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Pipaliya R, Basaiawmoit B, Sakure AA, Maurya R, Bishnoi M, Kondepudi KK, Singh BP, Paul S, Liu Z, Sarkar P, Patel A, Hati S. Peptidomics-based identification of antihypertensive and antidiabetic peptides from sheep milk fermented using Limosilactobacillus fermentum KGL4 MTCC 25515 with anti-inflammatory activity: in silico, in vitro, and molecular docking studies. Front Chem 2024; 12:1389846. [PMID: 38746020 PMCID: PMC11091447 DOI: 10.3389/fchem.2024.1389846] [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: 02/22/2024] [Accepted: 04/01/2024] [Indexed: 05/16/2024] Open
Abstract
This study investigated the synthesis of bioactive peptides from sheep milk through fermentation with Limosilactobacillus fermentum KGL4 MTCC 25515 strain and assessed lipase inhibition, ACE inhibition, α-glucosidase inhibition, and α-amylase inhibition activities during the fermentation process. The study observed the highest activities, reaching 74.82%, 70.02%, 72.19%, and 67.08% (lipase inhibition, ACE inhibition, α-glucosidase inhibition, and α-amylase inhibition) after 48 h at 37°C, respectively. Growth optimization experiments revealed that a 2.5% inoculation rate after 48 h of fermentation time resulted in the highest proteolytic activity at 9.88 mg/mL. Additionally, fractions with less than 3 kDa of molecular weight exhibited superior ACE-inhibition and anti-diabetic activities compared to other fractions. Fermentation of sheep milk with KGL4 led to a significant reduction in the excessive production of NO, TNF-α, IL-6, and IL-1β produced in RAW 267.4 cells upon treatment with LPS. Peptides were purified utilizing SDS-PAGE and electrophoresis on 2D gels, identifying a maximum number of proteins bands ranging 10-70 kDa. Peptide sequences were cross-referenced with AHTPDB and BIOPEP databases, confirming potential antihypertensive and antidiabetic properties. Notably, the peptide (GPFPILV) exhibited the highest HPEPDOCK score against both α-amylase and ACE.
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Affiliation(s)
- Rinkal Pipaliya
- Department of Dairy Microbiology, SMC College of Dairy Science, Kamdhenu University, Anand, Gujarat, India
| | - Bethsheba Basaiawmoit
- Department of Rural Development and Agricultural Production, North-Eastern Hill University, Tura Campus, Chasingre, Meghalaya, India
| | - Amar A. Sakure
- Departmentof Agriculture Biotechnology, Anand Agricultural University, Anand, Gujarat, India
| | - Ruchika Maurya
- Regional Center for Biotechnology, Faridabad, Haryana, India
- Healthy Gut Research Group, Food and Nutritional Biotechnology Division, National Agri-Food Biotechnology Institute, SAS Nagar, Punjab, India
| | - Mahendra Bishnoi
- Healthy Gut Research Group, Food and Nutritional Biotechnology Division, National Agri-Food Biotechnology Institute, SAS Nagar, Punjab, India
| | - Kanthi Kiran Kondepudi
- Healthy Gut Research Group, Food and Nutritional Biotechnology Division, National Agri-Food Biotechnology Institute, SAS Nagar, Punjab, India
| | - Brij Pal Singh
- Department of Microbiology, School of Interdisciplinary and Applied Sciences, Central University of Haryana, Mahendergarh, India
| | - Souparno Paul
- Department of Microbiology, School of Interdisciplinary and Applied Sciences, Central University of Haryana, Mahendergarh, India
| | - Zhenbin Liu
- School of Food and Biological Engineering, Shaanxi University of Science and Technology, Xi’an, China
| | - Preetam Sarkar
- Department of Food Process Engineering, National Institute of Technology, Rourkela, India
| | - Ashish Patel
- Department of Animal Genetics and Breeding, College of Veterinary Science, Kamdhenu University, Anand, Gujarat, India
| | - Subrota Hati
- Department of Dairy Microbiology, SMC College of Dairy Science, Kamdhenu University, Anand, Gujarat, India
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Zenk N, Laumer F, Dalabasmaz S, Stützer J, Mauser A, Pischetsrieder M. Comprehensive species- and processing-specific peptide profiling of pasteurized, extended shelf-life and ultra-high temperature milk from cow, goat, sheep, buffalo, and mare. Food Chem 2024; 438:137973. [PMID: 37979257 DOI: 10.1016/j.foodchem.2023.137973] [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: 07/11/2023] [Revised: 11/03/2023] [Accepted: 11/10/2023] [Indexed: 11/20/2023]
Abstract
The present study aimed to identify endogenous milk peptides for species differentiation independent of heat exposure. Thus, comprehensive milk peptide profiles from five species and three types of heat treatments were analyzed by micro-flow liquid chromatography ion mobility quadrupole time-of-flight mass spectrometry (microLC-IM-QTOF) with subsequent database search leading to ≥ 3000 identified peptides. In the milks, 1154 peptides were unique for cow, 712 for sheep, 466 for goat, 197 for buffalo, and 69 for mare. Most peptides were detected in extended-shelf life (ESL) milk (2010), followed by ultra-high temperature (UHT) processed (1474) and pasteurized milk (1459 peptides), with 693 peptides present in all milk types. A blind test set of 64 samples confirmed eight species-specific, but heat-independent marker peptides in milk from cow, seven from goat, six from sheep, nine from buffalo, and three from mare. The generated peptide profiles can also be used to identify species- and heat-specific markers.
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Affiliation(s)
- Nora Zenk
- Food Chemistry, Department of Chemistry and Pharmacy, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Nikolaus-Fiebiger-Str. 10, 91058 Erlangen, Germany.
| | - Franziska Laumer
- Food Chemistry, Department of Chemistry and Pharmacy, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Nikolaus-Fiebiger-Str. 10, 91058 Erlangen, Germany.
| | - Sevim Dalabasmaz
- Food Chemistry, Department of Chemistry and Pharmacy, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Nikolaus-Fiebiger-Str. 10, 91058 Erlangen, Germany.
| | - Joachim Stützer
- Food Chemistry, Department of Chemistry and Pharmacy, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Nikolaus-Fiebiger-Str. 10, 91058 Erlangen, Germany.
| | - Andreas Mauser
- Food Chemistry, Department of Chemistry and Pharmacy, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Nikolaus-Fiebiger-Str. 10, 91058 Erlangen, Germany.
| | - Monika Pischetsrieder
- Food Chemistry, Department of Chemistry and Pharmacy, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Nikolaus-Fiebiger-Str. 10, 91058 Erlangen, Germany; FAU NeW - Research Center New Bioactive Compounds, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Nikolaus-Fiebiger-Str. 10, 91058 Erlangen, Germany.
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3
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Bisutti V, Vanzin A, Pegolo S, Toscano A, Gianesella M, Sturaro E, Schiavon S, Gallo L, Tagliapietra F, Giannuzzi D, Cecchinato A. Effect of intramammary infection and inflammation on milk protein profile assessed at the quarter level in Holstein cows. J Dairy Sci 2024; 107:1413-1426. [PMID: 37863294 DOI: 10.3168/jds.2023-23818] [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: 05/30/2023] [Accepted: 09/21/2023] [Indexed: 10/22/2023]
Abstract
In this study we wanted to investigate the associations between naturally occurring subclinical intramammary infection (IMI) caused by different etiological agents (i.e., Staphylococcus aureus, Streptococcus agalactiae, Streptococcus uberis, and Prototheca spp.), in combination with somatic cell count (SCC), on the detailed milk protein profile measured at the individual mammary gland quarter. An initial bacteriological screening (time 0; T0) conducted on individual composite milk from 450 Holstein cows reared in 3 herds, was performed to identify cows with subclinical IMI. We identified 78 infected animals which were followed up at the quarter level at 2 different sampling times: T1 and T2, 2 and 6 wk after T0, respectively. A total of 529 quarter samples belonging to the previously selected animals were collected at the 2 sampling points and analyzed with a reversed phase HPLC (RP-HPLC) validated method. Specifically, we identified and quantified 4 caseins (CN), namely αS1-CN, αS2-CN, κ-CN, and β-CN, and 3 whey protein fractions, namely β-lactoglobulin, α-lactalbumin, and lactoferrin (LF), which were later expressed both quantitatively (g/L) and qualitatively (as a percentage of the total milk nitrogen content, % N). Data were analyzed with a hierarchical linear mixed model with the following fixed effects: days in milk (DIM), parity, herd, SCC, bacteriological status (BACT), and the SCC × BACT interaction. The random effect of individual cow, nested within herd, DIM and parity was used as the error term for the latter effects. Both IMI (i.e., BACT) and SCC significantly reduced the proportion of β-CN and αS1-CN, ascribed to the increased activity of both milk endogenous and microbial proteases. Less evident alterations were found for whey proteins, except for LF, which being a glycoprotein with direct and undirect antimicrobial activity, increased both with IMI and SCC, suggesting its involvement in the modulation of both the innate and adaptive immune response. Finally, increasing SCC in the positive samples was associated with a more marked reduction of total caseins at T1, and αS1-CN at T2, suggesting a synergic effect of infection and inflammation, more evident at high SCC. In conclusion, our work helps clarify the behavior of protein fractions at quarter level in animals having subclinical IMI. The inflammation status driven by the increase in SCC, rather the infection, was associated with the most significant changes, suggesting that the activity of endogenous proteolytic enzymes related to the onset of inflammation might have a pivotal role in directing the alteration of the milk protein profile.
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Affiliation(s)
- V Bisutti
- Department of Agronomy, Food, Natural Resources, Animals and Environment (DAFNAE), University of Padova, 35020, Legnaro (PD), Italy
| | - A Vanzin
- Department of Agronomy, Food, Natural Resources, Animals and Environment (DAFNAE), University of Padova, 35020, Legnaro (PD), Italy
| | - S Pegolo
- Department of Agronomy, Food, Natural Resources, Animals and Environment (DAFNAE), University of Padova, 35020, Legnaro (PD), Italy.
| | - A Toscano
- Department of Agronomy, Food, Natural Resources, Animals and Environment (DAFNAE), University of Padova, 35020, Legnaro (PD), Italy
| | - M Gianesella
- Department of Animal Medicine, Productions and Health, University of Padua, 35020, Legnaro (PD), Italy
| | - E Sturaro
- Department of Agronomy, Food, Natural Resources, Animals and Environment (DAFNAE), University of Padova, 35020, Legnaro (PD), Italy
| | - S Schiavon
- Department of Agronomy, Food, Natural Resources, Animals and Environment (DAFNAE), University of Padova, 35020, Legnaro (PD), Italy
| | - L Gallo
- Department of Agronomy, Food, Natural Resources, Animals and Environment (DAFNAE), University of Padova, 35020, Legnaro (PD), Italy
| | - F Tagliapietra
- Department of Agronomy, Food, Natural Resources, Animals and Environment (DAFNAE), University of Padova, 35020, Legnaro (PD), Italy
| | - D Giannuzzi
- Department of Agronomy, Food, Natural Resources, Animals and Environment (DAFNAE), University of Padova, 35020, Legnaro (PD), Italy
| | - A Cecchinato
- Department of Agronomy, Food, Natural Resources, Animals and Environment (DAFNAE), University of Padova, 35020, Legnaro (PD), Italy
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4
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Schrader M. Origins, Technological Advancement, and Applications of Peptidomics. Methods Mol Biol 2024; 2758:3-47. [PMID: 38549006 DOI: 10.1007/978-1-0716-3646-6_1] [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: 04/02/2024]
Abstract
Peptidomics is the comprehensive characterization of peptides from biological sources instead of heading for a few single peptides in former peptide research. Mass spectrometry allows to detect a multitude of peptides in complex mixtures and thus enables new strategies leading to peptidomics. The term was established in the year 2001, and up to now, this new field has grown to over 3000 publications. Analytical techniques originally developed for fast and comprehensive analysis of peptides in proteomics were specifically adjusted for peptidomics. Although it is thus closely linked to proteomics, there are fundamental differences with conventional bottom-up proteomics. Fundamental technological advancements of peptidomics since have occurred in mass spectrometry and data processing, including quantification, and more slightly in separation technology. Different strategies and diverse sources of peptidomes are mentioned by numerous applications, such as discovery of neuropeptides and other bioactive peptides, including the use of biochemical assays. Furthermore, food and plant peptidomics are introduced similarly. Additionally, applications with a clinical focus are included, comprising biomarker discovery as well as immunopeptidomics. This overview extensively reviews recent methods, strategies, and applications including links to all other chapters of this book.
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Affiliation(s)
- Michael Schrader
- Department of Bioengineering Sciences, Weihenstephan-Tr. University of Applied Sciences, Freising, Germany.
