digest medium 中文意思是什麼
digest medium
解釋
消化液培養基-
The recombinant pcr technic was used to introduce a linking peptide klgggg to the site between scfv single chain form of the monoclonal antibody sz - 51 specific for the glycoprotein gmp140 on activated platelet membrane and uk32 low molecular weight form of pro - urokinase, to make the scfv - linker - uk32 chimeric gene. this gene was cloned into the transfer vector pbacpak9, and cotransfected with bacpak6 bsu36i digest into sf 9 cells. the fusion protein was secreted into the medium. in the fifth day after the cotransfection, the supernatant of the medium showed 107 iu ml fibrinolytic activity, higher than 25 iu ml fibrinolytic activity of scfv - uk32. elisa showed that the supernatant had the binding activity to activated platelet. wastern blotting also indicated that the supernatant could bind to the monoclonal antibody of urokinase b chain
為了提高重組導向溶栓分子scfv - uk32的溶纖活性，通過重組pcr方法在編碼scfv與uk32的堿基之間引入編碼klgggg連接肽的堿基序列，並克隆到轉移載體pbacpak9上，通過與線性病毒dna bacpak6 bsu36i digest共轉染到昆蟲細胞sf 9內，進行表達。表達產物分泌到上清中，共轉染后第5d天用纖維平板法測得sf 9細胞上清溶纖活性達到107 iu ml ，比未引入連接肽的scfv - uk32的表達活性25 iu ml高。
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