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Barzkar N, Bunphueak P, Chamsodsai P, Muangrod P, Thumthanaruk B, Rungsardthong V, Tabtimmai L. Jellyfish protein hydrolysates: Multifunctional bioactivities unveiled in the battle against diabetes, inflammation, and bacterial pathogenesis. Microb Pathog 2024; 191:106648. [PMID: 38641070 DOI: 10.1016/j.micpath.2024.106648] [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: 01/03/2024] [Revised: 04/10/2024] [Accepted: 04/14/2024] [Indexed: 04/21/2024]
Abstract
This study investigates the multifunctional bioactivities of pepsin-hydrolyzed jellyfish by-products (Rhopilema hispidum and Lobonema smithii), focusing on their anti-α-glucosidase activity, anti-inflammatory effects, anti-bacterial properties, and ability to inhibit biofilm formation of Staphylococcus aureus. Our findings revealed that jellyfish protein hydrolysates, particularly from Rhopilema hispidum, exhibit significant anti-α-glucosidase activity, surpassing the well-known α-glucosidase inhibitor Acarbose. Furthermore, we demonstrated the anti-inflammatory capabilities of these hydrolysates in suppressing lipopolysaccharide (LPS)-induced nitric oxide production in murine macrophage cells. This effect was dose-dependent and non-cytotoxic, highlighting the hydrolysate potential in treating inflammation-related conditions. Regarding anti-bacterial activity, pepsin-hydrolyzed jellyfish selectively exhibited a potent effect against S. aureus, including Methicillin-susceptible and Methicillin-resistant strains. This activity was evident at minimum inhibitory concentrations (MIC) of 25 μg/mL for S. aureus ATCC10832, while a modest effect was observed against other Gram-positive strains. The hydrolysates effectively delayed bacterial growth dose-dependently, suggesting their use as alternative agents against bacterial infections. Most notably, pepsin-hydrolyzed jellyfish showed significant anti-biofilm activity against S. aureus. The umbrella section hydrolysate of Rhopilema hispidum was particularly effective, reducing biofilm formation through downregulating the icaA gene, crucial for biofilm development. Furthermore, the hydrolysates modulated the expression of the agrA gene, a key regulator in the pathogenesis of S. aureus. In conclusion, pepsin-hydrolyzed jellyfish protein hydrolysates exhibit promising multifunctional bioactivities, including anti-diabetic, anti-inflammatory, antibacterial, and anti-biofilm properties. These findings suggest their potential application in pharmaceutical and nutraceutical fields, particularly in managing diabetic risks, inflammation, bacterial infections, and combating the biofilm-associated pathogenicity of S. aureus.
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Affiliation(s)
- Noora Barzkar
- Department of Agro-Industrial, Food and Environmental Technology, Faculty of Applied Science King Mongkut's University of Technology North Bangkok, 10800, Thailand; Food and Agro-Industrial Research Center, King Mongkut's University of Technology North Bangkok, 10800, Thailand
| | - Pinchuta Bunphueak
- Food and Agro-Industrial Research Center, King Mongkut's University of Technology North Bangkok, 10800, Thailand; Department of Biotechnology, Faculty of Applied Science, King Mongkut's University of Technology North Bangkok, 10800, Thailand
| | - Phumin Chamsodsai
- Interdisciplinary Program in Genetic Engineering and Bioinformatics, Graduate School, Kasetsart University, Bangkok, 10800, Thailand
| | - Pratchaya Muangrod
- Department of Agro-Industrial, Food and Environmental Technology, Faculty of Applied Science King Mongkut's University of Technology North Bangkok, 10800, Thailand; Food and Agro-Industrial Research Center, King Mongkut's University of Technology North Bangkok, 10800, Thailand
| | - Benjawan Thumthanaruk
- Department of Agro-Industrial, Food and Environmental Technology, Faculty of Applied Science King Mongkut's University of Technology North Bangkok, 10800, Thailand; Food and Agro-Industrial Research Center, King Mongkut's University of Technology North Bangkok, 10800, Thailand
| | - Vilai Rungsardthong
- Department of Agro-Industrial, Food and Environmental Technology, Faculty of Applied Science King Mongkut's University of Technology North Bangkok, 10800, Thailand; Food and Agro-Industrial Research Center, King Mongkut's University of Technology North Bangkok, 10800, Thailand
| | - Lueacha Tabtimmai
- Food and Agro-Industrial Research Center, King Mongkut's University of Technology North Bangkok, 10800, Thailand; Department of Biotechnology, Faculty of Applied Science, King Mongkut's University of Technology North Bangkok, 10800, Thailand.
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Fu J, Zhao Y, Zhou Y, Wang Y, Fei Z, Wang W, Wu J, Zhang F, Zhao Y, Li J, Hao J, Niu Y. MrERF039 transcription factor plays an active role in the cold response of Medicago ruthenica as a sugar molecular switch. PLANT, CELL & ENVIRONMENT 2024; 47:1834-1851. [PMID: 38318779 DOI: 10.1111/pce.14845] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/18/2023] [Revised: 01/21/2024] [Accepted: 01/23/2024] [Indexed: 02/07/2024]
Abstract
Cold stress severely restricts plant development, causing significant agricultural losses. We found a critical transcription factor network in Medicago ruthenica was involved in plant adaptation to low-temperature. APETALA2/ethylene responsive factor (AP2/ERF) transcription factor MrERF039 was transcriptionally induced by cold stress in M. ruthenica. Overexpression of MrERF039 significantly increased the glucose and maltose content, thereby improving the tolerance of M. ruthenica. MrERF039 could bind to the DRE cis-acting element in the MrCAS15A promoter. Additionally, the methyl group of the 14th amino acid in MrERF039 was required for binding. Transcriptome analysis showed that MrERF039 acted as a sugar molecular switch, regulating numerous sugar transporters and sugar metabolism-related genes. In addition, we found that MrERF039 could directly regulate β-amylase gene, UDP glycosyltransferase gene, and C2H2 zinc finger protein gene expression. In conclusion, these findings suggest that high expression of MrERF039 can significantly improve the cold tolerance of M. ruthenica root tissues during cold acclimation. Our results provide a new theoretical basis and candidate genes for breeding new legume forage varieties with high resistance.
