Distribution of PEG-coated hollow polyelectrolyte microcapsules after introduction into the circulatory system and muscles of zebrafish. Ekaterina Borvinskaya, Anton Gurkov, Ekaterina Shchapova, Boris Baduev, Igor Meglinski, Maxim Timofeyev. Biology Open 2018 7: bio030015 doi: 10.1242/bio.030015, Published 5 January 2018
Distribution of PEG-coated hollow polyelectrolyte microcapsules after introduction into the circulatory system and muscles of zebrafish
|Author:||Borvinskaya, Ekaterina1,2; Gurkov, Anton1,3; Shchapova, Ekaterina1;|
1Institute of Biology at Irkutsk State University, Irkutsk 664003, Russia
2Institute of Biology at Karelian Research Centre of Russian Academy of Sciences, Petrozavodsk 185035, Russia
3Baikal Research Centre, Irkutsk 664003, Russia
4University of Oulu, Optoelectronics and Measurement Techniques Laboratory, Oulu 90570, Finland
|Online Access:||PDF Full Text (PDF, 3.6 MB)|
|Persistent link:|| http://urn.fi/urn:nbn:fi-fe201803146025
Company of Biologists,
|Publish Date:|| 2018-03-14
The use of polyelectrolyte multilayer microcapsules as carriers for fluorescent molecular probes is a prospective technique for monitoring the physiological characteristics of animal vasculature and interstitial environment in vivo. Polyelectrolyte microcapsules have many features that favor their use as implantable carriers of optical sensors, but little information is available on their interactions with complex living tissues, distribution or residence time following different routes of administration in the body of vertebrates. Using the common fish model, the zebrafish Danio rerio, we studied in vivo the distribution of non-biodegradable microcapsules covered with polyethylene glycol (PEG) over time in the adults and evaluated potential side effects of their delivery into the fish bloodstream and muscles. Fluorescent microcapsules administered into the bloodstream and interstitially (in concentrations that were sufficient for visualization and spectral signal recording) both showed negligible acute toxicity to the fishes during three weeks of observation. The distribution pattern of microcapsules delivered into the bloodstream was stable for at least one week, with microcapsules prevalent in capillaries-rich organs. However, after intramuscular injection, the phagocytosis of the microcapsules by immune cells was manifested, indicating considerable immunogenicity of the microcapsules despite PEG coverage. The long-term negative effects of chronic inflammation were also investigated in fish muscles by histological analysis.
|Type of Publication:||
A1 Journal article – refereed
|Field of Science:||
1182 Biochemistry, cell and molecular biology
The study was supported by the Russian Science Foundation (#15-14-10008).
© 2018. Published by The Company of Biologists Ltd
This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/3.0), which permits unrestricted use, distribution and reproduction in any medium provided that the original work is properly attributed.