Medizinische Universität Graz Austria/Österreich - Forschungsportal - Medical University of Graz
Gewählte Publikation:
SHR Neuro Krebs Kardio Lipid Stoffw Microb
Vidakovic, I; Kornmueller, K; Fiedler, D; Khinast, J; Fröhlich, E; Leitinger, G; Horn, C; Quehenberger, J; Spadiut, O; Prassl, R.
Archaeosomes for Oral Drug Delivery: From Continuous Microfluidics Production to Powdered Formulations.
Pharmaceutics. 2024; 16(6): 694
Doi: 10.3390/pharmaceutics16060694
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- Führende Autor*innen der Med Uni Graz
- Kornmüller Karin
- Prassl Ruth
- Vidakovic Ivan
- Co-Autor*innen der Med Uni Graz
- Fröhlich Eleonore
- Leitinger Gerd
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- Abstract:
- Archaeosomes were manufactured from natural archaeal lipids by a microfluidics-assisted single-step production method utilizing a mixture of di- and tetraether lipids extracted from Sulfolobus acidocaldarius. The primary aim of this study was to investigate the exceptional stability of archaeosomes as potential carriers for oral drug delivery, with a focus on powdered formulations. The archaeosomes were negatively charged with a size of approximately 100 nm and a low polydispersity index. To assess their suitability for oral delivery, the archaeosomes were loaded with two model drugs: calcein, a fluorescent compound, and insulin, a peptide hormone. The archaeosomes demonstrated high stability in simulated intestinal fluids, with only 5% of the encapsulated compounds being released after 24 h, regardless of the presence of degrading enzymes or extremely acidic pH values such as those found in the stomach. In a co-culture cell model system mimicking the intestinal barrier, the archaeosomes showed strong adhesion to the cell membranes, facilitating a slow release of contents. The archaeosomes were loaded with insulin in a single-step procedure achieving an encapsulation efficiency of approximately 35%. These particles have been exposed to extreme manufacturing temperatures during freeze-drying and spray-drying processes, demonstrating remarkable resilience under these harsh conditions. The fabrication of stable dry powder formulations of archaeosomes represents a promising advancement toward the development of solid dosage forms for oral delivery of biological drugs.
- Find related publications in this database (Keywords)
- archaeosomes
- archaeal lipids
- oral drug delivery
- insulin
- dry powder formulation
- solid dosage form