@article {10527, title = {Association between thyroid hormones and TRAIL.}, journal = {Clin Biochem}, volume = {50}, year = {2017}, month = {2017 Nov}, pages = {972-976}, abstract = {

INTRODUCTION: Recent studies suggest that a circulating protein called TRAIL (TNF-related apoptosis-inducing ligand) might have a role in the regulation of body weight and metabolism. Interestingly, thyroid hormones seem to increase TRAIL tissue expression. This study aimed at evaluating whether overt thyroid disorders affected circulating TRAIL levels.

METHODS: TRAIL circulating levels were measured in euthyroid, hyperthyroid, and hypothyroid patients before and after thyroid function normalization. Univariate and multivariate analyses were performed to evaluate the correlation between thyroid hormones and TRAIL. Then, the stimulatory effect of both triiodothyronine (T3) and thyroxine (T4) on TRAIL was evaluated in vitro on peripheral blood mononuclear cells.

RESULTS: Circulating levels of TRAIL significantly increased in hyperthyroid and decreased in hypothyroid patients as compared to controls. Once thyroid function was restored, TRAIL levels normalized. There was an independent association between TRAIL and both fT3 and fT4. Consistent with these findings, T3 and T4 stimulated TRAIL release in vitro.

CONCLUSION: Here we show that thyroid hormones are associated with TRAIL expression in vivo and stimulate TRAIL expression in vitro. Given the overlap between the metabolic effects of thyroid hormones and TRAIL, this work sheds light on the possibility that TRAIL might be one of the molecules mediating thyroid hormones peripheral effects.

}, keywords = {Aged, Female, Gene Expression Regulation, Humans, Hyperthyroidism, Hypothyroidism, Leukocytes, Mononuclear, Male, Middle Aged, Thyroxine, TNF-Related Apoptosis-Inducing Ligand, Triiodothyronine}, issn = {1873-2933}, doi = {10.1016/j.clinbiochem.2017.05.011}, author = {Bernardi, Stella and Bossi, Fleur and Toffoli, Barbara and Giudici, Fabiola and Bramante, Alessandra and Furlanis, Giulia and Stenner, Elisabetta and Secchiero, Paola and Zauli, Giorgio and Carretta, Renzo and Fabris, Bruno} } @article {7729, title = {The anti-leukemic activity of sodium dichloroacetate in p53mutated/null cells is mediated by a p53-independent ILF3/p21 pathway.}, journal = {Oncotarget}, volume = {6}, year = {2015}, month = {2015 Feb 10}, pages = {2385-96}, abstract = {

B-chronic lymphocytic leukemia (B-CLL) patients harboring p53 mutations are invariably refractory to therapies based on purine analogues and have limited treatment options and poor survival. Having recently demonstrated that the mitochondria-targeting small molecule sodium dichloroacetate (DCA) exhibits anti-leukemic activity in p53wild-type B-CLL cells, the aim of this study was to evaluate the effect of DCA in p53mutated B-CLL cells and in p53mutated/null leukemic cell lines. DCA exhibited comparable cytotoxicity in p53wild-type and p53mutated B-CLL patient cell cultures, as well as in p53mutated B leukemic cell lines (MAVER, MEC-1, MEC-2). At the molecular level, DCA promoted the transcriptional induction of p21 in all leukemic cell types investigated, including p53null HL-60. By using a proteomic approach, we demonstrated that DCA up-regulated the ILF3 transcription factor, which is a known regulator of p21 expression. The role of the ILF3/p21 axis in mediating the DCA anti-leukemic activity was underscored by knocking-down experiments. Indeed, transfection with ILF3 and p21 siRNAs significantly decreased both the DCA-induced p21 expression and the DCA-mediated cytotoxicity. Taken together, our results emphasize that DCA is a small molecule that merits further evaluation as a therapeutic agent also for p53mutated leukemic cells, by acting through the induction of a p53-independent pathway.

