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Cabibbo M, Scialabba C, Craparo EF, Carneiro SP, Merkel OM, Cavallaro G. Diving into RNAi Therapy: An Inhalable Formulation Based on Lipid-Polymer Hybrid Systems for Pulmonary Delivery of siRNA. Biomacromolecules 2024. [PMID: 39665463 DOI: 10.1021/acs.biomac.4c00387] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2024]
Abstract
Here, a pulmonary formulation based on lipid-polymer hybrid nanoparticles carrying small interfering RNA (siRNA) was developed to realize a RNA interference-based therapy to treat respiratory diseases. Toward this aim, a new copolymer was synthesized, by functionalization of the α,β-poly(N-2-hydroxyethyl)-d,l-aspartamide with 35 mol % of 1,2-bis(3-aminopropylamino)ethane, 0.4 mol % of fluorescent dye, and 4.5 mol % of poly(lactic-co-glycolic acid). This was used to encapsulate siRNA targeting the green fluorescent protein (siGFP), within a lipid shell made from 1,2-dipalmitoyl-sn-glycero-3-phosphocholine and 1,2-distearoyl-sn-glycero-phosphoethanolamine-N-(polyethylene glycol)2000. siGFP-loaded lipid-polymer hybrid nanoparticles (LPHFNPs@siGFP) exhibited colloidal size (∼164 nm), positive ζ potential, high siRNA encapsulation efficiency (∼99%), and a core-shell morphology. They showed high cellular uptake and a gene silencing efficiency of ∼50% in human lung cancer cells expressing GFP. To address aerodynamic challenges, LPHFNPs@siGFP were spray-dried with trehalose, yielding spherical particles (∼3 μm) with 80% siRNA encapsulation efficiency, excellent aerosolization properties, and a gene silencing efficiency comparable to the fresh LPHFNPs@siGFP sample.
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Affiliation(s)
- Marta Cabibbo
- Lab of Biocompatible Polymers, Department of Biological, Chemical and Pharmaceutical Sciences and Technologies (STEBICEF), University of Palermo, Via Archirafi 32, Palermo 90123, Italy
| | - Cinzia Scialabba
- Lab of Biocompatible Polymers, Department of Biological, Chemical and Pharmaceutical Sciences and Technologies (STEBICEF), University of Palermo, Via Archirafi 32, Palermo 90123, Italy
| | - Emanuela F Craparo
- Lab of Biocompatible Polymers, Department of Biological, Chemical and Pharmaceutical Sciences and Technologies (STEBICEF), University of Palermo, Via Archirafi 32, Palermo 90123, Italy
| | - Simone P Carneiro
- Department of Pharmacy, Pharmaceutical Technology and Biopharmacy, Ludwig-Maximilians-University, Butenandtstrasse 5-13, 81337 Munich, Germany
| | - Olivia M Merkel
- Department of Pharmacy, Pharmaceutical Technology and Biopharmacy, Ludwig-Maximilians-University, Butenandtstrasse 5-13, 81337 Munich, Germany
| | - Gennara Cavallaro
- Lab of Biocompatible Polymers, Department of Biological, Chemical and Pharmaceutical Sciences and Technologies (STEBICEF), University of Palermo, Via Archirafi 32, Palermo 90123, Italy
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Maani Z, Rahbarnia L, Bahadori A, Chollou KM, Farajnia S. Spotlight on HIV-derived TAT peptide as a molecular shuttle in drug delivery. Drug Discov Today 2024; 29:104191. [PMID: 39322176 DOI: 10.1016/j.drudis.2024.104191] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2024] [Revised: 09/08/2024] [Accepted: 09/19/2024] [Indexed: 09/27/2024]
Abstract
HIV-derived TAT peptide, with a high penetration rate into cells and its nonimmunogenic and minimally toxic nature, is an attractive tool for enhancing the biodistribution of drugs and their systemic administration. Despite the presence of numerous promising preclinical investigations illustrating its capability to specifically target distinct tissues and deliver a diverse range of pharmacological agents, the efficacy of various clinical trials incorporating TAT has been impeded by several considerable obstacles. Hence, there is much need for an in-depth investigation concerning the application of TAT in drug delivery mechanisms. In this review, we have elucidated the structure of TAT and its utility in the proficient delivery of various types of bioactive molecules.
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Affiliation(s)
- Zahra Maani
- Drug Applied Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Leila Rahbarnia
- Infectious and Tropical Diseases Research Center, Tabriz University of Medical Sciences, Tabriz, Iran.
| | - Ali Bahadori
- Department of Medical Microbiology, Sarab Faculty of Medical Sciences, Sarab, Iran
| | | | - Safar Farajnia
- Drug Applied Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
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Biscari G, Malkoch M, Fiorica C, Fan Y, Palumbo FS, Indelicato S, Bongiorno D, Pitarresi G. Gellan gum-dopamine mediated in situ synthesis of silver nanoparticles and development of nano/micro-composite injectable hydrogel with antimicrobial activity. Int J Biol Macromol 2024; 258:128766. [PMID: 38096933 DOI: 10.1016/j.ijbiomac.2023.128766] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2023] [Revised: 11/30/2023] [Accepted: 12/11/2023] [Indexed: 12/22/2023]
Abstract
Infected skin wounds represent a serious health threat due to the long healing process and the risk of colonization by multi-drug-resistant bacteria. Silver nanoparticles (AgNPs) have shown broad-spectrum antimicrobial activity. This study introduces a novel approach to address the challenge of infected skin wounds by employing gellan gum-dopamine (GG-DA) as a dual-functional agent, serving both as a reducing and capping agent, for the in situ green synthesis of silver nanoparticles. Unlike previous methods, this work utilizes a spray-drying technique to convert the dispersion of GG-DA and AgNPs into microparticles, resulting in nano-into-micro systems (AgNPs@MPs). The microparticles, with an average size of approximately 3 μm, embed AgNPs with a 13 nm average diameter. Furthermore, the study explores the antibacterial efficacy of these AgNPs@MPs directly and in combination with other materials against gram-positive and gram-negative bacteria. The versatility of the antimicrobial material is showcased by incorporating the microparticles into injectable hydrogels. These hydrogels, based on oxidized Xanthan Gum (XGox) and a hyperbranched synthetic polymer (HB10K-G5-alanine), are designed with injectability and self-healing properties through Shiff base formation. The resulting nano-into-micro-into-macro hybrid hydrogel emerges as a promising biomedical solution, highlighting the multifaceted potential of this innovative approach in wound care and infection management.
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Affiliation(s)
| | - Michael Malkoch
- KTH Royal Institute of Technology, Teknikringen 56-58, Stockholm SE-100 44, Sweden.
| | | | - Yanmiao Fan
- KTH Royal Institute of Technology, Teknikringen 56-58, Stockholm SE-100 44, Sweden.
| | | | | | - David Bongiorno
- University of Palermo, Via Archirafi 32, Palermo 90123, Italy.
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