Lipid/Polymer-Based Drug Delivery Systems

A special issue of Pharmaceutics (ISSN 1999-4923). This special issue belongs to the section "Drug Delivery and Controlled Release".

Deadline for manuscript submissions: closed (20 April 2024) | Viewed by 946

Special Issue Editors

College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, China
Interests: biomedical application of silver nanoparticles; lipid-based drug delivery carriers; novel antiparasitic agents

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Guest Editor
College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, China
Interests: molecular pharmacology and toxicology; drug delivery systems; drug safety evaluation

Special Issue Information

Dear Colleagues,

Lipid/polymer-based nano delivery systems have attracted the interest of many researchers due to their unique qualities, such as the size, shape, surface modification and functionalization, mechanical strength, biodegradability, biocompatibility, etc. Lipid/polymer-based drug delivery systems could improve drug solubility, drug protection, and controlled and targeted drug delivery, exhibiting great clinical and commercial application potential in antibacterial and wound healing, mRNA virus vaccines, cancer therapy, nerve and ocular disease treatments, etc.

This Special Issue focus on the latest advances and original work concerning lipid/polymer-based drug delivery system and their biomedical applications, including novel or improved synthetic routes, findings on new properties and bio–nano interactions, and translational and comparative studies. In addition, relevant biosafety and toxicity studies can be discussed.

Dr. Dawei Guo
Dr. Xiuge Gao
Guest Editors

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Keywords

  • lipid-based nanomaterials
  • polymer-based nanoparticles
  • lipid/polymer hybrid nanoparticles
  • targeted drug delivery
  • antimicrobial application
  • wound healing
  • cancer therapy
  • mRNA vaccines
  • transdermal delivery
  • oral administration

Published Papers (2 papers)

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Research

15 pages, 2865 KiB  
Article
Enhanced In Vitro Antiviral Activity of Ivermectin-Loaded Nanostructured Lipid Carriers against Porcine Epidemic Diarrhea Virus via Improved Intracellular Delivery
by Xiaolin Xu, Shasha Gao, Qindan Zuo, Jiahao Gong, Xinhao Song, Yongshi Liu, Jing Xiao, Xiaofeng Zhai, Haifeng Sun, Mingzhi Zhang, Xiuge Gao and Dawei Guo
Pharmaceutics 2024, 16(5), 601; https://doi.org/10.3390/pharmaceutics16050601 - 29 Apr 2024
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Abstract
Porcine epidemic diarrhea virus (PEDV) is an acute enteric coronavirus, inducing watery diarrhea and high mortality in piglets, leading to huge economic losses in global pig industry. Ivermectin (IVM), an FDA-approved antiparasitic agent, is characterized by high efficacy and wide applicability. However, the [...] Read more.
Porcine epidemic diarrhea virus (PEDV) is an acute enteric coronavirus, inducing watery diarrhea and high mortality in piglets, leading to huge economic losses in global pig industry. Ivermectin (IVM), an FDA-approved antiparasitic agent, is characterized by high efficacy and wide applicability. However, the poor bioavailability limits its application. Since the virus is parasitized inside the host cells, increasing the intracellular drug uptake can improve antiviral efficacy. Hence, we aimed to develop nanostructured lipid carriers (NLCs) to enhance the antiviral efficacy of IVM. The findings first revealed the capacity of IVM to inhibit the infectivity of PEDV by reducing viral replication with a certain direct inactivation effect. The as-prepared IVM-NLCs possessed hydrodynamic diameter of 153.5 nm with a zeta potential of −31.5 mV and high encapsulation efficiency (95.72%) and drug loading (11.17%). IVM interacted with lipids and was enveloped in lipid carriers with an amorphous state. Furthermore, its encapsulation in NLCs could enhance drug internalization. Meanwhile, IVM-NLCs inhibited PEDV proliferation by up to three orders of magnitude in terms of viral RNA copies, impeding the accumulation of reactive oxygen species and mitigating the mitochondrial dysfunction caused by PEDV infection. Moreover, IVM-NLCs markedly decreased the apoptosis rate of PEDV-induced Vero cells. Hence, IVM-NLCs showed superior inhibitory effect against PEDV compared to free IVM. Together, these results implied that NLCs is an efficient delivery system for IVM to improve its antiviral efficacy against PEDV via enhanced intracellular uptake. Full article
(This article belongs to the Special Issue Lipid/Polymer-Based Drug Delivery Systems)
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17 pages, 4360 KiB  
Article
Drug Release from Lipid Microparticles—Insights into Drug Incorporation and the Influence of Physiological Factors
by Eliza Wolska and Karolina Sadowska
Pharmaceutics 2024, 16(4), 545; https://doi.org/10.3390/pharmaceutics16040545 - 15 Apr 2024
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Abstract
The aim of this study was to assess the impact of physiological factors, namely tear fluid and lysozyme enzyme, as well as surfactant polysorbate, on the release profile from solid lipid microparticles (SLM), in the form of dispersion intended for ocular application. Indomethacin [...] Read more.
The aim of this study was to assess the impact of physiological factors, namely tear fluid and lysozyme enzyme, as well as surfactant polysorbate, on the release profile from solid lipid microparticles (SLM), in the form of dispersion intended for ocular application. Indomethacin (Ind) was used as a model drug substance and a release study was performed by applying the dialysis bag method. Conducting release studies taking into account physiological factors is expected to improve development and screening studies, as well as support the regulatory assessment of this multi-compartment lipid dosage form. The effect of the lysozyme was directly related to its effect on lipid microparticles, as it occurred only in their presence (no effect on the solubility of Ind). Polysorbate also turned out to be an important factor interacting with the SLM surface, which determined the release of Ind from SLM. However, in study models without tear fluid or lysozyme, the release of Ind did not exceed 60% within 96 h. Ultimately, only the simultaneous application of artificial tear fluid, lysozyme, and polysorbate allowed for the release of 100% of Ind through the SLM dispersion. The examination of the residues after the release studies indicated the possibility of releasing 100% of Ind from SLM without complete degradation of the microparticles’ matrix. The incubation of SLM with tear fluid confirmed a similar influence of physiological factors contained in tear fluid on the surface structure of SLM as that observed during the in vitro studies. Full article
(This article belongs to the Special Issue Lipid/Polymer-Based Drug Delivery Systems)
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