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Functional knockout of long non-coding RNAs with genome editing.

Qing Rex Lyu1,2, Shikuan Zhang3, Zhe Zhang4

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Investigating long non-coding RNA (lncRNA) function requires effective loss-of-function studies. CRISPR genome editing offers precise lncRNA knockout, but genomic interactions complicate functional interpretation.

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CRISPR-Cas9functional knockoutgenome editinglong non-coding RNAmethodology

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Area of Science:

  • Molecular Biology
  • Genomics
  • RNA Biology

Background:

  • Understanding long non-coding RNA (lncRNA) biological functions is crucial.
  • Loss-of-function studies are essential for elucidating lncRNA roles.
  • CRISPR-based genome editing is a primary method for lncRNA inactivation.

Purpose of the Study:

  • To review and compare different lncRNA knockout strategies.
  • To highlight the challenges in interpreting lncRNA function due to genomic interplay.
  • To discuss future directions for lncRNA functional studies.

Main Methods:

  • Comparison of RNA silencing, antisense oligos, and CRISPR-based genome editing.
  • Analysis of CRISPR strategies: promoter-exon deletion, poly(A) signal insertion, locus deletion.
  • Discussion of limitations, including genomic interactions with neighboring genes.

Main Results:

  • CRISPR offers precise genomic-level inactivation of lncRNAs.
  • Specific CRISPR strategies like PE1 deletion or locus deletion are effective.
  • Interference with neighboring genes poses a challenge for accurate functional assessment.

Conclusions:

  • Effective lncRNA knockout methods are vital for functional studies.
  • CRISPR technology provides powerful tools for lncRNA inactivation.
  • Addressing genomic interplay is key to advancing lncRNA functional research.