University of South Florida

Joseph Wahle

William Garrow Kerr

Caroline Desponts

John Ninos

The present invention provides a method of mediating hypo-activation of NK cells. Methods of the present invention comprise administering to a subject an effective amount of broad acting phosphotase inhibitor, such as sodium orthovanadate, SHP specific inhibitor. In one embodiment, the SHP specific inhibitor is NSC119910.

Method of activating NK cells

The instant invention teaches the inhibition of SHIP expression, or function, for the increased efficacy of autologous stem cell transplants. In another embodiment, interference with SHIP function can be used to temporarily expand and mobilize the hematopoietic stem cell compartment to assist with leukapheresis, to promote hematopoietic recovery after myeloablation treatments, to deplete target stem cell clones (such a leukemic clones and other tumor stem cell types), and to deplete, or damage, the repopulating ability of the endogenous hematopoietic stem cell pool in order to allow transplanted hematopoietic stem cells to better home and engraft and to promote in vivo expansion and mobilization of other organ-specific stem cell populations (e.g., mesenchymal, mammary).

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St. Louis, MO, United States of America

Joseph Wahle