Biotechnology Applications

DNA extractionThe discovery that genes are made up of DNA and can be isolated, copied and manipulated has led to a new era of modern biotechnology. New Zealand has many applications for modern biotechnologies.

Humans have been manipulating living things for thousands of years. Examples of early biotechnologies include domesticating plants and animals and then selectively breeding them for specific characteristics.

Modern biotechnologies involve making useful products from whole organisms or parts of organisms, such as molecules, cells, tissues and organs. Recent developments in biotechnology include genetically modified plants and animals, cell therapies and nanotechnology. These products are not in everyday use but may be of benefit to us in the future.

Applications in biotechnology

Key applications of biotechnology include:

Meeting human needs and demands

Biotechnologies have an important role in meeting human needs and demands in medicine, agriculture, forensics, bioremediation, biocontrol and biosecurity.

  • Medicine
    Gene modification or transgenesis are used to produce therapeutic human proteins in cells or whole organisms. The cell or organism used depends upon how large and complex the protein is. For example, human insulin, a small protein used to treat diabetes, is made in genetically engineered bacteria, whereas large, more complex proteins like hormones or antibodies are made in mammalian cells or transgenic animals.

    Antibiotics and vaccines are products of microorganisms that are used to treat disease. Modern biotechnologies involve manipulating vaccines so they are more effective or can be delivered by different routes.

    Gene therapy technologies are being developed to treat diseases like cancer, Parkinson’s disease and cystic fibrosis. In New Zealand, gene therapy is being used as a way to target and kill cancer cells with fewer side effects.

    Xenotransplantation is the transplanting of cells, tissue or organs from one species into another. In New Zealand, cells from a unique, virus-free population of pigs are being used to treat people with type 1 diabetes.

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