回复 shihuijunm 的帖子 ( I% E2 t7 r6 D " {: `) {3 g; s" P- PThe 293FT Cell Line, a derivative of the 293F Cell Line, stably and constitutively expresses the SV40 large T antigen from pCMVSPORT6TAg.neo and must be maintained in medium containing 2 L, W* s$ C3 o) Y7 R% b6 B8 M& {. mGeneticin. So it's different from the 293 T cell line. + [$ D* R- S$ v0 hBest regards!作者: 芦苇浅 时间: 2014-1-11 20:16
回复 greenjing 的帖子 ! J4 a9 D3 c6 X# d" v* L( D 4 M9 W) J2 n* y; @There are so many factors influncing your transduction efficiency:1. MOI too low; 2. Too much antibiotic used for selection; 3. Cells harvested too soon after transduction; 4. Gene of interest is toxic to cells; 5. Non-dividing cell type used etc.作者: yiyi8909 时间: 2014-5-14 19:57
/ S% V5 s6 F- P5 Y9 h5 H& I好像看有的说F的意思就是fast,生长速度比293T快,它们两个都是整合了SV40大T抗原。具体的也不是很清楚。 * \& r' C- f' {4 t* fThe 293FT Cell Line is derived from the 293F Cell Line and stably6 M" z4 S0 {7 |+ Z7 |6 `
expresses the SV40 large T antigen from the pCMVSPORT6TAg.neo plasmid.; _4 Q! K, s# }' ?
Expression of the SV40 large T antigen is controlled by the human cytomegalovirus9 o& Q! s( L- L. Y
(CMV) promoter and is high-level and constitutive. Studies have demonstrated maximal virus production in human 293 cells expressing SV40 large T antigen (Naldini et al., 1996), making the 293FT Cell Line a particularly suitable host for generating lentiviral constructs using the ViraPower Lentiviral Expression System available from Invitrogen./ U! M2 \; C5 h. D) M) e
The 293 Cell Line is a permanent line established from primary embryonal human 4 m R. S8 ]" [# lkidney transformed with sheared human adenovirus type 5 DNA (Graham et al.,/ T1 e& A( t" A
1977; Harrison et al., 1977). The E1A adenovirus gene is expressed in these cells% Z) d* Q# [% h, M4 o! ~4 W; f( `
and participates in transactivation of some viral promoters, allowing these cells to$ N# Y8 M4 Z- B2 _# Z; X: s3 Y
produce very high levels of protein. 8 J2 R5 Q& |# m& Q3 NThe 293-F Cell Line available from Invitrogen (Catalog no. 11625) is a fastgrowing8 S9 w- p- y0 h( E+ n- Y2 ]; e
variant of the 293 cell line, and was originally obtained from Robert Horlick at Pharmacopeia. * x' u& f$ h) g& O, ?- u M4 c这个以供参考!作者: thinktank 时间: 2014-6-16 12:46
不错。 . c" t3 B# J' _0 v7 H h作者: 小兔子lp 时间: 2014-8-14 13:57