Publications by authors named "Esposito Emanuela"

Spectrochemical analysis of trace elements in complex matrices is crucial across various fields of science, industry, and technology. However, this analysis is often hindered by background interference and the challenge of detecting ultralow analyte concentrations. Surface Enhanced Infrared Absorption (SEIRA) spectroscopy is emerging as a viable technique to address these challenges as it can successfully reveal soluble and unmodified analytes in a label-free manner through their interactions with a bioreceptor following site-specific labeling with small infrared-active probes.

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Peptide-based self-assembled nanosystems show great promise as non-viral gene and siRNA delivery vectors. In the current study, we designed and functionalized nanofibers for the delivery of siRNA, targeting and silencing EGFR gene overexpressed in triple-negative breast cancer. The nanofiber-mediated siRNA delivery was characterized in terms of zeta potential, morphology, and structural stability by circular dichroism spectroscopy.

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One of the most used chemotherapy agents in clinical practice is 5-Fluorouracil (5-FU), a fluorinated pyrimidine in the category of antimetabolite agents. 5-FU is used to treat a variety of cancers, including colon, breast, pancreatic, and stomach cancers, and its efficacy lies in its direct impact on the patient's DNA and RNA. Specifically, its mechanism blocks the enzymes thymidylate synthetase and uracil phosphatase, inhibiting the synthesis of uracil, which cannot be incorporated into nuclear and cytoplasmic RNA.

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In oncology, casein kinase 2 (CK2), a serine/threonine kinase, has a dual action, regulating cellular processes and acting as an oncogenic promoter. : This study examined the effect of CX-4945, a selective CK2 inhibitor, in a human U-87 glioblastoma (GBM) cell line, treated with CX-4945 (5, 10, and 15 μM) for 24 h. Similarly, the hCMEC/D3 cell line was used to mimic the blood-brain barrier (BBB), examining the ability of CX-4945 to restore BBB homeostasis, after stimulation with lipopolysaccharide (LPS) and then treated with CX-4945 (5, 10, and 15 μM).

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Mutations in the leucine-rich repeat kinase 2 (LRRK2) gene are common genetic causes of Parkinson's disease (PD). Studies demonstrated that variants in LRRK2 genetically link intestinal disorders to PD. We aimed to evaluate whether the selective inhibitor of LRRK2, PF-06447475 (PF-475), attenuates the PD induced by 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP) in central nervous system (CNS) and in the gastrointestinal system.

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Spinal cord injury (SCI) leads to severe and lasting impairments in motor and sensory functions. The intense inflammatory response following SCI is a significant challenge, and autophagy has emerged as a key factor in the recovery process. The C-C chemokine receptor type 1 (CCR1), a G-protein coupled receptor, plays a crucial role in managing the chemokine response under stress.

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Neuronal Ceroid Lipofuscinosis type 2 is a rare pathology affecting mainly the central nervous system (CNS) and retina, and is caused by variants in the gene encoding the lysosomal enzyme tripeptidyl peptidase 1. Therapy with enzyme replacement through the brain infusion of the orphan drug cerliponase alfa, a recombinant human tripeptidyl peptidase 1 enzyme replacement therapy delivered via intracerebroventricular infusion, has been approved for Neuronal Ceroid Lipofuscinosis type 2 disease. The safety profile of cerliponase alfa has been established based on pre-authorization studies; currently, no post-marketing investigation has been performed to confirm it.

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Article Synopsis
  • Filamin A (FLNA) is found at lower levels in adrenocortical carcinomas (ACC) compared to adenomas (ACA), and its presence is linked to less aggressive tumor behavior due to its role in regulating IGF1R signaling.
  • The study investigated the expression of Wee1 kinase in ACC and how it is influenced by FLNA, revealing increased Wee1 and decreased FLNA proteins in ACC, along with insights into the effects of the Wee1 inhibitor AZD1775.
  • Findings indicate that FLNA promotes the degradation of Wee1, and that low FLNA levels in ACC lead to heightened Wee1, suggesting that targeting Wee1 with inhibitors could be a promising treatment strategy for FLNA-deficient
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Article Synopsis
  • * Genetic mutations in the LRRK2 gene are significant as they increase LRRK2 activity, disrupting neuronal autophagy and contributing to neurotoxicity and neuron death.
  • * The review explores how the upregulation of casein kinase (CK) affects the AMPK pathway and contributes to disease processes in NDDs by impacting proteins associated with diseases like PD, HD, and AD, highlighting the role of kinases in their development.
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Thiophene-based nanoparticles (TNPs) are promising therapeutic and imaging agents. Here, using an innovative phage-templated synthesis, a strategy able to bypass the current limitations of TNPs in nanomedicine applications is proposed. The phage capsid is decorated with oligothiophene derivatives, transforming the virus in a 1D-thiophene nanoparticle (1D-TNP).

