PLGA nanoparticles loaded with beta-lactoglobulin-derived peptides modulate mucosal immunity and may facilitate cow's milk allergy prevention.

Abstract

Beta-lactoglobulin (BLG)-derived peptides may facilitate oral tolerance to whey and prevent cow's milk allergy (CMA). Loading of BLG-peptides in poly(lactic-co-glycolic acid) (PLGA) nanoparticles (Pep-NP) may improve this. Here we studied the uptake of NP and the capacity of NP and Pep-NP to activate bone marrow dendritic cells (BMDC). Furthermore, CMA prevention was evaluated by orally exposing three-week-old female C3H/HeOuJ mice to Pep-NP, NP or free peptides (PepMix) for 6 days before oral sensitization with whole whey protein and effects on the spleen and small intestine lamina propria (SI-LP) were studied. In BMDC, NP and Pep-NP enhanced CD40 expression and IL-6 and TNF-α secretion, while tended to decrease CD80 expression and prevented PepMix-induced IL-12 secretion. In vivo, oral exposure to Pep-NP, but not NP or PepMix, prior to whey sensitization tended to partially prevent the acute allergic skin response to whole whey protein. Splenocytes of NP-pre-exposed mice secreted increased levels of whey-specific IL-6, but this was silenced in Pep-NP-pre-exposed mice which also showed reduced TNF-α and IFN-γ secretion. In the SI-LP, Pep-NP pre-exposure reduced the CD4+ T cell frequency in CMA mice compared to PBS pre-exposure. In addition, while NP increased whey-specific IL-6 secretion in the SI-LP, Pep-NP did not and maintained regulatory TGF-β secretion. This study presents a proof-of-concept that PLGA nanoparticles facilitate the capacity of BLG peptides to suppress the allergic response to whole whey protein. Hence, PLGA nanoparticles may be further developed as an adjunct strategy for BLG-peptide-based oral tolerance induction and CMA prevention.

• Authors: Atanaska I Kostadinova, Jim Middelburg, Michele Ciulla, Johan Garssen, Wim E Hennink, Leon M J Knippels, Cornelus F van Nostrum, Linette E M Willemsen
• Journal: European journal of pharmacology (Eur J Pharmacol) Vol. 818 Pg. 211-220 (Jan 05 2018) ISSN: 1879-0712 [Electronic] Netherlands
• PMID: 29079360 (Publication Type: Journal Article)
• Copyright: Copyright © 2017 The Authors. Published by Elsevier B.V. All rights reserved.

Chemical References

• Allergens
• Cytokines
• Drug Carriers
• Lactoglobulins
• Peptide Fragments
• Whey Proteins
• Polylactic Acid-Polyglycolic Acid Copolymer
• Polyglycolic Acid
• Lactic Acid

Topics

• Allergens (immunology)
• Animals
• Cytokines (metabolism)
• Drug Carriers (chemistry)
• Immunity, Mucosal (drug effects)
• Lactic Acid (chemistry)
• Lactoglobulins (chemistry)
• Mice
• Milk Hypersensitivity (immunology, metabolism, prevention & control)
• Nanoparticles (chemistry)
• Peptide Fragments (chemistry, pharmacology)
• Polyglycolic Acid (chemistry)
• Polylactic Acid-Polyglycolic Acid Copolymer
• Spleen (drug effects, immunology)
• T-Lymphocytes, Regulatory (drug effects, immunology)
• Whey Proteins (immunology)