Cited by 499Cancer Cells and MetastasisAngiogenesis and VEGF in CancerCancer, Hypoxia, and Metabolism

The distribution of the anticancer drug Doxorubicin in relation to blood vessels in solid tumors

Primeau, Andrew J., Rendon, Augusto, Hedley, David, Lilge, Lothar, Tannock, Ian F.·2005·Clinical Cancer Research

Abstract

Purpose Anticancer drugs gain access to solid tumors via the circulatory system and must penetrate the tissue to kill cancer cells. Here, we study the distribution of doxorubicin in relation to blood vessels and regions of hypoxia in solid tumors of mice. Experimental design The distribution of doxorubicin was quantified by immunofluorescence in relation to blood vessels (recognized by CD31) of murine 16C and EMT6 tumors and human prostate cancer PC-3 xenografts. Hypoxic regions were identified by injection of EF5. Results The concentration of doxorubicin decreases exponentially with distance from tumor blood vessels, decreasing to half its perivascular concentration at a distance of about 40 to 50 mum, The mean distance from blood vessels to regions of hypoxia is 90 to 140 microm in these tumors. Many viable tumor cells are not exposed to detectable concentrations of drug following a single injection. Conclusions Limited distribution of doxorubicin in solid tumors is an important and neglected cause of clinical resistance that is amenable to modification. The technique described here can be adapted to studying the distribution of other drugs within solid tumors and the effect of strategies to modify their distribution.

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Crossref · 10.1158/1078-0432.ccr-05-1664

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Authors
Primeau, A. J., Rendon, A., Hedley, D., Lilge, L., & Tannock, I. F.
Affiliations
  • University of Toronto (CA)
  • 2Biophysics and Bioimaging, and
Venue
Clinical Cancer Research
Published
2005-12-15
Volume
11
Issue
24
Pages
8782-8788
ISSN
  • 1078-0432 (ISSN-L)
  • 1557-3265
OpenAlex
W2093916414
Cited by
499
References
1
Citations by year
2026: 14 · 2025: 11 · 2024: 19 · 2023: 25 · 2022: 27 · 2021: 20 · 2020: 24 · 2019: 30 · 2018: 32 · 2017: 38 · 2016: 40 · 2015: 27 · 2014: 27 · 2013: 45 · 2012: 31
FWCI
3.89
Type
journal article
Language
en
Open access
closed
Locations
  • Clinical Cancer Research (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Health Sciences › Medicine › Oncology › Cancer Cells and Metastasis
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Angiogenesis and VEGF in Cancer
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cancer Research › Cancer, Hypoxia, and Metabolism
Keywords
doxorubicin, tumor vasculature, tumor hypoxia, drug penetration, chemoresistance, CD31, EF5, EMT6 tumor, mouse tumors
MeSH terms
Animals, Antibiotics, Antineoplastic, Blood Vessels, Doxorubicin, Humans, Microscopy, Neoplasm Transplantation, Neoplasms, Drug Resistance, Neoplasm, Xenograft Model Antitumor Assays, Mice

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