Tomato lectin-modified nanoemulsion-encapsulated MAGE1-HSP70/SEA complex protein vaccine: Targeting intestinal M cells following peroral administration - 09/06/19

pages | 9 |
Iconographies | 5 |
Vidéos | 0 |
Autres | 0 |
Graphical abstract |
Highlights |
• | TL-NE (MHS) was constructed with Tomato lectin (TL) and NE (MHS) nanovaccine using the carbodiimide cross-linking method. |
• | TL-NE (MHS) administered orally could produce stronger cellular immune responses and humoral immunity against MAGE-1. |
• | TL-NE (MHS) administered orally could delay tumor development, prolong the tumor bearing mice lifespan. |
• | TL-NE (MHS) could delay tumor development, prolong the tumor bearing mice lifespan and effectively prevent tumor metastasis and reoccurrence after surgery. |
Abstract |
Vaccines administered orally enable the stimulation of both the mucous membrane and system immune responses. However, tumor vaccines, whose effective elements are antigen protein molecules or gene-encoding antigens, are hardly accustomed to the harsh gastrointestinal environment. Here, we explored an oral nanoecapsulated tumor vaccine complex to evaluate the anti-tumor effect. Tomato lectin (TL) was modified on the surface of a nanoemulsion (NE) composed of MAGE1-HSP70/SEA (MHS). C57BL/6 mice were immunized with NE (-), NE (MHS) and TL-NE (MHS) via po. or sc. administration. Additionally, the cellular immunocompetence was detected by the enzyme-linked immunospot assay and lactate dehydrogenase release assay. Serum antibody titers were analyzed using the enzyme-linked immuno sorbent assay. Next, the therapeutic and tumor challenge assays were performed. The TL-NE (MHS) particles were 20 ± 5 nm in diameter and could resist pepsin and trypsin digestion. The cellular immune responses elicited by TL-NE (MHS) perioral were stronger than those by TL-NE (MHS)-sc. (p < 0.05) when targeted to B16-MAGE1 tumor cells. The levels of MAGE-1 antibody induced by TL-NE (MHS) via the oral route was higher than control group (p < 0.05). The percentage of CD4+ and CD8+ T cells in TL-NE (MHS)-po. group was more than other groups (p < 0.05). Furthermore, oral TL-NE (M)HScould delay tumor growth and defer tumor occurrence and tumor recurrence after resection in mice challenged with B16-MAGE-1 tumor cells. The study suggested that the oral TL-NE (MHS) vaccine delivery system is feasible to improve the vaccine protection effect and may have broad application in cancer therapy.
Le texte complet de cet article est disponible en PDF.Abbreviations : APCs, CTL, EE, ELISPOT, HPLC, HSP70, IFN-γ, LC, M cells, MAGE1, MHS, NE, PE, po., sc., SEA, TAA, TL, TNBS, TSA
Keywords : Tumor vaccine, Nanoemulsion, Tomato lectin, Peroral administration, Mucous membrane immunization
Plan
Vol 115
Article 108886- juillet 2019 Retour au numéroBienvenue sur EM-consulte, la référence des professionnels de santé.
L’accès au texte intégral de cet article nécessite un abonnement.
Bienvenue sur EM-consulte, la référence des professionnels de santé.
L’achat d’article à l’unité est indisponible à l’heure actuelle.
Déjà abonné à cette revue ?