resulted in the truncation of the Pgm2 protein, which is known to play a pivotal role in galactose utilization, we hypothesized that the truncated Pgm2 might be associated with inefficient galactose metabolism. Indeed, complementation of S. cerevisiaePGM2 in S. boulardii restored galactose utilization. After reverting the point mutation to a full-length PGM2 in S. boulardii by Cas9-based genome editing, the growth rates of wild-type (with a truncated PGM2 gene) and mutant (with a full-length PGM2) strains with glucose or galactose as the carbon source were examined. As expected, the mutant (with a full-length PGM2) was able to ferment galactose faster than the wild-type strain. Interestingly, the mutant showed a lower growth rate than that of the wild-type strain on glucose at 37°C. Also, the wild-type strain was enriched in the mixed culture of wild-type and mutant strains on glucose at 37°C, suggesting that the truncated PGM2 might offer better growth on glucose at a higher temperature in return for inefficient galactose utilization. Our results suggest that the point mutation in PGM2 might be involved in multiple phenotypes with different effects.IMPORTANCESaccharomyces boulardii is a probiotic yeast strain capable of preventing and treating diarrheal diseases. However, the genetics and metabolism of this yeast are largely unexplored. In particular, molecular mechanisms underlying the inefficient galactose metabolism of S. boulardii remain unknown. Our study reports that a point mutation in PGM2, which codes for phosphoglucomutase, is responsible for inferior galactose utilization by S. boulardii After correction of the mutated PGM2 via genome editing, the resulting strain was able to use galactose faster than a parental strain. While the PGM2 mutation made the yeast use galactose slowly, investigation of the genomic sequencing data of other S. boulardii strains revealed that the PGM2 mutation is evolutionarily conserved. Interestingly, the PGM2 mutation was beneficial for growth at a higher temperature on glucose. We speculate that the PGM2 mutation was enriched due to selection of S. boulardii in the natural habitat (sugar-rich fruits in tropical areas).
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Bagherpour G, Ghasemi H, Zand B, Zarei N, Roohvand F, Ardakani EM, Azizi M, Khalaj V. Oral Administration of Recombinant Saccharomyces boulardii Expressing Ovalbumin-CPE Fusion Protein Induces Antibody Response in Mice. Front Microbiol 2018; 9:723. [PMID: 29706942 PMCID: PMC5908956 DOI: 10.3389/fmicb.2018.00723] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2018] [Accepted: 03/27/2018] [Indexed: 12/22/2022] Open
Abstract
Saccharomyces boulardii, a subspecies of Saccharomyces cerevisiae, is a well-known eukaryotic probiotic with many benefits for human health. In the present study, a recombinant strain of S. boulardii was prepared to use as a potential oral vaccine delivery vehicle. In this sense, a ura3 auxotroph strain of S. boulardii CNCM I-745 (known as S. cerevisiae HANSEN CBS 5926, Yomogi®) was generated using CRISPR/Cas9 methodology. Then a gene construct encoding a highly immunogenic protein, ovalbumin (OVA), was prepared and transformed into the ura3- S. boulardii. To facilitate the transport of the recombinant immunogen across the intestinal barrier, a claudin-targeting sequence from Clostridium perfringens enterotoxin (CPE) was added to the C-terminus of the expression cassette. The recombinant S. boulardii strain expressing the OVA-CPE fusion protein was then administered orally to a group of mice, and serum IgG and fecal IgA levels were evaluated by ELISA. Our results demonstrated that anti-OVA IgG in serum significantly increased in test group (P < 0.001) compared to control groups (receiving wild type S. boulardii or PBS), and the fecal IgA titer was significantly higher in test group (P < 0.05) than control groups. In parallel, a recombinant S. boulardii strain expressing the similar construct lacking C-terminal CPE was also administered orally. The result showed an increased level of serum IgG in group receiving yeasts expressing the CPE negative construct compared to control groups; however, the fecal IgA levels did not increase significantly. In conclusion, our findings indicated that the yeast S. boulardii, as a delivery vehicle with possible immunomodulatory effects, and c-CPE, as a targeting tag, synergistically assist to stimulate systemic and local immunity. This proposed recombinant S. boulardii system might be useful in the expression of other antigenic peptides, making it as a promising tool for oral delivery of vaccines or therapeutic proteins.
