Abstract
Treatment with chemotherapy such as docetaxel (DTX) is associated with significant toxicity and tumour recurrence. In this study, we developed DTX-entrapped core-cross-linked polymeric micelles (DTX-CCL-PMs, 66nm size) by covalently conjugating DTX to CCL-PMs via a hydrolysable ester bond. The covalent conjugation allowed for sustained release of DTX under physiological conditions invitro. Invivo, DTX-CCL-PMs demonstrated superior therapeutic efficacy in mice bearing MDA-MB-231 tumour xenografts as compared to the marketed formulation of DTX (Taxotere<sup>®</sup>). Strikingly, a single intravenous injection of DTX-CCL-PMs enabled complete regression of both small (~150mm<sup>3</sup>) and established (~550mm<sup>3</sup>) tumours, leading to 100% survival of the animals. These remarkable antitumour effects of DTX-CCL-PMs are attributed to its enhanced tumour accumulation and anti-stromal activity. Furthermore, DTX-CCL-PMs exhibited superior tolerability in healthy rats as compared to Taxotere. These preclinical data strongly support clinical translation of this novel nanomedicinal product for the treatment of cancer.
| Original language | English |
|---|---|
| Pages (from-to) | 370-378 |
| Number of pages | 9 |
| Journal | Biomaterials |
| Volume | 53 |
| DOIs | |
| Publication status | Published - 1 Jan 2015 |
Keywords
- Antitumour efficacy
- Breast cancer
- Docetaxel
- Polymeric micelles
- Tumour targeting