1
|
Derebasi BN, Davran Bulut S, Aksoy Erden B, Sadeghian N, Taslimi P, Celebioglu HU. Effects of p-coumaric acid on probiotic properties of Lactobacillus acidophilus LA-5 and lacticaseibacillus rhamnosus GG. Arch Microbiol 2024; 206:223. [PMID: 38642150 DOI: 10.1007/s00203-024-03957-x] [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: 02/16/2024] [Accepted: 04/09/2024] [Indexed: 04/22/2024]
Abstract
Probiotics are defined as "live microorganisms that provide health benefits to the host when administered in adequate amounts." Probiotics have beneficial effects on human health, including antibacterial activity against intestinal pathogens, regulation of blood cholesterol levels, reduction of colitis and inflammation incidence, regulation of the immune system, and prevention of colon cancer. In addition to probiotic bacteria, some phenolic compounds found in foods we consume (both food and beverages) have positive effects on human health. p-coumaric acid (p-CA) is one of the most abundant phenolic compounds in nature and human diet. The interactions between these two different food components (phenolics and probiotics), resulting in more beneficial combinations called synbiotics, are not well understood in terms of how they will affect the gut microbiota by promoting the probiotic properties and growth of probiotic bacteria. Thus, this study aimed to investigate synbiotic relationship between p-CA and Lactobacillus acidophilus LA-5 (LA-5), Lacticaseibacillus rhamnosus GG (LGG). Probiotic bacteria were grown in the presence of p-CA at different concentrations, and the effects of p-CA on probiotic properties, as well as its in vitro effects on AChE and BChE activities, were investigated. Additionally, Surface analysis was conducted using FTIR. The results showed that treatment with p-CA at different concentrations did not exhibit any inhibitory effect on the growth kinetics of LA-5 and LGG probiotic bacteria. Additionally, both probiotic bacteria demonstrated high levels of antibacterial properties. It showed that it increased the auto-aggregation of both probiotics. While p-CA increased co-aggregation of LA-5 and LGG against Escherichia coli, it decreased co-aggregation against Staphylococcus aureus. Probiotics grown with p-CA were more resistant to pepsin. While p-CA increased the resistance of LA-5 to bile salt, it decreased the resistance of LGG. The combinations of bacteria and p-CA efficiently suppressed AChE and BChE with inhibition (%) 11.04-68.43 and 13.20-65.72, respectively. Furthermore, surface analysis was conducted using FTIR to investigate the interaction of p-coumaric acid with LA-5 and LGG, and changes in cell components on the bacterial surface were analyzed. The results, recorded in range of 4000 -600 cm-1 with resolution of 4 cm-1, demonstrated that p-CA significantly affected only the phosphate/CH ratio for both bacteria. These results indicate the addition of p-CA to the probiotic growth may enhance the probiotic properties of bacteria.
Collapse
Affiliation(s)
- Buse Nur Derebasi
- Department of Biotechnology, Faculty of Science, Bartin University, Bartin, Turkey
| | - Sena Davran Bulut
- Department of Biotechnology, Faculty of Science, Bartin University, Bartin, Turkey
| | - Busra Aksoy Erden
- Central Research Laboratory Application and Research Center, Bartin University, Bartin, Turkey
| | - Nastaran Sadeghian
- Department of Biotechnology, Faculty of Science, Bartin University, Bartin, Turkey
| | - Parham Taslimi
- Department of Biotechnology, Faculty of Science, Bartin University, Bartin, Turkey
| | | |
Collapse
|
2
|
Ye Q, Lao L, Zhang A, Qin Y, Zong M, Pan D, Yang H, Wu Z. Multifunctional properties of the transmembrane LPxTG-motif protein derived from Limosilactobacillus reuteri SH-23. J Dairy Sci 2023; 106:8207-8220. [PMID: 37641365 DOI: 10.3168/jds.2023-23440] [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: 03/02/2023] [Accepted: 05/16/2023] [Indexed: 08/31/2023]
Abstract
The LPxTG-motif protein is an important transmembrane protein with high hydrophilicity and stability, as evidenced by its stress tolerance and adhesion ability. In this study, a novel LPxTG-motif protein with esterase activity (LEP) was expressed, and the multifunctional properties such as adhesion properties and esterase activity were also investigated. When cocultured with Limosilactobacillus reuteri SH-23, the adhesion ability of L. reuteri SH-23 to HT-29 cells was improved, and this adhesion was further found relating to the potential target protein Pyruvate kinase M1/2 (PKM) of HT-29 cells. In addition, as a multifunctional protein, LEP can promote the hydrolysis of bovine milk lipids with its esterase activity, and the activity was enhanced in the presence of Zn2+ and Mn2+ at pH 7. Furthermore, the polyunsaturated fatty acids (PUFA) such as linoleic acid and eicosapentaenoic acid were found to increase during the hydrolyzing process. These unique properties of LEP provide a comprehensive understanding of the adhesion function and PUFA releasing properties of the multifunctional protein derived from L. reuteri SH-23 and shed light on the beneficial effect of this Lactobacillus strain on the colonization of the gastrointestinal tract.