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Affiliation(s)
- Jiabin Fu
- Key Laboratory of Forage and Endemic Crop Biology, Ministry of Education, College of Life Sciences, Inner Mongolia University, Hohhot, China
| | - Yanyun Zhao
- Key Laboratory of Forage and Endemic Crop Biology, Ministry of Education, College of Life Sciences, Inner Mongolia University, Hohhot, China
| | - Yan Zhou
- Key Laboratory of Forage and Endemic Crop Biology, Ministry of Education, College of Life Sciences, Inner Mongolia University, Hohhot, China
| | - Yu Wang
- Key Laboratory of Forage and Endemic Crop Biology, Ministry of Education, College of Life Sciences, Inner Mongolia University, Hohhot, China
| | - Zhimin Fei
- Key Laboratory of Forage and Endemic Crop Biology, Ministry of Education, College of Life Sciences, Inner Mongolia University, Hohhot, China
| | - Waner Wang
- Key Laboratory of Forage and Endemic Crop Biology, Ministry of Education, College of Life Sciences, Inner Mongolia University, Hohhot, China
| | - Jiaming Wu
- Key Laboratory of Forage and Endemic Crop Biology, Ministry of Education, College of Life Sciences, Inner Mongolia University, Hohhot, China
| | - Feng Zhang
- Key Laboratory of Forage and Endemic Crop Biology, Ministry of Education, College of Life Sciences, Inner Mongolia University, Hohhot, China
| | - Yan Zhao
- Key Laboratory of Forage and Endemic Crop Biology, Ministry of Education, College of Life Sciences, Inner Mongolia University, Hohhot, China
| | - Jiayu Li
- Key Laboratory of Forage and Endemic Crop Biology, Ministry of Education, College of Life Sciences, Inner Mongolia University, Hohhot, China
| | - Jinfeng Hao
- Key Laboratory of Forage and Endemic Crop Biology, Ministry of Education, College of Life Sciences, Inner Mongolia University, Hohhot, China
| | - Yiding Niu
- Key Laboratory of Forage and Endemic Crop Biology, Ministry of Education, College of Life Sciences, Inner Mongolia University, Hohhot, China
- Inner Mongolia Academy of Science and Technology, Hohhot, China
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Emkani M, Moundanga S, Oliete B, Saurel R. Protein composition and nutritional aspects of pea protein fractions obtained by a modified isoelectric precipitation method using fermentation. Front Nutr 2023; 10:1284413. [PMID: 38024383 PMCID: PMC10652897 DOI: 10.3389/fnut.2023.1284413] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2023] [Accepted: 10/09/2023] [Indexed: 12/01/2023] Open
Abstract
Pea albumins are promising for their nutritional, biological, and techno-functional properties. However, this fraction is usually discarded in the industry due to its low protein content compared to globulin fraction and the presence of some anti-nutritional compounds. In the present study, we used an alternative method of pea protein extraction based on alkaline solubilization/isoelectric precipitation in which the reduction of pH was achieved by lactic acid fermentation using specific starters instead of mineral acids. Hence, the main objective of this study was to examine the protein profile and the content of anti-nutritional and nutritional active compounds in pea albumin-rich fractions obtained by the isoelectric extraction method without (control) or with fermentation with different lactic acid bacteria (Streptococcus thermophilus, Lactiplantibacillus plantarum, and their co-culture). Different pea cultivars (Cartouche, Ascension, and Assas) were used here for their differences in protein profile. The results revealed a higher total nitrogen content in albumin-rich fraction for fermented samples and, in particular, for co-culture. The majority of total nitrogen was determined as non-protein (~50%), suggesting the degradation of proteins by LAB to small peptides and amino acids, which were solubilized in the soluble fraction (albumin) as confirmed by size exclusion chromatography (SEC-HPLC) analysis. Moreover, the higher antioxidant activity of fermented albumin samples was attributed to the production of small peptides during extraction. Lactic acid fermentation also resulted in a significant reduction of trypsin inhibitor activity, α-galactoside, and phytic acid content of this fraction compared to control.
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Affiliation(s)
| | | | | | - Rémi Saurel
- Univ. Bourgogne Franche-Comté, L'Institut Agro Dijon, PAM UMR A 02.102, F-21000 Dijon, France
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Iametti S. Preface. Biofactors 2023; 49:974-975. [PMID: 37712487 DOI: 10.1002/biof.2010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/05/2023] [Accepted: 09/08/2023] [Indexed: 09/16/2023]
Affiliation(s)
- Stefania Iametti
- Section of Chemical and Biomolecular Sciences, Departement of Food, Enviromental and Nutritional Sciences, University of Milano, Milano, Italy
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