The University of Torino is very experienced in the field of synthesis and physical-chemical characterisation of imaging probes. Since 1986, research activities have addressed the development of paramagnetic contrast agents for MRI (with projects in High Relaxivity, Blood Pool agents, Targeting and Responsive Probes). In 2001 the fruitful collaboration between chemists, biologists and medical doctors led to the foundation of the Center for Molecular Imaging (CIM) of the University of Torino, now hosted at the dept. of Molecular Biotechnology and Health Sciences. In 2007, a new laboratory was settled at the Bioindustry Park S. Fumero (in close collaboration with industry teams), dedicated to animal imaging (Center of Excellence for Preclinical Imaging– CEIP).
The Center for Molecular Imaging (CIM) of the University of Torino covers all the supply chain from the synthesis and physico-chemical characterization of the imaging probe to the in-cellulo and in-vivo evaluation, including validation by histology, microscopy, FACS, etc. Although CIM carries out research activities using all the available imaging modalities, its internationally recognized specific field of competence deals with the design and testing of MRI probes. All the main classes of MRI agents have been synthetized at this site, including paramagnetic Gd3+ and Mn2+ complexes, CEST (Chemical Exchange Saturation Transfer) agents, nano-sized particles, hyperpolarized 13C and 15N molecules (by Para-Hydrogen Induced Polarization). The site is well-equipped for the in vitro study of the interactions of the MRI probes with the components of the biological environment as well as it is well skilled in all the most efficient cellular labelling procedures (pynocitosis, electroporation, osmotic shock, receptor mediated endocytosis). A large repository of targeting (e.g. to the main epitopes overexpressed on tumor cells) and responsive (to pH, temperature, enzymatic activity, redox properties, etc) probes is available for user access. The repository includes hybrid probes (PET/MRI, SPECT/MRI, OI/MRI).
The main areas of reasearch activity are the following:
- Tumor (breast, liver and prostate cancer) detection, staging and monitoring of therapeutic treatments (Using xenographts, orthotopic and transgenic animal models);
- Cell therapy (pancreatic islets, stem cells, etc)
- Atherosclerotique plaques
- Imaging and therapy (theranostics, BNCT, US-stimulated release)
In the field of PET tracers, UniTO is specialized in Ga-68 containing tracers. The Ga-68 generator is available at the CEIP laboratory where the PET scanners are located. 18FDG and the most used 18F-containing tracers are available from a local supplier whose cyclothron and radiopharmaceutical laboratory are next door to the CEIP laboratory.
The repository of fluorescent probes is well furnished both with commercial agents and with systems synthetized in the UniTO chemistry laboratory.