The Influence of Cytotoxicity of Macromolecules and of VEGF Gene Modulated Vascular Permeability on the Enhanced Permeability and Retention Effect in Resistant Solid Tumors
10.1023/A:1007500412442 Cite this article as: Minko, T., Kopečkova, P., Pozharov, V. et al. Pharm Res (2000) 17: 505. doi:10.1023/A:1007500412442 Abstract . To study the influence of cytotoxicity of macromolecules, Purpose VEGF gene expression, and vascular permeability on the enhancedpermeability and retention (EPR) effect. . Mice bearing xenografts of A2780 multidrug resistant humanovarian carcinoma were treated by free doxorubicin (DOX) andN-(2-hydroxypropyl)methacrylamide (HPMA) copolymer-bound DOX(P(GFLG)-DOX), Texas Red (P-TR), and FITC (P-FITC). Antitumoractivity, drug distribution in tumor, vascular permeability, Methods VEGF geneexpression, and DNA fragmentation were studied. . The accumulation of free DOX led to the Results VEGF geneoverexpression and increased the vascular permeability, which in turnenhanced the drug accumulation in the same location. This positivefeedback loop led to a highly inhomogeneous distribution of the drugwithin the tumor. In contrast, P(GFLG)-DOX down-regulated the VEGF gene and decreased vascular permeability. This negativefeedback seemed to prevent additional drug accumulation in dead necrotictissue, resulting in a more uniform drug distribution and enhanced theantitumor activity P(GFLG)-DOX. . The EPR effect significantly differed for macromoleculescontaining DOX when compared to macromolecules without drug. Thecytotoxicity of P(GFLG)-DOX amplified the EPR effect, led to amore homogenous distribution of the drug, increased the average drugconcentration in tumor and augmented its efficacy. Conclusions HPMA copolymer enhanced permeability and retention effect VEGF gene antitumor activity necrosis doxorubicin REFERENCES
T. Minko, P. Kopečková, V. Pozharov, and J. Kopeček. HPMA copolymer bound adriamycin overcomes
gene encoded resistance in a human ovarian carcinoma cell line.
J. Contr. Rel.
T. Minko, P. Kopečková, and J. Kopeček. Chronic exposure to HPMA copolymer-bound adriamycin does not induce multidrug resistance in a human ovarian carcinoma cell line.
J. Contr. Rel.
T. Minko, P. Kopečková, and J. Kopeček. Comparison of the anticancer effect of free and HPMA copolymer-bound adriamycin in human ovarian carcinoma calls.
T. Minko, P. Kopečková, and J. Kopeček. Efficacy of the chemotherapeutic action of HPMA coppolymer bound doxorubicin in a solid tumor model of ovarian carcinoma.
Int. J. Cancer,
Y. Matsumura and H. Maeda. A new concept for macromolecular therapeutics in cancer chemotherapy: Mechanism of tumoritropic accumulation of proteins and the antitumor agent SMANCS.
H. Maeda, L. M. Seymour, and Y. Miyamoto. Conjugates of anticancer agents and polymers: advantages of macromolecular therapeutics in vivo.
Y. Noguchi, J. Wu, R. Duncan, J. Strohalm, K. Ulbrich, T. Akaike, and H. Maeda. Early phase tumor accumulation of macromolecules: A great difference in clearance rate between tumor and normal tissues.
Jpn. J. Cancer Res.
J. Kopeček, P. Rejmanová, J. Strohalm, K. Ulbrich, B. Ríhová, V. ChytrÝ , J. B. Lloyd, and R. Duncan. Synthetic polymeric drugs. U.S. Pat. 5,037,883 (Aug. 6, 1991).
V. G. Omelyanenko, P. Kopečová, C. Gentry, J.-G. Shiah, and J. Kopeček. HPMA copolymer-anticancer drug-OV-TL16 antibody conjugates. 1. Influence of the methods of synthesis on the binding affinity to OVCAR-3 ovarian carcinoma cells in vitro.
J. Drug Target.
V. Omelyanenko, P. Kopečková, C. Gentry, and J. Kopeček. Targetable HPMA copolymer-adriamycin conjugates. Recognition, internalization, and subcellular fate.
J. Contr. Rel.
E. Tischler, R. Mitchell, T. Hartman, M. Silva, D. Gospodarowicz, J. C. Fiddes, and J. A. Abraham. The human gene for vascular endothelial growth factor: Multiple protein forms are encoded through alternative exon aplicing.
