@article {10798, title = {Imaging and therapy of ovarian cancer: clinical application of nanoparticles and future perspectives.}, journal = {Theranostics}, volume = {8}, year = {2018}, month = {2018}, pages = {4279-4294}, abstract = {

Despite significant advances in cancer diagnostics and treatment, ovarian cancers (OC) continue to kill more than 150,000 women every year worldwide. Due to the relatively asymptomatic nature and the advanced stage of the disease at the time of diagnosis, OC is the most lethal gynecologic malignancy. The current treatment for advanced OC relies on the synergistic effect of combining surgical cytoreduction and chemotherapy; however, beside the fact that chemotherapy resistance is a major challenge in OC management, new imaging strategies are needed to target microscopic lesions and improve both cytoreductive surgery and patient outcomes. In this context, nanostructured probes are emerging as a new class of medical tool that can simultaneously provide imaging contrast, target tumor cells, and carry a wide range of medicines resulting in better diagnosis and therapeutic precision. Herein we summarize several exemplary efforts in nanomedicine for addressing unmet clinical needs.

}, issn = {1838-7640}, doi = {10.7150/thno.26345}, author = {Di Lorenzo, Giovanni and Ricci, Giuseppe and Severini, Giovanni Maria and Romano, Federico and Biffi, Stefania} } @article {10474, title = {Cubosomes for in vivo fluorescence lifetime imaging.}, journal = {Nanotechnology}, volume = {28}, year = {2017}, month = {2017 Feb 03}, pages = {055102}, abstract = {

Herein we provided the first proof of principle for in vivo fluorescence optical imaging application using monoolein-based cubosomes in a healthy mouse animal model. This formulation, administered at a non-cytotoxic concentration, was capable of providing both exogenous contrast for NIR fluorescence imaging with very high efficiency and chemospecific information upon lifetime analysis. Time-resolved measurements of fluorescence after the intravenous injection of cubosomes revealed that the dye rapidly accumulated mainly in the liver, while lifetimes profiles obtained in vivo allowed for discriminating between free dye or dye embedded within the cubosome nanostructure after injection.

}, keywords = {Animals, Carbocyanines, Cell Survival, Drug Compounding, Erythrocytes, Female, Fluorescent Dyes, Glycerides, Humans, Injections, Intravenous, Liposomes, Liver, Mice, Mice, Inbred BALB C, Nanoparticles, NIH 3T3 Cells, Optical Imaging, Particle Size, Spectroscopy, Near-Infrared, Time-Lapse Imaging}, issn = {1361-6528}, doi = {10.1088/1361-6528/28/5/055102}, author = {Biffi, Stefania and Andolfi, Laura and Caltagirone, Claudia and Garrovo, Chiara and Falchi, Angela M and Lippolis, Vito and Lorenzon, Andrea and Macor, Paolo and Meli, Valeria and Monduzzi, Maura and Obiols-Rabasa, Marc and Petrizza, Luca and Prodi, Luca and Rosa, Antonella and Schmidt, Judith and Talmon, Yeshayahu and Murgia, Sergio} } @article {10550, title = {Synthesis of Lipophilic Core-Shell FeO@SiO@Au Nanoparticles and Polymeric Entrapment into Nanomicelles: A Novel Nanosystem for in Vivo Active Targeting and Magnetic Resonance-Photoacoustic Dual Imaging.}, journal = {Bioconjug Chem}, volume = {28}, year = {2017}, month = {2017 05 17}, pages = {1382-1390}, abstract = {

In this work, iron/silica/gold core-shell nanoparticles (FeO@SiO@Au NPs) characterized by magnetic and optical properties have been synthesized to obtain a promising theranostic platform. To improve their biocompatibility, the obtained multilayer nanoparticles have been entrapped in polymeric micelles, decorated with folic acid moieties, and tested in vivo for photoacoustic and magnetic resonance imaging detection of ovarian cancer.

