1
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Zhuravleva IL, Bezrodnykh EA, Berezin BB, Tikhonov VE, Antonov YA. Effect of Soft Preheating of Bovine Serum Albumin on the Complexation with Oligochitosan: Structure and Conformation of BSA in the Complex. Macromol Biosci 2023; 23:e2300088. [PMID: 37268604 DOI: 10.1002/mabi.202300088] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2023] [Revised: 05/25/2023] [Indexed: 06/04/2023]
Abstract
Phase analysis, spectroscopic, and light scattering methods are applied to investigate the peculiarities of the interaction of oligochitosan (OCHI) with native and preheated bovine serum albumin (BSA) as well as the conformational and structural changes of BSA in BSA/OCHI complex. As shown, untreated BSA binds with OCHI mainly forming soluble electrostatic nanocomplexes, with the binding causing an increase in BSA helicity without a change in the local tertiary structure and thermal stability of BSA. In contrast, soft preheating at 56 °C enhances the complexation of BSA with OCHI and slightly destabilizes the secondary and local tertiary structures of BSA within the complex particles. Preheating at 64 °C (below the irreversible stage of BSA thermodenaturation) leads to further enhancement in the complexation and formation of insoluble complexes stabilized by both Coulomb forces and hydrophobic interactions. The finding can be promising for the preparation of biodegradable BSA/chitosan-based drug delivery systems.
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Affiliation(s)
- Irina L Zhuravleva
- N.M. Emanuel Institute of Biochemical Physics, Russian Academy of Sciences, Moscow, 119334, Russia
| | - Evgeniya A Bezrodnykh
- A. N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Moscow, 119334, Russia
| | - Boris B Berezin
- A. N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Moscow, 119334, Russia
| | - Vladimir E Tikhonov
- A. N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Moscow, 119334, Russia
| | - Yurij A Antonov
- N.M. Emanuel Institute of Biochemical Physics, Russian Academy of Sciences, Moscow, 119334, Russia
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2
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Kharmyssov C, Sekerbayev K, Nurekeyev Z, Gaipov A, Utegulov ZN. Mechano-Chemistry across Phase Transitions in Heated Albumin Protein Solutions. Polymers (Basel) 2023; 15:polym15092039. [PMID: 37177189 PMCID: PMC10180835 DOI: 10.3390/polym15092039] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2023] [Revised: 04/02/2023] [Accepted: 04/14/2023] [Indexed: 05/15/2023] Open
Abstract
The presence of certain proteins in biofluids such as synovial fluid, blood plasma, and saliva gives these fluids non-Newtonian viscoelastic properties. The amount of these protein macromolecules in biofluids is an important biomarker for the diagnosis of various health conditions, including Alzheimer's disease, cardiovascular disorders, and joint quality. However, existing technologies for measuring the behavior of macromolecules in biofluids have limitations, such as long turnaround times, complex protocols, and insufficient sensitivity. To address these issues, we propose non-contact, optical Brillouin and Raman spectroscopy to assess the viscoelasticity and chemistry of non-Newtonian solutions, respectively, at different temperatures in several minutes. In this work, bovine and human serum albumin solution-based biopolymers were studied to obtain both their collective dynamics and molecular chemical evolution across heat-driven phase transitions at various protein concentrations. The observed phase transitions at elevated temperatures could be fully delayed in heated biopolymers by appropriately raising the level of protein concentration. The non-contact optical monitoring of viscoelastic and chemical property evolution could represent novel potential mechano-chemical biomarkers for disease diagnosis and subsequent treatment applications, including hyperthermia.
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Affiliation(s)
- Chingis Kharmyssov
- Department of Physics, School of Sciences and Humanities, Nazarbayev University, 010000 Astana, Kazakhstan
- Science Department, Astana IT University, 010000 Astana, Kazakhstan
| | - Kairolla Sekerbayev
- Department of Physics, School of Sciences and Humanities, Nazarbayev University, 010000 Astana, Kazakhstan
| | - Zhangatay Nurekeyev
- Department of Physics, School of Sciences and Humanities, Nazarbayev University, 010000 Astana, Kazakhstan
- Institute for Experimental Physics, Hamburg University, Luruper Chaussee 149, 22761 Hamburg, Germany
| | - Abduzhappar Gaipov
- Department of Medicine, School of Medicine, Nazarbayev University, 010000 Astana, Kazakhstan
| | - Zhandos N Utegulov
- Department of Physics, School of Sciences and Humanities, Nazarbayev University, 010000 Astana, Kazakhstan
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3
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Christofi E, Barran P. Ion Mobility Mass Spectrometry (IM-MS) for Structural Biology: Insights Gained by Measuring Mass, Charge, and Collision Cross Section. Chem Rev 2023; 123:2902-2949. [PMID: 36827511 PMCID: PMC10037255 DOI: 10.1021/acs.chemrev.2c00600] [Citation(s) in RCA: 43] [Impact Index Per Article: 43.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/26/2023]
Abstract
The investigation of macromolecular biomolecules with ion mobility mass spectrometry (IM-MS) techniques has provided substantial insights into the field of structural biology over the past two decades. An IM-MS workflow applied to a given target analyte provides mass, charge, and conformation, and all three of these can be used to discern structural information. While mass and charge are determined in mass spectrometry (MS), it is the addition of ion mobility that enables the separation of isomeric and isobaric ions and the direct elucidation of conformation, which has reaped huge benefits for structural biology. In this review, where we focus on the analysis of proteins and their complexes, we outline the typical features of an IM-MS experiment from the preparation of samples, the creation of ions, and their separation in different mobility and mass spectrometers. We describe the interpretation of ion mobility data in terms of protein conformation and how the data can be compared with data from other sources with the use of computational tools. The benefit of coupling mobility analysis to activation via collisions with gas or surfaces or photons photoactivation is detailed with reference to recent examples. And finally, we focus on insights afforded by IM-MS experiments when applied to the study of conformationally dynamic and intrinsically disordered proteins.
