Cell Free Application: Characterization of Long Non-coding RNA Inhibition of Transcription

Long noncoding RNAs have been shown to regulate chromatin states, transcriptional activity and post transcriptional activity (1). Only a few studies have observed long non-coding RNAs modulating the translational process (2). The noncoding RNA BC200 has been shown to inhibit translation by interacting with the translation initiation factors, eIF4A and eIF4B.

To characterize how BC200 translational inhibition could be controlled,  a variety of RNAs were transcribed/translated in vitro using the TNT system (Cat. #L4610) from Promega. To each transcription/translation reaction, BC900 RNA, hnRNPE1 and hnRNE2 proteins were added. Inhibition of BC200 activity was noted when proteins were successful expressed (3).

Literature Cited

  1.  Sosinska, P et.al. (2015) Intraperitoneal invasiveness of ovarian cancer from the cellular and molecular perspective. Ginekol. Pol. 86, 782–86.
  2. Geisler, S. and Coller, J. (2013) RNA in unexpected places: long non-coding RNA functions in diverse cellular contexts. Nat.Rev. Mol. Cell. Bio. 14,699–12.
  3. Jang, S. et. al. (2017) Regulation of BC200 RNA-mediated translation inhibition by hnRNP E1 and E2. FEBS Letters. 591, 393–5.

Cell-free Expression: A System for Every Need


Cell-free protein expression is a simplified and accelerated avenue for the transcription and/or translation of a specific protein in a quasi cell environment. An alternative to slower, more cumbersome cell-based methods, cell-free protein expression methods are simple and fast and can overcome toxicity and solubility issues sometimes experienced in traditional E. coli expression systems. Continue reading “Cell-free Expression: A System for Every Need”