Immunotherapeutic vitamin E nanoemulsion synergies the antiproliferative activity of paclitaxel in breast cancer cells via modulating Th1 and Th2 immune response.

Abstract

Paclitaxel (PTX) is used as first line treatment for metastatic breast cancer but the relief comes at a heavy cost in terms of accompanying adverse effects. The pharmaceutical credentials of PTX are further dampened by the intrinsically low aqueous solubility. In order to sideline such insidious tendencies, PTX was incorporated in a vitamin E nanoemulsion using high pressure homogenization. The encapsulation efficiency of PTX in nanoemulsion was 97.81±2.7% and a sustained drug release profile was obtained. PTX loaded nanoemulsion exhibited higher cytotoxicity in breast cancer cell line (MCF-7) when compared to free PTX and marketed formulation (Taxol). Cell cycle arrest study depicted that MCF-7 cells treated with PTX loaded nanoemulsion showed high arrest in G2-M phase. Moreover blank nanoemulsion induced additional apoptosis in breast cancer cells through G1-S arrest by disrupting mitochondrial membrane potential. Cytokine estimation study in macrophages showed that both PTX loaded nanoemulsion and blank nanoemulsion enhanced secretion of IL-12 and downregulated secretion of IL-4 and IL-10. Results suggest that inclusion of vitamin E in nanoemulsion opened multiple complementary molecular effects which not only magnified the principle antiproliferative activity of PTX but also independently showcased potential in restoring the proactive nature of the breast cancer slackened chronic immune response. In-vivo anticancer activity showed significantly improved efficacy of PTX loaded nanoemlsion compare to Taxol and free PTX. The list of plausible advantages of PTX nanoemulsification was further substantiated by acceptable haemolytic potential, reduced in-vivo toxicity and conveniently modified pharmacokinetic profile in which the AUC and MRT were extended considerably. Overall, there were strong evidences that developed formulation can serve as a viable alternative to currently available PTX options.

DOI: 10.1016/j.jconrel.2014.10.010
05001000201520162017
Citations per Year

317 Citations

Semantic Scholar estimates that this publication has 317 citations based on the available data.

See our FAQ for additional information.

Cite this paper

@article{Pawar2014ImmunotherapeuticVE, title={Immunotherapeutic vitamin E nanoemulsion synergies the antiproliferative activity of paclitaxel in breast cancer cells via modulating Th1 and Th2 immune response.}, author={Vivek Pawar and Samir B Panchal and Y. Singh and Jaya Gopal Meher and Komal Sharma and Pankaj Kumar Singh and Himangshu Kousik Bora and Akhilesh Kumar Singh and Dipak Datta and Manish K Chourasia}, journal={Journal of controlled release : official journal of the Controlled Release Society}, year={2014}, volume={196}, pages={295-306} }