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Janotová T, Jalovecká M, Auerová M, Švecová I, Bruzlová P, Maierová V, Kumžáková Z, Čunátová Š, Vlčková Z, Caisová V, Rozsypalová P, Lukáčová K, Vácová N, Wachtlová M, Salát J, Lieskovská J, Kopecký J, Ženka J. The use of anchored agonists of phagocytic receptors for cancer immunotherapy: B16-F10 murine melanoma model. PLoS One 2014; 9:e85222. [PMID: 24454822 PMCID: PMC3890306 DOI: 10.1371/journal.pone.0085222] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2013] [Accepted: 11/25/2013] [Indexed: 01/03/2023] Open
Abstract
The application of the phagocytic receptor agonists in cancer immunotherapy was studied. Agonists (laminarin, molecules with terminal mannose, N-Formyl-methioninyl-leucyl-phenylalanine) were firmly anchored to the tumor cell surface. When particular agonists of phagocytic receptors were used together with LPS (Toll-like receptor agonist), high synergy causing tumour shrinkage and a temporary or permanent disappearance was observed. Methods of anchoring phagocytic receptor agonists (charge interactions, anchoring based on hydrophobic chains, covalent bonds) and various regimes of phagocytic agonist/LPS mixture applications were tested to achieve maximum therapeutic effect. Combinations of mannan/LPS and f-MLF/LPS (hydrophobic anchors) in appropriate (pulse) regimes resulted in an 80% and 60% recovery for mice, respectively. We propose that substantial synergy between agonists of phagocytic and Toll-like receptors (TLR) is based on two events. The TLR ligand induces early and massive inflammatory infiltration of tumors. The effect of this cell infiltrate is directed towards tumor cells, bearing agonists of phagocytic receptors on their surface. The result of these processes was effective killing of tumor cells. This novel approach represents exploitation of innate immunity mechanisms for treating cancer.
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Affiliation(s)
- Tereza Janotová
- Department of Medical Biology, Faculty of Science, University of South Bohemia, České Budějovice, Czech Republic
| | - Marie Jalovecká
- Department of Medical Biology, Faculty of Science, University of South Bohemia, České Budějovice, Czech Republic
| | - Marie Auerová
- Department of Medical Biology, Faculty of Science, University of South Bohemia, České Budějovice, Czech Republic
| | - Ivana Švecová
- Department of Medical Biology, Faculty of Science, University of South Bohemia, České Budějovice, Czech Republic
| | - Pavlína Bruzlová
- Department of Medical Biology, Faculty of Science, University of South Bohemia, České Budějovice, Czech Republic
| | - Veronika Maierová
- Department of Medical Biology, Faculty of Science, University of South Bohemia, České Budějovice, Czech Republic
| | - Zuzana Kumžáková
- Department of Medical Biology, Faculty of Science, University of South Bohemia, České Budějovice, Czech Republic
| | - Štěpánka Čunátová
- Department of Medical Biology, Faculty of Science, University of South Bohemia, České Budějovice, Czech Republic
| | - Zuzana Vlčková
- Department of Medical Biology, Faculty of Science, University of South Bohemia, České Budějovice, Czech Republic
| | - Veronika Caisová
- Department of Medical Biology, Faculty of Science, University of South Bohemia, České Budějovice, Czech Republic
| | - Petra Rozsypalová
- Department of Medical Biology, Faculty of Science, University of South Bohemia, České Budějovice, Czech Republic
| | - Katarína Lukáčová
- Department of Pathology, Regional Hospital, České Budějovice, Czech Republic
| | - Nikol Vácová
- Department of Medical Biology, Faculty of Science, University of South Bohemia, České Budějovice, Czech Republic
| | - Markéta Wachtlová
- Department of Medical Biology, Faculty of Science, University of South Bohemia, České Budějovice, Czech Republic
| | - Jiří Salát
- Department of Virology, Veterinary Research Institute, Brno, Czech Republic
| | - Jaroslava Lieskovská
- Department of Medical Biology, Faculty of Science, University of South Bohemia, České Budějovice, Czech Republic
| | - Jan Kopecký
- Department of Medical Biology, Faculty of Science, University of South Bohemia, České Budějovice, Czech Republic
| | - Jan Ženka
- Department of Medical Biology, Faculty of Science, University of South Bohemia, České Budějovice, Czech Republic
- * E-mail:
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