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p1rotein therapeutics have increased dramatically in use. Human proteins are in great demandfor the treatment of diseases
~purified from blood :expensive+riak of contamination
~produced in human cell : expensive+output samll
~produced in bacteria or yeast: protein difficult to purify +lack the appropriate post-translation modification
P2: Human proteins that have appropriate post-translational modifications can be produced in the milk of transgenic animal .
scientists investigate whether they can be used to produce therapeutic proteins
-output high + cost low
-advantages :it uses less than half the experimental animals than does pronuclear injection.
It is possible to specify the sex of offspring and reduce the time taken to generate a flock.
-Disadvantages:
it takes a long time to generate and validate transgenic animals and the transgene may affect the animal.
-notwithstanding: demand will exceed the ability to supply therapeutic proteins
总结: transgenic animals provide source of therapeutic proteins
作者观点:挺支持transgenic animals |
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