Collapse
Affiliation(s)
- Qianwen Ye
- Key Laboratory of Animal Protein Deep Processing Technology of Zhejiang, School of Food and Pharmaceutical Sciences, Ningbo University, Ningbo 315211, Zhejiang, P. R. China
| | - Lifeng Lao
- Key Laboratory of Animal Protein Deep Processing Technology of Zhejiang, School of Food and Pharmaceutical Sciences, Ningbo University, Ningbo 315211, Zhejiang, P. R. China
| | - Ao Zhang
- Key Laboratory of Animal Protein Deep Processing Technology of Zhejiang, School of Food and Pharmaceutical Sciences, Ningbo University, Ningbo 315211, Zhejiang, P. R. China
| | - Yiman Qin
- Key Laboratory of Animal Protein Deep Processing Technology of Zhejiang, School of Food and Pharmaceutical Sciences, Ningbo University, Ningbo 315211, Zhejiang, P. R. China
| | - Manli Zong
- Key Laboratory of Animal Protein Deep Processing Technology of Zhejiang, School of Food and Pharmaceutical Sciences, Ningbo University, Ningbo 315211, Zhejiang, P. R. China
| | - Daodong Pan
- Key Laboratory of Animal Protein Deep Processing Technology of Zhejiang, School of Food and Pharmaceutical Sciences, Ningbo University, Ningbo 315211, Zhejiang, P. R. China
| | - Hua Yang
- College of Biological and Environmental Sciences, Zhejiang Wanli University, Ningbo 315211, Zhejiang, P. R. China.
| | - Zhen Wu
- Key Laboratory of Animal Protein Deep Processing Technology of Zhejiang, School of Food and Pharmaceutical Sciences, Ningbo University, Ningbo 315211, Zhejiang, P. R. China.
| |
Collapse
|
3
|
Choudhary R, Singh KS, Bisht S, Kumar S, Mohanty AK, Grover S, Kaushik JK. Host-microbe interaction and pathogen exclusion mediated by an aggregation-prone surface layer protein of Lactobacillus helveticus. Int J Biol Macromol 2023:125146. [PMID: 37271267 DOI: 10.1016/j.ijbiomac.2023.125146] [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: 03/02/2023] [Revised: 05/12/2023] [Accepted: 05/27/2023] [Indexed: 06/06/2023]
Abstract
Probiotic surface layer proteins (Slps) have multiple functions and bacterial adhesion to host cells is one of them. The precise role of Slps in cellular adhesion is not well understood due to its low native protein yield and self-aggregative nature. Here, we report the recombinant expression and purification of biologically active Slp of Lactobacillus helveticus NCDC 288 (SlpH) in high yield. SlpH is a highly basic protein (pI = 9.4), having a molecular weight of 45 kDa. Circular Dichroism showed a prevalence of beta-strands in SlpH structure and resistance to low pH. SlpH showed binding to human intestinal tissue, enteric Caco-2 cell line, and porcine gastric mucin, but not with fibronectin, collagen type IV and laminin. SlpH inhibited the binding of the enterotoxigenic E. coli by 70 % and 76 % and that of Salmonella Typhimurium SL1344 by 71 % and 75 % to enteric Caco-2 cell line in the exclusion and competition assays, respectively. The pathogen exclusion and competition activity and tolerance to harsh gastrointestinal conditions show the potential for developing SlpH as a prophylactic or therapeutic agent against enteric pathogens.
