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Gene Gun DNA Immunization Introduction for Hybridoma Generation

Gene gun is one of the most advanced and effective physical gene transfection techniques, which was first proposed and used by Sanford and his colleagues in 1987. With the development of this technology, the application of gene gun has gradually expanded from plant cells to mammalian cells.

Principle of Gene Gun

Gene gun technology accelerates the impact of micron-scale target pellets (usually biologically inert heavy metal particles, such as tungsten, gold, and silver) with attached genetic material on the target cells, so that the genetic material is shed and expressed in the cells.

Procedure of Gene Gun Transformation

There are 6 main steps in the operation process of the gene gun, which are:

  1. Preconditioning of target cells or tissues, mainly to regulate osmotic pressure;
  2. Preparation of particle bullet, which encapsulates exogenous DNA solution onto metal particles;
  3. Equip the gene gun;
  4. Bombard;
  5. Transitional culture, in which the cells are cultured in a medium without selective pressure for one or two weeks to facilitate the recovery of target cells and the full expression of exogenous genes;
  6. Screening culture or direct differentiation.

Gene Gun DNA Immunization

Gene gun is an important DNA immunization technology. In addition to that, DNA immunization also includes electroporation DNA immunization and naked DNA immunization. Gene gun is mainly used to deliver DNA into the skin or skin tumors. It is able to induce high antibody levels and CD8+T cell responses and is therefore a powerful avenue for the production of monoclonal antibodies.

Advantages of Gene Gun Technology

Gene gun technology has many advantages over conventional methods, including:

  1. Simple, fast, and flexible;
  2. Universal for all cell types;
  3. The sample size is small, and only a small amount of DNA and cells can meet the experimental requirements;
  4. Multiple plasmids can be co-introduced;
  5. The ability to deliver large fragments of DNA;
  6. High success rate and good stability.

Disadvantages of Gene Gun Technology

Gene gun technology is not without its shortcomings, and there are still some problems in its application process and disease treatment that need further verification and improvement.

  1. The long-term safety of residual metal particles on the body after the bombardment of target cells or target tissues by gene gun needs to be further confirmed;
  2. Although gene gun technology is very convenient for cell culture in vitro and direct surface application, it is still difficult to use it in the gene therapy of internal organs or tissues. It is necessary to design an endoscopic gene gun device for easy observation in the body;
  3. At present, the reports are mainly about the transfer of single gene mediated by gene gun, but there are few reports on the research of the combined transfer of multiple genes and their synergistic effect;
  4. The exact mechanism of gene gun-mediated therapeutic gene transfer needs to be further explored.

Creative Biolabs is pleased to share our expertise and experience in DNA immunization to facilitate our clients' research.

Reference

  1. Mahvi, D. M., et al., DNA cancer vaccines: A gene gun approach. Immunol Cell Biol, 1997. 75(5): p. 456-460.

All listed services and products are For Research Use Only. Do Not use in any diagnostic or therapeutic applications.

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