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Affiliation(s)
- Emilia Christofi
- Michael Barber Centre for Collaborative Mass Spectrometry, Manchester Institute of Biotechnology, University of Manchester, Princess Street, Manchester M1 7DN, United Kingdom
| | - Perdita Barran
- Michael Barber Centre for Collaborative Mass Spectrometry, Manchester Institute of Biotechnology, University of Manchester, Princess Street, Manchester M1 7DN, United Kingdom
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4
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Wei D, Wang M, Wang H, Liu G, Fang J, Jiang Y. Development of a Method for Fast Assessment of Protein Solubility Based on Ultrasonic Dispersion and Differential Centrifugation Technology. ACS OMEGA 2022; 7:31338-31347. [PMID: 36092597 PMCID: PMC9453942 DOI: 10.1021/acsomega.2c03666] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/14/2022] [Accepted: 08/10/2022] [Indexed: 06/15/2023]
Abstract
Protein solubility is very important for protein crystallization, bioprocess development, and protein application. In this study, a method based on the stability of a protein dispersion system is proposed for fast assessment of protein solubility, which mainly involves ultrasonic dispersion, differential centrifugation, and spectral measurement (UDDCS) and curvature estimation. The appropriate ultrasonic time and centrifugal time were experimentally determined at first. The results show that the relationship between the standard deviation and the protein concentrations originally added accords with the modified exponential equation, and the corresponding concentration of the maximum curvature point is defined as the solubility of the protein. Lysozyme solubility data in NaCl aqueous solutions and zein solubility data in ethanol aqueous solutions are selected to verify the UDDCS method by comparing the data obtained by the UDDCS method and the results from references, and the results indicate that the UDDCS method is reliable, universal, and time-saving. Finally, measurements of zein solubility in NaOH solution and casein solubility in urea aqueous solution were conducted as test cases by the UDDCS method.
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Affiliation(s)
- Dongwei Wei
- School
of Chemical Engineering and Materials Science, Quanzhou Normal University, Quanzhou 362000, China
| | - Meng Wang
- School
of Chemical Engineering and Materials Science, Quanzhou Normal University, Quanzhou 362000, China
| | - Hongdi Wang
- College
of Material, Chemistry and Chemical Engineering, Key Laboratory of
Organosilicon Chemistry and Material Technology, Ministry of Education, Hangzhou Normal University, Hangzhou 311121, Zhejiang, China
| | - Guijin Liu
- School
of Pharmaceutical Sciences, Hainan University, Haikou 570228, China
| | - Jun Fang
- School
of Chemical Engineering and Materials Science, Quanzhou Normal University, Quanzhou 362000, China
| | - Yanbin Jiang
- School
of Chemistry and Chemical Engineering, South
China University of Technology, Guangzhou 510640, China
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5
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Huellemeier HA, Eren NM, Ortega-Anaya J, Jimenez-Flores R, Heldman DR. Application of quartz crystal microbalance with dissipation (QCM-D) to study low-temperature adsorption and fouling of milk fractions on stainless steel. Chem Eng Sci 2022. [DOI: 10.1016/j.ces.2021.117004] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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6
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Jiménez-Barrios P, Jaén-Cano CM, Malumbres R, Cilveti-Vidaurreta F, Bellanco-Sevilla A, Miralles B, Recio I, Martínez-Sanz M. Thermal stability of bovine lactoferrin prepared by cation exchange chromatography and its blends with authorized additives for infant formulas. Lebensm Wiss Technol 2022. [DOI: 10.1016/j.lwt.2021.112744] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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7
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Jiang Z, Shi R, Ma L, Munkh-Amgalan G, Bilawal A, Hou J, Tian B. Microwave irradiation treatment improved the structure, emulsifying properties and cell proliferation of laccase-crosslinked α-lactalbumin. Food Hydrocoll 2021. [DOI: 10.1016/j.foodhyd.2021.107036] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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8
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Anema SG. Heat-induced changes in caseins and casein micelles, including interactions with denatured whey proteins. Int Dairy J 2021. [DOI: 10.1016/j.idairyj.2021.105136] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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9
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Bista A, McCarthy N, O'Donnell CP, O'Shea N. Key parameters and strategies to control milk concentrate viscosity in milk powder manufacture. Int Dairy J 2021. [DOI: 10.1016/j.idairyj.2021.105120] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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10
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Muuronen K, Partanen R, Heidebrecht HJ, Kulozik U. Effects of conventional processing methods on whey proteins in production of native whey powder. Int Dairy J 2021. [DOI: 10.1016/j.idairyj.2020.104959] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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11
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Kazemi-Taskooh Z, Varidi M. Designation and characterization of cold-set whey protein-gellan gum hydrogel for iron entrapment. Food Hydrocoll 2021. [DOI: 10.1016/j.foodhyd.2020.106205] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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12
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Incorporating whey protein aggregates produced with heat and ultrasound treatment into rennet gels and model non-fat cheese systems. Food Hydrocoll 2020. [DOI: 10.1016/j.foodhyd.2020.106103] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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13
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Ong L, Pax AP, Ong A, Vongsvivut J, Tobin MJ, Kentish SE, Gras SL. The effect of pH on the fat and protein within cream cheese and their influence on textural and rheological properties. Food Chem 2020; 332:127327. [DOI: 10.1016/j.foodchem.2020.127327] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2020] [Revised: 05/21/2020] [Accepted: 06/10/2020] [Indexed: 10/24/2022]
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14
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Abstract
With the increased consumer demand for nutritional foods, it is important to develop value-added products, which will not only catch the attention of a wider consumer group but also provide greater benefits in terms of enhanced nutrition and functionality. Milk whey proteins are one of the most valued constituents due to their nutritional and techno-functional attributes. Whey proteins are rich in bioactive peptides, possessing bioactive properties such as being antioxidant and antihypertensive as well as having antimicrobial activities, which, when ingested, confers several health benefits. These peptides have the potential to be used as an active food ingredient in the production of functional foods. In addition to their bioactivities, whey proteins are known to possess enhanced functional attributes that allow them to be utilized in broad applications, such as an encapsulating agent or carrier materials to entrap bioactive compounds, emulsification, and in edible and active packaging. Hence, over the recent years, several whey protein-based ingredients have been developed and utilized in making formulations for a wide range of foods to harness their beneficial properties. This review highlights the bioactive properties, functional characteristics, associated processing limitations, and applications of different whey protein fractions and derivatives in the field of food formulations, encapsulation, and packaging.
