不想说废话了,请允许我直接上实验步骤。
昨天我们先是(1)组合好了Oligo;然后(2)把Oligo通过酶切和连接实验插入到pSpCas9质粒中;接着(3)把这个质粒转化(transformation)到感受态细菌中;再来(4)把这细菌复活后涂0.1%氨苄西林抗生素LB平皿上,过夜培养12-16 h。
Day 2: inspect the plates for colony growth. Typically, there are no colonies on the negative control plates (ligation of BbsI-digested pSpCas9(BB) alone without annealed sgRNA oligo insert), and there are tens to hundreds of colonies on the pSpCas9(sgRNA) (sgRNA inserted into pSpCas9(BB)) cloning plates.
第二天:检查克隆生长情况。一般来说,阴性对照不会出现克隆,而阳性结果会有几十到几百个克隆。
From each plate, pick two or three colonies to check for the correct insertion of sgRNA. Use a sterile pipette tip to inoculate a single colony into a 3-ml culture of LB medium with 100 µg ml − 1 ampicillin. Incubate the culture and shake it at 37 °C overnight. 每块平板挑2-3个克隆去检查sgRNA的插入情况。
我的实验结果不错,对照组完全无克隆,实验组有约150个左右克隆,每个平皿挑了3个去扩增。
Day 4的我已经提了质粒,测了浓度,准备验证(因为明天要开组会+文献汇报,所以验证部分暂停)。
感谢师兄DZ
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