Related Experiment Video
Updated: Jun 4, 2026
09:41
Formulating and Characterizing Lipid Nanoparticles for Gene Delivery using a Microfluidic Mixing Platform
Published on: February 25, 2021
Non-viral nucleic acid delivery: key challenges and future directions
Mahmoud Elsabahy1, Adil Nazarali, Marianna Foldvari
1School of Pharmacy, University of Waterloo, 10 Victoria St. S, Kitchener (ON) N2G 1C5, Canada.
Current Drug Delivery
|February 5, 2011
Summary
Gene therapy offers potential for treating genetic disorders by delivering therapeutic nucleic acids. Overcoming delivery challenges with safe and efficient carriers is crucial for clinical success.
Area of Science:
- Biotechnology
- Molecular Biology
- Genetics
Background:
- Gene therapy aims to correct genetic defects by introducing functional genes or inhibiting harmful ones.
- Current applications include treating cancer, viral infections, and dermatological diseases.
- Significant hurdles exist, including cellular barriers and rapid clearance of therapeutic agents.
Purpose of the Study:
- To review strategies for overcoming barriers in gene delivery.
- To discuss the development of effective gene-based therapeutics.
- To highlight the importance of efficient and safe carriers for nucleic acid transfer.
Main Methods:
- Review of existing literature on gene therapy vectors and delivery systems.
- Analysis of viral and non-viral vector efficiencies and limitations.
- Discussion of challenges in nucleic acid transfer and cellular uptake.
Main Results:
- Viral vectors show higher efficiency but pose risks like immunogenicity.
- Non-viral vectors are safer but less efficient.
- Development of ideal carriers requires balancing safety with effective delivery.
Conclusions:
- Overcoming barriers in gene delivery is essential for advancing gene therapy.
- Safe and efficient carriers are critical for successful clinical translation.
- Continued research into novel delivery strategies is necessary for therapeutic breakthroughs.
Related Concept Videos
01:29Microorganisms in Medicine and Therapeutics
Microorganisms play a fundamental role in vaccine development, gene therapy, and therapeutic production. Their biological properties are harnessed to advance medicine and public health. Beyond immunization, microorganisms contribute to gut health, antibiotic synthesis, and genetic disease treatment.Live Attenuated and Inactivated VaccinesLive attenuated vaccines, such as the measles, mumps, and rubella (MMR) vaccine, utilize weakened forms of pathogens to closely resemble natural infections.
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...
01:16Drug Delivery: Overview
The selection of a drug's delivery route depends upon its physicochemical properties, including lipid or water solubility and ionization, as well as the therapeutic requirement, such as immediate or sustained effect. These routes can be divided into three primary categories: enteral, parenteral, and topical.
Enteral delivery involves administering drugs directly through swallowing, sublingual placement, or buccal application. Orally administered drugs predominantly navigate the gastrointestinal...
Enteral delivery involves administering drugs directly through swallowing, sublingual placement, or buccal application. Orally administered drugs predominantly navigate the gastrointestinal...
01:22Antiviral Nucleoside Inhibitors
Antiviral Nucleoside InhibitorsAntiviral nucleoside inhibitors are structural analogs of natural nucleosides that interfere with viral DNA or RNA synthesis. These compounds selectively target viral polymerases due to their resemblance to host nucleosides, thereby disrupting viral genome replication.Mechanism of Acyclovir ActionAcyclovir is a guanosine analog with a three-carbon acyclic side chain. It selectively targets herpes simplex virus type 1 (HSV-1), herpes simplex virus type 2 (HSV-2),...
01:27Drug Delivery Systems: Different Types
Conventional oral drug products, termed immediate-release (IR) formulations, are engineered to promptly release their active pharmaceutical ingredient (API) upon ingestion, typically in tablets or capsules. This rapid release often results in swift drug absorption and consequent pharmacodynamic effects, although the timing and intensity can vary depending on the drug's properties. Prodrugs within these formulations require metabolic conversion to activate their pharmacodynamic effects,...
01:19Modified-Release Drug Delivery Systems: Overview
Modified-release dosage forms are designed to address the limitations of drugs with short biological half-lives. These forms maintain stable therapeutic drug concentrations over extended periods, reducing the need for frequent dosing. A consistent drug level helps minimize peak-trough fluctuations, which can reduce adverse effects, lower the risk of drug resistance, and improve overall treatment effectiveness.One common type of modified-release form is the extended-release (ER) formulation. ER...