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15
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Fang H, Hood EE. An Arabinoxylan Extracted from Corn Grain Is Inhibitory to Cellulase Activity. Ind Biotechnol (New Rochelle N Y) 2020. [DOI: 10.1089/ind.2020.0009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- Hong Fang
- Molecular Biosciences Graduate Program, Arkansas State University, Jonesboro, AR, USA
| | - Elizabeth E. Hood
- Arkansas Biosciences Institute, Arkansas State University, Jonesboro, AR, USA
- College of Agriculture, Arkansas State University, Jonesboro, AR, USA
- Infinite Enzymes, LLC, Jonesboro, AR, USA
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16
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Streicher C, Nguyen NH, Anema SG. Modifying whey protein concentrate/isolate by heating in the presence of cysteine. Int Dairy J 2020. [DOI: 10.1016/j.idairyj.2020.104675] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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17
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Reis MG, Harris P, Berry C, Nguyen H, Maclean P, Weeks M. Tracking changes in volatile components and lipids after homogenisation and thermal processing of milk. Int Dairy J 2020. [DOI: 10.1016/j.idairyj.2019.104624] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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18
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Yang HG, Li HY, Li P, Bao XY, Huang GX, Xing L, Zheng N, Wang JQ. Modulation activity of heat-treated and untreated lactoferrin on the TLR-4 pathway in anoxia cell model and cerebral ischemia reperfusion mouse model. J Dairy Sci 2019; 103:1151-1163. [PMID: 31837800 DOI: 10.3168/jds.2019-17002] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2019] [Accepted: 10/07/2019] [Indexed: 12/21/2022]
Abstract
This study aimed to investigate the modulation activity of heated and nonheated lactoferrins in an inflammatory pathway in anoxia and reoxygenation cell and cerebral ischemic reperfusion mouse models. Rat pheochromocytoma 12 (PC-12) cells were subjected to oxygen and glucose deprivation in vitro to construct an anoxia and reoxygenation cell model, and Institute for Cancer Research (ICR) mice were given carotid artery "ligation-relaxation" in vivo to construct a cerebral ischemic reperfusion mouse model. The protein levels of toll-like receptor 4 (TLR-4) and downstream inflammatory proteins including nuclear factor-κB (NF-κB), tumor necrosis factor-α (TNF-α), and IL-1β were detected. Meanwhile, metabonomic detection of overall metabolites of PC-12 cells was performed to screen out the specific changed metabolite affected by lactoferrin at the condition of anoxia and reoxygenation. The results showed that lactoferrin could inhibit the TLR-4-related pathway triggered by anoxia and reoxygenation and ischemic reperfusion. A total of 41 significantly changed metabolites were identified by metabonomic analysis, and glutathione was seen as a metabolite of interest in suppressing TLR-4-related pathway in anoxia and reoxygenation cell models. However, heated lactoferrin lost the ability of attenuating the TLR-4-related pathway. The loss of modulation activity of heated lactoferrin might be due to its protein aggregation, which was evidenced by larger average particle diameter than the unheated lactoferrin. This study is the first to investigate the effect of heat treatment on the modulation activity of lactoferrin in the TLR-4-related pathway in anoxia and reoxygenation cell and cerebral ischemic reperfusion mouse models, and indicate that lactoferrin may serve as a dietary intervention for cerebral ischemia.
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Affiliation(s)
- Huai-Gu Yang
- State Key Laboratory of Animal Nutrition, Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing 100193, P. R. China; Key Laboratory of Quality and Safety Control for Milk and Dairy Products of Ministry of Agriculture and Rural Affairs, Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing 100193, P. R. China; Laboratory of Quality and Safety Risk Assessment for Dairy Products of Ministry of Agriculture and Rural Affairs, Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing 100193, P. R. China; Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing 100193, P. R. China
| | - Hui-Ying Li
- State Key Laboratory of Animal Nutrition, Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing 100193, P. R. China; Key Laboratory of Quality and Safety Control for Milk and Dairy Products of Ministry of Agriculture and Rural Affairs, Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing 100193, P. R. China; Laboratory of Quality and Safety Risk Assessment for Dairy Products of Ministry of Agriculture and Rural Affairs, Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing 100193, P. R. China; Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing 100193, P. R. China
| | - Peng Li
- State Key Laboratory of Animal Nutrition, Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing 100193, P. R. China; Key Laboratory of Quality and Safety Control for Milk and Dairy Products of Ministry of Agriculture and Rural Affairs, Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing 100193, P. R. China; Laboratory of Quality and Safety Risk Assessment for Dairy Products of Ministry of Agriculture and Rural Affairs, Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing 100193, P. R. China; Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing 100193, P. R. China
| | - Xiao-Yu Bao
- State Key Laboratory of Animal Nutrition, Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing 100193, P. R. China; Key Laboratory of Quality and Safety Control for Milk and Dairy Products of Ministry of Agriculture and Rural Affairs, Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing 100193, P. R. China; Laboratory of Quality and Safety Risk Assessment for Dairy Products of Ministry of Agriculture and Rural Affairs, Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing 100193, P. R. China; Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing 100193, P. R. China
| | - Guo-Xin Huang
- State Key Laboratory of Animal Nutrition, Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing 100193, P. R. China; Key Laboratory of Quality and Safety Control for Milk and Dairy Products of Ministry of Agriculture and Rural Affairs, Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing 100193, P. R. China; Laboratory of Quality and Safety Risk Assessment for Dairy Products of Ministry of Agriculture and Rural Affairs, Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing 100193, P. R. China; Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing 100193, P. R. China
| | - Lei Xing
- State Key Laboratory of Animal Nutrition, Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing 100193, P. R. China; Key Laboratory of Quality and Safety Control for Milk and Dairy Products of Ministry of Agriculture and Rural Affairs, Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing 100193, P. R. China; Laboratory of Quality and Safety Risk Assessment for Dairy Products of Ministry of Agriculture and Rural Affairs, Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing 100193, P. R. China; Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing 100193, P. R. China
| | - Nan Zheng
- State Key Laboratory of Animal Nutrition, Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing 100193, P. R. China; Key Laboratory of Quality and Safety Control for Milk and Dairy Products of Ministry of Agriculture and Rural Affairs, Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing 100193, P. R. China; Laboratory of Quality and Safety Risk Assessment for Dairy Products of Ministry of Agriculture and Rural Affairs, Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing 100193, P. R. China; Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing 100193, P. R. China.
