Nose-to-brain delivery of BACE1 siRNA loaded in solid lipid nanoparticles for Alzheimer’s therapy
Abstract
We designed a delivery system to obtain an efficient and optimal nose-to-brain transport of BACE1 siRNA, potentially useful in the treatment of Alzheimer's disease. We selected a cell-penetrating peptide, the short peptide derived from rabies virus glycoprotein known as RVG-9R, to increase the transcellular pathway in neuronal cells. The optimal molar ratio between RVG-9R and BACE1 siRNA was elucidated. The complex between the two was then encapsulated. We propose chitosan-coated and uncoated solid lipid nanoparticles (SLNs) as a nasal delivery system capable of exploiting both olfactory and trigeminal nerve pathways. The coating process had an effect on the zeta potential, obtaining positively-charged nanoparticles, and on siRNA protection. The positive charge of the coating formulation ensured mucoadhesiveness to the particles and also prolonged residence time in the nasal cavity. We studied the cellular transport of siRNA released from the SLNs using Caco-2 as a model of epithelial-like phenotypes. We found that siRNA permeates the monolayer to a greater extent when released from any of the studied formulations than from bare siRNA, and primarily from chitosan-coated SLNs.
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Different kinds of nanocarriers used to prepare nasal formulations able to target the brain include polymer-based and lipid-based nanoparticles.
“According to the present literature, different kinds of nanocarriers are used to prepare nasal formulations able to target the brain, constituted by polymer-based and lipid-based nanoparticles [21,22,23].”
From Nanoemulsions for “Nose-to-Brain” Drug Delivery (2019) · cites this paper as [21]
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- Authors
- Rassu, G., Soddu, E., Posadino, A. M., Pintus, G., Sarmento, B., Giunchedi, P., & Gavini, E.
- Affiliations
- University of Sassari (IT)
- Qatar University (QA)
- Cooperativa de Ensino Superior Politécnico e Universitário (PT)
- Corresponding author
- Gavini, Elisabetta
- ORCID
- Venue
- Colloids and Surfaces B: Biointerfaces
- Publisher
- Elsevier BV
- Published
- 2017-04
- Volume
- 152
- Pages
- 296-301
- ISSN
- 0927-7765 (ISSN-L)
- OpenAlex
- W2579344533
- Cited by
- 239
- References
- 40
- Citations by year
- 2026: 16 · 2025: 24 · 2024: 35 · 2023: 34 · 2022: 26 · 2021: 35 · 2020: 30 · 2019: 17 · 2018: 20 · 2017: 2
- FWCI
- 9.70
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Colloids and Surfaces B Biointerfaces (publishedVersion)
- PubMed (publishedVersion)
- UnissResearch (Università degli Studi di Sassari) (submittedVersion)
- Qatar University QSpace (Qatar University) (submittedVersion)
- Funders
- Prof Paola Rapelli for donating the Caco-2 cells
- Topics
- Life Sciences › Pharmacology, Toxicology and Pharmaceutics › Pharmaceutical Science › Advanced Drug Delivery Systems
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › RNA Interference and Gene Delivery
- Physical Sciences › Materials Science › Biomaterials › Nanoparticle-Based Drug Delivery
- Keywords
- nose-to-brain delivery, solid lipid nanoparticles, Alzheimer's disease, cell-penetrating peptides, chitosan coating, intranasal drug delivery, mucoadhesion, Caco-2 cells, zeta potential
- MeSH terms
- Alzheimer Disease, Brain, Drug Carriers, Humans, Nasal Mucosa, Aspartic Acid Endopeptidases, Caco-2 Cells, RNA, Small Interfering, Chitosan, Nanoparticles, Amyloid Precursor Protein Secretases, Cell-Penetrating Peptides
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