Flow cytometry-based functional selection of RNA interference triggers for efficient epi-allelic analysis of therapeutic targets.
Flow cytometry-based functional selection of RNA interference triggers for efficient epi-allelic analysis of therapeutic targets.
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DOI:
10.1186/1472-6750-14-57
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发表时间:
2014-06-21
影响因子:
3.5
通讯作者:
Lorens JB
中科院分区:
文献类型:
--
作者:
Micklem DR;Blø M;Bergström P;Hodneland E;Tiron C;Høiby T;Gjerdrum C;Hammarsten O;Lorens JB
The dose-response relationship is a fundamental pharmacological parameter necessary to determine therapeutic thresholds. Epi-allelic hypomorphic analysis using RNA interference (RNAi) can similarly correlate target gene dosage with cellular phenotypes. This however requires a set of RNAi triggers empirically determined to attenuate target gene expression to different levels. In order to improve our ability to incorporate epi-allelic analysis into target validation studies, we developed a novel flow cytometry-based functional screening approach (CellSelectRNAi) to achieve unbiased selection of shRNAs from high-coverage libraries that knockdown target gene expression to predetermined levels. Employing a Gaussian probability model we calculated that knockdown efficiency is inferred from shRNA sequence frequency profiles derived from sorted hypomorphic cell populations. We used this approach to generate a hypomorphic epi-allelic cell series of shRNAs to reveal a functional threshold for the tumor suppressor p53 in normal and transformed cells. The unbiased CellSelectRNAi flow cytometry-based functional screening approach readily provides an epi-allelic series of shRNAs for graded reduction of target gene expression and improved phenotypic validation.
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DOI:
10.1073/pnas.0909333107
发表时间:
2010-01-19
影响因子:
11.1
作者:
Gjerdrum, Christine;Tiron, Crina;Lorens, James B.
通讯作者:
Lorens, James B.
影响因子:
3.6
作者:
Wille, Lucia;Kemp, Melissa L.;Lauffenburger, Douglas A.
通讯作者:
Lauffenburger, Douglas A.
影响因子:
3.7
作者:
Hoffmann, Martin;Chang, Hannah H.;Galle, Joerg
通讯作者:
Galle, Joerg
影响因子:
30.8
作者:
Hemann, MT;Fridman, JS;Lowe, SW
通讯作者:
Lowe, SW
影响因子:
2.7
作者:
Brody, JR;Kern, SE
通讯作者:
Kern, SE