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5
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Jia W, Peng J, Zhang Y, Zhu J, Qiang X, Zhang R, Shi L. Exploring novel ANGICon-EIPs through ameliorated peptidomics techniques: Can deep learning strategies as a core breakthrough in peptide structure and function prediction? Food Res Int 2023; 174:113640. [PMID: 37986483 DOI: 10.1016/j.foodres.2023.113640] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2023] [Revised: 10/23/2023] [Accepted: 10/24/2023] [Indexed: 11/22/2023]
Abstract
Dairy-derived angiotensin-I-converting enzyme inhibitory peptides (ANGICon-EIPs) have been regarded as a relatively safe supplementary diet-therapy strategy for individuals with hypertension, and short-chain peptides may have more relevant antihypertensive benefits due to their direct intestinal absorption. Our previous explorations have confirmed that endogenous goat milk short-chain peptides are also an essential source of ANGICon-EIPs. Nonetheless, there are limited explorations on endogenous ANGICon-EIPs owing to the limitations of the extraction and enrichment of endogenous peptides, currently. This review outlined ameliorated pre-treatment strategies, data acquisition methods, and tools for the prediction of peptide structure and function, aiming to provide creative ideas for discovering novel ANGICon-EIPs. Currently, deep learning-based peptide structure and function prediction algorithms have achieved significant advancements. The convolutional neural network (CNN) and peptide sequence-based multi-label deep learning approach for determining the multi-functionalities of bioactive peptides (MLBP) can predict multiple peptide functions with absolute true value and accuracy of 0.699 and 0.708, respectively. Utilizing peptide sequence input, torsion angles, and inter-residue distance to train neural networks, APPTEST predicted the average backbone root mean square deviation (RMSD) value of peptide (5-40 aa) structures as low as 1.96 Å. Overall, with the exploration of more neural network architectures, deep learning could be considered a critical research tool to reduce the cost and improve the efficiency of identifying novel endogenous ANGICon-EIPs.
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Affiliation(s)
- Wei Jia
- School of Food and Bioengineering, Shaanxi University of Science and Technology, Xi'an 710021, China; Inspection and Testing Center of Fuping County (Shaanxi goat milk product quality supervision and Inspection Center), Weinan 711700, China; Shaanxi Research Institute of Agricultural Products Processing Technology, Xi'an 710021, China.
| | - Jian Peng
- School of Food and Bioengineering, Shaanxi University of Science and Technology, Xi'an 710021, China
| | - Yan Zhang
- Inspection and Testing Center of Fuping County (Shaanxi goat milk product quality supervision and Inspection Center), Weinan 711700, China
| | - Jiying Zhu
- School of Food and Bioengineering, Shaanxi University of Science and Technology, Xi'an 710021, China
| | - Xin Qiang
- Inspection and Testing Center of Fuping County (Shaanxi goat milk product quality supervision and Inspection Center), Weinan 711700, China
| | - Rong Zhang
- School of Food and Bioengineering, Shaanxi University of Science and Technology, Xi'an 710021, China
| | - Lin Shi
- School of Food and Bioengineering, Shaanxi University of Science and Technology, Xi'an 710021, China
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6
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Horstmann G, Schäfer J, Rosenberger M, Seitl I, Hinrichs J, Fischer L. The behavior of cathepsin D during milk processing and its contribution to bitterness in a model fresh cheese. J Dairy Sci 2023:S0022-0302(23)00300-4. [PMID: 37268572 DOI: 10.3168/jds.2022-22914] [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: 10/16/2022] [Accepted: 01/29/2023] [Indexed: 06/04/2023]
Abstract
The bovine endopeptidase cathepsin D was investigated regarding its temperature-dependent inactivation and ability to form bitter peptides within a spiked model fresh cheese. Cathepsin D was found to be more susceptible than other milk endogenous peptidases to temperature treatments in skim milk. Inactivation kinetics revealed decimal reduction times of 5.6 min to 10 s in a temperature range from 60 to 80°C. High temperature and ultra-high temperature (UHT) treatments from 90 to 140°C completely inactivated cathepsin D within 5 s. A residual cathepsin D activity of around 20% was detected under pasteurization conditions (72°C for 20 s). Therefore, investigations were done to estimate the effect of residual cathepsin D activity on taste in a model fresh cheese. The UHT-treated skim milk was spiked with cathepsin D and acidified with glucono-δ-lactone to produce a model fresh cheese. A trained bitter-sensitive panel was not able to distinguish cathepsin D-spiked model fresh cheeses from the control model fresh cheeses in a triangle test. Model fresh cheese samples were also analyzed for known bitter peptides derived from casein fractions using a HPLC-tandem mass spectrometry (MS) approach. In accordance with the sensory evaluation, the MS analyses revealed that the bitter peptides investigated within the cathepsin D-spiked model fresh cheese were not found or were below the limit of detection. Even though cathepsin D may be present during the fermentation of pasteurized milk, it does not seem to be responsible for bitter peptide formation from milk proteins on its own.
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Affiliation(s)
- Gudrun Horstmann
- Department of Biotechnology and Enzyme Science, University of Hohenheim, Institute of Food Science and Biotechnology, Garbenstrasse 25, 70599 Stuttgart, Germany
| | - Johannes Schäfer
- Department of Soft Matter Science and Dairy Technology, University of Hohenheim, Institute of Food Science and Biotechnology, Garbenstrasse 21, 70599 Stuttgart, Germany
| | - Melanie Rosenberger
- Department of Soft Matter Science and Dairy Technology, University of Hohenheim, Institute of Food Science and Biotechnology, Garbenstrasse 21, 70599 Stuttgart, Germany
| | - Ines Seitl
- Department of Biotechnology and Enzyme Science, University of Hohenheim, Institute of Food Science and Biotechnology, Garbenstrasse 25, 70599 Stuttgart, Germany
| | - Jörg Hinrichs
- Department of Soft Matter Science and Dairy Technology, University of Hohenheim, Institute of Food Science and Biotechnology, Garbenstrasse 21, 70599 Stuttgart, Germany
| | - Lutz Fischer
- Department of Biotechnology and Enzyme Science, University of Hohenheim, Institute of Food Science and Biotechnology, Garbenstrasse 25, 70599 Stuttgart, Germany.
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7
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Magouz O, Mehanna N, Khalifa M, Sakr H, Gensberger-Reigl S, Dalabasmaz S, Pischetsrieder M. Profiles, antioxidative and ACE inhibitory activity of peptides released from fermented buttermilk before and after simulated gastrointestinal digestion. INNOV FOOD SCI EMERG 2023. [DOI: 10.1016/j.ifset.2022.103266] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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8
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Zhang S, Li H, Hu Q, Wang Z, Chen X. Discrimination of thermal treated bovine milk using MALDI-TOF MS coupled with machine learning. Food Control 2022. [DOI: 10.1016/j.foodcont.2022.109224] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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9
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Xiao H, Jiang H, Tu H, Jia Y, Wang H, Lü X, Fang R, Xiao G. Extraction, Isolation and Identification of Low Molecular Weight Peptides in Human Milk. Foods 2022; 11:foods11131836. [PMID: 35804652 PMCID: PMC9265843 DOI: 10.3390/foods11131836] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2022] [Revised: 06/17/2022] [Accepted: 06/20/2022] [Indexed: 11/30/2022] Open
Abstract
Human milk contains numerous free low molecular weight peptides (LMWPs), which may play an important role in infant health and growth. The bioactivities of LMWPs are determined by their structures, especially the amino acid sequences. In the present study, 81 human milk samples were collected and purified by cation-exchange solid-phase extraction (SPE). Ultra-high performance liquid chromatography coupled to quadrupole time-of-flight mass spectrometry (UPLC-QTOF-MS) was used for the separation and detection of free LMWPs in human milk. A total of 56 LMWPs were identified and quantified. These LMWPs were mainly derived from 3 regions of β-casein, which were the amino acid fragments of 16–40, 85–110, and 205–226. The predominant LMWPs were RETIESLSSSEESITEYK, RETIESLSSSEESITEYKQKVEKVK, ETIESLSSSEESITEYK, TQPLAPVHNPIS, and QPLAPVHNPISV with molecular weights of 2247.9573, 2860.2437, 2091.8591, 1372.7666, and 1271.7212, respectively. The results indicated that the technique based on SPE and UPLC-QTOF-MS might greatly facilitate the analysis of LMWPs in human milk.
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Affiliation(s)
- Hailong Xiao
- Key Laboratory of Agricultural Products Chemical and Biological Processing Technology, Zhejiang University of Science and Technology, Hangzhou 310023, China; (H.X.); (R.F.)
- Hangzhou Institute for Food and Drug Control, Hangzhou 310017, China; (H.J.); (H.T.); (Y.J.); (H.W.)
- Zhejiang Market Bureau Supervision Key Laboratory of Dairy and Dairy Products, Hangzhou 310017, China
| | - He Jiang
- Hangzhou Institute for Food and Drug Control, Hangzhou 310017, China; (H.J.); (H.T.); (Y.J.); (H.W.)
- Zhejiang Market Bureau Supervision Key Laboratory of Dairy and Dairy Products, Hangzhou 310017, China
| | - Haiyun Tu
- Hangzhou Institute for Food and Drug Control, Hangzhou 310017, China; (H.J.); (H.T.); (Y.J.); (H.W.)
- Zhejiang Market Bureau Supervision Key Laboratory of Dairy and Dairy Products, Hangzhou 310017, China
| | - Yanbo Jia
- Hangzhou Institute for Food and Drug Control, Hangzhou 310017, China; (H.J.); (H.T.); (Y.J.); (H.W.)
- Zhejiang Market Bureau Supervision Key Laboratory of Dairy and Dairy Products, Hangzhou 310017, China
| | - Hongqing Wang
- Hangzhou Institute for Food and Drug Control, Hangzhou 310017, China; (H.J.); (H.T.); (Y.J.); (H.W.)
- Zhejiang Market Bureau Supervision Key Laboratory of Dairy and Dairy Products, Hangzhou 310017, China
| | - Xin Lü
- College of Food Science and Engineering, Northwest A&F University, Xianyang 712100, China;
| | - Ruosi Fang
- Key Laboratory of Agricultural Products Chemical and Biological Processing Technology, Zhejiang University of Science and Technology, Hangzhou 310023, China; (H.X.); (R.F.)
| | - Gongnian Xiao
- Key Laboratory of Agricultural Products Chemical and Biological Processing Technology, Zhejiang University of Science and Technology, Hangzhou 310023, China; (H.X.); (R.F.)
- Correspondence: ; Tel./Fax: +86-571-85070370
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10
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Tan D, Zhang H, Tan S, Xue Y, Jia M, Zhu X, Wu H, Chen G. Differentiating ultra-high temperature milk and reconstituted milk using an untargeted peptidomic approach with chemometrics. Food Chem 2022; 394:133528. [PMID: 35749883 DOI: 10.1016/j.foodchem.2022.133528] [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: 01/06/2022] [Revised: 05/21/2022] [Accepted: 06/17/2022] [Indexed: 11/04/2022]
Abstract
An untargeted peptide profiling based on ultra-performance liquid chromatography quadrupole time-of flight mass spectrometry with chemometrics was performed to differentiate ultra-high temperature processed milk and reconstituted milk. Thirty-three marker peptides were identified, primarily released from the C- or N-terminal of β-casein and αs1-casein. These peptides were produced by heating and protease hydrolysis. Additional heating and storage time experiments showed that the level of 18 marker peptides increased with heat load and storage time, whereas 15 peptides were solely influenced by heat load. The peptides from β-casein showed higher sensitivity to thermal stress compared to those from αs1-casein. Additionally, eight modified peptides of casein were identified as indicators of milk thermal processing. The identified marker peptides can distinguish ultra-high temperature processed milk and reconstituted milk, and are suitable for monitoring heating processes and storage of milk.
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Affiliation(s)
- Dongfei Tan
- Beijing Engineering and Technology Research Center of Food Additives, Beijing Technology and Business University, Beijing 100048, China; Institute of Agro-product Safety and Nutrition, Tianjin Academy of Agricultural Sciences (TAAS), Tianjin 300192, China
| | - Hongda Zhang
- Beijing Engineering and Technology Research Center of Food Additives, Beijing Technology and Business University, Beijing 100048, China; Key Laboratory of Agro-Product Quality and Safety, Institute of Quality Standards and Testing Technology for Agro-Products, Chinese Academy of Agricultural Sciences (CAAS), Beijing 100081, China
| | - Sijia Tan
- Key Laboratory of Agro-Product Quality and Safety, Institute of Quality Standards and Testing Technology for Agro-Products, Chinese Academy of Agricultural Sciences (CAAS), Beijing 100081, China
| | - Yi Xue
- Beijing Engineering and Technology Research Center of Food Additives, Beijing Technology and Business University, Beijing 100048, China
| | - Man Jia
- Key Laboratory of Agro-Product Quality and Safety, Institute of Quality Standards and Testing Technology for Agro-Products, Chinese Academy of Agricultural Sciences (CAAS), Beijing 100081, China
| | - Xiaoyu Zhu
- Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs, Tianjin 300191, China
| | - Huaxing Wu
- Baijiu Science and Research Center, Sichuan Swellfun Co., Ltd., Chengdu 610036, China.
| | - Gang Chen
- Beijing Engineering and Technology Research Center of Food Additives, Beijing Technology and Business University, Beijing 100048, China; Key Laboratory of Agro-Product Quality and Safety, Institute of Quality Standards and Testing Technology for Agro-Products, Chinese Academy of Agricultural Sciences (CAAS), Beijing 100081, China.
