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Calcium Phosphate Nanoparticles: Toxicology and Lymph Node Targeting for Cancer Metastasis Prevention

  • Rajesh A. Pareta
Part of the Nanostructure Science and Technology book series (NST)

Abstract

Applications of nanoparticles in biology are rapidly developing areas in nanomedicine. In cancer therapy, nanoparticles are being used for the detection, diagnosis, and imaging of tumors. Calcium phosphate has long been used as a bone substitute biomaterial and is FDA approved. It is biocompatible, easy to synthesize and relatively cheap. Due to these favorable conditions, it has been investigated for numerous drug delivery of anti-tumor drug applications. Tumor metastases are a major health issue before and after surgical removal of a tumor. Presently, chemotherapy is being used to tackle metastases, but an anti-tumor drug does not differentiate between healthy tissue and tumors. It simply kills all cells it interacts with, and hence there is a need to develop an effective targeted drug delivery system which only releases the drug in tumor cell conditions. Anti-tumor drugs can be easily adsorbed onto the surface of calcium phosphates through electrostatic interactions. Calcium phosphate nanoparticles dissolve in the acidic micro-environment of the tumor, thus, releasing the drug which eventually kills the tumor cells. Most importantly, the calcium phosphate nanoparticles can be targeted to the sentinel lymph node where they can probe tumor metastases. This chapter will cover the history and future promises of using calcium phosphate nanoparticles to treat cancer, including its safety and toxicity in such applications.

Keywords

Sentinel Lymph Node Drug Release Lymphatic Vessel Calcium Phosphate Lymphatic Capillary 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Notes

Acknowledgments

The author would like to thank the Susan G. Komen Foundation which supplied funds to carry out some of the work presented here.

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Copyright information

© Springer Science+Business Media, LLC 2009

Authors and Affiliations

  1. 1.Division of EngineeringBrown UniversityProvidenceUSA

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