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Nanomolar concentration of blood-soluble drag-reducing polymer inhibits experimental metastasis of human breast cancer cells

Authors Ding Z, Joy M, Kameneva MV, Roy P

Received 26 November 2016

Accepted for publication 19 January 2017

Published 24 February 2017 Volume 2017:9 Pages 61—65


Checked for plagiarism Yes

Review by Single anonymous peer review

Peer reviewer comments 3

Editor who approved publication: Professor Pranela Rameshwar

Zhijie Ding,1,* Marion Joy,1,* Marina V Kameneva,1-3 Partha Roy1,3-6

1Department of Bioengineering, 2Department of Surgery, 3McGowan Institute of Regenerative Medicine, 4Department of Pathology, 5Department of Cell Biology, 6Magee Women’s Research Institute, University of Pittsburgh, Pittsburgh, PA, USA

*These authors contributed equally to this work

Abstract: Metastasis is the leading cause of cancer mortality. Extravasation of cancer cells is a critical step of metastasis. We report a novel proof-of-concept study that investigated whether non-toxic blood-soluble chemical agents capable of rheological modification of the near-vessel-wall blood flow can reduce extravasation of tumor cells and subsequent development of metastasis. Using an experimental metastasis model, we demonstrated that systemic administration of nanomolar concentrations of so-called drag-reducing polymer dramatically impeded extravasation and development of pulmonary metastasis of breast cancer cells in mice. This is the first proof-of-principle study to directly demonstrate physical/rheological, as opposed to chemical, way to prevent cancer cells from extravasation and developing metastasis and, thus, it opens the possibility of a new direction of adjuvant interventional approach in cancer.

Keywords: breast cancer, metastasis, extravasation, hemodynamics, drag-reducing polymer, blood cell traffic, microvessels

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