OpenNano最新文献

Nucleic acid nanotechnology presents an exciting approach for manufacturing tailored nanoscale biomaterials with precise structures, spatial precision, and exceptional biocompatibility. These nucleic acid-based nanomaterials, here referred as nano-carriers can have versatile applications in bio-imaging, diagnostics, and therapy. In this review, we have surveyed the progress made in the field of multifunctional nucleic acid nano-carriers, particularly in the context of delivering antisense and RNA interference (RNAi) therapeutics. RNAi technology has emerged as a potent modality for conducting functional genomic analyses and holds potential as an effective approach for crafting targeted gene-silencing treatments for viral infections, cancer, and other diseases in the future. Our focus is on exploring RNAi as a therapeutic avenue, taking into account challenges such as the expense of RNAi triggers, delivering RNAi efficiently to the target site, and addressing off-target and nontarget effects, while also recognizing promising opportunities within the field of biomedical research.

Magnetic Resonance Imaging (MRI) is a widely established method for monitoring and diagnosing neurological diseases, including multiple sclerosis (MS). MS is a disease that continuously progresses and in due course involves the progressive atrophy of neural structures (such as brain gray and white matter) leading to debilitation. Clearly, the earlier that MS can be detected, the better the chances of eventual treatment to slow down disease progression. While conventional MRI volumetry, as a non-invasive imaging technique that measures the exact volume of different brain structures, has improved the diagnosis of brain atrophy, problems still exist. This review introduces and summarizes the seminal role that nanotechnology (in terms of novel materials for improved MS diagnosis and treatment) and artificial intelligence (in terms of enhancing images via computer algorithms and novel contrast agents) are playing in improving volumetric MRI. In doing so, this one-of-a-kind review manuscript establishes how nanotechnology and artificial intelligence is improving, and will continue to improve, volumetric MRI diagnosis and treatment of MS.

Monolaurin was utilized to formulate temperature-driven phase inversion nanoemulsions containing lesser galangal essential oil, fixed oil, and Cremophor RH40, with aim for eradicating enveloped viruses. Results showed that the droplet size of the nanoemulsion depended on lesser galangal essential oil–fixed oil ratio, monolaurin concentration, and oil concentration. Nanoemulsions prepared from lesser galangal essential oil–perilla oil (60:40) exhibited approximately 50-nm nanosized droplets and high entrapment efficiency (98.68 % ± 2.45 %). After storage at 25 °C for 1 year, droplet size did not vary significantly from the initial size, and monolaurin content was >95 %, indicating good physical and chemical stability. The monolaurin was located at the oil–water interface as indicated by a two-dimensional nuclear Overhauser effect nuclear magnetic resonance spectroscope and computer simulation. The 0.2% w/v monolaurin nanoemulsion inhibited SARS-CoV-2 and influenza A (H1N1) viruses with efficacy more than 3 log reduction (99.90 %) and low cytotoxicity. Hence, the monolaurin nanoemulsion can successfully eradicate enveloped viruses, especially SARS-CoV-2 and influenza A (H1N1).

This work contains the development of QCT-loaded TPGS-coated SLNs by QbD to enhance neuroinflammation potential. Developed SLNs were in the nanometer range (263±3.62 nm) with desired parameters i.e., PDI (0.244±0.003), zeta potential (28.2 ± 0.74 mV), and%EE (74.3 ± 2.45 %) respectively. The release study showed sustained drug release of the developed formulation T-QCT-SLN (83.2 % release in 48 h). The study found QCT can reduce oxidative stress and neuroinflammation in adult zebrafish. Results showed reduced disruption in neuronal cells, decreased TNF-α and IL-1β levels, and reduced LPO, nitrite, and AChEs levels while increasing GSH levels, indicating its potential for treating oxidative stress and neuroinflammation. It can be concluded that QCT-loaded TPGS-coated SLN effectively prevents oxidative damage and neuroinflammation in adult zebrafish exposed to LPS compared to the QCT alone. The suggested work will be a focal paradigm for neuroinflammatory drug delivery.

Since the bioavailability of calcium from foods and supplements is low, its encapsulation in niosomes is proposed as a potential solution to this issue. This study aimed to compare the physiochemical properties and release profiles of niosomes with calcium chloride and calcium lactate produced by injection and sonication methods. The size distribution (200–300 nm), encapsulation efficiency (20–40 %), stability, release profile, cytotoxicity, and calcium bioavailability of the niosomes were characterized. The production method, rather than the calcium salt used, impacted the properties of the niosomes. Calcium release under gastrointestinal conditions was dependent on both the calcium source and the production method, which was characterized by a Peppas-Sahlin release model. Calcium niosomes were not cytotoxic to intestinal cells. All the calcium niosomes showed high bioavailability in cells (5–20 % greater than the control) but lower bioavailability than the non-encapsulated calcium salts (80–110 % above control) due to their high solubility. Nevertheless, the use of niosomes might be a promising approach for improving calcium bioavailability.

The green fabrication of photocatalyst is an interesting research topic owing to the beneficials of non-toxicity, simplicity, and environmentally friendly. In this research, we report the biosynthesis of ZnO by a hydrothermal/solvothermal method with addition of leaf extract (using either water or ethanol as a solvent) of Senna siamea.. The prepared ZnO was used for removal of tetracycline (TC) antibiotic and reactive red 141 (RR141) azo dye. The complete degradation of the pollutant was achieved under both UV light (120 min) and sunlight (40 min). The ZnO-SV400, solvothermally grown using ethanol extract and then calcined at 400 °C, showed promising photoactivity assigning to the increment of the photogenerated charge carrier separation capacity and high crystallinity of the sample after thermal treatment. The degradation reaction follows nicely with the first-order reaction with a rate constant of 0.081 min⁻¹. The result shows that hydroxyl radicals are the key spices involved in the detoxification of the contaminants. The recycling ability of about five cycles was reported. The structural stability was also confirmed. The strategy presented here demonstrates that the green synthesis with addition of plant extracts is the main parameter governing the fabrication of sunlight-active ZnO photocatalyst for detoxification of the toxic contaminants including organic dyes and antibiotics in wastewater.

