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Genetically engineering pigs to break down a key viral protein can enhance livestock resistance to foot and mouth disease virus. This genetic modification offers a promising strategy for improving animal health and agricultural biosecurity.

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Area of Science:

  • Veterinary Virology
  • Genetic Engineering
  • Animal Biotechnology

Background:

  • Foot and mouth disease virus (FMDV) poses a significant threat to global livestock agriculture, causing severe economic losses.
  • Current FMDV control strategies often rely on vaccination and culling, which have limitations.
  • Developing intrinsic resistance in livestock is a desirable alternative or complementary approach.

Purpose of the Study:

  • To investigate the feasibility of genetically engineering pigs to resist FMDV infection.
  • To assess the efficacy of targeting a crucial viral protein for degradation within the host.

Main Methods:

  • Utilizing CRISPR-Cas9 gene-editing technology to introduce genetic modifications in pigs.
  • Engineering pigs to express enzymes capable of degrading a specific, essential FMDV protein.
  • Evaluating the susceptibility of engineered pigs to FMDV challenge models.

Main Results:

  • The genetically engineered pigs demonstrated significantly reduced susceptibility to FMDV infection.
  • Degradation of the target viral protein was confirmed in challenged, engineered animals.
  • No adverse health effects were observed in the pigs due to the genetic modification.

Conclusions:

  • Genetic engineering offers a viable strategy to confer intrinsic resistance to FMDV in pigs.
  • Targeting essential viral proteins for degradation is an effective method for developing disease-resistant livestock.
  • This approach holds potential for improving FMDV control and safeguarding agricultural economies.