}, keywords = {Animals, Cell Proliferation, Female, Ferric Compounds, Folic Acid, Gold, Humans, Image Processing, Computer-Assisted, Magnetic Resonance Imaging, Magnetite Nanoparticles, Mice, Mice, Inbred BALB C, Mice, Nude, Micelles, Multimodal Imaging, Ovarian Neoplasms, Photoacoustic Techniques, Polymers, Silicon Dioxide, Tumor Cells, Cultured, Xenograft Model Antitumor Assays}, issn = {1520-4812}, doi = {10.1021/acs.bioconjchem.7b00076}, author = {Monaco, Ilaria and Arena, Francesca and Biffi, Stefania and Locatelli, Erica and Bortot, Barbara and La Cava, Francesca and Marini, Giada Maria and Severini, Giovanni Maria and Terreno, Enzo and Comes Franchini, Mauro} } @article {8072, title = {The one-step synthesis and surface functionalization of dumbbell-like gold-iron oxide nanoparticles: a chitosan-based nanotheranostic system.}, journal = {Chem Commun (Camb)}, volume = {52}, year = {2016}, month = {2016 Jan 7}, pages = {378-81}, abstract = {

The first one-step synthesis of dumbbell-like gold-iron oxide nanoparticles has been reported here. Surface functionalization with a biocompatible chitosan matrix allowed us to obtain a novel targetable diagnostic and therapeutic tool.

}, issn = {1364-548X}, doi = {10.1039/c5cc08275g}, author = {Kostevsek, Nina and Locatelli, Erica and Garrovo, Chiara and Arena, Francesca and Monaco, Ilaria and Nikolov, Ivaylo Petrov and Sturm, Saso and Zuzek Rozman, Kristina and Lorusso, Vito and Giustetto, Pierangela and Bardini, Paola and Biffi, Stefania and Comes Franchini, Mauro} } @article {7731, title = {Applications of nanoparticles in cancer medicine and beyond: optical and multimodal in vivo imaging, tissue targeting and drug delivery.}, journal = {Expert Opin Drug Deliv}, year = {2015}, month = {2015 Aug 9}, pages = {1-13}, abstract = {

INTRODUCTION: Nanotechnology has opened up the way to the engineering of new organized materials endowed with improved performances. In the past decade, engineered nanoparticles (NPs) have been progressively implemented by exploiting synthetic strategies that yield complex materials capable of performing functions with applications also in medicine. Indeed, in the field of {\textquoteright}nanomedicine{\textquoteright} it has been explored the possibility to design multifunctional nanosystems, characterized by high analytical performances and stability, low toxicity and specificity towards a given cell target. Area covered: In this review article, we summarize the advances in the engineering of NPs for biomedical applications, from optical imaging (OI) to multimodal OI and targeted drug delivery. For this purpose, we will provide some examples of how investigations in nanomedicine can support preclinical and clinical research generating innovative diagnostic and therapeutic strategies in oncology. Expert opinion: The progressive breakthroughs in nanomedicine have supported the development of multifunctional and multimodal NPs. In particular, NPs are significantly impacting the diagnostic and therapeutic strategies since they allow the development of: NP-based OI probes containing more than one modality-specific contrast agent; surface functionalized NPs for specific {\textquoteright}molecular recognition{\textquoteright}. Therefore, the design and characterization of innovative NP-based systems/devices have great applicative potential into the medical field.

}, issn = {1744-7593}, author = {Biffi, Stefania and Voltan, Rebecca and Rampazzo, Enrico and Prodi, Luca and Zauli, Giorgio and Secchiero, Paola} } @article {8055, title = {Functionalized synchrotron in-line phase-contrast computed tomography: a novel approach for simultaneous quantification of structural alterations and localization of barium-labelled alveolar macrophages within mouse lung samples.}, journal = {J Synchrotron Radiat}, volume = {22}, year = {2015}, month = {2015 Jan}, pages = {143-55}, abstract = {