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Article Synopsis
  • * Benzyl isothiocyanate (BITC), a natural compound, has shown potential anticancer effects in ATC, influencing crucial cellular processes.
  • * The study suggests that BITC may slow ATC progression by interacting with autophagy, reducing epithelial-mesenchymal transition (EMT), and lowering inflammation, indicating it warrants further research for new treatment approaches.
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Pseudoangiomatous stromal hyperplasia (PASH) is a benign mesenchymal proliferative lesion of the breast. In 2005, only 109 cases have been reported since its initial description in 1986 by Vuitch et al. when it presented in one patient as a palpable breast mass.

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  • GERD is a common stomach problem that affects many people and causes changes in the esophagus due to inflammation.
  • Researchers studied a substance called bombesin to see if it could help reduce inflammation and stomach pain in mice with GERD.
  • The results showed that bombesin helped lower pain and improve stomach conditions, suggesting it could be a good treatment option for people with GERD.
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Although the risk of fluoropyrimidine toxicity may be decreased by identifying poor metabolizers with a preemptive dihydropyrimidine dehydrogenase () test, following international standards, many patients with wild-type (WT) genotypes for classic variations may still exhibit adverse drug reactions (ADRs). Therefore, the safety of fluoropyrimidine therapy could be improved by identifying new polymorphisms associated with ADRs. This study was carried out to assess whether testing for the underestimated c.

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Neurodegenerative diseases such as Alzheimer's are very common today. Idebenone (IDE) is a potent antioxidant with good potential for restoring cerebral efficiency in cases of these and other medical conditions, but a serious drawback for the clinical use of IDE in neurological disorders lies in its scarce water solubility, which greatly inhibits its bioavailability. In this work, we prepared the inclusion complex of IDE with randomly methylated β-cyclodextrin (RAMEB), resulting in improved water solubility of the included drug; then its in vitro biological activity and ex vivo permeability was evalutated.

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Oral squamous cell carcinoma (OSCC) is one of the most common human malignancies worldwide. The molecular mechanisms of OSCC pathogenesis are still unknown; however, in recent years, several reports have focused on the role of enhancer of zeste homolog 2 (EZH2) in OSCC. Therefore, in this study we aimed to investigate the effects of GSK343, a selective EZH2 inhibitor, and its impact on the signaling pathways in OSCC, using an in vitro and in vivo orthotopic model.

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Article Synopsis
  • * In both in vitro and in vivo studies, Trox treatment decreased the viability and migratory ability of ATC cells by altering the expression of apoptotic factors and activating oxidative stress mediators.
  • * Trox also impacted key inflammatory pathways, specifically by modulating NF-κB markers, and in vivo results showcased its effectiveness in reducing harmful morphological changes and mast cell accumulation in ATC models, suggesting it could be a valuable therapeutic approach.
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The term "inflammatory bowel disease" (IBD) describes a class of relapse-remitting conditions that affect the gastrointestinal (GI) tract. Among these, Crohn's disease (CD) and ulcerative colitis (UC) are two of the most globally prevalent and debilitating conditions. Several articles have brought attention to the significant role that inflammation and oxidative stress cooperatively play in the development of IBD, offering a different viewpoint both on its etiopathogenesis and on strategies for the effective treatment of these conditions.

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Ferritins are natural proteins which spontaneously self-assemble forming hollow nanocages physiologically deputed to iron storage and homeostasis. Thanks to their high stability and easy production in vitro, ferritins represent an intriguing system for nanobiotechnology. Here we investigated the mechanism of disassembly and reassembly of a human recombinant ferritin constituted by the heavy chain (hHFt) exploiting a new procedure which involves the use of minimal amounts of sodium dodecyl sulfate (SDS) and assessed its effectiveness in comparison with two commonly used protocols based on pH shift at highly acidic and alkaline values.

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In this work, we describe the development of targeted polymeric nanoparticles loaded with lenvatinib for the treatment of hepatocellular carcinoma (HCC). A synthetic brush copolymer (PHEA-g-BIB-pButMA-g-PEG-biotin) was synthesized from α-poly(N-2-hydroxyethyl)-D,L-aspartamide (PHEA) by a three-step reaction involving atom transfer radical polymerisation (ATRP) to graft hydrophobic polybutylmethacrylate pendant groups and further conjugation with biotinylated polyethylene glycol via carbonate ester. Subsequently, lenvatinib-loaded nanoparticles were obtained and characterized demonstrating colloidal size, negative zeta potential, biotin exposure on the surface and the ability to release lenvatinib in a sustained manner.

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Recent studies have demonstrated dysregulation of the autophagy pathway in patients with Parkinson's disease (PD) and in animal models of PD, highlighting its emerging role in disease. In particular, several studies indicate that autophagy, which is an essential degradative process for the damaged protein homeostasis and the management of cell balance, can manifest significant variations according to gender. While some evidence suggests increased autophagic activation in men with PD, women may have distinct regulatory patterns.

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