| | - Jia-Qi Wang
- State Key Laboratory of Animal Nutrition, Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing 100193, P. R. China; Key Laboratory of Quality and Safety Control for Milk and Dairy Products of Ministry of Agriculture and Rural Affairs, Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing 100193, P. R. China; Laboratory of Quality and Safety Risk Assessment for Dairy Products of Ministry of Agriculture and Rural Affairs, Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing 100193, P. R. China; Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing 100193, P. R. China.
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19
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Wei YS, Feng K, Zong MH, Wu H. pH-responsive composite micro-capsule as an efficient intestinal-specific oral delivery system for lactoferrin. Food Hydrocoll 2019. [DOI: 10.1016/j.foodhyd.2019.04.029] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
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20
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Oliveira DRB, Furtado GDF, Cunha RL. Solid lipid nanoparticles stabilized by sodium caseinate and lactoferrin. Food Hydrocoll 2019. [DOI: 10.1016/j.foodhyd.2018.12.025] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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21
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Li HY, Yang HG, Li P, Wang YZ, Huang GX, Xing L, Wang JQ, Zheng N. Effect of Heat Treatment on the Antitumor Activity of Lactoferrin in Human Colon Tumor (HT29) Model. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2019; 67:140-147. [PMID: 30418775 DOI: 10.1021/acs.jafc.8b05131] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
To investigate the effect of heat treatment on the antitumor activity of lactoferrin in colon cancer cells and colon tumors, the HT-29 (human intestinal epithelial tumor cell) cell line was exposed to lactoferrin and various heat treatments. The impacts on cell proliferation, invasion, and migration were observed in vitro, and nude mice bearing HT29 tumors were administered lactoferrin and underwent various heat treatments in vivo. In the HT29 cell proliferation test using transwell and scratch analyses, lactoferrin (20 mg/mL) without or with heat treatment (50 and 70 °C) significantly inhibited cell proliferation, migration, and invasion (compared with the control, p < 0.05), while lactoferrin with heat treatment (100 °C) did not affect these parameters. In vivo, HT29 tumor weight was significantly reduced in the lactoferrin (without heat treatment and with 50 and 70 °C treatment) groups (1.59 ± 0.20, 1.67 ± 0.25, and 2.41 ± 0.42 g, compared with the control, p < 0.05), and there was no significant difference between the control (3.73 ± 0.33 g) and the 100 °C treatment group (3.58 ± 0.29 g). Moreover, 100 °C heat treatment reduced inhibition of the VEGFR2/VEGFA/PI3K/Akt/Erk1/2 angiogenesis pathway by lactoferrin. In summary, HT29 tumors were effectively suppressed by lactoferrin via inhibition of VEGFR2/VEGFA/PI3K/Akt/Erk1/2 pathway, and heat treatment affected the antitumor activity of lactoferrin in a temperature-dependent manner.
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Affiliation(s)
- Hui-Ying Li
- Institute of Animal Sciences of Chinese Academy of Agricultural Sciences , Beijing 100193 , P. R. China
| | - Huai-Gu Yang
- Institute of Animal Sciences of Chinese Academy of Agricultural Sciences , Beijing 100193 , P. R. China
| | - Peng Li
- Institute of Animal Sciences of Chinese Academy of Agricultural Sciences , Beijing 100193 , P. R. China
| | - Yi-Zhen Wang
- Institute of Animal Sciences of Chinese Academy of Agricultural Sciences , Beijing 100193 , P. R. China
| | - Guo-Xin Huang
- Institute of Animal Sciences of Chinese Academy of Agricultural Sciences , Beijing 100193 , P. R. China
| | - Lei Xing
- Institute of Animal Sciences of Chinese Academy of Agricultural Sciences , Beijing 100193 , P. R. China
| | - Jia-Qi Wang
- Institute of Animal Sciences of Chinese Academy of Agricultural Sciences , Beijing 100193 , P. R. China
| | - Nan Zheng
- Institute of Animal Sciences of Chinese Academy of Agricultural Sciences , Beijing 100193 , P. R. China
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22
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Leong TSH, Walter V, Gamlath CJ, Yang M, Martin GJO, Ashokkumar M. Functionalised dairy streams: Tailoring protein functionality using sonication and heating. ULTRASONICS SONOCHEMISTRY 2018; 48:499-508. [PMID: 30080577 DOI: 10.1016/j.ultsonch.2018.07.010] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/11/2018] [Revised: 06/07/2018] [Accepted: 07/04/2018] [Indexed: 06/08/2023]
Abstract
Ultrasound can be used to modify the functional interactions between casein and whey proteins in dairy systems. This study reports on ongoing developments in understanding the effect of ultrasound and heating on milk proteins in systems with modified casein-whey protein ratios (97:3, 80:20 and 50:50), prepared from milk protein concentrates that were fractionated by microfiltration, based on protein size. Heating of concentrated casein streams (9% w/w) at 80.0 °C for up to 9 min resulted in reduced gelation functionality and increased viscosity, even in the absence of added whey proteins. 20 kHz ultrasonication at 20.8 W calorimetric power for 1 min was able to break protein aggregates formed during heating, resulting in improved gelation and reduced viscosity. Interestingly, when heated whey protein was recombined with unheated casein the gelation properties were similar to unheated controls. In contrast, when heat treated casein streams were recombined with unheated whey protein, the gel forming functionality was reduced. This study therefore shows that using specific combinations of heat and/or ultrasound, fractionated dairy streams can be tailored for specific functional outcomes.
