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Advancements in Novel Drug Delivery Systems for Gene and Drug Delivery

A special issue of International Journal of Molecular Sciences (ISSN 1422-0067). This special issue belongs to the section "Molecular Biology".

Deadline for manuscript submissions: 20 March 2026 | Viewed by 850

Special Issue Editor


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Guest Editor
Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, 98166 Messina, Italy
Interests: natural antivirals; host and viruses interaction; intracellular trafficking of viral infection; herpesviruses; HSV-1; viral immune evasion; virus-induced cell death; RNAi; small RNAs as therapeutics
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Special Issue Information

Dear Colleagues,

In recent years, drug and gene delivery technologies have undergone significant advancements, leading to the development of more precise, efficient, and safer therapeutic strategies. Traditional drug delivery methods often face challenges such as low bioavailability, off-target effects, and rapid systemic clearance. Similarly, gene therapy approaches require innovative carriers to ensure efficient cellular uptake, stability, and targeted delivery. To address these challenges, researchers have increasingly focused on novel delivery platforms, including nanotechnology-based carriers, biomaterial-based systems, and bioengineered vectors. These advancements are particularly relevant for the treatment of complex diseases such as cancer, infectious diseases, and genetic disorders, where targeted and controlled drug and gene release can significantly improve therapeutic outcomes. This Special Issue aims to collect the latest research and innovations in this field, focusing on cutting-edge delivery platforms, biocompatible nanocarriers, and emerging biomaterial-based approaches. We invite researchers to contribute original studies and systematic reviews that explore innovative strategies for enhancing the precision, efficacy, and biocompatibility of drug and gene delivery systems. We encourage submissions of papers covering (1) nanoparticle-based delivery systems such as liposomes, polymeric nanoparticles, dendrimers, and graphene- and lipid-based carriers for drug and gene transport; (2) viral and non-viral gene delivery approaches such as CRISPR/Cas9 systems, siRNA/mRNA therapeutics, and novel vector technologies; and (3) advanced biomaterials such as hydrogels, micelles, and extracellular vesicles for sustained and controlled release.

Dr. Rosamaria Pennisi
Guest Editor

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Keywords

  • drug and gene delivery
  • novel drug delivery systems
  • nanoparticle-based delivery systems

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Published Papers (1 paper)

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Research

11 pages, 1417 KB  
Article
Biodegradable Nanoparticles Encapsulating Murine Double Minute 2 siRNA to Treat Peritoneal Dissemination of Colon Cancer
by Tomoaki Kurosaki, Akari Okada, Yuuki Takashima, Hitoshi Sasaki and Yukinobu Kodama
Int. J. Mol. Sci. 2025, 26(18), 8883; https://doi.org/10.3390/ijms26188883 - 12 Sep 2025
Viewed by 554
Abstract
The study aim was to apply murine double minute 2 (MDM2)-siRNA to a biodegradable siRNA delivery vector, ternary complex, for treating colorectal cancer peritoneal dissemination. The ternary complex containing MDM2-siRNA (MDM2-siRNA complex) was constructed by mixing MDM2-siRNA, dendrigraft poly-L-lysine, and γ-polyglutamic acid. Cellular [...] Read more.
The study aim was to apply murine double minute 2 (MDM2)-siRNA to a biodegradable siRNA delivery vector, ternary complex, for treating colorectal cancer peritoneal dissemination. The ternary complex containing MDM2-siRNA (MDM2-siRNA complex) was constructed by mixing MDM2-siRNA, dendrigraft poly-L-lysine, and γ-polyglutamic acid. Cellular uptake of the ternary complex and suppressive effect on MDM2-mRNA were determined in a mouse colorectal cancer cell line. Tumor-growth inhibition by the MDM2-siRNA complex was evaluated in peritoneal dissemination model mice. The MDM2-siRNA complex, with an approximately 177 nm particle size and −35 mV ζ-potential, prevented degradation of the inner siRNA by RNase. In the in vitro study, the ternary complex was highly taken up by the cells, and 2 μg/mL of the MDM2-siRNA complex significantly decreased MDM2-mRNA to about 30% of control cells. Intraperitoneal administration in colorectal cancer peritoneal dissemination model mice showed little effect of the ternary complex containing scramble-siRNA on cancer growth in the peritoneal cavity. Conversely, the MDM2-siRNA complex significantly reduced peritoneal dissemination to less than 1/1000th of control mice and successfully prolonged survival time. In this study, we found that the biodegradable MDM2-siRNA complex had a suppressive effect on MDM2-mRNA in cancer cells and tumor growth of peritoneal dissemination. Full article
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