Publications by authors named "Orazio Vittorio"

Background: Paediatric sarcomas, including rhabdomyosarcoma, Ewing sarcoma and osteosarcoma, represent a group of malignancies that significantly contribute to cancer-related morbidity and mortality in children and young adults. These cancers share common challenges, including high rates of metastasis, recurrence or treatment resistance, leading to a 5-year survival rate of approximately 20% for patients with advanced disease stages. Despite the critical need, therapeutic advancements have been limited over the past three decades.

View Article and Find Full Text PDF

The MYC proto-oncogene is upregulated in >60% of triple-negative breast cancers (TNBCs), it can directly promote tumor cell proliferation, and its overexpression negatively regulates anti-tumor immune responses. For all these reasons, MYC has long been considered as a compelling therapeutic target. However, pharmacological inhibition of MYC function has proven difficult due to a lack of a drug-binding pocket.

View Article and Find Full Text PDF
Article Synopsis
  • Anti-GD2 antibody therapy offers benefits for neuroblastoma patients, but its effectiveness is limited by the tumor's immunosuppressive environment.
  • Research shows that using copper chelation can enhance this therapy by improving immune responses, specifically by boosting the activity of neutrophils that help fight the tumor.
  • The study suggests repurposing the approved copper chelator Cuprior as a safe and effective method to improve the outcomes of anti-GD2 therapy in neuroblastoma patients.
View Article and Find Full Text PDF

Copper participates in a range of critical functions in the nervous system and human brain. Disturbances in brain copper content is strongly associated with neurological diseases. For example, changes in the level and distribution of copper are reported in neuroblastoma, Alzheimer's disease, and Lewy body disorders, such as Parkinson disease and dementia with Lewy bodies (DLB).

View Article and Find Full Text PDF
Article Synopsis
  • Scientists created a special nanoplatform made of cellulose that helps treat a type of breast cancer called triple negative breast cancer (TNBC).
  • This platform uses sugar to target the cancer cells and deliver tiny particles called gold nanoparticles (AuNPs) right where they are needed.
  • When X-rays are used with this new method, it can improve how well the treatment works, allowing doctors to use less radiation for the same effect.
View Article and Find Full Text PDF

Copper is a vital micronutrient involved in many biological processes and is an essential component of tumour cell growth and migration. Copper influences tumour growth through a process called cuproplasia, defined as abnormal copper-dependent cell-growth and proliferation. Copper-chelation therapy targeting this process has demonstrated efficacy in several clinical trials against cancer.

View Article and Find Full Text PDF

In this study, we developed self-assembling nanoparticles (LCPs) able to trigger the release of Chlorambucil (Chl) and Doxorubicin (DOX) to MDA-MB-231 cells by exploiting the enzyme and redox signals. The DOX loaded LCPs was prepared by the self-assembly of two chondroitin sulphate (CS) derivatives, obtained by the covalent conjugation of Lipoic Acid (LA) and Chlorambucil (Chl) to the CS backbone. After the physic-chemical characterization of the conjugates by FT-IR, H NMR, and determination of the critical aggregation concentration, spherical nanoparticles with mean hydrodynamic diameter of 45 nm (P.

View Article and Find Full Text PDF
Article Synopsis
  • - Recent clinical trials for H3K27-altered diffuse midline gliomas (DMGs) are showing promising results, indicating potential advancements in treatment.
  • - The text identifies three key challenges: improving experimental models to include immune and brain-specific factors, fostering collaboration between researchers, clinicians, and the industry, and optimizing clinical processes like biopsy and drug delivery.
  • - Emphasizes that extensive collaboration is crucial for enhancing our understanding of DMGs, as well as improving diagnostics and therapies for these tumors.
View Article and Find Full Text PDF

The key properties and high versatility of metal nanoparticles have shed new perspectives on cancer therapy, with copper nanoparticles gaining great interest because of the ability to couple the intrinsic properties of metal nanoparticles with the biological activities of copper ions in cancer cells. Copper, indeed, is a cofactor involved in different metabolic pathways of many physiological and pathological processes. Literature data report on the use of copper in preclinical protocols for cancer treatment based on chemo-, photothermal-, or copper chelating-therapies.

