Abstract：
:Covalently modified albumin (BSA) microparticles were developed for potential use as an adjuvant in mucosal vaccines against hepatitis B. To synthesize consistent protein particles, a covalent approach was proposed to modify BSA. Our strategy was to bond maleic anhydride (MA) molecules to BSA structure by nucleophilic reaction for further radical cross-linking/polymerization reaction with N',N'-dimethylacrylamide (DMAAm). The presence of poly(N',N'-dimethylacrylamide) in the protein network enables the microparticles to show well-defined, homogeneous forms. Cytotoxicity tests showed that the cytotoxic concentration for 50% of VERO cells (CC50) was 216.25 ± 5.30 μg mL(-1) in 72 h of incubation. The obtained CC50 value is relatively low for an incubation time of 72 h, suggesting an acceptable biocompatibility. Assay of total protein showed that the encapsulation efficiency of the microparticles with hepatitis B surface antigen (HBsAg) was 77.7 ± 0.2%. For the reference sample, which was incubated without HBsAg, the quantity of protein was below the limit of detection.
journal_name
Biomacromoleculesjournal_title
Biomacromoleculesauthors
Sitta DL,Guilherme MR,Garcia FP,Cellet TS,Nakamura CV,Muniz EC,Rubira AFdoi
10.1021/bm400859zsubject
Has Abstractpub_date
2013-09-09 00:00:00pages
3231-7issue
9eissn
1525-7797issn
1526-4602journal_volume
14pub_type
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