}, issn = {1949-2553}, doi = {10.18632/oncotarget.2960}, author = {Agnoletto, Chiara and Brunelli, Laura and Melloni, Elisabetta and Pastorelli, Roberta and Casciano, Fabio and Rimondi, Erika and Rigolin, Gian Matteo and Cuneo, Antonio and Secchiero, Paola and Zauli, Giorgio} } @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 {3580, title = {Association of serum tumor necrosis factor-related apoptosis inducing ligand with body fat distribution as assessed by dual X-rays absorptiometry.}, journal = {Mediators Inflamm}, volume = {2014}, year = {2014}, month = {2014}, pages = {306848}, abstract = {

A low chronic inflammation mediated by cytokine release is considered a major pathogenic mechanism accounting for the higher risk of cardiovascular disease in the overweight/obese population. In this context, although the existence of a possible interaction between soluble tumor necrosis factor- (TNF-) related apoptosis inducing ligand (TRAIL) and quantity and localization, of adiposity in the body has been hypothesized, no studies have yet investigated this link by radiologic techniques able to assess directly fat mass (FM) in different body regions. To address this issue, we assessed body fat distribution by dual X-rays absorptiometry (DXA) in a sample of 103 women and investigated the possible association between the derived adiposity measures and serum TRAIL concentration. The level of TRAIL showed a positive and independent correlation with arms FM (P < 0.05), trunk FM (P < 0.001) and trunk FM\% (P < 0.05), total FM and total FM\% (P < 0.001 for both), and an inverse association with legs FM\% (P < 0.05). Only trunk FM retained a significant correlation (P < 0.05) with TRAIL after adjusting for all the other indices of regional adiposity. In conclusion, from our study it emerged a significant and independent association of serum TRAIL levels with overall, and, mainly, central adiposity. Further studies are needed to longitudinally investigate the cause-effect relationship between change in body fat distribution and TRAIL.

}, keywords = {Absorptiometry, Photon, Adipose Tissue, Adiposity, Adult, Anthropometry, Female, Gene Expression Regulation, Humans, Inflammation, Linear Models, Menopause, Middle Aged, Overweight, TNF-Related Apoptosis-Inducing Ligand}, issn = {1466-1861}, doi = {10.1155/2014/306848}, author = {Cervellati, Carlo and Secchiero, Paola and Bonaccorsi, Gloria and Celeghini, Claudio and Zauli, Giorgio} } @article {1769, title = {Activation of the p53 pathway induces α-smooth muscle actin expression in both myeloid leukemic cells and normal macrophages.}, journal = {J Cell Physiol}, volume = {227}, year = {2012}, month = {2012 May}, pages = {1829-37}, abstract = {

A range of cell types of mesenchymal origin express α-smooth muscle actin (α-SMA), a protein that plays a key role in controlling cell motility and differentiation along the fibrocyte and myofibroblast lineages. Although α-SMA is often expressed in stromal cells associated to a variety of cancers including hematological malignancies, up to now the role of anti-cancer drugs on α-SMA has not been deeply investigated. In this study, we demonstrated that Nutlin-3, the small molecule inhibitor of the MDM2/p53 interactions, significantly up-regulated the mRNA and protein levels of α-SMA in normal macrophages as well as in p53(wild-type) but not in p53(mutated/null) myeloid leukemic cells. The p53-dependence of α-SMA up-regulation induced by Nutlin-3 was demonstrated in experiments performed with siRNA for p53. Of note, Nutlin-3 mediated up-regulation of α-SMA in OCI leukemic cells was accompanied by cell adhesion to plastic substrate and by reduced cell migratory response in transwell assays. Notably, the role of α-SMA induction in the modulation of myeloid cell migration was clearly documented in α-SMA gene knockdown experiments. In addition, Nutlin-3 significantly up-regulated α-SMA expression in primary endothelial cells, but not in fibroblasts and mesenchymal stem cells (MSC). Conversely, transforming growth factor-β1 up-regulated α-SMA in fibroblasts and MSC, but not in macrophages and endothelial cells. Taken together, these data indicate that Nutlin-3 is a potent inducer of α-SMA in both normal and leukemic myeloid cells as well as in endothelial cells.