View Article and Find Full Text PDF
Article Synopsis
  • Metastatic cancer cells utilize a process called Epithelial-mesenchymal-transition (EMT) to improve their ability to spread and resist treatments, with elevated copper levels contributing to cancer progression.* -
  • Research indicates that using copper chelators, like TEPA, can reduce TGF-β levels and decrease metastasis, particularly in a model of triple-negative breast cancer (TNBC), by disrupting various TGF-β signaling pathways.* -
  • This study posits that copper chelation therapy could serve as a less toxic alternative for targeting TGF-β and inhibiting EMT across multiple cancer types, potentially improving treatment outcomes.*
View Article and Find Full Text PDF

Cystic fibrosis (CF) is caused by a wide spectrum of mutations in the CF transmembrane conductance regulator () gene, with some leading to non-classical clinical presentations. We present an integrated and investigation of an individual with CF carrying the rare Q1291H allele and the common F508del allele. At age 56 years, the participant had obstructive lung disease and bronchiectasis, qualifying for Elexacaftor/Tezacaftor/Ivacaftor (ETI) CFTR modulator treatment due to their F508del allele.

View Article and Find Full Text PDF
Article Synopsis
  • Combined inhibition of oxidative phosphorylation (OXPHOS) and glycolysis can trigger a pathway that causes tumor cell death via PP2A signaling.
  • Using specific inhibitors for mitochondrial complexes I and III, the study reveals that IACS-010759 (a complex I inhibitor) causes the release of CIP2A from PP2A, leading to the breakdown of CIP2A through autophagy.
  • The research identifies that the activation of the PP2A complex with the B56δ subunit is crucial for tumor cell death, while the suppression of cell growth from IACS-010759 treatment does not rely on this specific complex.
View Article and Find Full Text PDF

Background: Molecular profiling of the tumour immune microenvironment (TIME) has enabled the rational choice of immunotherapies in some adult cancers. In contrast, the TIME of paediatric cancers is relatively unexplored. We speculated that a more refined appreciation of the TIME in childhood cancers, rather than a reliance on commonly used biomarkers such as tumour mutation burden (TMB), neoantigen load and PD-L1 expression, is an essential prerequisite for improved immunotherapies in childhood solid cancers.

View Article and Find Full Text PDF

There is a pressing need to develop new antimicrobials to help combat the increase in antibiotic resistance that is occurring worldwide. In the current research, short amphiphilic antibacterial and antibiofilm agents were produced by tuning the hydrophobic and cationic groups of anthranilamide peptidomimetics. The attachment of a lysine cationic group at the tail position increased activity against by >16-fold (from >125 μM to 15.

View Article and Find Full Text PDF

Background: Aggressive primary brain tumors such as glioblastoma are uniquely challenging to treat. The intracranial location poses barriers to therapy, and the potential for severe toxicity. Effective treatments for primary brain tumors are limited, and 5-year survival rates remain poor.

View Article and Find Full Text PDF

Self-assembling nanoparticles (SANPs) based on hyaluronic acid (HA) represent unique tools in cancer therapy because they combine the HA targeting activity towards cancer cells with the advantageous features of the self-assembling nanosystems, i.e., chemical versatility and ease of preparation and scalability.

View Article and Find Full Text PDF

With the aim of preparing hybrid hydrogels suitable for use as patches for the local treatment of squamous cell carcinoma (SCC)-affected areas, curcumin (CUR) was loaded onto graphene oxide (GO) nanosheets, which were then blended into an alginate hydrogel that was crosslinked by means of calcium ions. The homogeneous incorporation of GO within the polymer network, which was confirmed through morphological investigations, improved the stability of the hybrid system compared to blank hydrogels. The weight loss in the 100-170 °C temperature range was reduced from 30% to 20%, and the degradation of alginate chains shifted to higher temperatures.