Collapse
Affiliation(s)
- Ritu Choudhary
- Animal Biotechnology Centre, ICAR-National Dairy Research Institute, Karnal 132001, (India)
| | - Kumar Siddharth Singh
- Animal Biotechnology Centre, ICAR-National Dairy Research Institute, Karnal 132001, (India)
| | - Sonu Bisht
- Animal Biotechnology Centre, ICAR-National Dairy Research Institute, Karnal 132001, (India)
| | - Sudarshan Kumar
- Animal Biotechnology Centre, ICAR-National Dairy Research Institute, Karnal 132001, (India)
| | - Ashok Kumar Mohanty
- Animal Biotechnology Centre, ICAR-National Dairy Research Institute, Karnal 132001, (India)
| | - Sunita Grover
- Dairy Microbiology Division, ICAR-National Dairy Research Institute, Karnal 132001, (India)
| | - Jai Kumar Kaushik
- Animal Biotechnology Centre, ICAR-National Dairy Research Institute, Karnal 132001, (India).
| |
Collapse
|
4
|
Thakker DP, Narayanan R. Arginine deiminase produced by lactic acid bacteria as a potent anti-cancer drug. Med Oncol 2023; 40:175. [PMID: 37171497 DOI: 10.1007/s12032-023-02043-4] [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: 01/22/2023] [Accepted: 04/30/2023] [Indexed: 05/13/2023]
Abstract
Bacterial-based cancer immunotherapy has recently gained widespread attention due to its exceptional mechanism of rich pathogen-associated molecular patterns in anti-cancer immune responses. Contrary to conventional cancer therapies such as surgery, chemotherapy, radiation and phototherapy, bacteria-based cancer immunotherapy has the unique ability to suppress cancer by selectively accumulating and growing in tumours. In the view of this, several bacterial strains are being used for the treatment of cancer. Of which, lactic acid bacteria are a powerful, albeit still inadequately understood bacteria that possess a wide source of bioactive chemicals. Lactic acid bacteria metabolites, such as bacteriocins, short-chain fatty acids, exopolysaccharides show antitumour property. Amino acid pathways, which have lately been focussed as a new strategy to cancer therapy, are key element of the adaptability and dysregulation of metabolic pathways identified in proliferation of tumour cells. Arginine metabolism, in particular, has been shown to be critical for cancer therapy. As a result, better understanding of arginine metabolism in LAB and cancer cells could lead to new cancer therapeutic targets. This review will outline current advances in the interaction of arginine metabolism with cancer therapy and propose an arginine deiminase expression system to combat cancer more effectively.
Collapse
Affiliation(s)
- Darshali P Thakker
- Department of Genetic Engineering, College of Engineering & Technology, SRM Institute of Science and Technology, SRM Nagar, Kattankulathur, 603203, Tamil Nadu, India
| | - Rajnish Narayanan
- Department of Genetic Engineering, College of Engineering & Technology, SRM Institute of Science and Technology, SRM Nagar, Kattankulathur, 603203, Tamil Nadu, India.
| |
Collapse
|
5
|
A novel strategy for designing the antioxidant and adhesive bifunctional protein using the Lactobacillus strain-derived LPxTG motif structure. Process Biochem 2023. [DOI: 10.1016/j.procbio.2023.01.019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
|
6
|
Lactobacillus buchneri S-layer protein-coated liposomes loaded with β-cyclodextrin–carvacrol inclusion complexes for the enhancement of antibacterial effect. Food Res Int 2022; 160:111623. [DOI: 10.1016/j.foodres.2022.111623] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2022] [Revised: 06/17/2022] [Accepted: 07/04/2022] [Indexed: 11/21/2022]
|
7
|
Weng L, Wu L, Guo R, Ye J, Liang W, Wu W, Chen L, Yang D. Lactobacillus cell envelope-coated nanoparticles for antibiotic delivery against cariogenic biofilm and dental caries. J Nanobiotechnology 2022; 20:356. [PMID: 35918726 PMCID: PMC9344742 DOI: 10.1186/s12951-022-01563-x] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2022] [Accepted: 07/20/2022] [Indexed: 12/31/2022] Open
Abstract
Background Due to their prevalence, dental caries ranks first among all diseases endangering human health. Therefore, the prevention of caries is of great significance, as caries have become a serious public health problem worldwide. Currently, using nanoscale drug delivery systems to prevent caries has received increased attention. However, the preventive efficacy of these systems is substantially limited due to the unique physiological structure of cariogenic biofilms. Thus, novel strategies aimed at combating cariogenic biofilms to improve preventive efficiency against caries are meaningful and very necessary. Herein, inspired by cell membrane coating technology and Lactobacillus strains, we coated triclosan (TCS)-loaded poly(lactic-co-glycolic acid) (PLGA) nanoparticles (TCS@PLGA-NPs) with an envelope of Lactobacillus (LA/TCS@PLGA-NPs) and investigated their potential as a nanoparticle delivery system against cariogenic biofilms and dental caries. Results LA/TCS@PLGA-NPs were successfully prepared with favorable properties, including a coated envelope, controllable size, negative charge, sustained drug-release kinetics and so on. The LA/TCS@PLGA-NPs inherited native properties from the source cell surface, thus the LA/TCS@PLGA-NPs adhered to S. mutans, integrated into the S. mutans biofilm, and interfered with the biofilm formation of S. mutans. The nanoparticles significantly inhibited the activity, biomass and virulence gene expression of S. mutans biofilms in vitro. Additionally, LA/TCS@PLGA-NPs exhibited a long-lasting inhibitory effect on the progression of caries in vivo. The safety performance of the nanoparticles is also favorable. Conclusions Our findings reveal that the antibiofilm effect of LA/TCS@PLGA-NPs relies not only on the inheritance of native properties from the Lactobacillus cell surface but also on the inhibitory effect on the activity, biomass and virulence of S. mutans biofilms. Thus, these nanoparticles could be considered feasible candidates for a new class of effective drug delivery systems for the prevention of caries. Furthermore, this work provides new insights into cell membrane coating technology and presents a novel strategy to combat bacterial biofilms and associated infections. Graphical Abstract ![]()
Supplementary Information The online version contains supplementary material available at 10.1186/s12951-022-01563-x.