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11
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Li J, Lv X, Li B, Liu L, Yu C, Cheng H, Zhou J, Zhu Y, Ma H. Identification of peptides of cinobufacini by gel filter chromatography and peptidomics. J Sep Sci 2022; 45:2845-2854. [PMID: 35675540 DOI: 10.1002/jssc.202200133] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2022] [Revised: 04/28/2022] [Accepted: 05/31/2022] [Indexed: 11/06/2022]
Abstract
Aqueous extract of toad skin (named as Cinobufacini or Huachansu) provides plentiful sources of bioactive peptides that remain undetected and unidentified. High-resolution mass spectrometry-based peptidomics platforms have developed into a major approach to the discovery of natural peptides, with data-dependent acquisition modes providing a wealth of peptide profiling information. In this study, we used a gel- and HLB (a solid phase extraction cartridge)-based two-dimensional separation and purification system and nano-liquid chromatography-tandem mass spectrometry-based peptidomic studies with homology matching for the identification of peptides from Cinobufacini. We evaluated 232 multi-charged peptides and found several specific peptides, some of which were validated by target parallel reaction monitoring mode. These peptides are the first to be identified in Cinobufacini and are completely different from ones identified in toad venom. So, this mapping provides key peptide information for the quality control of Bufo bufo gargarizans skin and its preparation.
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Affiliation(s)
- Junxian Li
- Jiangsu Collaborative Innovation Center of Chinese Medicinal Resources Industrialization, and Jiangsu Key Laboratory for High Technology Research of TCM Formulae, College of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, P. R. China
| | - Xiang Lv
- Jiangsu Collaborative Innovation Center of Chinese Medicinal Resources Industrialization, and Jiangsu Key Laboratory for High Technology Research of TCM Formulae, College of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, P. R. China
| | - Bingxv Li
- Jiangsu Collaborative Innovation Center of Chinese Medicinal Resources Industrialization, and Jiangsu Key Laboratory for High Technology Research of TCM Formulae, College of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, P. R. China
| | - Lina Liu
- The First School of Clinical Medicine, The Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, P. R. China
| | - Chengli Yu
- Jiangsu Key Laboratory for Functional Substances of Chinese Medicine, Nanjing University of Chinese Medicine, Nanjing, P. R. China
| | - Haibo Cheng
- Collaborative Innovation Center of Jiangsu Province of Cancer Prevention and Treatment of Chinese Medicine, Nanjing, P. R. China
| | - Jing Zhou
- Jiangsu Collaborative Innovation Center of Chinese Medicinal Resources Industrialization, and Jiangsu Key Laboratory for High Technology Research of TCM Formulae, College of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, P. R. China
| | - Yuyu Zhu
- Jiangsu Collaborative Innovation Center of Chinese Medicinal Resources Industrialization, and Jiangsu Key Laboratory for High Technology Research of TCM Formulae, College of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, P. R. China
| | - Hongyue Ma
- Jiangsu Collaborative Innovation Center of Chinese Medicinal Resources Industrialization, and Jiangsu Key Laboratory for High Technology Research of TCM Formulae, College of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, P. R. China
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12
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High-Resolution Mass Spectrometry and Chemometrics for the Detailed Characterization of Short Endogenous Peptides in Milk By-Products. Molecules 2021; 26:molecules26216472. [PMID: 34770881 PMCID: PMC8587072 DOI: 10.3390/molecules26216472] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2021] [Revised: 10/25/2021] [Accepted: 10/26/2021] [Indexed: 11/17/2022] Open
Abstract
The process of cheese-making has long been part of human food culture and nowadays dairy represents a large sector of the food industry. Being the main byproduct of cheese-making, the revalorization of milk whey is nowadays one of the primary goals in alignment with the principles of the circular economy. In the present paper, a deep and detailed investigation of short endogenous peptides in milk and its byproducts (whole whey, skimmed whey, and whey permeate) was carried out by high-resolution mass spectrometry, with a dedicated suspect screening data acquisition and data analysis approach. A total of 79 short peptides was tentatively identified, including several sequences already known for their exerted biological activities. An unsupervised chemometric approach was then employed for highlighting the differences in the short peptide content among the four sets of samples. Whole and skimmed whey showed not merely a higher content of short bioactive peptides compared to whole milk, but also a peculiar composition of peptides that are likely generated during the process of cheese-making. The results clearly demonstrate that whey represents a valuable source of bioactive compounds and that the set-up of processes of revalorization of milk byproducts is a promising path in the obtention of high revenue-generating products from dairy industrial waste.
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Analysis of the Endogenous Peptidomes of Different Infant Formula Types and Human Milk. Foods 2021; 10:foods10112579. [PMID: 34828867 PMCID: PMC8623676 DOI: 10.3390/foods10112579] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2021] [Revised: 10/15/2021] [Accepted: 10/22/2021] [Indexed: 01/06/2023] Open
Abstract
Infant formula (IF) is a commonly used replacement whenever mother’s own milk is not available. Most IFs are based on cow milk (powders, liquids). Alternatives, based on other sources such as goat milk or plants, exist. Independent of the source, IF production and composition are strictly regulated. Besides proteins, minerals, and lipids, milk contains a variety of endogenous peptides. Whereas the human milk peptidome has been studied intensively, the peptidomes of IFs have been mostly neglected. This study investigated the peptidomes of different types of first stage IF, including cow milk-based powders and liquids, and powdered goat milk-based IF, highlighting major similarities and differences to human milk. Extracted native peptidomes were analyzed by nanoRPC-ESI-MS/MS using two different fragmentation techniques allowing the confident identification of 1587 peptides. β-Casein peptides dominated in all samples. Interestingly, powdered and liquid cow milk-based IFs differed in the numbers of β- and αS1-casein peptides, indicating processing-derived variations. However, the peptidomes of cow and goat milk-based IF appeared to be more comparable to each other than to human milk. Despite an overlap in the major source proteins, many peptide sequences were different, i.e., species-specific. Remarkably, the data indicate that the human milk peptidome might be donor-specific as well.
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Rapid Discrimination and Authentication of Korean Farmstead Mozzarella Cheese through MALDI-TOF and Multivariate Statistical Analysis. Metabolites 2021; 11:metabo11060333. [PMID: 34063928 PMCID: PMC8224011 DOI: 10.3390/metabo11060333] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2021] [Revised: 05/20/2021] [Accepted: 05/20/2021] [Indexed: 02/07/2023] Open
Abstract
Geographical origin and authenticity are the two crucial factors that propel overall cheese perception in terms of quality and price; therefore, they are of great importance to consumers and commercial cheese producers. Herein, we demonstrate a rapid, accurate method for discrimination of domestic and import mozzarella cheeses in the Republic of Korea by matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOF MS). The protein profiles' data aided by multivariate statistical analysis successfully differentiated farmstead and import mozzarella cheeses according to their geographical location of origin. A similar investigation within domestic samples (farmsteads/companies) also showed clear discrimination regarding the producer. Using the biomarker discovery tool, we identified seven distinct proteins, of which two (m/z 7407.8 and 11,416.6) were specific in farmstead cheeses, acting as potential markers to ensure authentication and traceability. The outcome of this study can be a good resource in building a database for Korean domestic cheeses. This study also emphasizes the combined utility of MALDI-TOF MS and multivariate analysis in preventing fraudulent practices, thereby ensuring market protection for Korean farmstead cheeses.
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15
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Cakir B, Tunali-Akbay T. Potential anticarcinogenic effect of goat milk-derived bioactive peptides on HCT-116 human colorectal carcinoma cell line. Anal Biochem 2021; 622:114166. [PMID: 33726980 DOI: 10.1016/j.ab.2021.114166] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2020] [Revised: 03/02/2021] [Accepted: 03/06/2021] [Indexed: 01/06/2023]
Abstract
Novel food-derived anti cancerogenic bioactive peptides were characterized by goat milk pepsin hydrolysate. Pepsin treated casein fraction of goat milk caused an apoptotic cell death on the HCT116 cell lines. These bioactive peptides are encrypted in the protein structure in the inactive form and can become active during gastrointestinal digestion in the body. In this study, the possible therapeutic effect of goat milk-based bioactive peptides on human colorectal cancer cell lines was investigated. Goat milk-derived bioactive peptides were extracted from the casein and whey protein fractions using trypsin, pepsin, and papain enzymes. The bioactive peptides were characterized by the liquid chromatography quadrupole time of flight mass spectrometry. Both enzyme-treated casein and whey fractions were incubated with the HCT116 cell lines, and then the cell cytotoxicity was evaluated using MTT assay. The type of cell death was analyzed by flow cytometry using Annexin V and propidium iodide. Among all applications, the pepsin-treated casein fraction was the highest potential peptides that cause 80.92% apoptotic cell death. In conclusion, pepsin treated casein fraction exhibited antiproliferative activity against HCT116 cells. The bioactive peptides of this fraction can be considered as a potential source for the development of new anti cancerogenic agents.
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Affiliation(s)
- Bilal Cakir
- İstanbul Sabahattin Zaim University (İZÜ), Food and Agricultural Research Center (GTAUM), Küçükçekmece, Istanbul, Turkey.
| | - Tugba Tunali-Akbay
- Marmara University, Faculty of Dentistry, Basic Medical Sciences Department, Maltepe, Istanbul, Turkey.
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16
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Meng F, Zhao H, Lu F, Bie X, Lu Z, Lu Y. Novel Bacillus Milk-Clotting Enzyme Produces Diverse Functional Peptides in Semihard Cheese. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2021; 69:2784-2792. [PMID: 33629854 DOI: 10.1021/acs.jafc.0c08120] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Although rennet is one of the best choices for cheese manufacturing, its production cannot meet the growing demands of the cheese industry. Thus, new milk-clotting enzymes (MCEs) with similar or better properties as/than those of calf chymosin are needed urgently. Here, three MCEs, BY-2, BY-3, and BY-4, were mined by bioinformatic analysis and then expressed in and isolated from Escherichia coli. BY-4 had the highest milk-clotting activity/proteolytic activity (238.76) with enzyme properties similar to those of calf chymosin. BY-4 cheese had a composition, appearance, consistency/texture, and overall acceptability proximate to calf chymosin cheese. The EC50 values of peptides extracted from BY-4 cheese for 2,2-diphenyl-1-picrylhydrazyl inhibition (antioxidant property), angiotensin-converting enzyme inhibition (antihypertensivity), and growth inhibition of liver cancer cells (antitumor property) were found to be 81, 49, and 238 μg/mL, respectively, which were 2.35, 2.59, and 2.12 folds higher than those of calf chymosin cheese. These results indicated the potential of BY-4 as a supplement to calf chymosin in cheese manufacturing, especially for functional and health care purposes.
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Affiliation(s)
- Fanqiang Meng
- College of Food Science and Technology, Nanjing Agriculture University, 1 Weigang, Nanjing 210095, China
| | - Haizhen Zhao
- College of Food Science and Technology, Nanjing Agriculture University, 1 Weigang, Nanjing 210095, China
| | - Fengxia Lu
- College of Food Science and Technology, Nanjing Agriculture University, 1 Weigang, Nanjing 210095, China
| | - Xiaomei Bie
- College of Food Science and Technology, Nanjing Agriculture University, 1 Weigang, Nanjing 210095, China
| | - Zhaoxin Lu
- College of Food Science and Technology, Nanjing Agriculture University, 1 Weigang, Nanjing 210095, China
| | - Yingjian Lu
- College of Food Science and Engineering, Nanjing University of Finance and Economics, Nanjing 21003, China
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Saadi S, Ghazali HM, Saari N, Abdulkarim SM. The structural reconformation of peptides in enhancing functional and therapeutic properties: Insights into their solid state crystallizations. Biophys Chem 2021; 273:106565. [PMID: 33780688 DOI: 10.1016/j.bpc.2021.106565] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2020] [Revised: 02/09/2021] [Accepted: 02/19/2021] [Indexed: 01/05/2023]
Abstract
Therapeutic peptides derived proteins with alpha-reconformation states like antibody shape have shown potential effects in combating terrible diseases linked with earlier signs of angiogensis, mutagenesis and transgenesis. Alpha reconformation in material design refers to the folding of the peptide chains and their transitions under reversible chemical bonds of disulfide chemical bridges and further non-covalence lesions. Thus, the rational design of signal peptides into alpha-helix is intended in increasing the defending effects of peptides into cores like adjuvant antibiotic and/or vaccines. Thereby, the signal peptides are able in displaying multiple eradicating regions by changing crystal-depositions and deviation angles. These types of molecular structures could have multiple advantages in tracing disease syndromes and impurities by increasing the host defense against the fates of pathogens and viruses, eventually leading to the loss in signaling by increasing peptide susceptibility levels to folding and unfolding and therefore, formation of transgenic peptide models. Alpha reconformation peptides is aimed in triggering as well as other regulatory functions such as remodulating metabolic chain disorders of lipolysis and glucolysis by increasing the insulin and leptin resistance for best lipid storages and lipoprotein density distributions.
