Abstract
Porous silicon (pSi) nanoparticles are loaded with Immunoglobulin A-2 (IgA2) antibodies, and the assembly is coated with pH-responsive polymers on the basis of the Eudragit family of enteric polymers (L100, S100, and L30-D55). The temporal release of the protein from the nanocomposite formulations is quantified following an in vitro protocol simulating oral delivery: incubation in simulated gastric fluid (SGF; at pH 1.2) for 2 h, followed by a fasting state simulated intestinal fluid (FasSIF; at pH 6.8) or phosphate buffer solution (PBS; at pH 7.4). The nanocomposite formulations display a negligible release in SGF, while more than 50% of the loaded IgA2 is released in solutions at a pH of 6.8 (FasSIF) or 7.4 (PBS). Between 21 and 44% of the released IgA2 retains its functional activity. A capsule-based system is also evaluated, where the IgA2-loaded particles are packed into a gelatin capsule and the capsule is coated with either EudragitL100 or EudragitS100 polymer for a targeted release in the small intestine or the colon, respectively. The capsule-based formulations outperform polymer-coated nanoparticles in vitro, preserving 45-54% of the activity of the released protein.
Original language | English |
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Pages (from-to) | 4140-4152 |
Number of pages | 13 |
Journal | ACS Biomaterials Science and Engineering |
Volume | 8 |
Issue number | 10 |
DOIs | |
State | Published - Oct 10 2022 |
Bibliographical note
Publisher Copyright:© 2022 American Chemical Society. All rights reserved.
Funding
This project was funded in part by the National Institutes of Health (Grant R01 AI132413-01), by the National Science Foundation under grant CBET-1603177, by the Defense Advanced Research Projects Agency (DARPA) under Cooperative Agreement HR0011-13-2-0017, and by the UC San Diego Materials Research Science and Engineering Center (UCSD MRSEC), supported by the National Science Foundation (Grant DMR-2011924). The authors would like to acknowledge support to M.K. from the Defense Advanced Research Project Agency (DARPA-BAA-13-03). T.K. would like to thank the National Health and Medical Research Council of Australia for an Early Career Fellowship (GNT1143296) and the University of New South Wales-Sydney for a Scientia grant. J.W. would like to thank the National Institutes of Health for support from training grant T32 CA153915-06. This work was performed in part in the San Diego Nanotechnology Infrastructure (SDNI) of UCSD, a member of the National Nanotechnology Coordinated Infrastructure, which is supported by the National Science Foundation (Grant ECCS-1542148). The content of the information within this document does not necessarily reflect the position or the policy of the Government.
Funders | Funder number |
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National Health and Medical Research Council, Australia | |
UC San Diego Materials Research Science and Engineering Center | |
Australian National Drug and Alcohol Research Centre of the University of New South Wales Sydney | ECCS-1542148, T32 CA153915-06 |
U.S. Department of Energy Chinese Academy of Sciences Guangzhou Municipal Science and Technology Project Oak Ridge National Laboratory Extreme Science and Engineering Discovery Environment National Science Foundation National Energy Research Scientific Computing Center National Natural Science Foundation of China | CBET-1603177 |
U.S. Department of Energy Chinese Academy of Sciences Guangzhou Municipal Science and Technology Project Oak Ridge National Laboratory Extreme Science and Engineering Discovery Environment National Science Foundation National Energy Research Scientific Computing Center National Natural Science Foundation of China | |
National Institutes of Health (NIH) | |
Division of Microbiology and Infectious Diseases, National Institute of Allergy and Infectious Diseases | R01AI132413 |
Division of Microbiology and Infectious Diseases, National Institute of Allergy and Infectious Diseases | |
Defense Advanced Research Projects Agency | DARPA-BAA-13-03, HR0011-13-2-0017 |
Defense Advanced Research Projects Agency | |
Materials Research Science and Engineering Center, University of California, San Diego | DMR-2011924 |
Materials Research Science and Engineering Center, University of California, San Diego | |
Australian National Health and Medical Research Council | GNT1143296 |
Australian National Health and Medical Research Council |
Keywords
- biologic antibacterial therapeutics, Eudragit polymer
- oral drug delivery
- pH-responsive drug delivery
ASJC Scopus subject areas
- Biomaterials
- Biomedical Engineering