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271 人类蛋白质
P1 Intro of protein therapy:
1. increase demand
2. Some products available, but this therapy is still in the early development
3. Common two production Methods and their PROS/ CONS
i. human cell culture: high cost, low yields
ii. bacteria or yeast: can mass produce, but hard to purify and lack of appropriate PTM
P2 intro a third production method: in the milk of transgenic animals.
1. Explain the method
2. PROS
i. high output
ii. fewer animals required
iii. can specify sex of the offspring, safe time
3. CONS
i. takes too long to make the right transgenic animal
ii. proteins cannot harvested until lactation begins
iii. transgene makes the animal malfunction.
4. Author’s attitude: protein therapy demands grow, despite CONS, transgenic animals could be potential alternative. |
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