In this work, the Zn based MOFs were synthesized from cyanoguanidine and zinc acetate source precursors via two hydrothermal methods and high energy ball milling technique and also the free salt and bimetallic samples have been synthesized. Then, the fabricated Zn-MOFs were heat for calcination at 550 °C for 110 min. The synthesized nanostructures were examined by XRD, SEM and FTIR analysis to gain insight about structure, morphology and functional groups properties. The results confirm that it is possible to prepare Zn MOFs using high energy ball milling methods. Besides, the fabricated MOF and complex structures can be converted to porous zinc oxide (ZnO) by a simple thermal annealing in air. Then, the line broadening of ZnO from mechanochemical and hydrothermal methods was showed due to the small crystallite size and lattice strain. The broadening was studied by the Scherrer formula and Williamson Hall (UDM, USDM, UDEDM) and Size-strain plot techniques. In addition, undesirable phases may affect the synthesized part during thermal cycles. We demonstrate the potential of using high-energy X-ray diffraction for detailed analysis of minority phases in ZnO-derived components.

To know when a nanoparticle (NP) is toxic and when a NP is medicinal, we need to elucidate the various biochemical interactions exerted by NPs within the body. Clearance is an important pharmacological parameter and property. Once in the body, renal clearance modulates the biological response to NPs and modulate (toxic) stress. Here, we reviewed mechanisms of interaction between NPs and kidney. NPs interact differently with mesangial and endothelial cells, podocytes and macrophages; these cell types work together to maintain homeostasis. Clearance requires NPs to be filtered and (then) ‘scavenged’ by e.g., kidney macrophages. We identified several markers of overall biophysical stress. For example, NPs can mimic transport agents, viruses or systems used by the body to combat them, like vesicles. Thus, NPs interfere with e.g., endocytic and actin-angiotensin systems and osmotic pressure that they regulate. In cases of too much stress, NPs can aggravate disease; in case ‘adequate’ stress is lacking, NPs can act medicinal. In this short review, we also describe kinetics for clearance by kidney and present formulae for NP clearance with a basis in bio-physics. Glomerular filtration rates (GFR) measure energy expenditure and metabolic rate. NPs of differing size may differ in renal scavenging and filtration capacity. NPs affect the GFR in a size and dose-dependent manner. Therefore, modeling clearance and accumulation of NPs by/in kidney ought to be flexible to biological response and in situ NP-induced changes in biophysiological properties.

On a global scale, lung cancer remains a common malignancy and is largest cause of many deaths related to cancer. Despite the significant advancements in lung cancer diagnostic and therapeutic approaches, many individuals exhibit resistant responses to proven therapies. This focuses on the critical need for novel therapeutic methods to be developed and innovated. Recently, nanotechnology has gained a lot of importance for treating malignancy as it helps improve drug delivery, specificity, reduced dose, and efficient elimination. Lipid nanoparticles (LNPs) are nanocarriers with low particle size, which can be modified for specific delivery. The current review focuses on the significance and application of lipid-based theranostic nanoparticles for cancer therapy, components, method of preparation and factors affecting lipid nanoparticle preparation, along with the clinical trials and patents of LNPs. Therapeutic applications in lung cancer therapy include Chemotherapy, photodynamic therapy, immunotherapy, gene therapy, photothermal therapy, and sonodynamic therapy. Diagnostic applications like SPECT, CT, MRI, PET, Optical fluorescence imaging and NIR. As LNPs are being used more frequently in lung cancer therapy, the ongoing research helps in offering solutions to overcome the issues by conventional treatments. Due to their adaptability to customized medical procedures and the use of numerous components, they hold the potential for treating lung cancer. In conclusion, LNPs offer a viable strategy for treating lung cancer by boosting bioavailability, promoting medication delivery, and removing obstacles. For individualised medicine, they can encapsulate a range of therapeutic, such as immunomodulatory medicines, siRNA, and chemotherapeutic medications. Additional study and clinical validation are required to address scalability, long-term safety, and optimised manufacturing techniques for effective application in lung cancer therapy.

Growing interest has been seen in non-pathogenic, safe, and effective gene therapy delivery systems. There are many nucleic acid therapies that have been studied to alter the expression of DNA or RNA, such as mRNA, siRNA, antisense DNA, and microRNA (miRNA), of which siRNA has been shown to be useful in blocking specific genes. The development of an efficient nucleic acid delivery method is crucial for molecular diagnostic and therapeutic systems. Mesoporous silica nanoparticles (MSNs) with high porosity, good textural qualities, and biocompatibility have been studied for use in drug delivery systems. They are being utilized more and more in combination therapy, gene silencing, and other biological applications, especially in cancer nanomedicine. MSNs offer efficient drug loading and controlled release, and additions can change their characteristics. They are widely employed in target medication delivery, biosensing, cellular uptake, and diagnostics in the biomedical field. Additionally, they have been connected to theranostic drugs for cancer treatment. This review highlights the current state of knowledge of MSNs and their specialized applications as theranostic agents for cancer management.