Journal
NUCLEAR MEDICINE AND BIOLOGY
Volume 34, Issue 7, Pages 791-807Publisher
ELSEVIER SCIENCE INC
DOI: 10.1016/j.nucmedbio.2007.05.009
Keywords
human reporter genes; PET; gamma camera; SPECT; molecular imaging; [I-124]MIBG; [I-124]FIAU
Funding
- NCI NIH HHS [P01 CA59350, P50 CA86438, R24 CA83084] Funding Source: Medline
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The clinical application of positron-emission-tomography-based reporter gene imaging will expand over the next several years. The translation of reporter gene imaging technology into clinical applications is the focus of this review, with emphasis on the development and use of human reporter genes. Human reporter genes will play an increasingly more important role in this development, and it is likely that one or more reporter systems (human gene and complimentary radiopharmaceutical) will take leading roles. Three classes of human reporter genes are discussed and compared: receptors, transporters and enzymes. Examples of highly expressed cell membrane receptors include specific membrane somatostatin receptors (hSSTrs). The transporter group includes the, sodium iodide symporter (hNIS) and the norepinephrine transporter (hNET). The endogenous enzyme classification includes human mitochondrial thymidine kinase 2 (hTK2). In addition, we also discuss the nonhuman dopamine 2 receptor and two viral reporter genes, the wild-type herpes simplex virus I thymidine kinase (HSV1-tk) gene and the HSV1-tk mutant (HSV1-sr39tk). Initial applications of reporter gene imaging in patients will be developed within two different clinical disciplines: (a) gene therapy and (b) adoptive cell-based therapies. These studies will benefit from the availability of efficient human reporter systems that can provide critical monitoring information for adenoviral -based, retroviral -based and lenteviralbased gene therapies, oncolytic bacterial and viral therapies, and adoptive cell-based therapies. Translational applications of noninvasive in vivo reporter gene imaging are likely to include: (a) quantitative monitoring of gene therapy vectors for targeting and transduction efficacy in clinical protocols by imaging the location, extent and duration of transgene expression; (b) monitoring of cell trafficking, targeting, replication and activation in adoptive T-cell and stein/progenitor cell therapies-, (e) and assessments of endogenous molecular events using different inducible reporter gene imaging systems. (C) 2007 Published by Elsevier Inc.
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