}, keywords = {Actins, Cell Movement, Cells, Cultured, Endothelial Cells, Fibroblasts, Humans, Imidazoles, Leukemia, Myeloid, Macrophages, Mesenchymal Stromal Cells, Piperazines, Proto-Oncogene Proteins c-mdm2, RNA, Small Interfering, Signal Transduction, Transforming Growth Factor beta1, Tumor Suppressor Protein p53}, issn = {1097-4652}, doi = {10.1002/jcp.22910}, author = {Secchiero, Paola and Rimondi, Erika and di Iasio, Maria Grazia and Voltan, Rebecca and Gonelli, Arianna and Zauli, Giorgio} } @article {1625, title = {Anti-leukemic activity of dasatinib in both p53(wild-type) and p53(mutated) B malignant cells.}, journal = {Invest New Drugs}, volume = {30}, year = {2012}, month = {2012 Feb}, pages = {417-22}, abstract = {

The multi-kinase inhibitor dasatinib induced a variable but significant decrease of viability in both p53(wild-type) (EHEB, JVM-2, JVM-3) and p53(mutated) (MEC-1, MEC-2, BJAB) prolymphocytic B leukemic cells, due to a combination of cell cycle block in G1 and apoptosis. Antibody phospho-kinase array analysis revealed that dasatinib inhibited the phosphorylation of various kinases, including ERK1/2 and p38/MAPK as well as of STAT3 transcription factors, in both p53(wild-type) and p53(mutated) cells. Therefore, dasatinib might offer a novel therapeutic strategy not only for p53(wild-type), but also for p53(mutated) B malignancies that have the worst prognosis and urgently need innovative therapeutic approaches.

}, keywords = {Antineoplastic Agents, Apoptosis, B-Lymphocytes, Cell Line, Tumor, Cell Survival, G1 Phase Cell Cycle Checkpoints, Granulocyte Precursor Cells, Humans, Leukemia, Prolymphocytic, B-Cell, Mitogen-Activated Protein Kinase 1, Mitogen-Activated Protein Kinase 3, Mutation, p38 Mitogen-Activated Protein Kinases, Phosphorylation, Protein Kinase Inhibitors, Pyrimidines, STAT3 Transcription Factor, Thiazoles, Time Factors, Tumor Suppressor Protein p53}, issn = {1573-0646}, doi = {10.1007/s10637-010-9564-6}, author = {Bosco, Raffaella and Rabusin, Marco and Voltan, Rebecca and Celeghini, Claudio and Corallini, Federica and Capitani, Silvano and Secchiero, Paola} } @article {1612, title = {Association of tumor necrosis factor-related apoptosis-inducing ligand with total and cardiovascular mortality in older adults.}, journal = {Atherosclerosis}, volume = {215}, year = {2011}, month = {2011 Apr}, pages = {452-8}, abstract = {

OBJECTIVE: Tumor necrosis factor-related apoptosis-inducing ligand (TRAIL) exhibits biological activity on vascular cells in vitro. Rapid variation of circulating TRAIL levels occurs during acute coronary ischemia, suggesting that biological pathways involving TRAIL may be activated during ischemic heart disease. However, whether differential levels of soluble TRAIL in normal individuals are associated with adverse health outcomes has not been investigated. We tested the hypothesis that TRAIL levels predict mortality in a population based sample of community dwelling men and women.

METHODS: Plasma TRAIL level was measured by ELISA at baseline in 1282 adults (mean age 68 years) enrolled in the InCHIANTI study. Vital status was ascertained over the six-year follow-up.

RESULTS: In multivariable Cox regression analysis adjusted for potential confounders including prevalent cardiovascular diseases (CVD), ankle-brachial index, electrocardiogram abnormalities, and inflammatory markers, baseline TRAIL levels were inversely related to all-cause mortality (p=0.008). In stratified analyses, the prognostic effect of TRAIL level was strong and highly significant in participants with prevalent CVD (N=321), (lowest versus highest quartile: HR 3.1; 95\% CI 1.5-6.5) while it was negligible in those free of CVD (p value for the interaction term between CVD status and TRAIL levels=0.038). Similar findings were obtained when CVD mortality was considered as the outcome of interest.

CONCLUSIONS: In older patients with CVD, low levels of TRAIL were associated with increased risk of death over a period of 6 years. Lower concentration of circulating TRAIL may be related to the clinical evolution of older adults with CVD.

}, keywords = {Adult, Aged, Ankle Brachial Index, Cardiovascular Diseases, Female, Follow-Up Studies, Humans, Italy, Male, Middle Aged, TNF-Related Apoptosis-Inducing Ligand}, issn = {1879-1484}, doi = {10.1016/j.atherosclerosis.2010.11.004}, author = {Volpato, Stefano and Ferrucci, Luigi and Secchiero, Paola and Corallini, Federica and Zuliani, Giovanni and Fellin, Renato and Guralnik, Jack M and Bandinelli, Stefania and Zauli, Giorgio} }