Abstract
Mammalian genomes encode large amounts of noncoding RNAs (ncRNAs), which tend to form intricate structures and interact with their target RNA molecules through complementary base pairing with the help of proteins. Map** of intra- and inter-molecular RNA–RNA interactions (RRIs) is required to unravel the structure and targets of ncRNAs which are two essential aspects for understanding the molecular mechanisms of ncRNAs in various biological processes. At this frontiers, we recently invented RNA in situ conformation sequencing (RIC-seq) technology to profile protein-mediated RNA–RNA spatial interactions at single-nucleotide resolution in an unbiased manner. We have demonstrated that RIC-seq-identified RRIs are helpful for simultaneously deducing ncRNA structures and targets. Here, we summarize methods for probing RRIs and describe a step-by-step protocol for generating a successful RIC-seq library.
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Abbreviations
- ncRNA:
-
Noncoding RNA
- rRNA:
-
Ribosomal RNA
- tRNA:
-
Transfer RNA
- piRNA:
-
Piwi-interacting RNA
- lncRNA:
-
Long noncoding RNA
- circRNA:
-
Circular RNA
- eRNA:
-
Enhancer RNA
- AMT:
-
4′-Aminomethyltrioxsalen
- RBP:
-
RNA-binding protein
- EMSA:
-
Electrophoretic mobility shift assay
- SPR:
-
Surface plasmon resonance
- FRET:
-
Fluorescence resonance energy transfer
- CLASH:
-
Crosslinking, ligation, and sequencing of hybrids
- RAP:
-
RNA antisense purification
- hiCLIP:
-
RNA hybrid and individual-nucleotide resolution ultraviolet crosslinking and immunoprecipitation
- RPL:
-
RNA proximity ligation
- MARIO:
-
Map** RNA interactome in vivo
- PARIS:
-
Psoralen analysis of RNA interactions and structures
- SPLASH:
-
Sequencing of psoralen crosslinked, ligated, and selected hybrids
- LIGR-seq:
-
Ligation of interacting RNA followed by high-throughput sequencing
- COMRADES:
-
Crosslinking of matched RNAs and deep sequencing
- RIC-seq:
-
RNA in situ conformation sequencing
- RRI:
-
RNA–RNA interaction
- MNase:
-
Micrococcal nuclease
- pCp-biotin:
-
Biotinylated cytidine (bis) phosphate
- vRIC-seq:
-
Virion RIC-seq
- SHARC:
-
Spatial 2′-hydroxyl acylation reversible crosslinking
- ConA:
-
Concanavalin A
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Acknowledgements
We thank Drs. Changchang Cao and Di Wang for critical reading of this manuscript. This work was supported by the National Key R&D Program (2022YFA1303300), NSFC (32025008, 32130064, 91940306, and 81921003), and the K.C. Wong Education Foundation (GJTD-2020-06) to Y.X.
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Ye, R., Cai, Z., Xue, Y. (2023). Map** In Situ RNA–RNA Interactions with RIC-seq. In: Barciszewski, J. (eds) RNA Structure and Function. RNA Technologies, vol 14. Springer, Cham. https://doi.org/10.1007/978-3-031-36390-0_3
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DOI: https://doi.org/10.1007/978-3-031-36390-0_3
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