Related Experiment Video
Updated: Jul 16, 2026
08:19
Solid Lipid Nanoparticles (SLNs) for Intracellular Targeting Applications
Published on: November 17, 2015
Stimuli-responsive solid lipid nanoparticles for targeted drug delivery in biofilm-resistant infections: advances and
Dakshinesh P1, Suriya Prakaash K K1, Damodharan Narayanasamy1
1Department of Pharmaceutics, SRM College of Pharmacy, Faculty of Medicine and Health Sciences, SRM Institute of Science and Technology, Kattankulathur, India.
Drug Development and Industrial Pharmacy
|July 15, 2026
Summary
Stimuli-responsive solid lipid nanoparticles (SLNs) offer a promising approach to combat biofilm infections by enhancing antibiotic delivery. Further research is needed to overcome challenges for successful clinical translation of these advanced drug delivery systems.
Area of Science:
- Biomedical Engineering
- Nanotechnology
- Drug Delivery
Background:
- Biofilm-associated infections are a major healthcare challenge due to microbial resistance and poor antibiotic penetration.
- Solid lipid nanoparticles (SLNs) show potential for drug delivery due to biocompatibility and controlled release.
- Stimuli-responsive SLNs enhance drug delivery to biofilms by releasing therapeutics in response to triggers like pH, enzymes, temperature, or light.
Purpose of the Study:
- To review the design, mechanisms, and therapeutic potential of stimuli-responsive SLNs for biofilm-targeted drug delivery.
- To highlight recent advancements and future directions in this field.
Main Methods:
- Review of preclinical studies on SLNs and stimuli-responsive SLNs for biofilm infections.
- Analysis of drug formulations including ciprofloxacin, vancomycin, rifampin, and tobramycin in SLNs/NLCs.
- Evaluation of in vitro and in vivo models assessing antibiofilm activity.
Main Results:
- SLN-based formulations significantly reduced biofilm biomass and improved antibiotic efficacy in preclinical models.
- Stimuli-responsive SLNs demonstrated enhanced biofilm penetration, drug retention, and therapeutic outcomes.
- Preclinical studies showed improved antibiofilm activity of various antibiotics formulated in SLNs/NLCs compared to free drugs.
Conclusions:
- Stimuli-responsive SLNs are a promising strategy to overcome biofilm resistance and improve antibiotic delivery.
- Challenges in drug-loading capacity, stability, manufacturability, and clinical translation need to be addressed.
- Further research optimizing SLN design and understanding biofilm interactions is crucial for clinical application.
Related Concept Videos
01:29Biofilms
Biofilms are complex communities of microorganisms encased in a self-produced extracellular polysaccharide matrix attached to surfaces. These microbial consortia can include single or multiple species, providing enhanced survival benefits by forming organized, multilayered structures.The formation of biofilms occurs through four key stages: attachment, colonization, development, and dispersal.During attachment, free-swimming planktonic cells adhere to a surface, often facilitated by...
01:27Bioavailability Enhancement: Drug Permeability Enhancement
After oral administration, poor permeability often limits the rate at which drugs are absorbed through the intestinal epithelium. Enhancing drug permeability is crucial for effective therapy, and several strategies have been developed to overcome this challenge.One effective strategy involves the use of lipid-based formulations. These formulations enhance dissolution and solubility, targeting physiological mechanisms to increase drug absorption. This includes stimulating bile salt secretion,...
01:24Site-Targeted Drug Delivery Systems: Polymeric Carriers
Polymeric carriers enhance targeted drug delivery by increasing efficacy while minimizing off-target effects. These carriers comprise a biodegradable polymeric backbone integrated with functional elements that enable targeting, improve physicochemical properties, and regulate drug release.Targeting MechanismsThe targeting ability of polymeric carriers is mediated by a homing device, which is a molecular recognition component designed to selectively bind to specific tissues or cells. Monoclonal...
01:16Bioavailability Enhancement: Drug Solubility Enhancement
Bioavailability is a critical factor in determining a drug's effectiveness. It refers to the proportion of a drug that enters the circulation when introduced into the body and is, as a result, able to have an active effect. Enhancing bioavailability is essential for drugs with poor solubility, as it can significantly impact their therapeutic efficacy. Various methods are employed to increase the solubility of drugs, thereby enhancing their bioavailability.Micronization and nanonization are...
01:24Modified-Release Drug Delivery Systems: Site-Targeted
Site-targeted drug delivery systems enhance therapeutic efficacy while minimizing systemic toxicity and treatment costs. Unlike conventional methods, these systems ensure precise drug delivery, improving bioavailability and reducing side effects. Targeted drug delivery is classified into three levels. First-order targeting directs drugs to the capillary beds of specific organs or tissues. Second-order targets specific cell types, such as tumor cells, using receptor-mediated interactions.
01:05Bioavailability Enhancement: Drug Stability Enhancement and GI Retention
Improving a drug's stability in the gastrointestinal (GI) tract is paramount for enhancing its bioavailability and therapeutic effectiveness. Various strategies are employed to protect the drug from the harsh gastric milieu and to ensure its release and absorption at the desired site within the GI tract.Polymer coatings are one such method used to shield drugs from the stomach's acidic environment. By preventing premature drug release, these coatings improve the bioavailability of unstable...