载体介绍：

The Murine Stem Cell Virus (MSCV) vectors were derived from the Murine Embryonic Stem Cell Virus (MESV) and the LN retroviral vectors (1,2). Upon transfection into a packaging cell line, pMSCVhyg transiently expresses, or integrates and stably expresses, a transcript containing the extended viral packaging signal !+, the hygromycin resistance gene, and a gene of interest. The vectors achieve stable, high-level gene expression in hematopoietic and embryonic stem cells through a specifically designed 5' long terminal repeat (LTR). This LTR is from the murine stem cell PCMV virus, and it differs from the MoMuLV LTR used in other retroviral vectors by several point mutations and a deletion. These changes enhance transcriptional activation and prevent transcriptional suppression in embryonic stem and embryonal carcinoma cells. As a result, the LTR drives high-level constitutive expression of a target gene in stem cells or other mammalian cell lines (3), when cloned into the multiple cloning site downstream of the 5' LTR. The murine phosphoglycerate kinase (PKG) promoter (PPKG) controls expression of the hygromycin resistance gene (Hygr) for antibiotic selection in eukaryotic cells. pMSCVhyg also contains the pUC origin of replication and E. coli Ampr gene for propagation and antibiotic selection in bacteria.

产品参数：

质粒类型：逆转录病毒载体

高拷贝/低拷贝：低拷贝

启动子：LTR

克隆方法：多克隆位点，限制性内切酶

载体大小：6945 bp 

5' 测序引物及序列：MSCV-F:CCCTTGAACCTCCTCGTTCGACC

3' 测序引物及序列：pMSCV-R:GAGACGTGCTACTTCCATTTGTC

载体抗性：Ampicillin (氨苄青霉素)

筛选标记：Hygromycin（潮霉素）