Collapse
Affiliation(s)
- Luting Weng
- Stomatological Hospital of Chongqing Medical University, No. 426, Songshi North Road, Yubei District, Chongqing, 401147, China.,Chongqing Key Laboratory of Oral Diseases and Biomedical Sciences, Chongqing, 401147, China
| | - Lang Wu
- Stomatological Hospital of Chongqing Medical University, No. 426, Songshi North Road, Yubei District, Chongqing, 401147, China.,Chongqing Key Laboratory of Oral Diseases and Biomedical Sciences, Chongqing, 401147, China
| | - Rongjuan Guo
- Stomatological Hospital of Chongqing Medical University, No. 426, Songshi North Road, Yubei District, Chongqing, 401147, China.,Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education, Chongqing, 401147, China
| | - Jiajia Ye
- Stomatological Hospital of Chongqing Medical University, No. 426, Songshi North Road, Yubei District, Chongqing, 401147, China.,Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education, Chongqing, 401147, China
| | - Wen Liang
- Stomatological Hospital of Chongqing Medical University, No. 426, Songshi North Road, Yubei District, Chongqing, 401147, China.,Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education, Chongqing, 401147, China
| | - Wei Wu
- Bioengineering College of Chongqing University, No.174 Shazhengjie, Shapingba, Chongqing, 400044, China.
| | - Liang Chen
- Stomatological Hospital of Chongqing Medical University, No. 426, Songshi North Road, Yubei District, Chongqing, 401147, China.
| | - Deqin Yang
- Stomatological Hospital of Chongqing Medical University, No. 426, Songshi North Road, Yubei District, Chongqing, 401147, China.
| |
Collapse
|
8
|
Alp D. Strain-dependent effectivity, and protective role against enzymes of S-layers in Lactiplantibacillus plantarum strains. J Basic Microbiol 2022; 62:555-567. [PMID: 35302654 DOI: 10.1002/jobm.202100590] [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: 11/03/2021] [Revised: 01/10/2022] [Accepted: 02/26/2022] [Indexed: 11/11/2022]
Abstract
The present study investigated whether the surface layer (S-layer), which is known to have a varying effect from strain to strain on aggregation, adhesion ability, also has an effect on the resistance of bacteria to digestive enzymes, phenol, lysozymes. The effect of S-layers on the resistance against various enzymes, aggregation and adhesion abilities, and strain specificity were determined of eight Lactiplantibacillus plantarum strains. Strains were treated with 5 M lithium chloride (LiCl) to extract the S-layers, the presence of this layer in those microorganisms was demonstrated by polyacrylamide gel electrophoresis. Scanning electron microscopy was used to visualize the separation of the S-layer, which surrounds the microorganism, from the microorganism by the LiCl. The images were taken three times, once at the beginning, once 30 min later, and once at the end of this process, which took 2 h in total. The effect against enzymes varied depending on the strain, but it was determined that all the tested strains had a serious loss of viability against phenol in the absence of an S-layer. Lpb. plantarum DA100 showed a maximum decrease against gastrointestinal system enzymes after the LiCl (96.48 ± 0.03% before and 66.46 ± 0.01% after LiCl). Lpb. plantarum DA255 showed a significant decrease against lysozyme (99.11 ± 0.00% before and 62.80 ± 0.0% after LiCl). Removal of the S-layer greatly affected the adhesion ability of some strains, while for others there was hardly any change. The results showed that the role of the S-layer may be strain-specific, the rate of effect can vary. The primary function of S-layer proteins is thought to contribute to the adhesion ability of bacteria. There are limited studies that have reported the protective property of this layer against various enzymes, however, our results showed that S-layer could be one of the resistance strategies developed by bacteria against enzymes.
