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Related Concept Videos

Gene Therapy00:59

Gene Therapy

Gene therapy is a technique where a gene is inserted into a person’s cells to prevent or treat a serious disease. The added gene may be a healthy version of the gene that is mutated in the patient, or it could be a different gene that inactivates or compensates for the patient’s disease-causing gene. For example, in patients with severe combined immunodeficiency (SCID) due to a mutation in the gene for the enzyme adenosine deaminase, a functioning version of the gene can be inserted. The...
Gene Therapy00:59

Gene Therapy

Gene therapy is a technique where a gene is inserted into a person’s cells to prevent or treat a serious disease. The added gene may be a healthy version of the gene that is mutated in the patient, or it could be a different gene that inactivates or compensates for the patient’s disease-causing gene. For example, in patients with severe combined immunodeficiency (SCID) due to a mutation in the gene for the enzyme adenosine deaminase, a functioning version of the gene can be inserted. The...
Microorganisms in Medicine and Therapeutics01:29

Microorganisms 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.

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Related Experiment Video

Updated: Jul 4, 2026

Quantification of Adeno-Associated Viral Genomes in Purified Vector Samples by Digital Droplet Polymerase Chain Reaction
04:43

Quantification of Adeno-Associated Viral Genomes in Purified Vector Samples by Digital Droplet Polymerase Chain Reaction

Published on: October 11, 2024

Episomal vectors for gene therapy.

Anja Ehrhardt1, Rudolf Haase, Aloys Schepers

  • 1Max von Pettenkofer-Institute, University of Munich, Pettenkoferstr. 9a, Munich, Germany.

Current Gene Therapy
|June 10, 2008
PubMed
Summary

Gene therapy aims to correct genetic disorders using DNA delivery. This review surveys episomal vectors for safe, long-term gene expression, avoiding risks like insertional mutagenesis.

Related Experiment Videos

Last Updated: Jul 4, 2026

Quantification of Adeno-Associated Viral Genomes in Purified Vector Samples by Digital Droplet Polymerase Chain Reaction
04:43

Quantification of Adeno-Associated Viral Genomes in Purified Vector Samples by Digital Droplet Polymerase Chain Reaction

Published on: October 11, 2024

Area of Science:

  • Molecular Biology
  • Genetics
  • Biotechnology

Background:

  • Advancing knowledge of disease genetics fuels interest in gene therapy for phenotypic correction.
  • Gene therapy seeks to treat genetic disorders by delivering functional DNA for sustained expression.
  • Various vector systems exist for gene delivery, each with unique benefits and drawbacks requiring risk/benefit assessment.

Purpose of the Study:

  • To provide a comprehensive survey of available episomal vector systems for mammalian cell genetic modification.
  • To discuss the advantages and disadvantages of these episomal vectors.
  • To explore their applications in research, biotechnology, and gene therapy.

Main Methods:

  • Review of scientific literature on episomal vector systems.
  • Analysis of vector characteristics, including efficiency, expression duration, and safety profiles.
  • Comparison of integrating versus episomal vector systems.

Main Results:

  • Integrating vectors offer high efficiency and long-term expression but risk insertional mutagenesis.
  • Episomal vectors function as extrachromosomal elements, potentially avoiding insertional mutagenesis.
  • A detailed overview of current episomal vector systems is presented, highlighting their pros and cons.

Conclusions:

  • Episomal vectors represent a promising alternative to integrating vectors for gene therapy applications.
  • Careful evaluation of vector systems is crucial for safe and effective gene therapy.
  • Episomal vectors have broad applications in basic research, biotechnology, and the development of novel gene therapies.