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Affiliation(s)
- Sami Saadi
- Institut de la Nutrition, de l'Alimentation et des Technologies Agro-alimentaires INATAA 25017, Université Frères Mentouri, Constantine 1, Algeria; Department of Food Science, Faculty of Food Science and Technology, Universiti Putra Malaysia, 43400 Serdang, Selangor, Malaysia.
| | - Hasanah Mohd Ghazali
- Department of Food Science, Faculty of Food Science and Technology, Universiti Putra Malaysia, 43400 Serdang, Selangor, Malaysia
| | - Nazamid Saari
- Department of Food Science, Faculty of Food Science and Technology, Universiti Putra Malaysia, 43400 Serdang, Selangor, Malaysia
| | - Sabo Mohammed Abdulkarim
- Department of Food Science, Faculty of Food Science and Technology, Universiti Putra Malaysia, 43400 Serdang, Selangor, Malaysia
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18
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Öztürk Hİ, Akın N. Effect of ripening time on peptide dynamics and bioactive peptide composition in Tulum cheese. J Dairy Sci 2021; 104:3832-3852. [PMID: 33551157 DOI: 10.3168/jds.2020-19494] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2020] [Accepted: 11/13/2020] [Indexed: 12/21/2022]
Abstract
Skin bag Tulum cheeses traditionally produced in the Central Taurus region of Turkey were studied to identify peptide profiles by liquid chromatography-tandem mass spectrometry over 180 d of ripening. After mass spectrometry analysis, 203 peptides were identified: 59 from αS1-casein (CN), 11 from αS2-CN, 129 from β-CN, and 4 from κ-CN. Numbers of αS1- and β-CN-derived peptides increased with increasing number of ripening days due to the dependence of newly formed peptides on proteolysis. However, similar increases were not observed for αS2- and κ-CN-derived peptides. Most identified peptides consisted of β-CN-derived peptides, followed by αS1-, αS2-, and κ-CN-derived peptides. Among these, bioactive peptides were found, including antihypertensive, antibacterial, antioxidant, dipeptidyl peptidase-4 inhibitory, metal chelating, skin regenerating, glucagon-like peptide-1 secretion enhancing, opioid, cathepsin B inhibitory, prolyl endopeptidase inhibitory, immunomodulatory, brain function improving, antiamnesic, antihypercholesterolemic, anti-inflammatory, and anticarcinogenic peptides.
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Affiliation(s)
- H İ Öztürk
- Department of Food Engineering, Konya Food and Agriculture University, Konya, 42080, Turkey.
| | - N Akın
- Department of Food Engineering, University of Selcuk, Konya, 42050, Turkey
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Comprehensive Profiling of the Native and Modified Peptidomes of Raw Bovine Milk and Processed Milk Products. Foods 2020; 9:foods9121841. [PMID: 33321979 PMCID: PMC7763055 DOI: 10.3390/foods9121841] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2020] [Revised: 12/03/2020] [Accepted: 12/04/2020] [Indexed: 11/18/2022] Open
Abstract
Bovine milk contains a variety of endogenous peptides, partially formed by milk proteases that may exert diverse bioactive functions. Milk storage allows further protease activities altering the milk peptidome, while processing, e.g., heat treatment can trigger diverse chemical reactions, such as Maillard reactions and oxidations, leading to different posttranslational modifications (PTMs). The influence of processing on the native and modified peptidome was studied by analyzing peptides extracted from raw milk (RM), ultra-high temperature (UHT) milk, and powdered infant formula (IF) by nano reversed-phase liquid chromatography coupled online to electrospray ionization (ESI) tandem mass spectrometry. Only unmodified peptides proposed by two independent software tools were considered as identified. Thus, 801 identified peptides mainly originated from αS- and β-caseins, but also from milk fat globular membrane proteins, such as glycosylation-dependent cell adhesion molecule 1. RM and UHT milk showed comparable unmodified peptide profiles, whereas IF differed mainly due to a higher number of β-casein peptides. When 26 non-enzymatic posttranslational modifications (PTMs) were targeted in the milk peptidomes, 175 modified peptides were identified, i.e., mostly lactosylated and a few hexosylated or oxidized peptides. Most modified peptides originated from αS-caseins. The numbers of lactosylated peptides increased with harsher processing.
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20
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Christensen B, Toth AE, Nielsen SSE, Scavenius C, Petersen SV, Enghild JJ, Rasmussen JT, Nielsen MS, Sørensen ES. Transport of a Peptide from Bovine α s1-Casein across Models of the Intestinal and Blood-Brain Barriers. Nutrients 2020; 12:nu12103157. [PMID: 33081105 PMCID: PMC7602804 DOI: 10.3390/nu12103157] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2020] [Revised: 10/11/2020] [Accepted: 10/13/2020] [Indexed: 12/24/2022] Open
Abstract
The effect of food components on brain growth and development has attracted increasing attention. Milk has been shown to contain peptides that deliver important signals to the brains of neonates and infants. In order to reach the brain, milk peptides have to resist proteolytic degradation in the gastrointestinal tract, cross the gastrointestinal barrier and later cross the highly selective blood–brain barrier (BBB). To investigate this, we purified and characterized endogenous peptides from bovine milk and investigated their apical to basal transport by using human intestinal Caco-2 cells and primary porcine brain endothelial cell monolayer models. Among 192 characterized milk peptides, only the αS1-casein peptide 185PIGSENSEKTTMPLW199, and especially fragments of this peptide processed during the transport, could cross both the intestinal barrier and the BBB cell monolayer models. This peptide was also shown to resist simulated gastrointestinal digestion. This study demonstrates that a milk derived peptide can cross the major biological barriers in vitro and potentially reach the brain, where it may deliver physiological signals.
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Affiliation(s)
- Brian Christensen
- Department of Molecular Biology and Genetics, Aarhus University, DK-8000 Aarhus, Denmark; (B.C.); (C.S.); (J.J.E.); (J.T.R.)
- iFood Center, Aarhus University, DK-8000 Aarhus, Denmark
| | - Andrea E. Toth
- Department of Biomedicine, Faculty of Health, Aarhus University, DK-8000 Aarhus, Denmark; (A.E.T.); (S.S.E.N.); (S.V.P.); (M.S.N.)
| | - Simone S. E. Nielsen
- Department of Biomedicine, Faculty of Health, Aarhus University, DK-8000 Aarhus, Denmark; (A.E.T.); (S.S.E.N.); (S.V.P.); (M.S.N.)
| | - Carsten Scavenius
- Department of Molecular Biology and Genetics, Aarhus University, DK-8000 Aarhus, Denmark; (B.C.); (C.S.); (J.J.E.); (J.T.R.)
- Interdisciplinary Nanoscience Center, Aarhus University, DK-8000 Aarhus, Denmark
| | - Steen V. Petersen
- Department of Biomedicine, Faculty of Health, Aarhus University, DK-8000 Aarhus, Denmark; (A.E.T.); (S.S.E.N.); (S.V.P.); (M.S.N.)
| | - Jan J. Enghild
- Department of Molecular Biology and Genetics, Aarhus University, DK-8000 Aarhus, Denmark; (B.C.); (C.S.); (J.J.E.); (J.T.R.)
- Interdisciplinary Nanoscience Center, Aarhus University, DK-8000 Aarhus, Denmark
| | - Jan T. Rasmussen
- Department of Molecular Biology and Genetics, Aarhus University, DK-8000 Aarhus, Denmark; (B.C.); (C.S.); (J.J.E.); (J.T.R.)
| | - Morten S. Nielsen
- Department of Biomedicine, Faculty of Health, Aarhus University, DK-8000 Aarhus, Denmark; (A.E.T.); (S.S.E.N.); (S.V.P.); (M.S.N.)
| | - Esben S. Sørensen
- Department of Molecular Biology and Genetics, Aarhus University, DK-8000 Aarhus, Denmark; (B.C.); (C.S.); (J.J.E.); (J.T.R.)
- iFood Center, Aarhus University, DK-8000 Aarhus, Denmark
- Interdisciplinary Nanoscience Center, Aarhus University, DK-8000 Aarhus, Denmark
- Correspondence: ; Tel.: +45-87155461
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Rao C, Yang F, Lai Z, Chen S, Lu X, Jiang X. Differential expression of peptides serves as an indicator of IgA nephropathy in pediatric patients. Exp Ther Med 2020; 20:67. [PMID: 32963597 PMCID: PMC7490786 DOI: 10.3892/etm.2020.9195] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2019] [Accepted: 03/10/2020] [Indexed: 11/05/2022] Open
Abstract
Peptide profiles change significantly with aging and peptide biomarkers discovered in adult patients may not be suitable for the evaluation of pediatric patients. The present study was designed to explore alterations in the serum peptidome profile of pediatric patients with IgA nephropathy (IgAN). A total of 17 children diagnosed with IgAN were recruited as the experimental group, 11 sex-matched healthy children were recruited as a healthy control group and 18 sex-matched children with other glomerular diseases were recruited as a disease control group. Serum peptides of each subject were enriched and analyzed by liquid chromatography with tandem mass spectrometry and the subsequently identified IgAN-specific peptides were evaluated using Gene Ontology enrichment and Kyoto Encyclopedia of Genes and Genomes pathway analysis. Subsequently, the function of the IgAN-specific peptides was predicted via sequence comparison with other known functional bioactive peptides. A total of 123 peptides with a fold change >2 (P<0.05) and 48 peptides with a fold change >5 (P<0.05) were identified to be differentially expressed between the pediatric IgAN group and the two other groups. Consequently, two putative peptides that may have bioactive effects in the pathogenesis of IgAN in pediatric patients were identified. The serum peptidome profile of pediatric patients with IgAN was significantly different from the disease control group and the healthy control group. These differentially expressed peptides may serve as biomarkers for the minimally invasive diagnosis of pediatric patients with IgAN. Additionally, the potential bioactive peptides specifically expressed in pediatric IgAN patients that were identified in this study may lay a foundation for exploring new therapies for IgAN, such as the creation of novel peptide drugs.
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Affiliation(s)
- Chunbao Rao
- Department of Pediatrics, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong 510080, P.R. China.,Scientific Research Center, Children's Hospital of Dongguan, Dongguan, Guangdong 523000, P.R. China
| | - Fan Yang
- Department of Pediatrics, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong 510080, P.R. China
| | - Zhijun Lai
- Pediatric Intensive Care Unit, Children's Hospital of Dongguan, Dongguan, Guangdong 523000, P.R. China
| | - Sujun Chen
- Pediatric Intensive Care Unit, Children's Hospital of Dongguan, Dongguan, Guangdong 523000, P.R. China
| | - Xiaomei Lu
- Scientific Research Center, Children's Hospital of Dongguan, Dongguan, Guangdong 523000, P.R. China
| | - Xiaoyun Jiang
- Department of Pediatrics, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong 510080, P.R. China
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Begunova AV, Savinova OS, Rozhkova IV, Krysanova YI, Fedorova TV. In Vitro Assessment of Probiotic Potential and Functional Properties of Lactobacillus reuteri LR1. APPL BIOCHEM MICRO+ 2020. [DOI: 10.1134/s000368382005004x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Chen YH, Chen HL, Fan HC, Tung YT, Kuo CW, Tu MY, Chen CM. Anti-Inflammatory, Antioxidant, and Antifibrotic Effects of Kefir Peptides on Salt-Induced Renal Vascular Damage and Dysfunction in Aged Stroke-Prone Spontaneously Hypertensive Rats. Antioxidants (Basel) 2020; 9:antiox9090790. [PMID: 32858955 PMCID: PMC7555286 DOI: 10.3390/antiox9090790] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2020] [Revised: 08/19/2020] [Accepted: 08/21/2020] [Indexed: 02/07/2023] Open
Abstract
The increased prevalence of renal dysfunction and chronic kidney disease (CKD) and the high costs and poor outcomes of treatment are a significant health issue. The consequence of chronic high blood pressure is the increased prevalence of target organ end-stage renal disease, which has been proven to be a strong independent risk factor for adverse cardiovascular disease. A previous study showed that kefir products have anti-inflammatory and anti-hypertensive activities and immunological modulation functions. However, no data regarding the beneficial effects of kefir peptides (KPs) on salt-induced renal damage or related kidney diseases are available. In this study, KPs were orally administered to aged salt-induced stroke-prone spontaneously hypertensive (SHRSP) rats, and the effects of KPs against inflammation and oxidative stress and their ability to protect against renal dysfunction were evaluated. Fifty-five-week-old SHRSP rats under induction with 1% NaCl in drinking water for 4 weeks showed multiple renal injuries with increased renal inflammation, fibrosis, oxidative stress, tubular atrophy, and glomerulosclerosis. In contrast, oral gavage with KPs reduced the urine protein to creatinine (UPC) ratio, the fractional excretion of electrolytes (FeNa and FeCl), extracellular matrix deposition, and the interstitial fibrotic α-smooth muscle actin (α-SMA) levels in salt-induced SHRSP rats. The renal infiltration of inflammatory cells; the release of monocyte chemoattractant protein-1 (MCP-1), vascular cell adhesion molecule-1 (VCAM-1), endothelin-1 (ET-1), and the cytokine nucleotide-binding oligomerization domain (NOD)-like receptor family pyrin domain containing 3 (NLRP3) and transforming growth factor-β (TGF-β); the reactive oxygen species (ROS) levels; and histopathological lesions were also decreased in salt-induced SHRSP rats. Furthermore, KP treatment significantly increased the renal superoxide dismutase (SOD) activity and the glomerular filtration rate (GFR), which exerted potent protection against salt-induced chronic kidney disease in SHRSP rats. The results of this study suggest that KPs ameliorate salt-induced renal damage, tubular atrophy, and glomerular dysfunction through anti-inflammatory, antioxidative stress, and antifibrotic activities, and might be a promising protective agent against high salt-induced renovascular-related diseases.
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Affiliation(s)
- Yu-Hsuan Chen
- Department of Life Sciences, and Ph.D. Program in Translational Medicine, National Chung Hsing University, Taichung 402, Taiwan; (Y.-H.C.); (H.-C.F.); (Y.-T.T.); (C.-W.K.); (M.-Y.T.)