Collapse
Affiliation(s)
- Duygu Alp
- Department of Gastronomy and Culinary Arts, School of Tourism and Hospitality Management, Ardahan University, Ardahan, Turkey
| |
Collapse
|
9
|
Fu M, Mao K, Gao J, Wang X, Sadiq FA, Li J, Sang Y. Characteristics of surface layer protein from Lactobacillus kefiri HBA20 and the role in mediating interactions with Saccharomyces cerevisiae Y8. Int J Biol Macromol 2021; 201:254-261. [PMID: 34952095 DOI: 10.1016/j.ijbiomac.2021.12.049] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2021] [Revised: 12/07/2021] [Accepted: 12/07/2021] [Indexed: 11/18/2022]
Abstract
In this study, the surface layer protein (SLP) from Lactobacillus kefiri HBA20 was characterized. The SLP was extracted by 5 M LiCl. The molecular mass of the SLP was approximately 64 kDa as analyzed via SDS-PAGE. The surface morphology and the adhesion potential of L. kefiri HBA20 in the absence and presence of SLP were measured by AFM. Moreover, the protein secondary structure was evaluated by using circular dichroism (CD) and Fourier transform infrared spectroscopy (FTIR), respectively. SLP had high β-sheet contents and low content of α-helix. Thermal analysis of SLP of Lactobacillus kefiri HBA20 exhibited one transition peak at 129.64 °C. Furthermore, SEM measurements were showed that after the SLP were removed from the cell surface, the coaggregation ability with Saccharomyces cerevisiae Y8 of the strain was significantly reduced. In conclusion, the SLP of Lactobacillus kefiri HBA20 has a stable structure and the ability of adhesion to yeast. Molecular docking study revealed that mannan bind with the hydrophobic residues of SLP. Our results will help further understanding of the new surface layer protein and the interaction between L. kefiri and S. cerevisiae.
Collapse
Affiliation(s)
- Mengqi Fu
- Collage of Food Science and Technology, Hebei Agricultural University, Baoding, China
| | - Kemin Mao
- Collage of Food Science and Technology, Hebei Agricultural University, Baoding, China
| | - Jie Gao
- Collage of Food Science and Technology, Hebei Agricultural University, Baoding, China
| | - Xianghong Wang
- Collage of Food Science and Technology, Hebei Agricultural University, Baoding, China
| | | | - Jiale Li
- Collage of Food Science and Technology, Hebei Agricultural University, Baoding, China
| | - Yaxin Sang
- Collage of Food Science and Technology, Hebei Agricultural University, Baoding, China.
| |
Collapse
|
10
|
Liu C, Zheng J, Ou X, Han Y. Anti-cancer Substances and Safety of Lactic Acid Bacteria in Clinical Treatment. Front Microbiol 2021; 12:722052. [PMID: 34721321 PMCID: PMC8548880 DOI: 10.3389/fmicb.2021.722052] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2021] [Accepted: 09/08/2021] [Indexed: 01/06/2023] Open
Abstract
Lactic acid bacteria (LAB) are a kind of Gram-positive bacteria which can colonize in the biological gastrointestinal tract and play a variety of probiotic roles. LAB have a wide range of applications in industry, animal husbandry, planting, food safety, and medical science fields. Previous studies on LAB have typically concentrated on their effects on improving the digestion and absorption of the gastrointestinal tract, regulating the balance of the microflora, and inhibiting the production and accumulation of toxic substances. The resistance of LAB to cancer is a topic of growing interest and relevance. This paper provided a summary of bio-active substances of LAB when they act against cancer, as well as the safety of LAB in clinical cancer treatment. Moreover, this paper further discussed several possible directions for future research and the potential application of LAB as anti-cancer therapy.
Collapse
Affiliation(s)
- Chaoran Liu
- College of Animal Science and Technology, Southwest University, Chongqing, China
| | - Jiaqi Zheng
- College of Animal Science and Technology, Southwest University, Chongqing, China
| | - Xuan Ou
- College of Animal Science and Technology, Southwest University, Chongqing, China
| | - Yuzhu Han
- College of Animal Science and Technology, Southwest University, Chongqing, China
- Immunology Research Center, Medical Research Institute, Southwest University, Chongqing, China
| |
Collapse
|
11
|
Celebioglu HU, Erden Y, Ozel HB. In vitro cytotoxic effects of lactobacilli grown with lime honey on human breast and colon cancer cells. FOOD BIOSCI 2021. [DOI: 10.1016/j.fbio.2021.101020] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|