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Abstract

The invention provides a method of reducing the proliferation of a neoplastic cell. The method consists of contacting the neoplastic cell with a cytotoxic or cytostatic binding agent specifically reactive with an aberrantly expressed vesicular membrane associated neoplastic cell specific internalizing antigen. The neoplastic cell specific internalizing anitgen can be selected from the group consisting of lamp-2 and limp II families of lysosomal integral membrane proteins. Also provided is a method of intracellular targeting of a cytotoxic or cytostatic agent to a neoplastic cell population. The method consists of administering to an individual containing a neoplastic cell population a cytotoxic or cytostatic binding agent specifically reactive with an aberrantly expressed vesicular membrane associated neoplastic cell specific internalizing antigen that is expressed by the neoplastic cell population, wherein the cytotoxic or cytostatic binding agent is bound by the neoplastic cell specific internalizing antigen and is internalized into the intracellular compartment. A method of reducing tumor growth through the intracellular targeting of a cytotoxic agent is also provided.

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First Claim