- Ph.D. Program in Tissue Engineering and Regenerative Medicine, National Chung Hsing University, Taichung 402, Taiwan
- Ph.D. Program in Tissue Engineering and Regenerative Medicine, National Health Research Institutes, Taichung 402, Taiwan
| | - Hsiao-Ling Chen
- Department of Biomedical Sciences, Da-Yeh University, Changhwa 515, Taiwan;
| | - Hueng-Chuen Fan
- Department of Life Sciences, and Ph.D. Program in Translational Medicine, National Chung Hsing University, Taichung 402, Taiwan; (Y.-H.C.); (H.-C.F.); (Y.-T.T.); (C.-W.K.); (M.-Y.T.)
- Department of Pediatrics, Tungs’ Taichung Metroharbor Hospital, Wuchi, Taichung 435, Taiwan
- Department of Medical Research, Tungs’ Taichung Metroharbor Hospital, Wuchi, Taichung 435, Taiwan
- Department of Rehabilitation, Jen-Teh Junior College of Medicine, Miaoli 356, Taiwan
| | - Yu-Tang Tung
- Department of Life Sciences, and Ph.D. Program in Translational Medicine, National Chung Hsing University, Taichung 402, Taiwan; (Y.-H.C.); (H.-C.F.); (Y.-T.T.); (C.-W.K.); (M.-Y.T.)
- Institute of Metabolism and Obesity Sciences, Taipei Medical University, Taipei 110, Taiwan
| | - Chia-Wen Kuo
- Department of Life Sciences, and Ph.D. Program in Translational Medicine, National Chung Hsing University, Taichung 402, Taiwan; (Y.-H.C.); (H.-C.F.); (Y.-T.T.); (C.-W.K.); (M.-Y.T.)
- Department of Internal Medicine, Taichung Armed Forces General Hospital, Taichung 411, Taiwan
- Department of Orthopaedic Surgery, Taichung Armed Forces General Hospital, Taichung 411, Taiwan
| | - Min-Yu Tu
- Department of Life Sciences, and Ph.D. Program in Translational Medicine, National Chung Hsing University, Taichung 402, Taiwan; (Y.-H.C.); (H.-C.F.); (Y.-T.T.); (C.-W.K.); (M.-Y.T.)
- Aviation Physiology Research Laboratory, Kaohsiung Armed Forces General Hospital Gangshan Branch, Kaohsiung 820, Taiwan
| | - Chuan-Mu Chen
- Department of Life Sciences, and Ph.D. Program in Translational Medicine, National Chung Hsing University, Taichung 402, Taiwan; (Y.-H.C.); (H.-C.F.); (Y.-T.T.); (C.-W.K.); (M.-Y.T.)
- The iEGG and Animal Biotechnology Center, and Rong Hsing Research Center for Translational Medicine, National Chung Hsing University, Taichung 402, Taiwan
- Correspondence: ; Tel.: +886-4-2285-6309
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25
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Meltretter J, Wüst J, Dittrich D, Lach J, Ludwig J, Eichler J, Pischetsrieder M. Untargeted Proteomics-Based Profiling for the Identification of Novel Processing-Induced Protein Modifications in Milk. J Proteome Res 2020; 19:805-818. [PMID: 31902209 DOI: 10.1021/acs.jproteome.9b00630] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Nonenzymatic post-translational protein modifications (nePTMs) affect the nutritional, physiological, and technological properties of proteins in food and in vivo. In contrast to the usual targeted analyses, the present study determined nePTMs in processed milk in a truly untargeted proteomic approach. Thus, it was possible to determine to which extent known nePTM structures explain protein modifications in processed milk and to detect and identify novel products. The method combined ultrahigh-performance liquid chromatography coupled to electrospray ionization tandem mass spectrometry with bioinformatic data analysis by the software XCMS. The nePTMs detected by untargeted profiling of a β-lactoglobulin-lactose model were incorporated in a sensitive scheduled multiple reaction monitoring method to analyze these modifications in milk samples and to monitor their reaction kinetics during thermal treatment. Additionally, we identified the structures of unknown modifications. Lactosylation, carboxymethylation, formylation of lysine and N-terminus, glycation of arginine, oxidation of methionine, tryptophan, and cysteine, oxidative deamination of N-terminus, and deamidation of asparagine and glutamine were the most important reactions of β-lactoglobulin during milk processing. The isomerization of aspartic acid was observed for the first time in milk products, and N-terminal 4-imidazolidinone was identified as a novel nePTM.
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Affiliation(s)
- Jasmin Meltretter
- Department of Chemistry and Pharmacy, Food Chemistry, Emil Fischer Center , Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU) , Nikolaus-Fiebiger-Str. 10 , 91058 Erlangen , Germany
| | - Johannes Wüst
- Department of Chemistry and Pharmacy, Food Chemistry, Emil Fischer Center , Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU) , Nikolaus-Fiebiger-Str. 10 , 91058 Erlangen , Germany
| | - Daniel Dittrich
- Department of Chemistry and Pharmacy, Food Chemistry, Emil Fischer Center , Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU) , Nikolaus-Fiebiger-Str. 10 , 91058 Erlangen , Germany
| | - Johannes Lach
- Department of Chemistry and Pharmacy, Medicinal Chemistry, Emil Fischer Center , Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU) , Nikolaus-Fiebiger-Str. 10 , 91058 Erlangen , Germany
| | - Jonas Ludwig
- Department of Chemistry and Pharmacy, Medicinal Chemistry, Emil Fischer Center , Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU) , Nikolaus-Fiebiger-Str. 10 , 91058 Erlangen , Germany
| | - Jutta Eichler
- Department of Chemistry and Pharmacy, Medicinal Chemistry, Emil Fischer Center , Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU) , Nikolaus-Fiebiger-Str. 10 , 91058 Erlangen , Germany
| | - Monika Pischetsrieder
- Department of Chemistry and Pharmacy, Food Chemistry, Emil Fischer Center , Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU) , Nikolaus-Fiebiger-Str. 10 , 91058 Erlangen , Germany
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26
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Mane A, McSweeney PLH. Proteolysis in Irish farmhouse Camembert cheese during ripening. J Food Biochem 2019; 44:e13101. [PMID: 31782198 DOI: 10.1111/jfbc.13101] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2019] [Revised: 10/26/2019] [Accepted: 11/01/2019] [Indexed: 01/05/2023]
Abstract
Proteolysis in an Irish farmhouse Camembert cheese was studied during 10 weeks of ripening. Urea-polyacrylamide gel electrophoresis of pH 4.6-insoluble fractions of cheese showed the degradation of caseins, initially due to the action of chymosin and plasmin and later due to Penicillium camemberti proteinases. Proteolytic specificities of Penicillium camemberti proteinases on the caseins in milk hydrolysates were determined and 64, 6, 28, and 2 cleavage sites were identified in αs1 -, αs2 -, β-, and κ-casein, respectively. Proteolysis in cheese was studied and peptides produced were determined and compared to the cleavage specificities of Penicillium camemberti proteinases. Regions most susceptible to proteolysis were 1-40, 79-114, and 168-199 in αs1 -casein; 42-79 and 97-116 in αs2 -casein; 40-57, 101-125, 143-189, and 165-209 in β-casein; and 31-81 and 124-137 in κ-casein. The present study describes in detail the proteolytic action of proteinases from Penicillium camemberti in Camembert cheese during ripening. PRACTICAL APPLICATIONS: Camembert cheese is a major international cheese variety, made in many countries around the world. The ripening of the cheese involves many biochemical changes and this study provides new information on peptides produced during ripening. Penicillium camemberti is an important mold used in the production of this type of cheese and detailed information is provided on the action of its enzymes on the caseins. Data reported in this study furthers the understanding of the ripening of Camembert cheese.
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Affiliation(s)
- Anuya Mane
- School of Food and Nutritional Sciences, University College Cork, Cork, Ireland
| | - Paul L H McSweeney
- School of Food and Nutritional Sciences, University College Cork, Cork, Ireland
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27
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Gaspar‐Pintiliescu A, Oancea A, Cotarlet M, Vasile AM, Bahrim GE, Shaposhnikov S, Craciunescu O, Oprita EI. Angiotensin‐converting enzyme inhibition, antioxidant activity and cytotoxicity of bioactive peptides from fermented bovine colostrum. INT J DAIRY TECHNOL 2019. [DOI: 10.1111/1471-0307.12659] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
| | - Anca Oancea
- National Institute of R&D for Biological Sciences 296 Splaiul Independentei Bucharest 060031 Romania
| | - Mihaela Cotarlet
- Faculty of Food Science and Engineering Dunarea de Jos University 111 Domneasca Str 800201 GalatiRomania
- Cross‐Border Faculty of Humanities, Economics and Engineering Dunarea de Jos University 47 Domneasca Str 800008 Galati Romania
| | - Aida Mihaela Vasile
- Faculty of Food Science and Engineering Dunarea de Jos University 111 Domneasca Str 800201 GalatiRomania
| | - Gabriela Elena Bahrim
- Faculty of Food Science and Engineering Dunarea de Jos University 111 Domneasca Str 800201 GalatiRomania
| | - Sergey Shaposhnikov
- NorGenoTech AS Oslo Cancer Cluster, Radiumhospitalet Ullernchausseen 64 0379 Oslo Norway
| | - Oana Craciunescu
- National Institute of R&D for Biological Sciences 296 Splaiul Independentei Bucharest 060031 Romania
| | - Elena Iulia Oprita
- National Institute of R&D for Biological Sciences 296 Splaiul Independentei Bucharest 060031 Romania
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28
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Ali E, Nielsen SD, Abd-El Aal S, El-Leboudy A, Saleh E, LaPointe G. Use of Mass Spectrometry to Profile Peptides in Whey Protein Isolate Medium Fermented by Lactobacillus helveticus LH-2 and Lactobacillus acidophilus La-5. Front Nutr 2019; 6:152. [PMID: 31681785 PMCID: PMC6803757 DOI: 10.3389/fnut.2019.00152] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2018] [Accepted: 09/06/2019] [Indexed: 11/13/2022] Open
Abstract
Peptides in the 3-kDa ultrafiltrate of fermented whey protein isolate (WPI) medium could be responsible for the antivirulence activity of Lactobacillus helveticus LH-2 and Lactobacillus acidophilus La-5 against Salmonella Typhimurium. Non-fermented and fermented media containing 5.6% WPI were fractionated at a 3 kDa cut-off and the filtrate was analyzed by mass spectrometry. The non-fermented WPI medium contained 109 milk derived peptides, which originated from β-casein (52), αs1-casein (22), αs2-casein (10), κ-casein (8), and β-lactoglobulin (17). Most of these peptides were not found in the fermented media, except for 14 peptides from β-casein and one peptide from αs2-casein. Database searches confirmed that 39 out of the 109 peptides had established physiological functions, including angiotensin-converting-enzyme (ACE) inhibitory, antioxidant, antimicrobial, or immunomodulating activity. A total of 75 peptides were found in the LH-2 cell free spent medium (CFSM): 54 from β-casein, 14 from k-casein, 4 from β-lactoglobulin and 3 from αs2-casein. From these peptides, 19 have previously been associated with several categories of bioactivity. For La-5 CFSM, a total of 15 peptides were sequenced: 8 from β-casein, 5 from αs1-casein, 2 from β-lactoglobulin. Only 5 of these have previously been reported as having bioactivity. Many of the peptides remaining in the fermented medium would contain low-affinity residues for oligopeptide binding proteins and higher resistance to peptidase hydrolysis. These properties of the sequenced peptides could explain their accumulation after fermentation despite the active proteolytic enzymes of LH-2 and La-5 strains. Down-regulated expression of hilA and ssrB genes in S. Typhimurium was observed in the presence of La-5 and LH-2 CFSM. Downregulation was not observed for the Salmonella oppA mutant strain exposed to the same CFSM used to treat the S. Typhimurium DT104 wild-type strain. This result suggests the importance of peptide transport by S. Typhimurium for down regulation of virulence genes in Salmonella.
