4 ^5 ~! k' k) Z* D) [: xThe 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 8 ?+ C" P. g! T9 T! U' @/ a
Geneticin. So it's different from the 293 T cell line. A* H4 i3 z, Z+ _) w) a9 u" ^/ t
Best regards!作者: 芦苇浅 时间: 2014-1-11 20:16
回复 greenjing 的帖子 3 K# I! [" n( q4 i2 g. s6 H 6 G' b' K2 p, G% Q# T7 ^) }, w& KThere 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
回复 zerollx 的帖子 ( w; \( E3 b3 F " @0 v' m+ E- `7 ]好像看有的说F的意思就是fast,生长速度比293T快,它们两个都是整合了SV40大T抗原。具体的也不是很清楚。 / [4 i. V8 v$ C* ?6 ^5 J9 P9 P" jThe 293FT Cell Line is derived from the 293F Cell Line and stably `" |# a9 @' Hexpresses the SV40 large T antigen from the pCMVSPORT6TAg.neo plasmid. 0 l4 L2 U0 [# h- \* `4 ~4 [Expression of the SV40 large T antigen is controlled by the human cytomegalovirus Q6 }' X! \) K d(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/ @, t2 H" N2 G1 d6 zThe 293 Cell Line is a permanent line established from primary embryonal human . y1 \9 L$ ^6 x3 S( I% Okidney transformed with sheared human adenovirus type 5 DNA (Graham et al.," ~" g2 I7 {3 |; M+ p% a
1977; Harrison et al., 1977). The E1A adenovirus gene is expressed in these cells& C4 k: w0 K( M/ [* \, e- P
and participates in transactivation of some viral promoters, allowing these cells to/ T, f, X5 ?6 h; I
produce very high levels of protein. 5 s- }# ^# J) TThe 293-F Cell Line available from Invitrogen (Catalog no. 11625) is a fastgrowing + R; E! p5 b, yvariant of the 293 cell line, and was originally obtained from Robert Horlick at Pharmacopeia. . r W! z' O. R" S- v* Q, n3 i这个以供参考!作者: thinktank 时间: 2014-6-16 12:46