Thermoresponsive .beta.-glucan-based polymers for bimodal immunoradiotherapy - Are they able to promote the immune system?

Loukotová, Lenka; Kučka, Jan; Rabyk, Mariia; Höcherl, Anita; Venclíková, Kristýna; Janoušková, Olga; Páral, P.; Kolářová, V.; Heizer, T.; Šefc, L.; Štěpánek, Petr; Hrubý, Martin

doi:https://dx.doi.org/10.1016/j.jconrel.2017.10.010

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Thermoresponsive .beta.-glucan-based polymers for bimodal immunoradiotherapy - Are they able to promote the immune system?

1.

SYSNO ASEP	0480890
Document Type	J - Journal Article
R&D Document Type	Journal Article
Subsidiary J	Článek ve WOS
Title	Thermoresponsive .beta.-glucan-based polymers for bimodal immunoradiotherapy - Are they able to promote the immune system?
Author(s)	Loukotová, Lenka (UMCH-V)_{RID, ORCID} Kučka, Jan (UMCH-V)_{RID, ORCID} Rabyk, Mariia (UMCH-V)_{RID, ORCID} Höcherl, Anita (UMCH-V)_RID Venclíková, Kristýna (UMCH-V)_RID Janoušková, Olga (UMCH-V)_{RID, SAI, ORCID} Páral, P. (CZ) Kolářová, V. (CZ) Heizer, T. (CZ) Šefc, L. (CZ) Štěpánek, Petr (UMCH-V)_{RID, ORCID} Hrubý, Martin (UMCH-V)_{RID, ORCID}
Source Title	Journal of Controlled Release. - : Elsevier - ISSN 0168-3659 Roč. 268, 28 December (2017), s. 78-91
Number of pages	14 s.
Language	eng - English
Country	NL - Netherlands
Keywords	beta-glucan ; polyoxazoline ; multimodal cancer therapy
Subject RIV	CF - Physical ; Theoretical Chemistry
OECD category	Physical chemistry
R&D Projects	GA16-02870S GA ČR - Czech Science Foundation (CSF)
	GA16-03156S GA ČR - Czech Science Foundation (CSF)
	NV15-25781A GA MZd - Ministry of Health (MZ)
	7AMB16FR042 GA MŠMT - Ministry of Education, Youth and Sports (MEYS)
Institutional support	UMCH-V - RVO:61389013
UT WOS	000417329800008
EID SCOPUS	85031796269
DOI	https://doi.org/10.1016/j.jconrel.2017.10.010
Annotation	A conceptually new bimodal immunoradiotherapy treatment was demonstrated using thermoresponsive polymer .beta.-glucan-graft-poly(2-isopropyl-2-oxazoline-co-2-butyl-2-oxazoline) bearing complexes of 1,4,7,10-tetraazacyclododecane-1,4,7,10-tetraacetic acid with yttrium-90(III) at the graft ends. The behavior of this thermoresponsive polymer in aqueous solutions was studied, and it showed the appropriate cloud point temperature for brachytherapy applications. The polymer was tested in vitro, and it exhibited nontoxicity and active uptake into cancer cells and macrophages with colocalization in the lysosomes and macrophagosomes. Moreover, the observed oxidative burst response of the leukocytes established the immunostimulatory properties of the polymer, which were also studied in vivo after injection into the thigh muscles of healthy mice. The subsequent histological evaluation revealed the extensive immune activation reactions at the site of injection. Furthermore, the production of tumor necrosis factor .alpha. induced by the prepared polymer was observed in vitro, denoting the optimistic prognosis of the treatment. The biodistribution study in vivo indicated the formation of the polymer depot, which was gradually degraded and excluded from the body. The radiolabeled polymer was used during in vivo antitumor efficiency experiments on mice with EL4 lymphoma. The immunoradiotherapy group (treated with the radiolabeled polymer) demonstrated the complete inhibition of tumor growth during the beginning of the treatment. Moreover, 7 of the 15 mice were completely cured in this group, while the others exhibited significantly prolonged survival time compared to the control group. The in vivo experiments indicated the considerable synergistic effect of using immunoradiotherapy compared to separately using immunotherapy or radiotherapy.
Workplace	Institute of Macromolecular Chemistry
Contact	Eva Čechová, cechova@imc.cas.cz ; Tel.: 296 809 358
Year of Publishing	2018

Number of the records: 1