Elucidating the RNA-Protein Interactomes of Target RNAs in Tissue

Anal Chem. 2023 May 9;95(18):7087-7092. doi: 10.1021/acs.analchem.2c05635. Epub 2023 Apr 24.

Abstract

RNA-protein interactions are key to many aspects of cellular homeostasis and their identification is important to understanding cellular function. Multiple strategies have been developed for the RNA-centric characterization of RNA-protein complexes. However, these studies have all been done in immortalized cell lines that do not capture the complexity of heterogeneous tissue samples. Here, we develop hybridization purification of RNA-protein complexes followed by mass spectrometry (HyPR-MS) for use in tissue samples. We isolated both polyadenylated RNA and the specific long noncoding RNA MALAT1 and characterized their protein interactomes. These results demonstrate the feasibility of HyPR-MS in tissue for the multiplexed characterization of specific RNA-protein complexes.

Publication types

  • Research Support, N.I.H., Extramural

MeSH terms

  • Cell Line
  • RNA, Long Noncoding* / genetics
  • RNA, Messenger

Substances

  • RNA, Long Noncoding
  • RNA, Messenger