发明名称 |
Vector and expression cell line for mass production of recombinant protein and a process of producing recombinant protein using same |
摘要 |
Disclosed herein is an inducible high-expression cassette comprising a dihydrofolate reductase (DHFR) promoter from which GC-rich repeat sequences are partially or entirely removed, the cassette capable of more effectively improving a gene amplification system. Also disclosed are an expression vector comprising the inducible expression cassette and optionally a gene encoding a recombinant protein of interest, an animal cell line transformed with the expression vector, and a method of mass producing and purifying a recombinant protein by culturing the transformant. The present invention enables the shortening of the time required to establish a cell line producing a recombinant protein of interest at high levels using a low concentration of a DHFR inhibitor, thereby allowing more effective production of the recombinant protein. |
申请公布号 |
US8957196(B2) |
申请公布日期 |
2015.02.17 |
申请号 |
US200712444567 |
申请日期 |
2007.10.16 |
申请人 |
Hanmi Science Co., Ltd. |
发明人 |
Choi In Young;Kim Chang Hwan;Lee Hyun Ji;Park Seong Hee;Kwon Se Chang;Lee Gwan Sun |
分类号 |
C07H21/04;C12N15/63;C12N9/06;C12N15/85 |
主分类号 |
C07H21/04 |
代理机构 |
Sughrue Mion, PLLC |
代理人 |
Sughrue Mion, PLLC |
主权项 |
1. An isolated inducible high-expression cassette comprising the nucleotide sequence of SEQ ID NO. 10, wherein one or more CCGCCC repeat sequences are removed from the GC-rich region of positions 8 to 67 of SEQ ID NO. 10. |
地址 |
Hwaseong-si KR |