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Affiliation(s)
- Eman Ali
- Food Hygiene Department, Faculty of Veterinary Medicine, Damanhour University, Damanhour, Egypt
- Canadian Research Institute for Food Safety, University of Guelph, Guelph, ON, Canada
| | - Søren D. Nielsen
- Department of Food Science, Faculty of Science and Technology, Aarhus University, Aarhus, Denmark
| | - Salah Abd-El Aal
- Food Control Department, Faculty of Veterinary Medicine, Zagazig University, Zagazig, Egypt
| | - Ahlam El-Leboudy
- Food Hygiene Department, Faculty of Veterinary Medicine, Alexandria University, Alexandria, Egypt
| | - Ebeed Saleh
- Food Hygiene Department, Faculty of Veterinary Medicine, Damanhour University, Damanhour, Egypt
| | - Gisèle LaPointe
- Canadian Research Institute for Food Safety, University of Guelph, Guelph, ON, Canada
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29
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Schäfer J, Schubert T, Atamer Z. Pilot-scale β-casein depletion from micellar casein via cold microfiltration in the diafiltration mode. Int Dairy J 2019. [DOI: 10.1016/j.idairyj.2019.06.009] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
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30
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Formation of whey protein isolate nanofibrils by endoproteinase GluC and their emulsifying properties. Food Hydrocoll 2019. [DOI: 10.1016/j.foodhyd.2019.03.004] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
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31
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Zhou Y, Zhang L, Yu Z, Zhang A, Wu W, Chen W, Yan X, Liu H, Hu Y, Jiang C, Xu Y, Wang X, Han S. Peptidomic analysis reveals multiple protection of human breast milk on infants during different stages. J Cell Physiol 2019; 234:15510-15526. [PMID: 30741421 DOI: 10.1002/jcp.28199] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2018] [Revised: 01/05/2019] [Accepted: 01/10/2019] [Indexed: 01/24/2023]
Abstract
It has been shown that human breast milk (HBM) is an important nutrient for the growth and development of newborns. Currently, peptide drugs provide promising regimes in neonatal disease treatment, especially peptides from HBM that exhibit multiple functions within cells. To explore the potential biological function peptides among the colostrum, transition and mature milk from mother of extremely low birth weight children (the samples were collected from Women's Hospital of Nanjing Medical University from December 2016 to February 2017). A total of 3,182 nonredundant peptides were identified and compared among colostrum, transitional and mature milk using liquid chromatography/mass spectrometry technology, and the numbers and fragments of peptides were various. The isoelectric point and molecular weight analysis of the differentially expressed peptides basically accord with the range of mass spectrometry identification (<3 kDa). Gene Ontology analysis and Pathway analysis, restriction sites analysis, as well as bioinformatics analysis showed that these differentially expressed peptides enriched a variety of biological processes. We identified several putative peptides that might have bioactive effects in diseases and development of newborns, which will inform further functional investigations. Our preliminary research provided a better understanding of the function of peptides during the newborn periods. Furthermore, it laid a foundation for discovering new peptide drugs in neonatal disease treatment.
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Affiliation(s)
- Yahui Zhou
- Department of Pediatrics, Women's Hospital of Nanjing Medical University, Nanjing Maternity and Child Health Care Hospital, Nanjing, China.,Institute of pediatrics, Fourth Clinical Medicine College, Nanjing Medical University, Nanjing, China.,Department of Pediatrics, Fourth Clinical Medicine College, Nanjing Medical University, Nanjing, China
| | - Le Zhang
- Department of Pediatrics, Women's Hospital of Nanjing Medical University, Nanjing Maternity and Child Health Care Hospital, Nanjing, China.,Institute of pediatrics, Fourth Clinical Medicine College, Nanjing Medical University, Nanjing, China.,Department of Neonatology, Wuxi Children's Hospital affiliated to Nanjing Medical University, Wuxi, China
| | - Zhangbin Yu
- Department of Pediatrics, Women's Hospital of Nanjing Medical University, Nanjing Maternity and Child Health Care Hospital, Nanjing, China
| | - Aiqing Zhang
- Department of Pediatric Nephrology, The Second Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Weimin Wu
- Department of Pediatrics, Women's Hospital of Nanjing Medical University, Nanjing Maternity and Child Health Care Hospital, Nanjing, China
| | - Wenjuan Chen
- Department of Pediatrics, Women's Hospital of Nanjing Medical University, Nanjing Maternity and Child Health Care Hospital, Nanjing, China.,Institute of pediatrics, Fourth Clinical Medicine College, Nanjing Medical University, Nanjing, China.,Department of Pediatrics, Fourth Clinical Medicine College, Nanjing Medical University, Nanjing, China
| | - Xiangyun Yan
- Department of Pediatrics, Women's Hospital of Nanjing Medical University, Nanjing Maternity and Child Health Care Hospital, Nanjing, China.,Institute of pediatrics, Fourth Clinical Medicine College, Nanjing Medical University, Nanjing, China.,Department of Pediatrics, Fourth Clinical Medicine College, Nanjing Medical University, Nanjing, China
| | - Heng Liu
- Department of Pediatrics, Women's Hospital of Nanjing Medical University, Nanjing Maternity and Child Health Care Hospital, Nanjing, China.,Institute of pediatrics, Fourth Clinical Medicine College, Nanjing Medical University, Nanjing, China.,Department of Pediatrics, Fourth Clinical Medicine College, Nanjing Medical University, Nanjing, China
| | - Yin Hu
- Department of Pediatrics, Women's Hospital of Nanjing Medical University, Nanjing Maternity and Child Health Care Hospital, Nanjing, China.,Institute of pediatrics, Fourth Clinical Medicine College, Nanjing Medical University, Nanjing, China.,Department of Pediatrics, Fourth Clinical Medicine College, Nanjing Medical University, Nanjing, China
| | - Chengyao Jiang
- Department of Pediatrics, Women's Hospital of Nanjing Medical University, Nanjing Maternity and Child Health Care Hospital, Nanjing, China.,Institute of pediatrics, Fourth Clinical Medicine College, Nanjing Medical University, Nanjing, China.,Department of Pediatrics, Fourth Clinical Medicine College, Nanjing Medical University, Nanjing, China
| | - Yan Xu
- Department of Pediatrics, Women's Hospital of Nanjing Medical University, Nanjing Maternity and Child Health Care Hospital, Nanjing, China.,Department of Pediatrics, The Affiliated Hospital of Xuzhou Medical University, Xuzhou, China
| | - Xingyun Wang
- Department of Pediatrics, Women's Hospital of Nanjing Medical University, Nanjing Maternity and Child Health Care Hospital, Nanjing, China
| | - Shuping Han
- Department of Pediatrics, Women's Hospital of Nanjing Medical University, Nanjing Maternity and Child Health Care Hospital, Nanjing, China
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32
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Hale O, Morris M, Jones B, Reynolds CK, Cramer R. Liquid Atmospheric Pressure Matrix-Assisted Laser Desorption/Ionization Mass Spectrometry Adds Enhanced Functionalities to MALDI MS Profiling for Disease Diagnostics. ACS OMEGA 2019; 4:12759-12765. [PMID: 31460399 PMCID: PMC6681994 DOI: 10.1021/acsomega.9b01476] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/21/2019] [Accepted: 07/15/2019] [Indexed: 05/08/2023]
Abstract
A liquid matrix-assisted laser desorption/ionization (liquid MALDI) method has been developed for high-throughput atmospheric pressure (AP) mass spectrometry (MS) analysis of the molecular content of crude bioliquids for disease diagnostics. The presented method is rapid and highly robust, enabling its application in environments where speed and low-cost high-throughput analyses are required. Importantly, because of the creation of multiply charged analyte ions, it provides additional functionalities that conventional solid MALDI MS profiling is lacking, including the use of high-performance mass analyzers with limited m/z range. The concomitant superior MS/MS performance that is achieved similar to ESI MS/MS adds greater analytical power and specificity to MALDI MS profiling while retaining the advantages of a fast laser-based analysis system and off-line large-scale sample preparation. The potential of this MALDI MS profiling method is demonstrated on the detection of dairy cow mastitis, which is a substantial economic burden on the dairy industry with losses of hundreds of dollars per diseased cow per year, equating to a total annual loss of billions of dollars, as well as leading to the use of large quantities of antibiotics, adding to the proliferation of antimicrobial resistance. Only small amounts of aliquots obtained from the daily farm milking process were prepared for liquid MALDI MS profiling using a simple one-pot/two-step analyte extraction. Automated analysis was performed using a custom-built AP-MALDI ion source, enabling the simultaneous detection of lipids, peptides, and proteins. Diagnostic, multiply charged, proteinaceous ions were easily sequenced and identified by MS/MS experiments. Samples were classified according to mastitis status using multivariate analysis, achieving 98.5% accuracy (100% specificity) determined by "leave 20% out" cross-validation. The methodology is generally applicable to AP-MALDI MS profiling on most commercial high-resolution mass spectrometers, with the potential for expansion into hospitals for rapid assessment of human and other biofluids.
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Affiliation(s)
- Oliver
J. Hale
- Department
of Chemistry, University of Reading, Whiteknights, Reading RG6 6AD, U.K.
| | - Michael Morris
- Waters
Corporation, Stamford Avenue, Wilmslow SK9 4AX, U.K.
| | - Barney Jones
- The
Centre for Dairy Research, School of Agriculture, Policy and Development, University of Reading, Reading RG2 9HX, U.K.
| | - Christopher K. Reynolds
- The
Centre for Dairy Research, School of Agriculture, Policy and Development, University of Reading, Reading RG2 9HX, U.K.
| | - Rainer Cramer
- Department
of Chemistry, University of Reading, Whiteknights, Reading RG6 6AD, U.K.
- E-mail:
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33
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Dalabasmaz S, Dittrich D, Kellner I, Drewello T, Pischetsrieder M. Identification of peptides reflecting the storage of UHT milk by MALDI-TOF-MS peptide profiling. J Proteomics 2019; 207:103444. [PMID: 31323422 DOI: 10.1016/j.jprot.2019.103444] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2019] [Revised: 05/16/2019] [Accepted: 07/11/2019] [Indexed: 10/26/2022]
Abstract
Proteolysis during the storage of UHT milk is associated with major technological problems, particularly bitter off-flavors and age gelation limiting the shelf life of milk. In this study, untargeted peptide profiling by MALDI-TOF-MS identified peptides that were formed by proteolysis and reflected the storage of UHT milk. Analysis of nine different commercial UHT samples recorded peptide profiles during and at the end of their shelf life. Relative quantification and sequencing of the peptides revealed that the concentrations of 22 peptides increased significantly during the storage of UHT milk due to the activity of endogenous milk proteases and microbial proteases as well as other unidentified proteolytic mechanisms. Based on highly discriminative AUC values from receiver operator characteristic (ROC) curve analysis, we selected ten peptides as marker candidates. Among those, the peptide β-casein192-206 (m/z 1668.9) was the most suitable marker differentiating expired-UHT from regular-UHT samples with 100% accuracy. Additionally, β-casein191-206 (m/z 1782.0) showed 100% specificity and β-casein139-161 (m/z 2696.4) 100% sensitivity. Thus, β-casein192-206, either by itself or in combination with β-casein191-206 and β-casein139-161, presents a reliable marker to monitor the storage of UHT milk based on proteolytic mechanisms. SIGNIFICANCE: Enzymatic hydrolysis is the main reason why processed milk spoils during storage. The present study recorded peptide profiles to monitor the release or degradation of peptides in stored UHT milk. Among the detected peptides, statistical analysis revealed that the relative concentration of β-casein192-206 reflected those proteolytic processes most precisely. Food authorities can now refer to β-casein192-206 as a reliable marker to differentiate between freshly processed milk and products at the end of their shelf life. Furthermore, the food industry can use this marker peptide to improve production processes by monitoring the proteolysis during storage. The recorded peptide profile helps to explain the basic mechanisms leading to storage-induced proteolysis.
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Affiliation(s)
- Sevim Dalabasmaz
- Food Chemistry, Department of Chemistry and Pharmacy, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Nikolaus-Fiebiger-Straße 10, 91058 Erlangen, Germany
| | - Daniel Dittrich
- Food Chemistry, Department of Chemistry and Pharmacy, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Nikolaus-Fiebiger-Straße 10, 91058 Erlangen, Germany
| | - Ina Kellner
- Physical Chemistry I, Department of Chemistry and Pharmacy, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Egerlandstraße 3, 91058 Erlangen, Germany
| | - Thomas Drewello
- Physical Chemistry I, Department of Chemistry and Pharmacy, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Egerlandstraße 3, 91058 Erlangen, Germany
| | - Monika Pischetsrieder
- Food Chemistry, Department of Chemistry and Pharmacy, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Nikolaus-Fiebiger-Straße 10, 91058 Erlangen, Germany.
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34
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Liu R, Zhu Z, Qian D, Duan JA. Comparison of the peptidome released from keratins in Saiga antelope horn and goat horn under simulated gastrointestinal digestion. Electrophoresis 2019; 40:2759-2766. [PMID: 31162671 DOI: 10.1002/elps.201900078] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2019] [Revised: 05/23/2019] [Accepted: 05/28/2019] [Indexed: 11/07/2022]
Abstract
Goat horn (Caprae Hircus Cornu, GH) has been used as a substitute for Saiga antelope horn (Saigae Tataricae Cornu, SAH) in the clinic and the pharmaceutical industry. In the present study, peptides released from SAH and GH under simulated gastric and intestinal digestion were identified. The results showed that most of the peptides released from SAH and GH under simulated gastrointestinal digestion were hydrophilic, and over 75% of the peptides from keratins (KRTs) were hydrophilic. In total, over 58% of the identified peptides were released from KRTs, and were from the four main regions of KRTs. The peptide features and the peptide release profiles from KRTs in SAH and GH were similar, which may provide a method for the identification of sustainable alternatives to replace the threatened SAH, and provide further evidence of the feasibility of using GH as a replacement for SAH based on their peptidomic analysis.
