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Patent Evaluation

Formulation and dosage of therapeutic nanosuspension for active targeting of docetaxel (WO 2014210485A1)

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Pages 745-749 | Received 23 Jul 2015, Accepted 22 Mar 2016, Published online: 18 Jun 2016
 

ABSTRACT

Non-specificity and drug resistance are two major limitations of all chemotherapeutic agents. Ligand-conjugated nanomedicine is the most versatile approach for targeted cancer therapy. Attaching a targeting ligand to the nanoparticle surface increases drug concentration at the desired sites, decreases the dose needed and lessens side effects. The subject of this patent evaluation describes the preparation of a therapeutic nanosuspension of an anticancer drug, docetaxel (DTX). The nanoparticle matrix comprised a polylactic acid-polyethylene glycol block copolymer (PLA-PEG). The nanoparticles were actively directed towards prostate-specific membrane antigen (PSMA) over-expressing cancer cells using a targeting ligand S,S-2-{3-[1-carboxy-5-amino-pentyl-]ureido}-pantanedioic acid (GL2). The dose-limiting toxicity and maximum tolerated dose were determined for GL2-conjugated and DTX-loaded polymeric nanosuspensions. The efficacy of nanosuspensions was evaluated in people with various cancer types. The investigators claim the method of preparation of therapeutic nanosuspension, optimized composition of the formulation and dosage regimen for the clinical studies to effectively treat gastroesophageal and breast cancers.

Declaration of interest

Deep Pooja was awarded a Senior Research Fellowship by the Council of Scientific and Industrial Research (CSIR), New Delhi. The work was supported by an Advanced Drug Delivery System project (CSC-0302) of CSIR-IICT, Hyderabad. The authors have no other relevant affiliations or financial involvement with any organization or entity with a financial interest in, or financial conflict with, the subject matter or materials discussed in the manuscript, apart from those disclosed.

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