Perspectives Offered by Single-Domain Antibodies in Clinical Diagnostic of Pediatric Tumors
The results accrued in the last few years have clearly showed that recombinant antibodies, and specifically single- domain antibodies, represent valid alternatives to conventional IgGs for in vivo imaging. It does not simply mean that antibody fragments can substitute full-length antibodies, but that they are substantially more suitable for some applications and can perform other functions for which no real alternative is available. Brain imaging with multi-functional probes is an evident example, but the promising results obtained with micro-PET and –SPECT in murine models could lead in short time to a revolutionary change in clinical diagnostics. Brilliant applications of single-domain antibody-dependent imaging have enabled us to understand how the tracer mass and avidity can be engineered to modulate pharmacokinetic features such as clearance, tumor penetration, and binding affinity with the aim of optimizing specific responses. The potential of these reagents and the increasing interest for them is evidenced by the exponential growth of publications and the multiplication of the proposed applications in which they are used. This review wishes to provide an update of this fast moving subject and to indicate what may be the next foreseeable technical progress.
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Document Type: Research Article
Publication date: 2013-06-01
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