Application of PEG-Covered Non-Biodegradable Polyelectrolyte Microcapsules in the Crustacean Circulatory System on the Example of the Amphipod Eulimnogammarus verrucosus


Layer-by-layer assembled microcapsules are promising carriers for the delivery of various pharmaceutical and sensing substances into specific organs of different animals, but their utility in vivo inside such an important group as crustaceans remains poorly explored. In the current study, we analyzed several significant aspects of the application of fluorescent microcapsules covered by polyethylene glycol (PEG) inside the crustacean circulatory system, using the example of the amphipod Eulimnogammarus verrucosus. In particular, we explored the distribution dynamics of visible microcapsules after injection into the main hemolymph vessel; analyzed the most significant features of E. verrucosus autofluorescence; monitored amphipod mortality and biochemical markers of stress response after microcapsule injection, as well as the healing of the injection wound; and finally, we studied the immune response to the microcapsules. The visibility of microcapsules decreased with time, however, the central hemolymph vessel was confirmed to be the most promising organ for detecting the spectral signal of implanted microencapsulated fluorescent probes. One million injected microcapsules (sufficient for detecting stable fluorescence during the first hours after injection) showed no toxicity for six weeks, but in vitro amphipod immune cells recognize the PEG-coated microcapsules as foreign bodies and try to isolate them by 12 h after contact.

Publication DOI:
Divisions: College of Engineering & Physical Sciences > School of Engineering and Technology > Mechanical, Biomedical & Design
College of Engineering & Physical Sciences
Additional Information: © 2019 by the authors. Licensee MDPI, Basel, Switzerland. This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0). Funding: Russian Science Foundation (#17-14-01063), the Russian Foundation for Basic Research (#19-54-04008) and Lake Baikal Foundation (#02-3/14), Ministry of Science and Higher Education of Russia and Deutscher Akademischer Austauschdienst (“Goszadanie”: #6.13468.2019/13.2).
Uncontrolled Keywords: Biocompatibility,Immunity,Implantable sensors,Invertebrate,Layer-by-layer,Primary cell cultures,Chemistry(all),Polymers and Plastics
Publication ISSN: 2073-4360
Last Modified: 08 Dec 2023 11:13
Date Deposited: 31 Jul 2019 09:22
Full Text Link:
Related URLs: https://www.mdp ... -4360/11/8/1246 (Publisher URL)
http://www.scop ... tnerID=8YFLogxK (Scopus URL)
PURE Output Type: Article
Published Date: 2019-07-27
Accepted Date: 2019-07-24
Authors: Shchapova, Ekaterina
Nazarova, Anna
Gurkov, Anton
Borvinskaya, Ekaterina
Rzhechitskiy, Yaroslav
Dmitriev, Ivan
Meglinski, Igor (ORCID Profile 0000-0002-7613-8191)
Timofeyev, Maxim



Version: Published Version

License: Creative Commons Attribution

| Preview

Export / Share Citation


Additional statistics for this record