J. Biol. Chem.
B. C. Trauth, C. Klas, A. M. Peters, S. Matzku, P. Moller, W. Falk, K. M. Debatin, and P. H. Krammer. Monoclonal antibody· mediated tumor regression by induction of apoptosis.
H. F. Dvorak, J. A. Nagy, J. T. Dvorak, and A. M. Dvorak. Identification and characterization of the blood vessels of solid tumors that are leaky to circulating macromolecules.
Am. J. Pathol.
F. Yuan, M. Dellian, D. Fukumura, M. Leuning, D. A. Berk, V. P. Torchilin, and R. K. Jain. Vascular permeability in a human tumor xenograft: molecular size dependence and cutoff size.
L. E. Benjamin, R. Goljanin, A. Irin, D. Pode, and E. Keshet. Selective ablation of immature blood vessels in established human tumors follows vascular endothelial growth factor withdrawal.
J. Clin. Invest.
S. Mesiano, N. Ferrara, and R. B. Jaffe. Role of vascular endothelial growth factor in ovarian cancer.
Am. J. Pathol.
J.-G. Shiah, Y. Sun, C. M. Peterson, and J. Kopeček. Biodistribution of free and N-(2-hydroxypropyl)methacrylamide copolymer-bound mesochlorin e
and adriamycin in nude mice bearing human ovarian carcinoma OVCAR-3 xenografts.
J. Contr. Rel.
Y. Tabata, T. Kawai, Y. Murakami, and Y. Ikada. Electric charge influence of dextran derivatives on their tumor accumulation after intravenous injection.
S. K. Hobbs, W. L. Monsky, F. Yuan, W. G. Roberts, L. Griffith, V. P. Torchilin, and R. K. Jain. Regulation of transport pathways in tumor vessels: Role of tumor type and microenvironment.
Proc. Natl. Acad. Sci.
Y. Murakami, Y. Tabata, and Y. Ikada, Effect of the molecular weight of water-soluble polymers on accumulation at an inflammatory site following intravenous injection.
: 231–238 (1996).
Z-R. Lu, P. Kopečková, Z. Wu, and J. Kopeček. Synthesis of semitelechelic poly[N-(2-hydroxypropyl)methacrylamide] by radical polymerization in the presence of alkyl mercaptans.
Macromol. Chem. Phys.
Y. Takakura and M. Hashida. Macromolecular carrier systems for targeted drug delivery: pharmacokinetic consideration on biodistribution.
H. M. Sowter, A. N. Corps, A. L. Evans, D. E. Clark, D. S. Charnok-Jones, and S. K. Smith. Expression and localization of the vascular endothelial growth factor family in ovarian epithelial tumors.
N. Ferrara and W. J. Henzel. Pituitary follicular cells secrete a novel heparin-binding growth factor specific for vascular endothelial cells.
Biochem. Biophys. Res. Commun.
N. Ravindranath, L. Little-Ihrig, H. S. Phillips, N. Ferrara, and A. J. Zeleznik. Vascular endothelial growth factor messenger ribonucleic acid expression in the primate ovary.
T. A. Olson, D. Mohanraj, L. F. Carson, and S. Ramakrishnan. Vascular permeability gene expression in normal and neoplastic human ovaries.
D. R. Senger, C. A. Perruzzi, J. Feder, and H. F. Dvorak. A highly conserved vascular permeability factor secreted by a variety of human and rodent tumor cell lines.
B. Berse, L. F. Brown, L. Van De Watter, A. Papadopoulos-Sergiou, C. A. Perruzzi, E. J. Manseau, H. F. Dvorak, and D. R. Senger. Vascular permeability factor (vascular endothelial growth factor) gene is expressed differentially in normal tissues, macrophages, and tumors.
Mol. Biol. Cell
H. Maeda, J. Wu, S. Tamaka, and T. Akaike. Modulation of tumor vascular permeability and EPR effect for macromolecular therapeutics. In 9th
International Symposium on Recent Advances in Drug Delivery Systems, February 22¶ 25, 1999, Salt Lake City, USA, p. 114–117.
J. Lankelma, H. Dekker, R. F. Luque, S. Luykx, K. Hoekman, P. van der Valk, P. J. van Diest, and H. M. Pinedo. Doxorubicin gradients in human breast cancer.
Clin. Cancer Res.
Google Scholar Copyright information
© Plenum Publishing Corporation 2000