Related Experiment Video
Updated: May 28, 2026
09:29
Early Viral Entry Assays for the Identification and Evaluation of Antiviral Compounds
Published on: October 29, 2015
Artificial viruses: exploiting viral trafficking for therapeutics.
1Department of Chemical and Biomolecular Engineering, University of California, Berkeley 94720, USA. dominic.glover@berkeley.edu
Infectious Disorders Drug Targets
|November 1, 2011
Summary
Researchers are developing artificial viruses to improve drug and gene delivery. These advanced vectors mimic viral functions for efficient transport and replication of therapeutic DNA within cells, overcoming key barriers in gene therapy.
Area of Science:
- Cellular biology
- Virology
- Gene therapy
Background:
- Understanding intracellular transport of mammalian proteins and viral hijacking mechanisms is crucial.
- Existing non-viral gene delivery methods face significant intracellular barriers.
Purpose of the Study:
- To explore the development of advanced artificial viruses for enhanced drug and gene delivery.
- To leverage viral mechanisms for efficient intracellular transport and DNA replication.
Main Methods:
- Designing multi-component delivery vectors with virus-like functionality.
- Assembling vectors with therapeutic DNA into nanoparticles for cellular uptake and transport.
- Mimicking viral strategies for nuclear DNA maintenance and replication (integration or episomal plasmids).
Main Results:
- Development of structured nanoparticles for targeted intracellular delivery.
- Demonstration of virus-like functionality in artificial vectors.
- Potential for site-specific DNA integration or episomal replication.
Conclusions:
- Sophisticated artificial viruses show great promise for overcoming intracellular barriers.
- This approach could lead to efficient and sustained non-viral gene therapy.
- Mimicking viral pathways offers a powerful strategy for therapeutic DNA delivery and management.
Related Concept Videos
01:30Inhibitors of Viral Protein Synthesis
Protein synthesis is indispensable for viral replication, as viruses lack the cellular machinery required for this process and must hijack the host's translational apparatus. In response, host cells deploy a critical innate immune defense involving interferons, specialized cytokines that play a central role in inhibiting viral propagation.Upon viral detection, infected cells release interferons that bind to receptors on adjacent uninfected cells, activating the JAK-STAT signaling pathway and...
01:29Viruses with RNA Genomes
RNA viruses are categorized into positive-strand, negative-strand, or double-stranded groups based on their genomic structure and replication mechanisms. This classification dictates how they exploit host cellular machinery for protein synthesis and replication. Some RNA viruses also utilize reverse transcription as part of their life cycle, further diversifying their replication strategies.Positive-Strand RNA VirusesPositive-strand RNA viruses have genomes that function directly as messenger...
01:29Subviral Agents
Subviral agents are infectious entities that resemble viruses but lack one or more viral components, such as a capsid or essential replication machinery. These agents include viroids, prions, and satellites, each possessing distinct structural and functional characteristics that influence their mode of infection and replication.Viroids are the simplest subviral agents, consisting of circular, single-stranded RNA molecules without a protein coat. They exclusively infect plants, relying entirely...
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),...
01:29Microorganisms 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.
02:33Retroviruses
Retroviruses and retrotransposons both insert copies of their genetic elements into the genome of the host cell. Thus, the viral genes are passed on when the host genome is replicated or translated. A typical retroviral DNA sequence contains 3-4 genes that encode the different proteins required for its structural assembly and function as a molecular parasite. This DNA is transcribed into a single mRNA, which is very similar in structure to conventional mRNAs, i.e., it is capped at the 5’...