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Updated: May 23, 2026
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Solid Lipid Nanoparticles (SLNs) for Intracellular Targeting Applications
Published on: November 17, 2015
Absorption, disposition and pharmacokinetics of solid lipid nanoparticles
1Department of Pharmaceutics, School of Pharmacy, Fudan University, 826 Zhangheng Road, Shanghai, PR China.
Current Drug Metabolism
|March 27, 2012
Summary
Solid lipid nanoparticles (SLNs) offer enhanced drug absorption across various routes due to their lipidic nature and small size. Surface modifications can further direct SLN distribution and improve drug delivery outcomes.
Area of Science:
- Nanotechnology
- Materials Science
- Pharmacology
Background:
- Solid lipid nanoparticles (SLNs) are advanced colloidal carriers.
- They combine benefits of soft and polymeric nanoparticles.
- SLNs exhibit biocompatibility, biodegradability, and low toxicity.
Purpose of the Study:
- To review the absorption, disposition, and pharmacokinetics of SLNs.
- To highlight SLNs as versatile drug delivery systems.
- To discuss factors influencing SLN behavior in vivo.
Main Methods:
- Literature review focusing on SLN absorption and disposition.
- Analysis of pharmacokinetic data for SLNs via different administration routes.
- Examination of surface modification strategies for SLNs.
Main Results:
- SLNs demonstrate improved absorption across oral, transdermal, pulmonary, nasal, ocular, rectal, and buccal routes.
- Oral SLNs show enhanced lymphatic uptake via specific pathways.
- Intravenous SLNs are primarily cleared by the liver/spleen, but PEGylation or ligand modification can alter biodistribution.
Conclusions:
- SLNs are effective drug delivery vehicles with tunable pharmacokinetic profiles.
- Surface modifications offer targeted delivery and altered biodistribution.
- Lipid degradation by lipase is the primary elimination pathway for SLNs.
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