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Related Concept Videos

RNA-seq03:21

RNA-seq

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RNA sequencing, or RNA-Seq, is a high-throughput sequencing technology used to study the transcriptome of a cell. Transcriptomics helps to interpret the functional elements of a genome and identify the molecular constituents of an organism. Additionally, it also helps in understanding the development of an organism and the occurrence of diseases. 
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Ribosome profiling or ribo-sequencing is a deep sequencing technique that produces a snapshot of active translation in a cell. It selectively sequences the mRNAs protected by ribosomes to get an insight into a cell’s translation landscape at any given point in time.
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Mapping snoRNA Targets Transcriptome-Wide with snoKARR-seq.

Bei Liu1

  • 1Department of Chemistry, The University of Chicago, Chicago, Illinois 60637, United States.

ACS Chemical Biology
|January 15, 2025
PubMed
Summary
This summary is machine-generated.

Small nucleolar RNAs (snoRNAs) guide RNA modifications but have unknown disease roles. A new method, snoRNA-enriched kethoxal-assisted RNA-RNA sequencing (snoKARR-seq), reveals snoRNAs are involved in protein translocation and secretion.

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Targeted RNA Sequencing Assay to Characterize Gene Expression and Genomic Alterations
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Area of Science:

  • Molecular Biology
  • Genomics
  • Biochemistry

Background:

  • Small nucleolar RNAs (snoRNAs) are key noncoding RNAs involved in RNA chemical modifications.
  • The full spectrum of snoRNA functions and their links to human diseases are not well understood.
  • Exploring noncanonical roles of snoRNAs is crucial for understanding their biological significance.

Purpose of the Study:

  • To develop a highly sensitive and specific transcriptome-wide method for identifying snoRNA targets.
  • To investigate the broader cellular functions of snoRNAs beyond RNA modification.
  • To explore the potential involvement of snoRNAs in human diseases.

Main Methods:

  • Development and application of snoRNA-enriched kethoxal-assisted RNA-RNA sequencing (snoKARR-seq).
  • Transcriptome-wide analysis to identify direct snoRNA targets.
  • Validation of novel snoRNA functions using biochemical and cellular assays.

Main Results:

  • snoKARR-seq enables sensitive and specific discovery of snoRNA targets.
  • Identified an unexpected role for snoRNAs in regulating protein translocation.
  • Demonstrated snoRNA involvement in the protein secretion pathway.
  • Expanded the known functional repertoire of snoRNAs.

Conclusions:

  • snoKARR-seq is a powerful tool for advancing snoRNA research.
  • SnoRNAs play significant roles in protein trafficking, impacting cellular function.
  • These findings broaden the understanding of snoRNA biology and their potential implications in disease.