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Affiliation(s)
- Ghasem Bagherpour
- Department of Medical Biotechnology, Pasteur Institute of Iran, Tehran, Iran
| | - Hosnie Ghasemi
- Department of Medical Biotechnology, Pasteur Institute of Iran, Tehran, Iran
| | - Bahare Zand
- Department of Medical Biotechnology, Pasteur Institute of Iran, Tehran, Iran
| | - Najmeh Zarei
- Department of Medical Biotechnology, Pasteur Institute of Iran, Tehran, Iran
| | - Farzin Roohvand
- Department of Virology, Pasteur Institute of Iran, Tehran, Iran
| | - Esmat M Ardakani
- Department of Molecular Medicine, Pasteur Institute of Iran, Tehran, Iran
| | - Mohammad Azizi
- Department of Medical Biotechnology, Pasteur Institute of Iran, Tehran, Iran
| | - Vahid Khalaj
- Department of Medical Biotechnology, Pasteur Institute of Iran, Tehran, Iran
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Moré MI, Vandenplas Y. Saccharomyces boulardii CNCM I-745 Improves Intestinal Enzyme Function: A Trophic Effects Review. CLINICAL MEDICINE INSIGHTS. GASTROENTEROLOGY 2018; 11:1179552217752679. [PMID: 29449779 PMCID: PMC5808955 DOI: 10.1177/1179552217752679] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/12/2017] [Accepted: 12/17/2017] [Indexed: 12/15/2022]
Abstract
Several properties of the probiotic medicinal yeast Saccharomyces boulardii CNCM I-745 contribute to its efficacy to prevent or treat diarrhoea. Besides immunologic effects, pathogen-binding and anti-toxin effects, as well as positive effects on the microbiota, S boulardii CNCM I-745 also has pronounced effects on digestive enzymes of the brush border membrane, known as trophic effects. The latter are the focus of this review. Literature has been reviewed after searching Medline and PMC databases. All relevant non-clinical and clinical studies are summarized. S. boulardii CNCM I-745 synthesizes and secretes polyamines, which have a role in cell proliferation and differentiation. The administration of polyamines or S. boulardii CNCM I-745 enhances the expression of intestinal digestive enzymes as well as nutrient uptake transporters. The signalling mechanisms leading to enzyme activation are not fully understood. However, polyamines have direct nucleic acid–binding capacity with regulatory impact. S. boulardii CNCM I-745 induces signalling via the mitogen-activated protein kinase pathway. In addition, effects on the phosphatidylinositol-3 kinase (PI3K) pathway have been reported. As an additional direct effect, S. boulardii CNCM I-745 secretes certain enzymes, which enhance nutrient acquisition for the yeast and the host. The increased availability of digestive enzymes seems to be one of the mechanisms by which S. boulardii CNCM I-745 counteracts diarrhoea; however, also people with certain enzyme deficiencies may profit from its administration. More studies are needed to fully understand the mechanisms of trophic activation by the probiotic yeast.
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Affiliation(s)
- Margret I Moré
- analyze & realize GmbH, Department of Consulting and Strategic Innovation, Berlin, Germany
| | - Yvan Vandenplas
- Department of Pediatrics, Vrije Universiteit Brussel, Brussels, Belgium
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Campbell C, Nanjundaswamy AK, Njiti V, Xia Q, Chukwuma F. Value-added probiotic development by high-solid fermentation of sweet potato with Saccharomyces boulardii. Food Sci Nutr 2017; 5:633-638. [PMID: 28572951 PMCID: PMC5448380 DOI: 10.1002/fsn3.441] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2016] [Revised: 09/25/2016] [Accepted: 10/02/2016] [Indexed: 12/30/2022] Open
Abstract
Controlled fermentation of Sweet potato (Ipomoea batatas) var. Beauregard by yeast, Saccharomyces boulardii (MAY 796) to enhance the nutritional value of sweet potato was investigated. An average 8.00 × 1010 Colony Forming Units (CFU)/g of viable cells were obtained over 5‐day high‐solid fermentation. Yeast cell viability did not change significantly over time at 4°C whereas the number of viable yeast cells reduced significantly at room temperature (25°C), which was approximately 40% in 12 months. Overall, the controlled fermentation of sweet potato by MAY 796 enhanced protein, crude fiber, neutral detergent fiber, acid detergent fiber, amino acid, and fatty acid levels. Development of value‐added sweet potato has a great potential in animal feed and human nutrition. S. boulardii‐ fermented sweet potato has great potential as probiotic‐enriched animal feed and/or functional food for human nutrition.
