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Recent Applications of PLGA-Based Nanoparticles in Drug Delivery

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

Deadline for manuscript submissions: closed (31 March 2023) | Viewed by 6912

Special Issue Editor


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Guest Editor
Department of Physical Chemistry and Materials Science, University of Szeged, H-6720 Szeged, Hungary
Interests: colloids; self-assembly; drug-delivery; thin films; serum albumin; kynurenic acid; PLGA; atomic force microscopy; isotherm titration calorimetry

Special Issue Information

Dear Colleagues,

The new drug delivery strategies provide major advances over conventional medicine in the delivery of different drugs in a controlled and targeted manner with enhanced bioavailability and thus reduced side effects. Among the different polymer-based drug delivery systems, poly (lactic-co-glycolic acid) (PLGA), the synthetic block copolymer of lactic acid and glycolic acid, is one of the leading carriers in modern biomedical investigations both in local, long-term, and targeted drug delivery. Their popularity arises from their favorable physicochemical properties, their versatility towards modification, their biocompatibility, and their ability to improve the distribution and bioavailability of pharmaceutics. PLGA also plays an important role in the development of controlled and targeted drug delivery systems in the form of nanoparticles, microcapsules, and matrices. However, there are some drawbacks in the application of PLGA such as its low encapsulation efficiency and limited release of certain drugs.

The Special Issue aims to present novel PLGA-based treatment strategies, including encapsulation and transport of pharmaceuticals, in the treatment of various diseases and disorders. Topics may also include any aspects of the design, characterization, and functionalization of PLGA-containing delivery systems. State-of-the-art research on promising systems with both in vitro and in vivo analysis and controlled release with potential pre-clinical application is also welcome. We are looking forward to receiving manuscripts focused on the most recent advances in the field of PLGA-based drug delivery systems.

Dr. Viktória Varga
Guest Editor

Manuscript Submission Information

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Keywords

  • PLGA
  • poly (lactic-co-glycolic acid)
  • drug delivery
  • encapsulation
  • sustained release
  • targeted therapy

Published Papers (2 papers)

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Research

13 pages, 4603 KiB  
Article
Study of siRNA Delivery via Polymeric Nanoparticles in Combination with Angiogenesis Inhibitor for The Treatment of AFP-Related Liver Cancer
by Kittiporn Punuch, Chamaiphorn Wongwan, Saranrat Jantana, Chayapol Somboonyosdech, Kamonlatth Rodponthukwaji, Natsuda Kunwong, Kytai T. Nguyen, Vorapan Sirivatanauksorn, Yongyut Sirivatanauksorn, Chatchawan Srisawat and Primana Punnakitikashem
Int. J. Mol. Sci. 2022, 23(20), 12666; https://doi.org/10.3390/ijms232012666 - 21 Oct 2022
Cited by 7 | Viewed by 2214
Abstract
Angiogenesis inhibitor drugs have been explored as important pharmacological agents for cancer therapy, including hepatocellular carcinoma. These agents have several drawbacks, such as drug resistance, nonspecific toxicity, and systemic side effects. Therefore, combination therapy of the drug and small interfering RNA could be [...] Read more.
Angiogenesis inhibitor drugs have been explored as important pharmacological agents for cancer therapy, including hepatocellular carcinoma. These agents have several drawbacks, such as drug resistance, nonspecific toxicity, and systemic side effects. Therefore, combination therapy of the drug and small interfering RNA could be a promising option to achieve high therapeutic efficacy while allowing a lower systemic dose. Therefore, we studied adding an alpha-fetoprotein siRNA (AFP-siRNA) incorporated on polymeric nanoparticles (NPs) along with angiogenesis inhibitor drugs. The AFP siRNA-loaded NPs were successfully synthesized at an average size of 242.00 ± 2.54 nm. Combination treatment of AFP-siRNA NPs and a low dose of sunitinib produced a synergistic effect in decreasing cell viability in an in vitro hepatocellular carcinoma (HCC) model. AFP-siRNA NPs together with sorafenib or sunitinib greatly inhibited cell proliferation, showing only 39.29 ± 2.72 and 44.04 ± 3.05% cell viability, respectively. Moreover, quantitative reverse transcription PCR (qRT-PCR) demonstrated that AFP-siRNA incorporated with NPs could significantly silence AFP-mRNA expression compared to unloaded NPs. Interestingly, the expression level of AFP-mRNA was further decreased to 28.53 ± 5.10% when sunitinib was added. Therefore, this finding was considered a new promising candidate for HCC treatment in reducing cell proliferation and enhancing therapeutic outcomes. Full article
(This article belongs to the Special Issue Recent Applications of PLGA-Based Nanoparticles in Drug Delivery)
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15 pages, 2494 KiB  
Article
Radiodynamic Therapy Using TAT Peptide-Targeted Verteporfin-Encapsulated PLGA Nanoparticles
by Sandhya Clement, Ayad G. Anwer, Layla Pires, Jared Campbell, Brian C. Wilson and Ewa M. Goldys
Int. J. Mol. Sci. 2021, 22(12), 6425; https://doi.org/10.3390/ijms22126425 - 15 Jun 2021
Cited by 16 | Viewed by 3756
Abstract
Radiodynamic therapy (RDT) is a recent extension of conventional photodynamic therapy, in which visible/near infrared light irradiation is replaced by a well-tolerated dose of high-energy X-rays. This enables greater tissue penetration to allow non-invasive treatment of large, deep-seated tumors. We report here the [...] Read more.
Radiodynamic therapy (RDT) is a recent extension of conventional photodynamic therapy, in which visible/near infrared light irradiation is replaced by a well-tolerated dose of high-energy X-rays. This enables greater tissue penetration to allow non-invasive treatment of large, deep-seated tumors. We report here the design and testing of a drug delivery system for RDT that is intended to enhance intra- or peri-nuclear localization of the photosensitizer, leading to DNA damage and resulting clonogenic cell kill. This comprises a photosensitizer (Verteporfin, VP) incorporated into poly (lactic-co-glycolic acid) nanoparticles (PLGA NPs) that are surface-functionalized with a cell-penetrating HIV trans-activator of transcription (TAT) peptide. In addition to a series of physical and photophysical characterization studies, cytotoxicity tests in pancreatic (PANC-1) cancer cells in vitro under 4 Gy X-ray exposure from a clinical 6 MV linear accelerator (LINAC) showed that TAT targeting of the nanoparticles markedly enhances the effectiveness of RDT treatment, particularly when assessed by a clonogenic, i.e., DNA damage-mediated, cell kill. Full article
(This article belongs to the Special Issue Recent Applications of PLGA-Based Nanoparticles in Drug Delivery)
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