alexa In vivo Efficacy of PAMAM-Dendrimer-Cisplatin Complexes in SKOV-3 Xenografted Balb/C Nude Mice
ISSN: 2155-952X

Journal of Biotechnology & Biomaterials
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Research Article

In vivo Efficacy of PAMAM-Dendrimer-Cisplatin Complexes in SKOV-3 Xenografted Balb/C Nude Mice

Venkata K Yellepeddi, Kiran Kumar Vangara and Srinath Palakurthi*

Irma Lerma Rangel College of Pharmacy, Texas A&M Health Science Center, 1010 W Ave B, Kingsville, Texas, 78363, USA

Corresponding Author:
Srinath Palakurthi
Irma Lerma Rangel College of Pharmacy
Texas A&M Health Science Center
1010 W Ave B, Kingsville, Texas-78363, USA
Tel: +1 3612210748
Fax: +1 3612210793
E-mail: [email protected]

Received date: November 20, 2012; Accepted date: November 27, 2012; Published date: November 27, 2012

Citation: Yellepeddi VK, Vangara KK, Palakurthi S (2012) In vivo Efficacy of PAMAM-Dendrimer-Cisplatin Complexes in SKOV-3 Xenografted Balb/C Nude Mice. J Biotechnol Biomaterial S13:003. doi:10.4172/2155-952X.S13-003

Copyright: © 2012 Yellepeddi VK, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

Abstract

Loco-regional delivery of cisplatin by Intraperitoneal (IP) administration in ovarian cancer is highly advantageous, since it exposes high concentrations of cisplatin to tumors in the peritoneal cavity. PAMAM-dendrimer-cisplatin complexes are expected to enhance the penetration of tumors in the peritoneal cavity, and aid in enhancing antitumor efficacy of cisplatin. In the present study, PAMAM G4 NH2 and Biotin PAMAM G4 NH2 dendrimer cisplatin complexes were administered intraperitoneally to SKOV xenografted athymic nude mice at a dose of 4 mg/kg. The increase in lifespan of tumor bearing mice and biodistribution of cisplatin in various organs was evaluated after IP administration of cisplatin and dendrimer-cisplatin complexes. The lifespan of mice increased by 41.93% and 25.8%, after treatment with PAMAM G4 NH2 and Biotin PAMAM G4 NH2 dendrimer cisplatin complexes, respectively. A 3-fold increase in the levels of platinum in plasma was observed, after administration of both PAMAM G4 NH2 and Biotin PAMAM G4 NH2 dendrimer cisplatin complexes. Biodistribution studies have shown higher accumulation of platinum in liver, spleen and kidneys with PAMAM G4 NH2 dendrimer-cisplatin complexes. The increased plasma concentration and enhanced tissue accumulation after IP administration of dendrimer-cisplatin complexes offer advantage of administering low dose of cisplatin, which would reduce the dose-dependent toxic effects of cisplatin.

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