Cited by 124Nanoparticle-Based Drug DeliveryUltrasound and Hyperthermia ApplicationsDendrimers and Hyperbranched Polymers

Effect of radiotherapy and hyperthermia on the tumor accumulation of HPMA copolymer-based drug delivery systems

Lammers, Twan, Peschke, Peter, Kühnlein, Rainer, Subr, Vladimir, Ulbrich, Karel, Debus, Jürgen, Huber, Peter, Hennink, Wim +1 more·2007·Journal of Controlled Release

Abstract

Copolymers of N-(2-hydroxypropyl)methacrylamide (HPMA) are prototypic and well-characterized polymeric drug carriers that have been broadly implemented in the delivery of anticancer therapeutics. In an attempt to improve the tumor accumulation of HPMA copolymer-based drug delivery systems, their in vivo application was combined with radiotherapy and hyperthermia. As the effects of radiotherapy and hyperthermia were considered to depend significantly on the tumor model used, we first analyzed the accumulation of two differently sized HPMA copolymers in three different types of tumors, based on the syngeneic Dunning rat prostate carcinoma model. Subsequently, in these three models, the effects of different doses of radiotherapy and hyperthermia on the tumor accumulation of 31 kDa poly(HPMA), 65 kDa poly(HPMA) and 28 kDa poly(HPMA)-GFLG-doxorubicin were evaluated. It was found that the polymeric drug delivery systems accumulated effectively in all three tumor models. In addition, as opposed to hyperthermia, radiotherapy was found to improve the concentrations of the copolymers independent of the tumor model used. Based on these findings, we conclude that radiotherapy is an effective means for increasing the tumor accumulation of (polymeric) drug delivery systems, and we propose that the combination of carrier-based chemotherapy with radiotherapy holds significant potential for improving the treatment of advanced solid malignancies.

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Crossref · 10.1016/j.jconrel.2006.10.032

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Authors
Lammers, T., Peschke, P., Kühnlein, R., Subr, V., Ulbrich, K., Debus, J., Huber, P., Hennink, W., & Storm, G.
Affiliations
  • German Cancer Research Center (DE)
  • Czech Academy of Sciences, Institute of Macromolecular Chemistry (CZ)
  • Heidelberg University (DE)
  • Utrecht University (NL)
Corresponding author
Lammers, Twan
Venue
Journal of Controlled Release
Publisher
Elsevier BV
Published
2007-02
Volume
117
Issue
3
Pages
333-341
ISSN
0168-3659 (ISSN-L)
OpenAlex
W2054393872
Cited by
124
References
67
Citations by year
2026: 3 · 2025: 4 · 2024: 5 · 2023: 6 · 2022: 4 · 2021: 11 · 2020: 5 · 2019: 8 · 2018: 8 · 2017: 4 · 2016: 11 · 2015: 9 · 2014: 8 · 2013: 8 · 2012: 7
FWCI
1.46
Type
journal article
Language
en
Open access
closed
Locations
  • Journal of Controlled Release (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Physical Sciences › Materials Science › Biomaterials › Nanoparticle-Based Drug Delivery
  • Physical Sciences › Engineering › Biomedical Engineering › Ultrasound and Hyperthermia Applications
  • Physical Sciences › Materials Science › Polymers and Plastics › Dendrimers and Hyperbranched Polymers
Keywords
HPMA copolymer, polymeric drug carriers, radiotherapy, hyperthermia, tumor accumulation, polymeric drug delivery, doxorubicin, combination therapy, solid tumors
MeSH terms
Animals, Antibiotics, Antineoplastic, Antineoplastic Agents, Combined Modality Therapy, Doxorubicin, Drug Carriers, Hyperthermia, Induced, Immunohistochemistry, Iodine Radioisotopes, Male, Methacrylates, Neoplasms, Prostatic Neoplasms, Radiotherapy, Tissue Distribution, Drug Delivery Systems, Rats

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