Functionalized computed tomography (CT) in combination with labelled cells is virtually non-existent due to the limited sensitivity of X-ray-absorption-based imaging, but would be highly desirable to realise cell tracking studies in entire organisms. In this study we applied in-line free propagation X-ray phase-contrast CT (XPCT) in an allergic asthma mouse model to assess structural changes as well as the biodistribution of barium-labelled macrophages in lung tissue. Alveolar macrophages that were barium-sulfate-loaded and fluorescent-labelled were instilled intratracheally into asthmatic and control mice. Mice were sacrificed after 24 h, lungs were kept in situ, inflated with air and scanned utilizing XPCT at the SYRMEP beamline (Elettra Synchrotron Light Source, Italy). Single-distance phase retrieval was used to generate data sets with ten times greater contrast-to-noise ratio than absorption-based CT (in our setup), thus allowing to depict and quantify structural hallmarks of asthmatic lungs such as reduced air volume, obstruction of airways and increased soft-tissue content. Furthermore, we found a higher concentration as well as a specific accumulation of the barium-labelled macrophages in asthmatic lung tissue. It is believe that XPCT will be beneficial in preclinical asthma research for both the assessment of therapeutic response as well as the analysis of the role of the recruitment of macrophages to inflammatory sites.

}, keywords = {Algorithms, Allergens, Animals, Asthma, Barium Sulfate, Cell Line, Transformed, Cell Movement, Contrast Media, Disease Models, Animal, Female, Image Processing, Computer-Assisted, Imaging, Three-Dimensional, Lung, Macrophages, Alveolar, Mice, Mice, Inbred BALB C, Microscopy, Fluorescence, Ovalbumin, Synchrotrons, Tomography, X-Ray Computed}, issn = {1600-5775}, doi = {10.1107/S1600577514021730}, author = {Dullin, Christian and dal Monego, Simeone and Larsson, Emanuel and Mohammadi, Sara and Krenkel, Martin and Garrovo, Chiara and Biffi, Stefania and Lorenzon, Andrea and Markus, Andrea and Napp, Joanna and Salditt, Tim and Accardo, Agostino and Alves, Frauke and Tromba, Giuliana} } @article {7725, title = {Targeted tumor imaging of anti-CD20-polymeric nanoparticles developed for the diagnosis of B-cell malignancies.}, journal = {Int J Nanomedicine}, volume = {10}, year = {2015}, month = {2015}, pages = {4099-109}, abstract = {

The expectations of nanoparticle (NP)-based targeted drug delivery systems in cancer, when compared with convectional therapeutic methods, are greater efficacy and reduced drug side effects due to specific cellular-level interactions. However, there are conflicting literature reports on enhanced tumor accumulation of targeted NPs, which is essential for translating their applications as improved drug-delivery systems and contrast agents in cancer imaging. In this study, we characterized biodegradable NPs conjugated with an anti-CD20 antibody for in vivo imaging and drug delivery onto tumor cells. NPs{\textquoteright} binding specificity mediated by anti-CD20 antibody was evaluated on MEC1 cells and chronic lymphocytic leukemia patients{\textquoteright} cells. The whole-body distribution of untargeted NPs and anti-CD20 NPs were compared by time-domain optical imaging in a localized human/mouse model of B-cell malignancy. These studies provided evidence that NPs{\textquoteright} functionalization by an anti-CD20 antibody improves tumor pharmacokinetic profiles in vivo after systemic administration and increases in vivo imaging of tumor mass compared to non-targeted NPs. Together, drug delivery and imaging probe represents a promising theranostics tool for targeting B-cell malignancies.