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Affiliation(s)
- Carmen Campbell
- Department of Agriculture School of Agriculture, Research, Extension and Applied Sciences Alcorn State University Lorman MS USA
| | - Ananda K Nanjundaswamy
- Department of Agriculture School of Agriculture, Research, Extension and Applied Sciences Alcorn State University Lorman MS USA
| | - Victor Njiti
- Department of Agriculture School of Agriculture, Research, Extension and Applied Sciences Alcorn State University Lorman MS USA
| | - Qun Xia
- Department of Agriculture School of Agriculture, Research, Extension and Applied Sciences Alcorn State University Lorman MS USA
| | - Franklin Chukwuma
- Department of Agriculture School of Agriculture, Research, Extension and Applied Sciences Alcorn State University Lorman MS USA
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Datta S, Annapure US, Timson DJ. Different specificities of two aldehyde dehydrogenases from Saccharomyces cerevisiae var. boulardii. Biosci Rep 2017; 37:BSR20160529. [PMID: 28126723 PMCID: PMC5483954 DOI: 10.1042/bsr20160529] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2016] [Revised: 01/24/2017] [Accepted: 01/26/2017] [Indexed: 12/21/2022] Open
Abstract
Aldehyde dehydrogenases play crucial roles in the detoxification of exogenous and endogenous aldehydes by catalysing their oxidation to carboxylic acid counterparts. The present study reports characterization of two such isoenzymes from the yeast Saccharomyces cerevisiae var. boulardii (NCYC 3264), one mitochondrial (Ald4p) and one cytosolic (Ald6p). Both Ald4p and Ald6p were oligomeric in solution and demonstrated positive kinetic cooperativity towards aldehyde substrates. Wild-type Ald6p showed activity only with aliphatic aldehydes. Ald4p, on the contrary, showed activity with benzaldehyde along with a limited range of aliphatic aldehydes. Inspection of modelled structure of Ald6p revealed that a bulky amino acid residue (Met177, compared with the equivalent residue Leu196 in Ald4p) might cause steric hindrance of cyclic substrates. Therefore, we hypothesized that specificities of the two isoenzymes towards aldehyde substrates were partly driven by steric hindrance in the active site. A variant of wild-type Ald6p with the Met177 residue replaced by a valine was also characterized to address to the hypothesis. It showed an increased specificity range and a gain of activity towards cyclohexanecarboxaldehyde. It also demonstrated an increased thermal stability when compared with both the wild-types. These data suggest that steric bulk in the active site of yeast aldehyde dehydrogenases is partially responsible for controlling specificity.
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Affiliation(s)
- Suprama Datta
- Department of Food Engineering and Technology, Institute of Chemical Technology (ICT), Matunga, Mumbai 400 019, India
- School of Biological Sciences, Queen's University Belfast, Medical Biology Centre, 97 Lisburn Road, Belfast BT9 7BL, U.K
| | - Uday S Annapure
- Department of Food Engineering and Technology, Institute of Chemical Technology (ICT), Matunga, Mumbai 400 019, India
| | - David J Timson
- School of Biological Sciences, Queen's University Belfast, Medical Biology Centre, 97 Lisburn Road, Belfast BT9 7BL, U.K.
- School of Pharmacy and Biomolecular Sciences, University of Brighton, Huxley Building, Lewes Road, Brighton BN2 4GJ, U.K
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Effects of a Novel Dietary Supplement on Indices of Muscle Injury and Articular GAG Release in Horses. J Equine Vet Sci 2017. [DOI: 10.1016/j.jevs.2016.08.016] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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