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Affiliation(s)
- Thomas S H Leong
- The ARC Dairy Innovation Hub, The University of Melbourne, Parkville, VIC 3010, Australia; School of Chemistry, The University of Melbourne, Parkville, VIC 3010, Australia
| | - Vincent Walter
- The ARC Dairy Innovation Hub, The University of Melbourne, Parkville, VIC 3010, Australia; School of Chemistry, The University of Melbourne, Parkville, VIC 3010, Australia
| | - Charitha J Gamlath
- The ARC Dairy Innovation Hub, The University of Melbourne, Parkville, VIC 3010, Australia; School of Chemistry, The University of Melbourne, Parkville, VIC 3010, Australia; The Department of Chemical Engineering, The University of Melbourne, Parkville, VIC 3010, Australia
| | - Min Yang
- College of Science, Gansu Agricultural University, Lanzhou 730070, China
| | - Gregory J O Martin
- The ARC Dairy Innovation Hub, The University of Melbourne, Parkville, VIC 3010, Australia; The Department of Chemical Engineering, The University of Melbourne, Parkville, VIC 3010, Australia.
| | - Muthupandian Ashokkumar
- The ARC Dairy Innovation Hub, The University of Melbourne, Parkville, VIC 3010, Australia; School of Chemistry, The University of Melbourne, Parkville, VIC 3010, Australia.
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Nhan C, Small DM, May BK, Hung A. pH-induced structural changes of apo-lactoferrin and implications for its function: a molecular dynamics simulation study. MOLECULAR SIMULATION 2018. [DOI: 10.1080/08927022.2018.1535178] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Carol Nhan
- School of Science, RMIT University, Melbourne, Australia
| | | | - Bee K. May
- School of Science, RMIT University, Melbourne, Australia
| | - Andrew Hung
- School of Science, RMIT University, Melbourne, Australia
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24
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The effect of thiol reagents on the denaturation of the whey protein in milk and whey protein concentrate solutions. Int Dairy J 2018. [DOI: 10.1016/j.idairyj.2018.06.012] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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25
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Adsorption characteristics of various proteins on a metal surface in the presence of an external electric potential. Colloids Surf B Biointerfaces 2018; 166:262-268. [DOI: 10.1016/j.colsurfb.2018.03.035] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2017] [Revised: 03/22/2018] [Accepted: 03/23/2018] [Indexed: 11/22/2022]
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26
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Ong L, Kentish SE, Gras SL. Small scale production of cream cheese: A comparison of batch centrifugation and cloth bag methods. Int Dairy J 2018. [DOI: 10.1016/j.idairyj.2018.01.008] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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27
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Smialowska A, Matia-Merino L, Carr A. Assessing the iron chelation capacity of goat casein digest isolates. J Dairy Sci 2017; 100:2553-2563. [DOI: 10.3168/jds.2016-12090] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2016] [Accepted: 12/21/2016] [Indexed: 11/19/2022]
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28
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Taterka H, Castillo M. Analysis of the preferential mechanisms of denaturation of whey protein variants as a function of temperature and pH for the development of an optical sensor. INT J DAIRY TECHNOL 2017. [DOI: 10.1111/1471-0307.12348] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Affiliation(s)
- Heather Taterka
- Departament de Ciència Animal i dels Aliments; Universitat Autònoma de Barcelona; Campus de la UAB 08193 Bellaterra, Cerdanyola del Vallés, Barcelona Spain
| | - Manuel Castillo
- Departament de Ciència Animal i dels Aliments; Universitat Autònoma de Barcelona; Campus de la UAB 08193 Bellaterra, Cerdanyola del Vallés, Barcelona Spain
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29
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Optimization of pH, temperature and CaCl2 concentrations for Ricotta cheese production from Buffalo cheese whey using Response Surface Methodology. J DAIRY RES 2017; 84:109-116. [PMID: 28252360 DOI: 10.1017/s0022029916000819] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
The recovery of milk constituents from cheese whey is affected by various processing conditions followed during production of Ricotta cheese. The objective of the present investigation was to optimize the temperature (60-90 °C), pH (3-7) and CaCl2 concentration (2·0-6·0 mm) for maximum yield/recovery of milk constituents. The research work was carried out in two phases. In 1st phase, the influence of these processing conditions was evaluated through 20 experiments formulated by central composite design (CCD) keeping the yield as response factor. The results obtained from these experiments were used to optimize processing conditions for maximum yield using response surface methodology (RSM). The three best combinations of processing conditions (90 °C, pH 7, CaCl2 6 mm), (100 °C, pH 5, CaCl2 4 mm) and (75 °C, pH 8·4, CaCl2 4 mm) were exploited in the next phase for Ricotta cheese production from a mixture of Buffalo cheese whey and skim milk (9 : 1) to determine the influence of optimized conditions on the cheese composition. Ricotta cheeses were analyzed for various physicochemical (moisture, fat, protein, lactose, total solids, pH and acidity indicated) parameters during storage of 60 d at 4 ± 2 °C after every 15 d interval. Ricotta cheese prepared at 90 °C, pH 7 and CaCl2 6 mm exhibited the highest cheese yield, proteins and total solids, while high fat content was recorded for cheese processed at 100 °C, pH 5 and 4 mm CaCl2 concentration. A significant storage-related increase in acidity and NPN was recorded for all cheese samples.