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Affiliation(s)
- Rui Liu
- Jiangsu Collaborative Innovation Center of Chinese Medicinal Resources Industrialization, and National and Local Collaborative Engineering Center of Chinese Medicinal Resources Industrialization and Formulae Innovative Medicine, Nanjing, P. R. China
- Jiangsu Key Laboratory of Research and Development in Marine Bio-resource Pharmaceutics, Nanjing University of Chinese Medicine, Nanjing, P. R. China
- School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, P. R. China
| | - Zhenhua Zhu
- Jiangsu Collaborative Innovation Center of Chinese Medicinal Resources Industrialization, and National and Local Collaborative Engineering Center of Chinese Medicinal Resources Industrialization and Formulae Innovative Medicine, Nanjing, P. R. China
- School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, P. R. China
| | - Dawei Qian
- Jiangsu Collaborative Innovation Center of Chinese Medicinal Resources Industrialization, and National and Local Collaborative Engineering Center of Chinese Medicinal Resources Industrialization and Formulae Innovative Medicine, Nanjing, P. R. China
- School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, P. R. China
| | - Jin-Ao Duan
- Jiangsu Collaborative Innovation Center of Chinese Medicinal Resources Industrialization, and National and Local Collaborative Engineering Center of Chinese Medicinal Resources Industrialization and Formulae Innovative Medicine, Nanjing, P. R. China
- School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, P. R. China
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35
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Fan M, Guo T, Li W, Chen J, Li F, Wang C, Shi Y, Li DXA, Zhang S. Isolation and identification of novel casein-derived bioactive peptides and potential functions in fermented casein with Lactobacillus helveticus. FOOD SCIENCE AND HUMAN WELLNESS 2019. [DOI: 10.1016/j.fshw.2019.03.010] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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36
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Identification of bioactive short peptides in cow milk by high-performance liquid chromatography on C18 and porous graphitic carbon coupled to high-resolution mass spectrometry. Anal Bioanal Chem 2019; 411:3395-3404. [DOI: 10.1007/s00216-019-01815-0] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2019] [Revised: 03/15/2019] [Accepted: 03/27/2019] [Indexed: 12/24/2022]
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37
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Mercurio FA, Scaloni A, Caira S, Leone M. The antimicrobial peptides casocidins I and II: Solution structural studies in water and different membrane-mimetic environments. Peptides 2019; 114:50-58. [PMID: 30243923 DOI: 10.1016/j.peptides.2018.09.004] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/08/2018] [Revised: 09/18/2018] [Accepted: 09/18/2018] [Indexed: 10/28/2022]
Abstract
Antimicrobial peptides (AMPs) represent crucial components of the natural immune defense machinery of different organisms. Generally, they are short and positively charged, and bind to and destabilize bacterial cytoplasmic membranes, ultimately leading to cell death. Natural proteolytic cleavage of αs2-casein in bovine milk generates the antimicrobial peptides casocidin I and II. In the current study, we report for the first time on a detailed structure characterization of casocidins in solution by means of Nuclear Magnetic Resonance spectroscopy (NMR). Structural studies were conducted in H2O and different membrane mimetic environments, including 2,2,2-trifluoroethanol (TFE) and lipid anionic and zwitterionic vesicles. For both peptides, results indicate a mainly disordered conformation in H2O, with a few residues in a partial helical structure. No wide increase of order occurs upon interaction with lipid vesicles. Conversely, peptide conformation becomes highly ordered in presence of TFE, with both casocidins presenting a large helical content. Our data point out a preference of casocidins to interact with model anionic membranes. These results are compatible with possible mechanisms of action underlying the antimicrobial activity of casocidins that ultimately may affect membrane bilayer stability.
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Affiliation(s)
- Flavia Anna Mercurio
- Institute of Biostructures and Bioimaging (IBB), National Research Council & Interuniversity Research Centre on Bioactive Peptides (CIRPEB), Via Mezzocannone 16, 80134 Naples, Italy
| | - Andrea Scaloni
- Proteomics & Mass Spectrometry Laboratory, ISPAAM, National Research Council, Via Argine 1085, 80147 Naples, Italy
| | - Simonetta Caira
- Proteomics & Mass Spectrometry Laboratory, ISPAAM, National Research Council, Via Argine 1085, 80147 Naples, Italy
| | - Marilisa Leone
- Institute of Biostructures and Bioimaging (IBB), National Research Council & Interuniversity Research Centre on Bioactive Peptides (CIRPEB), Via Mezzocannone 16, 80134 Naples, Italy.
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Zänker H, Heine K, Weiss S, Brendler V, Husar R, Bernhard G, Gloe K, Henle T, Barkleit A. Strong Uranium(VI) Binding onto Bovine Milk Proteins, Selected Protein Sequences, and Model Peptides. Inorg Chem 2019; 58:4173-4189. [PMID: 30860361 DOI: 10.1021/acs.inorgchem.8b03231] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Hexavalent uranium is ubiquitous in the environment. In view of the chemical and radiochemical toxicity of uranium(VI), a good knowledge of its possible interactions in the environment is crucial. The aim of this work was to identify typical binding and sorption characteristics of uranium(VI) with both the pure bovine milk protein β-casein and diverse related protein mixtures (caseins, whey proteins). For comparison, selected model peptides representing the amino acid sequence 13-16 of β-casein and dephosphorylated β-casein were also studied. Complexation studies using potentiometric titration and time-resolved laser-induced fluorescence spectroscopy revealed that the phosphoryl-containing proteins form uranium(VI) complexes of higher stability than the structure-analog phosphoryl-free proteins. That is in agreement with the sorption experiments showing a significantly higher affinity of caseins toward uranium(VI) in comparison to whey proteins. On the other hand, the total sorption capacity of caseins is lower than that of whey proteins. The discussed binding behavior of milk proteins to uranium(VI) might open up interesting perspectives for sustainable techniques of uranium(VI) removal from aqueous solutions. This was further demonstrated by batch experiments on the removal of uranium(VI) from mineral water samples.
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Affiliation(s)
- Harald Zänker
- Institute of Resource Ecology , Helmholtz-Zentrum Dresden-Rossendorf , Bautzner Landstraße 400 , 01328 Dresden , Germany
| | - Katja Heine
- Institute of Resource Ecology , Helmholtz-Zentrum Dresden-Rossendorf , Bautzner Landstraße 400 , 01328 Dresden , Germany.,Faculty of Chemistry and Food Chemistry , Technische Universität Dresden , 01062 Dresden , Germany
| | - Stephan Weiss
- Institute of Resource Ecology , Helmholtz-Zentrum Dresden-Rossendorf , Bautzner Landstraße 400 , 01328 Dresden , Germany
| | - Vinzenz Brendler
- Institute of Resource Ecology , Helmholtz-Zentrum Dresden-Rossendorf , Bautzner Landstraße 400 , 01328 Dresden , Germany
| | - Richard Husar
- Institute of Resource Ecology , Helmholtz-Zentrum Dresden-Rossendorf , Bautzner Landstraße 400 , 01328 Dresden , Germany
| | - Gert Bernhard
- Institute of Resource Ecology , Helmholtz-Zentrum Dresden-Rossendorf , Bautzner Landstraße 400 , 01328 Dresden , Germany
| | - Karsten Gloe
- Faculty of Chemistry and Food Chemistry , Technische Universität Dresden , 01062 Dresden , Germany
| | - Thomas Henle
- Faculty of Chemistry and Food Chemistry , Technische Universität Dresden , 01062 Dresden , Germany
| | - Astrid Barkleit
- Institute of Resource Ecology , Helmholtz-Zentrum Dresden-Rossendorf , Bautzner Landstraße 400 , 01328 Dresden , Germany
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Dalabasmaz S, Pischetsrieder M. Design of a Prediction Model for the Differentiation of Pasteurized Milk from Heated ESL Milk by Peptide Profiling. Proteomics 2019; 19:e1800292. [DOI: 10.1002/pmic.201800292] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2018] [Revised: 02/12/2019] [Indexed: 11/08/2022]
Affiliation(s)
- Sevim Dalabasmaz
- Friedrich Emil Fischer CenterFood ChemistryDepartment of Chemistry and PharmacyAlexander UniversitätErlangen‐Nürnberg 91058 Erlangen Germany
| | - Monika Pischetsrieder
- Friedrich Emil Fischer CenterFood ChemistryDepartment of Chemistry and PharmacyAlexander UniversitätErlangen‐Nürnberg 91058 Erlangen Germany
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Significance of the Differential Peptidome in Multidrug-Resistant Tuberculosis. BIOMED RESEARCH INTERNATIONAL 2019; 2019:5653424. [PMID: 30792993 PMCID: PMC6354167 DOI: 10.1155/2019/5653424] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/27/2018] [Revised: 12/21/2018] [Accepted: 01/03/2019] [Indexed: 12/23/2022]
Abstract
Most multidrug-resistant tuberculosis (MDR-TB) patients fail to receive a timely diagnosis and treatment. Therefore, we explored the differentially expressed peptides in MDR-TB compared with drug-susceptible tuberculosis (DS-TB) patients using LC-MS/MS and Ingenuity Pathway Analysis (IPA) to analyse the potential significance of these differentially expressed peptides. A total of 301 peptides were differentially expressed between MDR-TB and DS-TB groups. Of these, 24 and 16 peptides exhibited presented high (fold change ≥ 2.0, P < 0.05) and low (fold change ≤ −2.0, P < 0.05) levels in MDR-TB. Significant canonical pathways included the prothrombin activation system, coagulation system, and complement system. In the network of differentially expressed precursor proteins, lipopolysaccharide (LPS) regulates many precursor proteins, including four proteins correlated with organism survival. These four important differentially expressed proteins are prothrombin (F2), complement receptor type 2 (CR2), collagen alpha-2(V) chain (COL5A2), and inter-alpha-trypsin inhibitor heavy chain H4 (ITIH4). After addition of CR2 peptide, IL-6 mRNA expression in THP-1 cells decreased significantly in dose- and time-dependent manners. Cumulatively, our study proposes potential biomarkers for MDR-TB diagnosis and enables a better understanding of the pathogenesis of MDR-TB. The functions of differentially expressed peptides, especially CR2, in MDR-TB require further investigation.
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Sebald K, Dunkel A, Schäfer J, Hinrichs J, Hofmann T. Sensoproteomics: A New Approach for the Identification of Taste-Active Peptides in Fermented Foods. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2018; 66:11092-11104. [PMID: 30289254 DOI: 10.1021/acs.jafc.8b04479] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
Aiming at the identification of the key bitter peptides in fermented foods, a new approach, coined "sensoproteomics", was developed and applied to fresh cheese samples differing in bitter taste intensity. By means of MPLC fractionation of the water-soluble cheese extracts in combination with taste dilution analysis, complex fractions with intense bitter taste were located and then screened by UPLC-MS/MS for the entire repertoire of ∼1600 candidate peptides, extracted from a literature meta-analysis on dairy products, by using a total of 120 selected reaction monitoring methods computed in silico. A total of 340 out of the 1600 peptides were found in the cheese samples, among which 17 peptides were identified as candidate bitter peptides by considering only peptides that were located in the bitter-tasting MPLC fractions (signal-to-noise ratio: ≥10) with a fold-change of ≥3 when comparing the less bitter to the more bitter cheese sample and that were validated by comparison with the synthetic reference peptides. While EIVPNS[phos]VEQK (αs1-CN70-78) and INTIASGEPT (κ-CN122-131) did not exhibit any bitter taste up to 2000 μmol/L, 15 of the 17 target peptides showed bitter taste thresholds ranging from 30 (ARHPHPHLSFM, κ-CN96-106) to 690 μmol/L (IQKEDVPS, αs1-CN81-88). Finally, quantitative peptide analysis followed by calculation of dose-overthreshold factors revealed a primary contribution of MAPKHKEMPFPKYPVEPF (β-CN102-119) and ARHPHPHLSFM (κ-CN96-106) to the perceived bitter taste of the fresh cheese samples. Finally, the evolution of the bitter peptides throughout two different fresh cheese manufacturing processes was quantitatively recorded.
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Affiliation(s)
| | | | - Johannes Schäfer
- Institute of Food Science and Biotechnology, Department of Soft Matter Science and Dairy Technology , University of Hohenheim , Garbenstrasse 21 , D-70599 Stuttgart , Germany
| | - Jörg Hinrichs
- Institute of Food Science and Biotechnology, Department of Soft Matter Science and Dairy Technology , University of Hohenheim , Garbenstrasse 21 , D-70599 Stuttgart , Germany
| | - Thomas Hofmann
- Bavarian Center for Biomolecular Mass Spectrometry , Technical University of Munich , Gregor-Mendel-Strasse 4 , D-85354 Freising , Germany
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Becucci L, Aloisi G, Scaloni A, Caira S, Guidelli R. On the interaction of the highly charged peptides casocidins with biomimetic membranes. Bioelectrochemistry 2018; 123:1-8. [PMID: 29715585 DOI: 10.1016/j.bioelechem.2018.04.012] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2018] [Revised: 04/12/2018] [Accepted: 04/17/2018] [Indexed: 11/16/2022]
Abstract
Casocidin I and II (CI and CII) are structurally related antimicrobial peptides made of 39 and 31 amino acids, respectively, which derive from natural proteolytic processing of αs2-casein and adopt an ordered α-helical structure in biomimetic membranes. Their putative membrane-permeabilizing activity was investigated at Hg-supported self-assembled monolayers (SAMs) and at tethered bilayer lipid membranes (tBLMs); the latter consisted of a monolayer of 2,3,di-O-phytanyl-sn-glycerol-1-tetraethylene-glycol-d,l-α lipoic acid ester thiolipid (DPTL), with a dioleoylphosphatidylcholine (DOPC) or dioleoylphosphatidylserine (DOPS) monolayer on top of it. Interaction of CI and CII with these biomimetic membranes was studied by four electrochemical techniques at pH 3, 5.4 and 6.8. Peptide incorporation in tBLMs was attempted via scans of electrochemical impedance spectra. Experiments demonstrated that CI and CII penetrate SAMs as well as the distal DOPC monolayer of DPTL/DOPC tBLMs, but not the proximal phytanyl monolayer, with the only exception of CII at pH 5.4. Conversely, CII permeabilized DPTL/DOPS tBLMs to a moderate extent at all investigated pH values by forming holes across the membrane, but not ion channels. Structural distribution of charged residues seemed to prevent CII from having a hydrophobic side of the α-helix capable of stabilizing a regular ion channel in the lipid matrix.
