Abstract: The invention provides a method for predicting the susceptibility of a patient suffering from a cancer or a myeloid-mediated disease to immunotherapy. Furthermore, the invention provides a method for treating a patient suffering from a cancer or a myeloid-mediated disease with immunotherapy. In accordance with these embodiments, the inventive method includes assaying myeloid cells obtained from the patient prior to treatment for the expression of CXCR3. The invention also provides a genetically engineered myeloid cell (GEMy) in which the expression of CXCR3 is modulated (up- or down-regulated). The invention further provides a composition comprising the inventive GEMy and a pharmaceutically acceptable carrier. The invention also provides a method for treating a patient in need of immunotherapy comprising administering the inventive composition to a patient.

Abstract: Provided herein are methods of determining whether a subject will respond to a treatment for a neoplasia, neoplastic disorder, tumor, cancer or malignancy, the method comprising detecting the presence or amount of CDS 3 expressing cells in a biological sample from the subject, comparing the measured presence or amount to a reference presence or amount, wherein a modified measured presence or amount as compared to the reference presence or amount is indicative that the subject will or will not respond to the treatment for a neoplasia, neoplastic disorder, tumor, cancer or malignancy. Also described herein are methods of treating a neoplasia, neoplastic disorder, tumor, cancer or malignancy in a subject, the method comprising modulating CDS 3 activity or expression in a myeloid cell, or alternatively, comprising administering a population of CD33hi monocytes or CD33hi macrophages.

Abstract: Method and compositions for modulating specific populations of monocytes or macrophages are disclosed. Methods include, in certain embodiments, modulating expression or activity of Nr4a1 (Nur77). Compositions disclosed herein include agonistic and antagonistic agents that modulate expression or activity of Nur77 and uses thereof. In various embodiments, methods of treating certain disorders and diseases related to aberrant monocyte or macrophage development are provided. In further various embodiments, methods of identifying agents that modulate specific populations of monocytes or macrophages, and agents that modulate Nur77 activity and/or expression are provided.