Gene-edited pigs have been created by scientists at Edinburgh's Roslin Institute, offering a breakthrough in resistance to classical swine fever (CSF). This highly contagious and often fatal disease has caused significant losses for pig farmers worldwide.
Helen Crooke, mammalian virology deputy leader at the Animal and Plant Health Agency (APHA), where the trial was performed, stressed that CSF is "devastating" for livestock and farmers. The disease causes fever, skin lesions, convulsions, diarrhea, and often death within 15 days.
To combat this threat, researchers targeted a gene responsible for producing DNAJC14 protein, which plays a critical role in the replication of pestiviruses, including CSF. By making precise edits to their DNA, they created a line of pigs with enhanced resistance. The edited animals remained healthy and showed no signs of infection when exposed to CSF.
In contrast, control animals exhibited symptoms of the disease and high levels of the virus in their blood just one week after inoculation. Subsequent generations of gene-edited pigs were monitored without any adverse effects on health or fertility.
The breakthrough comes as countries are relaxing rules around gene editing in agriculture. The UK's Precision Breeding Act has paved the way for gene-edited crops, while other nations have already approved gene-edited livestock. This technology has far-reaching potential to create healthier animals and reduce losses for farmers.
However, Dr. Simon Lillico, a research scientist at Roslin Institute, emphasized that there is "a moral imperative" to use this technology to make animals more resilient to diseases. The study's findings are published in the journal Trends in Biotechnology, marking a significant step forward in using genomics-enabled innovation to build resilience to disease in livestock populations.
The scientists hope that their discovery will have practical applications in reducing losses for pig farmers worldwide and creating healthier animals. As the field of gene editing continues to advance, researchers are eager to explore its potential benefits and challenges in agriculture and animal health.
Helen Crooke, mammalian virology deputy leader at the Animal and Plant Health Agency (APHA), where the trial was performed, stressed that CSF is "devastating" for livestock and farmers. The disease causes fever, skin lesions, convulsions, diarrhea, and often death within 15 days.
To combat this threat, researchers targeted a gene responsible for producing DNAJC14 protein, which plays a critical role in the replication of pestiviruses, including CSF. By making precise edits to their DNA, they created a line of pigs with enhanced resistance. The edited animals remained healthy and showed no signs of infection when exposed to CSF.
In contrast, control animals exhibited symptoms of the disease and high levels of the virus in their blood just one week after inoculation. Subsequent generations of gene-edited pigs were monitored without any adverse effects on health or fertility.
The breakthrough comes as countries are relaxing rules around gene editing in agriculture. The UK's Precision Breeding Act has paved the way for gene-edited crops, while other nations have already approved gene-edited livestock. This technology has far-reaching potential to create healthier animals and reduce losses for farmers.
However, Dr. Simon Lillico, a research scientist at Roslin Institute, emphasized that there is "a moral imperative" to use this technology to make animals more resilient to diseases. The study's findings are published in the journal Trends in Biotechnology, marking a significant step forward in using genomics-enabled innovation to build resilience to disease in livestock populations.
The scientists hope that their discovery will have practical applications in reducing losses for pig farmers worldwide and creating healthier animals. As the field of gene editing continues to advance, researchers are eager to explore its potential benefits and challenges in agriculture and animal health.