Journal
THERANOSTICS
Volume 9, Issue 25, Pages 7730-7748Publisher
IVYSPRING INT PUBL
DOI: 10.7150/thno.37306
Keywords
MRI; PET; Cancer Immunotherapy; Nanoparticles; Radiotracers; Immunotheranostics; Macrophages
Categories
Funding
- National Institute of Child Health and Human Development (NICHD) [R01HD081123]
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Tumor associated macrophages (TAM) are key players in the cancer microenvironment. Molecular imaging modalities such as MRI and PET can be used to track and monitor TAM dynamics in tumors non-invasively, based on specific uptake and quantification of MRI-detectable nanoparticles or PET-detectable radiotracers. Particular molecular signatures can be leveraged to target anti-inflammatory TAM, which support tumor growth, and pro-inflammatory TAM, which suppress tumor growth. In addition, TAM-directed imaging probes can be designed to include immune modulating properties, thereby leading to combined diagnostic and therapeutic (theranostic) effects. In this review, we will discuss the complementary role of TAM-directed radiotracers and iron oxide nanoparticles for monitoring cancer immunotherapies with PET and MRI technologies. In addition, we will outline how TAM-directed imaging and therapy is interdependent and can be connected towards improved clinical outcomes
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