An Endogenously Tagged Fluorescent Fusion Protein Library in Mouse Embryonic Stem Cells

作者：Harikumar Arigela; Edupuganti Raghu Ram; Sorek Matan; Azad Gajendra Kumar; Markoulaki Styliani; Sehnalova Petra; Legartova Sona; Bartova Eva; Farkash Amar Shlomit; Jaenisch Rudolf; Alon Uri; Meshorer Eran^*

来源：Stem Cell Reports, 2017, 9(4): 1304-1314.

DOI：10.1016/j.stemcr.2017.08.022

Embryonic stem cells (ESCs), with their dual capacity to self-renew and differentiate, are commonly used to study differentiation, epigenetic regulation, lineage choices, and more. Using non-directed retroviral integration of a YFP/Cherry exon into mouse ESCs, we generated a library of over 200 endogenously tagged fluorescent fusion proteins and present several proof-of-concept applications of this library. We show the utility of this library to track proteins in living cells; screen for pluripotency-related factors; identify heterogeneously expressing proteins; measure the dynamics of endogenously labeled proteins; track proteins recruited to sites of DNA damage; pull down tagged fluorescent fusion proteins using anti-Cherry antibodies; and test for interaction partners. Thus, this library can be used in a variety of different directions, either exploiting the fluorescent tag for imaging-based techniques or utilizing the fluorescent fusion protein for biochemical pull-down assays, including immunoprecipitation, co-immunoprecipitation, chromatin immunoprecipitation, and more.

• 出版日期2017-10-10