【在 s****9 的大作中提到】 : Gs is limited. You overexpressed another well-known Gs-coupled protein to : see whether it can interfere your gene expression.
s*y
9 楼
哇靠,这个问题超过了我的专业范围,我只能大概就我知道的其他文章的例子 来建议一下吧。 要检测是否通过G protein, 无非就是这么几个思路: 1. G-protein specific inhibition: non-hydrolyzable GTP analog, GEF analog, Knockdown of G-protein. 2. G protein dominant negative mutant 3. G protein dominant positive mutant 4. Or if you know something is in the middle of a pathway, you can also cut off that middle player with methods similar as above.
two isoforms for Gas; short one, GasQ213L; long one, GasQ227L. these are constitutive active mutants. Dominant negative mutants, GasQ213L/D281N and GasQ227L/D295N. you can buy from www.cDNA.org
but, I personally think the knockdown is the best way.
l*1
21 楼
it might take 3 Ys or even more conditional GPCRs (--) (+-) (++) Mouse/Rat/zebrafish LZ her/his CEO/CFO can not allow him to do that so that kind of task always likes below: 同主题阅读:现在的核心问题是没有什么上手快,费少,钱又多,又稳定,又体面,又 不是青春饭的protocol/method/patent [版面:生物学][首篇作者:KeeVan] , 2012年09月25日 http://www.mitbbs.com/article_t/Biology/31733655.html
【在 p*****e 的大作中提到】 : but, I personally think the knockdown is the best way.
s*y
22 楼
他建议的是knockdown 不是knockout :)
【在 l**********1 的大作中提到】 : it might take 3 Ys or even more conditional GPCRs (--) (+-) (++) : Mouse/Rat/zebrafish : LZ her/his CEO/CFO can not allow him to do that : so that kind of task always likes below: : 同主题阅读:现在的核心问题是没有什么上手快,费少,钱又多,又稳定,又体面,又 : 不是青春饭的protocol/method/patent : [版面:生物学][首篇作者:KeeVan] , 2012年09月25日 : http://www.mitbbs.com/article_t/Biology/31733655.html
s*y
23 楼
狂赞,还是内行人的意见比较靠谱。
and
【在 p*****e 的大作中提到】 : two isoforms for Gas; short one, GasQ213L; long one, GasQ227L. these are : constitutive active mutants. Dominant negative mutants, GasQ213L/D281N and : GasQ227L/D295N. you can buy from www.cDNA.org
a*x
24 楼
多谢多谢。给你发包子
and
【在 p*****e 的大作中提到】 : two isoforms for Gas; short one, GasQ213L; long one, GasQ227L. these are : constitutive active mutants. Dominant negative mutants, GasQ213L/D281N and : GasQ227L/D295N. you can buy from www.cDNA.org
l*1
25 楼
看错啦 matrix 作为将功补过 LZ pls refer Castellone MD et al. (2005) title: Prostaglandin E2 Promotes Colon Cancer Cell Growth Through a Gs-Axin-b-Catenin Signaling Axis Science. 310: 1504-10. its Fig. 2B PubMed link: http://www.ncbi.nlm.nih.gov/pubmed/16293724
Sure plus Ku GM et al. (2012) An siRNA screen in pancreatic beta cells reveals a role for Gpr27 in insulin production. PLoS Genet. 8: e1002449. Abstract ignored We show that knockdown of Gpr27 reduces endogenous mouse insulin promoter activity and glucose stimulated insulin secretion. Furthermore, we show that Pdx1 is important for Gpr27's effect on the insulin promoter and insulin secretion. Finally, the over-expression of Gpr27 in 293T cells increases inositol phosphate levels, while knockdown of Gpr27 in MIN6 cells reduces inositol phosphate levels, suggesting this orphan GPCR might couple to Gq/11 . In summary, we demonstrate a MIN6-based siRNA screening system that allows rapid identification of novel positive and negative regulators of the insulin promoter. Using this system, we identify Gpr27 as a positive regulator of insulin production. web link: http://www.ncbi.nlm.nih.gov/pubmed/22253604