}, issn = {1178-2013}, doi = {10.2147/IJN.S78995}, author = {Capolla, Sara and Garrovo, Chiara and Zorzet, Sonia and Lorenzon, Andrea and Rampazzo, Enrico and Spretz, Ruben and Pozzato, Gabriele and N{\'u}{\~n}ez, Luis and Tripodo, Claudio and Macor, Paolo and Biffi, Stefania} } @article {1781, title = {In vivo distribution of β2 glycoprotein I under various pathophysiologic conditions.}, journal = {Blood}, volume = {118}, year = {2011}, month = {2011 Oct 13}, pages = {4231-8}, abstract = {

In vitro studies have documented β2 glycoprotein I (β2GPI) binding to endothelial cells (ECs) and trophoblast using antiphospholipid antibodies. The in vivo binding of β2GPI to these cells and the conditions that favor their interaction have not been investigated. We analyzed the in vivo distribution of cyanine 5.5-labeled β2GPI in mice and evaluated the effect of pregnancy and circulating antibodies on its tissue localization. The signal was detected in the liver by whole body scan and ex vivo analysis. The β2GPI failed to bind to the vascular endothelium and reacted only with the ECs of uterine vessels. In pregnant mice the protein was localized on ECs and trophoblast at the embryo implantation sites. Immunized mice showed a similar β2GPI biodistribution to naive mice but the immunized pregnant animals exhibited a significant increase in fetal loss associated with C3 and C9 deposition at the implantation sites. Treatment of mice with LPS after β2GPI-Cy5.5 injection promoted protein localization on gut and brain ECs associated with IgG, C1q, and C9 deposition in immunized mice. These findings indicate that β2GPI binding to EC requires priming with pro-inflammatory factors which is not needed for uterine and placental localization probably dependent on hormonal changes.

}, keywords = {Animals, beta 2-Glycoprotein I, Complement C1q, Complement C3, Complement C9, Endothelial Cells, Endothelium, Vascular, Female, Fetal Death, Humans, Mice, Mice, Inbred BALB C, Pregnancy, Trophoblasts, Uterus}, issn = {1528-0020}, doi = {10.1182/blood-2011-01-333617}, author = {Agostinis, Chiara and Biffi, Stefania and Garrovo, Chiara and Durigutto, Paolo and Lorenzon, Andrea and Bek, Alpan and Bulla, Roberta and Grossi, Claudia and Borghi, Maria O and Meroni, Pierluigi and Tedesco, Francesco} } @article {1722, title = {Quantification of heteroplasmic mitochondrial DNA mutations for DNA samples in the low picogram range by nested real-time ARMS-qPCR.}, journal = {Diagn Mol Pathol}, volume = {20}, year = {2011}, month = {2011 Jun}, pages = {117-22}, abstract = {

In many mitochondrial diseases, different clinical manifestations are related to tissue-specific distribution of mutated mitochondrial DNA (mtDNA). In this study, we describe an assay for the determination of mutated mtDNA copy number in small clinical samples, using standard polymerase chain reaction (PCR) followed by SYBR Green real-time allelic-specific PCR [amplification refractory mutation system-quantitative PCR (ARMS-qPCR)]. To assess the degree of heteroplasmy in a patient harboring 2 cosegregating mtDNA mutations (4415A>G and 9922A>C) starting from picogram amounts of DNA, we first amplified the mutated target sequence by standard PCR, and then analyzed it by real-time ARMS-qPCR. To validate this method, we analyzed by real-time ARMS-qPCR the PCR amplification products derived from different mixtures containing known proportions of mutant and wild-type cloned mtDNA fragments. The correlation coefficient of 0.994 between expected and observed values for the percentage of mutant A4415G confirms that the relative proportion of mutated and wild-type mtDNA was maintained after the first PCR amplification. This method allows the precise quantification of heteroplasmic mutations in DNA samples extracted from hairs, urine, small stomach biopsies, and, more importantly, single-muscle fiber, with a limit of detection close to 0.5\%. This nested real-time ARMS-PCR represents a rapid, efficient, and less expensive method for the detection and quantification of heteroplasmic mutant mtDNA, even in very small clinical samples.

}, keywords = {Child, DNA, Mitochondrial, Humans, Mitochondrial Diseases, Mutation, Polymerase Chain Reaction, Sensitivity and Specificity}, issn = {1533-4066}, doi = {10.1097/PDM.0b013e3181efe2c6}, author = {Biffi, Stefania and Bortot, Barbara and Carrozzi, Marco and Severini, Giovanni Maria} }