- AutorIn
- Haifeng Xu Technische Universität Chemnitz
- Titel
- Custom-Designed Biohybrid Micromotor for Potential Disease Treatment
- Zitierfähige Url:
- https://nbn-resolving.org/urn:nbn:de:bsz:ch1-qucosa2-710484
- Datum der Einreichung
- 19.09.2019
- Datum der Verteidigung
- 12.03.2020
- Abstract (EN)
- Micromotors are recognized as promising candidates for untethered micromanipulation and targeted cargo transport. Their future application is, however, hindered by the low efficiency of drug encapsulation and their poor adaptability in physiological conditions. To address these challenges, one potential solution is to incorporate micromotors with biological materials as the combination of functional biological entities and smart artificial parts represents a manipulable and biologically friendly approach. This dissertation focuses on the development of custom-designed micromotors combined with sperm and their potential applications on targeted diseases treatment. By means of 2D and 3D lithography methods, microstructures with complex configurations can be fabricated for specific demands. Bovine and human sperm are both for the first time explored as drug carriers thanks to their high encapsulation efficiency of hydrophilic drugs, their powerful self-propulsion and their improved drug-uptake relying on the somatic-cell fusion ability. The hybrid micromotors containing drug loaded sperm and constructed artificial enhancements can be self-propelled by the sperm flagella and remotely guided and released to the target at high precision by employing weak external magnetic fields. As a result, micromotors based on both bovine and human sperm show significant anticancer effect. The application here can be further broadened to other biological environments, in particular to the blood stream, showing the potential on the treatment of blood diseases like blood clotting. Finally, to enhance the treatment efficiency, in particular to control sperm number and drug dose, three strategies are demonstrated to transport swarms of sperm. This research paves the way for the precision medicine based on engineered sperm-based micromotors.
- Verweis
- Sperm-Hybrid Micromotor for Targeted Drug Delivery
Link: https://doi.org/10.1021/acsnano.7b06398
DOI: 10.1021/acsnano.7b06398 - Sperm Micromotors for Cargo Delivery through Flowing Blood
Link: https://doi.org/10.1021/acsnano.9b07851
DOI: 10.1021/acsnano.9b07851 - Magnetic Micromotors for Multiple Motile Sperm Cells Capture, Transport, and Enzymatic Release
Link: https://doi.org/10.1002/anie.202005657
DOI: 10.1002/anie.202005657 - Freie Schlagwörter (EN)
- micromotors, sperm, drug delivery, cancer treatment, blood diseases, untethered robotics
- Klassifikation (DDC)
- 624
- Normschlagwörter (GND)
- Kleinstmotor, Robotik, Biohybrides System, Krankheit, Behandlung
- GutachterIn
- Prof. Dr. Oliver G. Schmidt
- Prof. Dr. Klaus Reinhardt
- BetreuerIn Hochschule / Universität
- Prof. Dr. Oliver G. Schmidt
- Den akademischen Grad verleihende / prüfende Institution
- Technische Universität Chemnitz, Chemnitz
- Version / Begutachtungsstatus
- publizierte Version / Verlagsversion
- URN Qucosa
- urn:nbn:de:bsz:ch1-qucosa2-710484
- Veröffentlichungsdatum Qucosa
- 02.07.2020
- Dokumenttyp
- Dissertation
- Sprache des Dokumentes
- Englisch
- Lizenz / Rechtehinweis