View Article and Find Full Text PDF

Background: Identification of prognostic biomarkers in cancers is a crucial step to improve overall survival (OS). Although mutations in () is prevalent in astrocytoma, the prognostic effects of mutation are unclear.

Methods: In this retrospective study, we sequenced exons 1 to 10 in a cohort of 102 lower-grade glioma (LGG) subtypes and determined the prognostic effects of mutation in astrocytoma and oligodendroglioma.

View Article and Find Full Text PDF

Functional nanocarriers which are able to simultaneously vectorize drugs to the site of interest and exert their own cytotoxic activity represent a significant breakthrough in the search for effective anticancer strategies with fewer side effects than conventional chemotherapeutics. Here, we propose previously developed, self-assembling dextran-curcumin nanoparticles for the treatment of prostate cancer in combination therapy with Doxorubicin (DOXO). Biological effectiveness was investigated by evaluating the cell viability in either cancer and normal cells, reactive oxygen species (ROS) production, apoptotic effect, interference with the cell cycle, and the ability to inhibit cell migration and reverse the epithelial to mesenchymal transition (EMT).

View Article and Find Full Text PDF

Copper is an essential transition metal frequently increased in cancer known to strongly influence essential cellular processes. Targeted therapy protocols utilizing both novel and repurposed drug agents initially demonstrate strong efficacy, before failing in advanced cancers as drug resistance develops and relapse occurs. Overcoming this limitation involves the development of strategies and protocols aimed at a wider targeting of the underlying molecular changes.

View Article and Find Full Text PDF

Diffuse intrinsic pontine glioma (DIPG) is an aggressive and incurable childhood brain tumor for which new treatments are needed. CBL0137 is an anti-cancer compound developed from quinacrine that targets facilitates chromatin transcription (FACT), a chromatin remodeling complex involved in transcription, replication, and DNA repair. We show that CBL0137 displays profound cytotoxic activity against a panel of patient-derived DIPG cultures by restoring tumor suppressor TP53 and Rb activity.

View Article and Find Full Text PDF

Diffuse Intrinsic Pontine Gliomas (DIPGs) are highly aggressive paediatric brain tumours. Currently, irradiation is the only standard treatment, but is palliative in nature and most patients die within 12 months of diagnosis. Novel therapeutic approaches are urgently needed for the treatment of this devastating disease.

View Article and Find Full Text PDF

In this work, we combined electrically-conductive graphene oxide and a sodium alginate-caffeic acid conjugate, acting as a functional element, in an acrylate hydrogel network to obtain multifunctional materials designed to perform multiple tasks in biomedical research. The hybrid material was found to be well tolerated by human fibroblast lung cells (MRC-5) (viability higher than 94%) and able to modify its swelling properties upon application of an external electric field. Release experiments performed using lysozyme as the model drug, showed a pH and electro-responsive behavior, with higher release amounts and rated in physiological vs.

View Article and Find Full Text PDF
Article Synopsis
  • - Targeted drug delivery systems are essential for improving drug accumulation in the brain, especially due to the challenges posed by the blood-brain barrier that limits drug effectiveness.
  • - Natural polysaccharides are gaining attention as materials for these systems due to their biocompatibility and ability to be modified for specific needs, allowing for a variety of specialized drug carriers.
  • - The review highlights advancements in targeted carriers using natural polysaccharides, discussing various targeting strategies and their effectiveness in enhancing drug delivery across the blood-brain barrier for different brain diseases.
View Article and Find Full Text PDF

Therapeutic checkpoint antibodies blocking programmed death receptor 1/programmed death ligand 1 (PD-L1) signaling have radically improved clinical outcomes in cancer. However, the regulation of PD-L1 expression on tumor cells is still poorly understood. Here we show that intratumoral copper levels influence PD-L1 expression in cancer cells.

View Article and Find Full Text PDF