Co-formulation of P-glycoprotein Substrate and Inhibitor in Nanocarriers: An Emerging Strategy for Cancer Chemotherapy

ISSN: 1873-5576 (Online)
ISSN: 1568-0096 (Print)

Volume 15, 9 Issues, 2015

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Current Cancer Drug Targets

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Ruiwen Zhang
Texas Tech University Health Sciences Center
1300 Coulter Drive
Amarillo, TX 79106

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Co-formulation of P-glycoprotein Substrate and Inhibitor in Nanocarriers: An Emerging Strategy for Cancer Chemotherapy

Current Cancer Drug Targets, 14(5): 419-433.

Author(s): Ankit Saneja, Ravindra Dhar Dubey, Noor Alam, Vaibhav Khare and Prem N Gupta.

Affiliation: Formulation & Drug Delivery Division, CSIR-Indian Institute of Integrative Medicine, Canal Road, Jammu-Tawi-180001, India.


Scientific community is striving to understand the role of P-glycoprotein (P-gp) in drug discovery programs due to its impact on pharmacokinetic and multi-drug resistance (MDR) of anticancer drugs. A number of efforts to resolve the crystal structure and understanding the mechanism of P-gp mediated efflux have been made. Several generations of Pgp inhibitors have been developed to tackle this multi-specific efflux protein. Unfortunately, these inhibitors lack selectivity, exhibit poor solubility and severe pharmacokinetic interactions restricting their clinical use. The nanocarrier drug delivery systems (NDDS) are receiving increasing attention for P-gp modulating activity of pharmaceutical excipients which are used in their fabrication. In addition, NDDS can enhance the solubility and exhibited ability to bypass P-gp mediated efflux. The co-formulation of P-gp inhibitors and substrate anticancer drugs in single drug delivery system offers the advantage of bypassing P-gp mediated drug efflux as well as inhibiting the P-gp. Moreover, severe pharmacokinetic interactions between P-gp inhibitor and substrate anticancer drugs could be avoided by using this strategy. In this article we describe the co-formulation strategies using nanocarriers for modulation of pharmacokinetics as well as multi-drug resistance of anticancer drugs along with the challenges in this area.


Anticancer drugs, co-formulation, multi-drug resistance, nanocarriers, P-glycoprotein inhibitor.

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Article Details

Volume: 14
Issue Number: 5
First Page: 419
Last Page: 433
Page Count: 15
DOI: 10.2174/1568009614666140407112034

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