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Affiliation(s)
- Lucia Becucci
- Department of Chemistry, Florence University, via della Lastruccia 3, 50019 Sesto Fiorentino, Firenze, Italy; 1st Grade Secondary School "Giuseppe Pescetti", Via Gramsci 390, 50019 Sesto Fiorentino, Firenze, Italy.
| | - Giovanni Aloisi
- Department of Chemistry, Florence University, via della Lastruccia 3, 50019 Sesto Fiorentino, Firenze, Italy
| | - Andrea Scaloni
- Proteomics & Mass Spectrometry Laboratory, ISPAAM-National Research Council, 80147 Naples, Italy
| | - Simonetta Caira
- Proteomics & Mass Spectrometry Laboratory, ISPAAM-National Research Council, 80147 Naples, Italy
| | - Rolando Guidelli
- Department of Chemistry, Florence University, via della Lastruccia 3, 50019 Sesto Fiorentino, Firenze, Italy
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Cui X, Li Y, Yang L, You L, Wang X, Shi C, Ji C, Guo X. Peptidome analysis of human milk from women delivering macrosomic fetuses reveals multiple means of protection for infants. Oncotarget 2018; 7:63514-63525. [PMID: 27566575 PMCID: PMC5325381 DOI: 10.18632/oncotarget.11532] [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: 06/01/2016] [Accepted: 08/13/2016] [Indexed: 01/11/2023] Open
Abstract
Breastfeeding is associated with a lower incidence of obesity, diabetes, and cardiovascular disease later in life. While macrosomic infants have a higher risk of developing obesity and other metabolic disorders. Breast milk may contain special nutrients to meet the different growth needs of different infants. Whether mothers make breast milk different to meet the requirement of macrosomic infants is still unknown. Here, we conducted a comparison between mothers delivering macrosomic and non-macrosomic infants in colostrum endogenous peptides. More than 400 peptides, originating from at least 34 protein precursors, were identified by Liquid Chromatography/Mass Spectrometry (LC/MS). Out of these, 29 peptides found to be significant differently expressed (|fold change| ≥ 3, P < 0.01). Blastp analysis revealed 41 peptides may have established biological activities, which exhibit immunomodulating, antibacterial action, antioxidation, opioid agonist and antihypertensive activity. Furthermore, we found that peptide located at β-Casein 24-38 AA has antimicrobial effect against E. coli, Y. enterocolitica and S. aureus. While, κ-Casein 89-109 AA-derived peptide plays as a regulator of preadipocyte proliferation. The profile of endogenous peptides from macrosomic term infants is different from non-macrosomic terms. This different peptide expression potentially has specific physiological function to benefit macrosomic infants. Finally, we believe that our research is a meaningfull finding which may add to the understanding of milk peptide physiological action.
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Affiliation(s)
- Xianwei Cui
- From Nanjing Maternal and Child Health Medical Institute, Nanjing Medical University Affiliated Nanjing Maternal and Child Health Hospital
| | - Yun Li
- From Nanjing Maternal and Child Health Medical Institute, Nanjing Medical University Affiliated Nanjing Maternal and Child Health Hospital
| | - Lei Yang
- From Nanjing Maternal and Child Health Medical Institute, Nanjing Medical University Affiliated Nanjing Maternal and Child Health Hospital
| | - Lianghui You
- From Nanjing Maternal and Child Health Medical Institute, Nanjing Medical University Affiliated Nanjing Maternal and Child Health Hospital
| | - Xing Wang
- From Nanjing Maternal and Child Health Medical Institute, Nanjing Medical University Affiliated Nanjing Maternal and Child Health Hospital
| | - Chunmei Shi
- From Nanjing Maternal and Child Health Medical Institute, Nanjing Medical University Affiliated Nanjing Maternal and Child Health Hospital
| | - Chenbo Ji
- From Nanjing Maternal and Child Health Medical Institute, Nanjing Medical University Affiliated Nanjing Maternal and Child Health Hospital
| | - Xirong Guo
- From Nanjing Maternal and Child Health Medical Institute, Nanjing Medical University Affiliated Nanjing Maternal and Child Health Hospital
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Analysis of hard protein corona composition on selective iron oxide nanoparticles by MALDI-TOF mass spectrometry: identification and amplification of a hidden mastitis biomarker in milk proteome. Anal Bioanal Chem 2018. [DOI: 10.1007/s00216-018-0976-z] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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Abstract
Peptidomics is the comprehensive characterization of peptides from biological sources mainly by HPLC and mass spectrometry. Mass spectrometry allows the detection of a multitude of single peptides in complex mixtures. The term first appeared in full papers in the year 2001, after over 100 years of peptide research with a main focus on one or a few specific peptides. Within the last 15 years, this new field has grown to over 1200 publications. Mass spectrometry techniques, in combination with other analytical methods, were developed for the fast and comprehensive analysis of peptides in proteomics and specifically adjusted to implement peptidomics technologies. Although peptidomics is closely linked to proteomics, there are fundamental differences with conventional bottom-up proteomics. The development of peptidomics is described, including the most important implementations for its technological basis. Different strategies are covered which are applied to several important applications, such as neuropeptidomics and discovery of bioactive peptides or biomarkers. This overview includes links to all other chapters in the book as well as recent developments of separation, mass spectrometric, and data processing technologies. Additionally, some new applications in food and plant peptidomics as well as immunopeptidomics are introduced.
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Dalabasmaz S, Ebner J, Pischetsrieder M. Identification of the Peptide PyroQ-βCasein 194-209 as a Highly Specific and Sensitive Marker to Differentiate between Ultrahigh-Temperature Processed (UHT) Milk and Mildly Heated Milk. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2017; 65:10781-10791. [PMID: 29148742 DOI: 10.1021/acs.jafc.7b03801] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
In this study, a new approach was introduced to identify marker peptides that reflect the thermal treatment of commercial milk samples and differentiate ultrahigh-temperature processed (UHT) milk from mildly heated milk. Peptide profiles of training set samples, pasteurized (n = 20), extended shelf life (n = 29), and UHT (n = 29) milk, were recorded by MALDI-TOF-MS after StageTip microextraction. As marker candidates, 13 peptides were selected, and their cutoff levels were defined. The quality of the cutoff levels was then tested with a blind test set. Thus, the peptide m/z 1701.0, which was identified as pyroQ-βcasein194-209, could ideally differentiate UHT milk from mildly heated milk with an accuracy of 100%. Due to its high reliability and sensitivity, this peptide may be applied in routine analysis to monitor thermal processing of milk. An additional heating experiment showed that the marker peptide candidates are formed during milk processing by endogenous enzymes and selective thermal cleavage.
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Affiliation(s)
- Sevim Dalabasmaz
- Food Chemistry Unit, Department of Chemistry and Pharmacy, Emil Fischer Center, Friedrich-Alexander Universität Erlangen-Nürnberg (FAU) , Nikolaus-Fiebiger-Str. 10, 91058 Erlangen, Germany
| | - Jennifer Ebner
- Food Chemistry Unit, Department of Chemistry and Pharmacy, Emil Fischer Center, Friedrich-Alexander Universität Erlangen-Nürnberg (FAU) , Nikolaus-Fiebiger-Str. 10, 91058 Erlangen, Germany
| | - Monika Pischetsrieder
- Food Chemistry Unit, Department of Chemistry and Pharmacy, Emil Fischer Center, Friedrich-Alexander Universität Erlangen-Nürnberg (FAU) , Nikolaus-Fiebiger-Str. 10, 91058 Erlangen, Germany
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Bioactive Peptides in Milk: From Encrypted Sequences to Nutraceutical Aspects. BEVERAGES 2017. [DOI: 10.3390/beverages3030041] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Proteins and bioactive peptides from donkey milk: The molecular basis for its reduced allergenic properties. Food Res Int 2017; 99:41-57. [PMID: 28784499 DOI: 10.1016/j.foodres.2017.07.002] [Citation(s) in RCA: 42] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2017] [Revised: 06/29/2017] [Accepted: 07/02/2017] [Indexed: 12/18/2022]
Abstract
The legendary therapeutics properties of donkey milk have recently been supported by many clinical trials who have clearly demonstrated that, even if with adequate lipid integration, it may represent a valid natural substitute of cow milk for feeding allergic children. During the last decade many investigations by MS-based methods have been performed in order to obtain a better knowledge of donkey milk proteins. The knowledge about the primary structure of donkey milk proteins now may provide the basis for a more accurate comprehension of its potential benefits for human nutrition. In this aspect, experimental data today available clearly demonstrate that donkey milk proteins (especially casein components) are more closely related with the human homologues rather than cow counterparts. Moreover, the low allergenic properties of donkey milk with respect to cow one seem to be related to the low total protein content, the low ratio of caseins to whey fraction, and finally to the presence in almost all bovine IgE-binding linear epitopes of multiple amino acid differences with respect to the corresponding regions of donkey milk counterparts.
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Oh NS, Joung JY, Lee JY, Kim Y, Kim SH. Enhancement of Antioxidative and Intestinal Anti-inflammatory Activities of Glycated Milk Casein after Fermentation with Lactobacillus rhamnosus 4B15. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2017; 65:4744-4754. [PMID: 28510450 DOI: 10.1021/acs.jafc.7b01339] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
In this study, we investigated the glycoproteomics of glycated milk casein (GMC) and GMC fermented by Lactobacillus rhamnosus 4B15 (FGMC) and determined their biological implications. There was a significant increase in the antioxidative and anti-inflammatory activities of GMC with galactose, which were higher than those of GMC with glucose (GMC-glc). Furthermore, the fermentation of GMC by L. rhamnosus 4B15 synergistically enhanced the above activities compared to those of unfermented GMC. Especially, fermented GMC-glc (FGMC-glc) possessed remarkably improved reducing power and radical scavenging activities. Moreover, FGMC-glc ameliorated the inflammatory response and tight junction-related intestinal epithelial dysfunction. Additionally, hexose-derived glycation and modification sites in protein sequences of GMC were identified. In particular, glycosylation and sulfation of serine and threonine residues were observed, and distinct modification sites were detected after fermentation. Therefore, these results indicated that glycation-induced modification of casein and fermentation correlated strongly with the enhanced functional properties.
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Affiliation(s)
- Nam Su Oh
- R&D Center, Seoul Dairy Cooperative , Ansan, Kyunggi 15407, South Korea
| | - Jae Yeon Joung
- R&D Center, Seoul Dairy Cooperative , Ansan, Kyunggi 15407, South Korea
- Department of Biotechnology, College of Life Sciences and Biotechnology, Korea University , Seoul 02841, South Korea
| | - Ji Young Lee
- R&D Center, Seoul Dairy Cooperative , Ansan, Kyunggi 15407, South Korea
- Department of Biotechnology, College of Life Sciences and Biotechnology, Korea University , Seoul 02841, South Korea
| | - Younghoon Kim
- Department of Animal Science and Institute of Milk Genomics, Chonbuk National University , Jeonju 54896, South Korea
| | - Sae Hun Kim
- Department of Biotechnology, College of Life Sciences and Biotechnology, Korea University , Seoul 02841, South Korea
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Liu Y, Pischetsrieder M. Identification and Relative Quantification of Bioactive Peptides Sequentially Released during Simulated Gastrointestinal Digestion of Commercial Kefir. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2017; 65:1865-1873. [PMID: 28195465 DOI: 10.1021/acs.jafc.6b05385] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Health-promoting effects of kefir may be partially caused by bioactive peptides. To evaluate their formation or degradation during gastrointestinal digestion, we monitored changes of the peptide profile in a model of (1) oral, (2) gastric, and (3) small intestinal digestion of kefir. Matrix-assisted laser desorption/ionization time-of-flight mass spectroscopy analyses revealed clearly different profiles between digests 2/3 and kefir/digest 1. Subsequent ultraperformance liquid chromatography-electrospray ionization-tandem mass spectrometry identified 92 peptides in total (25, 25, 43, and 30, partly overlapping in kefir and digests 1, 2, and 3, respectively), including 16 peptides with ascribed bioactivity. Relative quantification in scheduled multiple reaction monitoring mode showed that many bioactive peptides were released by simulated digestion. Most prominently, the concentration of angiotensin-converting enzyme inhibitor β-casein203-209 increased approximately 10 000-fold after combined oral, gastric, and intestinal digestion. Thus, physiological digestive processes may promote bioactive peptide formation from proteins and oligopeptides in kefir. Furthermore, bioactive peptides present in certain compartments of the gastrointestinal tract may exert local physiological effects.
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Affiliation(s)
- Yufang Liu
- Department of Chemistry and Pharmacy, Food Chemistry Unit, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU) , Schuhstraße 19, 91052 Erlangen, Germany
| | - Monika Pischetsrieder
- Department of Chemistry and Pharmacy, Food Chemistry Unit, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU) , Schuhstraße 19, 91052 Erlangen, Germany
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