The Penn State Research Foundation

Sriram S Shanmugavelandy

Mark Kester

Jill P Smith

James H Adair

Todd Fox

Gail L Matters

Thomas T Morgan

Brian M Barth

Erhan I Altinoglu

Rahul Sharma

James M Kaiser

Christopher McGovern

Non-aggregating resorbable calcium phosphosilicate nanoparticles (CPNPs) are bioconjugated to targeting molecules that are specific for particular cells. The CPNPs are stable particles at normal physiological pH. Chemotherapy and imaging agents may be integrally formed with the CPNPs so that they are compartmentalized within the CPNPs. In this manner, the agents are protected from interaction with the environment at normal physiological pH. However, once the CPNPs have been taken up, at intracellular pH, the CPNPs dissolve releasing the agent. Thus, chemotherapeutic or imaging agents are delivered to specific cells and permit the treatment and/or imaging of those cells. Use of the bioconjugated CPNPs both limits the amount of systemic exposure to the agent and delivers a higher concentration of the agent to the cell. The methods and principals of bioconjugating CPNPs are taught by examples of bioconjugation of targeting molecules for breast cancer, pancreatic cancer, and leukemia.

Bioconjugation of calcium phosphosilicate nanoparticles for selective targeting of cells in vivo

Described herein are pharmaceutical compositions according to aspects of the present invention which include one or more hydrophilic antineoplastic chemotherapeutics, such as vinca alkyloid antineoplastic chemotherapeutics, encapsulated in ceramide anionic liposomes. Methods of treatment of a subject having cancer using the pharmaceutical compositions are described, along with methods of making ceramide anionic liposomes which encapsulate one or more hydrophilic antineoplastic chemotherapeutics in the aqueous interior of the ceramide anionic liposomes.

Ceramide anionic liposome compositions

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Hershey, PA, United States of America

Sriram S Shanmugavelandy