利用CRISPR-Cas9系统敲除小鼠黑色素瘤细胞系MATP基因的初步研究

目的利用CRISPR/Cas9系统,敲除小鼠黑色素瘤细胞系的MATP基因,为MATP基因的功能研究奠定基础。方法利用http://crispr.mit.edu/网站,设计针对MATP的特异性引物,并将引物链接到pCAS9/gRNA1载体。将阳性载体转染小鼠黑色素瘤细胞系B16F10,利用无限稀释的方法获得转染后的单克隆细胞株。提取不同细胞株的基因组,通过测序的方法进一步筛选出发生MATP基因切割的细胞株,并利用Western-blot的方法验证MATP的表达情况。结果成功获得了3株MATP基因敲除的细胞株,Western-blot结果表明,该细胞株不表达MATP蛋白。结论利用pCAS9/gRNA1载体,可以实现B16F10细胞系MATP基因的敲除。

A preliminary study on the MATP gene knockout in a mouse melanoma cell line using CRISPR-Cas9 system

Objective To knockout the MATP gene of mouse melanoma cell line B16F10 using CRISPR/Cas9 system, and to lay foundation for the functional study of MATP gene.Methods Specific primers of MATP were designed according to the report in http://crispr.mit.edu/ website. The primers were linked to pCAS9/gRNA1 vector. Then the positive vector was transfected into mouse melanoma B16F10 cells, and monoclonal cell lines were obtained by the infinite dilution method. After the genomes of different monoclonal cell lines were extracted and sequenced, the cell lines with MATP gene cleavage were screened, and the expression of MATP in these cell lines was verified by Western-blot analysis. Results Three MATP gene knockout cell lines were successfully obtained. The western-blot results showed that the cell lines did not express MATP protein. Conclusions The knockout of MATP gene in B16F10 cell line can be successfully achieved using the pCAS9/gRNA1 vector.