CXCR4 inhibition synergizes with cytotoxic chemotherapy in gliomas.
The chemokine receptor CXCR4 is expressed in many different cancers. In malignant brain tumors, CXCR4 signaling has been implicated in tumor growth, survival, and migration, and pharmacologic inhibition of CXCR4 results in decreased tumor growth in preclinical models. To understand how CXCR4 inhibitors may be incorporated into clinical therapy, we examined determinants of responsiveness to CXCR4 inhibition. Because optimal use of CXCR4 inhibition will likely be a part of multimodality therapy, we also investigated the efficacy of CXCR4 inhibition combined with conventional cytotoxic chemotherapy.
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