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30
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Cheison SC, Kulozik U. Impact of the environmental conditions and substrate pre-treatment on whey protein hydrolysis: A review. Crit Rev Food Sci Nutr 2017; 57:418-453. [PMID: 25976220 DOI: 10.1080/10408398.2014.959115] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Proteins in solution are subject to myriad forces stemming from interactions with each other as well as with the solvent media. The role of the environmental conditions, namely pH, temperature, ionic strength remains under-estimated yet it impacts protein conformations and consequently its interaction with, and susceptibility to, the enzyme. Enzymes, being proteins are also amenable to the environmental conditions because they are either activated or denatured depending on the choice of the conditions. Furthermore, enzyme specificity is restricted to a narrow regime of optimal conditions while opportunities outside the optimum conditions remain untapped. In addition, the composition of protein substrate (whether mixed or single purified) have been underestimated in previous studies. In addition, protein pre-treatment methods like heat denaturation prior to hydrolysis is a complex phenomenon whose progression is influenced by the environmental conditions including the presence or absence of sugars like lactose, ionic strength, purity of the protein, and the molecular structure of the mixed proteins particularly presence of free thiol groups. In this review, we revisit protein hydrolysis with a focus on the impact of the hydrolysis environment and show that preference of peptide bonds and/or one protein over another during hydrolysis is driven by the environmental conditions. Likewise, heat-denaturing is a process which is dependent on not only the environment but the presence or absence of other proteins.
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Affiliation(s)
| | - Ulrich Kulozik
- b Chair for Food Process Engineering and Dairy Technology Department , ZIEL Technology Section, Technische Universität München , Weihenstephaner Berg 1, Freising , Germany
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31
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Felfoul I, Jardin J, Gaucheron F, Attia H, Ayadi M. Proteomic profiling of camel and cow milk proteins under heat treatment. Food Chem 2017; 216:161-9. [DOI: 10.1016/j.foodchem.2016.08.007] [Citation(s) in RCA: 58] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2016] [Revised: 08/03/2016] [Accepted: 08/04/2016] [Indexed: 12/22/2022]
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32
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Anema SG. The thermal denaturation of the total whey protein in reconstituted whole milk. INT J DAIRY TECHNOL 2016. [DOI: 10.1111/1471-0307.12356] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Affiliation(s)
- Skelte G Anema
- Fonterra Research and Development Centre; Private Bag 11029 Dairy Farm Road Palmerston North New Zealand
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33
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Thermal properties of milk fat, xanthine oxidase, caseins and whey proteins in pulsed electric field-treated bovine whole milk. Food Chem 2016; 207:34-42. [DOI: 10.1016/j.foodchem.2016.03.076] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2015] [Revised: 03/19/2016] [Accepted: 03/22/2016] [Indexed: 11/22/2022]
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34
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Felfoul I, Lopez C, Gaucheron F, Attia H, Ayadi M. A laboratory investigation of cow and camel whey proteins deposition under different heat treatments. FOOD AND BIOPRODUCTS PROCESSING 2015. [DOI: 10.1016/j.fbp.2015.09.002] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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35
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An optical biosensor-based immunoassay for the determination of bovine serum albumin in milk and milk products. Int Dairy J 2015. [DOI: 10.1016/j.idairyj.2015.02.011] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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36
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Lebedeva NS, Gubarev YA, Koifman OI. Interaction between albumin and zinc tetra-4-[(4’ -carboxy)phenylamino]phthalocyanine. MENDELEEV COMMUNICATIONS 2015. [DOI: 10.1016/j.mencom.2015.07.027] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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37
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Johnston SB, Raines RT. Conformational stability and catalytic activity of PTEN variants linked to cancers and autism spectrum disorders. Biochemistry 2015; 54:1576-82. [PMID: 25647146 DOI: 10.1021/acs.biochem.5b00028] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Phosphoinositides are membrane components that play critical regulatory roles in mammalian cells. The enzyme PTEN, which catalyzes the dephosphorylation of the phosphoinositide PIP3, is damaged in most sporadic tumors. Mutations in the PTEN gene have also been linked to autism spectrum disorders and other forms of delayed development. Here, human PTEN is shown to be on the cusp of unfolding under physiological conditions. Variants of human PTEN linked to somatic cancers and disorders on the autism spectrum are shown to be impaired in their conformational stability, catalytic activity, or both. Those variants linked only to autism have activity higher than the activity of those linked to cancers. PTEN-L, which is a secreted trans-active isoform, has conformational stability greater than that of the wild-type enzyme. These data indicate that PTEN is a fragile enzyme cast in a crucial role in cellular metabolism and suggest that PTEN-L is a repository for a critical catalytic activity.
