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A nano particle vector comprised of poly lactic‐co‐glycolic acid and monophosphoryl lipid A and recombinant Mycobacterium avium subsp paratuberculosis peptides stimulate a pro‐immune profile in bovine macrophages
Author(s) -
Souza C.D.,
Bannantine J.P.,
Brown W.C.,
Norton M.G.,
Davis W.C.,
Hwang J.K.,
Ziaei P.,
Abdellrazeq G.S.,
Eren M.V.,
Deringer J.R.,
Laws E.,
Cardieri M.C.D.
Publication year - 2017
Publication title -
journal of applied microbiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.889
H-Index - 156
eISSN - 1365-2672
pISSN - 1364-5072
DOI - 10.1111/jam.13491
Subject(s) - plga , paratuberculosis , adjuvant , immune system , recombinant dna , peptide , microbiology and biotechnology , peptide vaccine , mycobacterium , antigen , chemistry , biology , biochemistry , immunology , in vitro , epitope , bacteria , genetics , gene
Aims We evaluated the potential of a nanoparticle ( NP ) delivery system to improve methods of delivery of candidate peptide‐based vaccines for Paratuberculosis in cattle. Methods and Results Peptides derived from Mycobacterium avium subsp. paratuberculosis ( Map ), and the pro‐inflammatory monophosphoryl lipid A ( MPLA ) were incorporated in polymeric NP s based on poly ( d , l ‐lactide‐co‐glycolide) ( PLGA ). The PLGA / MPLA NP s carriers were incubated with macrophages to examine their effects on survival and function. PLGA / MPLA NP s, with and without Map antigens, are efficiently phagocytized by macrophages with no evidence of toxicity. PLGA / MPLA NP formulations did not alter the level of expression of MHC I or II molecules. Expression of TNF α and IL 12p40 was increased in Map ‐loaded NP s. T‐cell proliferation studies using a model peptide from Anaplasma marginale demonstrated that a CD 4 T‐cell recall response could be elicited with macrophages pulsed with the peptide encapsulated in the PLGA / MPLA NP . Conclusions These findings indicate PLGA / MPLA NP s can be used as a vehicle for delivery and testing of candidate peptide‐based vaccines. Significance and Impact of the Study These results will assist on more in depth studies on PLGA NP delivery systems that may lead to the development of a peptide‐based vaccine for cattle.