Novel Single Chain Antibodies against MIF for Prostate Cancer Therapy

With the help of the National Cancer Institute we at Ibex Biosciences propose the following Phase SBIR project to evaluate novel camelid VHH antibodies that target macrophage migration inhibitory factor MIF for the treatment of solid tumors MIF is known to play prominent roles in the development of cancer and its expression in humans has shown to correlate with prostate cancer severity Inhibition of MIF biologic activities using small molecule inhibitors or traditional antibodies may be found in the literature However there is only one anti MIF candidate in the clinic Additional approaches to anti MIF treatments are therefore greatly needed Use of a single chain antibody VHH for anti MIF treatment offers many advantages over other therapeutic strategies including increased stability and potential efficacy We have therefore generated several anti MIF VHH antibodies and produced preliminary data that warrant continued development efforts The selected VHH have been demonstrated to bind MIF and preliminary cell based assays show considerable anti MIF At Ibex Biosciences we wish to continue development of these anti MIF VHH antibodies by establishing larger production levels of the VHH and test them in animal models Our work will start with construction and expression of anti MIF VHH and VHH Fc antibodies Succeeding feasibility work will focus on their characterization and demonstration of their functional antibody binding in cell line and animal models While MIF has been demonstrated to play significant roles in many oncologic conditions this evaluation will focus on prostate cancer for initial proof of concept Subsequent development efforts will expand to other solid tumors such as pancreatic lung and others While progress in cancer treatment has been made considerable unmet needs still exist Macrophage migration inhibitory factor MIF is a key player in cancer pathophysiology and its expression in humans has shown to correlate with prostate cancer severity Anti MIF antibodies may hold the key to treating prostate cancer MIF represents a novel target for prostate cancer and VHH anti MIF therapy offers new therapeutic possibilities