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Dynamic modeling of milk acidification: an empirical approach. FOOD AND BIOPRODUCTS PROCESSING 2021. [DOI: 10.1016/j.fbp.2021.04.010] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Sah BNP, Lueangsakulthai J, Hauser BR, Demers-Mathieu V, Scottoline B, Pastey MK, Dallas DC. Purification of Antibodies From Human Milk and Infant Digestates for Viral Inhibition Assays. Front Nutr 2020; 7:136. [PMID: 32984396 PMCID: PMC7477105 DOI: 10.3389/fnut.2020.00136] [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: 04/09/2020] [Accepted: 07/15/2020] [Indexed: 12/02/2022] Open
Abstract
Oral administration of enteric pathogen-specific immunoglobulins may be an ideal approach for preventing infectious diarrhea in infants and children. For oral administration to be effective, antibodies must survive functionally intact within the highly proteolytic digestive tract. As an initial step toward assessing the viability of this approach, we examined the survival of palivizumab, a recombinant monoclonal antibody (IgG1κ), across infant digestion and its ability to neutralize respiratory syncytial virus (RSV). Human milk and infant digestive samples contain substances known to interfere with the RSV neutralization assay (our selected functional test for antibody survival through digestion), therefore, antibody extraction from the matrix was required prior to performing the assay. The efficacy of various approaches for palivizumab purification from human milk, infant's gastric and intestinal digestates, including casein precipitation, salting out, molecular weight cut-off, and affinity chromatography (protein A and G) were compared. Affinity chromatography using protein G with high-salt elution followed by 30-kDa molecular weight cut-off centrifugal filtration was the most effective technique for purifying palivizumab from human milk and infant digestates with a high yield and reduced background interference for the viral neutralization assay. This work is broadly applicable to the optimal isolation of antibodies from human milk and infant digesta for viral neutralization assays, enables the examination of how digestion affects the viral neutralization capacity of antibodies within milk and digestive samples, and paves the way for assessment of the viability of oral administration of recombinant antibodies as a therapeutic approach to prevent enteric pathogen-induced infectious diarrhea in infants.
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Affiliation(s)
- Baidya Nath P. Sah
- Nutrition Program, School of Biological and Population Health Sciences, College of Public Health and Human Sciences, Oregon State University, Corvallis, OR, United States
| | - Jiraporn Lueangsakulthai
- Nutrition Program, School of Biological and Population Health Sciences, College of Public Health and Human Sciences, Oregon State University, Corvallis, OR, United States
| | - Benjamin R. Hauser
- Nutrition Program, School of Biological and Population Health Sciences, College of Public Health and Human Sciences, Oregon State University, Corvallis, OR, United States
| | - Veronique Demers-Mathieu
- Nutrition Program, School of Biological and Population Health Sciences, College of Public Health and Human Sciences, Oregon State University, Corvallis, OR, United States
| | - Brian Scottoline
- Division of Neonatology, Department of Pediatrics, School of Medicine, Oregon Health & Science University, Portland, OR, United States
| | - Manoj K. Pastey
- Carlson College of Veterinary Medicine, Oregon State University, Corvallis, OR, United States
| | - David C. Dallas
- Nutrition Program, School of Biological and Population Health Sciences, College of Public Health and Human Sciences, Oregon State University, Corvallis, OR, United States
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Kern L, Fabre O, Scher J, Petit J. Chemical fractionation of caseins by differential precipitation: influence of pH, calcium addition, protein concentration and temperature on the depletion in α‐ and β‐caseins. Int J Food Sci Technol 2019. [DOI: 10.1111/ijfs.14283] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Loïc Kern
- LIBio (Laboratoire d'Ingénierie des Biomolécules) Université de Lorraine F‐54000 Nancy France
| | - Olivier Fabre
- Agria Grand Est 2 rue du Doyen Marcel Roubault, Bâtiment Géologie54505 Vandoeuvre‐lès‐Nancy France
| | - Joël Scher
- LIBio (Laboratoire d'Ingénierie des Biomolécules) Université de Lorraine F‐54000 Nancy France
| | - Jeremy Petit
- LIBio (Laboratoire d'Ingénierie des Biomolécules) Université de Lorraine F‐54000 Nancy France
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Schmitt C, Sturm B, Grupa U, Hensel O. Analysis of the influence of different factors on the quality of a curd-whey mixture during pumping. Lebensm Wiss Technol 2016. [DOI: 10.1016/j.lwt.2015.07.069] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Li X, van der Steen G, van Dedem GWK, van der Wielen LAM, van Leeuwen M, van Gulik WM, Heijnen JJ, Ottens M, Krommenhoek EE, Gardeniers JGE, van den Berg A. Application of direct fluid flow oscillations to improve mixing in microbioreactors. AIChE J 2009. [DOI: 10.1002/aic.11880] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Hofland G, Berkhoff M, Witkamp G, Van der Wielen L. Dynamics of precipitation of casein with carbon dioxide. Int Dairy J 2003. [DOI: 10.1016/s0958-6946(03)00116-x] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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