Please use this identifier to cite or link to this item:
http://doi.org/10.25358/openscience-705| Authors: | Beck, Simone Schultze, Jennifer Räder, Hans-Joachim Holm, Regina Schinnerer, Meike Barz, Matthias Koynov, Kaloian Zentel, Rudolf |
| Title: | Site-specific DBCO modification of DEC205 antibody for polymer conjugation |
| Online publication date: | 23-Jan-2019 |
| Year of first publication: | 2018 |
| Language: | english |
| Abstract: | The design of multifunctional polymer-based vectors, forming pDNA vaccines, offers great potential in cancer immune therapy. The transfection of dendritic immune cells (DCs) with tumour antigen-encoding pDNA leads to an activation of the immune system to combat tumour cells. In this work, we investigated the chemical attachment of DEC205 antibodies (aDEC205) as DC-targeting structures to polyplexes of P(Lys)-b-P(HPMA). The conjugation of a synthetic block copolymer and a biomacromolecule with various functionalities (aDEC205) requires bioorthogonal techniques to avoid side reactions. Click chemistry and in particular the strain-promoted alkyne-azide cycloaddition (SPAAC) can provide the required bioorthogonality. With regard to a SPAAC of both components, we firstly synthesized two different azide-containing block copolymers, P(Lys)-b-P(HPMA)-N3(stat) and P(Lys)-b-P(HPMA)-N3(end), for pDNA complexation. In addition, the site-specific incorporation of ring-strained dibenzocyclooctyne (DBCO) moieties to the DEC205 antibody was achieved by an enzymatic strategy using bacterial transglutaminase (BTG). The chemical accessibility of DBCO molecules within aDEC205 as well as the accessibility of azide-functionalities on the polyplex’ surface were investigated by various SPAAC experiments and characterized by fluorescence correlation spectroscopy (FCS). |
| DDC: | 540 Chemie 540 Chemistry and allied sciences |
| Institution: | Johannes Gutenberg-Universität Mainz |
| Department: | FB 09 Chemie, Pharmazie u. Geowissensch. |
| Place: | Mainz |
| ROR: | https://ror.org/023b0x485 |
| DOI: | http://doi.org/10.25358/openscience-705 |
| URN: | urn:nbn:de:hebis:77-publ-588003 |
| Version: | Published version |
| Publication type: | Zeitschriftenaufsatz |
| License: | CC BY |
| Information on rights of use: | https://creativecommons.org/licenses/by/4.0/ |
| Journal: | Polymers 10 2 |
| Pages or article number: | Art. 141 |
| Publisher: | MDPI |
| Publisher place: | Basel |
| Issue date: | 2018 |
| ISSN: | 2073-4360 |
| Publisher URL: | http://dx.doi.org/10.3390/polym10020141 |
| Publisher DOI: | 10.3390/polym10020141 |
| Appears in collections: | JGU-Publikationen |
