Publications by authors named "Pranjyan Dash"

Nano-sized high-entropy materials (HEMs) recently received more attention to researchers due to their superior electrochemical catalytic properties. HEMs comprise at least five elements with or without metals and are synthesized through solid-state reactions and solution-mediated techniques. The presence of many elements in these HEMs result in a high mixing entropy and facilitates the formation of stable solid solutions in fundamental crystal structures.

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Background: Phototherapy based on photocatalytic semiconductor nanomaterials has received considerable attention for the cancer treatment. Nonetheless, intense efficacy for in vivo treatment is restricted by inadequate photocatalytic activity and visible light response.

Methods: In this study, we designed a photocatalytic heterostructure using graphitic carbon nitride (g-CN) and tin disulfide (SnS) to synthesize g-CN/SnS heterostructure through hydrothermal process.

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A combination of therapeutic modalities in a single nanostructure is crucial for a successful cancer treatment. Synergistic photothermal therapy (PTT) can enhance the effects of chemodynamic therapy (CDT) and chemotherapy, which could intensify the therapeutic efficacy to induce cancer cell apoptosis. In this study, Fe and Mn on a zeolitic imidazolate framework (ZIF-8) (Fe/Mn-ZIF-8; FMZ) were synthesized through ion deposition.

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A variety of variables influence food texture, two of which are gelation and emulsification. Protein interactions have an important role in influencing gelation and emulsifying properties. The utilization of plant proteins in the development of food systems is a prominent subject within the current protein transition paradigm.

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Water splitting is promising, especially for energy and environmental applications; however, there are limited studies on the link between water splitting and cancer treatment. Upconversion nanoparticles (UCNPs) can be used to convert near-infrared (NIR) light to ultraviolet (UV) or visible (Vis) light and have great potential for biomedical applications because of their profound penetration ability, theranostic approaches, low self-fluorescence background, reduced damage to biological tissue, and low toxicity. UCNPs with photocatalytic materials can enhance the photocatalytic activities that generate a shorter wavelength to increase the tissue penetration depth in the biological microenvironment under NIR light irradiation.

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Combining chemodynamic therapy (CDT) with photothermal therapy (PTT) has developed as a promising approach for cancer treatment, as it enhances therapeutic efficiency through redox reactions and external laser induction. In this study, we designed metal organic framework (MOF) -derived CuZn/HPCNC through a carbonization process and decorated them with gold nanoparticles (Au@CuZn/HPCNC). The resulting nanoparticles were employed as a photothermal agent and Fenton catalyst.

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Article Synopsis
  • Traditional cancer treatments often fail and can cause severe side effects, leading to the exploration of new therapies like chemodynamic therapy (CDT), which targets cancer cells by inducing the formation of toxic species.
  • A new effective therapeutic platform was developed using FeMoO nanorods to enhance in-situ activation of the Fenton reaction within tumor environments, generating hydroxyl radicals that help destroy cancer cells, while also improving effectiveness through photothermal and magnetic hyperthermia.
  • The study demonstrated that the combined approach of magnetic heating, photothermal therapy, and CDT using these nanorods significantly increased anticancer effects, suggesting a promising strategy for iron-based nanoparticles in medical applications.
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Water pollution has emerged as a major global environmental crisis due to the massive contamination of water resources by the textile dyeing industry, organic waste, and agricultural residue. Since water is fundamental to life, this grave disregard puts lives at risk, making the protection of water resources a serious issue today. Recent research has shown great interest in improving the photocatalytic performance of graphitic carbon nitride (g-CN) for wastewater treatment.

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This study prepared dumbbell-shaped titanium dioxide (TiO)/gold nanorods (AuNRs) coated with mesoporous silica shells (mS) (AuNRs-TiO@mS). Methotrexate (MTX) was further loaded into the AuNRs-TiO@mS, and then upconversion nanoparticles (UCNPs) were decorated to form AuNRs-TiO@mS-MTX: UCNP nanocomposites. TiO is used as an intense photosensitizer (PS) to produce cytotoxic reactive oxygen species (ROS), leading to photodynamic therapy (PDT).

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Herein, we fabricated gold surface-coated iron titanium core-shell (FeTi@Au) nanoparticles (NPs) with conjugation of angiopep-2 (ANG) (FeTi@Au-ANG) NPs for targeted delivery and improved NPs penetration by receptor-mediated endocytosis to achieve hyperthermic treatment of gliomas. The synthesized "core-shell" FeTi@Au-ANG NPs exhibited spherical in shape with around 16 nm particle size and increased temperature upon alternating magnetic field (AMF) stimulation, rendering them effective for localized hyperthermic therapy of cancer cells. Effective targeted delivery of FeTi@Au-ANG NPs was demonstrated in vitro by improved transport and cellular uptake, and increased apoptosis in glioma cells (C6) compared with normal fibroblast cells (L929).

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The poor permeability of therapeutic agents across the blood-brain barrier and blood-tumor barrier is a significant barrier in glioma treatment. Low-density lipoprotein receptor-related protein (LRP-1) recognises a dual-targeting ligand, angiopep-2, which is overexpressed in the BBB and gliomas. Here, we have synthesized Ti@FeAu core-shell nanoparticles conjugated with angiopep-2 (Ti@FeAu-Ang nanoparticles) to target glioma cells and treat brain cancer hyperthermia produced by a magnetic field.

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The main causes for failure in implant surgery are prolonged exposure of implants or wound and tissue ischemia. Bacterial infection caused by the surrounding medical environment and equipment is also a major risk factor. The medical risk would be greatly reduced if we could develop an implant coating to guide tissue growth and promote antibacterial activity.

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