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Affiliation(s)
- Sean B Johnston
- Department of Biochemistry and ‡Department of Chemistry, University of Wisconsin-Madison , Madison, Wisconsin 53706, United States
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38
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Wijayanti HB, Bansal N, Deeth HC. Stability of Whey Proteins during Thermal Processing: A Review. Compr Rev Food Sci Food Saf 2014. [DOI: 10.1111/1541-4337.12105] [Citation(s) in RCA: 215] [Impact Index Per Article: 21.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Heni B. Wijayanti
- School of Agriculture and Food Sciences; Univ. of Queensland; Brisbane QLD 4072 Australia
| | - Nidhi Bansal
- School of Agriculture and Food Sciences; Univ. of Queensland; Brisbane QLD 4072 Australia
| | - Hilton C. Deeth
- School of Agriculture and Food Sciences; Univ. of Queensland; Brisbane QLD 4072 Australia
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39
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Ebrahim F, Shankaranarayanan JS, Kanwar JR, Gurudevan S, Krishnan UM, Kanwar RK. Identification of unprecedented anticancer properties of high molecular weight biomacromolecular complex containing bovine lactoferrin (HMW-bLf). PLoS One 2014; 9:e106568. [PMID: 25222273 PMCID: PMC4164354 DOI: 10.1371/journal.pone.0106568] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2014] [Accepted: 07/31/2014] [Indexed: 12/18/2022] Open
Abstract
With the successful clinical trials, multifunctional glycoprotein bovine lactoferrin is gaining attention as a safe nutraceutical and biologic drug targeting cancer, chronic-inflammatory, viral and microbial diseases. Interestingly, recent findings that human lactoferrin oligomerizes under simulated physiological conditions signify the possible role of oligomerization in the multifunctional activities of lactoferrin molecule during infections and in disease targeting signaling pathways. Here we report the purification and physicochemical characterization of high molecular weight biomacromolecular complex containing bovine lactoferrin (≥250 kDa), from bovine colostrum, a naturally enriched source of lactoferrin. It showed structural similarities to native monomeric iron free (Apo) lactoferrin (∼78–80 kDa), retained anti-bovine lactoferrin antibody specific binding and displayed potential receptor binding properties when tested for cellular internalization. It further displayed higher thermal stability and better resistance to gut enzyme digestion than native bLf monomer. High molecular weight bovine lactoferrin was functionally bioactive and inhibited significantly the cell proliferation (p<0.01) of human breast and colon carcinoma derived cells. It induced significantly higher cancer cell death (apoptosis) and cytotoxicity in a dose-dependent manner in cancer cells than the normal intestinal cells. Upon cellular internalization, it led to the up-regulation of caspase-3 expression and degradation of actin. In order to identify the cutting edge future potential of this bio-macromolecule in medicine over the monomer, its in-depth structural and functional properties need to be investigated further.
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Affiliation(s)
- Fawzi Ebrahim
- Nanomedicine-Laboratory of Immunology and Molecular Biomedical Research, School of Medicine, Faculty of Health, Deakin University, Geelong, Victoria, Australia
| | | | - Jagat R. Kanwar
- Nanomedicine-Laboratory of Immunology and Molecular Biomedical Research, School of Medicine, Faculty of Health, Deakin University, Geelong, Victoria, Australia
| | - Sneha Gurudevan
- Nanomedicine-Laboratory of Immunology and Molecular Biomedical Research, School of Medicine, Faculty of Health, Deakin University, Geelong, Victoria, Australia
| | - Uma Maheswari Krishnan
- Centre for Nanotechnology & Advanced Biomaterials (CeNTAB), School of Chemical & Biotechnology, SASTRA University, Thanjavur, India
| | - Rupinder K. Kanwar
- Nanomedicine-Laboratory of Immunology and Molecular Biomedical Research, School of Medicine, Faculty of Health, Deakin University, Geelong, Victoria, Australia
- * E-mail:
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40
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Nguyen NH, Wong M, Guyomarc'h F, Havea P, Anema SG. Effects of non-covalent interactions between the milk proteins on the rheological properties of acid gels. Int Dairy J 2014. [DOI: 10.1016/j.idairyj.2014.03.001] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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41
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Gold nanoparticle hyperthermia reduces radiotherapy dose. NANOMEDICINE-NANOTECHNOLOGY BIOLOGY AND MEDICINE 2014; 10:1609-17. [PMID: 24990355 DOI: 10.1016/j.nano.2014.05.006] [Citation(s) in RCA: 84] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/12/2013] [Revised: 05/06/2014] [Accepted: 05/13/2014] [Indexed: 01/09/2023]
Abstract
UNLABELLED Gold nanoparticles can absorb near infrared light, resulting in heating and ablation of tumors. Gold nanoparticles have also been used for enhancing the X-ray dose to tumors. The combination of hyperthermia and radiotherapy is synergistic, importantly allowing a reduction in X-ray dose with improved therapeutic results. Here we intratumorally infused small 15 nm gold nanoparticles engineered to be transformed from infrared-transparent to infrared-absorptive by the tumor, then heated by infrared followed by X-ray treatment. Synergy was studied using a very radioresistant subcutaneous squamous cell carcinoma (SCCVII) in mice. It was found that the dose required to control 50% of the tumors, normally 55 Gy, could be reduced to <15 Gy (a factor of >3.7). Gold nanoparticles therefore provide a method to combine hyperthermia and radiotherapy to drastically reduce the X-ray radiation needed, thus sparing normal tissue, reducing side effects, and making radiotherapy more effective. FROM THE CLINICAL EDITOR Gold nanoparticles are known to enhance the efficacy of X-ray in tumor irradiation resulting in tumor heating and ablation. They also absorb near infrared light. This dual property was studied using a very radioresistant subcutaneous squamous cell carcinoma in mice, demonstrating that the dose required to control 50% of the tumors could be reduced by a factor of > 3.7, paving the way to potential future clinical applications.
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42
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Sadeghinezhad E, Kazi SN, Dahari M, Safaei MR, Sadri R, Badarudin A. A Comprehensive Review of Milk Fouling on Heated Surfaces. Crit Rev Food Sci Nutr 2014; 55:1724-43. [DOI: 10.1080/10408398.2012.752343] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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43
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Physico-chemical properties of different forms of bovine lactoferrin. Food Chem 2013; 141:3007-13. [DOI: 10.1016/j.foodchem.2013.05.139] [Citation(s) in RCA: 76] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2013] [Revised: 05/20/2013] [Accepted: 05/30/2013] [Indexed: 11/16/2022]
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44
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Bokkhim H, Tran T, Bansal N, Grøndahl L, Bhandari B. Evaluation of different methods for determination of the iron saturation level in bovine lactoferrin. Food Chem 2013; 152:121-7. [PMID: 24444915 DOI: 10.1016/j.foodchem.2013.11.132] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2013] [Revised: 11/04/2013] [Accepted: 11/23/2013] [Indexed: 11/18/2022]
Abstract
Lactoferrin (Lf) samples with ca. 25%, 50%, 75%, 85% and 100% iron saturation were prepared for the purpose of evaluating Chromametry, Differential Scanning Calorimetry (DSC) and Circular Dichroism (CD) spectropolarimetry for their suitability in determining the iron saturation level. Numerical values for colour from Chromametry, enthalpy change of denaturation (ΔHcal) from DSC and molar ellipticities from CD were statistically analysed to evaluate their correlation with the level of iron saturation in Lf. Linear regression analysis of colour coordinates Chroma (C(∗)) and hue (h°) angle on percentage iron saturation level of Lf showed that the values can be used to estimate the iron saturation level. The ΔHcal for the iron saturated peak and the CD ellipticities in the 310-340 nm region provided reliable data for the estimation of iron saturation level of Lf up to 75%. Mono- and di-saturated Lf displayed the same thermal stability and very similar tertiary structures.
