Chemokine ligand-receptor interactions play a pivotal role in cell attraction and cellular trafficking, both in normal tissue homeostasis and in disease. In cancer, chemokine receptor-4 (CXCR4) expression is an adverse prognostic factor. Early clinical studies suggest that targeting CXCR4 with suitable high-affinity antagonists might be a novel means for therapy. In addition to the preclinical evaluation of [68Ga]Pentixafor in mice bearing human lymphoma xenografts as an exemplary CXCR4-expressing tumor entity, we report on the first clinical applications of [68Ga]Pentixafor-Positron Emission Tomography as a powerful method for CXCR4 imaging in cancer patients. [68Ga]Pentixafor binds with high affinity and selectivity to human CXCR4 and exhibits a favorable dosimetry. [68Ga]Pentixafor-PET provides images with excellent specificity and contrast. This non-invasive imaging technology for quantitative assessment of CXCR4 expression allows to further elucidate the role of CXCR4/CXCL12 ligand interaction in the pathogenesis and treatment of cancer, cardiovascular diseases and autoimmune and inflammatory disorders.
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PublikationstypArtikel: Journalartikel
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SchlagwörterCXCR4; chemokine receptor; positron emission tomography; lymphoma; in vivo imaging; Chemokine Receptor Cxcr4; Acute Myeloid-leukemia; Positron-emission-tomography; Acute Myelogenous Leukemia; Human Cancer Xenografts; B-cell Lymphoma; Antagonist Plerixafor; Myocardial-infarction; Therapeutic Target; Prognostic Value