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Affiliation(s)
- Huma Bokkhim
- The University of Queensland, School of Agriculture and Food Sciences, Brisbane, QLD 4072, Australia.
| | - Trang Tran
- The University of Queensland, School of Agriculture and Food Sciences, Brisbane, QLD 4072, Australia.
| | - Nidhi Bansal
- The University of Queensland, School of Agriculture and Food Sciences, Brisbane, QLD 4072, Australia.
| | - Lisbeth Grøndahl
- The University of Queensland, School of Chemistry and Molecular Biosciences, Brisbane, QLD 4072, Australia.
| | - Bhesh Bhandari
- The University of Queensland, School of Agriculture and Food Sciences, Brisbane, QLD 4072, Australia.
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45
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Mizuno M, Pikal MJ. Is the pre-Tg DSC endotherm observed with solid state proteins associated with the protein internal dynamics? Investigation of bovine serum albumin by solid state hydrogen/deuterium exchange. Eur J Pharm Biopharm 2013; 85:170-6. [DOI: 10.1016/j.ejpb.2013.04.019] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2013] [Revised: 04/23/2013] [Accepted: 04/25/2013] [Indexed: 11/30/2022]
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46
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Potes N, Kerry JP, Roos YH. Oil as reaction medium for glycation, oxidation, denaturation, and aggregation of whey protein systems of low water activity. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2013; 61:3748-3756. [PMID: 23517062 DOI: 10.1021/jf400277z] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Whey protein isolate (WPI)-oil (75:25) and WPI-oil-(glucose-fructose) (45:15:40) as models of high-protein systems containing either olive (OO) or sunflower oil (SO) were stored at 20 or 40 °C to investigate component interactions. The indicators of protein oxidation (carbonyl content) and aggregation (total sulfhydryl content) and heats of protein denaturation and aggregation were investigated. Highest levels of disulfide bonding and carbonyls in WPI-OO formed during the first 2 weeks of storage concomitantly with enhanced protein aggregation. WPI-OO and WPI-SO systems (prestorage) showed increased protein denaturation temperature. The WPI proteins showed higher heat sensitivity with OO or SO at 40 °C, and the system with OO showed preaggregated protein as found from decreased heats of protein aggregation. OO or SO in WPI-oil-(glucose-fructose) systems reduced heats of protein aggregation. Lipid oxidation products and nonenzymatic browning reactions in glucose-fructose-containing systems decreased the solubility of solids and increased protein aggregation, hydrophobicity, and hardening of structure.
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Affiliation(s)
- Naritchaya Potes
- School of Food and Nutritional Sciences, University College Cork, Cork, Ireland
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47
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Sadeghinezhad E, Kazi SN, Badarudin A, Zubair MNM, Dehkordi BL, Oon CS. A review of milk fouling on heat exchanger surfaces. REV CHEM ENG 2013. [DOI: 10.1515/revce-2013-0003] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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48
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Protein denaturation and functional properties of Lenient Steam Injection heat treated whey protein concentrate. INNOV FOOD SCI EMERG 2012. [DOI: 10.1016/j.ifset.2011.11.005] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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49
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Bengoechea C, Peinado I, McClements DJ. Formation of protein nanoparticles by controlled heat treatment of lactoferrin: Factors affecting particle characteristics. Food Hydrocoll 2011. [DOI: 10.1016/j.foodhyd.2010.12.014] [Citation(s) in RCA: 72] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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50
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Lebedeva N, Popova T, Kozbial M, Wszelaka-Rylik M, Gubarev Y, Gierycz P. Influence of complex formation with tetraantraquinoporphyrazines and tetrasulphophthalocyanine on thermal stability of bovine serum albumin. J PORPHYR PHTHALOCYA 2011. [DOI: 10.1142/s1088424611003185] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Interaction between bovine serum albumin (BSA) and tetraantraquinoporphyrazines (TAP) and tetrasulphophthalocyanine (Pc) aluminum hydroxide was studied by means of electron absorption spectroscopy, IR spectroscopy, fluorescence spectroscopy and differential scanning calorimetry. It was found that the complex formation of BSA with the TAPs results in increase of thermal stability of the protein while Pc does not have remarkable influence on the protein thermal denaturation.
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Affiliation(s)
- Natalia Lebedeva
- Institute of Solution Chemistry of Russian Academy of Science, Academicheskaya 1, Ivanovo 153045, Russian Federation
| | - Tatyana Popova
- Institute of Solution Chemistry of Russian Academy of Science, Academicheskaya 1, Ivanovo 153045, Russian Federation
| | - Malgorzata Kozbial
- Institute of Physical Chemistry of Polish Academy of Science, Kasprzaka 44/52, 01-224 Warsaw, Poland
| | - Malgorzata Wszelaka-Rylik
- Institute of Physical Chemistry of Polish Academy of Science, Kasprzaka 44/52, 01-224 Warsaw, Poland
| | - Yuri Gubarev
- Institute of Solution Chemistry of Russian Academy of Science, Academicheskaya 1, Ivanovo 153045, Russian Federation
| | - Pavel Gierycz
- Institute of Physical Chemistry of Polish Academy of Science, Kasprzaka 44/52, 01-224 Warsaw, Poland
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